• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    The invention relates to a cooling device (2) comprising a shell (6) made of at least one single or multilayer film (9, 10) which forms an interior (7) in which a working medium and at least one evaporation element (8) for transferring at least a part of the working medium from the liquid to the gaseous state are contained, with at least the surface of the cooling device (2) having a wave shape, for which the single or multilayer film (9, 10) is preformed and designed to be inherently rigid and / or for which purpose in the interior 7) at least one wave-shaped element is arranged, which gives the surface the wave shape.
    公开号:AT522326A4
    申请号:T50528/2019
    申请日:2019-06-13
    公开日:2020-10-15
    发明作者:Gaigg Dipl Ing Stefan；Liebl Dipl Ing Martin
    申请人:Miba Emobility Gmbh；
    IPC主号:
    专利说明:

    are included.
    The invention also relates to an accumulator with several cells for storing electrical energy and at least one cooling device for cooling o-
    the temperature control for the cells.
    The service life and effectiveness as well as the safety of a rechargeable battery for so-called e-mobility depend, among other things, on the temperature during operation. For this reason, the most varied of concepts for cooling or temperature control of the accumulators have been proposed. Basically, the concepts can be divided into two types, namely the air
    cooling as well as water cooling or, in general, cooling with liquids.
    Heat sinks in which at least one coolant channel is formed are used for water cooling. These heat sinks are arranged between the individual modules of the accumulator or on the modules. One module is included
    an independent unit of the accumulator, not necessarily just one cell.
    It is also known from the state of the art that for heat conduction so-called
    so-called heat pipes are used. DE 10 2008 054 958 A1 describes a temperature control system for temperature control
    at least one rechargeable battery of a motor vehicle with at least
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    for heat transport.
    In simple terms, a heat pipe (also referred to as a heat pipe) is a closed system in a housing that has a fluid inside that is close to its boiling point at operating temperature due to the prevailing pressure. If the heat pipe is heated in a partial area, the fluid changes into the gas phase in order to flow inside the heat pipe in the direction of a cooler area, to condense there and to flow back into the warmer area along the inner walls of the housing of the heat pipe. During this (heat) transport process, the heat pipe extracts heat from its surroundings in an evaporation area and transfers this heat to the
    practice of the condensation area of the heat pipe.
    The present invention is based on the object of creating an improved system for cooling a rechargeable battery, that is to say an accumulator.
    fen.
    This object of the invention is achieved with the initially mentioned cooling device
    solves in which the shell has a wave shape.
    Furthermore, the object of the invention is achieved by the aforementioned accumulator, in which the cooling device is designed according to the invention and
    is at least partially arranged between the cells.
    The advantage here is that an improved adaptability of the cooling device to cylindrical cells is possible. The structure of the cooling device can thus also be simplified, since further components for transferring the heat between the cells and the cooling device can be omitted. The improved contact between the cooling device and the cells is also improved
    Cooling or temperature control of the cells achievable. The waveform of the surface
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    Waveform is preformed and inherently rigid. A structural simplification of the cooling device can thus be achieved by reducing the number of components. Alternatively or in addition to this, at least one wave-shaped element can be arranged in the shell, which gives the surface of the cooling device the wave shape, where-
    can also be achieved with a simple design of the waveform.
    According to a further embodiment variant of the invention, at least one mat made of / with inorganic fibers can be arranged between the evaporation element and the shell. The cooling device can thus be produced by simply inserting the at least one mat made of or with the inorganic fibers and the evaporation element. It is with that
    an inexpensive design of the cooling device can also be achieved.
    According to one embodiment variant, it can be provided that the wave-shaped element is formed by the mat made of / with inorganic fibers. By forming the waveform from the components of the cooling device, which are primarily used for cooling, the construction of the cooling device can continue
    be simplified.
    According to another embodiment variant of the invention, it can be provided that the evaporation element has knob-shaped structural elements and / or is designed as a foam element. A simple construction of the cooling device is thus possible. The nub-shaped structural elements can enable vertical heat transport, that is to say in particular the primary removal of the heat from the storage cells of the accumulator. The heat can then be removed from the system in a horizontal direction, in particular with the inclusion of the aforementioned mat made of or with the inorganic fibers in “cold” areas of the cooling device, where the heat takes place through heat exchange and condensation of the working medium that takes place. An inexpensive design of the cooling device is thus also achieved.
    bar.
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    can be.
    According to a variant embodiment of the cooling device it can be provided that several evaporation elements are arranged in the interior of the casing. By avoiding only a single evaporation element that extends almost over the entire surface area of the cooling device, more flexibility can be integrated into the cooling device, so that it can better adapt to uneven surfaces. This in turn allows the ef-
    Effectiveness of the cooling device can be improved.
    To further simplify the production of the cooling device and to reduce the production costs, it can be provided that the evaporation element or the evaporation elements are each made of a polymeric material and are formed in one piece. The evaporation elements can thus be produced without the need for tools, so that post-processing is not necessary. In addition, the material mix of the cooling device can thus be reduced, since it is essentially only made of plastics and the at least one
    Mat can consist of or with the inorganic fibers.
    For a further improvement of the horizontal heat transport, it can be provided according to a further embodiment variant of the cooling device that a mat made of / with inorganic fibers is also arranged between the multiple evaporation elements. The arrangement of several evaporation elements also has the advantage that the vertical heat conduction of the
    Cooling device can be improved.
    For the reason mentioned above, according to a further development, it is possible for the wave-shaped element to be made of / with inorganic
    To form fibers.
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    inside is bigger.
    According to a further embodiment variant of the cooling device, it can be provided that the evaporation element has a holding element in which the knob-shaped structural elements are held. By designing the knob-shaped structural elements as individual elements, different arrangements of such structural elements can be easily implemented, whereby the modularity of the cooling device can be increased. An improved adaptation of the cooling device to the respective cooling task can thus be achieved. In addition, the risk of breakage of the components of the cooling device made of glass can thus also be reduced, since this can reduce the rigidity of the cooling device. This in turn allows a better adaptation of the cooling device to different surface properties, so that the installation of the cooling device on objects to be cooled and thus the effectiveness of the cooling reduces
    can be improved.
    Preferably, according to an embodiment variant, the holding element is plate-
    shaped and made of a polymer material, whereby the machine
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    a weight reduction can be achieved.
    According to a further embodiment of the cooling device, it can be provided that the polymeric material is a hydrophilic plastic, so that the capillary pumping action of the mat made of or with the inorganic fibers is better
    can be supported.
    Here it is based on a further development for the reason mentioned above
    possible to form the wave-shaped element by the holding element.
    In order to further improve the formation of capillary channels in the interior of the cooling device, it can be provided according to a further embodiment variant of the cooling device that at least one plastic element made of a hydrophilic polymeric material is placed between the casing and the evaporation element.
    fabric is arranged.
    In order to improve the mechanical stability of the cooling device, it can be provided according to one embodiment of the cooling device that at least one metal element is arranged between the shell and the evaporation element. Their arrangement in the interior has the advantage that the chemical stress on the metal element compared to its arrangement on a
    Outside of the cooling device is predictable and thus better controllable.
    Here it is possible for the above-mentioned reason according to further developments, the wave-shaped element by the plastic element and / or the
    To form metal element.
    According to another embodiment of the cooling device, it can be provided that the shell is at least partially formed by a composite film made of at least one polymeric material and a metal film. The advantage here is that the heat transfer element can be produced simply from one film or two interconnected films. The flexibility of the cooling device with regard to its geometry can thus be increased. Because of the engagement
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    hen will.
    A simplification of the production of the cooling device can be achieved if, according to an embodiment variant, it is provided that the casing is formed from two interconnected foils. It is thus possible to simply arrange the individual components of the cooling device one above the other and then to connect the two films to one another. This means that the automation
    degree of manufacture of the cooling device can be increased.
    According to an embodiment of the cooling device, it can be provided that the two films are different from one another. The thermal properties of the cooling device can thus be improved in that the respective film can be better adapted to its intended use. For example, the foil lying on a cell of the accumulator can be made thinner.
    So the other foil of the envelope will lead.
    According to further design variants of the cooling device, it can be provided that it is approximately plate-shaped or has an L-shaped cross section
    is, with which their installation in an accumulator can be improved.
    For a more compact design of the accumulator, a further cooling device can be provided according to a variant of the accumulator
    is arranged, which rests against the cooling device.
    For a better understanding of the invention, it will be based on the following
    Figures explained in more detail.
    They each show in a simplified, schematic representation:
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    devices in an oblique view;
    2 shows a variant embodiment of the arrangement of a cooling device in the accumulator; 3 shows a further variant embodiment of the arrangement of a cooling device
    in the accumulator;
    4 shows a variant embodiment of the cooling device in an exploded view; 5 shows a variant embodiment of the cooling device in plan view;
    6 shows a variant embodiment of an evaporation element;
    7 shows another embodiment variant of an evaporation element;
    8 shows a variant embodiment of the cooling device in an exploded view; 9 shows a schematic representation of the heat transport within a
    Cooling device;
    Fig. 10 is a schematic representation of the heat transport within a
    L-shaped cooler;
    11 shows a further embodiment variant of the cooling device in side view
    cut.
    By way of introduction, it should be noted that in the differently described embodiments, the same parts are provided with the same reference symbols or the same component designations, whereby the disclosures contained in the entire description can be transferred accordingly to the same parts with the same reference symbols or the same component names. The location details chosen in the description, such as above, below, to the side, etc., refer to the figure immediately described and shown and these position
    in the event of a change in position, information must be transferred to the new position accordingly.
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    sen.
    The accumulator 1 has several cells 3 for storing electrical energy. The cells 2 are cylindrical. The cooling devices 2 are arranged between the cells 3 and lie on lateral surfaces 4 of the cells 3
    on, especially immediately.
    The cells 3 are preferably surrounded by a housing 5, which is only shown in part. Also not shown in Fig. 1 is the electrical contact
    cell positioning 3.
    The arrangement of the cooling devices 2 in the accumulator 1 according to FIG. 1 is selected in such a way that two rows of cells 3 can always be cooled or temperature-controlled with one cooling device 2. As FIGS. 2 and 3 show schematically, the arrangement of the cooling devices 2 can also be selected differently. For example, each row of cells 3 can be cooled or tempered with a cooling device 2, as shown in FIG. 2, or the cooling devices 2 can extend over more than two rows of cells 3, for example three, as shown in FIG. 3 is shown. Other arrangements of the cooling devices 2 between
    between the cells 3 are also conceivable.
    FIG. 2 also shows an embodiment with only one row of cells 3. The arrangement of at least one further row of cells 3 is shown in dashed lines, the stacking of the cells not being in gaps, as is the case with the accumulator 1 according to FIG. 1 is the case. So cells 3 can also be different
    Lich be stacked in the accumulator 1.
    As can be seen from FIGS. 1 to 3, the cooling device 1 is wave-shaped.
    formed, as will be explained in more detail below. However, it is already on
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    It is noted at this point that the wave shape is formed by a cover 6 of the cooling device 2, for which purpose this cover 6 is preformed and designed to be inherently rigid, and / or is achieved by a wave-shaped element which is attached to the cover 6.
    is ordered.
    The term “inherently stiff” means that the shell 6 retains the shape that was given to it in a shaping process. The shell 6 is therefore not
    formed pliable.
    It should also be explained that the term “waveform” in the context of the invention is not limited to round shapes. The waveform can also have other shapes, such as a triangular shape, a rectangular shape, a square shape, etc., for example. However, a round wave shape is preferred, for example a Si
    nut-shaped formation of the wave course.
    In general, the size of the individual waves of the waveform depends on the size of the cells 3, in particular the circumference of the shell of the cells 3, in order to ensure that the cooling device 2 rests properly on the cells 3, as they do
    for example, from FIGS. 1 to 3 can be seen to enable.
    In Fig. 4, a first embodiment of the cooling device 2 is shown. The cooling device 2 comprises a shell 6 which forms an interior 7. At least one evaporation element 8 is arranged in the interior 7. A working medium (not shown) is also contained in the interior space 7. The working medium can be water, for example. However, other liquids or gases can also be used as long as the condition is met that the working medium can at least partially evaporate and condense again during operation of the cooling device 2 in order to cool the cooling device 2.
    equipped object to achieve.
    The shell 6 consists of or comprises at least one film made of a polymer
    or with a polymer material.
    A polymer material within the meaning of the invention is a material made of polymer
    ren made by known reactions from monomers or oligomers
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    are. In particular, the polymeric material is a plastic made from organic pol-
    Iymeren.
    It is possible for the cover 6 to consist of only a single film that is folded on one side and welded or glued on the other sides to form the interior space 7. According to a preferred embodiment variant, however, the casing 6 has a first film 9 and a second film 10. The first film 9 can have a first side part and the second film 10 a second side part of the cooling
    Form device 2, or vice versa.
    In principle, the film or the first and second films 9, 10 can be configured as a single layer, for example consist of a plastic selected from a group consisting of PE, PP, POM, PA, PPS, crosslinked polyolefins, thermoplastic elastomers on ether - / ester base, styrene block copoly-
    mers, silicone elastomers.
    According to one embodiment variant, a composite film which is formed from at least one polymeric material and at least one metal film is preferably used as the film or as the first and second films 9, 10. The polymeric material can be a plastic selected from a group consisting of PE, PP, POM, PA, PPS, crosslinked polyolefins, thermoplastic elastomers based on ethers / esters, styrene block copolymers, silicone elastomers.
    The polymeric material is preferably PE or PP or PA6.
    The metal foil can for example be an aluminum foil or a copper foil or a gold foil or a silver foil. Instead of a metal film, a metallized plastic film can also be used, the plastic preferably being made of
    the above-mentioned group of plastics is selected.
    The metal foil can form the outer or the inner layer of the composite foil. The inner layer is that layer that faces the interior. However, mixed versions are also possible. For example, the first foil 9 can have the metal foil on the inside and the second foil 10 on the outside of the metal foil, or vice versa.
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    More than two-layer designs of the composite film are also possible, for example three-layer or four-layer. In this case, at least one of the further layers can consist of a polymer material, in particular
    their one plastic selected from the group mentioned above.
    In the case of more than two-layer versions of the composite film, the metal
    Layer be arranged between two layers of a polymer material each. In this case, one of the layers is preferably formed from what is known as a sealing film, via which the first film 9 is connected to the second film 10. The two sealing films are preferably partially in direct contact with one another, that is to say form the
    innermost layers of the composite film facing the interior.
    The metal foil can have a layer thickness between 7 μm and 50 μm, in particular
    between 10 µm and 20 µm.
    The layer made of the polymer material, in particular the plastic, can have a layer thickness between 10 μm and 200 μm. If the composite film has several such layers, each of these layers can have a layer thickness
    selected from this area.
    The composite film can also have a reinforcing layer. The reinforcement layer preferably comprises or consists of a fiber reinforcement. The fiber reinforcement is preferably designed as a separate layer that is arranged between two layers of polymer material. The fiber reinforcement can, however, also be arranged within a layer made of polymer material. The polymer material is preferably a plastic, in particular selected from
    the group of plastics mentioned above.
    The fiber reinforcement can be formed from fibers and / or threads that are selected from a group comprising or consisting of glass fibers, aramid fibers, carbon fibers, mineral fibers such as basalt fibers, natural fibers
    sern, such as Hemp, sisal, and combinations thereof.
    The reinforcement layer improves rigidity and strength.
    be enough. The composite film can furthermore have a reduced thermal expansion
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    exhibit, which in the event of temperature changes leads to less tension in the cooling
    device 2 leads.
    The first and the second film 9, 10 with the same surface area are preferred
    expansion (viewed from above) is used.
    According to another embodiment variant, it can be provided that the first film 9 is different from the second film 10. For example, one of the two films 9, 10 can have a thinner sealing film than the other of the two films 9, 10.
    As mentioned, the film or the first and second films 9, 10 can be welded to one another. For this purpose, a welding frame 11 made of a plastic, in particular selected from one of the aforementioned plastics, can be used, which has a surface area that is greater than the area of the interior 7 but smaller than the area of the cooling device 2 (in each case in plan view viewed), as can be seen from Fig. 5, which shows a variant of the cooling device 2 in plan view. This welding frame 11 is arranged between the film parts when only one film is used or between the first and second films 9, 10. As a result of the welding, the welding frame 11 is connected to the film parts or to the first and second films 9, 10 and, together with them, forms a tight weld seam. It is thus possible to make the composite film (s) thinner and thus to improve the thermal properties of the cooling device 2, since the higher layer thickness for producing the sealing
    th weld is provided by the welding frame 7.
    According to a further embodiment variant, it can be provided that the said film or the first and / or the second film 9, 10 are preformed in order to be able to better design the interior 7 or to improve the assembly of the cooling device 2. For this purpose, the said film or the first and / or the second film 9 10 can be at least approximately trough-shaped.
    are formed to better insert the at least one evaporation element 8
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    to be able to. The preform can e.g. in a hydraulic or pneumatic
    Press take place, especially at elevated temperature.
    In the embodiment variant of the cooling device 2 according to FIG. 4, the film or the first and / or the second film 9, 10 are preformed with a round wave shape. If the tub-shaped preforming described is also pre-
    exist, the waveform will overlay it.
    In Fig. 6 a first variant of the evaporation element 8 is shown in an oblique view. The evaporation element 8, which is used in particular in the cooling device 2 according to FIG. 4, is plate-shaped and has a holding element 12 on which several knob-shaped structural elements 13 are arranged. The knob-shaped structural elements 13 protrude beyond the surface of the holding element 12 in one direction, i.e. upwards o-
    the down.
    In Fig. 7 a variant of this evaporation element 8 is shown. The only difference from that according to FIG. 6 is that the knob-shaped structural elements 13, in particular, the plate-shaped holding element 12
    probably protrude upwards as well as downwards.
    The evaporation element 8 according to FIG. 6 or FIG. 7 is preferably made from a polymer material, in particular from an organic plastic. The organic plastic can be selected from the aforementioned group of plastic
    fabrics must be selected.
    In these design variants of the evaporation element 8, provision can also be made for the holding element 12 and the structural elements 13 to be fitted.
    are square, in particular tool-off, formed.
    In general, the holding element 12 can also have the aforementioned wave-conveying
    Form mig-shaped element in the cooling device 2.
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    In these embodiment variants of the evaporation element 8, the knob-shaped structural elements 13 are at least approximately cylindrical, in particular cylindrical. They can have a diameter 14 which is selected from a range from 1 mm to 10 mm, in particular from a
    in a range from 1 mm to 3 mm.
    Furthermore, they can have a height 15 which is selected from a range from 1 mm to 10 mm, in particular from a range from 1 mm to 5 mm. The height 11 is measured from the surface of the holding element 12. The holding element 12 itself can have a thickness in the direction of the height 15, which is selected from a range of 0.1 mm to 3 mm, in particular from a loading
    ranging from 0.3mm to 1.5mm.
    In the case of the embodiment variant of the evaporation element 8 according to FIG. 7, the height 15 of the structural elements 13 on both the upper side and on the lower side of the holding element 12 can be selected from the range mentioned for the height 15. The knob-shaped structural elements 13 can have the same height 15 on both sides or a larger overhang on one side
    have over the holding element 12 than on the other side.
    A maximum distance 16 between immediately adjacent structural elements 13 can be selected from a range from 0.5 mm to 20 mm, in particular
    from a range of 1 mm to 10 mm.
    The knob-shaped structural elements 13 can be arranged in rows and columns, as can be seen from FIGS. 6 and 7. But you can also have one
    have a different geometric arrangement on the holding elements 13.
    The knob-shaped structural elements 13 are used in particular to form a
    nes gas space in the interior 7 of the cooling device 2.
    The evaporation element 8 can have a rectangular base area. However, other geometries are also possible, for example a square,
    a triangular, etc.
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    To increase the thermal conductivity, a thermally conductive plastic can be used for the production of the holding element 12 and / or the knob-shaped structural elements 13. This can be achieved, for example, in that
    the base polymer thermal conductivity particles, e.g. Particles of hexagonal
    Boron nitride or graphite.
    Although the evaporation element 8 is shown flat in FIGS. 4, 6 and 7, within the scope of the invention there is also the possibility that the element
    Ment, which is arranged in the interior 7 of the cooling device 2 and has the wave shape, is formed by the evaporation element 8. This can then
    accordingly be preformed into the wave shape.
    As can be seen from FIG. 4, in the cooling device 2 there is preferably at least one mat 17 made of or with inorganic fibers between the casing 6 and the evaporation element 8. In the specifically illustrated embodiment, such a mat 17 is arranged on both sides of the evaporation element 8, that is to say above and below the evaporation element 8. The mat (s) 17 can be formed in one or more layers. The purpose of the mat (s) 17 is to improve the horizontal heat conduction, as described above.
    has already been carried out.
    If the mat (s) 17 are present, they can form the wave-shaped element in the interior space 7 of the shell 6 of the cooling device 2. In this case, the mat 17 or mats 17 are preferably designed with a greater layer thickness, which gives the mat (s) 17 an inherent rigidity which enables the wavy shape to be maintained after the mat (s) 17 has been shaped. If necessary, this inherent rigidity can also be achieved by a polymer / synthetic resin which is embedded, for example, between the fibers of the mat (s) 17. When heated, this polymer / synthetic resin can melt or become soft and
    support or enable the development of the inherent rigidity.
    According to a variant embodiment of the cooling device 2, which is also shown in FIG. 4, in the presence of more than one evaporation element
    8 in the interior 7 of the cooling device 2 at least one further mat 18 from or
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    be arranged with inorganic fibers. This can be arranged in an approximately meandering shape so that the evaporation elements 8 alternately abut this further mat 18 above and below, as is the case
    from the illustration of the cooling device 2 in FIG. 1 results.
    If the further mat 18 is present, it can form the wave-shaped element in the interior 7 of the shell 6 of the cooling device 2. Please refer to the
    pending remarks on mat 17.
    The mat 17 and the further mat 18 can consist of inorganic fibers. The fibers can be selected from a group comprising or consisting of glass fibers, mineral fibers, such as, for example, basalt fibers, etc. Glass fibers are particularly preferably used. In particular, glass fibers in the narrower sense, that is to say with a silicate structure, for example quartz glass or glass made from SiO2 as the main component, are used as glass fibers
    was used.
    The mat (s) 17 and the further mat 18 can be a scrim, a knitted fabric
    Fleece, a woven fabric, etc., be made from the fibers.
    The mat (s) 17 and / or the further mat 18 can have a weight per unit area of between 30 g / m and 800 g / m , in particular between 50 g / m and 600 g / m ®. Furthermore, the mat (s) 17 and / or the further mat 18 can one or
    be made in several layers.
    The mat (s) 17 and / or the further mat 18 can be at least 80%, in particular at least 90%, preferably at least 99.9%, from the inorganic
    niche fibers exist.
    Furthermore, the mat (s) 17 and / or the further mat 18 are preferably cleaned before they are used in the cooling device 2, for example by means of a LÖÖ-
    solvent or thermal. The mat (s) 17 and / or the further mat 18 are preferably located directly on the
    knob-shaped structural elements 13.
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    However, it can also be provided that the fibers are in a matrix, in particular an open-pored matrix, e.g. made of a plastic, at least partially
    are bedded.
    According to a further embodiment variant, it can be provided that the evaporation element 8 or that the evaporation elements 8 have strip-shaped elements 19. According to a further embodiment variant of the cooling device 2, this or these can form the aforementioned welding frame 11 (FIG. 5) and / or a support frame. In the case of several evaporation elements 8, the strip-shaped elements 19 are arranged in such a way that the welding frame 11 results when all evaporation elements 8 are in one plane.
    are arranged side by side.
    FIGS. 8 to 10 show further and possibly independent design variants of the cooling device 2, the same reference numerals or component designations being used for the same parts as in FIGS. 4 to 7. In order to avoid unnecessary repetition, reference is made to or reference is made to the detailed description of the preceding FIGS. 4 to 7, in particular to the mat 17, the cover 6, the statements on the arrangement
    tion of the knob-shaped structural elements 13, etc ..
    The cooling device 2 according to FIG. 8 again has the casing 6, which is formed in particular from the first film 9 and the second film 10, which forms the interior space 7 that receives the working medium, an at least one-layer mat 17 made of or with inorganic fibers, in particular Glass fibers and at least one evaporation element 8. The mat 17 made of or with inorganic fibers is arranged between the evaporation element 8 and the first film 9. As in the previous embodiment variants of the cooling device 2, the evaporation element 8 serves to transfer at least part of the working
    mediums from the liquid to the gaseous state.
    The evaporation element 8 has the, for example plate-shaped, holding element
    ment 12 and the knob-shaped structural elements 9.
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    In contrast to the previous embodiment variants of the cooling device 2, the knob-shaped structural elements 13 are not made of plastic, but of glass, that is to say are glass elements. These glass elements are produced in particular from a glass powder using a sintering process. For this purpose, a glass powder is preferably used, the grain size of which is between 25 μm and 250 μm, in particular between 50 μm and 150 μm. But there are also powdered glass
    can be used with other grain sizes.
    In general, nub-shaped structural elements 13 of porous design are preferred. As mentioned, these can be formed by glass elements. But they can also consist of other materials, for example as ceramic elements
    elements or be designed as sintered copper elements.
    In general, the porosity of the knob-shaped structural elements 13 can be between 5% and 50%, in particular between 10% and 30%. The porosity denotes the ratio of the void volume to the total volume of the
    Structural elements 13. The porosity can, for example, with a porosimeter 0-
    which are measured by the Archimedesian water displacement method.
    The pores of the porous knob-shaped structural elements 13 can have a maximum diameter between 50 μm and 250 μm, in particular between 75 μm
    and 150 µm.
    The sintering process creates porous structural elements 13 which participate in the capillary liquid transport within the cooling device 2. So they can act as capillary pumps. For the vertical transport of liquid or heat, these structural elements 13 can be in contact, as in the preceding embodiment variants of the cooling device 2, with the respective layers or plies of the cooling device 1 arranged below and above it, in particular
    especially in direct contact.
    In this embodiment variant of the cooling device 2, the knob-shaped structural elements 13 preferably have an at least approximately mushroom-shaped habit
    on. The maximum diameter 14 of these structural elements 13 can be selected
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    from a range from 3 mm to 20 mm, in particular from a range from 5 mm to 15 mm. With regard to the height 15 of the and the maximum distance 16 between the knob-shaped structural elements 13, reference is made to the above
    Guided tours referenced.
    The knob-shaped structural elements 13 of this embodiment variant are not connected to one another, but are individual elements. In order to be able to handle these better, the holding element 12 is provided with recesses or openings 20, into each of which a structural element 13 is inserted. In this case, the maximum diameter of the openings 20 is preferably smaller than the maximum diameter of the structural elements 13, so that although they can be inserted into the openings 20, they rest with the “mushroom head” on the holding element 12.
    gene.
    In general, the knob-shaped structural elements 13 can have a shape that they can be arranged both protruding into the opening 20 and resting on the holding element 12. For example, like the structural elements 13 shown in FIG. 8, they can have a support surface that extends at least in regions over the circumference. This support surface can e.g. on a web or a cross-sectional expansion, for example a step-shaped
    setting, be trained.
    It should be mentioned by way of illustration in this context that the knob-shaped structural elements 13 do not have to be designed in the form of a knob, but that the “knob shape” can be seen in interaction with the holding element 12. The evaporation element 8 as a whole therefore has the nub-shaped surface.
    According to a variant embodiment of the cooling device 2, the holding element 12 can be designed in the form of a plate. Furthermore, the shape of the openings 20 is preferably adapted to the shape of the structural elements 13. For example, the openings 20 can be circular if the structural elements 13 have a cylindrical section that extends into or through the openings 20.
    is inserted or inserted through.
    N2019 / 18400-AT-00
    Furthermore, the holding element 12 is preferably made of a polymeric material, in particular a plastic, preferably selected from the above
    named plastics, for example PE.
    According to a further variant, it can be provided that the polymer material is a hydrophilic plastic, for example a polyamide (e.g. PA 6, PEI). Instead of a hydrophilic plastic, a hydrophobic plastic can also be used which has a hydrophilic coating or the surface of which has been made hydrophilic, for example fluorinated. In general, a plastic can be used for this embodiment variant that has a polar surface, the wetting angle for water between 0 ° and 45 °, in particular between 0 ° and 20 °. The contact angle measurement is based on the DIN 55660-2: 2011-12
    called procedure.
    According to a further embodiment variant of the cooling device 2, the holding element 12 can be connected to the mat 17 with connecting elements 21, which are arranged, for example, in the corner regions of the holding element 12. For this purpose, according to a further embodiment variant, the mat 17 can also have corresponding recesses or openings 22 into or through
    which the connecting elements 21 can be plugged.
    According to another embodiment of the cooling device 2, it can be provided that between the shell 6 and the evaporation element 8, in particular between the mat 17 and the first film 9, at least one plastic element 23 is arranged, which in particular consists of a hydrophilic polymer material or a polymer Material with a hydrophilic surface consists. With regard to hydrophilicity, reference is made to the statements above.
    sen.
    The plastic element 23 is preferably formed from PA or PE.
    N2019 / 18400-AT-00
    The plastic element 23 is designed in particular in the form of a plate and preferably has a surface area that is at least approximately as large as
    those of the mat 17 or the evaporation element 8.
    It should be pointed out in this connection that in the embodiment variant of the cooling device 2 according to FIG. 8, the evaporation element 8 has a surface area which is at least approximately as large as that of the
    Mat 17, each viewed in plan view.
    In general, in all embodiment variants of the cooling device 2, the plastic element 23 and / or the holding element 12 can have a thickness which is selected from a range from 0.4 mm to 4 mm, in particular from a
    Range from 0.5mm to 1mm.
    As an alternative to the plastic element 23, the first film 9 of the cover 6 can have a layer with hydrophilic properties, the layer being the innermost, i.e. the position of the first film 9 facing the interior 7. The effect of the arrangement of the plastic element 23, namely the formation of a capillary channel between the holding element 12 and the plastic element 23, can thus also be achieved.
    be enough.
    It is also possible that a metal plate or metal layer is used instead of the plastic element 23, in particular a copper plate or copper layer.
    The mat 17 preferably rests directly on the knob-shaped structural elements 13, in particular on the underside thereof, which faces the first film 9 of 6 2
    is. The liquid transport can thus be improved.
    According to an embodiment variant of the cooling device 2 according to FIG. 8, it can also be provided that a mat 17 made of or with inorganic fibers is arranged on the upper side of the knob-shaped structural elements 13 (in particular directly adjacent to the structural elements 13), i.e. that side which the
    second slide 10 is facing. With this variant, the distribution
    N2019 / 18400-AT-00
    Development of the liquid (the working medium in the liquid state) can be improved by the structural elements 13 over the entire surface of the evaporation element 8. In the area of condensation of the working medium in the cooling device 2, the removal of the condensed working medium can thus be accelerated.
    need to be.
    According to a further embodiment variant of the cooling device 2, at least one metal element 24 can be attached between the casing 6 and the evaporation element 8.
    be orderly.
    The metal element 24 is preferably made of copper. But it can also be a different metal, e.g. Aluminum, or a metal alloy, e.g. a copper alloy,
    can be used.
    The metal element 24 can have a thickness which is selected from a range from 0.2 mm to 1 mm, in particular from a range from 0.3 mm to 0.5 mm. Furthermore, the metal element 24 can be preformed, for example trough-shaped, with which the interior 7 can be formed better. With the metal element 24, the cooling device 2 can, among other things, provide better mechanical
    cal stability are given.
    The metal element 24 can have a surface extension that at least approximately corresponds to that of the evaporation element 8 or that between the surface extension of the evaporation element 8 and that of the second film
    10 is, each viewed in plan view.
    In these design variants of the cooling device 2 with the plastic element 23 and / or the metal element 24, the plastic element 23 and / or the metal element 24 can incorporate the aforementioned wave-shaped element.
    Form within the shell 6 of the cooling device 2.
    As can be seen from FIGS. 9 and 10, the cooling device 2 can be designed approximately in the form of a plate or with an L-shaped cross section. "Almost flat
    ten-shaped "takes into account that the cooling device 2 has at least one wave
    N2019 / 18400-AT-00
    has shaped surface. 9 and 10 show a cooling device 2 according to the embodiment variant according to FIG. 8. However, these shapes of the cooling device 2 are also applicable to the other embodiment variants of the cooling device.
    tion 2 is applicable.
    In the L-shaped configuration, the cooling device 2 has a first section 25 and a second section 26. In the second section 26, the heat (arrows 27) is absorbed by evaporation of the working medium. The gaseous working medium is then passed into the first section 25, in which the condensation of the working medium takes place by releasing heat to the environment (arrows 28).
    The first section 25 can also be non-wave-shaped, i. E. with a flat surface, since it does not lie against the cells 3 (Fig. 1). The second
    section 26, however, has the undulating surface.
    The components of the cooling device 2 are preferably arranged in the interior space 7 in the heat-emitting zone opposite to the heat-absorbing zone. I.e. that e.g. the metal element 24 is arranged in the heat-emitting section 25 adjacent to the first film 9 of the shell 6 and in the heat-absorbing section 26 adjacent to the second film 10 of the shell 6. In the heat-absorbing section 26, the cooling device 2 can have the sequence first film 9, plastic element 23, mat 17, holding element 12 with the structural elements 13, metal element 24, second film 10. In the heat-emitting section 25, the cooling device 2 can have the sequence first film 9, metal element 20, holding element 12 with the structural elements 13, mat 17, plastic element 23, second fo
    lie 10.
    It is also possible that between the structural elements 13, the holding element 12 and the plastic element 23 in the section 25, a reservoir for not
    condensable gases is formed.
    N2019 / 18400-AT-00
    As shown in FIG. 1, the cooling device 2 can be arranged in the accumulator 1 in such a way that the heat-absorbing, second section 26 between the cells 3 and the heat-emitting, first section 25 are outside the area of the cells 3 in the accumulator 1. This also applies to the approximately plate-shaped designs of the cooling device 2. It is thus possible to arrange one or more further cooling device (s) 29 (secondary cooler) in the areas of the first sections 25, in particular directly adjacent to the first section 25 of the cooling device 2.
    The heat from the cooling device 2 is given off via the first sections 25 to the further cooling device 29, which then extracts the heat from the
    Area of the accumulator 1 transported away.
    The further cooling device 29 can be a liquid cooler, as shown in FIG. 1, and can be incorporated into the cooling system of a motor vehicle, for example.
    be bound.
    But it is also possible that the further cooling device 29 is an air cooler or gas cooler. The versions differ only in the size of the further cooling device 29. The air or gas cooler is in comparison to the
    Liquid cooler preferably designed larger.
    In general, however, the further cooling device 29 can be an evaporation cooler (refrigerant evaporator) or can be integrated into the circuit of an evaporation cooler (refrigerant evaporator), for example in the circuit of a
    Air conditioning of a motor vehicle.
    In FIG. 11, a further embodiment variant of the cooling device 2 is shown in section in a side view. In this embodiment, a foam element 30 is arranged in the interior 7 of the shell 6. Between the foam element 30 and the shell 6, which is preferably again formed from the first and second films 9, 10, the mat 17 made of or with the inorganic fibers is in turn attached.
    orderly. Preferably, the foam element 30 is on at least four sides of the
    N2019 / 18400-AT-00
    Surrounding mat 17, in particular completely encased. Further between the
    second film 10 and the mat 17 and the metal element 24 can be arranged.
    This cooling device 2 can in turn have several of these evaporation elements 8 in the interior 7, similar to that embodiment variant according to FIG. 4, in which case the several foam elements 30 according to a further embodiment variant are each completely surrounded by a mat 17
    could be.
    The foam element 30 can be a metal foam, for example a copper foam or a nickel foam, or a plastic foam, etc. In general, the foam element 30 preferably has an inherent rigidity that is so great that
    that the foam element 30 is self-supporting.
    Furthermore, the foam element 30 can also have the aforementioned wave-conveying
    forming element.
    The foam element 30 preferably has a porosity of at least 70%, in particular at least 80%, preferably at least 90%. With regard to the
    Measurement of the porosity is referred to above.
    The pores of the foam element 30 can have a maximum diameter between
    0.5 mm and 5 mm, in particular between 1 mm and 1.3 mm.
    Due to the porosity, the foam element 30 again provides the gas channels for the gas transport. The liquid can be transported via the mat 17
    consequences.
    The foam element 30 can also have knob-shaped structural elements 13
    (e.g. Fig. 6 or Fig. 8).
    In general, the at least one evaporation element 8 within the scope of the invention
    preferably completely (on all sides) surrounded by the shell 6.
    N2019 / 18400-AT-00
    The cooling device 2 can, however, not only be used to cool the cells 3 of an accumulator 1, but also generally to cool an accumulator 1 or a battery pack with several accumulators 1, or of electronic
    components, of electric motors, etc ..
    In the above explanations, components of the cooling device 2 itself, which are primarily used for cooling, were named as a wave-shaped element which is arranged in the interior 7 of the cooling device 2 in order to give at least the surface of the cooling device 2 the wave shape. However, within the scope of the invention there is also the possibility that a separate, dedicated element is arranged for this in the cooling device 2, for example a dedicated
    Speaking wave-shaped plastic element.
    If not only the surface of the cooling device 2 should have the wave shape, but the cooling device 2 itself is wave-shaped, there is the possibility that one or more components of the cooling device 2 are preformed in the wave shape, i.e. have sufficient inherent rigidity to keep this wave shape upright to obtain. If not all components of the cooling device 2 meet these requirements, these components can be designed to be elastically yielding so that they take the shape of the other or the other
    take over preformed components.
    The exemplary embodiments show possible design variants of the cooling device 2 or the accumulator 1, it being noted at this point that also
    Combinations of the individual design variants with one another are possible.
    For the sake of order, it should finally be pointed out that for a better understanding of the structure of the cooling device 2 or the accumulator 1, these
    are not necessarily shown to scale.
    For the sake of clarity, it should finally be pointed out that, for a better understanding of the structure, some elements are not to scale and / or enlarged
    and / or shown reduced.
    N2019 / 18400-AT-00
    28
    List of reference symbols
    Accumulator cooler cell
    Casing surface
    Shell
    Interior evaporation element foil
    Foil welding frame retaining element structural element diameter height
    distance
    mat
    mat
    Element breakthrough connecting element breakthrough plastic element metal element section section
    arrow
    Arrow cooler
    Foam element
    N2019 / 18400-A T-00
    权利要求:
    Claims (24)
    [1]
    1. Cooling device (2) comprising a shell (6) made of at least one single or multilayer film (9, 10) which forms an interior space (7) in which a working medium and at least one evaporation element (8) for transferring at least part of the working medium from the liquid to the gaseous state, characterized in that at least the surface of the cooling device (2) has a wave shape, for which purpose the single- or multilayer film (9, 10) is preformed and designed to be inherently rigid and / or for which purpose in the interior (7 ) at least one wave-shaped element is arranged, which the surface
    che gives the waveform.
    [2]
    2. Cooling device (2) according to claim 1, characterized in that between the evaporation element (8) and the shell (6) at least one mat
    (17) is arranged from / with inorganic fibers.
    [3]
    3. Cooling device (2) according to claim 2, characterized in that the wave-shaped element through the mat (17) made of / with inorganic fibers
    is formed.
    [4]
    4. Cooling device (2) according to one of claims 1 to 3, characterized in that the evaporation element (8) knob-shaped structural elements
    has elements (13) and / or is designed as a foam element (30).
    [5]
    5. Cooling device (2) according to claim 4, characterized in that
    the wave-shaped element is formed by the evaporation element (8).
    [6]
    6. Cooling device (2) according to one of claims 1 to 5, characterized in that in the interior (7) of the casing (6) several evaporation elements
    elements (8) are arranged.
    N2019 / 18400-AT-00
    [7]
    7. Cooling device (2) according to claim 1 to 6, characterized in that the evaporation element (8) made of a polymeric material and one piece
    is formed square.
    [8]
    8. Cooling device (2) according to claim 7, characterized in that a mat (18) made of / with inorganic between the evaporation elements (8)
    Fibers is arranged.
    [9]
    9. Cooling device (2) according to claim 7, characterized in that the wave-shaped element through the mat (18) made of / with inorganic fibers
    is formed.
    [10]
    10. Cooling device (2) according to claim 4 to 9, characterized in that the knob-shaped structural elements (13) are porous, in particular by glass elements or by ceramic elements or by sintered copper
    ferelemente are formed.
    [11]
    11. Cooling device (2) according to claim 4 to 10, characterized in that the evaporation element (8) has a holding element (12) in or on
    which the knob-shaped structural elements (13) are held.
    [12]
    12. Cooling device (2) according to claim 11, characterized in that the holding element (12) is plate-shaped and made of a polymer material.
    [13]
    13. Cooling device (2) according to claim 12, characterized in that
    the polymer material is a hydrophilic plastic.
    [14]
    14. Cooling device (2) according to one of claims 11 to 13, characterized in that the wave-shaped element is formed by the holding element (12).
    N2019 / 18400-AT-00
    [15]
    15. Cooling device (2) according to one of claims 1 to 14, characterized in that between the shell (6) and the evaporation element (8) at least one plastic element (23) made of a hydrophilic polymer material
    is arranged.
    [16]
    16. Cooling device (2) according to one of claims 1 to 15, characterized in that between the shell (6) and the evaporation element (8) to-
    at least one metal element (24) is arranged.
    [17]
    17. Cooling device (2) according to claim 15 or 16, characterized in that the wave-shaped element is formed by the plastic element (23).
    [18]
    18. Cooling device (2) according to claim 16, characterized in that
    the wave-shaped element is formed by the metal element (24).
    [19]
    19. Cooling device (2) according to one of claims 1 to 18, characterized in that the shell (6) is at least partially made of a composite film
    at least one polymeric material and a metal foil is formed.
    [20]
    20. Cooling device (2) according to one of claims 1 to 19, characterized in that the casing (6) consists of two interconnected foils (9, 10)
    is formed.
    [21]
    21. Cooling device (2) according to claim 20, characterized in that
    the two foils (9, 10) are different from one another.
    [22]
    22. Cooling device (2) according to one of claims 1 to 21, characterized in that it is approximately plate-shaped or with L-shaped transverse
    cut is formed.
    N2019 / 18400-AT-00
    [23]
    23. Accumulator (1) with several cells (3) for storing electrical energy and at least one cooling device (2) for cooling or temperature control for the cells (3), characterized in that the cooling device (2) according to one of claims 1 to 24 is formed and at least partially
    is arranged between the cells (3).
    [24]
    24. Accumulator (1) according to claim 23, characterized in that a further cooling device (29) is arranged, which is attached to the cooling device (2)
    is applied.
    N2019 / 18400-AT-00
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    同族专利:
    公开号 | 公开日
    DE112020002807A5|2022-03-03|
    AT522326B1|2020-10-15|
    WO2020247995A1|2020-12-17|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    US20080210407A1|2005-01-06|2008-09-04|Celsia Technologies Korea Inc.|Heat Transfer Device and Manufacturing Method Thereof Using Hydrophilic Wick|
    US20170005379A1|2015-06-30|2017-01-05|Hong Michael Dang|Methods, systems and apparatus for battery with thermal transfer layer|
    CN107017448A|2017-03-22|2017-08-04|溧阳市英创机电技术有限公司|A kind of heat exchanger|
    US6382309B1|2000-05-16|2002-05-07|Swales Aerospace|Loop heat pipe incorporating an evaporator having a wick that is liquid superheat tolerant and is resistant to back-conduction|
    DE102008054958A1|2008-12-19|2010-07-01|Robert Bosch Gmbh|Tempering system for tempering energy storage system having electrical storage, particularly chargeable battery, of motor vehicle, has heat transport device for thermal binding of electrical storage|
    US10847760B2|2017-11-13|2020-11-24|Lg Chem, Ltd.|Battery module having heat pipe and battery pack including the same|CN113285142A|2021-05-20|2021-08-20|广东工业大学|Phase change material composite liquid cooled battery thermal management device and application thereof|
    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    ATA50528/2019A|AT522326B1|2019-06-13|2019-06-13|Cooling device|ATA50528/2019A| AT522326B1|2019-06-13|2019-06-13|Cooling device|
    DE112020002807.0T| DE112020002807A5|2019-06-13|2020-06-10|cooler|
    PCT/AT2020/060236| WO2020247995A1|2019-06-13|2020-06-10|Cooling device|
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