• 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 an accumulator (1) with at least one storage module for electrical energy and at least one cooling device (2) for cooling or temperature control for the at least one storage module, the cooling device (2) having a single or multilayer film (4, 9) and this film (4, 9) bears against the at least one memory module. The cooling device is provided with at least one stiffening element (19).
    公开号:AT521296A1
    申请号:T50475/2018
    申请日:2018-06-12
    公开日:2019-12-15
    发明作者:Ing Stefan Gaigg Dipl；Franz Pöhn Bsc
    申请人:Miba Ag；
    IPC主号:
    专利说明:

    Summary
    The invention relates to an accumulator (1) with at least one storage module for electrical energy and at least one cooling device (2) for cooling or temperature control for the at least one storage module, the cooling device (2) having a single or multilayer film (4, 9) and this film (4, 9) bears against the at least one memory module. The cooling device is provided with at least one stiffening element (19).
    Fig. 4/41
    N2018 / 13200 AT-00
    The invention relates to an accumulator with at least one storage module for electrical energy and at least one cooling device for cooling or temperature control for the at least one storage module, the cooling device having a single-layer or multilayer film and with this film resting on the at least one storage module.
    The service life and the effectiveness as well as the safety of a rechargeable battery for so-called e-mobility also depend on the temperature during operation. For this reason, various concepts for cooling or tempering the batteries have already been proposed. The concepts can essentially be divided into two types, namely air cooling and water cooling or generally cooling with liquids.
    For the water cooling, heat sinks are used in which at least one coolant channel is formed. These heat sinks are arranged between the individual modules of the accumulator or on the modules. A module is an independent unit of the accumulator, not necessarily just a cell.
    The heat sinks are exposed to changing temperatures. This in turn means that the heat sinks are exposed to changing pressures. This can lead to cooling problems if the contact between the heat sink and the heat source is partially lost.
    The present invention has for its object to improve the safety of cooling an accumulator.
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    The object of the invention is achieved in the aforementioned battery in that the cooling device is provided with at least one stiffening element.
    The object of the invention is also achieved in the above-mentioned accumulator in that the cooling device is provided with at least one overpressure element.
    The advantage here is that the stiffening element prevents or at least reduces the bending of the film and thus its lifting off the cells due to pressure changes. The installation of the cooling device on the cells can thus be improved over larger temperature ranges and thus their cooling effect. The at least one overpressure element can also be used to prevent the film from being lifted off when the pressures are too high, which can likewise improve the efficiency of the cooling of the rechargeable battery. Another advantage of the two measures is that the film can still be used for the cooling device so that it does not have to be changed to stiffer and therefore heavy materials.
    According to an embodiment variant of the accumulator, it can be provided that the stiffening element is at least one concave or convexly curved surface element. The above-mentioned effects, in particular with regard to the slight increase in weight due to the additional material for the stiffening element, can thus be further improved, since the curvature can give the stiffening element a favorable residual stress which counteracts the lifting off of the film, as a result of which the stiffening element is thinner can be executed.
    For reasons of better material utilization, it can also be provided that the concave or convex curved surface element is integrated in the battery cover or at least partially forms it. The cooling device can thus practically be given self-stabilization.
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    Due to the convex or concave curvature of the surface element, at least one space is created between the surface element and the single-layer or multilayer film. According to a further embodiment variant of the rechargeable battery, it can be provided that a foam element or a potting resin element is arranged in this at least one intermediate space. With this, the function of the stiffening element can be further improved by additionally supporting the film via this foam element. In addition, thermal insulation of the cooling device can also be achieved with the foam element. The foam element can have an insulating effect. This effect is particularly important for temperature control tasks of the cooling device or at low temperatures in winter.
    According to one embodiment variant of the rechargeable battery, it can preferably be provided that the concave or convex curved surface element and / or the single-layer or multilayer film is connected to the foam element or the sealing resin element, in particular is directly connected. Through this connection of the foam element with the surface element and / or the film, the overall strength of the cooling device can be improved, which in turn enables lower wall thicknesses of the stiffening element and thus a lower weight of the cooling device. By avoiding intermediate elements or additional adhesives, weight can also be saved or labor can be reduced.
    According to a further embodiment variant of the accumulator, it can be provided that the stiffening element is provided with a tension element. By means of this tension element, the curvature of the reinforcing element can be maintained better and longer, even in the event of frequent changes in temperature. The wall thickness of the stiffening element can thus also be reduced, as a result of which it can be brought into the curved state with little effort.
    To increase the efficiency of the cooling of the accumulator, it can be provided that the single-layer or multilayer film forms a plurality of cooling channels, liquid-tight seams being formed between the cooling channels.
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    According to one embodiment variant, it can be provided that the liquid-tight seams are provided with at least one seam support element, as a result of which the seams are also better protected from damage due to
    Pressure fluctuations can be protected.
    According to a further embodiment variant of the rechargeable battery, it can preferably be provided that the seam support element is formed by the at least one foam element or the sealing resin element, which for this purpose rests on the liquid-tight seams. The stiffening element can thus perform both functions, as a result of which the structure of the cooling device can be simplified and thus can be designed with a relatively low weight.
    To further improve the protection of the seams against damage due to pressure changes, it can be provided that the liquid-tight seams are provided on both sides with seam support elements.
    According to another embodiment variant of the accumulator, it can also be provided to support the seams that the at least one seam support element is formed by a surface element in which beads are formed at the locations of the liquid-tight seams and / or in the stiffening ribs.
    For higher loads, it can also be provided that the at least one stiffening element is formed by a surface element on which at least one stiffening rib is formed.
    The cooling device has at least one coolant inlet and at least one coolant outlet, it being possible, according to a further embodiment variant of the accumulator, for the coolant inlet and the coolant outlet to be arranged in a one-piece molding.
    For better protection against the formation of leaks due to pressure changes, it can be provided that a / 41
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    Sealing element for sealingly connecting the shaped piece to the single-layer or multilayer film is integrated. The number of sealing points can thus be reduced.
    According to another embodiment variant of the accumulator, it can be provided that the pressure element is formed by a pressure valve. The resulting overpressure can be released repeatedly.
    For a single overpressure protection, according to a further embodiment variant of the accumulator, it can also be provided that the single-layer or multilayer film forms a plurality of cooling channels, liquid-tight seams being formed between the cooling channels, and at least one of these seams forming a predetermined breaking seam to form the overpressure element.
    The overpressure element is preferably connected to an overpressure container, so that direct contact of the cooling liquid with electrical components of a vehicle equipped with the accumulator can be avoided.
    To minimize weight, the pressure container can be a foil bag according to one embodiment variant of the accumulator, it being possible according to a further embodiment variant that the foil bag is formed by the single-layer or multi-layer foil of the cooling device, in particular is formed in one piece with the foil with which the cooling channels are formed. It can, among other things, the compactness of the cooling device can be improved.
    For a better understanding of the invention, this will be explained in more detail with reference to the following figures.
    Each shows in a simplified, schematic representation:
    1 shows an accumulator in an oblique view with a cooling device.
    FIG. 2 shows the accumulator according to FIG. 1 in an oblique view without a cooling device;
    3 shows a detail from the cooling device;
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    4 shows a variant of the accumulator;
    5 shows a further embodiment variant of the accumulator;
    6 shows another embodiment variant of the accumulator;
    7 shows a variant of the accumulator;
    8 shows a further embodiment variant of the accumulator;
    9 shows a detail of another embodiment variant of the accumulator in an oblique view from the front;
    FIG. 10 shows the detail of the variant of the accumulator according to FIG. 10 in an oblique view from the rear;
    11 shows a detail of a further embodiment variant of the accumulator in an oblique view;
    12 shows a detail of another embodiment variant of the accumulator.
    In the introduction, it should be noted that in the differently described embodiments, the same parts are provided with the same reference numerals or the same component names, and the disclosures contained in the entire description can be applied analogously to the same parts with the same reference numbers or the same component names. The location information selected in the description, e.g. above, below, to the side, etc., referring to the figure described and illustrated immediately, and if the position is changed, these are to be applied to the new position.
    1 and 2 an accumulator 1, i.e. a rechargeable battery, shown in an oblique view, FIG. 1 shows the accumulator 1 with a cooling device 2 and FIG. 2 shows the accumulator 1 without this cooling device 2.
    The accumulator 1 comprises at least one cell 3, preferably a plurality of cells 3, for electrical energy. In the example shown there are 27 cells 3. However, this number is not to be understood as limiting.
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    The cells 3 can be cuboid, cube-shaped, cylindrical, etc.
    Since the basic structure of such accumulators 1 for e-mobility is known from the relevant prior art, reference should be made to avoid repetition.
    As can be seen from the comparison of the two FIGS. 1 and 2, the cooling device 2 is arranged on one side of the accumulator 1, in particular at the top. However, it can also be provided that the cooling device 2 extends over at least two surfaces of the rechargeable battery 1, for example above and to the side and optionally below. Alternatively or additionally, the cooling device 2 can also be arranged between the cells 3 or below the cells 3.
    It is preferred if the cooling device 2 extends over all cells 3 so that all cells 3 can be cooled with only one cooling device 2. In principle, however, it is also possible to provide a plurality of cooling devices 2 in the accumulator 1, for example two or three or four, so that, for example, the cells 3 are divided into two or three or four, etc. cooling devices 2.
    It should be pointed out that the terms top side, etc., refer to the installation position of the accumulator 1.
    It should also be pointed out that the cells 3 can have a modular design, so that they can also be referred to as memory modules.
    In all of the design variants, the cooling device 2 comprises or consists of a single-layer or multilayer film 4, as can be seen in FIG. 3. With this film 4, the cooling device 2 lies against the cells 3, in particular directly. Since the film 4 is flexible, ie is not stiff, this film 4 can adapt better to unevenness in the cells 3 or between the cells 3. A balancing mass between the cooling device 2 and the cells 3 is not necessary.
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    The cooling device 2 can have the one or more layers of film 4 on one or both sides.
    Furthermore, the cooling device 2 comprises at least one coolant channel 5, which extends from at least one inlet to at least one outlet. The at least one coolant channel 2 is formed within the single or multilayer film 4 or between two single or multilayer films 4 or between this film 4 and the metal layer by only partially connecting the film (s) 4 or the film to the metal layer. For example, the at least one coolant channel 5 can be produced by gluing or shitting the foils (s) 4 to form webs 6. The at least one coolant channel 5 is formed in the non-connected areas of the film (s) 4 next to the webs 6. Other suitable connection techniques can also be used to connect the film (s) 4 or the film 4 to the metal layer. In general, the connection techniques are preferably selected in such a way that no additional measures have to be taken in order to obtain a liquid-tight design of the connection.
    The coolant channel 5 can be arranged in a meandering shape in the cooling device 2. The optimized course of the at least one coolant channel 5 is directed among other things. according to the amount of heat to be dissipated, the geometry of the accumulator 1, etc. It can also be provided that more than one coolant channel 5 is formed or arranged in the cooling device 2. In this case, it is advantageous if a common inlet and then a common outlet are arranged in front of the plurality of coolant channels 5, each of which can be designed as a collecting channel from which the coolant channels branch or into which they open. However, there is also the possibility that each coolant channel 5 has its own inlet 6 and / or its own outlet 7.
    A liquid, for example a water-glycol mixture, is used in particular as the coolant through which the cooling device 2 flows.
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    The cooling device 2 according to FIG. 3 comprises the film 4 and a further single or multi-layer film 7. The film 4 and the further film 9 are in connection areas 8 with the formation of the at least one coolant channel 5 between the film 4 and the further film 9 connected. The connection areas 8 can extend along the longitudinal extent of the at least one coolant channel 5, areas which are not connected remaining between the connection areas 8, in which the at least one coolant channel 5 is formed by the spacing of the film 4 from the further film 9. The film 4 and the further film 9 extend over an area which preferably corresponds at least approximately, in particular 100%, to the area of the cooling device 2 (viewed in plan view).
    The film 4 and the further film 9 can consist of a laminate which has a first plastic film 10, 11, a reinforcing layer 12, 13 connected thereto, a metal film 14 or 15 connected to the reinforcing layer 12 or 13 or a metallized further plastic film , However, it should be pointed out that in particular the film 4 lying against the cells 3 can also be formed in one layer from the plastic film 10.
    In principle, other laminates can also be used. For example, only the foil 4 can be provided with the metal foil 13 or only the further foil 9 with the metal foil 15. Likewise, only the film 4 can have the reinforcement layer 12 or only the further film 9 can have the reinforcement layer 13. Likewise, more than three-layer structures of the film 4 and / or the further film 9 are possible. However, the film 4 and the further film 9 are preferably of the same design.
    The at least one coolant channel 5 is formed by the only partial connection of the film 4 to the further films 10. The wall or the walls of the at least one coolant channel 5 are thus formed by the film 4 and the further film 10, preferably half each.
    The first plastic films 10, 11 and / or the metallized further plastic film preferably consists of at least 80% by weight, in particular at least 90% by weight, of a thermoplastic or an elastomer. The / 41
    N2018 / 13200-AT-00 thermoplastic can be selected from a group comprising or consisting of polyethylene (PE), polyoxymethylene (POM), polyamide (PA), in particular PA 6, PA 66, PA 11, PA 12, PA 610 , PA 612, polyphenylene sulfide (PPS), polyethylene terephthalate (PET), cross-linked polyolefins, preferably polypropylene (PP). The elastomer can be selected from a group comprising or consisting of thermoplastic elastomers such as e.g. thermoplastic vulcanizates, olefin, amine, ester-based, thermoplastic polyurethanes, in particular thermoplastic elastomers based on ether / ester, styrene block copolymers, silicone elastomers.
    It should be mentioned at this point that a plastic is understood to mean a synthetic or natural polymer which is produced from corresponding monomers.
    The first plastic film 10, 11 and / or the metallized further plastic film preferably consists of a so-called sealing film. This has the advantage that the respective foils can be connected directly to one another.
    But it is also possible to use other plastics, e.g. to use thermosetting plastics or thermosetting materials which are then glued together, for example with an adhesive. Two-component adhesive systems based on polyurethane or silicone or hot glue systems are particularly suitable for this purpose.
    The reinforcement layer (s) 12, 13 preferably comprise or consist of a fiber reinforcement, which is preferably designed as a separate layer. The fiber reinforcement can be formed from fibers and / or threads which are selected from a group comprising or consisting of glass fibers, aramid fibers, carbon fibers, mineral fibers, such as, for example, basalt fibers, natural fibers, such as e.g. Hemp, sisal, and combinations thereof.
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    The proportion of fibers, in particular glass fibers, in the fiber reinforcement can be at least 80% by weight, in particular at least 90% by weight. The fibers and / or threads of the fiber reinforcement preferably consist exclusively of glass fibers.
    The fibers and / or threads can be present in the fiber reinforcement as a scrim, for example as a fleece, as a knitted fabric, as a fabric, etc.
    The metal foil 14, 15 is in particular an aluminum foil. However, other metals can also be used, such as copper or silver.
    The metal foil 14, 15 can have a layer thickness between 5 μm and 100 μm. The plastic films 10, 11 can have a layer thickness between 10 μm and 200 μm. The layer thickness of the reinforcement layer (s) 12, 13 can be between 5 μm and 50 μm.
    The above statements on the accumulator 1 according to FIGS. 1 to 3 can be applied to all the embodiment variants of the accumulator 1 described below.
    4 to 12 show, if necessary, independent design variants of the accumulator 1 or details thereof. Again, the same reference numerals or component names as in FIGS. 1 to 3 are used for the same parts. In order to avoid unnecessary repetitions, reference is made to the detailed description of FIGS. 1 to 3. Furthermore, the explanations for all other variants shown in the remaining figures and described in this description can also apply to the variant of the accumulator 1 shown in a specific figure.
    It should be pointed out that components of the rechargeable battery 1 have been partially stylized in FIGS. 4 to 12 if they are not necessary for understanding the invention or the respective embodiment variant of the rechargeable battery 1.
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    The battery 1 according to FIG. 4 again has the at least one storage module for electrical energy with at least one cell 3 and at least one cooling device 2. As described above, the cooling device 2 can have a single-layer or multi-layer film 4, 9 and, with this film 4, 9, bear against the at least one memory module, in particular bear directly against it, as can be seen from FIG. 4.
    The at least one memory module can be flanked laterally by holding elements 16. These holding elements 16 can, for example, be arranged on supporting elements 17, for example supporting plates made of metal or supporting elements 17 made of plastic, on which they stand. The support elements 17 are preferably dome-shaped or cap-shaped, so that between a cover 18 or a base plate, e.g. an accumulator receptacle, or a footprint of the accumulator 1, an intermediate space is formed.
    The cooling device 2 is provided with or has at least one stiffening element 19. With the stiffening element 19, deformations of the cooling device 2 due to the pressure of the coolant present therein can be reduced.
    In the embodiment variant of the accumulator 1 according to FIG. 4, the stiffening element 19 is designed as a surface element, wherein the accumulator can have one or more such surface elements. The surface element can for example be a metal sheet, e.g. made of aluminum or steel. However, the surface element can also consist of a polymeric plastic or comprise it.
    As can be seen from the illustration in FIG. 4, the at least one stiffening element 19 is convexly curved in this embodiment variant of the accumulator 1. As a result, the stiffening element 19 is partially spaced from the film 4 or 9, forming an intermediate space 20.
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    The stiffening element 19 rests on the support elements 17 and is in particular arranged between the support elements 17 and the holding elements 16. The stiffening element 19 can be connected to the support elements 17 and / or the holding elements 16, for example be positively and / or materially and / or non-positively connected. For example, the stiffening element 19 can be welded to the support elements 17 and / or the holding elements 16.
    The stiffening element 19 can, however, also be arranged at another location, provided that it can fulfill its effect to support the cooling device 2, in particular the film 4 or 9, if necessary.
    The deformation of the stiffening element 19 can be up to 15 mm, in particular between 1 mm and 10 mm, from the plane. This means that a greatest distance 21 from the point with the highest deflection (based on a completely flat element without curvature) is a maximum of 15 mm, in particular between 1 mm and 10 mm.
    FIG. 5 shows an embodiment variant of the accumulator 1, which essentially corresponds to that according to FIG. 4 (so that the explanations relating to FIG. 4 can also largely apply here) with the difference that the stiffening element 19 is concavely curved. The concave curvature of the stiffening element 19, as an alternative or in addition to the side regions of the cooling device 2, also supports the central region of the cooling device 2. This support can be designed in such a way that the stiffening element 19 lies directly against the film 4 or 9 of the cooling device 2 in this central region, as can be seen from FIG. 5.
    In order to achieve the concave curvature of the stiffening element 19, this can initially be convexly curved in side sections, as is also the case with the stiffening element 19 according to FIG. 4, in order to then subsequently transition to the concave curved central region, as is shown in FIG. 5 , The stiffening element 19 can extend over a larger area / 41
    N2018 / 13200-AT-00 bear against the lateral support elements 17, compared to the embodiment variant of the accumulator 1 according to FIG. 4, in order to enable a larger concave curvature.
    For the sake of completeness, it should be mentioned that, in the case of the convex design of the stiffening element 19 according to FIG. 4, it can only bear against the film 4 or 9 of the cooling device 2 in the side regions.
    In addition to the described difference between the design variants of the accumulator 1 according to FIGS. 4 and 5, there may be a further difference. Namely, if the stiffening element 19 directly, i.e. bears directly on the film 4 or 9 of the cooling device 2, then more than one space 20 is formed between the film 4 or 9 and the stiffening element 19.
    It should also be mentioned that only a central region with a concave curvature of the stiffening element 19 is shown in FIG. 5. However, there is also the possibility that the central region can have a plurality of concavely curved regions next to one another, for example two or three, so that in this case the stiffening element 19 can (directly) rest on the film 4 or 9 in several regions, for example two or three , as shown in dashed lines in Fig. 5.
    4, a plurality of convex areas can also be formed next to one another in this case, in which case the stiffening element 19 can optionally also (directly) rest against the film 4 or 9 in a central area of the stiffening element 19. In this case, the embodiment variant of the accumulator 1 according to FIG. 4 can also have a plurality of intermediate spaces 20 between the stiffening element 19 and the film 4 or 9 of the cooling device 2.
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    The stiffening element 19 can, however, also be designed as a mixed variant of the designs shown in FIGS. 4 and 5, so that the stiffening element 19 can have both concavely curved and convexly curved regions.
    4 and 5, the stiffening element 19 has been described as a separate component of the accumulator 1. However, according to one embodiment variant of the accumulator 1, there is also the possibility of integrating the stiffening element 19 into an accumulator cover 22 (FIG. 1) or at least partially forming it, so that the accumulator cover 22 can thus be part of the cooling device 2. The battery cover 22 can thus be concave or convex.
    As already stated above, at least one intermediate space 20 (FIGS. 4 and 5) can be formed between the stiffening element 19 and the film 4 or 9 of the cooling device 2. In principle, this at least one intermediate space 20 can be empty. According to another embodiment variant of the accumulator 1, it can be provided that a foam element 22 is arranged in at least one, in particular in all, of these intermediate spaces 20, as can also be seen from FIGS. 4 and 5, which also show this embodiment variant. For example, a polyurethane foam or a polyethylene foam can be used as the foam. In general, a foam made of an organic or a natural polymer can be used. The production of these foams is known per se, so that further explanations are unnecessary.
    The at least one foam element 22 can be placed on the film 4 or 9 of the cooling device 2 in a fully foamed form before the stiffening element 19 is arranged. However, it can also be inserted into the at least one intermediate space 20 after the stiffening element 19 has been arranged. If necessary, the foam element 22 can be glued to the stiffening element 19 and / or the film 4 or 9 of the cooling device 2 by means of an adhesive, so that the concave and / or convex curved / 41
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    Flat element and / or the single or multilayer film 4 or 9 with the
    Foam element 22 is connected.
    According to a variant of the accumulator 1 there is also the possibility that the at least one intermediate space 20 between the stiffening element 19 and the film 4 or 9 of the cooling device 2 is foamed, that is to say the foam element 22 is produced on site. It is thus possible to directly direct the foam element 22, i.e. to connect directly to the concave and / or convex curved surface element, that is to say the stiffening element 19, and / or the single-layer or multilayer film 4 or 9 to the foam element 22. The foamable mass for producing the foam element 22 can be introduced into the at least one intermediate space 20 and then foamed.
    Instead of the foam element 22, a sealing resin element made of a sealing resin can also be used. Concerning. The effects achieved in this way are referred to the above explanations regarding the foam element 22.
    A known casting resin, for example a polyester resin, an epoxy resin, a silicone resin, a vinyl ester resin, a phenolic resin, an acrylic resin, etc., can be used as the casting resin.
    The potting resin element and the foam element 22 can also be combined with one another in the at least one intermediate space 20. For example, the potting resin element can be installed directly against the film 4 or 9, at least in regions, and the foam element 22 can be installed directly against the potting resin element.
    A further, possibly independent, variant of the accumulator 1 is shown in FIG. 5. In this, the stiffening element 19 is provided with at least one tension element 23. Only a single tension element 23 can be provided. However, a plurality of tension elements 23, for example two or three or four, etc., can also be arranged in the accumulator 1.
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    The at least one tension element 23 can also be a surface element, for example a strip. However, other embodiments are also possible.
    For example, the tension element 23 can be a rope or a fabric.
    The at least one tension element 23 can consist of a metal, for example a metal sheet or a wire rope, or can comprise these. For example, the tension element 23 can consist of a steel. However, other materials can also be used, for example carbon fabric, etc.
    With the at least one tension element 23, the concave curvature of the stiffening element 19 can be produced and / or maintained. For this purpose, the at least one tension element 23 can be connected to the stiffening element 19, for example cohesively, e.g. by welding, and / or positively and / or non-positively. For the positive connection, for example, the stiffening element 19 can have at least one recess into or through which the tension element 23 extends. Other form-fitting designs are also possible.
    The at least one tension element 23 can also rest on the support elements 17 and, if appropriate, be connected to these in accordance with the above statements. In particular, the at least one tension element 23 can be arranged between the stiffening element 19 and the support elements 17, as can be seen from FIG. 5.
    Although the at least one tension element 23 is preferably arranged on the side of the stiffening element 19 facing away from the film 4 or 9, this can also be arranged, for example also foamed, on the side of the stiffening element 19 facing the film 4 or 9.
    As already explained above, the single-layer or multilayer film 4 and / or 9 forms at least one coolant channel 5, which is arranged in particular in a meandering manner. However, a plurality of coolant channels 5 are preferably provided. To form the at least one coolant channel 5, the single-layer or multilayer film 4 and / or 9 is / are partially connected to one another, / 41
    N2018 / 13200-AT-00 whereby the coolant channels 5 are formed between the two film layers in the areas of the single-layer or multilayer film 4 and / or 9 which are not connected to one another. The connection areas can be produced, for example, by gluing. However, they are preferably produced by film welding. In any case, liquid-tight seams 24 are formed in the connected areas, as can be seen from FIGS. 4 and 5.
    According to a further embodiment variant of the accumulator 1, there is now the possibility of better protecting these seams 24 from breakage by providing them with at least one seam support element 25 or arranging them on the seams 24.
    The at least one seam support element 25 can be formed, for example, by foam element 22 or the sealing resin element, which for this purpose can be arranged in contact with the liquid-tight seams 24. For this purpose, the foam element 22 or the potting resin element can be formed with elevations in the area of the seams 24, as is shown in FIGS. 4 and 5.
    It should be mentioned at this point that the foam element 22 can also be completely flat on the surface facing the film 4 or 9 of the cooling device 2, that is to say it cannot be arranged adjacent to the seams 24 in the accumulator 1.
    It should also be mentioned that the trapezoidal cross section of the elevations of the foam element 22 in the area of the seams 24 is idealized. The reality can deviate from this cross-sectional shape after the coolant channels are formed by the single-layer or multilayer film 4 and / or 9.
    The at least one foam element 22 or the potting resin element preferably abuts at least approximately the entire, in particular the entire, surface of the seams 24 which faces the foam element 22. However, only partial contact of the at least one foam element 22 or the sealing resin element at the seams 24 is possible, i.e. that only a / 41
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    Part of said surface is supported directly by the foam element 22.
    As can be seen in the embodiment variants of the accumulator 1 according to FIGS. 4 and 5, the seam support element 25 or the seam support elements 25 can be arranged on one side only on the seam 24 or the seams 24. According to a further variant of the accumulator 1, there is also the possibility that the seam support element 25 or the seam support elements 25 is or are arranged on both sides of the seam 24 or the seams 24 of the cooling device 2, as shown in FIG. 6. The concrete representation with the convexly curved stiffening element 19 has no restrictive character here. A concave stiffening element 19, as can be seen in FIG. 5, can also be used in the embodiment variant of the accumulator 1 according to FIG. 6.
    6 shows yet another embodiment variant of the accumulator 1. The seam support elements 25 can namely generally be provided as separate components, that is to say also on the side of the single-layer or multilayer film 4 or 9 of the cooling device 2 facing the foam element 22 or the sealing resin element Seam support elements 25 can be made of at least one metal, for example consist of aluminum or a steel, or a composite material, for example a resin-bonded fiber material, or of paper or cardboard or of cardboard, or of a plastic.
    FIG. 7 shows another embodiment variant of the accumulator 1 with seam support elements 25. The stiffening element 19 is again designed as a surface element, but without the concave or convex curvature described above. In this surface element 24 beads 26 are formed at the locations of the liquid-tight seams, which form the seam support elements 25, which bear (directly) on the seams 24. In addition, for further details of this embodiment variant, reference is also made to the description of the further embodiment variants, as has already been stated in the introduction.
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    7 shows a variant of the accumulator 1 in which the at least one stiffening element 19 is formed by a surface element on which stiffening ribs are formed. The stiffening ribs 27 are arranged in particular on the side facing away from the single-layer or multilayer film 4 or 9. The stiffening ribs 27 can have any suitable shape. Furthermore, the stiffening ribs 27 can be provided in any suitable arrangement, for example as simple strips, or in the form of a square or hexagonal grid, etc.
    Although no seam support element 25 is shown in FIG. 8, stiffening ribs of this type can also be provided in addition to the beads 26, for example in the embodiment variant of the accumulator 1 according to FIG. 6 with the beads 26.
    9 and 10 show a detail of a further embodiment variant of the accumulator 1 (FIG. 1).
    As already explained above, the cooling device 2 has at least one inlet and at least one outlet for the coolant. According to the embodiment variant shown in FIGS. 9 and 10, it can now be provided that a coolant inlet 28 and a coolant outlet 29 are arranged or formed in a common, one-piece shaped piece 30 (in a fitting). The coolant inlet 28 preferably opens out and the coolant outlet 29 preferably extends from corresponding coolant channel connections 31, 32 of the shaped piece 30, as can be seen from FIG. 10.
    According to an embodiment variant of the accumulator 1, it can be provided that at least one sealing element 33 for sealingly connecting the shaped part 30 to the single- or multilayer film 4 or 9 is integrated in the shaped part 30.
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    N2018 / 13200 AT-00
    The shaped piece 30 is preferably connected to the single-layer or multilayer film 4 or 9 by welding. The shaped piece 30 therefore consists at least partially, in particular entirely, preferably of one or more plastics).
    FIG. 11 shows a detail of a further, possibly independent, embodiment variant of the accumulator 1 (FIG. 1).
    In this embodiment variant, the accumulator 1 again, as described above, has at least one storage module for electrical energy and at least one cooling device 2 for cooling or temperature control for the at least one storage module, the cooling device 2 having a single-layer or multilayer film 4 and with this Foil 4 on which at least one memory module 3 rests. Please refer to the above explanations.
    In this embodiment variant of the accumulator 1, the cooling device 2 has at least one overpressure element 34. The at least one overpressure element is integrated in the coolant circuit and has at least one inlet and at least one outlet 36.
    In particular, the overpressure element 34 can be designed as an overpressure valve.
    It can further be provided according to one embodiment variant of the accumulator 1 that the overpressure element 34 is combined with the above-described shaped piece 30 for the coolant inlet 28 and the coolant outlet 29, in particular is formed in one piece with the shaped piece 30.
    According to a further embodiment variant of the accumulator 1, which is shown in FIG. 12, it can be provided that the single-layer or multilayer film 4 and / or 9 forms a plurality of coolant channels 5, and the liquid-tight seams 24 are formed between the coolant channels 5 ( as already stated above), at least one of these seams 24 forming a predetermined breaking seam 37 to form the overpressure element 34. The predetermined breaking seam can also cover only a partial area of the total length of the respective seam / 41
    N2018 / 13200-AT-00 extend, as can be seen from Fig. 12. For this purpose, the predetermined breaking seam 37 has a lower seam strength than the remaining seams 24 of the single-layer or multilayer film 4 and / or 5 of the cooling device 2.
    In principle, it can be provided that the excess pressure (and the coolant escaping therewith) is released into the environment. However, according to a further embodiment variant of the accumulator 1, the overpressure element 34 can preferably be connected to an overpressure container 38, as shown in FIG. 11.
    According to one embodiment variant of the accumulator 1, the overpressure container 38 can be formed by a foil bag. In particular, the film bag is formed from the single-layer or multilayer film (s) 4 and / or 9 of the cooling device 2 described above.
    According to an embodiment variant, it can be provided that the film bag is formed by an expansion area 39 in the cooling device 2. For this purpose, the cooling device 2 formed from the single-layer or multilayer film 4 and / or 9 can have a further seam 24 which surrounds and thus forms this expansion area 39, as is shown in FIG. 12. Overpressure in the coolant channel 5 adjoining the predetermined breaking seam 37 is then released in the event of an excess pressure after the predetermined breaking seam 37 has broken in this expansion region 39 without reaching the environment.
    The exemplary embodiments show or describe possible design variants of the accumulator 1, it being noted at this point that various combinations of the individual design variants with one another are also possible.
    For the sake of order, it should finally be pointed out that, for a better understanding of the structure of the accumulator 1, the latter or its elements are not necessarily shown to scale.
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    N2018 / 13200 AT-00
    LIST OF REFERENCE NUMBERS
    1 accumulator 30 fitting 2 cooler 31 Coolant channel connection 3 cell 32 Coolant channel connection 4 foil 33 sealing element 5 Coolant channel 34 Overpressure element 6 web 35 inlet 7 foil 36 outlet 8th connecting area 37 Breaking seam 9 foil 38 Pressure vessels 10 Plastic film 39 expansion region 11 Plastic film 12 reinforcing layer 13 reinforcing layer 14 metal foil 15 metal foil 16 holding member 17 supporting 18 cover 19 stiffener 20 gap 21 distance 21a Akkumulatordeckel 22 foam element 23 tension element 24 seam 25 Wound support element 26 Beading 27 stiffening rib 28 Coolant inlet 29 coolant outlet
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    权利要求:
    Claims (20)
    [1]
    claims
    1. Accumulator (1) with at least one storage module for electrical energy and at least one cooling device (2) for cooling or temperature control for the at least one storage module, the cooling device (2) having a single-layer or multilayer film (4, 9) and with of this film (4, 9) on the at least one storage module, characterized in that the cooling device is provided with at least one stiffening element (19).
    [2]
    2. Accumulator (1) according to claim 1, characterized in that the stiffening element (19) is at least one concave and / or convex curved surface element.
    [3]
    3. Accumulator (1) according to claim 2, characterized in that the concave or convex curved surface element is integrated in an accumulator cover (21a) or at least partially forms it.
    [4]
    4. Accumulator (1) according to one of claims 1 to 3, characterized in that between the stiffening element (19), in particular the concave or convex curved surface element, and the single-layer or multilayer film (4, 9) at least one intermediate space (20) is formed, and that in this at least one space (20) a foam element (22) or a potting resin element is arranged.
    [5]
    5. Accumulator (1) according to claim 4, characterized in that the concave or convex curved surface element and / or the single or multilayer film (4, 9) is connected to the foam element (22) or the sealing resin element, in particular is directly connected ,
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    [6]
    6. accumulator (1) according to one of claims 1 to 5, characterized in that the stiffening element (19) is provided with a tension element (23).
    [7]
    7. Accumulator (1) according to one of claims 1 to 6, characterized in that the single-layer or multilayer film (4, 9) forms a plurality of coolant channels (5), liquid-tight seams (24) being formed between the coolant channels (5) ,
    [8]
    8. accumulator (1) according to claim 6, characterized in that the liquid-tight seams (24) are provided with at least one seam support element (25).
    [9]
    9. Accumulator (1) according to claim 8, characterized in that the seam support element (25) is formed by the at least one foam element (22) or the potting resin element, which lies against the liquid-tight seams (24).
    [10]
    10. Accumulator (1) according to claim 8, characterized in that the liquid-tight seams (24) are provided on both sides with seam support elements (25).
    [11]
    11. Accumulator (1) according to claim 8, characterized in that the at least one seam support element (25) is formed by a surface element in which beads (26) and / or on the stiffening ribs (27) at the locations of the liquid-tight seams (24) ) are trained.
    [12]
    12. Accumulator (1) according to one of claims 1 to 11, characterized in that the at least one stiffening element (19) is formed by a surface element on which at least one stiffening rib (27) is formed.
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    N2018 / 13200 AT-00
    [13]
    13. Accumulator (1) according to one of claims 1 to 12, characterized in that the cooling device (2) has at least one coolant inlet (28) and at least one coolant outlet (29), the coolant inlet (28) and the coolant outlet (29) are arranged in a one-piece molding (30).
    [14]
    14. Accumulator (1) according to claim 13, characterized in that in the shaped piece (30) a sealing element (33) for sealingly connecting the shaped piece (30) with the single- or multi-layer film (4, 9) is integrated.
    [15]
    15. Accumulator (1) with at least one storage module for electrical energy and at least one cooling device (2) for cooling or temperature control for the at least one storage module, the cooling device (2) having a single-layer or multilayer film (4, 9) and with This film (4, 9) bears against the at least one memory module, in particular according to one of claims 1 to 14, characterized in that the cooling device (2) is provided with at least one overpressure element (34).
    [16]
    16. Accumulator (1) according to claim 15, characterized in that the pressure element (34) is formed by a pressure valve.
    [17]
    17. The accumulator (1) according to claim 15 or 16, characterized in that the single-layer or multilayer film (4, 9) forms a plurality of coolant channels (5), liquid-tight seams (24) being formed between the coolant channels (5), and that at least one of these seams (24) forms a predetermined breaking seam (37) to form the overpressure element (34).
    [18]
    18. Accumulator (1) according to one of claims 15 to 17, characterized in that the overpressure element (34) is connected to an overpressure container (38).
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    N2018 / 13200 AT-00
    [19]
    19. Accumulator (1) according to claim 18, characterized in that the overpressure container (38) is formed by a foil bag.
    [20]
    20. Accumulator (1) according to claim 19, characterized in that the film bag is formed by the single- or multilayer film of the cooling device (2), in particular is formed in one piece with the film (4, 9) with which the cooling channels (5 ) are formed.
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    同族专利:
    公开号 | 公开日
    WO2019237139A2|2019-12-19|
    US20210234212A1|2021-07-29|
    AT521296B1|2020-02-15|
    CN112262495A|2021-01-22|
    DE112019002963A5|2021-02-25|
    WO2019237139A3|2020-02-27|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    DE102011084000A1|2010-11-30|2012-05-31|Behr Gmbh & Co. Kg|Apparatus for guiding a cooling fluid and cooling system for cooling an electrical component|
    GB2549512A|2016-04-20|2017-10-25|Delta Motorsport Ltd|Cell pack thermal management apparatus and method|
    CN107331915A|2017-05-31|2017-11-07|天津市捷威动力工业有限公司|A kind of cold bag of liquid cooling system and its liquid|
    KR101661972B1|2015-02-17|2016-10-04|엘지전자 주식회사|Battery Pack for Elecetronic Vehicles|JP2020181632A|2019-04-23|2020-11-05|トヨタ自動車株式会社|Power storage device|
    法律状态:
    2020-11-15| PC| Change of the owner|Owner name: AUDI AKTIENGESELLSCHAFT, DE Effective date: 20201002 Owner name: MIBA EMOBILITY GMBH, AT Effective date: 20201002 |
    优先权:
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    ATA50475/2018A|AT521296B1|2018-06-12|2018-06-12|accumulator|ATA50475/2018A| AT521296B1|2018-06-12|2018-06-12|accumulator|
    DE112019002963.0T| DE112019002963A5|2018-06-12|2019-06-07|accumulator|
    PCT/AT2019/060191| WO2019237139A2|2018-06-12|2019-06-07|Rechargeable battery|
    CN201980038558.XA| CN112262495A|2018-06-12|2019-06-07|Electric storage device|
    US15/733,952| US20210234212A1|2018-06-12|2019-06-07|Rechargeable battery|
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