• 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) having a plurality of cylindrical cells (2) for storing electrical energy and at least one cooling device (4) for cooling or heating the cells (2), wherein the cooling device (4) has at least one coolant channel (5 ), at least one coolant inlet (6) and at least one coolant outlet (7), and at least one single- or multi-layered film (8), which is arranged at least partially between the cells (2).
    公开号:AT520409A1
    申请号:T50745/2017
    申请日:2017-09-05
    公开日:2019-03-15
    发明作者:Ing Stefan Gaigg Dipl；Dipl Ing Hintringer Roland
    申请人:Miba Ag；
    IPC主号:
    专利说明:

    Summary
    The invention relates to an accumulator (1) with a plurality of cylindrical cells (2) for storing electrical energy and at least one cooling device (4) for cooling or tempering the cells (2), the cooling device (4) having at least one coolant channel (5), Has at least one coolant inlet (6) and at least one coolant outlet (7), and at least one or more layers of film (8), which is at least partially arranged between the cells (2).
    Fig. 6/46
    N2017 / 21900 AT-00
    The invention relates to an accumulator with a plurality of cylindrical cells for storing electrical energy and at least one cooling device for cooling or tempering the cells, the cooling device having at least one coolant channel, at least one coolant inlet and at least one coolant outlet.
    The lifespan and effectiveness as well as the safety of a rechargeable battery, i.e. of an accumulator, 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 just a cell.
    The problem of cooling individual cells if they are cylindrical. However, the cylindrical cell is the most widespread cell shape because it is easy to produce, is mechanically very stable and has the greatest energy density compared to other shapes. A standard is the 18650 cell, which measures 18 mm in diameter and 65 mm in height. The cell chemistry in this cell is integrated in a stable round housing. However, due to its shape, it has poor heat dissipation.
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    The present invention has for its object a structurally simple
    To provide cooling or temperature control for batteries with cylindrical cells.
    The object of the invention is achieved in the above-mentioned accumulator in that the cooling device has a single-layer or multilayer film which is at least partially arranged between the cells.
    The advantage here is that the flexibility of the film means that the space between the cells of a cell module with several cells can be used better or more easily for cooling or tempering the cells. The film can be applied to the cells over the whole area without having to take any further measures (such as the application of leveling compounds), as a result of which the heat transfer into and out of the cells can be made more efficient. In addition, the film can also be used to reduce weight, as a result of which the effectiveness of the energy supply, for example for e-mobility, can be improved by longer working time of the battery, and thus, for example, longer ranges of an electric vehicle.
    If in the following only the term "cooling" is used for simplification, the term "temperature control" should also be read. The term “cooling” in the sense of the invention also means the temperature control of the accumulator.
    According to an embodiment variant of the accumulator, it can be provided that the cooling device has a self-supporting housing, in which recesses are arranged, in which the cells are arranged, single-layer or multilayer films between two mutually opposite recesses, and in particular between the housing and the Cells, arranged and connected to the housing. The cooling device can thus be given improved stability, so that additional holders for the cells can be dispensed with. In addition, this can lead to further improvements / 46
    N2017 / 21900-AT-00 tion of the cooling of the accumulator can be achieved if the housing is at least partially made of a metal, since part of the heat can be removed via the metal by heat conduction.
    According to an embodiment variant, it can be provided that the recesses in the housing have a larger diameter than the outer diameter of the cells, so that the foils are at least partially at least approximately conical. This conical shape simplifies the insertion of the cells into the cooling device, as a result of which the mechanical production of the rechargeable battery can be improved.
    According to another embodiment variant, it can be provided that the cooling device has a further single-layer or multilayer film, the film and the further film being connected to one another to form the at least one coolant channel between the film and the further film. The advantage here is that the cooling device is simply constructed from two interconnected film materials or consists of these. An additional arrangement or an additional installation of the coolant channel can be omitted, since this is created automatically by the partial connection of the two film materials. The production of the cooling device can be largely automated, with very few restrictions regarding the geometry of the cooling device and the specific design of the at least one coolant channel.
    According to a further embodiment variant, the film can consist of a laminate which has a first plastic film, a reinforcement layer connected to it, a metal film connected to the reinforcement layer or a metallized further plastic film connected to the reinforcement layer. The reinforcement layer enables improved stiffness and strength to be achieved at the operating temperature of the battery. It has also been shown that this film has a lower tendency to creep. Furthermore, the film has a reduced thermal expansion, which leads to less stresses in the cooling device when the temperature changes. The metal foil or the metallized further plastic foil achieves better heat distribution over the surface of the cooling device, as a result of which its efficiency is improved / 46
    N2017 / 21900-AT-00 can. Due to the better heat distribution due to the improved thermal conductivity of the film, hot spots in the operation of the cooling device can also be better prevented. In addition, the cooling device can also be given a barrier function.
    The further film can also have at least one second plastic film, which is partially connected to the first plastic film of the laminate of the film in connection areas, so that at least one cavity is formed between the connection areas, which forms the at least one coolant channel. The manufacture of the cooling device can thus be further simplified.
    For the reasons given above for laminating the film, it can be provided according to a further embodiment variant that the further film also consists of a laminate that the second plastic film, a reinforcement layer connected to it, a metal foil connected to the reinforcement layer or a metallized connection to the reinforcement layer has additional plastic film.
    It can also be provided that the reinforcement layer has a fiber reinforcement. With the fiber reinforcement, the coefficient of thermal expansion of the reinforcing element can be reduced and approximated to the value of the foils. The heat transfer element can thus have less residual stress and a lower tendency to warp.
    According to an embodiment variant, the fiber reinforcement can be formed by a fabric, whereby a further improvement in the mechanical behavior of the cooling device can be achieved.
    It is also possible for the first plastic film and / or the second plastic film and / or the metallized further plastic film to consist of a plastic which is selected from a group consisting of PE, POM, PA, PPS, PET, cross-linked polyolefins, thermoplastic elastomers based on ether / ester, styrene block copolymers, silicone elastomers. In particular, these plastics have been used for the production of the cooling device with a / 46
    N2017 / 21900-AT-00 higher degree of automation due to the better extrusion capability was found to be advantageous.
    To increase the cooling capacity, it can be provided that several foils are arranged one above the other in the direction of the cells, between which several cooling channels are formed. The use of the film and, if appropriate, further film proves to be advantageous since, despite the higher cooling capacity, the cooling device can be lightweight.
    According to a further embodiment variant of the accumulator, a fiber layer can be arranged between the plurality of foils arranged one above the other, whereby a further weight reduction can be achieved, in particular if, according to one embodiment variant, it is provided that the coolant channel or the cooling channels is or are at least partially formed in the fiber layer.
    According to another embodiment variant of the accumulator, it can be provided that the outlet and / or the inlet is formed by a spacer element between the film and the further film. A better separation of the foils of the cooling device in the area of the at least one coolant channel at least in the area of the inlet and / or outlet can thus be achieved, with improved sealing of the cooling device being easier to achieve in these areas.
    Improved cooling of the cells can be achieved according to another embodiment of the battery if the cooling channel is arranged in a spiral shape.
    With regard to the simplicity of the design, the cooling capacity and the arrangement between the cells, it is advantageous if, according to a design variant of the battery, it is provided that the cooling device is tubular.
    For a better understanding of the invention, this will be explained in more detail with reference to the following figures.
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    Each shows in a simplified, schematic representation:
    Figure 1 shows an accumulator in an oblique view from above.
    2 shows a first arrangement of cells in the accumulator in a view from above;
    3 shows a second arrangement of cells in the accumulator in a view from above;
    4 shows a third arrangement of cells in the accumulator in a view from above;
    Fig. 5 shows a first embodiment of the arrangement of a cooling device in
    Accumulator in oblique view;
    6 shows the variant of the arrangement of the cooling device in the accumulator according to FIG. 5, top view;
    7 shows the cooling device of the accumulator according to FIG. 5 in a side view;
    8 shows a second embodiment variant of the arrangement of a cooling device in the accumulator in an oblique view;
    9 shows a detail of the embodiment variant of the arrangement of the cooling device in the accumulator according to FIG. 8, top view;
    10 shows a third embodiment variant of the arrangement of a cooling device in the accumulator in an oblique view;
    11 shows the variant of the arrangement of the cooling device in the accumulator according to FIG. 10, top view;
    12 shows a detail from a fourth embodiment variant of the arrangement of a cooling device in the accumulator in plan view;
    13 shows a fifth embodiment variant of the arrangement of a cooling device in the accumulator in an oblique view;
    14 shows a detail from the cooling device of the accumulator according to FIG.
    in side view;
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    15 shows a sixth embodiment variant of the arrangement of a cooling device in the accumulator in an oblique view;
    16 shows the cooling device of the accumulator according to FIG. 15 in a side view;
    17 shows a detail from a seventh embodiment variant of the arrangement of a cooling device in the accumulator in an oblique view;
    18 shows the cooling device of the accumulator according to FIG. 17 in a side view;
    19 shows an eighth embodiment variant of the arrangement of a cooling device in the accumulator in an oblique view;
    20 shows a section of a ninth embodiment variant of the arrangement of a cooling device in the accumulator in an oblique view;
    21 shows a detail from a tenth embodiment variant of the accumulator;
    22 shows a detail from an eleventh embodiment variant of the accumulator;
    23 shows a detail from another embodiment variant of the cooling device;
    24 shows a detail from a further embodiment of the cooling device;
    25 shows a detail from an embodiment variant of the cooling device with several cooling levels one above the other.
    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 accordingly to the new position.
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    The following statements can be applied to all variants of the invention, unless the description or the drawings indicate otherwise.
    In Fig. 1 is an accumulator 1, i.e. a rechargeable battery, shown in an oblique view. The accumulator comprises several cells 2, which have a cylindrical shape. In this embodiment variant of the accumulator, the cells 2 are held in position by at least one frame element 3. The at least one frame element 3 has openings through which the cells are inserted.
    In the example shown in concrete terms, an upper and a lower frame element 3 are provided. However, only one frame element 3 can also be present.
    It should already be stated at this point that the number of cells 2 in the illustrated embodiment variants of the accumulator 1 is not to be understood as limiting the scope of protection.
    Furthermore, several cells 2 can be combined to form a cell module. For example, the accumulator 1 shown in FIG. 1 can be such a module. Several of these modules can subsequently be installed in an accumulator 1 in order to increase its performance.
    The cells 2 serve to store the electrical energy. For this they have a corresponding structure. For example, a cell can be a layering of foils comprising the anode, the cathode and a separator, as is known per se. In this regard, reference is made to the relevant prior art.
    The cells 2 can be arranged differently in the accumulator 1 or in the cell module. Three versions are shown in FIGS. 2 to 4. For example, the cells 2 can be arranged in rows, with every second row being offset by approximately half a cell width (= diameter of the cell). The cells of every second row are thus arranged in the gaps of the adjacent rows of cells, as shown in FIG. 2. The cells 2 in a triangular grid / 46
    N2017 / 21900-AT-00 arranged from equilateral triangles. Such a triangle is indicated by dashed lines in FIG. 2.
    However, the non-offset embodiment variant is also possible, as shown in FIG. 3. Here, the cells 2 are arranged in a grid of squares, as is also indicated by dashed lines.
    FIG. 4 shows an arrangement in which a central cell 2 is surrounded by six cells 2 to form a hexagon shape.
    The accumulator 1 is not limited to one of the illustrated patterns of the arrangement of the cells 2.
    The accumulator further comprises at least one cooling device 4 (more than one cooling device 4 can also be arranged in the accumulator) for cooling or tempering the cells 2, as is shown in a first embodiment variant of the arrangement of this cooling device 4 in the accumulator 1 in FIG. 5 and 6 is shown.
    The cooling device 4 has at least one coolant channel 5, at least one coolant inlet 6 and at least one coolant outlet 7. A liquid coolant, for example a glycol / water mixture, is introduced into the coolant channel 5 via the coolant inlet 6 and is discharged again with the coolant outlet 7. The cooling device 4 is integrated in a corresponding coolant circuit, which is not shown here.
    The cooling device 4 has at least one single-layer or multi-layer film 8, which is arranged at least partially between the cells 2 and which forms the coolant channel 5.
    Due to the flexibility of the film 8, the cooling device 4 can find a better place in the spaces between the cells 2 and, at the same time, can also fit better on the surface of the cells 2, in particular directly, as can be seen in particular in FIG. 6. Since the film 8 is flexible, that is to say is not stiff, this film 8 can adhere to unevenness in the cells 3 or between the / 46
    N2017 / 21900 AT-00
    Adjust cells 2 better. In addition, the expansion of the cells 2 can thereby
    Temperature increase can be made easier. A balancing mass between the cooling device 4 and the cells 2 is not necessary. The heat transfer from the cells 2 into the cooling device 4 can thus be improved.
    In this embodiment variant, the cooling device 4 extends approximately linearly (apart from the waviness due to the contact with the cells 2) between two rows of cells 2. After the rows are offset from one another (see explanations for FIG. 2), the film is applied 8 to the cells 2 alternately, ie that the film 8 abuts alternately with one side on the cells 2 of the first row and with the second side on the cells 2 of the second row in the longitudinal direction of the cooling device 4. If more rows of cells 2 are arranged in the accumulator 1, more than one cooling device 4 can also be arranged, as can be seen in part from the other figures.
    As can be seen in particular from FIG. 5, the cooling device 4 preferably extends over at least approximately the entire height of the cells 2.
    Depending on the number of cells 2 in the rows, the cooling device 4 has an at least approximately rectangular (as in FIGS. 5 and 6) or at least approximately square shape.
    The coolant inlet 6 and / or the coolant outlet 7 can be designed as a pipe socket, that is to say cylindrical. In particular, they consist of a plastic that is connected to the film 8, in particular is integrally connected, for example welded or glued.
    The coolant channel 8 is formed by the film 8 itself. For this purpose, a layer of film can be “folded” and the open sides can be firmly bonded to one another along the side edges of the film parts lying on top of one another. However, two (or more) film blanks can also be placed one on top of the other and cohesively connected on all sides to form connecting areas, for example weld seams 9, as can be seen in FIG. 7/46
    N2017 / 21900-AT-00. The connection areas are interrupted in the areas in which the coolant inlet and the coolant outlet 7 are arranged.
    If necessary, more than one connection area, for example more than one weld 9, can be arranged or formed per side edge of the film 8 in order to give the cooling device 4 greater security against leaks.
    In the simplest case, the coolant channel 5 can be designed as an unbranched channel, a straight channel. However, it is also possible to adapt the flow of the coolant to the respective circumstances as desired. In FIG. 7, for example, a first coolant channel section 10 and a second coolant channel section 11 run at least approximately parallel to one another. The two coolant channel sections 10, 11 are connected to one another by a plurality of coolant channel sections 12 oriented perpendicularly thereto. The incoming coolant is therefore divided into several partial flows and, after passing through the coolant channel section 12, combined again to form a coolant flow.
    In general, the coolant channel 5 can also be configured to run in a meandering manner.
    Here too, the use of at least one film 8 for the cooling device 4 proves to be an advantage, since the specific design of the coolant channel 5 can be easily produced by arranging further connection areas, in particular further weld seams 13, in particular simultaneously with the production of the connection areas along the side edges, for example, the weld seams 9 can take place.
    It should be pointed out that the course of the coolant channel 5 specifically shown in FIG. 7 is not to be understood as limiting the scope of protection.
    The cooling device 4 can also have more than one coolant inlet 6, more than one coolant outlet 7 and more than one coolant channel 5.
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    In the other figures there are more and, if necessary, independent ones
    Embodiments of the accumulator 1 are shown, again using the same reference numerals or component designations as in FIGS. 1 to 7 for the same parts. In order to avoid unnecessary repetitions, the detailed
    Description of the FIGS. 1 to 7 pointed out or referred.
    As already noted above, the accumulator 1 can also have more than one cooling device 4. As an example, an accumulator 1 is shown in FIGS. 8 and 9, which has two cooling devices 4 arranged next to one another, each cooling device 4 being assigned to two rows of cells 2.
    In contrast to the embodiment variant of the accumulator 1 described above, the cooling device 4 is tubular here. Only one coolant channel 5 can be formed between the coolant inlet 6 and the coolant outlet 7. However, it is also possible for more than one coolant channel 5 to be formed, for example two, as is indicated in FIG. 8 with a weld seam 13. The two coolant channels 5 run parallel to one another in a flow direction 14 of the coolant.
    The coolant inlets 6 and the coolant outlets 7 are at least partially funnel-shaped, so that the coolant can be divided more quickly into the available cross-sectional area. Essentially, the two cooling devices 4 thus look approximately tubular.
    It can be seen from FIG. 9 that the cooling devices 4 have widenings 15 in the area between the cells. Again, this can be achieved due to the flexibility of the film 8. As a result of these widenings 15, the two cooling devices 5 rest on the cells 2 over a large area.
    It can also be seen from FIGS. 8 and 9 that two rows of cells, between each of which a cooling device 4 is arranged, have no offset, that is to say the cells are arranged on a square grid, as was carried out for FIG. 3 , Units formed therefrom from two rows of cells 2 and the cooling device 4 arranged between them can again / 46
    N2017 / 21900-AT-00 may be offset by approximately half a diameter of cells 2 (in FIG. 8 the two middle rows of cells 2).
    The “approx.” When offset by approximately half a cell diameter refers to the fact that cells 2 in accumulator 1 are spaced from one another and this distance must therefore also be taken into account when the rows are offset.
    10 and 11 are intended to clarify that it is also possible to equip an accumulator 1 which has more than two rows of cells 2 with only one cooling device 4. After the film 8 is flexible, it is possible to place it between cells 2 in a serpentine manner. The cooling device 4 can also be laid at least approximately in a U-shape.
    Such designs with only one cooling device 4, which are used to cool more than two rows of cells 2, have the advantage that the number of necessary coolant inlets 6 and coolant outlets 7 can be reduced.
    For the sake of completeness, it should be stated that the cooling device 4 can also be tubular in this embodiment variant of the accumulator 1.
    12 shows that it is possible to arrange the or a cooling device 4 between each row of cells 2. It is also possible for cells 2 to be arranged in a square grid and in a triangular grid, as is indicated by dashed lines in FIG. 12. From a fluidic point of view, however, the triangular grid is preferred.
    In all the embodiment variants described so far, the cooling device 4 or the cooling devices 4 can be laid flexibly. The explanations are also not limited to a certain number of cells or a certain length of the cooling device 4, since the latter can be configured as desired.
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    13 shows an embodiment of the accumulator 1 in which a central one
    Cell 2 is surrounded by seven cells 2 in shape. In order to allow the view of the cooling device 4 located between the central cell 2 and the outer cells 2, the seventh outer cell is not shown in FIG. 13.
    In this embodiment variant, two tubular cooling devices 4 are combined with one another by connecting the two hoses to one another, in particular in a materially integral manner, for example by welding. This creates a single tube with which it is possible, on the one hand, to cool the central cell 2 and, on the other hand, to prevent the central cell 2 from cooling down too much. For this purpose, for example, the film surface and / or the type of film of the film 8 used can additionally be adapted accordingly.
    The design of the coolant channel 5 can in turn be made variable. For example, this can be formed by the further connection areas of the foils 8, in particular the weld seams 13, in such a way that the coolant runs zigzag through the cooling device 4, as is indicated in FIG. 14.
    However, it is also possible for the coolant to flow at least approximately in the direction of the height of the cells 2, as is illustrated by FIGS. 15 and 16. The flow can be deflected only in the area of the coolant inlet 6 and / or the coolant outlet 7. The deflection can create turbulence in order to optimally use the coolant. Such turbulence can alternatively or additionally be achieved by correspondingly high inlet flow velocities.
    In addition to the illustrated runs of the coolant channel 5, FIGS. 17 and 18 are intended to illustrate that this can also run differently than shown, in particular can run in a spiral. This spiral course can also be generated either by appropriate arrangement of a tubular cooling device 4 or by appropriate design of connection areas, in particular the weld seams 13 in the film 8.
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    19 to 22, the latter has a self-supporting housing 16, which is part of the cooling device 4. In the housing 16, recesses or openings 17 are arranged or formed in a cover part 18 and recesses or openings 19 in a base part 20. The cells 2 are inserted into or through the recesses or openings 17 in the cover part 18 and into or through the recesses or openings 19 in the base part 20, the cells 2 and both the other design variants of the battery 1 above and below are arranged projecting over the cooling device 4. The housing 16 can thus replace the at least one frame element 3 according to FIG. 1.
    The recesses or openings 17, 19 are adapted to the cross-sectional shape of the cells 2, that is to say in particular circular in cross-section.
    It should be pointed out that the cooling device 4 is shown partially in section in FIG. 20 in order to provide an insight into the interior of the cooling device 4.
    The housing 16 preferably consists at least partially of an optionally fiber-reinforced plastic, in particular a hard plastic, or of a metal, for example aluminum or an aluminum alloy.
    Between each two recesses opposite each other in the direction of the height of the cells 2, for example a breakthrough 17 in the cover part 18 and a breakthrough 19 in the bottom part 20, single or multilayer films 8 are arranged and connected to the housing 2, in particular welded or glued , The foils 8 preferably also extend into the recesses or openings 17, 19, in particular over the entire height of these recesses or openings 17, 19 in the direction of the longitudinal extent of the cells 2, and are with the side walls of the recesses or openings 17 , 19 connected, as can be seen from FIGS. 21 and 22.
    In these embodiment variants of the accumulator 1, the foils 8 merely represent a membrane with which an interior space 21 of at least one inlet and / or 46
    N2017 / 21900 AT-00
    Drain for the coolant closed housing 16 is separated from the cells 2. The interior 21 itself of the housing 16 forms the coolant channel 5 of the cooling device 4. The housing 16 is therefore completely flowed through by the liquid coolant. The liquid pressure during operation presses the foils 8 against the cells 2, so that the cells 2 can be cooled appropriately.
    As can be seen from FIGS. 21 and 22, it can be provided according to one embodiment variant that the recesses in the housing 16 have a larger diameter than the outer diameter of the cells 2, so that the foils 8 are spaced apart from the cells in this area 2 are arranged. These areas can be at least partially at least approximately conical (Fig. 21) or cylindrical (Fig. 22). The conical design is cheaper for production, while the cylindrical version is a space-optimized version.
    23 shows a detail of a variant of the cooling device 4 in cross section.
    It should be mentioned at this point that the cooling device 4 of the following embodiment variants or the film 8 described below or further film can also be used in the embodiment variants of the accumulator 1 presented above. To clarify this, it should be mentioned, for example, that the film 8 in the accumulator according to FIG. 5 can be composed as described below and, if appropriate, can be connected to a further film as described below.
    However, it should also be pointed out that the film 8 of the embodiment variants of the accumulator 1 according to FIGS. 1 to 22 can also be constructed or composed differently than described below.
    The cooling device 2 comprises the film 8 and a further single- or multi-layer film 10. The film 8 and the further film 22 are formed with the at least one coolant channel 5 between the film 8 and the further film 22/46
    N2017 / 21900-AT-00 connected to each other in connection areas 23. Areas that are not connected remain between the connection areas 22, in which the at least one coolant channel 5 is formed by the spacing of the film 8 from the further film 22. The film 8 and the further film 22, which is arranged in particular above the film 8, extend, as in the embodiment variants of the accumulator 1 described above, without the housing 16, preferably over an area which is preferably at least approximately, in particular 100%, of the area of the Cooling device 2 corresponds (viewed in plan view).
    In this embodiment variant of the cooling device 4, the film 8 consists of a laminate which has a first plastic film 24, a reinforcement layer 25 connected to it, a metal film 26 connected to the reinforcement layer 25 or a metallized further plastic film connected to the reinforcement layer 25.
    The at least one coolant channel 5, as in the embodiment variants of the accumulator 1 without the housing 16 described above, is not formed by separate components but is formed by the only partial connection of the foils, that is to say in this embodiment variant the foil 8 with the further foils 22. The wall or walls of the at least one coolant channel 5 are thus formed by the film 8 and the further film 22, preferably half each.
    The further film 10 preferably comprises or consists of at least one second plastic film 27. The second plastic film 27 is partially connected to the first plastic film 24 of the laminate of the film 8 in the connection areas 23, so that at least one cavity is formed between the connection areas 23, which forms the at least one coolant channel 5.
    It can further be provided that, according to an embodiment variant, the further film 22 also consists of a laminate which comprises the second plastic film 27, a reinforcement layer 28 connected to it, a metal film 29 connected to the reinforcement layer 28 or a metallized further one connected to the reinforcement layer 28 Has plastic film.
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    In principle, other laminates can also be used. For example, only the film 8 can be provided with the metal film 26 or only the further film 22 can be provided with the metal film 29. Likewise, only the film 8 can have the reinforcement layer 25 or only the further film 22 can have the reinforcement layer 28. More than three-layer structures of the film 8 and / or the further film 22 are possible. However, the film 8 and the further film 22 are preferably of the same design.
    The reinforcement layer 28 and / or the metal foil 29 of the further foil 22 can be different from the reinforcement layer 25 and / or the metal foil 1264 of the foil 8. However, the two reinforcement layers 25, 28 and / or the two metal foils 26, 29 are preferably the same educated.
    The two foils 8, 22 are arranged in such a way that the two plastic foils 24, 27 abut one another and the above-mentioned partial connection is formed via these plastic foils 24, 27. If the further film 22 (only) has the second plastic film 27, this second plastic film 27 is arranged immediately adjacent to the plastic film 24 of the film 8 and connected to it.
    Instead of a metal foil 26, 29 it is also possible to use metallized further plastic foils, in which case the metallization is preferably arranged between the reinforcing layer 25, 28 and the further plastic foil.
    The first plastic film 24 and / or the second plastic film 27 and / or the metallized further plastic film preferably consists of at least 80% by weight, in particular at least 90% by weight or 100% by weight, of a thermoplastic or an elastomer. The 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
    N2017 / 21900-AT-00 based, thermoplastic polyurethanes, especially 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 24 and / or the second plastic film 27 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) 25, 28 preferably comprise or consist of a fiber reinforcement.
    The fiber reinforcement is preferably designed as a separate layer, which is arranged between the plastic film 24 or the plastic film 27 and the metal film 26 or the metal film 29 or the metallized further plastic film. If cavities are formed in the fiber reinforcement layer, these can also be at least partially filled with the plastic of the plastic film 24 or the plastic film 27 or the metallized further plastic film.
    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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    N2017 / 21900 AT-00
    Glass fibers are preferably used as the fiber reinforcement layer. 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 scrims, for example as a fleece. However, a woven or knitted fabric made of the fibers and / or threads is preferred. It is also possible that the fabric or knitted fabric is only present in some areas and the remaining areas of the fiber reinforcement are formed by a scrim.
    It is also possible for rubberized fibers and / or threads to be used as or for fiber reinforcement.
    When using a woven fabric, different types of weave are possible, especially plain, twill or satin weave. A plain weave is preferably used.
    However, it is also possible to use an open-mesh glass fabric or glass scrim.
    The fiber reinforcement can be designed as a single layer. However, it is also possible for the fiber reinforcement to have a plurality of individual layers, if appropriate separate from one another, for example two or three, it being possible for at least some of the plurality of individual layers to consist at least in regions, preferably entirely, of fibers and / or threads different from the rest of the individual layers ,
    As an alternative or in addition to the fiber reinforcement, the reinforcement layers 25, 28 can have a mineral filling. Calcium carbonate, talc, quartz, wollastonite, kaolin or mica can be used as the mineral filler (mineral filler).
    / 46
    N2017 / 21900 AT-00
    The metal foil 26, 29 is in particular an aluminum foil. However, other metals can also be used, such as copper or silver.
    The metal foil 26, 29 can have a layer thickness between 5 μm and 100 μm.
    If the metallized further plastic film is used, the metals mentioned can be used for the metallization. The metallization preferably has a layer thickness which is selected from a range from 5 nm to 100 nm. The metallic vapor deposition of the further plastic film can be produced using methods known from the prior art.
    The plastic film 24 and / or the plastic film 27 and / or the further plastic film which has the metallization can have a layer thickness between 10 μm and 200 μm.
    The layer thickness of the reinforcement layer (s) 25, 28 can be between 5 μm and 50 μm.
    The film 8 and / or the further film 22 can in particular have the following structure in the order given:
    - Plastic film 24 or plastic film 27 made of PP;
    - Reinforcement layer 25, 28 made of a glass fiber fabric;
    - Metal foil 26, 29 made of aluminum with a layer thickness of 12 microns.
    In the event that the further film 10 consists only of the plastic film 15, a polyethylene terephthalate (PET) is preferably used as the plastic.
    The film 8 and / or the further film 22 can also have at least one further layer, for example at least one further reinforcement layer and / or at least one primer layer and / or at least one thermotropic layer.
    / 46
    N2017 / 21900 AT-00
    Although the film 8 and the further film 22, if this is also a film laminate, can in principle be used in the form of the individual films for the production of the cooling device 4, so that the film laminate (s) are only formed during the production of the cooling device 4 , It is advantageous if the first film 8 and / or the further film 22 are used as a (laminated) semi-finished product.
    To connect the individual layers of the laminate or the laminates, these can be glued together using adhesives. The adhesives mentioned above are suitable for this. In addition to adhesives, coextrusion and extrusion coating can also be used as a connection option. Of course, a combination is also possible that several plastics are coextruded and glued together with an extrusion-coated metal or (fiber) reinforcement layer. In general, all known methods for producing composite films or film laminates can be used.
    According to a further embodiment variant, it can be provided that the cooling device 4 also has at least one additional film which is partially connected to the film 8 or the further film 22, as was described above for connecting the film 8 to the further film 22. The coolant channels 5 can thus be arranged one above the other in at least two levels, in which case they are preferably not congruent but laterally offset from one another in the manner described above or to be described below. In this case, it is advantageous if the film 8 or the further film 22 have the plastic film 24 or the plastic film 27 on both outer sides (surfaces), so that the composite with the additional films can be produced, in particular two again Sealing films can be connected to each other.
    FIG. 6 shows a section of another embodiment variant of the cooling device 4. In this, a fiber layer 30, for example made of paper, is arranged between the plastic film 24 and the plastic film 27 (both shown in FIG. 23). This fiber layer 30 is liquid-resistant. For this / 46
    N2017 / 21900-AT-00, a coating 31 can be provided on the surfaces that come into contact with the coolant. But there is also the possibility that the
    Fibers of the paper or the fiber layer 30 are in themselves liquid-resistant, for example coated.
    The coating 31 also has another function. The at least one coolant channel 5 is provided in the fiber layer 30, for example by embossing or another shaping method. In order to be able to maintain the shape produced during the operation of the accumulator 1 or the cooling device 4, the fiber layer 30 with the coating 31 can be given a higher strength or rigidity.
    The coating 31 can be a hardened adhesive layer, for example.
    In order to be able to save further weight of the accumulator 1 or the cooling device 2, it can be provided according to a further embodiment variant, which is shown in FIG. 25, that several of these fiber layers 30 provided with the coating 31 are between the film 8 and the further one Foil 22 are arranged one above the other, in particular directly one above the other.
    The film 8 and / or the further film 22 can also be formed as individual films or as laminates in these embodiment variants of the cooling device 4.
    In the preferred embodiment variant of the cooling device 4, this also has corresponding connection elements (coolant inlet 6, coolant outlet 7) for connecting the inlet line and the outlet line for the coolant. In principle, these can be designed as conventional connection elements, as are known from the prior art. In the preferred embodiment variant, however, these connection elements are also at least partially, in particular entirely, made of a plastic, wherein the plastics mentioned above can be used as plastics.
    According to another embodiment variant of the accumulator 1, it can be provided that the coolant outlet 6 and / or the coolant inlet 7 through a dis / 46
    N2017 / 21900-AT-00 dance element (not shown) is formed between the film 8 and the further film 22. The spacer elements preferably also consist of plastic. It is further preferred if the tightness of the connections of the
    Cooling device 4 for the coolant is improved.
    It should be mentioned in this connection that the specific placement of the coolant inlet 6 and the coolant outlet 7 depends on the specific design of the at least one coolant channel 5.
    Like the at least one coolant channel 5, the above-mentioned collecting channels for the coolant can be produced by only partially connecting the film 8 to the further film 22. Please refer to the corresponding explanations above.
    The described partial connection of the film 4 with the further film 22 or an additional film or the two plastic films 24, 27 of the laminates can be carried out in a laminating press. The connection can take place by the action of an elevated temperature and an increased pressure, as is known in the case of lamination or heat sealing. The specific temperature depends on the plastics used.
    Instead of the laminating device, a press can also be used, in particular for producing long-fiber-reinforced films 8, 22 or a long-fiber-reinforced cooling device 4. The fibers are impregnated and pressed with the plastic, as a result of which the fiber-reinforced film material is produced.
    For a higher degree of customization of the cooling device 4 with a high degree of automation, it can be provided that a welding robot is used for the connection. The connection areas 23 (FIG. 23) can thus be individually defined and programmed, so that the arrangement or configuration of the at least one coolant channel 5 can be adapted very flexibly to individual needs.
    In the two methods mentioned for producing the cooling device 4, the foils 8, 22 are connected to one another or the foil 8 to the housing 16/46
    N2017 / 21900-AT-00 cohesively either by welding or by gluing, whereby mixed variants of these processes are also possible. In general, other methods can also be used for this.
    For example, temperature pulse welding, laser welding, IR welding, ultrasonic welding, high-frequency welding can be used as the welding method.
    In general, it should be noted that in the case of more than one coolant channel 5 in the cooling device 4, it can be advantageous if a common inlet and then a common outlet are arranged in front of the plurality of coolant channels 5, which can each be designed as a collecting channel from which each the coolant channels branch or into which they open. However, there is also the possibility that each coolant channel 5 has its own coolant inlet 6 and / or its own coolant outlet 7.
    Furthermore, the coolant inlet 6 and the coolant outlet 7 can be arranged on one side of the cooling device 4. However, the coolant inlet 6 and the coolant outlet 7 can also be arranged or formed on or in different sides of the cooling device 4.
    For the (automatic) introduction of the cells 2 into the cooling device 4 with the housing 16, a negative pressure can be generated in the latter, whereby the film 8 is drawn into the housing 16.
    The accumulator 1 can be used in a wide variety of areas, such as in motor vehicles (e-mobility), in aircraft, etc. It is also possible to combine several accumulators 1 into a single one, depending on the application.
    The exemplary embodiments show possible design variants of the accumulator 1, it being noted at this point that combinations of the individual design variants with one another are also possible.
    / 46
    N2017 / 21900 AT-00
    For the sake of order, it should finally be pointed out that for the better
    Understanding of the structure of the accumulator 1 and the cooling device 2 were not necessarily shown to scale.
    / 46
    N2017 / 21900 AT-00
    LIST OF REFERENCE NUMBERS
    accumulator
    cell
    frame element
    Cooling device coolant channel coolant inlet coolant outlet
    foil
    Weld
    Coolant channel section
    Coolant channel section
    Coolant channel section
    Weld seam flow direction
    widening
    casing
    breakthrough
    cover part
    breakthrough
    the bottom part
    inner space
    Foil connection area plastic foil reinforcement layer metal foil plastic foil reinforcement layer metal foil fiber layer
    Coating / 46
    N2017 / 21900 AT-00
    权利要求:
    Claims (16)
    [1]
    claims
    1. accumulator (1) with a plurality of cylindrical cells (2) for storing electrical energy and at least one cooling device (4) for cooling or tempering the cells (2), the cooling device (4) having at least one coolant channel (5), at least one Has coolant inlet (6) and at least one coolant outlet (7), characterized in that the cooling device (4) has at least one single-layer or multilayer film (8) which is at least partially arranged between the cells (2).
    [2]
    2. Accumulator (1) according to claim 1, characterized in that the cooling device (4) has a self-supporting housing (16) in which recesses are arranged, in which the cells (2) are arranged, one or multilayer films (8) are arranged between two mutually opposite recesses, and in particular between the housing (16) and the cells (2), and are connected to the housing (16).
    [3]
    3. Accumulator (1) according to claim 2, characterized in that the recesses in the housing (16) have a larger diameter compared to an outer diameter of the cells (2), so that the foils (8) are at least partially at least approximately conical.
    [4]
    4. Accumulator (1) according to claim 1 to 3, characterized in that the cooling device (4) has a further single or multi-layer film (22), the film (8) and the further film (22) to form the at least a coolant channel (5) between the film (8) and the further film (22) are interconnected.
    [5]
    5. Accumulator (1) according to one of claims 1 to 4, characterized in that the film (8) consists of a laminate which has a first plastic
    29/46
    N2017 / 21900-AT-00 foil (24), a reinforcing layer (25) connected thereto, a metal foil (26) connected to the reinforcing layer (25) or a metallized further plastic foil connected to the reinforcing layer (25).
    [6]
    6. The accumulator (1) according to claim 4 or 5, characterized in that the further film (22) has at least one second plastic film (27) which is partially connected to the first plastic film (24) of the laminate of the film (8) in connection areas ( 23) is connected, so that at least one cavity is formed between the connection areas (23) and forms the at least one coolant channel (5).
    [7]
    7. accumulator (1) according to any one of claims 4 to 6, characterized in that the further film (22) consists of a laminate, the second plastic film (27), an associated reinforcing layer (28), one with the reinforcing layer ( 28) connected metal foil (29) or a metallized further plastic foil connected to the reinforcing layer (28).
    [8]
    8. accumulator (1) according to one of claims 4 to 7, characterized in that the reinforcing layer (25, 28) has a fiber reinforcement.
    [9]
    9. accumulator (1) according to claim 8, characterized in that the fiber reinforcement is formed by a fabric.
    [10]
    10. Accumulator (1) according to one of claims 4 to 9, characterized in that the first plastic film (24) and / or the second plastic film (27) and / or the metallized further plastic film consists of a plastic which is selected from a group consisting of PE, POM, PA, PPS, PET, cross-linked polyolefins, thermoplastic elastomers based on ether / ester, styrene block copolymers, silicone elastomers.
    30/46
    N2017 / 21900 AT-00
    [11]
    11. Accumulator (1) according to one of claims 1 to 10, characterized in that in the direction of the cells (2) a plurality of foils (8) are arranged one above the other, between which a plurality of cooling channels (5) are formed.
    [12]
    12. Accumulator (1) according to claim 11, characterized in that a fiber layer (30) is arranged between the plurality of films (8, 22) arranged one above the other.
    [13]
    13. Accumulator (1) according to claim 12, characterized in that the coolant channel (5) or the coolant channels (5) is or are at least partially formed in the fiber layer (30).
    [14]
    14. Accumulator (1) according to one of claims 1 to 13, characterized in that the coolant outlet (7) and / or the coolant inlet (6) is formed by a spacer element between the film (8) and the further film (22).
    [15]
    15. Accumulator (1) according to one of claims 1 to 14, characterized in that the cooling channel (5) is arranged in a spiral shape.
    [16]
    16. Accumulator (1) according to one of claims 1 to 15, characterized in that the cooling device (4) is tubular.
    31/46
    N2017 / 21900 AT-00
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    同族专利:
    公开号 | 公开日
    US20210167444A1|2021-06-03|
    CN111373599A|2020-07-03|
    DE112018004864A5|2020-06-10|
    WO2019046871A1|2019-03-14|
    AT520409B1|2020-02-15|
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    法律状态:
    2020-08-15| HC| Change of the firm name or firm address|Owner name: MIBA EMOBILITY GMBH, AT Effective date: 20200626 |
    优先权:
    申请号 | 申请日 | 专利标题
    ATA50745/2017A|AT520409B1|2017-09-05|2017-09-05|accumulator|ATA50745/2017A| AT520409B1|2017-09-05|2017-09-05|accumulator|
    US16/636,113| US20210167444A1|2017-09-05|2018-08-14|Accumulator|
    DE112018004864.0T| DE112018004864A5|2017-09-05|2018-08-14|accumulator|
    CN201880053511.6A| CN111373599A|2017-09-05|2018-08-14|Storage battery|
    PCT/AT2018/060190| WO2019046871A1|2017-09-05|2018-08-14|Rechargeable battery|
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