• 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 electrical energy store (1), in particular for an electric vehicle, which has at least one battery module (2) with several electrically interconnected, in particular flat and substantially plate-shaped, battery cells (4), which in at least one stack (3) side by side or above each other between at least two pressure plates (5) are arranged, and wherein at least one battery cell (4) and / or the battery module (2) surrounded by a plastic structure (7), in particular foamed. In order to enable a secure attachment of the energy store with the least possible effort and a small number of parts, it is proposed that the battery cells (4) are foamed between the pressure plates (5) in the clamped state.
    公开号:AT513127A4
    申请号:T50332/2012
    申请日:2012-08-21
    公开日:2014-02-15
    发明作者:Harald Dipl Ing Fh Stuetz；Martin Dipl Ing Fh Michelitsch；Michael Koeroesi
    申请人:Avl List Gmbh；
    IPC主号:
    专利说明:

    1 56469
    The invention relates to an electrical energy storage, in particular for an electric vehicle, which has at least one battery module with a plurality of electrically interconnected, in particular flat and substantially plate-shaped, battery cells, which are arranged in at least one stack next to each other or one above the other between at least two pressure plates, and wherein at least a battery cell and / or the battery module surrounded by a plastic structure, in particular foamed.
    From WO 2008/048751 Al a battery with battery modules with a plurality of flat substantially plate-shaped single battery cells is known. The battery cells are stacked into a cell stack and surrounded by a battery case. Between the battery modules and the housing, a foam structure is provided.
    DE 86 20714 Ul discloses a battery with cylindrical battery cells, which are arranged in a common housing. Between the battery cells and the housing, an insulating layer is arranged.
    DE 10 2008 059 972 A1 describes a lithium-ion battery having a plurality of individual cells connected in series and / or in parallel and a cooling plate arranged on the individual cells on the pole side, wherein the individual cells are arranged in a battery housing with a cover. Support elements made of foam are arranged between the cylindrical battery cells.
    Known batteries require separate holding devices in order to mount the energy store in a vehicle, for example. The battery cells are usually firmly connected to the housing, wherein the housing is fastened to the vehicle via housing-fixed holding devices. The disadvantage is that the assembly and disassembly of the battery modules is relatively time-consuming and that many parts are required for the attachment, which increase the cost and weight of the energy storage.
    The object of the invention is to allow a safe attachment of the energy storage with the least possible effort and a small number of parts. 2
    According to the invention this is achieved in that the battery cells are foamed between the pressure plates in the clamped state. This allows a secure attachment of Battehezellen with a hung number of parts.
    It is preferably provided that at least one pressure plate, preferably all pressure plates, each have at least one support bracket which is guided through an outer wall of the energy store. The support bracket allows secure attachment of the energy storage to supporting parts of the vehicle.
    In a partially-saving embodiment of the invention it is provided that the support bracket is formed integrally with the pressure plate, wherein preferably support bracket is at least partially surrounded by the plastic structure. To attach the energy storage, the support bracket is bolted to the vehicle. The thermally insulating foam around the support bracket prevents thermal bridges to the outside.
    In a preferred embodiment of the invention, the outer wall of the energy storage device is formed by a housing surrounding the battery module, wherein a space filled by the plastic structure is formed between the battery module and the housing. The battery module can be spaced on all sides from the housing. This allows a good thermal insulation. The housing may form a protective hard outer shell for the battery modules.
    The electric cell poles of the battery cells can protrude from the plastic structure.
    Advantageously, the housing may be formed in several parts and at least consist of a lower part and a deductible lid part, wherein preferably both the lower part, and the lid part can be filled with the plastic structure.
    However, a separate housing can be dispensed with if the outer wall of the energy store is formed by the plastic structure (for example by integral foam). By a closed pore structure of the plastic structure preferably formed by a foam structure, a liquid-tight sheath of the battery modules is ensured. 3
    In the context of the invention it can further be provided that each battery cell is surrounded by a respective plastic structure per se and in addition each battery module, wherein preferably the plastic structure encloses the weld seam of the battery cells designed as pouch cells. As an alternative to pouch cells, the battery cells can also be designed as metal can cells. For metal can cells, each battery cell is surrounded by a metal case.
    In continuation of the invention may further provided that electrical cables, busbars, at least one cooling line, at least one degassing, at least one heat conduction and / or at least one thermal sensor are foamed with. As a result, high-voltage cables, low voltage cable harnesses, busbars, cooling lines, air ducts, degassing lines, heat conducting plates, control units and / or thermal sensors can be fixed by the plastic structure.
    The invention is explained in more detail below with reference to FIGS.
    1 shows an energy storage device according to the invention in an oblique view, FIG. 2 shows the energy store with the cover part removed in an oblique view, FIG. 3 shows this energy store in a side view, FIG. 4 shows battery cells of the energy store in an oblique view, FIG. 5 shows the battery cells from FIG 6 shows the energy store in a side view, FIG. 7 shows the energy store in a section according to the line VII-VII in FIG. 6, FIG. 8 shows the energy store in a front view, FIG Section in accordance with the line IX - IX in Fig. 6, Fig. 10 shows the energy storage in a section along the line X - X in Fig. 8 and Fig. 11 shows the energy storage in a plan view.
    The energy store 1 shown in the figures, formed by a rechargeable battery, has a battery module 2 with at least one stack 3 of stacked plate-shaped battery cells 4 (pouch cells), which are pressed against one another by pressure plates 5. The pressure plates 5 each have a support bracket 6, with which the energy storage device 1 can be attached to a vehicle. The energy storage device 1 may also have a plurality of battery modules 2, wherein adjacent battery modules 2 may be interconnected electrically in series or in parallel. 4
    Both the battery module 2, as well as the support brackets 6 are covered by a plastic structure 7. Furthermore, the battery cells 4 themselves can be foamed separately with a plastic structure 8, as can be seen in FIGS. 4 and 5.
    The welding edge 4 " the battery cells 4 designed as pouch cells are enclosed by the plastic structure 7, 8, whereby the battery cells 4 are mechanically fixed and thermally and / or electrically insulated.
    The battery cells 4 are clamped between the pressure plates 5 before foaming. Before foaming cooling lines can be attached to the cell poles 4 ', then the entire battery module 2 is foamed. The plastic structure 7, 8 should be elastic rather than plastically deformable after foaming.
    The outer wall la of the energy accumulator 1 is formed in the embodiment shown in the figures by a multi-part housing 9, which consists of a lower part 9a and a lid part 9b mounted thereon. The space between the battery module 2 and the lower housing part 9 a is filled with foam and filled with the plastic structure 7. Also, the lid part 9a is largely filled with the plastic structure 7.
    As can be seen from FIGS. 7, 8 and 9, there are no direct fastening points on the housing 9. The fastening points are formed by the support brackets 6 firmly connected to the pressure plates 5, which form the outer walls 1a of the energy store 1, namely the lower part 9a of the housing 9, penetrate. The housing 9 and the battery module 2 are connected to each other only by the plastic structure 7. In this way, a common supporting structure of all arranged in the housing 9 components. On the one hand, the plastic structure 7, 8 protects the battery cells 4 and, on the other hand, gives the possibility of mounting the energy store 1 on the longitudinal members, cross members or other vehicle parts in the motor vehicle by means of the pressure plates 5. The attachment of the support brackets 6 on the vehicle is rigid or possibly decoupled.
    As can be seen from FIGS. 4 and 5, the battery cells 4 can also be used separately in addition to the entire battery modules 2
    Foam plastic material structure 8 (for example, foam) may be bordered, which counteract the cycle-induced swelling of the battery cells 4. To protect the Zelipole 4 'of the battery cells 4 and for thermal insulation of the cover part 9b of the housing 9 is also filled with foam, as can be seen from Fig. 7. The thickness of the plastic structure 7 in the cover part 9b may vary, the plastic structure 7 should come as close as possible to the built-in components in order to reduce the volume of air and thus to minimize the risk of condensation. The space below the cover part 9 b can be used for cooling the battery cells 4. The Zellpol- and busbar cooling can be done for example with air, which is blown through the room. A cooling of the cell poles 4 'and the busbars can also be done by liquid cooling devices.
    Various coolant supply and discharge lines 10a, 10b, electrical power cable 10c (low voltage and / or high voltage cable), busbars, degassing, Wärmeleitbleche (for better distribution of heat between the battery cells), air ducts, control units, thermal sensors or the like may also be at least partially foamed , A not further shown line system for cell degassing can be foamed into the plastic structure 7 around the battery cells 4 or in the cover part 9b. Thus, loose cables and wires can be avoided. In this case, for example, the coolant supply and discharge lines 10a, 10b may be performed by the outer wall la and protrude from the housing 9.
    Depending on the application, the housing 9 may be formed of plastic, aluminum or steel sheet.
    A special form of the energy store 1 is achieved by the plastic structure 7 at the same time forms the outer wall 1 '- a separate housing 9 can thus be omitted. The plastic structure 7 can be subsequently applied with a predefined layer thickness (for example, 2 mm - 5 mm) to the plastic structure 8 of the battery cells 4 for protection against external influences (splashing water, aging, or the like) or is pressed or shaped as a separate component in advance, and may thereafter be bonded to the already existing cellular foam dressing in a non-releasable manner, for example by gluing. Also, the cell pole 4 'covering lid part 9b can be executed without a shell and
    be formed by a plastic structure 7. The foam structure 7 should harden with a dense surface. The advantage of this design is that cost and weight can be saved, since separate housing shells omitted.
    The plastic structure 7 may be self-supporting, whereby only a small amount of holding material is necessary for vehicle integration.
    The shape and location of the receiving points can thus vary and is independent of the existing vehicle body and less dependent on the exact location and arrangement of longitudinal or transverse beams of the vehicle.
    Due to the pronounced lightweight construction of the energy storage device 1, the energy density can be significantly increased and at the same time the production costs are considerably reduced by simplifying the manufacturing process and by reducing complex components. Furthermore, the reliability of the battery and the mechanical and chemical protection for the battery cells 4 are substantially improved by the plastic structure. The plastic structure 7 causes optimal thermal insulation of the battery cells. The plastic structure 7 displaces the volume of air within the energy storage 1 to a minimum, whereby the risk of condensation can be significantly reduced.
    权利要求:
    Claims (16)
    [1]






    1. Electric energy storage device (1), in particular for an electric vehicle, which has at least one battery module (2) with a plurality of electrically interconnected, in particular flat and substantially plate-shaped, battery cells (4) which are arranged in at least one stack (FIG. 3) are arranged side by side or one above the other between at least two pressure plates (5), and wherein at least one battery cell (4) and / or the battery module (2) surrounded by a plastic structure (7), in particular foamed, characterized in that the battery cells ( 4) are foamed between the pressure plates (5) in the clamped state.
    [2]
    Second energy storage device (1) according to claim 1, characterized in that at least one pressure plate (5), preferably all pressure plates (5), in each case at least one support bracket (6), which through an outer wall (la) of the energy store (1) therethrough is guided.
    [3]
    3. Energy storage (1) according to claim 2, characterized in that the support bracket (6) is formed integrally with the pressure plate (5).
    [4]
    4. Energy storage (1) according to claim 2 or 3, characterized in that support bracket (6) is at least partially surrounded by the plastic structure (7).
    [5]
    5. energy store (1) according to one of claims 1 to 4, characterized in that the outer wall (la) of the energy store (1) by a battery module (2) surrounding the housing (9) is formed, wherein between the battery module (2) and the housing (9) is formed by a space filled by the plastic structure (7), and wherein preferably the housing (9) made of aluminum, steel or plastic.
    [6]
    6. energy storage device (1) according to claim 5, characterized in that the battery module (2) on all sides from the housing (9) is spaced.

    8th
    [7]
    7. energy storage device (1) according to claim 5 or 6, characterized in that the housing (9) is formed in several parts and at least from a lower part (9a) and a lid part (9b) which can be placed thereon, wherein preferably both the lower part (9a) , as well as the lid part (9b) are filled with the KunststofFstruktur (7).
    [8]
    8. energy storage device (1) according to one of claims 1 to 7, characterized in that the outer wall of the (la) energy storage device (1) through the plastic structure (7) is formed.
    [9]
    9. energy store (1) according to one of claims 1 to 8, characterized in that the Kunstsoffstruktur (7, 8) is formed by a foam structure.
    [10]
    10. energy store (1) according to one of claims 1 to 9, characterized in that the preferably thermally insulating plastic structure formed (7, 8) has a closed pore structure.
    [11]
    11. Energy store (1) according to one of claims 1 to 10, characterized in that each battery cell (4) is surrounded by a plastic structure (8) by itself and additionally each battery module (2).
    [12]
    12. energy store (1) according to one of claims 1 to 11, characterized in that the electric cell poles (40 from the plastic structure (7, 8) protrude.
    [13]
    13. Energy store (1) according to one of claims 1 to 12, characterized in that the battery cells (4) are designed as pouch cells, wherein the plastic structure (7, 8) surrounds the weld (4'0 of the pouch cells.
    [14]
    14 energy storage device (1) according to one of claims 1 to 13, characterized in that the battery cells (4) are designed as metal-Can cells.
    [15]
    15. energy storage device (1) according to one of claims 1 to 14, characterized in that electrical cable (10c), busbars, at least one cooling line (10a, 10b), at least one air duct, at least one 9 degassing, at least one heat conduction, at least one Control unit and / or at least one thermal sensor with foamed and surrounded by the plastic structure (7).
    [16]
    16. energy storage device (1) according to one of claims 7 to 15, characterized in that between the cover part (9b) and the lower part (9a) is formed at least one space for an air duct of an air cooling. 2012 08 21 Fu
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    法律状态:
    2021-04-15| MM01| Lapse because of not paying annual fees|Effective date: 20200821 |
    优先权:
    申请号 | 申请日 | 专利标题
    ATA50332/2012A|AT513127B1|2012-08-21|2012-08-21|Electric energy storage|ATA50332/2012A| AT513127B1|2012-08-21|2012-08-21|Electric energy storage|
    EP13753848.4A| EP2888770A1|2012-08-21|2013-08-21|Electrical energy store|
    US14/422,550| US9484564B2|2012-08-21|2013-08-21|Electrical energy storage|
    CN201380050413.4A| CN104662701B|2012-08-21|2013-08-21|Electrical power storage|
    JP2015527899A| JP6444868B2|2012-08-21|2013-08-21|Electrical energy storage device|
    PCT/EP2013/067356| WO2014029794A1|2012-08-21|2013-08-21|Electrical energy store|
    KR20157006880A| KR20150046168A|2012-08-21|2013-08-21|Electrical energy store|
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