• 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) for an electric vehicle, which has 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 in a common housing (8). In order to increase the life of the electrical energy storage and to reduce the assembly costs, it is proposed that the housing (8) at least two housing parts, preferably a housing cover part (8a) and a housing bottom part (8b), which are connected to each other airtight, the between the housing parts (8a, 8b), a battery cell receiving interior is clamped, which is evacuated by means of a vacuum pump (9).
    公开号:AT511836A4
    申请号:T1409/2011
    申请日:2011-09-29
    公开日:2013-03-15
    发明作者:Kurt Ing Klammler；Michael Ing Koeroesi
    申请人:Avl List Gmbh；
    IPC主号:
    专利说明:

    «I ···· 1 * 36246
    The invention relates to an electrical energy storage device for an electric vehicle, which has 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 in a common housing.
    From DE 10 2009 035463 Al a battery with a plurality of flat substantially plate-shaped battery single cells is known. The battery cells are stacked into a cell stack and surrounded by a battery case. The individual battery cells are formed in frame flat construction with metallic sheets and a frame made of insulating material.
    Also known from WO 2008/048751 A2 is a battery module with a multiplicity of plate-shaped battery cells arranged side by side in a stack, which are accommodated in a housing.
    WO 2010/053689 A2 describes a battery arrangement with a housing and a plurality of lithium-ion cells, which are arranged next to one another. The housing is flowed through for cooling with a thermally conductive, electrically insulating fluid.
    Even small temperature fluctuations in the battery module can form water vapor on the surfaces (metal or plastic) of the components. This condensation in the interior of the battery module adversely affects the life of the battery and the battery module.
    To avoid condensation problems, it is known to manufacture or maintain batteries in a vacuum atmosphere. Furthermore, it is known to arrange batteries in an evacuable container and to change the thermal conductivity to the environment by changing the vacuum or the pressure in the container or between double container walls (JP 10-064 597 A2, JP 07-226 230 A2, EP 0 633 420 A2).
    Furthermore, FR 2 869 722 A1 discloses a lithium-polymer battery with a housing, which housing can be evacuated by a vacuum pump. If the battery housing consists of several parts, these are usually connected to one another by screws. However, screws have the disadvantage that they increase the assembly costs and the weight. Furthermore 'must be kept free to operate the screws mounting space. Another disadvantage is that it comes through the glands to inhomogeneous voltage distribution in the housing.
    The object of the invention is to avoid problems with condensation formation within the housing and to reduce the assembly effort in the simplest possible way.
    According to the invention this is achieved in that the housing has at least two parts which are connected to each other airtight so that between the housing parts a battery cells receiving cavity is clamped, which is evacuated by means of a vacuum pump.
    It when the housing parts are joined together only by the pressure difference between the environment and the cavity is particularly advantageous. The fact that the housing parts are pressed together by the ambient pressure alone, can be largely dispensed with connecting parts such as screws. By evacuating the cavity, two problems with batteries are thus solved in a simple way: On the one hand, condensation and the formation of cavities in the interior of the battery are largely avoided by the evacuation and the cavity. On the other hand, the pressure difference between the cavity and the environment is used to press the housing parts together, wherein further connecting elements can be largely dispensed with. The housing parts are pressed together much more uniformly than would be possible with connecting screws. Thus, voltage peaks in the housing are avoided.
    It is particularly advantageous if the vacuum pump is integrated into the housing. Alternatively, the vacuum pump may also be arranged outside the housing.
    The vacuum pump is thus preferably part of the battery system.
    In a further embodiment of the invention can be provided that the cavity via at least one vacuum line with an auxiliary system of the vehicle, preferably with a vehicle brake system, is connected. The cavity is thus used as a vacuum storage for auxiliary equipment of the vehicle. Thus, at the vehicle level, a separate vacuum accumulator and a separate vacuum pump, for example for the brake system, can be dispensed with.
    The invention is explained in more detail below with reference to FIGS.
    2 shows the energy store in an oblique view from below and FIG. 3 shows the energy store with the housing cover removed in an oblique view from above.
    The energy accumulator 1 formed by a rechargeable battery has a battery pack 2 with a plurality of battery modules 2 a arranged next to one another. Each battery module 2a has inside a not further apparent stack of juxtaposed plate-shaped battery cells (pouch cells), which are pressed by pressure plates 3 together. The pressure plates 3 are connected by screws 4a with side plates 4. In the exemplary embodiment, the battery pack 2 has four battery modules 2a, as shown in FIG.
    In the ceiling area 5a of the energy storage device 1, the battery cells connecting, busbars (not shown) are arranged, for their cooling, a busbar cooling device 6 is provided, which communicates via cooling channels 7 with coolant collector or distributor 7a, 7b. The cooling is preferably carried out by a liquid cooling medium.
    The battery pack 2 is arranged in a housing 8, which has a housing cover part 8a and a housing bottom part 8b.
    The two housing parts 8a and 8b are held together only by negative pressure within the housing 8, wherein a housing seal 8c is arranged between the two housing parts 8a, 8b. In the exemplary embodiment, a vacuum pump 9 is integrated in the housing 8, wherein the vacuum pump 9 is fastened via fasteners 10 on the housing bottom part 8b. 9a, the outlet opening of the vacuum pump 9 is designated. As an alternative to an integrated vacuum pump 9, an external vacuum pump can also be used.
    At least one connection opening 11 for a vacuum line 12 is arranged in the bottom area of the housing bottom part 8b, whereby the vacuum line 12 + + can be led, for example, to a brake booster 13. The vacuum line 12 is connected via hose clamps 14 , 15 with connecting piece on the housing bottom part 8b and 13 connected to the brake booster. As a result, the negative pressure generated within the housing 8 by the vacuum pump 9 can be utilized for braking force assistance.
    The invention is described with reference to a battery pack 2 with pouch cells in a lp circuit. It goes without saying that the invention can also be applied to other batteries with a different type of battery cells, different circuits of the cells and / or other cooling.
    权利要求:
    Claims (5)
    [1]
    1. An electric energy store (1) for an electric vehicle, which has a plurality of electrically interconnected, in particular flat, and substantially plate-shaped battery cells, which in at least one stack next to each other in a common housing (8) are arranged, characterized in that the housing (8) at least two housing parts, preferably a housing cover part (8a) and a housing bottom part (8b), which are connected to each other airtight, in that between the housing parts (8a, 8b) an internal space accommodating the battery cells is clamped, which can be evacuated by means of a vacuum pump (9).
    [2]
    Second energy storage device (1) according to claim 1, characterized in that the Gehäuseteiie (8a, 8b) are compressed only by the pressure difference between the environment and the Hohiraum.
    [3]
    3. Energy storage (1) according to claim 1 or 2, characterized in that the vacuum pump (9) in the housing (8) is integrated.
    [4]
    4. energy store (1) according to one of claims 1 or 2, characterized in that the vacuum pump (9) outside the housing (8) is arranged.
    [5]
    5. energy storage device (1) according to one of claims 1 to 4, characterized in that the interior via at least one vacuum line (12) with a pneumatically actuatable auxiliary system of the vehicle, preferably with a brake booster (13) is connected.

    2011 09 29 Fu / Bt
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    同族专利:
    公开号 | 公开日
    AT511836B1|2013-03-15|
    WO2013045530A3|2013-05-30|
    WO2013045530A2|2013-04-04|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    DE19648353A1|1996-11-22|1998-05-28|Bayerische Motoren Werke Ag|Electrochemical storage battery e.g. for electric vehicle|
    JP2007179946A|2005-12-28|2007-07-12|Fuji Heavy Ind Ltd|Vehicular battery loading structure|
    WO2011051174A1|2009-10-29|2011-05-05|Continental Automotive Gmbh|Battery cell having a gas reservoir|
    DE2416807A1|1974-04-06|1975-10-23|Daimler Benz Ag|THERMAL PROTECTION FOR A VEHICLE ACCUMULATOR|
    IT1264692B1|1993-07-08|1996-10-04|Getters Spa|GETTER COMBINATION SUITABLE FOR REVERSIBLE VACUUM INSULATING SHIRTS|
    JPH07226230A|1994-02-09|1995-08-22|Kubota Corp|Heat insulation container for high temperature battery|
    DE4407156C1|1994-03-04|1995-06-08|Deutsche Automobilgesellsch|Electric storage battery housing for electrically-driven automobile|
    JPH1064597A|1996-08-20|1998-03-06|Shin Kobe Electric Mach Co Ltd|Secondary battery power supply|
    DE19752755C2|1997-11-28|2000-05-18|Rehau Ag & Co|Use of expanded polypropylene for heat protection covers of lead accumulators and heat protection covers|
    JP4301750B2|2001-08-24|2009-07-22|三菱重工業株式会社|Power storage device and management system thereof|
    FR2869722B1|2004-04-28|2012-08-10|Electricite De France|VACUUM PUMP AND VENTILATION SYSTEM|
    US7531270B2|2006-10-13|2009-05-12|Enerdel, Inc.|Battery pack with integral cooling and bussing devices|
    JP2009170222A|2008-01-15|2009-07-30|Toyota Motor Corp|Cooling device and cooling method of lead storage battery, as well as vehicle equipped with such cooling device|
    US20100104927A1|2008-10-29|2010-04-29|Scott Albright|Temperature-controlled battery configuration|
    DE102009008222A1|2009-02-10|2010-08-12|Li-Tec Battery Gmbh|battery cooling|
    DE102009035463A1|2009-07-31|2011-02-03|Daimler Ag|Battery with a large number of plate-shaped battery cells|
    DE102009045271A1|2009-10-02|2011-04-07|Robert Bosch Gmbh|Emergency cooling device|KR102311075B1|2018-04-09|2021-10-07|주식회사 엘지에너지솔루션|Battery Pack Having Pack Housing|
    DE102019201021A1|2019-01-28|2020-08-13|Volkswagen Aktiengesellschaft|Battery with a seal acting by means of a pressure difference|
    DE102019103295A1|2019-02-11|2020-08-13|Fazua Gmbh|Housing with at least a first and a second housing part|
    法律状态:
    2019-05-15| MM01| Lapse because of not paying annual fees|Effective date: 20180929 |
    优先权:
    申请号 | 申请日 | 专利标题
    ATA1409/2011A|AT511836B1|2011-09-29|2011-09-29|ELECTRIC ENERGY STORAGE FOR AN ELECTRIC VEHICLE|ATA1409/2011A| AT511836B1|2011-09-29|2011-09-29|ELECTRIC ENERGY STORAGE FOR AN ELECTRIC VEHICLE|
    PCT/EP2012/069041| WO2013045530A2|2011-09-29|2012-09-27|Electrical energy store for an electric vehicle|
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