• 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 electrically operated 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 service life of the electrical energy store (1), it is provided that at least one collecting strip (15) and / or at least one preferably labyrinth-shaped capillary structure (13) for collecting condensate is arranged inside the housing (8).
    公开号:AT512016A1
    申请号:T1328/2011
    申请日:2011-09-15
    公开日:2013-04-15
    发明作者:Kurt Ing Klammler；Johannes Dipl Ing Fh Rieger；Reinhard Dipl Ing Glanz；Martin Dipl Ing Fh Michelitsch；Michael Ing Koeroesi；Harald Dipl Ing Fh Stuetz；Edward P Yankoski；Mauro Aiolfi
    申请人:Avl List Gmbh；
    IPC主号:
    专利说明:

    The invention relates to an electrical energy store for an electrically operated 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 probes, 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.
    KR 2008-0053717 A discloses a device for controlling ddr Tämpefätdf j * · and the humidity in a hybrid vehicle. In this case, conditioned purge air is introduced into the housing of the battery. The air conditioning of the scavenging air takes place in dependence on temperature and humidity sensors in the housing and in the scavenging air supply channel, wherein the operation of an air conditioning system, a heating device and an electric blower is regulated by an electronic control unit. The disadvantage is that a high sensory and metrological effort is required for dehumidification.
    Furthermore, DE 1 921 618 A discloses a method for drying the electrodes in containers during battery production, wherein a desiccant flows through the container having the electrodes.
    Furthermore, DE 30 44 741 CI describes a cooling device for a liquid-cooled electric accumulator with a dipping into the liquid, protruding through the lid of the accumulator housing heat dissipation. The heat pipe is internally provided in part with a capillary structure for the return transport of the condensed heat transfer medium from the heat emitting point to the heat receiving point.
    The object of the invention is to avoid problems with condensate formation within the housing of the battery in the simplest possible way.
    According to the invention this is achieved in that within the housing at least one collecting bar and / or at least one preferably labyrinthine shaped capillary structure is arranged for collecting condensate, wherein preferably the collecting bar and / or the capillary structure opens into a collecting container.
    When condensation forms due to temperature and / or pressure differences, the condensate is purposefully collected in the collection container via the collection strip and / or the capillary structure, which condensate can be emptied if necessary. As a result, there can be no damage to the battery itself and the environment due to electric shocks or the like.
    The collecting container may be arranged, for example, within the housing in the bottom region thereof. 3
    Through the collecting bar and / or the Kapiilarstruktur formed for example by a Pordn SCifwieiSShitte * »rod, tube or a sponge structure is a targeted dehumidification particular of the relevant points in the battery module and the entire battery pack by the capillary action. Depending on the temperature and pressure conditions different materials can be used. Due to the shape of the housing consisting of a one-part or multi-part plastic part, zones with increased condensation, such as, for example, cooling of the battery contact points, are primarily formed with a capillary structure. The condensate is drained by gravity into the receptacle integrated into the container.
    At least one capillary structure and / or at least one collecting strip advantageously starts from a busbar cooling device, wherein preferably the capillary structure contacts the busbar cooling device.
    The collecting strip is preferably formed by at least one groove or groove formed in the housing, wherein the collecting strip directly adjoins the capillary structure, wherein preferably the collecting strip can be arranged between capillary structure and housing. This allows a particularly effective drainage of condensation.
    The emptying of the collecting container can preferably be carried out as part of a routine vehicle service, wherein the collecting container can be changed or the condensed water can be discharged via a closable emptying opening. It is advantageous if the collecting container has a communicating with the electronic control unit level sensor to determine the level in the collecting container and optionally give the driver appropriate warnings. If the collecting container reaches a defined level, it must be emptied by a specialist, for example as part of a vehicle service.
    In order to enable easy cleaning, it is particularly advantageous if the collecting strip and / or the capillary structure can be connected to an air purging device. The flushing of the collection strip and / or the Kapiilarstruktur can be done as part of the vehicle service. 4 ♦ ··· ·· # ·
    The sump is sealed to the body so that leakages of water are reliably prevented.
    The invention is explained in more detail below with reference to FIGS.
    2 shows the energy store in an oblique view from below, FIG. 3 shows the energy store in a side view, FIG. 4 shows the energy store in a partial section according to lines IV-IV in FIG 3, FIG. 5 the detail VV of FIG. 4,
    6 shows the energy store in a further oblique view from above, FIG. 7 shows the detail VII from FIG. 6, FIG. 8 shows the energy store in a further oblique view from below, FIG. 9 shows the detail IX from FIG. 8, FIG 11 shows the detail XI from FIG. 10, FIG. 12 shows the energy store with the housing bottom removed in an oblique view from below, FIG. 13 shows the detail XIII from FIG. 12, FIG. 14 shows an interior view 15, the detail XV from FIG. 14, FIG. 16 an interior view of the housing cover, and FIG. 17 a battery pack of the energy accumulator in an oblique view.
    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. 17.
    In the ceiling region 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. In the bottom region 5b of the energy accumulator 1, in particular in the housing bottom part 8b, at least one emptying opening 9, which can be closed by a closure part 9a, is integrated with a collecting container wall W1, which is sealed in the housing bottom part 8b. arranged, wherein the housing bottom part 8b is formed sloping down to the discharge opening 9 (Fig. 8, 9).
    In the housing cover part 8 closable openings 12 for air scavenging devices are arranged via closure lid 11 (FIG. 4).
    In zones with increased condensation, such as battery contact points, a capillary structure 13 is formed in each case. In the exemplary embodiment, the capillary structures 13 extend on or in the inner wall of the housing 8 between the region of the busbar cooling device 6 in the housing cover part 8a and the housing bottom part 8b. The capillary structure 13 is in contact with the upper portion of the busbar cooling device 6. If necessary, it may also be in contact with the lower portion of the busbar cooling device 6. In the other places, there is no direct contact between the capillary structure and the component surfaces. The contact area between the busbar cooling device 6 and the capillary structure 13 is designated by reference numeral 14. Due to the evaporation of the condensate, the other locations are secondarily dehumidified or sucked up by the capillary structure 13 along the entire battery pack 2.
    Depending on the variation of the battery pack 2 and / or the battery modules 2 a, the capillary structures 13 may be designed differently depending on the shape and position (transverse or longitudinal to the cooling device 6).
    The labyrinth channels having Kapällarstrukturen 13 may be formed by capillary materials such as rods, tubes, sponges, or the like with the finest pore structure. The capillary structures 13 are attached to the inside of the housing 8. This results in a targeted dehumidification of the entire battery pack 2 by the capillary action. Depending on pressure and temperature conditions, different materials can be used.
    Due to the shape of the housing 8, which may be formed as a one, two or more layers plastic component, zones with increased condensation, such as battery contact points, may be formed primarily with capillary structures 13.
    The housing 8 is designed with collecting strips 15 formed in the housing cover part 8a and housing bottom part 8b, for example, by means of split channels. The collecting strips 6 15 may be formed by gaps or gaps between the Kapillarstrufct ^ 4n # l, Tih * d · * the housing 8.
    The condensed water is taken up by the capillary structures 13 and directed into the collecting strips 15, which divert it by gravity to the bottom region 5b and into the collecting container 10.
    In a service, the capillary structures 13 and the collecting bars 15 are flushed via the openings 12 with fresh air. The collecting container 10 can also be changed or emptied as part of a service as needed. In particular, the collecting container 10 may have a filling level sensor 16, which communicates with the electronic control unit of the vehicle and forwards corresponding information to the driver or service personnel.
    Through the targeted discharge of condensate in a collecting container 10 condensation caused damage to the energy storage 1 or a risk to persons can be reliably avoided by electric shocks or the like.
    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 (13)
    [1]
    7 ♦ ················································································································································································································································· an electrically powered vehicle having 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), characterized in that within the housing (8) at least one Is arranged collecting strip (15) and / or at least one preferably labyrinth-shaped capillary structure (13) for collecting condensate.
    [2]
    Second energy store (1) according to claim 1, characterized in that the collecting strip (15) and / or the capillary structure (13) opens at least into a collecting container (10).
    [3]
    3. energy storage device (1) according to claim 2, characterized in that the collecting container (10) in the bottom region (5b) of the energy store (1), preferably in the housing bottom part (8b) is arranged, particularly preferably the housing bottom part (8b) for .Auffangbehälter (10) is sloping down.
    [4]
    4. energy storage device (1) according to one of claims 2 or 3, characterized in that the collecting container (10) in a closure part (9a) of an emptying opening (9) is integrated.
    [5]
    5. energy storage device (1) according to one of claims 1 to 4, characterized in that the collecting container (10) has a level sensor (16).
    [6]
    6. energy store (1) according to one of claims 1 to 5, characterized in that the collecting container (10) has a preferably closable emptying opening.
    [7]
    7. Energy storage (1) according to one of claims 1 to 6, characterized in that the collecting container (10) is sealed to the preferably made of plastic housing (8). «T ···························································· ·
    [8]
    8. energy storage device (1) according to one of claims 1 to 7, dadufrctw ^! ] *; ** j · β > Ϊ characterized in that the collecting container (10) is arranged exchangeably in the housing (8).
    [9]
    9. Energy store (1) according to one of claims 1 to 8, characterized in that the Sammelieiste (15) and / or the capillary structure (13) is fluidly connected to an air purging device, wherein preferably the housing (8) at least one closable opening 12 for Having connection of an air purifier,
    [10]
    10. energy store (1) according to one of claims 1 to 9, characterized in that the capillary structure (13) is formed by a pore-containing rod structure, tube structure or a sponge structure.
    [11]
    11. energy store (1) according to one of claims 1 to 10, characterized in that at least one Kapiliarstruktur (13) and / or at least one collecting bar (15) of a busbar cooling device (6) emanates, preferably the capillary structure (13) contacted the bus bar cooling device (6).
    [12]
    12. energy storage device (1) according to one of claims 1 to 11, characterized in that the collecting strip (15) is formed by at least one groove or groove, wherein preferably the collecting strip (15) in the housing (8) is formed.
    [13]
    13. energy storage device (1) according to one of claims 1 to 12, characterized in that the collecting strip (15) directly adjacent to the capillary structure (13), wherein preferably the collecting strip (15) between the capillary structure (13) and housing (8) is. 2011 09 15 Fu / Bt

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    同族专利:
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    引用文献:
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    WO2011160888A1|2010-06-22|2011-12-29|Sb Limotive Company Ltd.|Battery comprising a moulded body made of a porous, moisture-absorbing material for transporting moisture out of the battery housing|DE102014225845A1|2014-12-15|2016-06-16|Volkswagen Aktiengesellschaft|Battery assembly and motor vehicle with a battery assembly|US3499228A|1968-05-02|1970-03-10|Esb Inc|Method of drying electrodes in battery containers|
    DE3044741C1|1980-11-27|1982-06-16|Daimler-Benz Ag, 7000 Stuttgart|Cooling device for a liquid-filled electrical accumulator|
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    法律状态:
    2019-05-15| MM01| Lapse because of not paying annual fees|Effective date: 20180915 |
    优先权:
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    ATA1328/2011A|AT512016B1|2011-09-15|2011-09-15|ELECTRIC ENERGY STORAGE|ATA1328/2011A| AT512016B1|2011-09-15|2011-09-15|ELECTRIC ENERGY STORAGE|
    PCT/EP2012/067754| WO2013037786A1|2011-09-15|2012-09-12|Electrical energy accumulator|
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