EP2529428A1 - Accumulateur doté d'un dispositif de régulation de température des éléments - Google Patents

Accumulateur doté d'un dispositif de régulation de température des éléments

Info

Publication number
EP2529428A1
EP2529428A1 EP11701405A EP11701405A EP2529428A1 EP 2529428 A1 EP2529428 A1 EP 2529428A1 EP 11701405 A EP11701405 A EP 11701405A EP 11701405 A EP11701405 A EP 11701405A EP 2529428 A1 EP2529428 A1 EP 2529428A1
Authority
EP
European Patent Office
Prior art keywords
cooling
cells
heating device
housing
accumulator
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP11701405A
Other languages
German (de)
English (en)
Inventor
Stefan Roepke
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Samsung SDI Battery Systems GmbH
Original Assignee
Magna E Car Systems GmbH and Co OG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Magna E Car Systems GmbH and Co OG filed Critical Magna E Car Systems GmbH and Co OG
Publication of EP2529428A1 publication Critical patent/EP2529428A1/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/60—Heating or cooling; Temperature control
    • H01M10/61—Types of temperature control
    • H01M10/613—Cooling or keeping cold
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/60—Heating or cooling; Temperature control
    • H01M10/61—Types of temperature control
    • H01M10/615—Heating or keeping warm
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/60—Heating or cooling; Temperature control
    • H01M10/64—Heating or cooling; Temperature control characterised by the shape of the cells
    • H01M10/647—Prismatic or flat cells, e.g. pouch cells
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/60—Heating or cooling; Temperature control
    • H01M10/65—Means for temperature control structurally associated with the cells
    • H01M10/655—Solid structures for heat exchange or heat conduction
    • H01M10/6554—Rods or plates
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/60—Heating or cooling; Temperature control
    • H01M10/65—Means for temperature control structurally associated with the cells
    • H01M10/655—Solid structures for heat exchange or heat conduction
    • H01M10/6554—Rods or plates
    • H01M10/6555—Rods or plates arranged between the cells
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/60—Heating or cooling; Temperature control
    • H01M10/65—Means for temperature control structurally associated with the cells
    • H01M10/655—Solid structures for heat exchange or heat conduction
    • H01M10/6556—Solid parts with flow channel passages or pipes for heat exchange
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
    • H01M50/204—Racks, modules or packs for multiple batteries or multiple cells
    • H01M50/207—Racks, modules or packs for multiple batteries or multiple cells characterised by their shape
    • H01M50/209—Racks, modules or packs for multiple batteries or multiple cells characterised by their shape adapted for prismatic or rectangular cells
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
    • H01M50/271—Lids or covers for the racks or secondary casings
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/10—Energy storage using batteries

Definitions

  • the invention relates to an accumulator comprising a housing, a plurality of voltage-generating cells arranged in the housing, a cooling / heating device and heat conduction devices arranged between the cells, which are thermally coupled / connected to the said cooling / heating device.
  • Accumulators are usually constructed from a plurality of voltage-generating cells in order to provide a required voltage, a required current and / or a required capacity.
  • a required voltage a required current and / or a required capacity.
  • several hundred cells are often interconnected. When loading and unloading the cells are therefore correspondingly high
  • an accumulator can also be heated by supplying heat if it is to be operated at low outside temperatures.
  • DE 198 29 293 A1 discloses for this purpose a cooling device which is in communicating connection with an inner space of an airtight housing via a connecting line, in which a plurality of battery cells are hermetically sealed
  • the cooling device and the interior of the airtight housing are filled with high boiling point coolant.
  • the coolant absorbs heat developed by the plurality of battery cells in the airtight housing to evaporate.
  • the vaporized coolant moves upward toward the
  • Cooling device and is condensed in the cooling device. Then, the condensed refrigerant around the battery cells returns due to its own weight.
  • the battery lines are uniformly and effectively cooled so that they have no change or difference in temperature.
  • the battery case is closed directly by the cooling device.
  • the disadvantage here is that for efficient cooling of the cells intermediate spaces must be present between them, in which the coolant can circulate.
  • the resulting battery is therefore relatively bulky in relation to its capacity.
  • Cooling device are arranged.
  • extensions of the cell housing are often bent at right angles in order to have a sufficiently large area available for an acceptable heat transfer between the cells and a cooling device.
  • This composite consisting of the cells and the cooling device or the optional heat conducting plates is then installed in a housing. For example, such
  • the resulting accumulator is relatively bulky, since not only the voltage-generating cells themselves, but also a cooling device provided for this is arranged in the battery case.
  • the weight of the resulting accumulator is relatively bulky, since not only the voltage-generating cells themselves, but also a cooling device provided for this is arranged in the battery case.
  • the weight of the resulting accumulator is relatively bulky, since not only the voltage-generating cells themselves, but also a cooling device provided for this is arranged in the battery case.
  • the object of the invention is therefore to provide an improved accumulator, in particular one which has a reduced volume or a reduced weight in relation to its capacity.
  • the invention is achieved by an accumulator of the type mentioned, in which at least a portion of the housing is designed as a cooling / heating device.
  • an accumulator that is both lighter and smaller arises as the heat conduction devices arranged between the cells provide a more compact structure Dimensions for a good heat dissipation or heat supply. At the same time is the
  • the cooling / heating not only serves to temper the cells, but also forms part of the battery case.
  • the cooling / heating device thus fulfills a double benefit.
  • condensation that may form in the cooling operation on the outside of the cooling / heating device easily drain on the outside of the case and does not have specially designed for this purpose
  • the accumulator according to the invention is therefore particularly suitable for mobile use, for example in the automotive industry, play in the small size and low weight a central role.
  • the application is not limited to automotive engineering. Rather, the accumulator can also be used in shipbuilding and in aircraft. Of course, the accumulator according to the invention can also be used in stationary operation.
  • a “housing of the rechargeable battery” is understood to mean a device which encloses at least the voltage-generating cells
  • the cells are enclosed on all sides, but, for example, a housing in the form of an open-topped box is also conceivable at least in sections, the outermost boundary of the accumulator.
  • a “thermal coupling” is understood to mean an arrangement of components, specifically an arrangement of heat-conducting devices and a cooling / heating device, which permits a heat transfer in a targeted or planned manner
  • a “thermal coupling” is not
  • the heat-conducting devices project vertically beyond the cells in the region of the fold.
  • the heat-conducting devices can also serve, in addition to their heat-conducting function, to align the cells in the housing with respect to one another. For this purpose, the protruding over the cells part of the heat conducting devices,
  • a heat conducting device is bonded to at least one cell.
  • prefabricated units can be formed, which are then inserted as needed in a housing or inserted and installed to an accumulator.
  • the mechanical stability of the accumulator is improved.
  • An accumulator according to the invention is also advantageous if it comprises a pressure plate which is provided for pressing the cells and the heat-conducting devices against each other. As a result, good heat transfer is achieved between the cells and the heat-conducting devices, even if the cells and the heat-conducting devices are not connected to each other (e.g., adhesively bonded or welded). In addition, it prevents that an existing connection dissolves or the cells and
  • Heat conduction devices in the housing reciprocate when high accelerations act on the accumulator.
  • a particularly advantageous variant of a rechargeable battery according to the invention is given if it comprises a cover plate which is intended to be placed on the cells and has a tapered, in particular wedge-shaped ribs on a side facing the cells.
  • a cover plate is placed on the formed of cells and heat conduction package, the one hand, the wedge-shaped ribs on the one hand Cells or rondleit drivingen positioned to each other, on the other hand optionally also a holder for an electronic circuit, for example a
  • the housing is closed at the top by these cover plates or at least substantially closed.
  • the cover plate takes on another function, namely that it presses the heat conducting devices against the housing, which mechanically stabilizes the accumulator on the one hand, but in consequence, despite dimensional tolerances of the components of the
  • Accumulator ensures good heat transfer to the cooling / heating device, as soon as it is placed on the housing.
  • thermoly and / or electrically insulating layer (for example made of plastic) is provided between the heat-conducting devices and the cooling / heating device.
  • the heat conducting devices are inserted in the region of the cooling / heating device in this.
  • the cooling / heating device for example, slots in which the heat conducting devices are inserted. In this way, a good heat transfer between the cooling / heating device and the heat conducting devices can be created, for example by sufficient depth of the slot, without the latter having to be bent in order to increase the contact surface to the cooling / heating device.
  • the cells are thermally coupled / connected to said cooling / heating device.
  • the heat transfer between the cooling / heating device and the cells can be further improved, since this is done not only indirectly via the heat conducting devices, but also directly.
  • the cooling / heating device forms a side part and / or a lid and / or a bottom of the housing, in particular a complete side part and / or a complete lid and / or a complete bottom.
  • the cooling / heating device forms a side part and / or a lid and / or a bottom of the housing, in particular a complete side part and / or a complete lid and / or a complete bottom.
  • Condensation are particularly pronounced in this variant of the invention and increase with the proportion of installed by the cooling / heating surface.
  • a "complete" side part, cover and / or bottom is to be understood as meaning a component (ie a cooling / heating device) which completely or at least substantially (a) forms the lateral, upper and / or lower boundary of the housing.
  • a component ie a cooling / heating device
  • other components for example a frame, may also overlap the cooling / heating device inside and / or outside.
  • FIG. 1 shows a unit formed from two accumulator cells and a heat conducting sheet
  • FIG. 3 shows an accumulator housing with several inserted accumulator cells
  • FIG 4 as Figure 3 only with additionally mounted pressure plate.
  • Figure 7 is a detail view of a cover plate
  • FIG. 8 shows a section through the accumulator according to FIG. 5;
  • position indications such as “top”, “bottom”, “lateral”, “horizontal”, “vertical” and the like refer to the illustrated position of the accumulator or to a normal position of use of the accumulator to adjust the location information accordingly.
  • Figures 1 and 2 show an arrangement comprising two cells 1 with cell terminals 2, as well as an interposed and provided as a heat conducting device
  • Fig. 1 shows the arrangement in an oblique view
  • Fig. 2 in plan view.
  • the heat conducting 3 is bent in this example on both sides by 90 °, so that it can be coupled on both sides well after installation in a housing to a cooling / heating. This is advantageous, but not mandatory. It is also possible that the
  • Fig. 1 is also good to see that the heat-conducting 3, the cells 1 also extends beyond the bottom. In this way it can be used for example in rails, which are provided in the housing of the accumulator (see also Fig. 3). Thus, the cells 1 and the heat conducting plates 3 are optimally positioned in the housing.
  • FIGS. 1 and 2 now shows a housing 4, in which a plurality of the units shown in FIGS. 1 and 2 are used, wherein the heat conducting plates 3 are used in laterally arranged rails. It is also easy to see that the cell connections 2 are all directed upwards so that they can be interconnected well, for example with the aid of a cell connection board (CCB). Furthermore, it is clearly visible that not only the top of the housing 3, but also the two
  • FIG. 4 now shows how the cells 1 and the heat conducting sheets 3 are pressed against one another.
  • a pressure plate 5 is inserted and screwed into the housing 4.
  • the batteries can be well adapted to the particular application by more times, sometimes less cells 1 are inserted into the housing 4.
  • the arrow in Fig. 4 symbolizes the direction of the pressure force by the pressure plate. 5
  • FIGS. 5 and 6 now show how the cells 1 can also be aligned with one another on their upper side (FIG. 5 in an overview oblique view, FIG. 6 in a detail oblique view).
  • a cover plate 6 is placed on the cell stack. This wedge-shaped ribs on the underside of the cover plate 6 ensure a correct
  • the cover plate 6 also has slots through which the cell terminals 2 protrude after placement of the cover plate 6 therethrough.
  • FIG. 7 shows a cover plate 6 in detail.
  • wedge-shaped ribs on the underside of the cover plate 6 can be seen.
  • pin-shaped projections on the top of the cover plate 6, on which later the cell connection board is placed in this configuration, the cover plate 6 mutatis mutandis will be seen as a support plate).
  • the pins can also protrude through recesses in the cell connection board, which fixes them simply by attaching spring washers on the cover plate 6 can be. In order for the cell connection board to be properly spaced from the cover plate 6, said pins may also be offset.
  • the thickness of prismatic cells 1 varies in the range of +/- 3%. If a cell stack with a large number of cells 1 is to be installed, the result is a tolerance range of several
  • the cover plates 6 and the cell connection board are mounted so that the center of the cell connection board comes to rest over the center of the cell stack.
  • positional deviations of the cell contacts 3 to their terminals on the cell connection board can be kept small.
  • FIG. 8 now shows a section through the accumulator at the level of a cell 1.
  • the cell 1 can be seen in front view and the heat-conducting sheet 3, specifically its bends, in section.
  • the cover plate 6 is already mounted in the illustration shown.
  • the cover plate 6 not only aligns the cells 1 with each other by means of wedge-shaped ribs, but also presses the heat-conducting sheet 3 against the housing 4.
  • the cover plate 6 thus assumes a multiple function: it directs the cells 1
  • an intermediate plate 7 is provided between the cherriesleitblechen 3 and the housing 4, which consists for example of elastic material and thus provides for a certain length compensation, or compensation of component tolerances.
  • Fig. 9 shows the accumulator in a further construction progress, in which the housing 4 is laterally closed by two side walls 8, which simultaneously form a cooling / heating device.
  • On the side wall 8 is a channel 9 for a heat transfer medium, which is guided in loops over the side wall 8.
  • the coolant connection of the cooling / heating device is located outside of the housing 4 by this type of mounting, so that there is no passage point of a coolant line through the housing 4, which would have to be sealed. Due to the dual function of the cooling / heating device as
  • Housing cover falls away a housing wall, resulting in a material and space savings.
  • condensate water that may be formed in the cooling operation on the outside of the cooling / heating device must not be removed from the housing 4, but can easily run on the outside of the housing.
  • Fig. 10 shows how Fig. 8 shows a section through the accumulator, but with mounted side wall 8. Good to see is also the channel 9.
  • the thermal coupling between theticianleitblechen 3 and the side wall 8, which is a cooling - / Heating device forms / includes produced by body contact between the two components.
  • a thermal compound between the heat conducting 3 and the side wall 8 can be applied.
  • an insulating plate is provided between the heat conducting plates 3 and the side wall 8, which is electrically insulated. In this way it can be prevented that a dangerous electrical voltage is applied to the side wall 8.
  • the insulating plate may additionally or alternatively also be thermally insulating. The thermal insulation ensures that within theticianleitbleche 3 and within the cooling / heating device 8 no strong
  • FIGS. 1 to 10 are partly simplified representations. In reality, an accumulator according to the invention may also deviate from the illustration, in particular comprise additional components not shown here. Finally, it is noted that the representations are not necessarily to scale and that proportions of real components may also differ from the proportions of the illustrated components. Also, the heat conducting plates 3 shown in the figures can be equivalently replaced by other heat conducting devices, for example, against heat conduction networks,

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Secondary Cells (AREA)

Abstract

L'invention concerne un accumulateur comportant un boîtier (4), plusieurs éléments (1) générateurs de tension disposés dans le boîtier (4), un dispositif de refroidissement/chauffage (8) et des dispositifs caloporteurs (3) disposés entre les éléments (1), thermiquement liés/couplés au dispositif de refroidissement/chauffage (8). Selon l'invention, au moins une partie du boîtier (4) est en outre conçue comme dispositif de refroidissement/chauffage (8).
EP11701405A 2010-01-28 2011-01-28 Accumulateur doté d'un dispositif de régulation de température des éléments Withdrawn EP2529428A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US29924910P 2010-01-28 2010-01-28
PCT/EP2011/051254 WO2011092305A1 (fr) 2010-01-28 2011-01-28 Accumulateur doté d'un dispositif de régulation de température des éléments

Publications (1)

Publication Number Publication Date
EP2529428A1 true EP2529428A1 (fr) 2012-12-05

Family

ID=43857660

Family Applications (1)

Application Number Title Priority Date Filing Date
EP11701405A Withdrawn EP2529428A1 (fr) 2010-01-28 2011-01-28 Accumulateur doté d'un dispositif de régulation de température des éléments

Country Status (3)

Country Link
US (1) US20120301773A1 (fr)
EP (1) EP2529428A1 (fr)
WO (2) WO2011092304A1 (fr)

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CN102569935B (zh) * 2012-02-15 2015-06-24 国家电网公司 一种用于软包装电池组的散热铝板
CN108054462A (zh) * 2014-11-10 2018-05-18 深圳市大疆创新科技有限公司 电池及其热管理装置、以及具有该电池的uav
CN108336286A (zh) * 2018-03-26 2018-07-27 珠海格力电器股份有限公司 一种大软包锂离子电池及其制备方法
CN108470959A (zh) * 2018-03-28 2018-08-31 精进电动科技股份有限公司 一种动力电池包热管理总成
FR3083007B1 (fr) * 2018-06-25 2024-03-22 Zodiac Aero Electric Dispositif de refroidissement et de chauffage pour batterie et batterie incorporant un tel dispositif
US20200036065A1 (en) * 2018-07-24 2020-01-30 Michael Wang High-power battery pack using graphite material for heat dissipation
KR20210011639A (ko) * 2019-07-23 2021-02-02 에스케이이노베이션 주식회사 이차전지 및 이를 포함하는 배터리 모듈
DE102020204637A1 (de) * 2020-04-09 2021-10-14 Mahle International Gmbh Batterie

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EP2065963A2 (fr) * 2007-11-29 2009-06-03 Sanyo Electric Co., Ltd. Système de batterie refroidi via un agent de refroidissement
DE102007063179A1 (de) * 2007-12-20 2009-06-25 Daimler Ag Batterie als Flachzellenverbund mit einer Wärmeleitplatte
EP2148385A1 (fr) * 2008-07-24 2010-01-27 Behr GmbH & Co. KG Accumulateur d'énergie électrique

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Also Published As

Publication number Publication date
US20120301773A1 (en) 2012-11-29
WO2011092305A1 (fr) 2011-08-04
WO2011092304A1 (fr) 2011-08-04

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