WO2012110168A1 - Élément de batterie - Google Patents

Élément de batterie Download PDF

Info

Publication number
WO2012110168A1
WO2012110168A1 PCT/EP2011/074265 EP2011074265W WO2012110168A1 WO 2012110168 A1 WO2012110168 A1 WO 2012110168A1 EP 2011074265 W EP2011074265 W EP 2011074265W WO 2012110168 A1 WO2012110168 A1 WO 2012110168A1
Authority
WO
WIPO (PCT)
Prior art keywords
battery cell
housing
spring element
end portion
rch
Prior art date
Application number
PCT/EP2011/074265
Other languages
German (de)
English (en)
Inventor
Stefan Pfeiffer
Kai Kuhlmann
Thomas Kretschmar
Original Assignee
Robert Bosch Gmbh
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 Robert Bosch Gmbh filed Critical Robert Bosch Gmbh
Publication of WO2012110168A1 publication Critical patent/WO2012110168A1/fr

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
    • H01M10/64—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
    • H01M10/6555—Rods or plates arranged between the cells
    • 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 a battery cell according to the preamble of the independent claim.
  • a battery or a battery system, such as in hybrid or
  • Electric vehicles usually consists of several battery modules, which in turn are composed of individual battery cells (for example, lithium-ion battery cells).
  • a single battery cell has a housing and electrical storage elements (also referred to as galvanic cells or simply cells) arranged in the housing.
  • electrical storage elements also referred to as galvanic cells or simply cells
  • the heat generated during the charging and discharging of the battery cell by current flow loss must be dissipated by cooling. Due to the sometimes high power density high demands are placed on the cooling.
  • a battery is known from DE 10 2007 063 190 A1, in which the heat dissipation from the battery is ensured by a temperature control unit designed as a cooling plate.
  • This cooling plate contains recesses comparable to a cooling fin, wherein the battery cells are receivable in the recesses.
  • the Heat transfer between battery cell and cooling plate ensures and ensures the fixation of the battery cell within the recess of the heat sink.
  • the battery cell can be fixed in the recess with the aid of a U-shaped insert, which in addition has good thermal conductivity in order to produce good heat transfer between the battery cell and the heat sink.
  • a disadvantage of this device is that the battery cell is not in direct contact with the cooling plate and requires heat transfer as well as fixation of the battery cell within the recess of the heat sink of an auxiliary device in the form of a potting compound located outside the housing or an insert located outside the housing. Missing the thermally conductive potting compound or the thermally conductive insert, there is neither a good heat transfer from the battery cell to the cooling plate still sufficient fixation of the battery cell in the recess of the cooling plate instead.
  • the battery cell according to the invention with the characterizing part of claim 1 has the advantage that it can be easily connected to a heat sink and is in direct contact with it, whereby the heat can be removed highly efficiently from the battery.
  • the housing includes a spring element which exerts an outwardly directed force on at least a first portion of the housing.
  • a spring element which exerts an outwardly directed force on at least a first portion of the housing.
  • an outward bulge of the housing of the battery cell is effected by the outwardly directed force of the spring element.
  • a heat sink is used which has recesses. In these recesses is the
  • connection between battery cell and heat sink is achieved. Furthermore, it is advantageous that the spring element is arranged within the housing and does not protrude from this. This eliminates the need to lavishly seal the battery cell at the point of passage of the spring element or the
  • the first portion, on which the spring element exerts an outward force a first end portion of the housing.
  • the battery cell is advantageously inserted with the first end portion in recesses of a heat sink.
  • the spring element is supported on opposite housing walls.
  • the opposite housing walls on inwardly located holding elements over which the spring element is supported.
  • a cooling baffle is arranged between at least two storage elements, wherein the spring element is part of theisserleitblechs.
  • Cooling baffle can be dissipated excess heat that arises during charging and discharging of the battery.
  • the heat is transferred from theméleitblech to the spring element. From this, the heat is transferred to the housing and finally delivered to the heat sink, whereby an efficient cooling effect is ensured.
  • the spring element is within the first end portion of the
  • the circular or circular-segment-shaped shape of the spring element is particularly easy to produce by the corresponding bending of thedeleitblechs.
  • a uniformly distributed, outwardly directed force is caused on the first portion of the housing due to the circular or circular segment-shaped design of the spring element.
  • the cooling baffle has several, the spring element forming
  • Subdivision of thedeleitblechs in individualdeleitblechabitese is effected by simply slit-shaped cutting of thedeleitblechs. If the individualdeleitblechabitese bent in alternating order in the opposite direction, the spring element is formed. This type of direct production of the spring element from the cooling baffle is easy to do without much material and also cost.
  • thedeleitblechabitese are bent so that they rest tangentially on the housing. Due to the tangential abutment of thedeleitblechabitese a good heat transfer from the spring element to the housing and finally ensured by the housing on the heat sink. Furthermore, a selective power transmission from the spring element to the housing wall, whereby the latter could be damaged, avoided.
  • the housing has a smaller width in the first end section than in the second end section. This taper within the first end portion of the battery allows a plurality of battery cells can be tightly fitted next to each other in designated recesses of a heat sink and clamped there. It is thus an advantageous use of space within a battery module possible.
  • FIG. 1 shows a sectional view of a battery cell.
  • Figure 2 shows a perspective view of adeleitblechs.
  • FIG. 3 shows a plan view of a slotted cooling guide plate.
  • Figure 4 shows a perspective view of adeleitblechs
  • FIG. 5 shows a further schematic illustration of a battery cell and a heat sink.
  • FIG. 6 shows a further schematic representation of two battery cells and heat sinks arranged next to one another.
  • FIG. 1 shows a first embodiment of the invention, a battery cell 11 in a sectional view.
  • the battery cell 11 is substantially rectangular and flat and has a small thickness.
  • a spring element 16 located within the housing 12, a spring element 16.
  • the spring element 16 is as
  • Battery cell 11 is arranged exercises. To avoid that Spring element 16 moves spatially due to the spring force, the opposite housing walls 17, 18 have inner holding elements 19, 20, which are embodied for example in the form of bulges, on which the spring element 16 is spatially fixed or supported.
  • the battery cell 11 is inserted with the end portion 29 in a heat sink 13, which has one or more receptacles 14, for example in the form of a cooling fin. Due to the spring force of the spring element 16, the housing 12 of the battery cell 11 bulges in the
  • FIG. 2 shows, as a further exemplary embodiment of the invention, a cooling guide plate 21, the spring element 16 being part of the cooling guide plate 21.
  • Thedeleitblech 21 is bent on one side circular or circular segment.
  • the cooling guide plate 21 is located with the flat portion 33 of Figure 2 between two or more memory elements 24, 25 (not shown here), whereas the spring element 16 on the inside of the Housing 12 tangentially to the housing wall 17, 18 is applied.
  • the spring element with the circular or circular segment-shaped spring element 16 exerts an outwardly directed force on an end portion 29 of the housing 12 of the battery cell 11.
  • FIG. 3 shows, as a further exemplary embodiment of the invention, a cooling guide plate 21 which has a plurality of cooling guide plate sections 27 forming the spring element 16.
  • Thedeleitblechabites 27 are prepared by cutting theisserleitblechs 21 by slotted incisions 26 are made in the cooling baffle 21.
  • Figure 4 shows a further embodiment of the invention, thedeleitblech 21 of Figure 4, wherein thedeleitblechabête 27 are bent in alternating order in the opposite direction.
  • the bentdeleitblechabitese 27 are tangential on the inside of the housing on the opposite
  • FIG. 5 shows a further embodiment of the invention, a battery cell 11 in a lateral view.
  • the battery cell 11 is substantially rectangular and flat and has a small thickness.
  • a cooling guide plate 21, which is arranged between the storage elements 24, 25, is located within the housing 12.
  • a spring element 16 is part of thedeleitblechs 21, wherein the spring element comparable to Figure 4deitblechabête 27 which are bent in alternating order in each opposite direction or designed as a circular segment curved sheet (not here
  • the spring element 16 touches the housing 12 tangentially on the inside of the housing 12 and exerts an outwardly directed force on it in a first section 15, which represents a first end section 29 of the housing 12 of the battery cell 11. Will the battery cell 11 with the first
  • End portion 29 inserted into a heat sink 13 having receptacles 14 similar to a cooling fin, so the first end portion 29 corresponds to the housing bottom 22.
  • the first end portion 29 is opposite to a second end portion 30 which corresponds to the housing cover 23.
  • Housing cover 23 is in contact with the cooling guide plate 21, so that a force with which the second end portion 30 is acted upon, directly to the
  • Spring element 16 is transmitted.
  • the force occurs, for example, when the battery cell 11 is inserted into a receptacle 14 of a heat sink 13.
  • the force is transmitted from the second end portion 30 and the housing cover 23 via theméleitblech 21 on the Spring element 26 and finally to the first end portion 29 of the battery cell.
  • the press-in force is introduced, with which the battery cell 11 is inserted into the receptacle 14 of the heat sink.
  • the housing 12 of the battery cell 11 bulges in the end portion 29 to the outside and thus generates in the inserted state in the receptacle 14 of the heat sink 13 between the battery cell 11 and heat sink 13, a clamping action for the non-positive connection of battery cell 11 and Heatsink 13 provides.
  • FIG. 6 shows, as a further exemplary embodiment of the invention, a battery cell 11 according to FIG. 5 in a lateral plan view, which is arranged next to a further battery cell 11_2.
  • Both battery cells 11 and 11_2 in contrast to the embodiment in Figure 5 in the first end portion 29 has a smaller width than in the opposite second end portion 30.
  • the respective housing 12 is designed as a two-stage drawn metal housing. By this type of tapering of the housing in the first end portion 29, the arrangement of several such battery cells 11, 11_2 close together possible.
  • the heat sinks 13, 13_1, in which the battery cell 11, 11_2 are inserted, may each be present separately or connected to one another or be formed as a single heat sink 13.

Landscapes

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

Abstract

L'invention concerne un élément de batterie, en particulier un élément de batterie lithium-ion, comprenant un boîtier, le boîtier contenant un élément ressort exerçant une force orientée vers l'extérieur sur au moins une première partie du boîtier.
PCT/EP2011/074265 2011-02-14 2011-12-29 Élément de batterie WO2012110168A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102011004033.1 2011-02-14
DE201110004033 DE102011004033A1 (de) 2011-02-14 2011-02-14 Batteriezelle

Publications (1)

Publication Number Publication Date
WO2012110168A1 true WO2012110168A1 (fr) 2012-08-23

Family

ID=45470550

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2011/074265 WO2012110168A1 (fr) 2011-02-14 2011-12-29 Élément de batterie

Country Status (2)

Country Link
DE (1) DE102011004033A1 (fr)
WO (1) WO2012110168A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10476045B2 (en) 2016-02-22 2019-11-12 Ford Global Technologies, Llc Extruded battery case
CN111312951A (zh) * 2018-12-12 2020-06-19 罗伯特·博世有限公司 具有多个电池单池的电池模块

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR102005488B1 (ko) * 2015-06-16 2019-10-01 주식회사 엘지화학 이차 전지용 셀 커버 및 이를 포함하는 배터리 모듈

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5162171A (en) * 1991-10-28 1992-11-10 Globe-Union Inc. Metal oxide-hydrogen battery having modules extending longitudinally of the pressure vessel
EP1278263A2 (fr) * 2001-07-19 2003-01-22 Matsushita Electric Industrial Co., Ltd. Batterie prismatique à structure de refroidissement et assemblage de batteries comportant ces structures
DE102007063190A1 (de) 2007-08-06 2009-02-19 Daimler Ag Batterie, insbesondere für einen Hybridantrieb
DE102007050518A1 (de) * 2007-10-19 2009-04-23 Behr Gmbh & Co. Kg Vorrichtung zur elektrischen Energiespeicherung
DE102008028400A1 (de) * 2008-06-17 2009-12-24 Behr Gmbh & Co. Kg Vorrichtung zur Kühlung einer Fahrzeugbatterie

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5162171A (en) * 1991-10-28 1992-11-10 Globe-Union Inc. Metal oxide-hydrogen battery having modules extending longitudinally of the pressure vessel
EP1278263A2 (fr) * 2001-07-19 2003-01-22 Matsushita Electric Industrial Co., Ltd. Batterie prismatique à structure de refroidissement et assemblage de batteries comportant ces structures
DE102007063190A1 (de) 2007-08-06 2009-02-19 Daimler Ag Batterie, insbesondere für einen Hybridantrieb
DE102007050518A1 (de) * 2007-10-19 2009-04-23 Behr Gmbh & Co. Kg Vorrichtung zur elektrischen Energiespeicherung
DE102008028400A1 (de) * 2008-06-17 2009-12-24 Behr Gmbh & Co. Kg Vorrichtung zur Kühlung einer Fahrzeugbatterie

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10476045B2 (en) 2016-02-22 2019-11-12 Ford Global Technologies, Llc Extruded battery case
CN111312951A (zh) * 2018-12-12 2020-06-19 罗伯特·博世有限公司 具有多个电池单池的电池模块
CN111312951B (zh) * 2018-12-12 2024-03-08 罗伯特·博世有限公司 具有多个电池单池的电池模块

Also Published As

Publication number Publication date
DE102011004033A1 (de) 2012-08-16

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