EP2614551A1 - Système de batterie - Google Patents

Système de batterie

Info

Publication number
EP2614551A1
EP2614551A1 EP11743216.1A EP11743216A EP2614551A1 EP 2614551 A1 EP2614551 A1 EP 2614551A1 EP 11743216 A EP11743216 A EP 11743216A EP 2614551 A1 EP2614551 A1 EP 2614551A1
Authority
EP
European Patent Office
Prior art keywords
cell
battery
conducting plate
heat
cell housing
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Withdrawn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
EP11743216.1A
Other languages
German (de)
English (en)
Inventor
Christian Pankiewitz
Ralf Angerbauer
Holger Fink
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.)
Robert Bosch GmbH
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 EP2614551A1 publication Critical patent/EP2614551A1/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Withdrawn legal-status Critical Current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
    • H01M10/64—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
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/10—Primary casings; Jackets or wrappings
    • H01M50/116—Primary casings; Jackets or wrappings characterised by the material
    • H01M50/117—Inorganic material
    • H01M50/119—Metals
    • 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
    • H01M10/65—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
    • H01M10/658—Means for temperature control structurally associated with the cells by thermal insulation or shielding
    • 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
    • H01M50/10—Primary casings; Jackets or wrappings
    • H01M50/131—Primary casings; Jackets or wrappings characterised by physical properties, e.g. gas permeability, size or heat resistance
    • H01M50/133—Thickness
    • 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
    • H01M50/10—Primary casings; Jackets or wrappings
    • H01M50/131—Primary casings; Jackets or wrappings characterised by physical properties, e.g. gas permeability, size or heat resistance
    • 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 system comprising at least two battery cells and a heat conducting plate, wherein the at least two battery cells are arranged together on one side of the heat conducting plate for heat exchange between the cell housings and the heat conducting plate.
  • Such a battery system is disclosed for example in DE 602 08 862 T2.
  • the battery cells are designed as prismatic battery cells and arranged in the form of a battery cell stack on the heat conducting plate.
  • a plurality of battery cells are received by an outer battery housing.
  • the purpose of the battery housing is to ensure a good heat exchange between the heat conducting plate and the cell housings of the battery cells.
  • the battery housing encloses the battery cells received by him over a large area.
  • a battery case includes a heat transmitting member having protruding, tab-shaped ends. In the assembled state, these tab-shaped ends abut against the heat-conducting plate and ensure the heat exchange between the cell casing and the heat-conducting plate.
  • the invention relates to a battery system comprising at least two battery cells and a heat conducting plate, each battery cell having a thermally conductive cell housing, wherein the battery cells together on a Side of the heat conducting plate for the purpose of heat exchange between the cell housings and the heat conducting plate are arranged.
  • the battery cells are arranged together on one side of the heat-conducting for the purpose of heat exchange between the cell housings and the heat conducting plate such that the heat exchange between the cell housings and the heat conducting in each case at least 50% directly between the heat conducting and a heat conducting plate opposite underside of the cell housing.
  • the cell housing of a battery cell is characterized in that it includes an electrolyte used for the power generation of the battery cell.
  • the battery system according to the invention makes it possible to dispense with additional means, which promote the heat exchange between cell housings of the battery cells and the heat conducting plate, in particular on heat conducting elements which are arranged between the battery cells or the battery cell cell housings and connected to the heat conducting plate.
  • additional means which promote the heat exchange between cell housings of the battery cells and the heat conducting plate, in particular on heat conducting elements which are arranged between the battery cells or the battery cell cell housings and connected to the heat conducting plate.
  • the heat exchange between the cell housings and the heat-conducting plate can optionally take place completely directly between the undersides of the cell housing and the heat-conducting plate.
  • the structure of the invention allows a considerable simplification of the battery system. Due to this, a battery system according to the invention has cost advantages and can be made compact and efficient.
  • the battery cells are designed as prismatic battery cells.
  • the cell housings may each have at least three, in particular four, side walls, in addition to the underside and one upper side, in particular parallel to the underside.
  • one or more side walls of the cell housing of each battery cell can be made thicker than would be required to meet the mechanical requirements. This has the advantage that heat generated within the battery cells is supplied to an increased extent via the thicker side walls of the underside of the cell housing, from where the heat is then passed directly to the heat conducting plate.
  • At least one, in particular two, side wall of a cell housing has a wall thickness which is greater than the wall thickness of the underside of the same cell housing and / or greater than the wall thickness of another side wall of the same cell housing and / or larger than that
  • Wall thickness of the top of the same cell housing is. This has the advantage that the heat exchange from the cell interior to the side wall, from the side wall to the bottom and thus also to the heat plate is improved. Thus, advantageously, temperature gradients in the cell interior can be reduced, whereby the weight of the battery system can be kept low.
  • adjacent sidewalls of adjacent cell housings of adjacent battery cells have a greater wall thickness than the bottoms and / or tops and / or other sidewalls of the cell housings of the battery cells.
  • the heat exchange between adjacent battery cells can be improved and thus temperature gradients within the battery system can be reduced.
  • Sidewalls that are not adjacent to other cell housings may have a wall thickness that is less than or equal to the wall thickness of the underside of the cell housing. This has the advantage that the weight of the cell housing and thus of the battery system can be reduced.
  • the cell housings can each have two large-area, parallel side walls and two small-area, mutually parallel side walls.
  • at least one large-area side wall of a cell housing adjacent to a large-scale side wall of a cell housing be arranged an adjacent battery cell.
  • the large-area side walls of a cell housing have a greater wall thickness than the underside and / or top and / or the small-area side walls of the same cell housing. In this way, temperature gradients can be improved both within a battery cell and within the battery system.
  • the cell casings each preferably have a thermal conductivity ⁇ of at least 40 W / mK, in particular of at least 120 W / mK, for example up to 400 W / mK.
  • the cell housings are preferably metallic housings.
  • the cell housing made of aluminum or copper, in particular aluminum, may be formed.
  • a heat conducting means preferably a fluidic thermal conduction, for example a thermal grease, is provided.
  • a fluidic thermal conduction for example a thermal grease
  • an electrical insulating means is preferably arranged between two adjacent battery cells.
  • the heat-conducting plate may be part of a tempering device or be connectable to such a tempering device.
  • a tempering device can be, for example, a coolant system via which the battery cells can be cooled.
  • Fig. 1 is a schematic perspective view of a single battery cell
  • FIG. 2 shows a schematic, perspective view of a first embodiment of a battery system according to the invention
  • FIG. 3 shows a schematic cross section through the battery system shown in FIG. 2;
  • FIG. 4 is a schematic view of the battery system shown in FIG. 2 connected to a coolant system; FIG. and
  • Fig. 5 is a schematic, perspective view of a section of a
  • FIG. 2 shows a perspective view of an embodiment of a battery system 1 according to the invention.
  • the battery system 1 comprises a plurality of battery cells 2 and a heat-conducting plate 4.
  • the battery cells 2 are designed as prismatic battery cells and, aligned parallel to each other, arranged on the heat-conducting plate 4 in the form of a battery cell stack. In particular, the battery cells 2 are aligned perpendicular to the surface of the heat conducting plate 4.
  • the heat-conducting plate 4 is formed in this embodiment as a support plate, in particular as a bottom plate for the battery cells 2.
  • the heat-conducting plate 4 preferably consists of a nem material which has a high thermal conductivity, for example aluminum or copper.
  • FIG. 1 shows a single prismatic battery cell 2.
  • the battery cell 2 comprises two contacts 11, via which a voltage provided by the battery cell 2 can be tapped or via which the battery cell 2, in the case of an accumulator cell, can also be charged can.
  • the battery cell 2 comprises a cell housing 3, which encloses an electrolyte not shown here in detail and two electrodes in its housing interior.
  • the cell housing 3 is plate-shaped and comprises a small-area underside 12c, a small surface 12d lying parallel to the underside 12c, two surface-parallel side walls 12e, 12f and two plane-parallel opposite, large-area side walls 12a, 12b.
  • the battery cells 2 are arranged on the heat-conducting plate 4 such that the side surface opposite the contacts 11, the underside 12c of the cell housing 3, is opposite the surface of the heat-conducting plate 4.
  • the bases 12a, 12b of adjacent battery cells 2 are directly adjacent to each other.
  • each battery cell 3 comprises lateral tabs 7a,
  • a heat-conducting agent 6 may be applied in order to reduce the heat-transfer resistance between the cell housing 3 and the heat-conducting plate 4.
  • the heat-conducting medium is preferably a fluid, for example a thermal paste.
  • the cell casing 3 preferably has a thermal conductivity ⁇ of at least 40 W / mK.
  • the cell housing 3 of each battery cell 2 is in this embodiment, a metallic housing, for example made of aluminum.
  • the wall thickness of the cell housing 3 may for example have a value in the range of 0.3 mm to 4 mm. Although the highest possible wall thickness is advantageous for the heat conduction, it has disadvantages with regard to the weight and the dimensioning of the battery cell 2.
  • the battery system 2 comprises a tensioning device for clamping the battery cells 2.
  • a tensioning device for clamping the battery cells 2.
  • the battery cells 2 By clamping the battery cells 2, arrows P which characterize the pressure in FIG. 2, the battery cells 2 are pressed against one another on their large-area side walls 12a, 12b. In this way, the heat exchange between adjacent battery cells 2 can be increased. In this way, a temperature compensation between the individual battery cells 2 can be promoted.
  • the clamping pressure generated by the clamping device is preferably matched to the thermal expansion of the battery cells 2, that it remains maintained throughout the temperature working range of the battery system.
  • Fig. 2 as a possible embodiment of such a clamping device part of a clamping frame.
  • the clamping device may for example also be designed by an elastic strap.
  • the heat exchange between the battery cells 2 and the heat conducting plate 4 takes place for the most part, ie at least 50%, directly between the heat conducting plate 4 and the heat conducting plate 4 opposite underside 12c of each cell housing 3 of the battery cells 2.
  • the heat generated within the battery cells 2 heat can flow directly through the bottom 12c in the direction of heat conduction plate 4, or indirectly via the adjacent side walls and in particular the large-area side walls 12a, 12b initially the bottom 12c are fed, and are directed from there directly to the heat conducting 4.
  • FIG. 4 shows a perspective view of the battery system 1, which is connected to a tempering device 13.
  • the tempering device 13, here a coolant system, serves to dissipate heat stored in the heat conduction plate 4 heat.

Landscapes

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

Abstract

L'invention concerne un système de batterie qui comprend au moins deux éléments de batterie (2) et une plaque thermoconductrice (4), chaque élément de batterie (2) comportant un boîtier (3) thermoconducteur, les éléments de batterie (2) étant agencés ensemble sur un côté de la plaque thermoconductrice (4) pour réaliser un échange de chaleur entre les boîtiers d'élément de batterie (3) et la plaque conductrice (4) de telle manière que l'échange de chaleur entre les boîtiers d'élément de batterie (3) et la plaque thermoconductrice (4) s'effectue respectivement pour au moins 50 % directement entre une plaque thermoconductrice (4) et une face inférieure (12c) du boîtier d'élément de batterie (3) opposé à la plaque thermoconductrice (4).
EP11743216.1A 2010-09-10 2011-07-20 Système de batterie Withdrawn EP2614551A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE201010040545 DE102010040545A1 (de) 2010-09-10 2010-09-10 Batteriesystem
PCT/EP2011/062406 WO2012031811A1 (fr) 2010-09-10 2011-07-20 Système de batterie

Publications (1)

Publication Number Publication Date
EP2614551A1 true EP2614551A1 (fr) 2013-07-17

Family

ID=44503788

Family Applications (1)

Application Number Title Priority Date Filing Date
EP11743216.1A Withdrawn EP2614551A1 (fr) 2010-09-10 2011-07-20 Système de batterie

Country Status (3)

Country Link
EP (1) EP2614551A1 (fr)
DE (1) DE102010040545A1 (fr)
WO (1) WO2012031811A1 (fr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2012248339A (ja) * 2011-05-25 2012-12-13 Sanyo Electric Co Ltd 電力用の電源装置及び電源装置を備える車両
KR20130049025A (ko) * 2011-11-03 2013-05-13 삼성에스디아이 주식회사 이차 전지
DE102012219057A1 (de) * 2012-10-18 2014-06-12 Bayerische Motoren Werke Aktiengesellschaft Energiespeichermodul und Verfahren zur Herstellung des Energiespeichermoduls
US20150263397A1 (en) * 2014-03-13 2015-09-17 Ford Global Technologies, Llc Side mounted traction battery thermal plate

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3850688B2 (ja) 2001-07-19 2006-11-29 松下電器産業株式会社 角形電池及び組電池の冷却装置
DE102007010744B4 (de) * 2007-02-27 2009-01-22 Daimler Ag Batteriezelle einer Batterie, Zellverbund aus Batteriezellen und Verwendung mehrerer Zellen
JP2009110832A (ja) * 2007-10-31 2009-05-21 Sanyo Electric Co Ltd 角形電池及び電池パック
US20110020676A1 (en) * 2008-03-24 2011-01-27 Sanyo Electric Co., Ltd. Battery device and battery unit
JP2010040420A (ja) * 2008-08-07 2010-02-18 Sanyo Electric Co Ltd 車両用の電源装置

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO2012031811A1 *

Also Published As

Publication number Publication date
DE102010040545A1 (de) 2012-04-19
WO2012031811A1 (fr) 2012-03-15

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