EP2417651A1 - Cellule galvanique, empilement de cellules et dissipateur thermique - Google Patents

Cellule galvanique, empilement de cellules et dissipateur thermique

Info

Publication number
EP2417651A1
EP2417651A1 EP10712714A EP10712714A EP2417651A1 EP 2417651 A1 EP2417651 A1 EP 2417651A1 EP 10712714 A EP10712714 A EP 10712714A EP 10712714 A EP10712714 A EP 10712714A EP 2417651 A1 EP2417651 A1 EP 2417651A1
Authority
EP
European Patent Office
Prior art keywords
cell
heat sink
galvanic
arrester
heat
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Withdrawn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
EP10712714A
Other languages
German (de)
English (en)
Inventor
Andreas Gutsch
Claus-Rupert Hohenthanner
Torsten Schmidt
Tim Schaefer
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.)
Li Tec Battery GmbH
Original Assignee
Li Tec Battery 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 Li Tec Battery GmbH filed Critical Li Tec Battery GmbH
Publication of EP2417651A1 publication Critical patent/EP2417651A1/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Withdrawn legal-status Critical Current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
    • H01M10/65—Means for temperature control structurally associated with the cells
    • H01M10/659—Means for temperature control structurally associated with the cells by heat storage or buffering, e.g. heat capacity or liquid-solid phase changes or transition
    • 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
    • H01M10/05—Accumulators with non-aqueous electrolyte
    • H01M10/052—Li-accumulators
    • H01M10/0525—Rocking-chair batteries, i.e. batteries with lithium insertion or intercalation in both electrodes; Lithium-ion batteries
    • 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
    • H01M10/6551—Surfaces specially adapted for heat dissipation or radiation, e.g. fins or coatings
    • 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
    • H01M10/6553—Terminals or leads
    • 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
    • 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
    • H01M50/204—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
    • H01M50/211—Racks, modules or packs for multiple batteries or multiple cells characterised by their shape adapted for 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
    • H01M50/50—Current conducting connections for cells or batteries
    • H01M50/502—Interconnectors for connecting terminals of adjacent batteries; Interconnectors for connecting cells outside a battery casing
    • 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
    • H01M50/50—Current conducting connections for cells or batteries
    • H01M50/502—Interconnectors for connecting terminals of adjacent batteries; Interconnectors for connecting cells outside a battery casing
    • H01M50/503—Interconnectors for connecting terminals of adjacent batteries; Interconnectors for connecting cells outside a battery casing characterised by the shape of the interconnectors
    • 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 present invention relates to a galvanic cell, a cell stack and - a heat sink - for cooling galvanic cells.
  • Galvanic cells store energy in chemical form and can absorb and release this energy in electrical form. Both charging and discharging of the cell involve chemical reactions that are often associated with considerable heat generation. The resulting heat must be dissipated effectively to prevent overheating of the cell.
  • the present invention has for its object to provide a technical teaching for the cooling of galvanic cells. This object is achieved by a product according to one of the independent claims.
  • the invention provides to equip at least one arrester of a galvanic cell with a heat sink, which is designed so that the arrester can simultaneously serve for the transport of electrical energy into the cell or from the cell and also for the removal of heat from the cell.
  • galvanic cell in the sense of the present invention encompasses electrical energy stores of all kinds, in particular electrochemical
  • Energy storage i. in particular, primary cells and secondary cells, but also other electrical energy storage such as capacitors.
  • arrester in the sense of the present invention encompasses any type of devices in connection with the transport of electrical energy into a galvanic cell or from a galvanic cell, in particular thus plate-shaped electrodes, or similar devices.
  • arresters are preferably sheet-like electrodes which are connected to the electrode stack of the cell and protrude from the mostly foil-like packaging of the cell, so that the arresters are electrically connected to contact elements or terminals of an application arrangement in FIG Can contact.
  • a heat sink in the sense of the present invention is any type of device which is suitable for facilitating or promoting the heat transfer from a heat source, which is in contact with the heat sink, to a heat sink.
  • heat sinks are heat-conducting, often metallic bodies, which are designed on the one hand so that they can enter with the heat source in a particularly intense heat conduction contact, and on the other hand are designed so that their effective, participating in the heat exchange with a heat sink surface, the so-called Heat transfer surface is as large as possible. They thus serve preferably to increase the effective (effective) heat transfer surface of the heat source, which often has only a smaller heat transfer surface for different structural reasons without the heat sink.
  • a connection is to be understood as a mechanical, electrical and / or heat-conducting connection of two bodies.
  • a non-positive connection is to be understood as meaning a connection between two bodies, which is achieved or at least supported or improved by the action of one or more forces.
  • Examples of such non-positive connections are screw, clamped connections or similar compounds in which the bodies involved mutually exert a force on each other, which makes the connection, supports or improves in quality.
  • a positive connection is to be understood as meaning a connection between two bodies, which is achieved or improved on account of the design of the two bodies involved.
  • the bodies involved are preferably matched in shape so that, in the case of a heat-conducting connection, the heat transfer surface and / or in the case of an electrically conductive connection, the electrical conductivity between the connected bodies is as large as possible.
  • a cohesive connection is to be understood as meaning a connection between two bodies, which is mediated or made possible by a substance.
  • these are thermally conductive potting compounds, adhesives, pastes or elastic jacketleitfolien mounted or arranged in columns between the bodies to be joined so that the compound, i. of the
  • a stack of galvanic cells is understood to mean any arrangement in which a plurality of, preferably similar, cells are arranged to form a cell stack or a battery of cells by means of an electrical series and / or parallel connection. Such cell stacks are also called cell block or battery.
  • a contact element is to be understood as meaning an electrically conductive design element that when assembling cells into a stack or when installing a cell or a cell stack in an arrangement of contacting the cells with each other or a cell or cell stack with a current source or a power consumer.
  • an insulating element is to be understood here as a structural element which, by virtue of its insulating properties, serves in a corresponding manner for the construction of a cell stack or the connection of cells to a current source or a current consumer or the installation of cells or a cell stack in an array.
  • Isolation elements serve here preferably the intended electrical wiring of the arresters of the cells with each other or with contact elements of the arrangement, in particular the avoidance of improper electrical connections, such as electrical short circuits.
  • a holding element is to be understood as an at least partially insulating or electrically conductive construction element which, in addition to the electrical insulation or the electrical contacting, also serves for the mechanical fixation of cells or cell stacks within an arrangement.
  • FIG. 1 shows a galvanic cell according to the invention according to a first
  • Embodiment of the invention with heat sinks on both arresters of the cell
  • FIG. 2 is an enlarged view of a section of the illustration shown in FIG. 1 together with the heat sink attached to the arrester;
  • FIG. 3 is a sectional view of the detail shown in FIG. 2; FIG.
  • FIG. 4 shows an exploded view of the embodiment of a galvanic cell according to the invention shown in FIG. 1;
  • FIG. 5 shows a cell stack of cells according to the invention according to an embodiment of the invention
  • Fig. 6 is a sectional view of the cell stack shown in Fig. 5 and
  • FIG. 7 shows a heat sink according to a preferred embodiment of the present invention.
  • the present invention sees the use of electrical arresters of the galvanic cell for their cooling.
  • the present invention makes use of the observation that good electrical conductors are usually good heat conductors as well.
  • the invention solves this problem by the attachment of heat sinks to the arresters. These heat sinks are mounted so that the arresters can simultaneously fulfill their original function as electrical arresters and can also serve to transport heat from the cell.
  • the heat sinks consist at least partially or in places of an electrically conductive material.
  • materials are also available which combine a comparatively high thermal conductivity with good electrical insulation properties. Examples of such materials are good heat-conducting but electrically insulating ceramics. For example, materials such as silicon carbide and aluminum nitride are used because of their relatively high thermal conductivity for a ceramic material as an electrical insulating material for planteleit frequentlye.
  • the heatsink used may, for example, a metal, a ceramic or from - for example, metallic ceramic -
  • Composite materials are made, as long as they have good thermal conductivity overall properties. They can be positively, positively, or materially connected or in a combination of these connection methods with the arresters.
  • the heat sink can be provided with ribs, openings or similar structures, which lead to an enlargement of the surface.
  • ribs on the heat sink or parts of such ribs can be designed so that they are suitable to lead a cooling fluid or to swirl them specifically to improve the effective heat transfer. It is also advantageous if the heat sink at the same time take on other functions.
  • the heatsink can simultaneously as electrical
  • Contact elements can be used, for example, to allow an electrical series connection of cells or to allow the establishment of an electrical contact to the power consumer or to the power source.
  • Embodiments of the invention are also possible in which the heat sinks are designed as holding elements which at the same time serve to secure the cell or press the arresters against the contact elements.
  • the heat sinks are preferably designed in terms of their electrical conductivity so that their main purpose to improve the cooling of the arresters, in accordance with other aspects, such as the effective and proper electrical contact with the arrester.
  • FIGS. 1 to 4 show an exemplary embodiment of the invention, in which a so-called pouch cell, that is to say a flat galvanic cell 101, 201, 301, 401, which consists of a cell stack which comprises a foil-like packaging 102, 202, 302, 402, 502, 613, from which two arresters 407, 408 protrude, is provided with two heat sinks 103, 104, 105, 106, 203, 204, 303, 304, 403, 404, 405, 406, which are each connected to the upper and bottom of the arrester are attached.
  • a so-called pouch cell that is to say a flat galvanic cell 101, 201, 301, 401, which consists of a cell stack which comprises a foil-like packaging 102, 202, 302, 402, 502, 613, from which two arresters 407, 408 protrude, is provided with two heat sinks 103, 104, 105, 106, 203, 204, 303, 304
  • FIGS 5 and 6 show an embodiment of the invention, in which the heat sink 503, 504 simultaneously as contact elements for electrical
  • the metallic heat sinks 603, 604, 608 lie between two adjacent cells and connect their arresters with each other.
  • Holding or insulating elements 505, 605, 606, 607 provide for the spacing of the cells on the side, the opposite electrical connection.
  • the insulation elements 505, 605, 606, 607 can also be designed as a heat sink.
  • FIG. 7 shows an exemplary embodiment of a heat sink 701 according to the invention with ribs for increasing its effective surface and additional holes or openings 702, 703, 704 in the heat sink, which simultaneously serve to further increase the effective surface of the heat sink and to reduce its weight.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
  • Secondary Cells (AREA)
  • Cooling Or The Like Of Electrical Apparatus (AREA)
  • Connection Of Batteries Or Terminals (AREA)
  • Cooling Or The Like Of Semiconductors Or Solid State Devices (AREA)
  • Battery Mounting, Suspending (AREA)

Abstract

La présente invention concerne une cellule galvanique (101, 401) comportant des éléments de raccordement (407, 408) et des dissipateurs thermiques (103, 104, 105, 106, 403, 404, 405, 406) montés sur ces éléments de raccordement. Ces dissipateurs thermiques sont conçus de façon telle que l'élément de raccordement peut servir simultanément à l'échange d'énergie électrique avec la cellule et à l'évacuation de la chaleur hors de la cellule. Le dissipateur thermique servant au refroidissement de cellules galvaniques est conçu de façon à être monté à force ou par complémentarité de forme ou de matière sur un élément de raccordement d'une cellule galvanique, pour que ledit élément de raccordement puisse servir simultanément à l'échange d'énergie électrique avec la cellule et à l'évacuation de la chaleur hors de la cellule.
EP10712714A 2009-04-08 2010-03-30 Cellule galvanique, empilement de cellules et dissipateur thermique Withdrawn EP2417651A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE200910016868 DE102009016868A1 (de) 2009-04-08 2009-04-08 Galvanische Zelle, Zellenstapel und Kühlkörper
PCT/EP2010/002029 WO2010115559A1 (fr) 2009-04-08 2010-03-30 Cellule galvanique, empilement de cellules et dissipateur thermique

Publications (1)

Publication Number Publication Date
EP2417651A1 true EP2417651A1 (fr) 2012-02-15

Family

ID=42229266

Family Applications (1)

Application Number Title Priority Date Filing Date
EP10712714A Withdrawn EP2417651A1 (fr) 2009-04-08 2010-03-30 Cellule galvanique, empilement de cellules et dissipateur thermique

Country Status (8)

Country Link
US (1) US20120171544A1 (fr)
EP (1) EP2417651A1 (fr)
JP (1) JP2012523654A (fr)
KR (1) KR20120028303A (fr)
CN (1) CN102388481A (fr)
BR (1) BRPI1015245A2 (fr)
DE (1) DE102009016868A1 (fr)
WO (1) WO2010115559A1 (fr)

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US9196878B2 (en) * 2012-11-20 2015-11-24 GM Global Technology Operations LLC Stackable cartridge module design
AT514595B1 (de) 2013-06-24 2015-02-15 Avl List Gmbh Zellrahmen für eine Batteriezelle
JP2015056341A (ja) * 2013-09-13 2015-03-23 株式会社オートネットワーク技術研究所 蓄電モジュール
DE102013112726A1 (de) 2013-11-19 2015-05-21 Dr. Ing. H.C. F. Porsche Aktiengesellschaft Batteriezellengruppe für ein Batteriemodul einer zum rein elektrischen Antrieb eines Kraftfahrzeugs vorgesehenen Kraftfahrzeugbatterie
DE102013112728A1 (de) 2013-11-19 2015-05-21 Dr. Ing. H.C. F. Porsche Aktiengesellschaft Batteriezellengruppe für ein Batteriemodul einer zum rein elektrischen Antrieb eines Kraftfahrzeugs vorgesehenen Kraftfahrzeugbatterie
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CN106207072B (zh) * 2016-09-14 2018-11-13 恒大法拉第未来智能汽车（广东）有限公司 电池组极耳冷却结构、电池组以及具有该电池组的车辆
CN206148522U (zh) * 2016-09-14 2017-05-03 乐视汽车（北京）有限公司 电池组极耳冷却结构、电池组以及具有该电池组的车辆
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Also Published As

Publication number Publication date
WO2010115559A1 (fr) 2010-10-14
DE102009016868A1 (de) 2010-10-14
CN102388481A (zh) 2012-03-21
BRPI1015245A2 (pt) 2016-05-03
US20120171544A1 (en) 2012-07-05
KR20120028303A (ko) 2012-03-22
JP2012523654A (ja) 2012-10-04

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