WO2020103984A1 - Élément de batterie - Google Patents

Élément de batterie

Info

Publication number
WO2020103984A1
WO2020103984A1 PCT/DE2019/101005 DE2019101005W WO2020103984A1 WO 2020103984 A1 WO2020103984 A1 WO 2020103984A1 DE 2019101005 W DE2019101005 W DE 2019101005W WO 2020103984 A1 WO2020103984 A1 WO 2020103984A1
Authority
WO
WIPO (PCT)
Prior art keywords
cell
battery cell
heat conducting
cooling device
conducting rods
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.)
Ceased
Application number
PCT/DE2019/101005
Other languages
German (de)
English (en)
Inventor
Christian Schlögl
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.)
Christian Schloegl Controls Ug
Original Assignee
Christian Schloegl Controls Ug
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 Christian Schloegl Controls Ug filed Critical Christian Schloegl Controls Ug
Priority to DE112019005840.1T priority Critical patent/DE112019005840B4/de
Publication of WO2020103984A1 publication Critical patent/WO2020103984A1/fr
Anticipated expiration legal-status Critical
Ceased 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
    • H01M10/04—Construction or manufacture in general
    • H01M10/0431—Cells with wound or folded electrodes
    • 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
    • H01M10/653—Means for temperature control structurally associated with the cells characterised by electrically insulating or thermally conductive materials
    • 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
    • H01M10/654—Means for temperature control structurally associated with the cells located inside the innermost case of the cells, e.g. mandrels, electrodes or electrolytes
    • 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
    • H01M10/64—Heating or cooling; Temperature control characterised by the shape of the cells
    • H01M10/647—Prismatic or flat cells, e.g. pouch 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
    • 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
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
    • Y02P70/50—Manufacturing or production processes characterised by the final manufactured product

Definitions

  • the present invention relates to a battery cell at least comprising: a cell housing, a cooling device arranged inside the cell housing for the axial removal of heat with respect to a longitudinal axis of the cell housing, and an electrode pack arranged inside the cell housing; and a method for producing such a battery cell.
  • the present invention is based on the object of providing a battery cell which is improved in comparison with the prior art and a method for its production which regulates the heat balance within the battery cell in a simple and efficient manner and makes it possible To increase the packing density of several battery cells within a system from such cells.
  • a battery cell according to the invention is characterized in that the cooling device is formed from at least three heat-conducting rods, the at least three heat-conducting rods being designed and arranged within the cell housing in such a way that they are in thermally conductive contact with the electrode package over a major part of their surface and at the same time allow a change in the winding geometry of the electrode package.
  • Such a battery cell not only enables efficient heat transfer from the inside of the cell, preferably along the longitudinal axis of the battery cell, to the outside in at least three partial areas of the cell, but also advantageously allows the cell structure of each individual battery cell with regard to the individual energy storage efficiency and the packing density within a larger battery system or to increase the association.
  • a cooling device allows three heat-conducting rods, which are arranged at an angle of 180 ° to one another in relation to the longitudinal axis of the cell, in particular to switch from a cylindrical winding of the electrodes in the interior of the battery cell to an approximately triangular winding of the electrodes on the outer edge of the battery cell, and in this way to produce battery cells with a triangular cross section of the cell housing.
  • Battery cells with cell housings that have flat outer surfaces can advantageously be packed tightly into larger units within a larger battery system.
  • the cooling principle implemented in a battery cell according to the invention advantageously supports rapid and efficient heat dissipation from the cell interior, in particular in a radial orientation, and advantageously enables this uniform heat dissipation from several cells arranged in parallel in a network of battery cells.
  • the cooling device can be formed from four heat conducting rods, which are arranged approximately in the form of a square within the cell housing.
  • This arrangement of the heat conducting rods advantageously enables particularly uniform and rapid heat absorption distributed over all four quadrants of the battery cell.
  • such an arrangement makes it possible, in particular, to change from a cylindrical winding of the electrodes in the interior of the battery cell to an approximately square winding of the electrodes on the outer edge of the battery cell, and in this way to produce battery cells with a square cross section of the cell housing.
  • Battery cells with cell housings that have flat outer surfaces can advantageously be packed tightly into larger units within a larger battery system.
  • the at least three heat-conducting rods are formed from an electrically non-conductive and thermally highly conductive material.
  • Thermally conductive rods made of a thermally highly conductive material advantageously enable rapid and efficient heat transfer and are therefore particularly suitable for removing heat from the interior of the cell, ie for cell cooling.
  • the electrically non-conductive and thermally highly conductive material consists of a ceramic, preferably comprising silicon carbide, base material. Ceramic materials, especially silicon carbide, are comparatively easy to process and advantageously have high strength, high chemical resistance and very good electrical insulation.
  • the cooling device in particular the heat conducting rods
  • the cooling device can be formed in one piece with the base plate, in particular manufactured.
  • a cooling device formed in one piece with a base plate, in particular in one piece with a base plate Advantagely enable good (efficient) heat transfer from the cooling device, in particular the heat conducting rods to the base plate, and thus the efficient dissipation of heat from the battery cell to the environment.
  • the cooling device in particular its heat conducting rods, can also be connected in several parts with direct heat coupling to a base plate, preferably comprising a temperature control device.
  • a base plate preferably comprising a temperature control device.
  • the base plate is thermally conductively connected directly to a bottom of the cell housing or in which the base plate also forms the bottom of the cell housing.
  • a direct thermally conductive connection of the base plate to the bottom of the cell housing advantageously improves the removal of the heat from the respective battery cell.
  • the base plate can also form the base of the cell housing and thus advantageously save material.
  • the base plate is formed from an electrically non-conductive and thermally highly conductive material, in particular from a ceramic base material, preferably from silicon carbide.
  • a ceramic base material preferably from silicon carbide.
  • a method for producing such a battery cell is characterized in that when an electrode package is wound, the at least three heat conducting rods of the cooling device are introduced one after the other or simultaneously axially along a partial winding of the electrode package, and the entire electrode package is then wound to the end.
  • FIG. 1 shows an embodiment of a battery cell according to the invention in a plan view.
  • FIG. 2 shows a composite of battery cells according to FIG. 1 in a top view;
  • FIG. 3 shows a perspective side view of an embodiment of a cooling device connected to a base plate without an electrode packet and cell housing;
  • FIG. 4 shows a side view of an embodiment of the battery cell from FIG. 3 with the cell housing raised.
  • the battery cell 1 shows an embodiment of a battery cell 1 according to the invention in a plan view.
  • the battery cell 1 comprises at least one cell housing 3, a cooling device 4, which is arranged inside the cell housing 3, for axially dissipating heat with respect to a longitudinal axis 31 (see FIGS. 3 and 4) of the cell housing 3, and an electrode packet which is arranged inside the cell housing 3 5.
  • the cooling device 4 is formed from at least three, or as shown here, preferably from four, heat conducting rods 41, which are of this type are formed and arranged within the cell housing 3 such that they are in thermally conductive contact with the surfaces 510 and 520 of the electrode packet 5 via a main part of their surfaces 41 1 and 412 and at the same time allow a change in the winding geometry of the electrode packet 5.
  • the heat conducting rods 41 can preferably be arranged in the four quadrants of a quadrilateral, the center of the battery cell 1, in which the longitudinal axis 31 of the cell is shown in FIGS. 3 and 4, free of a cooling device 4 , in particular free of heat conducting rods 41, and thus only comprises an inner, in particular cylindrically wound, partial winding 51 of the electrode packet 5.
  • the heat conducting rods 41 are preferably constructed approximately at right angles with two outer surfaces 411 and preferably have a rounded corner 413 in the transition from one another.
  • the winding geometry can now advantageously change from cylindrical (with a circular diameter) to a, in this case, square winding geometry.
  • FIG. 2 shows a composite of battery cells 1 according to FIG. 1 in a top view.
  • winding geometries enable formation Approximately flat outer sides of the battery cell 1 allow a tight packing of several battery cells 1 to form a composite, the free space between the individual battery cells 1 in contrast to the packing of cylindrical battery cells 1 can advantageously be minimized and the energy density of such a module (composite of battery cells 1) im Compared to standard geometries of existing round cells (e.g. in the format 18650 or 21700) is not changed.
  • three heat rods 41 in the form of a triangle can also be arranged inside a battery cell 1 and the winding geometry can be changed accordingly from cylindrical to triangular or other polygonal (pentagonal, hexagonal, ...) arrangements be provided.
  • FIG. 3 shows a perspective side view of an embodiment of a cooling device 4 without an electrode package 5 and cell housing 3 connected to a base plate 32 for a clearer illustration of the cooling device 4, in particular its heat conducting rods 41.
  • the heat conducting rods 41 preferably extend in the form of a pin, along a longitudinal axis 31 of the battery cell 1 , largely over the entire height of the battery cell 1, so that uniform heat dissipation is advantageously ensured over the entire height, the heat advantageously being dissipated along the longitudinal axis 31 of the battery cell 1 to a base plate 32 and / or to a base 33 of the battery cell 1.
  • the base plate 32 can, as shown, be thermally conductively connected directly to the bottom 33 of the cell housing 3 or can itself form the bottom 33 of the cell housing (3).
  • the base 33 and / or the base plate 32 comprises a temperature control device 2, which facilitates further heat dissipation to the surroundings.
  • a temperature control device 2 can be formed, for example, by an evaporator plate, which absorbs the cell heat through a liquid heat-conducting medium at the bottom 33 of the battery cell 1, evaporates the heat-conducting medium and transfers it through a cooling circuit into a condensation area, where it releases the cell heat to the environment by condensing the heat-conducting medium .
  • the at least three, or as shown here four, heat conducting rods 41 are preferably formed from an electrically non-conductive and thermally highly conductive material, the electrically non-conductive and thermally highly conductive material preferably from one ceramic base material, such as silicon carbide in particular.
  • the heat conducting rods 41 can also comprise a core made of a metallic material, such as preferably copper or a non-ferrous (NE) metal such as aluminum, and can be provided on its surface 41 1 with an, in particular oxidically applied, electrical insulation layer (not shown). .
  • FIG. 4 shows a side view of an embodiment of the battery cell 1 from FIG. 3 with the cell housing 3 raised.
  • the electrode package 5 is also not shown here.
  • the cooling device 4, in particular its heat conducting rods 41 is preferably formed in one piece with the base plate 32.
  • the cooling device 4, in particular its heat conducting rods 41 can also be connected in several parts with direct heat coupling to the base plate 32.
  • the base plate 32 is formed from an electrically non-conductive and thermally highly conductive material, in particular from a ceramic base material, preferably from silicon carbide.
  • both the cooling device 4, in particular its heat-conducting rods 41, and the base plate 32 are formed from the same electrically non-conductive and thermally highly conductive material, preferably a ceramic base material, such as silicon carbide, this offers structural advantages, in particular due to the same thermal expansion coefficients, and advantageously increases them Battery cell life 1.
  • the at least three heat conducting rods 41 of the cooling device 4 are introduced one after the other or at the same time axially along an inner partial winding 51 of the electrode package 5, for example pushed in, and then the entire electrode package 5, corresponding to that by the Number and shape of the heat conducting rods 41 given the winding geometry wound to the end.
  • the cooling principle disclosed in the battery cell 1 according to the invention can advantageously be integrated into existing manufacturing processes for battery cells without causing high conversion costs.
  • the present invention relates to a battery cell 1 at least comprising: a cell housing 3, a cooling device 4 arranged inside the cell housing 3 for the axial removal of heat with respect to a longitudinal axis 31 of the cell housing 3, and an electrode pack 5 arranged inside the cell housing 3, which is characterized in that the cooling device 4 is formed from at least three heat conducting rods 41, the at least three heat conducting rods 41 being designed and arranged within the cell housing 3 in such a way that they over a major part of their surfaces 411 and 412 with the surfaces 510 and 520 of the electrode package 5 are thermally conductive in contact and at the same time a change in
  • the invention also relates to a manufacturing method for such a battery cell 1. This not only enables efficient heat transfer from the cell interior, preferably along the longitudinal axis 31, but also advantageously allows the cell structure of each individual battery cell 1 with regard to the individual

Landscapes

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

Abstract

La présente invention concerne un élément de batterie (1) comportant au moins : un boîtier d'élément (3), un dispositif de refroidissement (4) disposé à l'intérieur du boîtier d'élément (3) pour l'évacuation axiale de chaleur par rapport à un axe longitudinal (31) du boîtier d'élément (3), et un paquet d'électrodes (5), disposé à l'intérieur du boîtier d'élément (3), qui est caractérisé en ce que le dispositif de refroidissement (4) est formé d'au moins trois tiges thermoconductrices (41) qui sont conçues et disposées à l'intérieur du boîtier d'élément (3) de manière qu'elles sont en contact thermoconducteur par le biais d'une partie principale de leurs surfaces (411, 412) avec les surfaces (510, 520) du paquet d'électrode (5) et permettent simultanément une modification de la géométrie d'enroulement du paquet d'électrodes (5). La présente invention concerne en outre un procédé de fabrication pour un élément de batterie (1) de ce genre. Celle-ci permet non seulement un transport de chaleur efficace depuis l'intérieur des éléments, de préférence le long de l'axe longitudinal (31), vers l'extérieur, mais autorise en plus de manière avantageuse de rehausser la constitution de chaque élément de batterie (1) individuel en ce qui concerne l'efficacité individuelle d'accumulation d'énergie ainsi que d'augmenter la densité d'empilement à l'intérieur d'un plus grand système de batteries.
PCT/DE2019/101005 2018-11-23 2019-11-23 Élément de batterie Ceased WO2020103984A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE112019005840.1T DE112019005840B4 (de) 2018-11-23 2019-11-23 Batteriezelle

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102018009182.2 2018-11-23
DE102018009182.2A DE102018009182A1 (de) 2018-11-23 2018-11-23 Batteriezelle

Publications (1)

Publication Number Publication Date
WO2020103984A1 true WO2020103984A1 (fr) 2020-05-28

Family

ID=69182441

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/DE2019/101005 Ceased WO2020103984A1 (fr) 2018-11-23 2019-11-23 Élément de batterie

Country Status (2)

Country Link
DE (2) DE102018009182A1 (fr)
WO (1) WO2020103984A1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102020207858B4 (de) 2020-06-25 2024-06-06 Volkswagen Aktiengesellschaft Batteriezelle, Batteriemodul mit einer Batteriezelle, Batteriesystem mit einem Batteriemodul, Kraftfahrzeug mit einem Batteriesystem sowie Verfahren zum Herstellen einer Batteriezelle
CN113611957B (zh) * 2021-08-03 2023-07-07 深圳市科信通信技术股份有限公司 一种电芯、电池模组及电芯的制造方法

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20020071986A1 (en) * 2000-12-08 2002-06-13 Ivan Exnar Rolled electrode battery with heat sink
DE102007010750B3 (de) 2007-02-27 2008-09-04 Daimler Ag Elektrochemische Einzelzelle für eine Batterie, Verwendung einer Einzelzelle und Verwendung einer Batterie
WO2012089133A1 (fr) * 2010-12-31 2012-07-05 Byd Company Limited Batterie
DE102012018339A1 (de) * 2012-09-15 2014-03-20 Audi Ag Batterie
WO2014154825A1 (fr) * 2013-03-28 2014-10-02 Technische Universität München Cellule de stockage d'énergie
DE102017108722A1 (de) * 2016-05-03 2017-11-09 Ford Global Technologies, Llc Effektiv gekühlte Batterieanordnungen

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2534241B (en) * 2015-04-20 2017-06-14 Tanktwo Oy Non-prismatic electrochemical cell
DE102017207553A1 (de) * 2017-05-04 2018-11-08 Bayerische Motoren Werke Aktiengesellschaft Elektrische Energiespeicherzelle

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20020071986A1 (en) * 2000-12-08 2002-06-13 Ivan Exnar Rolled electrode battery with heat sink
DE102007010750B3 (de) 2007-02-27 2008-09-04 Daimler Ag Elektrochemische Einzelzelle für eine Batterie, Verwendung einer Einzelzelle und Verwendung einer Batterie
WO2012089133A1 (fr) * 2010-12-31 2012-07-05 Byd Company Limited Batterie
DE102012018339A1 (de) * 2012-09-15 2014-03-20 Audi Ag Batterie
WO2014154825A1 (fr) * 2013-03-28 2014-10-02 Technische Universität München Cellule de stockage d'énergie
DE102017108722A1 (de) * 2016-05-03 2017-11-09 Ford Global Technologies, Llc Effektiv gekühlte Batterieanordnungen

Also Published As

Publication number Publication date
DE112019005840B4 (de) 2024-09-26
DE102018009182A1 (de) 2020-05-28
DE112019005840A5 (de) 2021-08-26

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