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WO2016116321A1 - Cellule de batterie pourvue d'un composant en matière plastique et batterie - Google Patents

Cellule de batterie pourvue d'un composant en matière plastique et batterie Download PDF

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Publication number
WO2016116321A1
WO2016116321A1 PCT/EP2016/050412 EP2016050412W WO2016116321A1 WO 2016116321 A1 WO2016116321 A1 WO 2016116321A1 EP 2016050412 W EP2016050412 W EP 2016050412W WO 2016116321 A1 WO2016116321 A1 WO 2016116321A1
Authority
WO
WIPO (PCT)
Prior art keywords
plastic component
electrode
battery cell
plastic
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.)
Ceased
Application number
PCT/EP2016/050412
Other languages
German (de)
English (en)
Inventor
Markus Kohlberger
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
Priority to CN201680006582.1A priority Critical patent/CN107112450B/zh
Publication of WO2016116321A1 publication Critical patent/WO2016116321A1/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
    • H01M10/0481—Compression means other than compression means for stacks of electrodes and separators
    • 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
    • H01M50/172—Arrangements of electric connectors penetrating the casing
    • H01M50/174—Arrangements of electric connectors penetrating the casing adapted for the shape of the cells
    • H01M50/176—Arrangements of electric connectors penetrating the casing adapted for the shape of the cells 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
    • H01M50/10—Primary casings; Jackets or wrappings
    • H01M50/102—Primary casings; Jackets or wrappings characterised by their shape or physical structure
    • H01M50/103—Primary casings; Jackets or wrappings characterised by their shape or physical structure prismatic or rectangular
    • 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
    • H01M50/531—Electrode connections inside a battery casing
    • H01M50/533—Electrode connections inside a battery casing characterised by the shape of the leads or tabs
    • 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
    • H01M50/543—Terminals
    • H01M50/547—Terminals characterised by the disposition of the terminals on the cells
    • H01M50/55—Terminals characterised by the disposition of the terminals on the cells on the same side of the cell
    • 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, preferably a lithium-ion battery cell, with a plastic component for enclosing the electrodes. Furthermore, the present invention relates to a battery, preferably a rechargeable lithium-ion battery, with at least two of the battery cells according to the invention.
  • battery is meant here that at least two battery cells are interconnected in series or in parallel.
  • the terms battery cell and cell are used interchangeably in the present specification.
  • Sophisticated rechargeable batteries also as secondary battery or
  • Rechargeable batteries for use, that is, a parallel or serial combination of several individual electrically interconnected rechargeable
  • Battery cells to a battery pack or a so-called battery module.
  • Known rechargeable lithium-ion batteries consist of at least one, usually two or more lithium-ion battery cells having at least one positive electrode, that is, an anode, and a negative electrode, that is, a cathode, which lithium ions store reversibly, also known as intercalation, and can outsource what is called deintercalation.
  • An example of such a known lithium-ion battery cell is shown in DE 10 201 1 077 295 A1, which discloses a lithium-ion battery cell in which a wound-up electrode ensemble is arranged in a so-called hardcase, so-called collectors the side edges of the Keep the film stack clamped and arrange it in the housing.
  • the collectors are arranged here on the vertical sides of the films, whereby a horizontal alignment of the clamped areas of the film stack is implemented.
  • Electrolyte component necessary which contains a so-called lithium-conducting salt.
  • LiPF 6 lithium hexa-fluorophosphate LiPF 6 .
  • LiPF 6 is extremely reactive to moisture and hydrolysis takes place in several stages up to hydrogen fluoride HF.
  • Figure 5 shows a schematic view of such a lithium-ion cell 9, in which a housing 91 uses such a metal portion to protect an electrode ensemble 92 to the outside.
  • the electrode ensemble 92 consists of at least one positive electrode, the anode, and at least one negative electrode, the cathode, of which acting as a current collector Ableiterfolien 921, 922 to the side
  • the Ableiterfolien 921, 922 are each of a
  • Housing 91 are passed to allow a tap from the outside.
  • the arrester foils 921 and 922 of the electrodes are usually mutually connected opposite to each other, the arrester foil 921 protruding from the electrode assembly 92 toward the left side wall 91 1 of the housing 91, and the arrester foil 922 protruding from the electrode assembly 92 toward the right side wall 912 of the housing 91.
  • the arrester foils 921, 922 thus have a so-called horizontal or horizontal arrangement in the housing 91, in which the arrester foils 921, 922 are arranged opposite one another in the housing 91 in a longitudinal direction of the housing 91.
  • lithium-ion battery cells generally have the disadvantage that their energy density in relation to their weight is not high enough, for example, to provide sufficient electric vehicles, in particular to achieve, for example, a satisfactory range of the electric vehicle. Consequently, research in the field of automotive technology seeks to increase the energy density of lithium-ion battery cells as much as possible.
  • the present invention provides a battery cell, preferably in the form of a lithium-ion battery cell, comprising a housing, a housing cover with terminals provided therein, and a housing disposed in the housing
  • the electrode ensemble preferably a wound electrode ensemble, ie an electrode ensemble in the form of an electrode winding, consisting of at least a first electrode, a second electrode and a separator provided between them, each electrode at least one protruding to the housing cover
  • pantograph for example in the form of one or more
  • the battery cell according to the invention has a plastic component, which encloses the current collector of the first electrode and the current collector of the second electrode separately from each other and a current passage from the electrodes to the terminals allows.
  • the battery cell according to the invention can be a high-capacity battery cell, which preferably has a charge storage capacity of> 5Ah, more preferably> 60Ah.
  • the battery cell according to the invention consequently has a vertical or vertical
  • Electrode ensembles leads to a better utilization of the available space in the housing of the battery cell. In case of damage to the
  • the plastic component is provided in the battery cell according to the invention, although the current collector without interruption of the electrode ensemble leads to the terminals but the space surrounding the pantograph inside the housing separates so that a space between the
  • Housing cover of the housing and the plastic component and a space between the plastic component and the electrode ensemble are separated from each other so that at least the electrode ensemble of the
  • Plastic component is covered. This allows the plastic component
  • the plastic component preferably has a height between 1 mm and 4 mm, more preferably about 2 mm, to sufficient mass with a lower melting point compared to the
  • the plastic component is a umspritztes around the current collector around component, ie, a plastic component produced by encapsulation. This can ensure that the plastic component is a one-piece component that the
  • the plastic component is a separate molding that the / the
  • the plastic component may for this purpose have an outer shape, which consists of at least two parts which can engage with each other, wherein the at least two parts are preferably identical.
  • the shape of each of the two parts may have an elongated bar-like shape, in which on one longitudinal side two indentations or
  • Recesses are provided, in which the pantograph can be used at least partially.
  • connecting elements may be provided on the long sides in contact with each other, for example in the form of latching hooks and barbs, or latching hooks and corresponding snap hook receptacles or eyelets, wherein the
  • hook can connect with the respective corresponding barbs or eyes in the opposite part.
  • a compound of the two parts of the plastic component can be provided separable again.
  • the two parts are identical, ie with the same connecting elements or corresponding openings provided at the same locations, in which case must be rotated by 180 ° to each other in an assembly of the two parts, so that the connecting elements can connect the two parts accordingly.
  • a structurally identical shape of the two parts has the advantage of a simplified production and an unnecessary pre-sorting of
  • the plastic component may alternatively consist of more than two parts.
  • the plastic component may consist of two parts, which are connected at one end by a hinge, wherein preferably the other ends of the two parts can engage with each other, preferably by corresponding
  • Connecting elements such as by means of a hook-barb combination, a hook-eye combination or the like, as already described above.
  • a joint here is one
  • Film hinge or the like meant that the two parts of the
  • Plastic components regardless of the separate or joined together design, provided for compressing the pantograph sections of the plastic component, so for example, the aforementioned indentations or recesses in the parts of the
  • Plastic component provided with a further plastic, for example in the form of a sealing lip.
  • a tight entrapment of the pantograph can be ensured by the plastic component.
  • the further plastic may be an elastomeric plastic, such as polyurethane or ethylene-propylene-diene rubber.
  • PE polyethylene
  • PP polypropylene
  • PFA perfluoroalkoxyalkane
  • PET polyethylene terephthalate
  • Polyphenylene sulfide Preference is given to high-melting types, such as PET, PPS or PFA, since molten material, such as hot aluminum at over 500 ° C can drip on the plastic component and this should withstand such temperatures.
  • the plastic component preferably has a height of 3mm to 4mm to provide sufficient mass with a lower melting point as compared to the molten material through which the molten material must penetrate.
  • height is meant here the dimension of the plastic component which extends from the electrode ensemble in the direction of the lid of the housing.
  • the plastic component can be provided with a further plastic at its periphery facing the housing, that is to say at its outer circumference, which lies opposite the inside of the housing, preferably in the form of a sealing lip, in order to close as closely as possible the space surrounding the current collector within the housing ,
  • a space between the housing cover of the housing and the plastic component and a space between the plastic component and the electrode ensemble can be separated from one another such that the electrode ensemble is completely covered by the plastic component.
  • a passage opening may be provided in the plastic component, which the space between the
  • Plastic component and the electrode ensemble controlled together connects, and passes through an electrolyte filled from above to the electrode ensemble.
  • a part of each current collector which is arranged between the plastic component and the housing cover, have a smaller line cross-section than the part of each current collector, which is arranged between the plastic component and the electrode ensemble.
  • Electrode ensemble has a comparatively wider line cross-section.
  • a battery which has at least two of the battery cells described above, wherein the battery cells are connected in series or in parallel with each other.
  • Electrode ensembles can be made better use of a space available in the housing of the battery cell, in that the entire ensemble of electrodes due to the absence of the lateral current collectors
  • Lengthwise of the housing can be wider. Due to this overall wider electrode ensemble in the battery cell housing can in comparison to a battery cell with the same size housing but horizontal arrangement of
  • Plastic component may also protect the electron ensemble from splashes between the foil layers downwards, which may occur when, for example, the individual foil layers are welded to each other or to the lid when the lid is welded to the housing, or when due to a short circuit several of the film layers melt.
  • Figure 1 shows a schematic side view of a preferred embodiment
  • FIG. 2 shows a sectional detailed view along the line A-A in FIG.
  • FIG. 1 A first figure.
  • Figures 3a-c show a plastic component in different
  • FIG. 4a & b show a plastic component of another embodiment of a battery cell according to the invention in open and closed state; and FIG. 5 shows a schematic side view of a battery cell according to the prior art.
  • Figure 1 shows a schematic side view of a preferred embodiment
  • the battery cell 1 has a housing 2 in the form of a cuboid open on one side with a cavity 21, a housing cover 3 with terminals 31, 32 provided therein, and an electrode ensemble 4 arranged in the housing 2 consisting of at least a first electrode, a second electrode and a between these intended separator, wherein each electrode has at least one to the housing cover 3 protruding current collector 51, 52.
  • a ready assembled state of the battery cell 1 is the
  • Electrode ensemble 4 arranged in the cavity 21 of the housing 2 and the housing cover 3 is welded to the upper edge of the housing 2.
  • the battery cell 1 has a plastic member 6 enclosing the first electrode collector (s) 51 and the second electrode collector (s) 52 separately from each other and one
  • connection 31 assumes the function of the positive pole and the connection 31 the function of the negative pole, or vice versa. As can also be seen in FIG.
  • each current collector 51, 52 which is arranged between the plastic component 6 and the housing cover 3 has a line cross-section Q1 which is smaller than a line cross-section Q2 of a part of each current collector 51, 52 which is between the plastic component 6 and the electrode ensemble 4 is arranged.
  • the part of each current collector 51, 52 which has the smallest line cross-section, is arranged between the housing cover 3 and the plastic component 6.
  • a potential melting or melting of a current collector 51, 52 in the event of a short circuit would correspondingly occur at the part with the lowest
  • FIG. 2 shows a sectional detailed view of this arrangement along the line AA in FIG. 1.
  • a plurality of current collectors 51 of the electrode assembly 4 between two halves 61, 62 of the plastic component 6 is arranged compressed.
  • the point 7 is the point at which the current collector 51 is arranged closest to and thus closest to the point
  • FIG. 3 a shows a preferred embodiment of the plastic component 6 of the preferred embodiment of the battery cell 1 according to the invention.
  • the plastic component 6 consists of a first half 61 and a second half
  • the first half 61 has two
  • connecting elements are provided on both halves 61, 62, here in the form of latching hooks 64 on the first half 61 as well corresponding detent eyes (not shown) in the second half 62, in which the latching hooks 64 can engage.
  • FIG. 3b shows an alternative embodiment of a plastic component 6 ', in which the two halves 61', 62 'are of identical construction, in which therefore the latching hooks 64' and the corresponding latching eyes (not shown) are arranged identically.
  • the two halves 61 ', 62' In order now to assemble the two halves 61 ', 62', they only need to be rotated by 180 ° about their central axis, so that the halves 61 'and 62' match one another.
  • the remaining structure of the plastic component 6 ' corresponds to that of the plastic component 6 as shown in Figure 3a.
  • the plastic component 6 as shown in Figure 3a.
  • Recesses or recesses is this embodiment of the plastic component 6 'similar to the embodiment shown in Figure 3a.
  • the identical construction of the two halves 61 ', 62' brings the advantage of a simplified production and an unnecessary pre-sorting of the components with it.
  • 3c shows a further alternative embodiment of a plastic component 6 ".
  • a hook-to-hook connection 66 is provided thereon. which can be locked in place so that the two halves 61 ", 62" are then firmly connected to one another.
  • this embodiment of the plastic component is
  • Figures 4a and 4b show a further alternative embodiment of a
  • Plastic component 6 '' which is largely identical to the embodiment shown in Figure 3a of the plastic component 6.
  • the plastic component 6 "'again consists of a first half 61''and a second half 62'', which can pass between two through openings through which the current collectors 51, 52 can extend in the assembled state as shown in Figures 1 and 2.
  • in the first half 61 "'two indentations or recesses 611"' and corresponding ones are provided
  • sealing lips 67 are provided in the indentations or recesses 611"' and 621 “', which consist of an elastomeric plastic, such as polyurethane or ethylene-propylene-diene rubber, so that a tight clamping of the current collectors 51, 52 by the plastic component 6 "'can be ensured.
  • Conductor films as current collectors 51, 52 reduces the risk of squeezing the films when attaching the plastic component 6 "'.
  • the sealing lips 67 are produced during the production of the plastic component 6"' by means of a two-component injection molding process. Such a sealing lip would also be conceivable on the outer edge of the plastic component 6 "'towards the edge of the housing 2 in order to achieve the greatest possible separation between a space between the housing cover 3 and the plastic component 6"' and a space between the plastic component 6 "'and the In any case, when using one or more sealing lips 67, an additional recess in the plastic component 6 "'must be provided in order to provide an electrolyte filling opening, depending on the position of a potential bursting valve. Such an additional recess is in the

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Sealing Battery Cases Or Jackets (AREA)
  • Connection Of Batteries Or Terminals (AREA)

Abstract

L'invention concerne une cellule de batterie (1) qui comporte un boîtier (2), un couvercle de boîtier (3) dans lequel sont prévues des bornes (31, 32), un ensemble d'électrodes (4) disposé dans le boîtier (2) et constitué d'au moins une première électrode, d'une seconde électrode et d'un séparateur disposé entre elles, chaque électrode comportant au moins un collecteur de courant (51, 52) saillant en direction du couvercle de boîtier (3), et un composant en matière plastique (6) qui entoure les collecteurs de courant (51, 52) de la première électrode et de la seconde électrode en les séparant et une traversée de courant allant des électrodes aux bornes (31, 32). En outre, l'invention concerne une batterie qui comporte au moins deux telles cellules de batterie (1). Les cellules de batterie (1) sont montées en série ou en parallèle.
PCT/EP2016/050412 2015-01-21 2016-01-12 Cellule de batterie pourvue d'un composant en matière plastique et batterie Ceased WO2016116321A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201680006582.1A CN107112450B (zh) 2015-01-21 2016-01-12 具有塑料构件的电池单池以及电池

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102015200911.4A DE102015200911A1 (de) 2015-01-21 2015-01-21 Batteriezelle mit Kunststoffbauteil, sowie Batterie
DE102015200911.4 2015-01-21

Publications (1)

Publication Number Publication Date
WO2016116321A1 true WO2016116321A1 (fr) 2016-07-28

Family

ID=55135209

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2016/050412 Ceased WO2016116321A1 (fr) 2015-01-21 2016-01-12 Cellule de batterie pourvue d'un composant en matière plastique et batterie

Country Status (3)

Country Link
CN (1) CN107112450B (fr)
DE (1) DE102015200911A1 (fr)
WO (1) WO2016116321A1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102016225252A1 (de) * 2016-12-16 2018-06-21 Robert Bosch Gmbh Elektrischer Energiespeicher, insbesondere Batteriezelle, mit Bauraum-optimierter Elektrodenverschaltung
EP4564532A1 (fr) * 2023-11-29 2025-06-04 Volvo Car Corporation Élément de batterie, module de batterie et véhicule comprenant un élément de batterie ou un module de batterie

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2328211A1 (fr) * 2009-11-30 2011-06-01 Samsung SDI Co., Ltd. Batterie secondaire
DE102011077295A1 (de) * 2011-06-09 2012-12-13 Sb Limotive Company Ltd. Lithium-Ionen-Batteriezelle mit verbessertem Wärmetransport
US20140072857A1 (en) * 2012-09-10 2014-03-13 Samsung Sdi Co., Ltd. Cap assembly and battery pack having the same
WO2014122082A1 (fr) * 2013-02-06 2014-08-14 Robert Bosch Gmbh Récipient pour électrolyte, élément de batterie, véhicule à moteur et procédé de fabrication d'un élément de batterie

Family Cites Families (7)

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Publication number Priority date Publication date Assignee Title
JPH06215755A (ja) * 1993-01-18 1994-08-05 Matsushita Electric Ind Co Ltd 薄型電池およびその製造法
JP4556428B2 (ja) * 2003-12-24 2010-10-06 株式会社Ｇｓユアサ 電池
KR100570625B1 (ko) * 2004-07-28 2006-04-12 삼성에스디아이 주식회사 이차 전지
JP3919778B2 (ja) * 2004-08-17 2007-05-30 Ｎｅｃトーキン株式会社 密閉型電池
JP5094215B2 (ja) * 2007-05-30 2012-12-12 三洋電機株式会社 電池および組電池
JP5331085B2 (ja) * 2010-11-09 2013-10-30 三菱重工業株式会社 電池
US9472802B2 (en) * 2011-07-25 2016-10-18 Samsung Sdi Co., Ltd. Secondary battery

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2328211A1 (fr) * 2009-11-30 2011-06-01 Samsung SDI Co., Ltd. Batterie secondaire
DE102011077295A1 (de) * 2011-06-09 2012-12-13 Sb Limotive Company Ltd. Lithium-Ionen-Batteriezelle mit verbessertem Wärmetransport
US20140072857A1 (en) * 2012-09-10 2014-03-13 Samsung Sdi Co., Ltd. Cap assembly and battery pack having the same
WO2014122082A1 (fr) * 2013-02-06 2014-08-14 Robert Bosch Gmbh Récipient pour électrolyte, élément de batterie, véhicule à moteur et procédé de fabrication d'un élément de batterie

Also Published As

Publication number Publication date
CN107112450B (zh) 2020-03-27
DE102015200911A1 (de) 2016-07-21
CN107112450A (zh) 2017-08-29

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