WO2019134697A1 - Unité de batterie, module de batterie, et véhicule - Google Patents

Unité de batterie, module de batterie, et véhicule Download PDF

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Publication number
WO2019134697A1
WO2019134697A1 PCT/CN2019/070630 CN2019070630W WO2019134697A1 WO 2019134697 A1 WO2019134697 A1 WO 2019134697A1 CN 2019070630 W CN2019070630 W CN 2019070630W WO 2019134697 A1 WO2019134697 A1 WO 2019134697A1
Authority
WO
WIPO (PCT)
Prior art keywords
pole
battery unit
expansion
tab
cavity portion
Prior art date
Application number
PCT/CN2019/070630
Other languages
English (en)
Chinese (zh)
Inventor
胡世超
蒋露霞
潘仪
程晗
Original Assignee
比亚迪股份有限公司
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
Priority claimed from CN201810476313.2A external-priority patent/CN110021719B/zh
Application filed by 比亚迪股份有限公司 filed Critical 比亚迪股份有限公司
Publication of WO2019134697A1 publication Critical patent/WO2019134697A1/fr

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Classifications

    • 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
    • H01M50/147—Lids or covers
    • 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
    • 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 application relates to the field of batteries, and some embodiments relate to a battery unit, a battery module, and an automobile.
  • the battery includes a casing and a pole core disposed in the casing.
  • the volume of the battery unit determines the volume of the core core to a certain extent, and is an important determinant of the battery capacity.
  • the installation environment of the battery is basically determined. With the size of the space occupied by the battery, the overall volume of the battery is difficult to increase without limitation, and the capacity of the battery is also limited.
  • the present application provides a battery unit, wherein the battery unit includes a casing, a cover plate, a pole and a pole core, the casing has an opening, and the cover covers the opening, A pole core is disposed within the outer casing, the cover plate including a cover body and an inwardly recessed cavity portion disposed on the cover body, the pole being received in the cavity portion.
  • the pole core includes a pole core body having a expansion end, the expansion end is provided with a pole fitting region and a expansion region protruding relative to the pole fitting region, the pole a column fitting region is recessed relative to the expansion region to form a pole mounting space, the pole portion extends through the cavity portion and extends toward the pole fitting region, the pole portion and the cavity portion At least partially disposed in the pole mounting space, the expansion zone is aligned with the cover body.
  • the pole fitting region is surrounded by the expansion region.
  • the cavity portion includes a tubular side wall and an annular bottom wall that extends into the tubular side wall and through the annular bottom wall.
  • a filler is disposed between the pole and the tubular sidewall.
  • the cover plate includes two spaced apart cavity portions, and the expansion end is provided with two spaced pole fitting regions, and the two concave portions are respectively The two pole fitting regions cooperate.
  • the cover plate includes two adjacent cavity portions, and the two cavity portions are disposed in the same one of the pole fitting regions.
  • the pole core includes a tab attached to the pole fitting region.
  • the pole core includes a tab that is coupled to the expansion zone and that extends to the pole fitting region.
  • the tab is integrally formed with the pole core body.
  • the tabs are attached to the expansion zone.
  • the pole is attached to the tab.
  • the inner side of the cavity portion is provided with an inner lead piece connected to the pole, and the pole is connected to the tab through the inner lead piece.
  • the pole protrudes outwardly relative to the cover body.
  • the present application provides a battery module, wherein the battery module includes the battery unit described in the above scheme.
  • the present application also provides an automobile, wherein the automobile includes at least one battery module described in the above aspect.
  • the height of the cover body is raised outward relative to the cavity portion, occupying a space near the cavity portion, that is, a pole, increasing the internal volume of the battery unit, allowing the pole core to have a larger volume, Increase the capacity of the battery unit.
  • FIG. 1 is a perspective view of a battery unit according to an embodiment of the present application.
  • FIG. 2 is a cross-sectional view of the battery unit according to an embodiment of the present application.
  • Figure 3 is a partial enlarged view of Figure 2;
  • FIG. 4 is a perspective view of a pole core according to an embodiment of the present application.
  • Figure 5 is a perspective view of a pole core according to an embodiment of the present application.
  • FIG. 6 is a schematic diagram of a battery module according to an embodiment of the present application.
  • Fig. 7 is a schematic view of a car according to an embodiment of the present application.
  • the present application provides a battery unit 100, wherein the battery unit 100 includes a housing 3, a cover 4, a pole 5 and a pole core, the housing 3 having an opening 32, the cover 4 covering the opening 32.
  • the pole core is disposed in the outer casing 3.
  • the cover plate 4 includes a cover body 42 and an inwardly recessed cavity portion 41 disposed on the cover body 42.
  • the pole 5 accommodates In the cavity portion 41.
  • the cover body 42 is formed substantially in a flat shape, and the cavity portion 41 is recessed relative to the cover body 42.
  • the pole post 5 is received in the cavity portion 41 and is connectable to the electric device.
  • the cover plate 4 is substantially flat in shape, and the pole 5 extends through the cover plate 4 to the outside.
  • the present application is equivalent to raising the overall height of the cover plate 4, so that the outer casing 3 and the outer casing 3
  • the volume of the cavity formed by the cover plate 4 is increased, which is convenient for increasing the volume of the pole core and realizing expansion.
  • the pole core includes a pole core body 1 having a flared end 11 that is provided with a pole fitting region 112 and a expansion region 111 that is convex relative to the pole fitting region 112.
  • the pole fitting region 112 is recessed relative to the expansion region 111 to form a pole mounting space, and the pole 5 passes through the cavity portion 41 and extends toward the pole fitting region 112.
  • the pole 5 and the cavity portion 41 are at least partially disposed in the pole mounting space, and the expansion region 111 is aligned with the cover body 42.
  • the expansion end 11 is covered by the cover 4, and the area occupied by the pole 5 and the cavity 41 is the pole fitting area 112, and the area not occupied by the pole 5 and the cavity 41 is convex toward the cover 4.
  • the expansion region 111 is formed to increase the volume of the pole core body 1, thereby realizing expansion.
  • the pole fitting region 112 is recessed relative to the expansion region to form a pole mounting space, and the pole post 5 and the cavity portion 41 are at least partially housed in the pole mounting space.
  • the pole fitting region 112 is surrounded by the expansion region 111.
  • the pole fitting region 112 is disposed between the two expansion regions 111, and the substantially cylindrical cavity portion 41 can accommodate the pole between the two expansion regions 111.
  • the pole mounting space is formed substantially in a hexahedral shape.
  • the pole column mounting space may be formed in a substantially cylindrical shape, that is, the pole fitting region 112 is surrounded by the expansion region 111 to enclose a recess having a circular cross section. To accommodate the cylindrical cavity portion 41.
  • the cavity portion 41 includes a tubular side wall and an annular bottom wall that extends into the tubular side wall and through the annular bottom wall. As shown in FIGS. 2 and 3, the cavity portion 41 is formed by a tubular side wall and an annular bottom wall, and the annular bottom wall is provided with a through hole to allow the pole 5 to pass therethrough.
  • the shape of the cavity portion 41 corresponds to the cylindrical shape of the pole 5, and the volume occupied by the cavity portion 41 can be sufficiently reduced.
  • the pole 5 can be formed into other shapes, for example, a hexagonal prism, a rectangular parallelepiped shape, or the like.
  • a filler is disposed between the pole 5 and the tubular side wall.
  • the pole 5 is spaced from the tubular side wall by a filler, the filler may be made of an insulating material, and the filler may have elasticity to cushion the pole 5 and the tubular sidewall.
  • the cover plate 4 includes two spaced-apart cavity portions 41, and the expansion end 11 is provided with two spaced-apart pole fitting regions 112, two of which are The cavity portions 41 are respectively engaged with the two pole fitting regions 112. As shown in FIG. 2, FIG. 3, FIG. 4 and FIG. 5, the expansion end 11 is provided with two pole fitting regions 112, two poles 5 can be respectively installed, and the corresponding cover plate 4 is provided with two concave portions. 41. Two cavity portions 41 are respectively disposed at the two pole fitting regions 112.
  • the cover plate 4 includes two adjacent cavity portions 41, and the two cavity portions 41 are disposed in the same pole fitting region 112.
  • the pole core body 1 may be provided with a pole fitting region 112, and the pole column mounting space formed by the pole fitting region 112 may accommodate the two cavity portions 41 at the same time.
  • the pole core includes a tab 2 that is coupled to the pole fitting region 112. As shown in FIG. 4, the tab 2 is connected to the pole fitting region 112 and can be electrically connected to the pole 5.
  • the pole core includes a tab 2 that is coupled to the expansion zone 111 and that extends to the pole fitting region 112. As shown in FIG. 5, the tabs 2 are connected to the expansion region 111 and may extend to the pole fitting region 112 to be electrically connected to the corresponding poles 5.
  • the tab 2 is integrally formed with the pole core body 1.
  • the tab 2 and the pole core body 1 are integrally formed of a material made into a pole core, and the tab 2 includes two tabs as a positive electrode and a negative electrode.
  • the tab 2 can be additionally fabricated and attached to the pole core body 1.
  • the pole 5 is connected to the tab 2 .
  • the pole 5 and the tab 2 may be directly connected or may be connected by other structures.
  • the inner side of the cavity portion 41 is provided with an inner lead piece 6 connected to the pole 5, and the pole piece 5 is connected to the tab 2 through the inner lead piece 6.
  • the inner side of the cavity portion 41 is a side facing the pole core, and the cavity portion 41 is disposed in the pole fitting region 112 (not labeled in FIG. 3), and the inner lead piece 6 can be attached thereto.
  • the pole 5 is connected to the inner lead piece 6, and is electrically connected to the tab 2 located in the pole fitting region 112 through the inner lead piece 6.
  • the pole 5 protrudes outward relative to the cover body 42.
  • the upper end of the pole 5 protrudes outwardly relative to the cover body 42, that is, the pole 5 is higher than the outer surface of the cover body 42, and external electrical equipment can be more conveniently connected to the pole 5. .
  • the present application further provides a battery module, wherein the battery module includes the battery unit described in the above scheme.
  • the battery module 200 may include a plurality of the battery cells 100, and the plurality of battery cells 100 are connected in series or in parallel to supply power.
  • the present application further provides an automobile 300, wherein the automobile 300 includes at least one battery module 200 described in the above scheme.
  • first and second are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated.
  • features defining “first” and “second” may include one or more of the features either explicitly or implicitly.
  • the meaning of "a plurality” is two or more unless specifically and specifically defined.
  • the terms “installation”, “connected”, “connected”, “fixed” and the like shall be understood broadly, and may be either a fixed connection or a detachable connection, unless otherwise explicitly stated and defined. , or integrated; can be mechanical connection, or can be electrical connection; can be directly connected, or can be indirectly connected through an intermediate medium, can be the internal communication of two elements or the interaction of two elements.
  • installation can be understood on a case-by-case basis.
  • the first feature "on” or “below” the second feature may be the direct contact of the first and second features, or the first and second features are indirectly through the intermediate medium, unless otherwise explicitly stated and defined. contact.
  • the first feature "above”, “above” and “above” the second feature may be that the first feature is directly above or obliquely above the second feature, or merely that the first feature level is higher than the second feature.
  • the first feature “below”, “below” and “below” the second feature may be that the first feature is directly below or obliquely below the second feature, or merely that the first feature level is less than the second feature.

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Battery Mounting, Suspending (AREA)
  • Connection Of Batteries Or Terminals (AREA)

Abstract

La présente invention concerne une unité de batterie (100), comprenant une coque (3), une plaque de recouvrement (4), des montants d'électrode (5) et un noyau d'électrode ; la coque (3) est pourvue d'une ouverture (32) ; la plaque de recouvrement (4) recouvre et scelle l'ouverture (32) ; le noyau d'électrode est disposé dans la coque (3) ; la plaque de recouvrement (4) comprend un corps de plaque de recouvrement (42) et des parties de cavité en retrait vers l'intérieur (41) formées dans le corps de plaque de recouvrement (42) ; et les montants d'électrode (5) sont logés dans les parties de cavité en creux (41).
PCT/CN2019/070630 2018-01-08 2019-01-07 Unité de batterie, module de batterie, et véhicule WO2019134697A1 (fr)

Applications Claiming Priority (18)

Application Number Priority Date Filing Date Title
CN201810016052.6 2018-01-08
CN201810015506.8 2018-01-08
CN201810016056 2018-01-08
CN201810016520 2018-01-08
CN201810015502 2018-01-08
CN201810016060.0 2018-01-08
CN201810015504.9 2018-01-08
CN201810015506 2018-01-08
CN201810016056.4 2018-01-08
CN201810015502.X 2018-01-08
CN201810015504 2018-01-08
CN201810016520.X 2018-01-08
CN201810015503.4 2018-01-08
CN201810016052 2018-01-08
CN201810016060 2018-01-08
CN201810015503 2018-01-08
CN201810476313.2 2018-05-17
CN201810476313.2A CN110021719B (zh) 2018-01-08 2018-05-17 电池单元、电池模组及汽车

Publications (1)

Publication Number Publication Date
WO2019134697A1 true WO2019134697A1 (fr) 2019-07-11

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Application Number Title Priority Date Filing Date
PCT/CN2019/070630 WO2019134697A1 (fr) 2018-01-08 2019-01-07 Unité de batterie, module de batterie, et véhicule

Country Status (1)

Country Link
WO (1) WO2019134697A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113285149A (zh) * 2020-02-18 2021-08-20 比亚迪股份有限公司 一种电池、电池模组、电池包和电动车
CN114284610A (zh) * 2021-12-24 2022-04-05 中创新航科技股份有限公司 电池盖板组件、电池及电池组
CN115149170A (zh) * 2021-03-30 2022-10-04 比亚迪股份有限公司 电池及采用该电池的电子设备

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN201134446Y (zh) * 2007-12-14 2008-10-15 天津力神电池股份有限公司 一种带极耳位的锂离子动力电池整体上垫片
CN101651229A (zh) * 2008-08-14 2010-02-17 三星Sdi株式会社 二次电池
US20140227564A1 (en) * 2013-02-08 2014-08-14 Robert Bosch Gmbh Battery module
CN206259391U (zh) * 2016-11-14 2017-06-16 惠州Tcl金能电池有限公司 异形电池组件

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN201134446Y (zh) * 2007-12-14 2008-10-15 天津力神电池股份有限公司 一种带极耳位的锂离子动力电池整体上垫片
CN101651229A (zh) * 2008-08-14 2010-02-17 三星Sdi株式会社 二次电池
US20140227564A1 (en) * 2013-02-08 2014-08-14 Robert Bosch Gmbh Battery module
CN206259391U (zh) * 2016-11-14 2017-06-16 惠州Tcl金能电池有限公司 异形电池组件

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113285149A (zh) * 2020-02-18 2021-08-20 比亚迪股份有限公司 一种电池、电池模组、电池包和电动车
CN115149170A (zh) * 2021-03-30 2022-10-04 比亚迪股份有限公司 电池及采用该电池的电子设备
CN114284610A (zh) * 2021-12-24 2022-04-05 中创新航科技股份有限公司 电池盖板组件、电池及电池组

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