WO2019134697A1 - 电池单元、电池模组及汽车 - Google Patents

电池单元、电池模组及汽车 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
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WO
WIPO (PCT)
Prior art keywords
pole
battery unit
expansion
tab
cavity portion
Prior art date
Application number
PCT/CN2019/070630
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English (en)
French (fr)
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/zh

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    • 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

一种电池单元(100)，包括外壳(3)、盖板(4)、极柱(5)和极芯，外壳(3)具有开口(32)，盖板(4)封盖开口(32)，极芯设置在外壳(3)内，盖板(4)包括盖板本体(42)以及设置在盖板本体(42)上的向内凹陷的凹腔部(41)，极柱(5)容纳在凹腔部(41)中。

Description

电池单元、电池模组及汽车
相关申请的交叉引用
本申请要求2018年1月8日递交的、申请号为201810015504.9、201810016060.0、201810015506.8、201810016052.6、201810015502.X、201810016520.X、201810015503.4、201810016056.4的中国专利申请的优先权；本申请要求2018年5月17日递交的、申请号为201810476313.2的中国专利申请的优先权。
技术领域
本申请涉及电池领域，一些实施例中涉及一种电池单元、电池模组及汽车。
背景技术
随着科技的发展，各种电子设备、电动工具等得到广泛应用，例如手机、电动车辆等，作为核心部件，电池的性能对整体的性能及使用体验具有重要影响；其中，电池的容量决定了整体的续航，也是使用者的重要关注点。
电池包括外壳和设置在外壳中的极芯，电池单元的体积从一定程度上决定了极芯的体积，是电池容量的重要决定因素，在电子设备、电动工具中，电池所在的安装环境基本决定了电池所占用的空间大小，电池的整体体积难以不受限制地增加，电池的容量因此也受到限制。
申请内容
本申请的目的是提供一种电池单元，以在存在空间限制的情况下增加电池容量。
为了实现上述目的，本申请提供了一种电池单元，其中，所述电池单元包括外壳、盖板、极柱和极芯，所述外壳具有开口，所述盖板封盖所述开口，所述极芯设置在所述外壳内，所述盖板包括盖板本体以及设置在所述盖板本体上的向内凹陷的凹腔部，所述极柱容纳在所述凹腔部中。
根据本申请的一些实施例，所述极芯包括具有扩容端的极芯主体，所述扩容端设置有极柱适配区和相对于所述极柱适配区凸出的扩容区，所述极柱适配区相对于所述扩容区凹陷而形成极柱安装空间，所述极柱穿过所述凹腔部并朝向所述极柱适配区延伸，所述极柱和所述凹腔部至少部分地设置在所述极柱安装空间中，所述扩容区对齐所述盖板本体。
根据本申请的一些实施例，所述极柱适配区通过所述扩容区环绕。
根据本申请的一些实施例，所述凹腔部包括管状侧壁和环形底壁，所述极柱伸入所述管状侧壁并穿过所述环形底壁。
根据本申请的一些实施例，所述极柱和所述管状侧壁之间设置有填充物。
根据本申请的一些实施例，所述盖板包括两个间隔设置的所述凹腔部，所述扩容端设置有两个间隔设置的极柱适配区，两个所述凹腔部分别与两个所述极柱适配区配合。
根据本申请的一些实施例，所述盖板包括两个相邻设置的所述凹腔部，两个所述凹腔部设置在同一个所述极柱适配区。
根据本申请的一些实施例，所述极芯包括连接于所述极柱适配区的极耳。
根据本申请的一些实施例，所述极芯包括连接于所述扩容区并延伸到所述极柱适配区的极耳。
根据本申请的一些实施例，所述极耳与所述极芯主体一体成型。
根据本申请的一些实施例，所述极耳贴合于所述扩容区。
根据本申请的一些实施例，所述极柱连接于所述极耳。
根据本申请的一些实施例，所述凹腔部的内侧设置有与所述极柱连接的内引出片，所述极柱通过所述内引出片连接于所述极耳。
根据本申请的一些实施例，所述极柱相对于所述盖板本体向外凸出。
另外，本申请提供了一种电池模组，其中，所述电池模组包括以上方案所述的电池单元。
另外，本申请还提供了一种汽车，其中，所述汽车包括至少一个以上方案所述的电池模组。
通过上述技术方案，盖板本体的高度相对于凹腔部向外提升，占用了凹腔部也就是极柱附近的空间，增加了电池单元的内部容积，允许极芯具有更大的体积，可以增加电池单元的容量。
本申请的附加方面和优点将在下面的描述中部分给出，部分将从下面的描述中变得明显，或通过本申请的实践了解到。
附图说明
图1是本申请实施方式所述的电池单元的立体图；
图2是本申请实施方式所述的电池单元的剖视图；
图3是图2的部分放大图；
图4是本申请实施方式所述的极芯的立体图；
图5是本申请实施方式所述的极芯的立体图；
图6是本申请实施方式所述的电池模组的示意图；
图7是本申请实施方式所述的汽车的示意图。
附图标记说明
100   电池单元            200  电池模组
300   汽车
1     极芯主体            2    极耳
3     外壳                4    盖板
5     极柱                6    内引出片
11    扩容端
111 扩容区              112  极柱适配区
41 凹腔部               42 盖板本体
具体实施方式
下面详细描述本申请的实施例，所述实施例的示例在附图中示出，其中自始至终相同或类似的标号表示相同或类似的元件或具有相同或类似功能的元件。下面通过参考附图描述的实施例是示例性的，旨在用于解释本申请，而不能理解为对本申请的限制。
本申请提供了一种电池单元100，其中，所述电池单元100包括外壳3、盖板4、极柱5和极芯，所述外壳3具有开口32，所述盖板4封盖所述开口32，所述极芯设置在所述外壳3内，所述盖板4包括盖板本体42以及设置在所述盖板本体42上的向内凹陷的凹腔部41，所述极柱5容纳在所述凹腔部41中。
如图1和图2所示，盖板本体42大致形成为平板状，凹腔部41相对盖板本体42凹陷，极柱5容纳在凹腔部41中并可以与用电设备连接。在现有技术中，盖板4整体大致为平板状，极柱5穿过盖板4而延伸到外部，与之相比，本申请相当于提升了盖板4的整体高度，使得外壳3与盖板4组成的腔体的体积增加，便于增加所述极芯的体积，实现扩容。
一些实施例中，所述极芯包括具有扩容端11的极芯主体1，所述扩容端11设置有极柱适配区112和相对于所述极柱适配区112凸出的扩容区111，所述极柱适配区112相对于所述扩容区111凹陷而形成极柱安装空间，所述极柱5穿过所述凹腔部41并朝向所述极柱适配区112延伸，所述极柱5和所述凹腔部41至少部分地设置在所述极柱安装空间中，所述扩容区111对齐所述盖板本体42。
扩容端11通过盖板4覆盖，扩容端11被极柱5和凹腔部41占用的区域为极柱适配区112，未被极柱5和凹腔部41占用的区域朝向盖板4凸出而形成扩容区111，增加了极芯主体1的体积，从而实现了扩容。极柱适配区112相对于扩容区凹陷形成极柱安装空间，极柱5和凹腔部41至少部分地容纳在该极柱安装空间中。
另外，所述极柱适配区112通过所述扩容区111环绕。图4和图5显示的极芯中，极柱适配区112设置在两个扩容区111之间，大致呈圆柱状的凹腔部41可以容纳在两个扩容区111之间的所述极柱安装空间中，所述极柱安装空间大致形成为六面体形状。为了一些实施例中增加极芯主体1的体积，可以形成为大致呈圆柱形的所述极柱安装空间，即极柱适配区112通过扩容区111环绕，围成截面为圆形的凹陷，以容纳圆柱形的凹腔部41。
一些实施例中，所述凹腔部41包括管状侧壁和环形底壁，所述极柱5伸入所述管状侧壁并穿过所述环形底壁。如图2和图3所示，凹腔部41通过管状侧壁和环形底壁共同形成，环形底壁设置有通孔以允许极柱5穿过。凹腔部41的形状与极柱5的圆柱形形状对应，可以充分地减小凹腔部41所占体积，当然极柱5也可以形成为其他形状，例如，六棱柱、长方体形状等。
另外，所述极柱5和所述管状侧壁之间设置有填充物。极柱5与所述管状侧壁通过填充物间隔，所述填充物可以为绝缘材料制成，并且所述填充物可以具有弹性，对极柱5与所述管状侧壁进行缓冲。
根据本申请的一种实施方式，所述盖板4包括两个间隔设置的所述凹腔部41，所述扩容端11设置有两个间隔设置的极柱适配区112，两个所述凹腔部41分别与两个所述极柱适配区112配合。如图2、图3、图4、图5所示，扩容端11设置有两个极柱适配区112，可以分别安装两个极柱5，对应的盖板4设置有两个凹腔部41，两个凹腔部41分别设置在两个极柱适配区112处。
根据本申请的一种实施方式，所述盖板4包括两个相邻设置的所述凹腔部41，两个所述凹腔部41设置在同一个所述极柱适配区112。两个凹腔部41的距离较近时，极芯主体1上可以设置一个极柱适配区112，极柱适配区112凹陷形成的极柱安装空间可以同时容纳两个凹腔部41。
另外，所述极芯包括连接于所述极柱适配区112的极耳2。如图4所示，极耳2连接于极柱适配区112，可以与极柱5电连接。
可替代地，所述极芯包括连接于所述扩容区111并延伸到所述极柱适配区112的极耳2。如图5所示，极耳2连接于扩容区111并可以延伸到极柱适配区112，以与对应的极柱5电连接。
根据本申请的一些实施例，所述极耳2与所述极芯主体1一体成型。极耳2和极芯主体1由制成极芯的材料一体成型制成，极耳2包括作为正极和负极的两个极耳。当然，在其他实施方式中，极耳2也可以另外加工制成并连接到极芯主体1上。
如上所述，所述极柱5连接于所述极耳2。极柱5与极耳2可以直接连接，也可以 通过其他结构而连接。
根据本申请的一些实施例，所述凹腔部41的内侧设置有与所述极柱5连接的内引出片6，所述极柱5通过所述内引出片6连接于所述极耳2。如图3所示，凹腔部41的内侧为朝向所述极芯的一侧，凹腔部41设置在极柱适配区112(图3未标记)中，内引出片6可以贴合在凹腔部41的环形底壁上，极柱5连接于内引出片6，并通过内引出片6与位于极柱适配区112的极耳2电连接。
另外，所述极柱5相对于所述盖板本体42向外凸出。如图1中所示，极柱5的上端相对于盖板本体42向外凸出，即极柱5高于盖板本体42的外表面，外部用电设备可以更方便地连接于极柱5。
另外，如图6所示，本申请还提供了一种电池模组，其中，所述电池模组包括以上方案所述的电池单元。所述电池模组200可以包括多个所述电池单元100，多个电池单元100以串联或并联方式连接而供电。
另外，如图7所示，本申请还提供了一种汽车300，其中，所述汽车300包括至少一个以上方案所述的电池模组200。
在本申请的描述中，需要理解的是，术语“中心”、“纵向”、“横向”、“长度”、“宽度”、“厚度”、“上”、“下”、“前”、“后”、“左”、“右”、“竖直”、“水平”、“顶”、“底”“内”、“外”、“顺时针”、“逆时针”、“轴向”、“径向”、“周向”等指示的方位或位置关系为基于附图所示的方位或位置关系，仅是为了便于描述本申请和简化描述，而不是指示或暗示所指的装置或元件必须具有特定的方位、以特定的方位构造和操作，因此不能理解为对本申请的限制。
此外，术语“第一”、“第二”仅用于描述目的，而不能理解为指示或暗示相对重要性或者隐含指明所指示的技术特征的数量。由此，限定有“第一”、“第二”的特征可以明示或者隐含地包括一个或者更多个该特征。在本申请的描述中，“多个”的含义是两个以上，除非另有明确具体的限定。
在本申请中，除非另有明确的规定和限定，术语“安装”、“相连”、“连接”、“固定”等术语应做广义理解，例如，可以是固定连接，也可以是可拆卸连接，或成一体；可以是机械连接，也可以是电连接；可以是直接相连，也可以通过中间媒介间接相连，可以是两个元件内部的连通或两个元件的相互作用关系。对于本领域的普通技术人员而言，可以根据具体情况理解上述术语在本申请中的具体含义。
在本申请中，除非另有明确的规定和限定，第一特征在第二特征“上”或“下”可以是第一和第二特征直接接触，或第一和第二特征通过中间媒介间接接触。而且，第一特征在第二特征“之上”、“上方”和“上面”可是第一特征在第二特征正上方或斜上 方，或仅仅表示第一特征水平高度高于第二特征。第一特征在第二特征“之下”、“下方”和“下面”可以是第一特征在第二特征正下方或斜下方，或仅仅表示第一特征水平高度小于第二特征。
在本说明书的描述中，参考术语“一个实施例”、“一些实施例”、“示例”、“具体示例”、或“一些示例”等的描述意指结合该实施例或示例描述的具体特征、结构、材料或者特点包含于本申请的至少一个实施例或示例中。在本说明书中，对上述术语的示意性表述不必须针对的是相同的实施例或示例。而且，描述的具体特征、结构、材料或者特点可以在任一个或多个实施例或示例中以合适的方式结合。此外，在不相互矛盾的情况下，本领域的技术人员可以将本说明书中描述的不同实施例或示例以及不同实施例或示例的特征进行结合和组合。
尽管上面已经示出和描述了本申请的实施例，可以理解的是，上述实施例是示例性的，不能理解为对本申请的限制，本领域的普通技术人员在本申请的范围内可以对上述实施例进行变化、修改、替换和变型。

Claims (16)

  1. 一种电池单元(100)，其特征在于，所述电池单元(100)包括外壳(3)、盖板(4)、极柱(5)和极芯，所述外壳(3)具有开口(32)，所述盖板(4)封盖所述开口(32)，所述极芯设置在所述外壳(3)内，所述盖板(4)包括盖板本体(42)以及设置在所述盖板本体(42)上的向内凹陷的凹腔部(41)，所述极柱(5)容纳在所述凹腔部(41)中。
  2. 根据权利要求1所述的电池单元(100)，其特征在于，所述极芯包括具有扩容端(11)的极芯主体(1)，所述扩容端(11)设置有极柱适配区(112)和相对于所述极柱适配区(112)凸出的扩容区(111)，所述极柱适配区(112)相对于所述扩容区(111)凹陷而形成极柱安装空间，所述极柱(5)穿过所述凹腔部(41)并朝向所述极柱适配区(112)延伸，所述极柱(5)和所述凹腔部(41)至少部分地设置在所述极柱安装空间中，所述扩容区(111)对齐所述盖板本体(42)。
  3. 根据权利要求2所述的电池单元(100)，其特征在于，所述极柱适配区(112)通过所述扩容区(111)环绕。
  4. 根据权利要求3所述的电池单元(100)，其特征在于，所述凹腔部(41)包括管状侧壁和环形底壁，所述极柱(5)伸入所述管状侧壁并穿过所述环形底壁。
  5. 根据权利要求4所述的电池单元(100)，其特征在于，所述极柱(5)和所述管状侧壁之间设置有填充物。
  6. 根据权利要求2所述的电池单元(100)，其特征在于，所述盖板(4)包括两个间隔设置的所述凹腔部(41)，所述扩容端(11)设置有两个间隔设置的极柱适配区(112)，两个所述凹腔部(41)分别与两个所述极柱适配区(112)配合。
  7. 根据权利要求2所述的电池单元(100)，其特征在于，所述盖板(4)包括两个相邻设置的所述凹腔部(41)，两个所述凹腔部(41)设置在同一个所述极柱适配区(112)。
  8. 根据权利要求2所述的电池单元(100)，其特征在于，所述极芯包括连接于所述极柱适配区(112)的极耳(2)。
  9. 根据权利要求2所述的电池单元(100)，其特征在于，所述极芯包括连接于所述扩容区(111)并延伸到所述极柱适配区(112)的极耳(2)。
  10. 根据权利要求8或9所述的电池单元(100)，其特征在于，所述极耳(2)与所述极芯主体(1)一体成型。
  11. 根据权利要求8或9所述的电池单元(100)，其特征在于，所述极耳(2)贴合于所述扩容区(111)。
  12. 根据权利要求8或9所述的电池单元(100)，其特征在于，所述极柱(5)连接于所述极耳(2)。
  13. 根据权利要求12所述的电池单元(100)，其特征在于，所述凹腔部(41)的内侧设置有与所述极柱(5)连接的内引出片(6)，所述极柱(5)通过所述内引出片(6)连接于所述极耳(2)。
  14. 根据权利要求1所述的电池单元(100)，其特征在于，所述极柱(5)相对于所述盖板本体(42)向外凸出。
  15. 一种电池模组(200)，其特征在于，所述电池模组(200)包括权利要求1-14中任意一项所述的电池单元(100)。
  16. 一种汽车(300)，其特征在于，所述汽车(300)包括至少一个权利要求15所述的电池模组(200)。
PCT/CN2019/070630 2018-01-08 2019-01-07 电池单元、电池模组及汽车 WO2019134697A1 (zh)

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