WO2021068720A1 - 壳体及具有该壳体的电池 - Google Patents

壳体及具有该壳体的电池 Download PDF

Info

Publication number
WO2021068720A1
WO2021068720A1 PCT/CN2020/115669 CN2020115669W WO2021068720A1 WO 2021068720 A1 WO2021068720 A1 WO 2021068720A1 CN 2020115669 W CN2020115669 W CN 2020115669W WO 2021068720 A1 WO2021068720 A1 WO 2021068720A1
Authority
WO
WIPO (PCT)
Prior art keywords
housing
casing
protruding portion
battery
bottom wall
Prior art date
Application number
PCT/CN2020/115669
Other languages
English (en)
French (fr)
Inventor
张国文
马武
黄惠峰
黎桂成
Original Assignee
宁德新能源科技有限公司
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
Application filed by 宁德新能源科技有限公司 filed Critical 宁德新能源科技有限公司
Publication of WO2021068720A1 publication Critical patent/WO2021068720A1/zh
Priority to US17/708,616 priority Critical patent/US20220223955A1/en

Links

Images

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
    • H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
    • H01M50/202—Casings or frames around the primary casing of a single cell or a single battery
    • 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

  • This application relates to the field of batteries, in particular to a casing and a battery with the casing.
  • the existing battery usually includes a casing, a cover, and an electric core.
  • a flange structure is generally used to realize positioning between the cover and the shell, and then the cover and the shell are connected together by welding.
  • the flange structure will occupy the internal space of the battery, resulting in the loss of battery energy density; 2.
  • the positioning accuracy of the flange structure is low, and the welding is easy to cause the battery to leak during welding. Liquid and other issues; 3.
  • the use of flange structure will increase the raw material cost of the battery.
  • a casing includes a first casing and a second casing, the second casing is provided with a protruding part, and the first casing includes:
  • the side wall is arranged on the periphery of the bottom wall to form a receiving space together with the bottom wall; the second housing is arranged on a side of the side wall away from the bottom wall, and the protrusion The part is accommodated in the containing space and contacts the inner surface of the side wall.
  • a plurality of the protrusions are provided on the second housing, and the plurality of protrusions are continuously arranged.
  • a plurality of the protruding portions are provided on the second housing, and the plurality of protruding portions are arranged intermittently and equidistantly or intermittently non-equally spaced.
  • the cross section of the protruding portion is fan-shaped, elliptical, triangular, square, pentagonal, or circular.
  • the height of the protrusion does not exceed 50 mm.
  • the distance from the end of the protruding portion facing the first housing to the side wall is 0-100 mm.
  • the protruding portion protrudes from a surface of the second housing facing the first housing.
  • the protruding part is formed on the inner surface of the second housing, and the outer surface of the second housing forms a groove corresponding to the position of the protruding part.
  • a battery includes an electric core and the aforementioned casing, and the electric core is accommodated in the casing.
  • the battery further includes a pole, and the pole is disposed on the second housing.
  • the protruding portion on the second housing is accommodated in the receiving space and contacts the inner surface of the side wall to define the second housing so that the first housing Accurate positioning is achieved with the second shell, which avoids the phenomenon of welding deviation and liquid leakage during the welding of the first shell and the second shell.
  • the use of the protruding part for positioning also avoids the defect that the traditional positioning structure occupies the internal space of the housing, thereby improving the energy density of the battery.
  • the manufacturing cost of the battery is greatly reduced.
  • FIG. 1 is a schematic cross-sectional view of the housing of Embodiment 1 of the application.
  • Figure 2 is an enlarged view of the position II shown in Figure 1.
  • FIG. 3 is a schematic partial cross-sectional view of a housing of another embodiment of Embodiment 1 of the application.
  • Fig. 4 is a top view of a second housing according to an embodiment of the application.
  • Fig. 5 is a top view of a second housing according to another embodiment of the application.
  • FIG. 6 is a top view of the second housing according to another embodiment of the application.
  • FIG. 7 is a schematic cross-sectional view of a battery according to an embodiment of the application.
  • FIG. 8 is a schematic cross-sectional view of the housing of Embodiment 2 of the application.
  • FIG. 9 is a schematic partial cross-sectional view of a housing of another embodiment of Example 2 of this application.
  • FIG. 10 is a schematic partial cross-sectional view of the housing of Embodiment 3 of the application.
  • FIG. 11 is a schematic partial cross-sectional view of a housing of another embodiment of Example 3 of this application.
  • FIG. 12 is a schematic partial cross-sectional view of the housing of Embodiment 4 of the application.
  • FIG. 13 is a schematic partial cross-sectional view of a housing according to another embodiment of Example 4 of this application.
  • FIG. 14 is a schematic partial cross-sectional view of the housing of Embodiment 5 of the present application.
  • FIG. 15 is a schematic partial cross-sectional view of a housing according to another embodiment of Example 5 of this application.
  • the bottom wall 111 The bottom wall 111
  • an embodiment of the present application provides a housing 10.
  • the housing 10 includes a first housing 11 and a second housing 12.
  • the first housing 11 includes a bottom wall 111 and a side wall 112.
  • the side wall 112 is disposed on the periphery of the bottom wall 111 to form a receiving space 113 together with the bottom wall 111.
  • the shape of the bottom wall 111 can be adaptively adjusted according to actual needs, and can be a regular shape such as a rectangle, a triangle, a circle, or other irregular shapes.
  • the material of the first housing 11 may be metal, plastic, or a composite material of metal and plastic.
  • the metal can be selected from one or more of other metal materials such as steel alloys, aluminum alloys, iron alloys, and copper alloys.
  • a protrusion 13 is provided on the second housing 12.
  • the second housing 12 is disposed on a side of the side wall 112 away from the bottom wall 111, and the protruding portion 13 is accommodated in the receiving space 113 and contacts the inner side of the side wall 112
  • the surface, in this way, is defined by the protrusion 13 to achieve precise positioning between the first housing 11 and the second housing 12.
  • the surface of the protruding portion 13 in the receiving space 113 includes a curved surface and a flat surface
  • the inner surface of the side wall 112 is a flat surface
  • the flat portion of the protruding portion 13 is in contact with the inner surface of the side wall 112.
  • the first housing 11 and the second housing 12 are welded and fixed.
  • the shape of the second housing 12 can be adaptively adjusted according to the shape of the bottom wall 111 or other actual needs, and can be a regular shape such as a rectangle, a triangle, a circle, or other irregular shapes.
  • the material of the second housing 12 may be metal, plastic, or a composite material of metal and plastic.
  • the metal can be selected from one or more of other metal materials such as steel alloys, aluminum alloys, iron alloys, and copper alloys.
  • the second housing 12 includes an inner surface 121 and an outer surface 122 facing away from the inner surface 121.
  • the inner surface 121 faces the first housing 11.
  • the protrusion 13 is formed on the inner surface 121, and the outer surface 122 forms a groove 123 corresponding to the position of the protrusion 13.
  • the cross section of the protruding portion 13 is fan-shaped, elliptical, triangular, square, pentagonal, circular or other polygonal.
  • the height H of the protrusion 13 does not exceed 50 mm.
  • the distance L from the end of the protruding portion 13 facing the first housing 11 to the side wall 112 is 0-100 mm.
  • the depth D of the groove 123 is not greater than 100 mm.
  • the protruding portion 13 can be formed by punching the outer surface 122 of the second housing 12.
  • the protruding portion 13 protrudes from the inner surface 121 of the second housing 12.
  • the protruding portion 13 may be formed on the inner surface 121 of the second housing 12 through processes such as bonding or welding.
  • the protruding portion 13 and the second housing 12 can also be formed by integral molding.
  • the second housing 12 is provided with a plurality of protrusions 13, and the plurality of protrusions 13 are arranged intermittently and equidistantly. It can also be arranged in discontinuous non-equidistant arrangements as shown in Figure 5.
  • the second housing 12 includes a plurality of protrusions 13.
  • the plurality of protrusions 13 are continuously arranged.
  • the second housing 12 may also include a protruding portion 13, and the protruding portion 13 is ring-shaped or circular.
  • the second housing 12 includes eight protrusions 13.
  • the eight protrusions 13 are arranged on the inner surface 121 of the second housing 12 and are arranged intermittently and equidistantly. In this way, the protrusion 13 is defined to achieve precise positioning between the first housing 11 and the second housing 12. Wherein, the first direction and the second direction are perpendicular to each other.
  • the eight protrusions 13 are arranged intermittently and non-equally.
  • the number of the protrusions 13 is not limited, and can be one, two, three, four, five, six, seven, nine, ten, etc.
  • the casing 10 may also be provided with a liquid injection hole (not shown), and the liquid injection hole may be located in the first casing 11 or the second casing. 12.
  • the electrolyte can be injected through the injection hole.
  • a liquid injection plug 14 is provided in the liquid injection hole, and the liquid injection plug 14 is used to seal the liquid injection hole to avoid leakage of the injected electrolyte or prevent external impurities from entering the inside of the housing 10.
  • the embodiment of the present application also provides a battery 100.
  • the battery 100 includes the casing 10 and the battery core 20.
  • the battery core 20 is accommodated in the housing 10.
  • the battery 100 may be a button battery, and the shell material of the battery 100 may be steel.
  • the cell 20 may be a laminated cell or a wound cell.
  • the battery 100 further includes a pole 30.
  • the pole 30 is disposed on the second housing 12.
  • the battery core 20 may include a negative electrode sheet 201, a positive electrode sheet 202, and an isolation film 203 disposed between the negative electrode sheet 201 and the positive electrode sheet 202.
  • the negative electrode sheet 201, the positive electrode sheet 202, and the isolation film 203 are laminated to form the battery core 20.
  • the negative electrode sheet 201 includes a negative electrode current collector and a negative electrode active material layer formed on the surface of the negative electrode current collector.
  • the positive electrode sheet 202 includes a positive electrode current collector and a positive electrode active material layer formed on the surface of the positive electrode current collector.
  • the negative electrode current collector and the positive electrode current collector may be connected to the negative electrode tab 204 and the positive electrode tab 205 by welding.
  • the negative electrode tab 204 can be connected to the first housing 11 or the second housing 12 by welding, and the positive electrode tab 205 can be connected to the electrode post 30 by welding, so that the electrode The column 30 and the second housing 12 exhibit opposite electrical polarity.
  • the battery 100 further includes a first protective member 40 housed in the casing 10.
  • the first protection member 40 is located between the battery core 20 and the housing 10.
  • the number of the first protection member 40 is two.
  • One of the first protective members 40 is disposed above the battery core 20 and between the battery core 20 and the inner surface 121 of the second housing 12, and is used to connect the battery core 20 and the second housing 12 to the inner surface 121.
  • the two shells 12 are isolated and prevent the pole 30 from piercing the pole piece of the battery core 20.
  • Another first protective member 40 is disposed under the battery core 20 and located between the battery core 20 and the bottom wall 111 of the first housing 11, and is used to connect the battery core 20 and the first housing 11 to the bottom wall 111.
  • the bottom wall 111 of a housing 11 is isolated.
  • the battery 100 further includes a second protective member 50 housed in the casing 10.
  • the second protective member 50 surrounds the outer circumference of the battery core 20.
  • the second protection member 50 is used to isolate the battery core 20 from the second housing 12.
  • the second protection member 50 may be substantially ring-shaped so as to surround the outer circumference of the battery core 20.
  • the housing 10 includes a first housing 11 and a second housing 12.
  • the first housing 11 includes a bottom wall 111 and a side wall 112.
  • the side wall 112 is disposed on the periphery of the bottom wall 111 to form a receiving space 113 together with the bottom wall 111.
  • the bottom wall 111 is circular.
  • the second housing 12 is provided with a protruding portion 13.
  • the second housing 12 is disposed on a side of the side wall 112 away from the bottom wall 111, and the protruding portion 13 is accommodated in the receiving space 113 and contacts the inner side of the side wall 112 surface.
  • the first housing 11 has a circular shape.
  • the second housing 12 includes an inner surface 121 and an outer surface 122 opposite to the inner surface 121.
  • the inner surface 121 faces the first housing 11.
  • the protrusion 13 is formed on the inner surface 121, and the outer surface 122 forms a groove 123 corresponding to the position of the protrusion 13.
  • the protruding portion 13 can be formed by punching the outer surface 122 of the second housing 12.
  • the cross section of the protruding portion 13 is fan-shaped. The diameter of the sector is not greater than 1000 mm.
  • the protruding portion 13 protrudes from the inner surface 121 of the second housing 12.
  • the protruding portion 13 may be formed on the inner surface 121 of the second housing 12 through processes such as bonding or welding.
  • the protruding portion 13 and the second housing 12 can also be formed by integral molding.
  • the difference between the second embodiment and the first embodiment is that the cross section of the protruding portion 13 is triangular.
  • the protruding portion 13 can be formed by punching the outer surface 122 of the second housing 12.
  • the protruding portion 13 protrudes from the inner surface 121 of the second housing 12.
  • the protruding portion 13 may be formed on the inner surface 121 of the second housing 12 through processes such as bonding or welding.
  • the protruding portion 13 and the second housing 12 can also be formed by integral molding.
  • the difference between the third embodiment and the first embodiment is that the cross section of the protruding portion 13 is square.
  • the protruding portion 13 can be formed by punching the outer surface 122 of the second housing 12.
  • the protruding portion 13 protrudes from the inner surface 121 of the second housing 12.
  • the protruding portion 13 may be formed on the inner surface 121 of the second housing 12 through processes such as bonding or welding.
  • the protruding portion 13 and the second housing 12 can also be formed by integral molding.
  • the difference between the embodiment 4 and the embodiment 1 is that the cross section of the protruding portion 13 is a pentagon.
  • the protruding portion 13 can be formed by punching the outer surface 122 of the second housing 12.
  • the protruding portion 13 protrudes from the inner surface 121 of the second housing 12.
  • the protruding portion 13 may be formed on the inner surface 121 of the second housing 12 through processes such as bonding or welding.
  • the protruding portion 13 and the second housing 12 can also be formed by integral molding.
  • the difference between the embodiment 5 and the embodiment 1 is that the cross section of the protruding portion 13 is substantially semicircular.
  • the protruding portion 13 can be formed by punching the outer surface 122 of the second housing 12.
  • the protruding portion 13 protrudes from the inner surface 121 of the second housing 12.
  • the protruding portion 13 may be formed on the inner surface 121 of the second housing 12 through processes such as bonding or welding.
  • the protruding portion 13 and the second housing 12 can also be formed by integral molding.
  • the protruding portion 13 on the second housing 12 is received in the receiving space 113 and contacts the inner surface of the side wall 112 to define the second housing 12 to make the The precise positioning between the first shell 11 and the second shell 12 is realized, and the phenomenon of welding deviation and liquid leakage of the first shell 11 and the second shell 12 during welding is avoided.
  • the use of the protruding portion 13 for positioning also avoids the defect that the traditional positioning structure occupies the internal space of the housing 10, thereby improving the energy density of the battery 100.
  • the manufacturing cost of the battery 100 is greatly reduced.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Sealing Battery Cases Or Jackets (AREA)
  • Battery Mounting, Suspending (AREA)

Abstract

一种壳体，包括第一壳体及第二壳体。所述第二壳体上设有凸出部，所述第一壳体包括底壁及侧壁。所述侧壁设置于所述底壁的周缘，以与所述底壁一起形成收容空间。所述第二壳体设置于所述侧壁的远离所述底壁的一侧，且所述凸出部容置于所述收容空间内并接触所述侧壁的内表面。本申请还提供了一种具有该壳体的电池。

Description

壳体及具有该壳体的电池 技术领域
本申请涉及电池领域，尤其涉及壳体及具有该壳体的电池。
背景技术
现有电池通常包括壳体、盖体以及电芯等。其中，盖体和壳体之间普遍采用法兰结构实现定位，再采用焊接方式将盖体和壳体连接在一起。但是借助法兰结构实现定位存在以下问题：1、法兰结构会占用电池的内部空间，导致电池能量密度的损失；2、法兰结构的定位精度低，在焊接时容易焊偏导致电池出现漏液等问题；3、法兰结构的使用会导致电池的原材料成本提高。
发明内容
有鉴于此，有必要提供一种壳体，以解决上述问题。
一种壳体，包括第一壳体及第二壳体，所述第二壳体上设有凸出部，所述第一壳体包括：
底壁；及
侧壁，设置于所述底壁的周缘，以与所述底壁一起形成收容空间；所述第二壳体设置于所述侧壁的远离所述底壁的一侧，且所述凸出部容置于所述收容空间内并接触所述侧壁的内表面。
可选地，所述第二壳体上设有多个所述凸出部，多个所述凸出部呈连续式排布。
可选地，所述第二壳体上设有多个所述凸出部，多个所述凸出部间断式等距排布或间断式非等距排布。
可选地，所述凸出部的截面呈扇形、椭圆形、三角形、方形、五边形、或圆形。
可选地，所述凸出部的高度不超过50毫米。
可选地，所述凸出部朝向所述第一壳体的端部至所述侧壁的距离为0-100毫米。
可选地，所述凸出部凸设于所述第二壳体朝向所述第一壳体的表面。
可选地，所述凸出部形成于所述第二壳体的内表面，所述第二壳体的外表面对应所述凸出部的位置形成凹槽。
一种电池，包括电芯及上述所述的壳体，所述电芯容置于所述壳体内。
可选地，所述电池还包括极柱，所述极柱设置于所述第二壳体上。
综上所述，所述第二壳体上的凸出部容置于所述收容空间内并接触所述侧壁的内表面，以限定所述第二壳体来使所述第一壳体和所述第二壳体之间实现精确定位，避免了第一壳体和第二壳体在焊接时出现焊偏而漏液的现象。另外，采用凸出部进行定位还避免了传统定位结构占用壳体内部空间的缺陷，从而提高了所述电池的能量密度。此外，还大大降低了电池的制造成本。
附图说明
图1为本申请实施例1的壳体的剖面示意图。
图2为图1所示Ⅱ处的放大图。
图3为本申请实施例1的另一实施方式的壳体的部分剖面示意图。
图4为本申请一实施方式的第二壳体的俯视图。
图5为本申请另一实施方式的第二壳体的俯视图。
图6为本申请又一实施方式的第二壳体的俯视图。
图7为本申请一实施方式的电池的剖面示意图。
图8为本申请实施例2的壳体的剖面示意图。
图9为本申请实施例2的另一实施方式的壳体的部分剖面示意。
图10为本申请实施例3的壳体的部分剖面示意图。
图11为本申请实施例3的另一实施方式的壳体的部分剖面示意。
图12为本申请实施例4的壳体的部分剖面示意图。
图13为本申请实施例4的另一实施方式的壳体的部分剖面示意。
图14为本申请实施例5的壳体的部分剖面示意图。
图15为本申请实施例5的另一实施方式的壳体的部分剖面示意。
主要元件符号说明
电池                   100
壳体                   10
第一壳体               11
底壁                   111
侧壁                   112
收容空间               113
第二壳体               12
内表面                 121
外表面                 122
凹槽                   123
凸出部                 13
注液塞                 14
电芯                   20
负极片                 201
正极片                 202
隔离膜                 203
负极极耳               204
正极极耳               205
极柱                   30
第一保护件             40
第二保护件            50
高度                  H
距离                  L
深度                  D
如下具体实施方式将结合上述附图进一步说明本申请。
具体实施方式
下面将结合本申请实施例中的附图，对本申请实施例中的技术方案进行清楚、完整地描述，显然，所描述的实施例仅仅是本申请一部分实施例，而不是全部的实施例。基于本申请中的实施例，本领域普通技术人员在没有做出创造性劳动前提下所获得的所有其他实施例，都属于本申请保护的范围。
除非另有定义，本文所使用的所有的技术和科学术语与属于本申请的技术领域的技术人员通常理解的含义相同。本文中在本申请的说明书中所使用的术语只是为了描述具体的实施例的目的，不是旨在于限制本申请。
下面结合附图，对本申请的一些实施方式作详细说明。在不冲突的情况下，下述的实施例及实施例中的特征可以相互组合。
参阅图1，本申请实施方式提供了一种壳体10。所述壳体10包括第一壳体11和第二壳体12。
所述第一壳体11包括底壁111和侧壁112。所述侧壁112设置于所述底壁111的周缘，以与所述底壁111一起形成收容空间113。其中，所述底壁111的形状可以根据实际需要进行适应性调整，可以是矩形、三角形、圆形等规则形状或其他不规则形状。
在本实施方式中，所述第一壳体11的材质可以是金属、塑料或金属与塑料的复合材料。所述金属可选自钢合金、铝合金、铁合金、铜合金等其他金属材料中的一种或多种。
如图1和图2所示，所述第二壳体12上设有凸出部13。所述第二壳体12设置于所述侧壁112的远离所述底壁111的一侧，且所述凸出部13容置于所述收容空间113内并接触所述侧壁112的内表 面，如此，通过所述凸出部13的限定以使所述第一壳体11和所述第二壳体12之间实现精确定位。具体地，凸出部13在收容空间113内的表面包括弧面部和平面部，侧壁112的内表面为平面，凸出部13的平面部和侧壁112的内表面接触。在本实施方式中，所述第一壳体11和所述第二壳体12焊接固定。
在本实施方式中，所述第二壳体12的形状可依据所述底壁111的形状或其他实际需要进行适应性调整，可以是矩形、三角形、圆形等规则形状或其他不规则形状。所述第二壳体12的材质可以是金属、塑料或金属与塑料的复合材料。所述金属可选自钢合金、铝合金、铁合金、铜合金等其他金属材料中的一种或多种。
如图1和图2所示，所述第二壳体12包括内表面121及背对所述内表面121的外表面122。所述内表面121朝向所述第一壳体11。在本实施方式中，所述凸出部13形成于所述内表面121，所述外表面122对应所述凸出部13的位置形成凹槽123。在本实施方式中，所述凸出部13的截面呈扇形、椭圆形、三角形、方形、五边形、圆形或其他多边形。所述凸出部13的高度H不超过50毫米。所述凸出部13朝向所述第一壳体11的端部至所述侧壁112的距离L为0-100毫米。所述凹槽123的深度D不大于100mm。其中，所述凸出部13可通过对所述第二壳体12的外表面122进行冲坑处理而形成。
参图3，在其他实施方式中，所述凸出部13凸设于所述第二壳体12的内表面121。其中，所述凸出部13可通过粘接、焊接等工艺形成于所述第二壳体12的内表面121。在另一其他实施方式中，所述凸出部13和所述第二壳体12亦可通过一体成型形成。
参图4，一实施方式中，所述第二壳体12上设有多个凸出部13，多个所述凸出部13呈间断式等距排布。也可如图5所示的间断式非等距排布。
参图6，在另一实施方式中，所述第二壳体12包括多个凸出部13。多个所述凸出部13呈连续式排布。当然，第二壳体12也可包 括一个凸出部13，凸出部13为环形或圆形。
参图4，在本实施方式中，所述第二壳体12包括八个凸出部13。八个所述凸出部13设置于所述第二壳体12的内表面121，且间断式等距排布。如此，通过所述凸出部13的限定以使所述第一壳体11和所述第二壳体12之间实现精确定位。其中，所述第一方向和所述第二方向相互垂直。
参图5，一实施方式中，八个所述凸出部13间断式非等距排布。在另一实施方式中，所述凸出部13的数量不限，可以是一个、两个、三个、四个、五个、六个、七个、九个、十个等。
参图1，在本实施方式中，所述壳体10上还可设有注液孔(图未示)，所述注液孔可以位于所述第一壳体11或所述第二壳体12。电解液可经所述注液孔注入。所述注液孔中设有注液塞14，所述注液塞14用于密封所述注液孔，避免注入的电解液漏出或避免外界杂质进入壳体10内部。
参图7，本申请实施方式还提供一种电池100。所述电池100包括所述壳体10及电芯20。所述电芯20容置于所述壳体10中。所述电池100可以是扣式电池，电池100的壳体材料可为钢。一实施方式中，所述电芯20可以是叠片电芯或卷绕电芯。
所述电池100还进一步包括极柱30。所述极柱30设置于所述第二壳体12上。在本实施方式中，所述电芯20可包括负极片201、正极片202和设置于所述负极片201和所述正极片202之间的隔离膜203。所述负极片201、所述正极片202和所述隔离膜203经叠片后形成所述电芯20。所述负极片201包括负极集流体和形成于所述负极集流体表面的负极活性材料层。所述正极片202包括正极集流体和形成于所述正极集流体表面的正极活性材料层。所述负极集流体和所述正极集流体上可通过焊接方式连接有负极极耳204和正极极耳205。所述负极极耳204可通过焊接方式连接至所述第一壳体11或所述第二壳体12，所述正极极耳205可通过焊接方式连接至所述极柱30，使得所述极柱30和所述第二壳体12呈现相反的电极性。
在本实施方式中，所述电池100还包括容置于所述壳体10中的第一保护件40。所述第一保护件40位于所述电芯20与所述壳体10之间。具体地，所述第一保护件40的数量为两个。其中一第一保护件40设置于所述电芯20上方，并位于所述电芯20与所述第二壳体12的内表面121之间，用于将所述电芯20与所述第二壳体12隔绝开，并防止所述极柱30刺穿所述电芯20的极片。另一第一保护件40设置于所述电芯20下方，并位于所述电芯20与所述第一壳体11的底壁111之间，用于将所述电芯20与所述第一壳体11的底壁111隔绝开。
所述电池100还包括容置于所述壳体10中的第二保护件50。所述第二保护件50包围所述电芯20的外周。所述第二保护件50用于将所述电芯20与所述第二壳体12隔绝开。其中，所述第二保护件50可大致为环状，从而包围所述电芯20的外周。
下面通过实施例对本申请进行具体说明。
实施例1
参图1，所述壳体10包括第一壳体11和第二壳体12。
所述第一壳体11包括底壁111和侧壁112。所述侧壁112设置于所述底壁111的周缘，以与所述底壁111一起形成收容空间113。在本实施方式中，所述底壁111呈圆形。
请一并参阅图2，所述第二壳体12上设有凸出部13。所述第二壳体12设置于所述侧壁112的远离所述底壁111的一侧，且所述凸出部13容置于所述收容空间113内并接触所述侧壁112的内表面。在本实施方式中，所述第一壳体11呈圆形。
所述第二壳体12包括内表面121及背对所述内表面121的外表面122。所述内表面121朝向所述第一壳体11。在本实施方式中，所述凸出部13形成于所述内表面121，所述外表面122对应所述凸出部13的位置形成凹槽123。其中，所述凸出部13可通过对所述第二壳体12的外表面122进行冲坑处理而形成。所述凸出部13的截面呈扇形。所述扇形的直径不大于1000mm。
参图3，在其他实施方式中，所述凸出部13凸设于所述第二壳体12的内表面121。其中，所述凸出部13可通过粘接、焊接等工艺形成于所述第二壳体12的内表面121。在另一其他实施方式中，所述凸出部13和所述第二壳体12亦可通过一体成型形成。
实施例2
参阅图8，实施例2与所述实施例1的区别在于，所述凸出部13的截面呈三角形。其中，所述凸出部13可通过对所述第二壳体12的外表面122进行冲坑处理而形成。
参图9，在其他实施方式中，所述凸出部13凸设于所述第二壳体12的内表面121。其中，所述凸出部13可通过粘接、焊接等工艺形成于所述第二壳体12的内表面121。在另一其他实施方式中，所述凸出部13和所述第二壳体12亦可通过一体成型形成。
实施例3
参阅图10，实施例3与所述实施例1的区别在于，所述凸出部13的截面呈方形。其中，所述凸出部13可通过对所述第二壳体12的外表面122进行冲坑处理而形成。
参图11，在其他实施方式中，所述凸出部13凸设于所述第二壳体12的内表面121。其中，所述凸出部13可通过粘接、焊接等工艺形成于所述第二壳体12的内表面121。在另一其他实施方式中，所述凸出部13和所述第二壳体12亦可通过一体成型形成。
实施例4
参阅图12，实施例4与所述实施例1的区别在于，所述凸出部13的截面呈五边形。其中，所述凸出部13可通过对所述第二壳体12的外表面122进行冲坑处理而形成。
参图13，在其他实施方式中，所述凸出部13凸设于所述第二壳体12的内表面121。其中，所述凸出部13可通过粘接、焊接等工艺形成于所述第二壳体12的内表面121。在另一其他实施方式中，所述凸出部13和所述第二壳体12亦可通过一体成型形成。
实施例5
参阅图14，实施例5与所述实施例1的区别在于，所述凸出部13的截面大致呈半圆形。其中，所述凸出部13可通过对所述第二壳体12的外表面122进行冲坑处理而形成。
参图15，在其他实施方式中，所述凸出部13凸设于所述第二壳体12的内表面121。其中，所述凸出部13可通过粘接、焊接等工艺形成于所述第二壳体12的内表面121。在另一其他实施方式中，所述凸出部13和所述第二壳体12亦可通过一体成型形成。
综上所述，所述第二壳体12上的凸出部13容置于所述收容空间113内并接触所述侧壁112的内表面，以限定所述第二壳体12来使所述第一壳体11和所述第二壳体12之间实现精确定位，避免了第一壳体11和第二壳体12在焊接时出现焊偏而漏液的现象。另外，采用凸出部13进行定位还避免了传统定位结构占用壳体10内部空间的缺陷，从而提高了所述电池100的能量密度。此外，还大大降低了电池100的制造成本。
以上实施例仅用以说明本申请的技术方案而非限制，尽管参照较佳实施例对本申请进行了详细的说明，本领域的普通技术人员应当理解，可以对本申请的技术方案进行修改或等同替换，而不脱离本申请技术方案的精神和实质。

Claims (10)

  1. 一种壳体，包括第一壳体及第二壳体，其特征在于，所述第二壳体上设有凸出部，所述第一壳体包括：
    底壁；及
    侧壁，设置于所述底壁的周缘，以与所述底壁一起形成收容空间；所述第二壳体设置于所述侧壁的远离所述底壁的一侧，且所述凸出部容置于所述收容空间内并接触所述侧壁的内表面。
  2. 如权利要求1所述的壳体，其特征在于，所述第二壳体上设有多个所述凸出部，多个所述凸出部呈连续式排布。
  3. 如权利要求1所述的壳体，其特征在于，所述第二壳体上设有多个所述凸出部，多个所述凸出部间断式等距排布或间断式非等距排布。
  4. 如权利要求1所述的壳体，其特征在于，所述凸出部的截面呈扇形、椭圆形、三角形、方形、五边形、或圆形。
  5. 如权利要求1所述的壳体，其特征在于，所述凸出部的高度不超过50毫米。
  6. 如权利要求1所述的壳体，其特征在于，所述凸出部朝向所述第一壳体的端部至所述侧壁的距离为0-100毫米。
  7. 如权利要求1中所述的壳体，其特征在于，所述凸出部凸设于所述第二壳体朝向所述第一壳体的表面。
  8. 如权利要求1中所述的壳体，其特征在于，所述凸出部形成于所述第二壳体的内表面，所述第二壳体的外表面对应所述凸出部的位置形成凹槽。
  9. 一种电池，包括电芯，其特征在于，所述电池还包括如权利要求1-8中任一项所述的壳体，所述电芯容置于所述壳体内。
  10. 如权利要求9所述的电池，其特征在于，所述电池还包括极柱，所述极柱设置于所述第二壳体上。
PCT/CN2020/115669 2019-10-10 2020-09-16 壳体及具有该壳体的电池 WO2021068720A1 (zh)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US17/708,616 US20220223955A1 (en) 2019-10-10 2022-03-30 Housing and battery having the same

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201921690404.2U CN210668432U (zh) 2019-10-10 2019-10-10 壳体及具有该壳体的电池
CN201921690404.2 2019-10-10

Related Child Applications (1)

Application Number Title Priority Date Filing Date
US17/708,616 Continuation US20220223955A1 (en) 2019-10-10 2022-03-30 Housing and battery having the same

Publications (1)

Publication Number Publication Date
WO2021068720A1 true WO2021068720A1 (zh) 2021-04-15

Family

ID=70816676

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2020/115669 WO2021068720A1 (zh) 2019-10-10 2020-09-16 壳体及具有该壳体的电池

Country Status (3)

Country Link
US (1) US20220223955A1 (zh)
CN (1) CN210668432U (zh)
WO (1) WO2021068720A1 (zh)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN210668432U (zh) * 2019-10-10 2020-06-02 宁德新能源科技有限公司 壳体及具有该壳体的电池
CN214706073U (zh) * 2021-06-24 2021-11-12 比亚迪股份有限公司 电池壳体、电池和电子器件
CN115732819B (zh) * 2021-08-27 2023-12-15 宁德时代新能源科技股份有限公司 电池单体及与其相关电池、装置、制备方法和制备装置

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN202134584U (zh) * 2011-01-27 2012-02-01 丁振荣 锂电池盖帽及锂电池
CN103996803A (zh) * 2013-02-20 2014-08-20 株式会社杰士汤浅国际 蓄电元件、蓄电装置、蓄电元件的制造方法、及盖板的制造方法
CN104641487A (zh) * 2012-08-31 2015-05-20 日立汽车系统株式会社 方形二次电池
US20160276633A1 (en) * 2015-03-16 2016-09-22 Samsung Sdi Co., Ltd. Rechargeable battery
CN207818650U (zh) * 2018-01-31 2018-09-04 宁德时代新能源科技股份有限公司 顶盖板和二次电池
CN110880563A (zh) * 2019-10-10 2020-03-13 宁德新能源科技有限公司 电池壳体组件及具有所述电池壳体组件的电池
CN210668432U (zh) * 2019-10-10 2020-06-02 宁德新能源科技有限公司 壳体及具有该壳体的电池

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN202134584U (zh) * 2011-01-27 2012-02-01 丁振荣 锂电池盖帽及锂电池
CN104641487A (zh) * 2012-08-31 2015-05-20 日立汽车系统株式会社 方形二次电池
CN103996803A (zh) * 2013-02-20 2014-08-20 株式会社杰士汤浅国际 蓄电元件、蓄电装置、蓄电元件的制造方法、及盖板的制造方法
US20160276633A1 (en) * 2015-03-16 2016-09-22 Samsung Sdi Co., Ltd. Rechargeable battery
CN207818650U (zh) * 2018-01-31 2018-09-04 宁德时代新能源科技股份有限公司 顶盖板和二次电池
CN110880563A (zh) * 2019-10-10 2020-03-13 宁德新能源科技有限公司 电池壳体组件及具有所述电池壳体组件的电池
CN210668432U (zh) * 2019-10-10 2020-06-02 宁德新能源科技有限公司 壳体及具有该壳体的电池

Also Published As

Publication number Publication date
CN210668432U (zh) 2020-06-02
US20220223955A1 (en) 2022-07-14

Similar Documents

Publication Publication Date Title
WO2021068720A1 (zh) 壳体及具有该壳体的电池
KR20210029686A (ko) 반경방향 공간 이용율을 향상시키는 버튼형 전지
WO2021051653A1 (zh) 电池
US7541110B2 (en) Secondary battery
WO2021197077A1 (zh) 电池和具有所述电池的用电装置
KR100571268B1 (ko) 집전체 및 이를 이용한 리튬 이온 이차 전지
JP7104139B2 (ja) バッテリーハウジングアセンブリおよびそれを有するバッテリー
WO2020103959A1 (zh) 一种用于电池的软包电芯
CN211654872U (zh) 扣式电池的外壳组件、扣式电池以及电子产品
US11024911B2 (en) Secondary battery
WO2021232720A1 (zh) 一种多极耳圆柱电池卷芯及锂离子电池
JP2015162458A (ja) ２次電池
WO2021203715A1 (zh) 一种电芯
CN202282423U (zh) 环形锂离子动力电池
WO2024037077A1 (zh) 电池壳体及电池
WO2023103353A1 (zh) 外壳结构及电池
KR102608005B1 (ko) 배터리 및 상기 배터리를 구비한 전기 소모 장치
WO2021195923A1 (zh) 电芯结构及电池
CN210403778U (zh) 一种提升径向空间利用率的纽扣电池
WO2023001030A1 (zh) 圆柱电池和车辆
CN212323083U (zh) 电池和具有所述电池的用电装置
JP2017220393A (ja) 二次電池
WO2021226969A1 (zh) 电池和具有所述电池的用电装置
CN219040544U (zh) 一种可充电锂电池
CN220420822U (zh) 电池

Legal Events

Date Code Title Description
NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 20874111

Country of ref document: EP

Kind code of ref document: A1