WO2023226518A1 - 电池和电子设备 - Google Patents

电池和电子设备 Download PDF

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Publication number
WO2023226518A1
WO2023226518A1 PCT/CN2023/080169 CN2023080169W WO2023226518A1 WO 2023226518 A1 WO2023226518 A1 WO 2023226518A1 CN 2023080169 W CN2023080169 W CN 2023080169W WO 2023226518 A1 WO2023226518 A1 WO 2023226518A1
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WO
WIPO (PCT)
Prior art keywords
positioning piece
piece
housing
battery according
battery
Prior art date
Application number
PCT/CN2023/080169
Other languages
English (en)
French (fr)
Inventor
卫志达
彭宁
谢继春
Original Assignee
珠海冠宇电池股份有限公司
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Application filed by 珠海冠宇电池股份有限公司 filed Critical 珠海冠宇电池股份有限公司
Publication of WO2023226518A1 publication Critical patent/WO2023226518A1/zh

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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
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/05—Accumulators with non-aqueous electrolyte
    • H01M10/052—Li-accumulators
    • 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
    • H01M50/50—Current conducting connections for cells or batteries
    • H01M50/528—Fixed electrical connections, i.e. not intended for disconnection
    • 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 battery technology, and specifically to a battery and electronic equipment.
  • lithium batteries are designed to use metal shells to encapsulate the cells.
  • the tabs and the metal shell are welded and fixed.
  • the design space between the shell and the battery core is relatively large, and the volume of the battery core is relatively reduced, resulting in a low battery capacity.
  • Embodiments of the present application provide a battery to solve the problem of low battery capacity in related technologies.
  • an embodiment of the present application provides a battery, including: a battery core, a casing, a first positioning piece and a second positioning piece, wherein,
  • the battery core is located inside the housing, and the battery core is provided with tabs;
  • the first positioning piece is located inside the housing, and the first positioning piece includes a first side connected to the second positioning piece and a second side connected to the tab;
  • the second positioning piece includes a body and a fixing piece.
  • the second positioning piece is located outside the shell.
  • the fixing piece passes through the shell and is fixedly connected to the first side of the first positioning piece;
  • An inclination angle is formed between the first side surface and the second side surface.
  • a first sealing gasket is further included.
  • the first sealing gasket includes a sealing portion attached between the first side of the first positioning piece and the housing.
  • the first sealing gasket further includes a support portion connected to the sealing portion, and the support portion is attached between the second side and the housing.
  • the angle between the sealing part and the supporting part is the same as the angle between the first side and the second side of the first positioning piece.
  • the hardness of the supporting part is greater than the hardness of the sealing part.
  • the housing includes a bottom wall and a side wall extending from the bottom wall;
  • the first positioning piece includes a first connecting piece and a second connecting piece that are connected to each other.
  • the first connecting piece is located between the battery core and the side wall.
  • the first side is where the first connecting piece faces away from the first connecting piece.
  • the second connecting piece is attached to the bottom wall, and the second side is a side surface of the second connecting piece facing away from the bottom wall.
  • a second sealing gasket is also included.
  • the second sealing gasket is attached between the second positioning piece and the housing.
  • the second sealing gasket is provided with a through hole.
  • the fixing piece passes through the through hole and the housing and is fixedly connected to the first positioning piece.
  • the surface of the second sealing gasket is provided with a protrusion that matches the through hole, and the protrusion is attached and fixed in the through hole.
  • the fixing member includes a connecting rod and a nail cap located on one end of the connecting rod, one end of the connecting rod passes through the housing, and the other end of the connecting rod is connected to the The second positioning piece;
  • the nail cap is in contact with the first side of the first positioning piece.
  • the thickness of the first positioning piece ranges from 0.1 mm to 1 mm, and/or the thickness of the second positioning piece ranges from 0.1 mm to 1 mm.
  • it also includes an adapter piece, the first surface of the adapter piece is welded and fixed to the second side of the first positioning piece, and the second surface of the adapter piece is welded to the second side of the first positioning piece.
  • the tabs are welded and fixed, and the first surface and the second surface of the adapter piece are opposite to each other.
  • the thickness of the adapter sheet ranges from 0.1 mm to 1 mm.
  • first side and the second side of the first positioning piece are greater than or equal to 90°.
  • the battery core includes a plurality of tabs, and the plurality of tabs are connected to form a tab plate, and the tab plate is fixedly connected to the second side of the first positioning piece.
  • This application also provides an electronic device, including: the above-mentioned battery.
  • an inclination angle is formed between the first side and the second side, and the tabs and the second side are welded and fixed.
  • the welding tool is arranged in a direction perpendicular to the battery core so as not to interfere with the casing, thus reducing the welding electrode.
  • the amount of space required for the earphone increases the relative volume of the battery core.
  • Figure 1 is one of the structural schematic diagrams of a battery provided by an embodiment of the present application.
  • Figure 2 is the second structural schematic diagram of a battery provided by an embodiment of the present application.
  • Figure 1 is one of the structural schematic diagrams of a battery provided by an embodiment of the present application.
  • the battery includes: a battery core 10, a casing 20, a first positioning piece 30 and a second positioning piece 40. ,in,
  • the battery core 10 is located inside the casing 20, and the battery core 10 is provided with tabs 101;
  • the first positioning piece 30 is located inside the housing 20.
  • the first positioning piece 30 includes a first side 301 connected to the second positioning piece 40 and a second side 302 connected to the tab 101;
  • the second positioning piece 40 includes a body and a fixing part 401.
  • the second positioning piece 40 is located outside the housing 20.
  • the fixing member 401 passes through the housing 20 and is fixedly connected to the first side 301 of the first positioning piece 30;
  • An inclination angle is formed between the first side surface 301 and the second side surface 302 .
  • the side surface of the housing 20 may interfere with the welding device. If the tab 101 is welded to the side surface of the housing 20 , the space occupied inside the housing 20 needs to be designed to be larger. In this embodiment, the second side 302 of the first positioning piece 30 is welded to the pole lug 101. There is no possibility of interference with the welding device in the vertical direction of the second side 302. The inner side of the housing 20 can be used for connecting with the pole.
  • the space occupied by the welding of the lug 101 is designed to be smaller, thereby increasing the volume of the battery core 10 and thereby increasing the capacity of the battery.
  • the first side 301 of the first positioning piece 30 and the second positioning piece 40 are usually screwed or riveted.
  • the fixing method used in this embodiment is riveting.
  • the second positioning piece 40 is fixed by riveting. After the member 401 and the second connecting piece are fixed, they serve as electrodes to conduct electricity.
  • the pole tab 101 can be a positive pole tab 101 or a negative pole tab 101, either of which can be welded and fixed by the method provided in this embodiment.
  • the thickness range of the first positioning piece 30 is set to 0.1 mm to 1 mm.
  • the thickness range of the second positioning piece 40 is set to 0.1 mm to 1 mm, which can ensure the strength and reduce the space occupied.
  • a first sealing gasket is also included.
  • the first sealing gasket includes a sealing portion 50 , and the sealing portion 50 is attached to the first side 301 of the first positioning piece 30 and the housing 20 between.
  • the fixing part 401 needs to pass through the casing 20, and the casing 20 is provided with a through hole that matches the fixing part 401.
  • the inside of the battery needs to be isolated and sealed from the outside, so the through hole provided on the casing 20 needs to be Make a seal.
  • the sealing portion 50 is attached between the housing 20 and the first side 301 of the first positioning piece 30, which can effectively seal and fix the through hole.
  • the casing 20 of the battery may be made of conductive metal material, so the sealing part 50 needs to be designed as an insulating material to prevent the casing 20 from connecting the positive and negative electrodes of the battery and causing a short circuit.
  • the shape of the sealing portion 50 is adapted to the shape of the first side surface 301 of the first positioning piece 30
  • the size of the sealing portion 50 is adapted to the size of the first side surface 301 of the first positioning piece 30 .
  • the first sealing gasket also includes a support part connected to the sealing part 50 51, the support part 51 is attached between the second side 302 and the housing 20.
  • the supporting portion 51 is provided between the second side 302 of the first positioning piece 30 and the housing 20 , so that the second side 302 of the first positioning piece 30 contacts the housing 20 through the supporting portion 51 to prevent the second side 302 of the first positioning piece 30 from contacting the housing 20 .
  • the support part 51 is also made of insulating material to avoid short circuit of the battery.
  • the shape of the supporting part 51 is adapted to the shape of the second side 302 of the first positioning piece 30
  • the size of the supporting part 51 is adapted to the size of the second side 302 of the first positioning piece 30 .
  • the angle between the sealing part 50 and the supporting part 51 is the same as the angle between the first side 301 and the second side 302 of the first positioning piece 30 .
  • the first sealing gasket needs to be in close contact with the first positioning piece 30, and the first side 301 and the second side 302 of the first positioning piece 30 have an angle, so the sealing part 50 and the supporting part 51 need to be The angle between them is set to be the same as the angle between the first side 301 and the second side 302 of the first positioning piece 30 , thereby reducing the gap between the first sealing gasket and the first positioning piece 30 .
  • the hardness of the supporting part 51 is greater than the hardness of the sealing part 50 .
  • the sealing part 50 only needs to seal the through hole and is subject to less pressure, while the support part 51 needs to support the second side 302 of the first positioning piece 30 and is subject to greater pressure.
  • the hardness of the supporting part 51 is set to be greater than the hardness of the sealing part 50 to meet different functional requirements.
  • the housing 20 includes a bottom wall and side walls extending from the bottom wall;
  • the first positioning piece 30 includes a first connecting piece and a second connecting piece that are connected to each other.
  • the first connecting piece is located between the battery core 10 and the side wall, and the first side is the side surface of the first connecting piece facing away from the side wall;
  • the second connecting piece is attached to the bottom wall, and the second side is a side surface of the second connecting piece facing away from the bottom wall.
  • the first sealing gasket is adapted to the shape of the first positioning piece 30.
  • the first positioning piece 30 includes a first connecting piece and a second connecting piece, which can change the connection direction of the tab 101. This is no longer required. Repeat.
  • a second sealing gasket 52 is also included.
  • the second sealing gasket 52 is attached between the second positioning piece 40 and the housing 20 .
  • the second sealing gasket 52 is provided with a through hole through which the fixing member 401 passes. The through hole and the housing 20 are fixedly connected to the first positioning piece 30 .
  • the through hole can be sealed not only from the inside of the housing 20 but also from the outside of the housing 20 .
  • This embodiment provides a second sealing gasket 52 attached between the second positioning piece 40 and the housing 20 to seal the through hole.
  • the surface of the second sealing gasket 52 can be provided with protrusions that match the through holes, and the protrusions can be attached and fixed in the through holes to achieve a better sealing effect.
  • the shape of the second sealing gasket 52 is adapted to the shape of the second positioning piece 40
  • the size of the second sealing gasket 52 is adapted to the size of the second positioning piece 40 .
  • the second positioning piece 40 since the second positioning piece 40 needs to be used as an electrode and needs to have a flat structure, the second positioning piece 40 is made into a quadrangular shape. At the same time, a fixing piece 401 is provided on the surface of the second positioning piece 40. The fixing piece 401 is used to realize the second positioning piece 40. The two positioning pieces 40 are fixed on the housing 20 .
  • the fixing member 401 includes a connecting rod and a nail cap located on one end of the connecting rod, one end of the connecting rod passes through the housing 20, and the other end of the connecting rod is connected to the second positioning piece 40;
  • the nail cap is in contact with the first side 301 of the first positioning piece 30 .
  • the first positioning piece 30 , the second positioning piece 40 and the housing 20 are fixed through connecting rods and nail caps.
  • the diameter of the connecting rod is adapted to the size of the through hole, and the contact between the nail cap and the first side 301 realizes the fixation of the first positioning piece 30 , the second positioning piece 40 and the housing 20 .
  • an adapter piece 60 is also included.
  • the first surface of the adapter piece 60 is welded and fixed to the second side 302 of the first positioning piece 30 .
  • the second surface of the adapter piece 60 is welded to the tab 101 Welding fixation, the first surface and the second surface of the adapter piece 60 are opposite to each other.
  • the adapter piece 60 can optimize the welding process between the tab 101 and the second side 302 of the first positioning piece 30 .
  • the process of welding and fixing the adapter piece 60 and the tab 101 may not be performed inside the housing 20 but directly outside the housing 20, which can reduce possible damage to the tab 101 during the welding process.
  • the adapter piece 60 is fixed to the second side 302 of the first positioning piece 30.
  • the adapter piece 60 and the second side 302 of the first positioning piece 30 can fit tightly. , to achieve better welding results.
  • the shape of the adapter piece 60 is adapted to the shape of the second side 302 of the first positioning piece 30
  • the size of the adapter piece 60 is adapted to the size of the second side 302 of the first positioning piece 30 .
  • the adapter piece 60 needs to maintain a certain strength while not occupying a large space.
  • This embodiment provides that the thickness range of the adapter piece 60 is 0.1 mm to 1 mm. Within this range, both adapter pieces can be considered. 60% strength and reduced space footprint.
  • the angle between the first side 301 and the second side 302 of the first positioning piece 30 is greater than or equal to 90°.
  • first side 301 and the second side 302 of the first positioning piece 30 are welded to form a bent structure, in order to reduce the damage caused by the side of the housing 20 or the first side 301 when the tab 101 and the second side 302 are welded. To interfere, it is necessary to set the angle between the first side 301 and the second side 302 of the first positioning piece 30 to be greater than or equal to 90°.
  • the battery core 10 includes a plurality of tabs 101 , the plurality of tabs 101 are connected to form a tab plate, and the tab plate is fixedly connected to the second side 302 of the first positioning piece 30 .
  • the tab plate is fixedly connected to the second side 302 of the first positioning piece 30, so that the tab 101 and the first positioning piece 30 can be fixed at one time, thereby improving product production and processing efficiency.
  • An embodiment of the present application also provides an electronic device, including the above-mentioned battery.

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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)
  • Connection Of Batteries Or Terminals (AREA)

Abstract

本申请提供一种电池和电子设备，电池包括：电芯、外壳、第一定位片和第二定位片，其中，电芯位于外壳的内侧，电芯设有极耳；第一定位片位于外壳的内侧，第一定位片包括与第二定位片连接的第一侧面以及与极耳连接的第二侧面；第二定位片包括本体和固定件，第二定位片位于外壳的外侧，固定件穿过外壳与第一定位片的第一侧面固定连接；第一侧面与第二侧面之间形成有倾斜角度。在本申请中，第一侧面与第二侧面之间形成有倾斜角度，将极耳与第二侧面焊接固定，焊接工具设置在垂直于电芯的方向，不与外壳发生干涉，降低了焊接极耳时需要占用的空间大小，提高了电芯的相对体积。

Description

电池和电子设备
本申请要求于2022年05月25日提交中国专利局、申请号为202221279032.6、申请名称为“一种电池”的中国专利申请的优先权，其全部内容通过引用结合在本申请中。
技术领域
本申请涉及电池技术领域，具体涉及一种电池和电子设备。
背景技术
锂电池的高能量密度和高循环性能使其被广泛应用于移动设备或新能源领域。为了提高锂电池的使用安全性能，锂电池被设计为采用金属外壳封装电芯的结构。相关技术中，极耳与金属外壳焊接固定，为了保证焊接效果，外壳和电芯之间的设计空间较大，电芯的体积相对降低，导致电池的容量较低。
可见，相关技术中存在着电池的容量较低的问题。
发明内容
本申请实施例提供一种电池，以解决相关技术中存在着电池的容量较低的问题。
为达到上述目的，本申请实施例一种电池，包括：电芯、外壳、第一定位片和第二定位片，其中，
所述电芯位于所述外壳的内侧，所述电芯设有极耳；
所述第一定位片位于所述外壳的内侧，所述第一定位片包括与所述第二定位片连接的第一侧面以及与所述极耳连接的第二侧面；
所述第二定位片包括本体和固定件，所述第二定位片位于所述外壳的外侧，所述固定件穿过所述外壳与所述第一定位片的第一侧面固定连接；
所述第一侧面与所述第二侧面之间形成有倾斜角度。
作为一种可选的实施方式，还包括第一密封垫，所述第一密封垫包括密封部，所述密封部贴附于所述第一定位片的第一侧面和所述外壳之间。
作为一种可选的实施方式，所述第一密封垫还包括与所述密封部连接的支撑部，所述支撑部贴附于所述第二侧面和所述外壳之间。
作为一种可选的实施方式，所述密封部和所述支撑部之间的夹角与所述第一定位片的第一侧面和第二侧面之间的角度相同。
作为一种可选的实施方式，所述支撑部的硬度大于所述密封部的硬度。
作为一种可选的实施方式，所述外壳包括底壁以及自所述底壁延伸形成的侧壁；
所述第一定位片包括有相互连接的第一连接片和第二连接片，所述第一连接片位于电芯与侧壁之间，所述第一侧面为所述第一连接片背离所述侧壁的一侧表面；
所述第二连接片与所述底壁贴合，所述第二侧面为所述第二连接片背离所述底壁的一侧表面。
作为一种可选的实施方式，还包括第二密封垫，所述第二密封垫贴附于所述第二定位片和所述外壳之间，所述第二密封垫设有通孔，所述固定件穿过所述通孔和所述外壳与所述第一定位片固定连接。
作为一种可选的实施方式，所述第二密封垫的表面设有与所述通孔适配的凸起，所述凸起贴附固定在所述通孔内。
作为一种可选的实施方式，所述固定件包括连杆和位于所述连杆的一端上的钉帽，所述连杆的一端穿过所述外壳，所述连杆的另一端连接所述第二定位片；
所述钉帽与所述第一定位片的第一侧面抵接。
作为一种可选的实施方式，所述第一定位片的厚度范围为0.1mm～1mm，和/或，所述第二定位片的厚度范围为0.1mm～1mm。
作为一种可选的实施方式，还包括转接片，所述转接片的第一表面与所述第一定位片的第二侧面焊接固定，所述转接片的第二表面与所述极耳焊接固定，所述转接片的第一表面和所述第二表面相背。
作为一种可选的实施方式，所述转接片的厚度范围为0.1mm～1mm。
作为一种可选的实施方式，所述第一定位片的第一侧面与第二侧面之 间的角度为大于或等于90°。
作为一种可选的实施方式，所述电芯包括多个极耳，所述多个极耳连接形成极耳板，所述极耳板与所述第一定位片的第二侧面固定连接。
本申请还提供一种电子设备，包括：上述的电池。
上述技术方案中的一个技术方案具有如下优点或有益效果：
在本申请中，第一侧面与第二侧面之间形成有倾斜角度，将极耳与第二侧面焊接固定，焊接工具设置在垂直于电芯的方向，不与外壳发生干涉，降低了焊接极耳时需要占用的空间大小，提高了电芯的相对体积。
附图说明
为了更清楚地说明本申请实施例的技术方案，下面将对本申请实施例描述中所需要使用的附图作简单地介绍，显而易见地，下面描述中的附图仅仅是本申请的一些实施例，对于本领域普通技术人员来讲，在不付出创造性劳动性的前提下，还可以根据这些附图获得其他的附图。
图1是本申请实施例提供的一种电池的结构示意图之一；
图2是本申请实施例提供的一种电池的结构示意图之二。
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作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。
请参见图1，图1是本申请实施例提供的一种电池的结构示意图之一，如图1所示，电池包括：电芯10、外壳20、第一定位片30和第二定位片40，其中，
电芯10位于外壳20的内侧，电芯10设有极耳101；
第一定位片30位于外壳20的内侧，第一定位片30包括与第二定位片40连接的第一侧面301以及与极耳101连接的第二侧面302；
第二定位片40包括本体和固定件401，第二定位片40位于外壳20的外 侧，固定件401穿过外壳20与第一定位片30的第一侧面301固定连接；
第一侧面301与第二侧面302之间形成有倾斜角度。
在本实施例中，外壳20的侧面存在与焊接器件干涉的可能性，若将极耳101焊接在外壳20的侧面，需要将外壳20内侧的占用空间设计较大。本实施例中，第一定位片30的第二侧面302与极耳101焊接，在第二侧面302的垂直方向上不存在与焊接器件干涉的可能性，可以将外壳20的内侧用于与极耳101焊接的占用空间部分设计更小，提高电芯10的体积，从而提高电池的容量。
其中，第一定位片30的第一侧面301和第二定位片40通常采用螺纹固定或铆接固定，如图1所示，本实施例采用的固定方式为铆接固定，第二定位片40、固定件401和第二连接片固定后作为电极导电。
其中，极耳101可以是正极耳101，也可以是负极耳101，均可以通过本实施例提供的方式进行焊接固定。
其中，第一定位片30和第二定位片40需要考虑强度和占用体积，同时需要降低工艺加工的步骤，故在本实施例中，将第一定位片30的厚度范围设为0.1mm～1mm，第二定位片40的厚度范围设为0.1mm～1mm，能保障强度和降低占用空间的大小。
作为一种可选的实施方式，如图2所示，还包括第一密封垫，第一密封垫包括密封部50，密封部50贴附于第一定位片30的第一侧面301和外壳20之间。
在本实施例中，固定件401需要穿过外壳20，外壳20上设有与固定件401适配的通孔，而电池内部需要和外部隔绝密封，故需要对外壳20上设有的通孔进行密封。本实施例在外壳20和第一定位片30的第一侧面301之间贴附密封部50，能有效地对通孔进行密封固定
其中，电池的外壳20可能采用具有导电性能的金属材料，故需要将密封部50设计为绝缘材料，避免外壳20连通电池的正负极造成短路。
其中，密封部50的形状与第一定位片30的第一侧面301的形状适配，密封部50的大小与第一定位片30的第一侧面301的大小适配。
作为一种可选的实施方式，第一密封垫还包括与密封部50连接的支撑部 51，支撑部51贴附于第二侧面302和外壳20之间。
在本实施例中，支撑部51设在第一定位片30的第二侧面302和外壳20之间，使第一定位片30的第二侧面302通过支撑部51与外壳20抵接，防止第一定位片30出现转动的可能性。
其中，同样考虑到电池可能采用具有导电性能的金属材料，支撑部51也采用绝缘材料避免电池短路。
其中，支撑部51的形状与第一定位片30的第二侧面302的形状适配，支撑部51的大小与第一定位片30的第二侧面302的大小适配。
作为一种可选的实施方式，密封部50和支撑部51之间的夹角与第一定位片30的第一侧面301和第二侧面302之间的角度相同。
在本实施例中，第一密封垫需要与第一定位片30紧密贴合，而第一定位片30的第一侧面301和第二侧面302存在角度，故需要将密封部50和支撑部51之间的夹角设为与第一定位片30的第一侧面301和第二侧面302之间的角度相同，减少第一密封垫和第一定位片30之间的缝隙。
作为一种可选的实施方式，支撑部51的硬度大于密封部50的硬度。
在本实施例中，密封部50仅需要密封通孔，受到的压力较小，而支撑部51需要支撑第一定位片30的第二侧面302，受到的压力较大，在选取材料时需要将支撑部51的硬度设为大于密封部50的硬度，以满足不同的功能需求。
作为一种可选的实施方式，外壳20包括底壁以及自底壁延伸形成的侧壁；
第一定位片30包括有相互连接的第一连接片和第二连接片，第一连接片位于电芯10与侧壁之间，第一侧面为第一连接片背离侧壁的一侧表面；
第二连接片与底壁贴合，第二侧面为第二连接片背离所述底壁的一侧表面。
在本实施例中，第一密封垫与第一定位片30的形状适配，第一定位片30包括第一连接片和第二连接片，能改变极耳101的连接方向，在此不再赘述。
作为一种可选的实施方式，还包括第二密封垫52，第二密封垫52贴附于第二定位片40和外壳20之间，第二密封垫52设有通孔，固定件401穿过通孔和外壳20与第一定位片30固定连接。
在本实施例中，不仅可以从外壳20的内侧对通孔进行密封，也可以从外壳20的外侧对通孔进行密封。本实施例提供贴附于第二定位片40和外壳20之间的第二密封垫52实现对通孔的密封。
其中，为实现较好的密封效果，可以在第二密封垫52的表面设有与通孔适配的凸起，将凸起贴附固定在通孔内达到较好的密封效果。
其中，第二密封垫52的形状与第二定位片40的形状适配，第二密封垫52的大小与第二定位片40的大小适配。
其中，由于第二定位片40需要作为电极，需求为平整的结构，故将第二定位片40设为四边形，同时第二定位片40的表面设有固定件401，通过固定件401实现将第二定位片40固定在外壳20上。
作为一种可选的实施方式，固定件401包括连杆和位于连杆的一端上的钉帽，连杆的一端穿过外壳20，连杆的另一端连接第二定位片40；
钉帽与第一定位片30的第一侧面301抵接。
在本实施例中，通过连杆和钉帽实现第一定位片30、第二定位片40和外壳20之间的固定。其中，连杆的直径与通孔的尺寸适配，钉帽与第一侧面301的抵接实现第一定位片30、第二定位片40和外壳20的固定。
作为一种可选的实施方式，还包括转接片60，转接片60的第一表面与第一定位片30的第二侧面302焊接固定，转接片60的第二表面与极耳101焊接固定，转接片60的第一表面和第二表面相背。
在本实施例中，通过转接片60可以优化极耳101与第一定位片30的第二侧面302的焊接工艺。将转接片60和极耳101焊接固定的过程可以不在外壳20的内部进行，而是直接在外部进行，这样能减少极耳101在焊接过程中可能造成的损坏。在转接片60与极耳101焊接后，再将转接片60与第一定位片30的第二侧面302固定，转接片60和第一定位片30的第二侧面302能紧密贴合，达到更好的焊接效果。
其中，转接片60的形状与第一定位片30的第二侧面302的形状适配，转接片60的大小与第一定位片30的第二侧面302的大小适配。
其中，转接片60需要保持一定的强度，同时不能占用较大的空间。本实施例提供转接片60的厚度范围为0.1mm～1mm，在该范围内能同时兼顾转接片 60的强度和降低空间体积占用体积。
作为一种可选的实施方式，第一定位片30的第一侧面301与第二侧面302之间的角度为大于或等于90°。
在本实施例中，第一定位片30的第一侧面301与第二侧面302焊接形成弯折结构，为使极耳101与第二侧面302焊接时减少外壳20侧面或第一侧面301造成的干涉，需要将第一定位片30的第一侧面301与第二侧面302之间的角度设为大于或等于90°。
作为一种可选的实施方式，电芯10包括多个极耳101，多个极耳101连接形成极耳板，极耳板与第一定位片30的第二侧面302固定连接。
在本实施例中，将极耳板与第一定位片30的第二侧面302固定连接，能够实现对极耳101和第一定位片30的一次固定完成，提高产品生产加工效率。
本申请实施例还提供一种电子设备，包括上述电池。
需要说明的是，上述电池实施例的实现方式同样适应于该电子设备的实施例中，并能达到相同的技术效果，在此不再赘述。
需要说明的是，在本文中，术语“包括”、“包含”或者其任何其他变体意在涵盖非排他性的包含，从而使得包括一系列要素的过程、方法、物品或者装置不仅包括那些要素，而且还包括没有明确列出的其他要素，或者是还包括为这种过程、方法、物品或者装置所固有的要素。在没有更多限制的情况下，由语句“包括一个……”限定的要素，并不排除在包括该要素的过程、方法、物品或者装置中还存在另外的相同要素。
上面结合附图对本申请的实施例进行了描述，但是本申请并不局限于上述的具体实施方式，上述的具体实施方式仅仅是示意性的，而不是限制性的，本领域的普通技术人员在本申请的启示下，在不脱离本申请宗旨和权利要求所保护的范围情况下，还可做出很多形式，均属于本申请的保护之内。

Claims (15)

  1. 一种电池，其特征在于，包括：电芯(10)、外壳(20)、第一定位片(30)和第二定位片(40)，其中，
    所述电芯(10)位于所述外壳(20)的内侧，所述电芯(10)设有极耳(101)；
    所述第一定位片(30)位于所述外壳(20)的内侧，所述第一定位片(30)包括与所述第二定位片(40)连接的第一侧面(301)以及与所述极耳(101)连接的第二侧面(302)；
    所述第二定位片(40)包括本体和固定件(401)，所述第二定位片(40)位于所述外壳(20)的外侧，所述固定件(401)穿过所述外壳(20)与所述第一定位片(30)的第一侧面(301)固定连接；
    所述第一侧面(301)与所述第二侧面(302)之间形成有倾斜角度。
  2. 根据权利要求1所述的电池，其特征在于，还包括第一密封垫，所述第一密封垫包括密封部(50)，所述密封部(50)贴附于所述第一定位片(30)的第一侧面(301)和所述外壳(20)之间。
  3. 根据权利要求2所述的电池，其特征在于，所述第一密封垫还包括与所述密封部(50)连接的支撑部(51)，所述支撑部(51)贴附于所述第一定位片(30)的第二侧面(302)和所述外壳(20)之间。
  4. 根据权利要求3所述的电池，其特征在于，所述密封部(50)和所述支撑部(51)之间的夹角与所述第一定位片(30)的第一侧面(301)和第二侧面(302)之间的角度相同。
  5. 根据权利要求3所述的电池，其特征在于，所述支撑部(51)的硬度大于所述密封部(50)的硬度。
  6. 根据权利要求1所述的电池，其特征在于，所述外壳(20)包括底壁以及自所述底壁延伸形成的侧壁；
    所述第一定位片(30)包括有相互连接的第一连接片和第二连接片，所述第一连接片位于电芯(10)与侧壁之间，所述第一侧面(301)为所述第一连接片背离所述侧壁的一侧表面；
    所述第二连接片与所述底壁贴合，所述第二侧面(302)为所述第二连接 片背离所述底壁的一侧表面。
  7. 根据权利要求5所述的电池，其特征在于，还包括第二密封垫(52)，所述第二密封垫(52)贴附于所述第二定位片(40)和所述外壳(20)之间，所述第二密封垫(52)设有通孔，所述固定件(401)穿过所述通孔和所述外壳(20)与所述第一定位片(30)固定连接。
  8. 根据权利要求7所述的电池，其特征在于，所述第二密封垫(52)的表面设有与所述通孔适配的凸起，所述凸起贴附固定在所述通孔内。
  9. 根据权利要求5所述的电池，其特征在于，所述固定件(401)包括连杆和位于所述连杆的一端上的钉帽，所述连杆的一端穿过所述外壳(20)，所述连杆的另一端连接所述本体；
    所述钉帽与所述第一定位片(30)的第一侧面(301)抵接。
  10. 根据权利要求1-9中任一项所述的电池，其特征在于，所述第一定位片(30)的厚度范围为0.1mm～1mm，和/或，所述第二定位片(40)的厚度范围为0.1mm～1mm。
  11. 根据权利要求1-9中任一项所述的电池，其特征在于，还包括转接片(60)，所述转接片(60)的第一表面与所述第一定位片(30)的第二侧面(302)焊接固定，所述转接片(60)的第二表面与所述极耳(101)焊接固定，所述转接片(60)的第一表面和所述第二表面相背。
  12. 根据权利要求11所述的电池，其特征在于，所述转接片(60)的厚度范围为0.1mm～1mm。
  13. 根据权利要求1-9中任一项所述的电池，其特征在于，所述第一定位片(30)的第一侧面(301)与第二侧面(302)之间的角度为大于或等于90°。
  14. 根据权利要求1-9中任一项所述的电池，其特征在于，所述电芯(10)包括多个极耳(101)，多个所述极耳(101)连接形成极耳板，所述极耳板与所述第一定位片(30)的第二侧面(302)固定连接。
  15. 一种电子设备，其特征在于，包括：根据权利要求1-14中任一项所述的电池。
PCT/CN2023/080169 2022-05-25 2023-03-07 电池和电子设备 WO2023226518A1 (zh)

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