WO2024141047A1 - 一种电池、电池模组及动力装置 - Google Patents

一种电池、电池模组及动力装置 Download PDF

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Publication number
WO2024141047A1
WO2024141047A1 PCT/CN2023/143395 CN2023143395W WO2024141047A1 WO 2024141047 A1 WO2024141047 A1 WO 2024141047A1 CN 2023143395 W CN2023143395 W CN 2023143395W WO 2024141047 A1 WO2024141047 A1 WO 2024141047A1
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WO
WIPO (PCT)
Prior art keywords
explosion
proof valve
notch
proof
battery
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PCT/CN2023/143395
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English (en)
French (fr)
Inventor
王永明
李文成
刘鑫
Original Assignee
蜂巢能源科技股份有限公司
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Application filed by 蜂巢能源科技股份有限公司 filed Critical 蜂巢能源科技股份有限公司
Publication of WO2024141047A1 publication Critical patent/WO2024141047A1/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
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/30—Arrangements for facilitating escape of gases
    • H01M50/342—Non-re-sealable arrangements
    • 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 technical problem to be solved by the present application is to overcome the defect in the prior art that the battery shell is wrapped with an insulating film, a hole is set on the insulating film, and the position of the insulating film hole and the position of the explosion-proof valve cannot accurately correspond, thereby affecting the opening of the explosion-proof valve, thereby providing a battery, a battery module and a power device.
  • the explosion-proof valve is a long strip structure, and the long side of the explosion-proof valve is arranged along the long side of the shell; the notch is an open structure, and there are at least two notches, which are arranged along any two sides of the explosion-proof valve, and the total length of the notches is greater than 0.3 times the circumference of the outer contour of the explosion-proof valve.
  • the spacing between the notch and the outer contour of the explosion-proof valve is 1-10 mm.
  • the notch is provided on the insulating film above the explosion-proof valve, and the notch is an open structure; the notch includes "Y" type, "S” type, “Z” type, "C” type, and "H” type structures.
  • the shell is a rectangular parallelepiped structure
  • the explosion-proof valve is arranged on a first side surface formed by a long side and a high side of the shell.
  • a plurality of explosion-proof valves are provided, and the plurality of explosion-proof valves are provided on the same first side surface of the shell, or are provided on two first side surfaces.
  • a second aspect of the present application provides a battery module, comprising a battery according to any one of the above technical solutions.
  • a third aspect of the present application provides a power device, comprising a battery as described in any one of the above technical solutions or a battery module as described in the above technical solutions.
  • the explosion-proof valve is The explosion-proof valve is coated and a notch is set at the location where the explosion-proof valve is set, which is easy for the explosion-proof valve to explode.
  • the strength of the insulating film at the notch is less than the strength of the insulating film at the location where the notch is set. Therefore, when the battery is out of control, the insulating film at the notch can be exploded first to ensure the normal opening of the explosion-proof valve. At the same time, the insulating film covers the explosion-proof valve and can protect the explosion-proof valve.
  • this solution can effectively avoid the problem of the inability to accurately align the cutting hole and the explosion-proof valve position by first covering the outer surface of the shell with an insulating film and then setting notches on the insulating film.
  • the distance between the notch and the outer contour of the explosion-proof valve is controlled at 1-10mm. On the one hand, the explosion-proof valve will not be affected when the notch is processed. On the other hand, the notch is close enough to the explosion-proof valve, which is more conducive to the opening of the explosion-proof valve.
  • FIG1 shows a schematic structural diagram of a first battery provided in an embodiment of the present application before being coated with an insulating film
  • FIG2 is a schematic diagram showing the structure of the battery in FIG1 after being coated with an insulating film
  • FIG. 3 shows the structure of the second battery provided in the embodiment of the present application before being coated with an insulating film.
  • FIG4 is a schematic diagram showing the structure of the battery in FIG3 after being coated with an insulating film
  • FIG5 shows a schematic structural diagram of a third battery provided in an embodiment of the present application before being coated with an insulating film
  • FIG6 is a schematic diagram showing the structure of the battery in FIG5 after being coated with an insulating film
  • FIG7 shows a partial enlarged view of the first notch
  • FIG8 shows a partial enlarged view of the second notch
  • FIG. 9 shows a partial enlarged view of the third type of notch.
  • the terms “installed”, “connected”, and “connected” should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components.
  • installed should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components.
  • a battery referring to FIGS. 1 to 9 , comprises a housing 1, a cover plate 2 and an explosion-proof valve 3.
  • the cover plate 2 is arranged at both ends of the housing 1; one or more explosion-proof valves 3 are provided and are arranged at intervals on the side of the housing 1; the outer surface of the housing 1 is covered with an insulating film 4, and a notch 5 is provided on the insulating film 4 at a position corresponding to the explosion-proof valve 3 to facilitate the explosion of the explosion-proof valve 3.
  • the explosion-proof valve 3 is also covered by coating the shell 1 with an insulating film 4, and a notch 5 is provided at the position where the explosion-proof valve 3 is provided, which is easy for the explosion-proof valve 3 to explode.
  • the strength of the insulating film 4 at the notch 5 is less than the strength of the insulating film 4 at the position where the notch 5 is not provided. Therefore, when the battery is out of control, the insulating film 4 at the position where the notch 5 is provided can be exploded first to ensure the normal opening of the explosion-proof valve 3. At the same time, the insulating film 4 covers the explosion-proof valve 3 and can protect the explosion-proof valve 3.
  • the present solution Compared with the traditional method of first cutting a hole in the insulating film 4 and then covering the shell 1, the present solution first covers the outer surface of the shell 1 with an insulating film 4 and then provides a notch 5 on the insulating film 4. This effectively avoids the problem that the cut hole and the explosion-proof valve 3 cannot be accurately aligned.
  • the battery is a square shell battery
  • the shell 1 is a rectangular parallelepiped structure
  • the shell 1 has two oppositely disposed first side surfaces 11 and a second side surface.
  • the long sides of the first side surface 11 and the second side surface are connected.
  • the first side surface 11 is composed of the long side and the high side of the shell 1.
  • the explosion-proof valve 3 is provided with one, which is provided on the first side surface 11.
  • the explosion-proof valve 3 is provided in the middle of the first side surface 11.
  • the explosion-proof valve 3 is a long strip structure, and the long side of the explosion-proof valve 3 is provided along the long side of the housing 1.
  • the outer surface of the housing 1, namely the two first side surfaces 11 and the two second side surfaces, are covered with an insulating film 4.
  • the notch 5 is provided outside the outer contour of the explosion-proof valve 3 and close to the peripheral area of the explosion-proof valve 3.
  • the notch 5 is provided with two tracks, one of which is arranged along the short side of the explosion-proof valve 3, and the other is arranged along the long side of the explosion-proof valve 3.
  • the notch 5 can also be provided with three or four tracks, which is not limited here.
  • the total length of the notch 5 is at least 0.3 times the outer contour circumference of the explosion-proof valve 3, so that the explosion-proof valve 3 can be opened normally.
  • the explosion-proof valve 3 is welded to the housing 1 , and a weld mark is formed around the explosion-proof valve 3 . Then, the total length of the notch 5 is not less than 0.3 times the circumference of the weld mark of the explosion-proof valve.
  • the notch 5 is a closed structure formed by surrounding the outline of the explosion-proof valve 3.
  • the outline of the notch 5 changes with the outer contour of the explosion-proof valve 3.
  • the outline formed by the notch 5 is also an elliptical structure.
  • the notch 5 is provided on the insulating film 4 above the explosion-proof valve 3, and the notch 5 is an open structure.
  • the notch 5 is in a "Y" type, "S” type, “Z” type, "C” type, “H” type, or other structures.
  • the notch 5 is provided in such an open structure, and the insulating film 4 is easy to tear in the extending direction of the notch 5, thereby ensuring that the explosion-proof valve 3 can be opened normally.
  • the depth of the notch 5 is less than the thickness of the insulating film 4.
  • the notch 5 on the insulating film 4 can be achieved by a cutter or a laser.
  • the depth of the notch 5 is less than or equal to the thickness of the insulating film 4.
  • the depth of the notch 5 is equal to the thickness of the insulating film 4.
  • the notch 5 can be a continuous solid line or a discontinuous dotted line.
  • two explosion-proof valves 3 are provided, and the two explosion-proof valves 3 are spaced apart and arranged on the same first side surface 11 of the housing 1.
  • the outer surface of the housing 1 is covered with an insulating film 4, and notches 5 are provided at positions corresponding to the two explosion-proof valves 3.
  • the notches 5 can be any of the above-mentioned embodiments.
  • three explosion-proof valves 3 are provided, and the three explosion-proof valves 3 are arranged at intervals on the housing. 6, the outer surface of the housing 1 is covered with an insulating film 4, and a notch 5 is provided at a position corresponding to the explosion-proof valve 3.
  • the notch 5 can adopt any of the above-mentioned embodiments.
  • a pole 6 is provided on the cover plate 2.
  • the pole 6 includes a positive pole 6 and a negative pole 6, and the positive pole 6 and the negative pole 6 can be respectively provided at two ends of the housing 1, or at the same end of the housing 1.
  • a battery module comprises the battery described in Example 1.
  • the explosion-proof valve 3 is also coated, and a notch 5 for facilitating the explosion-proof valve 3 to be exploded is provided at the position where the explosion-proof valve 3 is provided.
  • the insulating film 4 at the notch 5 can be exploded first to ensure the normal opening of the explosion-proof valve 3.
  • the insulating film 4 covers the explosion-proof valve 3 and can protect the explosion-proof valve 3.
  • the distance between the notch 5 and the outer contour of the explosion-proof valve 3 is controlled at 1-5 mm, which is more conducive to the opening of the explosion-proof valve 3.

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Gas Exhaust Devices For Batteries (AREA)

Abstract

本申请提供了一种电池、电池模组及动力装置，涉及电池技术领域。电池包括壳体、盖板和防爆阀。盖板设于壳体的两端；防爆阀设有一个或多个，且间隔地设于壳体的侧面；壳体的外表面包覆有绝缘膜，绝缘膜上对应防爆阀的位置处设有易于防爆阀爆破的刻痕。本申请能够解决现有技术中的电池壳体外包绝缘膜，绝缘膜上设置切孔，存在绝缘膜切孔位置和防爆阀位置不能准确对应，从而影响防爆阀开阀的问题，本申请能够保证防爆阀的正常开阀，同时对防爆阀起到保护作用，有效避免切孔和防爆阀位置不能准确对准的问题。

Description

一种电池、电池模组及动力装置
本申请要求在2022年12月29日提交中国专利局、申请号为202223554355.4、发明名称为“一种电池、电池模组及动力装置”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、电池模组及动力装置。
背景技术
传统的电芯防爆阀设置在盖板上，外包绝缘膜时不涉及防爆阀，只需修改盖板顶贴片，保证防爆阀不被遮挡，从而在热失控时防爆阀能正常开阀。而设置在壳体上的防爆阀采用传统的包膜方式，需要对防爆阀对应部位的绝缘膜进行处理。当前的技术是先在绝缘膜上对应防爆阀尺寸位置进行裁切，再进行包膜，该方案存在绝缘膜切孔与防爆阀不能准确对应的问题，对防爆阀开阀造成影响。
发明内容
本申请要解决的技术问题在于克服现有技术中的电池壳体外包绝缘膜，绝缘膜上设置切孔，存在绝缘膜切孔位置和防爆阀位置不能准确对应，从而影响防爆阀开阀的缺陷，从而提供一种电池、电池模组及动力装置。
为了解决上述问题，本申请的第一方面提供了一种电池，包括壳体、 盖板和防爆阀。盖板设于壳体的两端；防爆阀设有一个或多个，且间隔地设于壳体的侧面；壳体的外表面包覆有绝缘膜，绝缘膜上对应防爆阀的位置处设有易于防爆阀爆破的刻痕。
可选的，刻痕设于防爆阀的外轮廓的外侧且靠近防爆阀的周边区域。
可选的，防爆阀为长条状结构，防爆阀的长边沿壳体的长边设置；刻痕为开放式的结构，刻痕设有至少两道，两道刻痕沿防爆阀的任意两个侧边设置，刻痕的总长度大于防爆阀的外轮廓周长的0.3倍。
可选的，刻痕为围绕防爆阀的轮廓设置形成的封闭的结构。
可选的，刻痕与防爆阀的外轮廓之间的间距为1-10mm。
可选的，刻痕与防爆阀的外轮廓之间的间距为3-5mm。
可选的，刻痕设于防爆阀上方的绝缘膜上，刻痕为开放式的结构；刻痕包括“Y”型、“S”型、“Z”型、“C”型、“H”型结构。
可选的，壳体为长方体结构，防爆阀设于壳体的长边和高边构成的第一侧面上。
可选的，防爆阀设有多个，多个防爆阀设于壳体的同一第一侧面上，或分设于两个第一侧面上。
本申请的第二方面提供了一种电池模组，包括以上技术方案中任一项所述的电池。
本申请的第三方面提供了一种动力装置，包括以上技术方案中任一项所述的电池或以上技术方案中所述的电池模组。
本申请具有以下优点：
1.利用本申请的技术方案，通过在壳体上包覆绝缘膜，将防爆阀一并 包覆，并在设置防爆阀的位置处设置易于防爆阀爆破的刻痕，刻痕处的绝缘膜的强度小于未设置刻痕处的绝缘膜的强度，因此，在电池出现失控点时，设置刻痕处的绝缘膜能优先爆破，保证防爆阀的正常开阀，同时，绝缘膜包覆了防爆阀，能够对防爆阀起到保护的作用。相比于传统的先在绝缘膜上切孔，再包覆壳体的方式，本方案通过先在壳体的外表面包覆绝缘膜，再在绝缘膜上设置刻痕，能够有效避免切孔和防爆阀位置不能准确对准的问题。
2.通过在防爆阀的外侧且靠近防爆阀的周边区域设置刻痕，操作简单，生产效率高，有利于提高产能。
3.刻痕和防爆阀的外轮廓之间的间距控制在1-10mm,一方面在加工刻痕时不会对防爆阀造成影响，另一方面，刻痕距离防爆阀足够近，更有利于防爆阀的开阀。
附图说明
为了更清楚地说明本申请具体实施方式或现有技术中的技术方案，下面将对具体实施方式或现有技术描述中所需要使用的附图作简单地介绍，显而易见地，下面描述中的附图是本申请的一些实施方式，对于本领域普通技术人员来讲，在不付出创造性劳动的前提下，还可以根据这些附图获得其他的附图。
图1示出了本申请实施例提供的第一种电池的未包覆绝缘膜前的结构示意图；
图2示出了图1中的电池包覆绝缘膜后的结构示意图；
图3示出了本申请实施例提供的第二种电池的未包覆绝缘膜前的结构 示意图；
图4示出了图3中的电池包覆绝缘膜后的结构示意图；
图5示出了本申请实施例提供的第三种电池的未包覆绝缘膜前的结构示意图；
图6示出了图5中的电池包覆绝缘膜后的结构示意图；
图7示出了第一种刻痕的局部放大图；
图8示出了第二种刻痕的局部放大图；
图9示出了第三种刻痕的局部放大图。
附图标记说明：
1、壳体；11、第一侧面；2、盖板；3、防爆阀；4、绝缘膜；5、刻痕；
6、极柱。
具体实施方式
下面将结合附图对本申请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。
在本申请的描述中，需要说明的是，术语“中心”、“上”、“下”、“左”、“右”、“竖直”、“水平”、“内”、“外”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”、“第三”仅用于描述目的，而不能理解为指示或暗示相对重要性。
在本申请的描述中，需要说明的是，除非另有明确的规定和限定，术语“安装”、“相连”、“连接”应做广义理解，例如，可以是固定连接，也可以是可拆卸连接，或一体地连接；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。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。
此外，下面所描述的本申请不同实施方式中所涉及的技术特征只要彼此之间未构成冲突就可以相互结合。
为了便于介绍本申请的技术方案，以下结合附图以及具体的实施例来详细说明，但实施例不应看作是对本申请的限制。
实施例1
一种电池，参照图1-图9，包括壳体1、盖板2和防爆阀3。盖板2设于壳体1的两端；防爆阀3设有一个或多个，且间隔地设于壳体1的侧面；壳体1的外表面包覆有绝缘膜4，绝缘膜4上对应防爆阀3的位置处设有易于防爆阀3爆破的刻痕5。
利用本申请的技术方案，通过在壳体1上包覆绝缘膜4，将防爆阀3一并包覆，并在设置防爆阀3的位置处设置易于防爆阀3爆破的刻痕5，刻痕5处的绝缘膜4的强度小于未设置刻痕5处的绝缘膜4的强度，因此，在电池出现失控点时，设置刻痕5处的绝缘膜4能优先爆破，保证防爆阀3的正常开阀，同时，绝缘膜4包覆了防爆阀3，能够对防爆阀3起到保护的作用。相比于传统的先在绝缘膜4上切孔，再包覆壳体1的方式，本方案通过先在壳体1的外表面包覆绝缘膜4，再在绝缘膜4上设置刻痕5，能够有 效避免切孔和防爆阀3位置不能准确对准的问题。
可选的，作为其中一种实施例，参照图1，电池为方壳电池，壳体1为长方体结构，壳体1具有两个相对设置的第一侧面11和第二侧面。第一侧面11和第二侧面的长边相接。第一侧面11由壳体1的长边和高边构成。
可选的，参照图1，防爆阀3设有一个，设于第一侧面11上。可选的，防爆阀3设于第一侧面11的中部。本实施例中，防爆阀3为长条状结构，防爆阀3的长边沿壳体1的长边设置。
参照图2，壳体1的外表面，即两个第一侧面11和两个第二侧面均包覆绝缘膜4。可选的，刻痕5设于防爆阀3的外轮廓的外侧且靠近防爆阀3的周边区域。通过在防爆阀3的外侧且靠近防爆阀3的周边区域设置刻痕5，操作简单，生产效率高，有利于提高产能。
可选的，参照图2、图4、图6-图8，刻痕5为开放式的结构，刻痕5设有至少两道，两道刻痕5沿防爆阀3的任意两个侧边设置，刻痕5的总长度大于防爆阀3的外轮廓周长的0.3倍。其中一种实施例，参照图7，刻痕5设有两道，分别沿防爆阀3的相对的两个短边设置。其中另一种实施例，参照图8，刻痕5设有两道，分别沿防爆阀3的相对的两个长边设置。当然，在一些其他的实施例中，刻痕5设置两道，其中一条沿防爆阀3的短边设置，另一条沿防爆阀3的长边设置。作为可替换的实施方式，刻痕5还可以设置三道或四道，这里不做限制。刻痕5的总长度至少是防爆阀3的外轮廓周长的0.3倍，这样能够保证防爆阀3能够正常开阀。在一些实施例中，防爆阀3与壳体1焊接，防爆阀3的周边会形成焊印，则，刻痕5的总长度不低于防爆阀的焊印周长的0.3倍。
可选的，参照图9，刻痕5为围绕防爆阀3的轮廓设置形成的封闭的结构。当防爆阀3为其他结构时，刻痕5的轮廓随防爆阀3的外轮廓形状而变。比如，当防爆阀3的外轮廓为椭圆形结构时，刻痕5构成的轮廓也为椭圆形。
可选的，刻痕5与防爆阀3的外轮廓之间的间距为1-10mm。刻痕5和防爆阀3的外轮廓之间的间距控制在1-10mm，一方面在加工刻痕5时不会对防爆阀3造成影响，另一方面，刻痕5距离防爆阀3足够近，更有利于防爆阀3的开阀。可选的，刻痕5与防爆阀3的外轮廓之间的间距为3-5mm。
可选的，刻痕5设于防爆阀3上方的绝缘膜4上，刻痕5为开放式的结构。可选的，刻痕5呈“Y”型、“S”型、“Z”型、“C”型、“H”型等结构。刻痕5设置为这种开放式的结构，在刻痕5的延伸方向上，绝缘膜4易于撕裂，从而能够保证在防爆阀3能够正常开阀。在这些实施例中，为了保证刻痕5在加工过程中不会对防爆阀3造成影响，刻痕5的深度小于绝缘膜4的厚度。
可选的，绝缘膜4上的刻痕5可通过刀具或激光实现。可选的，刻痕5的深度小于或等于绝缘膜4的厚度。本实施例中，刻痕5的深度等于绝缘膜4的厚度。刻痕5可以是连续的实线，也可以是断续的虚线。
可选的，参照图3，防爆阀3设有两个，两个防爆阀3间隔设于壳体1的同一个第一侧面11上。参照图4，壳体1的外表面包覆有绝缘膜4，在对应两个防爆阀3的位置处设置刻痕5。刻痕5可选用上述的任一种实施方式。
可选的，参照图5，防爆阀3设有三个，三个防爆阀3间隔地设于壳体 1的同一第一侧面11上。参照图6，壳体1的外表面包覆有绝缘膜4，在对应防爆阀3的位置处设置刻痕5。刻痕5可采用上述的任一种实施方式。
可选的，防爆阀3设置有多个，多个防爆阀3分设于壳体1的两个第一侧面11上。同样，两个第一侧面11上的绝缘膜4，在对应防爆阀3的位置处设置刻痕5。
可选的，在盖板2上设有极柱6。极柱6包括正极极柱6和负极极柱6，正极极柱6和负极极柱6可分别设于壳体1的两端，也可以设于壳体1的同一端。
实施例2
一种电池模组，包括实施例1中所述的电池。
实施例3
一种动力装置，包括实施例1中所述的电池或实施例2中所述的电池模组。
根据上述描述，本专利申请具有以下优点：
1、通过在壳体1上包覆绝缘膜4，将防爆阀3一并包覆，并在设置防爆阀3的位置处设置易于防爆阀3爆破的刻痕5，设置刻痕5处的绝缘膜4能优先爆破，保证防爆阀3的正常开阀，同时，绝缘膜4包覆了防爆阀3，能够对防爆阀3起到保护的作用；本方案通过先在壳体1的外表面包覆绝缘膜4，再在绝缘膜4上设置刻痕5，能够有效避免切孔和防爆阀3位置不能准确对准的问题。
2、通过在防爆阀3的外侧且靠近防爆阀3的周边区域设置刻痕5，操作简单，生产效率高，有利于提高产能；
3、刻痕5和防爆阀3的外轮廓之间的间距控制在1-5mm,更有利于防爆阀3的开阀。
显然，上述实施例仅仅是为清楚地说明所作的举例，而并非对实施方式的限定。对于所属领域的普通技术人员来说，在上述说明的基础上还可以做出其它不同形式的变化或变动。这里无需也无法对所有的实施方式予以穷举。而由此所引伸出的显而易见的变化或变动仍处于本申请的保护范围之中。

Claims (10)

  1. 一种电池，其特征在于，包括：
    壳体；
    盖板，所述盖板设于所述壳体的两端；
    防爆阀，所述防爆阀设有一个或多个，且间隔地设于所述壳体的侧面；所述壳体的外表面包覆有绝缘膜，所述绝缘膜上对应所述防爆阀的位置处设有易于所述防爆阀爆破的刻痕。
  2. 根据权利要求1所述的电池，其特征在于，所述刻痕设于所述防爆阀的外侧且靠近所述防爆阀的周边区域。
  3. 根据权利要求2所述的电池，其特征在于，所述防爆阀为长条状结构，所述防爆阀的长边沿所述壳体的长边设置；所述刻痕为开放式的结构，所述刻痕设有至少两道，两道所述刻痕沿所述防爆阀的任意两个侧边设置，所述刻痕的总长度大于所述防爆阀的外轮廓周长的0.3倍。
  4. 根据权利要求2所述的电池，其特征在于，所述刻痕为围绕所述防爆阀的轮廓设置形成的封闭的结构。
  5. 根据权利要求3或4所述的电池，其特征在于，所述刻痕与所述防爆阀的外轮廓之间的间距为1-10mm。
  6. 根据权利要求1所述的电池，其特征在于，所述刻痕设于所述防爆阀上方的所述绝缘膜上，所述刻痕为开放式的结构；所述刻痕包括“Y”型、“S”型、“Z”型、“C”型、“H”型结构。
  7. 根据权利要求1-4中任一项所述的电池，其特征在于，所述壳体为长方体结构，所述防爆阀设于所述壳体的长边和高边构成的第一侧面上。
  8. 根据权利要求7所述的电池，其特征在于，所述防爆阀设有多个，多个所述防爆阀设于所述壳体的同一所述第一侧面上，或分设于两个所述第一侧面上。
  9. 一种电池模组，其特征在于，包括权利要求1-8中任一项所述的电池。
  10. 一种动力装置，其特征在于，包括权利要求1-8中任一项所述的电池或权利要求9所述的电池模组。
PCT/CN2023/143395 2022-12-29 2023-12-29 一种电池、电池模组及动力装置 WO2024141047A1 (zh)

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