Battery module, and secondary battery and top cover component thereof

A secondary battery and component technology, applied in the direction of secondary batteries, battery pack components, batteries, etc., can solve problems such as temperature rise, thermal runaway, failure to reach the opening pressure of the explosion-proof plate, etc., to achieve pressure relief and cooling, The effect of improving safety performance

Active Publication Date: 2019-11-01
CONTEMPORARY AMPEREX TECH CO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the temperature of another adjacent secondary battery rises rapidly due to the influence of heat diffusion and its own internal short circuit.

Method used

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  • Battery module, and secondary battery and top cover component thereof
  • Battery module, and secondary battery and top cover component thereof
  • Battery module, and secondary battery and top cover component thereof

Examples

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Embodiment Construction

[0055] In order to make the purpose, technical solution and advantages of the present application clearer, the present application will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present application, and are not intended to limit the present application.

[0056] In the description of this application, unless otherwise clearly specified and limited, the terms "first" and "second" are only used for the purpose of description, and cannot be understood as indicating or implying relative importance; the term "plurality" is Refers to two or more (including two); unless otherwise specified or explained, the term "connection" should be understood in a broad sense, for example, "connection" can be a fixed connection, a detachable connection, or an integral connection, or an electrical connection. Connection, or signal connection; "c...

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PUM

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Abstract

The invention provides a battery module, and a secondary battery and a top cover component thereof. The battery module comprises a plurality of secondary batteries arranged in sequence. The secondarybattery includes an electrode component, a housing, and a top cover component. The electrode component is housed in the housing, and the top cover component is connected with the housing. The top cover component comprises a top cover plate, an anti-explosion piece and a fixing piece. The top cover plate is provided with a through hole, the anti-explosion piece is arranged at the top cover plate and seals the through hole, and the anti-explosion piece has a weak area. The fixing piece is connected with the top cover plate and the anti-explosion piece, the melting point of the fixing piece is smaller than that of the top cover plate and that of the anti-explosion piece. The anti-explosion piece is arranged in that: when the fixing piece is not molten, the weak area can be cracked when the internal air pressure of the secondary battery exceeds the air pressure required by the cracking of the weak area; and when the fixing piece is molten, the anti-explosion piece can be at least partiallyseparated from the top cover plate when the internal air pressure of the secondary battery is lower than the air pressure required by the cracking of the weak area.

Description

technical field [0001] The invention relates to the field of batteries, in particular to a battery module, a secondary battery and a top cover assembly thereof. Background technique [0002] Currently commonly used secondary batteries generally include a casing, an electrode assembly accommodated in the casing, and a top cover fixed to the casing. In order to ensure the safety of the secondary battery, an explosion-proof disk is generally installed on the top cover. When the internal pressure of the secondary battery reaches the opening pressure of the explosion-proof disk, the explosion-proof disk opens to achieve the purpose of pressure relief. [0003] In the known field, a plurality of secondary batteries are assembled in series and parallel to form a module. When one of the secondary batteries is under abuse such as nail penetration, the explosion-proof plate of the secondary battery can be opened in time to achieve the purpose of pressure relief and cooling. However,...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M2/04H01M2/12H01M10/0525H01M50/15H01M50/159H01M50/186H01M50/593
CPCH01M10/0525H01M2200/20H01M2200/10H01M50/15H01M50/383H01M50/375H01M50/342H01M50/186H01M50/159H01M50/593Y02E60/10H01M50/3425H01M50/578
Inventor 黄思应张诗尧李全坤许金梅赵丰刚王学辉
Owner CONTEMPORARY AMPEREX TECH CO
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