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Battery cover plate assembly, single battery, battery module, power battery pack and electric vehicle

A battery cover and component technology, applied in small-sized batteries/battery packs, electric vehicles, battery pack components, etc., can solve problems such as potential safety hazards, explosions, battery fires, etc., to reduce high temperature and sparks, improve Safety performance, the effect of reducing the arc

Inactive Publication Date: 2019-01-04
BYD CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The high temperature and sparks generated by the arcing effect may cause dangerous accidents such as battery fire and explosion, posing safety hazards

Method used

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  • Battery cover plate assembly, single battery, battery module, power battery pack and electric vehicle
  • Battery cover plate assembly, single battery, battery module, power battery pack and electric vehicle

Examples

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Embodiment Construction

[0025] Specific embodiments of the present disclosure will be described in detail below in conjunction with the accompanying drawings. It should be understood that the specific embodiments described here are only used to illustrate and explain the present disclosure, and are not intended to limit the present disclosure.

[0026] In this disclosure, unless stated otherwise, the orientation words used such as "up, down, left, right" are usually defined based on the directions of the corresponding drawings, and "inner and outer" refer to Inside and outside of the corresponding part contour. Among them, this article involves the description of the outer end, the inner end, and the inner and outer directions, such as the inner terminal, the outer terminal, the inner end surface, and the outer end surface are relative to the inside and outside of the battery along the axial direction of the pole, and relative to the ring shape. The "inner and outer" of the member, such as the outer...

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Abstract

The disclosure relates to a battery cover assembly, single battery, battery module, power battery pack and electric vehicle. The battery cover plate assembly includes a cover plate, an electrode terminal, a current interruption structure and an arc extinguishing part, the electrode terminal is arranged on the cover plate, and includes an electrode inner terminal and an electrode outer terminal, the electrode inner terminal and the electrode outer terminal are electrically connected through the current interruption structure, the current interruption structure can disconnect the electrical connection between the electrode inner terminal and the electrode outer terminal under the action of air pressure, and the arc extinguishing part is used for at least reducing the electric arc generated when the current interruption structure disconnects the electrical connection between the electrode inner terminal and the electrode outer terminal. When the electrode inner terminal and the electrodeouter terminal are disconnected electrically, as the high voltage at the positive and negative electrodes of the battery leads to the arc discharge effect, the arc is at least weakened by the arc extinguishing part, so that the gas between the two structural parts of the battery cover plate assembly interrupted is not easy to break down by the high voltage, the occurrence of dangerous accidents such as fire and explosion of the battery and the like are avoided, and the safety performance of the battery is improved.

Description

technical field [0001] The present disclosure relates to the field of batteries, in particular, to a battery cover assembly, a single battery using the battery cover assembly, a battery module including the battery module, a power battery including the battery module, and a battery including the power battery. Batteries for electric vehicles. Background technique [0002] The electrode terminals of existing batteries generally include electrode inner terminals and electrode outer terminals, wherein the electrode inner terminals are used for electrical connection with the battery cell, and the electrode outer terminals are used for connecting with other single cells or battery modules, etc. The input and output of the current of the cell. In order to improve the safety performance of the battery and prevent serious safety problems such as battery combustion and explosion caused by overcharging, etc., the existing battery is electrically connected between the electrode inner ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M2/04H01M2/34H01M50/147H01M50/202H01M50/204H01M50/271H01M50/296H01M50/574H01M50/581
CPCH01M2220/20H01M50/147H01M50/578H01M50/202H01M50/271H01M50/574H01M50/296H01M50/204Y02P70/50H01M50/152H01M50/107H01M50/155H01M50/164H01M2200/20H01M50/559C23C2/34H01M50/3425H01M50/119H01M50/545H01M50/591H01M50/342H01M50/543H01M50/16H01M50/30H01M50/383H01M50/394H01M50/583
Inventor 王信月蒋露霞胡世超鲁鹏程晗杨珂利
Owner BYD CO LTD
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