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Power battery top cover and power battery

A power battery and top cover technology, which is applied to small-sized batteries/battery packs, battery covers/end covers, batteries, etc., can solve the problems of occupying the internal space of batteries, achieve the effect of reducing occupation and improving energy density

Active Publication Date: 2019-04-05
JIANGSU CONTEMPORARY AMPEREX TECHNOLOGY LIMITED
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the current cut-off structure and flip sheet will occupy a large space inside the battery

Method used

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  • Power battery top cover and power battery
  • Power battery top cover and power battery
  • Power battery top cover and power battery

Examples

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Embodiment Construction

[0055] The present application will be described in further detail below through specific embodiments and in conjunction with the accompanying drawings. The "front", "rear", "left", "right", "upper" and "lower" mentioned in the text are all referred to the power battery top cover and the placement state of the power battery in the drawings.

[0056] Such as Figures 1 to 3 As shown, the embodiment of the present application provides a power battery top cover, including a top cover sheet 10 , a first electrode unit 20 and a second electrode unit 30 . Wherein, the second electrode unit 30 is electrically insulated from the top cover sheet 10 . The first electrode unit 20 includes an insulating member 200 , a flipping piece 204 and a current cutoff structure 206 . In this embodiment, the top cover sheet 10 is provided with an assembly hole 100, and the current cut-off structure 206 is fixed within the radial projection range of the assembly hole 100, and can be inside, at the e...

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Abstract

The present application relates to the field of energy storage devices, in particular to a power battery top cover and a power battery. The top cover of the power battery includes a top cover sheet, a first electrode unit, and a second electrode unit. The first electrode unit includes a flip sheet, an insulator, and a current cut-off structure. The current cut-off structure is fixed within the radial projection range of the assembly hole, and The top cover sheet is electrically connected, and the flip sheet is fixed below the top cover sheet through the insulating member. The flip sheet can only be electrically connected with the top cover sheet through the current cut-off structure, and the flip sheet can be powered on When the internal pressure of the battery exceeds the reference pressure, it overturns and destroys the current cut-off structure, so that the current cut-off structure is disconnected from the top cover sheet. The power battery includes a power battery top cover. The power battery provided by this application can increase the energy density of the battery.

Description

technical field [0001] The present application relates to the field of energy storage devices, in particular to a power battery top cover and a power battery. Background technique [0002] For EV hard-shell batteries, in order to solve the overcharge problem, the industry generally adopts a solution to cut off the main circuit of the battery before the battery fails to prevent the battery from continuing to charge to ensure battery safety. [0003] At present, for a square hard-shell battery, a CID (current cut-off structure) is generally installed inside the battery for overcharge protection. At the same time, the general current cut-off structure needs to be used in conjunction with the flipper. Therefore, in the related art, both the current cutoff structure and the flipper are arranged inside the battery. However, such a current cut-off structure and flip sheet will occupy a relatively large space inside the battery. [0004] Considering that the current requirements f...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01M2/04H01M2/08H01M50/147H01M50/15H01M50/176H01M50/184H01M50/186H01M50/55H01M50/593
CPCH01M50/186H01M50/15H01M50/55H01M50/593H01M50/176H01M50/184H01M2200/20Y02E60/10H01M50/3425H01M50/578H01M2220/20
Inventor 李全坤王鹏邓平华朱凌波郭剑
Owner JIANGSU CONTEMPORARY AMPEREX TECHNOLOGY LIMITED
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