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Battery cover plate

A battery cover and cover technology, applied in the direction of battery cover/end cover, battery pack components, battery box/jacket, etc., can solve the problem of unreliable use of battery fire extinguishing system, achieve reliable use and delay the release of energy , the effect of high efficiency

Pending Publication Date: 2019-04-05
ZHENGZHOU YUTONG BUS CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to provide a battery cover to solve the problem of unreliable use of the battery fire extinguishing system in the prior art

Method used

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  • Battery cover plate
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Embodiment Construction

[0039] Embodiments of the present invention will be further described below in conjunction with the accompanying drawings.

[0040] Specific embodiment one of the battery cover plate of the present invention, such as Figure 1 to Figure 8As shown, the battery cover includes a cover body 1. The cover body 1 is sealed and buckled on the battery case 8 when in use. The cover body 1 has a mounting position, and an output terminal 2 is provided on the mounting position. The output terminal 2 is used for To connect with the tabs of the cell unit placed in the inner cavity of the battery case, the connection method is a fixed connection such as laser welding, and the output terminal is used to draw out the current of the cell unit. A liquid injection hole 3 is also provided on the cover plate body 1 for injecting electrolyte solution into the inner cavity of the battery case 8 . A groove is provided on the outer surface of the cover body 1 , the notch of the groove faces outward, an...

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Abstract

The invention relates to a battery cover plate, and aims to solve the problem that the use of a battery fire extinguishing system in the prior art is unreliable, wherein the battery cover plate comprises a cover plate body which is encapsulated at an opening in the top of the battery shell, and a mounting position used for installing an output terminal is formed in the cover plate body; the battery cover plate further comprises a fire extinguishing agent cavity arranged in the cover plate body, and the fire extinguishing agent cavity is provided with a fire extinguishing agent containing cavity for storing a fire extinguishing agent; the cavity wall of the fire extinguishing agent cavity comprises a cavity wall part used for separating the fire extinguishing agent containing cavity and theinner cavity of the battery shell; and the cavity wall part is provided with an inner explosion-proof structure which is opened to be communicated with the fire extinguishing agent containing cavityand the inner cavity of the battery shell when the pressure of the inner cavity of the battery shell reaches a set value. The battery cover plate can automatically extinguish fire when the battery unit has a fire, so that the efficiency is higher, and the use is more reliable; and meanwhile, the fire extinguishing agent with the same or even longer service life than the battery unit can be selected, and maintenance is not needed in the later period.

Description

technical field [0001] The invention relates to a battery cover plate. Background technique [0002] With the rapid growth of the new energy vehicle market, the market share of new energy vehicles is rapidly increasing, and the requirements for driving range are getting longer and longer. This requires a significant increase in the specific energy of the power battery. In 2030, the specific energy of the power battery To increase to 300wh / kg. With the improvement of the specific energy density of the power battery, the safety requirements of the power battery are also improved: according to the relevant national and industry standards, it is required that the power battery does not suffer from thermal runaway and heat loss under abuse conditions such as overcharge, overdischarge, and high temperature. Out of control expansion. But the current battery technology does not have a good solution. This leads to the fact that even if the power battery with high specific energy c...

Claims

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Application Information

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IPC IPC(8): H01M2/04H01M2/12H01M50/147H01M50/30
CPCH01M50/147H01M50/30Y02E60/10
Inventor 曹瑞中尹利超周时国
Owner ZHENGZHOU YUTONG BUS CO LTD
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