Hard case battery and its one-way vent valve

A one-way exhaust valve and battery technology, which is applied in the direction of electrical components, secondary batteries, exhaust plug devices, etc., can solve the problems of poor battery sealing performance and affect the safe use of batteries, and achieve small dead volume and improved use Life and safety performance, the effect of long service life

Active Publication Date: 2020-10-02
CONTEMPORARY AMPEREX TECH CO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, since the exhaust valve is opened, the sealing performance of the battery is deteriorated, and the outside air is easy to invade the internal battery cell, which affects the safe use of the battery.

Method used

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  • Hard case battery and its one-way vent valve
  • Hard case battery and its one-way vent valve

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Embodiment Construction

[0028] In order to make the object of the invention, technical solution and beneficial technical effects of the present invention clearer, the present invention will be described in detail below in conjunction with the accompanying drawings and specific implementation methods. It should be understood that the implementations described in this specification are only for explaining the present invention, not for limiting the present invention.

[0029] see figure 1 As shown, the hard shell battery of the present invention includes: a battery case 200, a battery cell 202 accommodated in the battery case 200 (the battery cell 202 is provided with a positive electrode 203 and a negative electrode 204), a non-aqueous electrolyte filled in the battery case 200, a sealed The battery top cover 201 assembled on the battery casing 200 , and the one-way exhaust valve 100 installed on the battery top cover 201 .

[0030] The battery casing 200 can not be deformed under the condition of 0....

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Abstract

The invention discloses a one-way exhaust valve for a hard-shell battery, which comprises: a hollow valve body that can be installed on the battery shell of the hard-shell battery or on the top cover of the battery, the bottom end of the valve body communicates with the inside of the battery, and the valve body The top of the valve body extends out of the battery; the adsorption layer is sealed and installed in the valve body, and the adsorption layer is used to absorb the gas generated inside the battery and discharge the gas from the top of the valve body to the outside of the battery; The layer allows the gas inside the battery to exit the battery in one direction to the outside. Compared with the prior art, the one-way exhaust valve of the hard-shell battery of the present invention does not need to open the valve, and the CO generated inside the battery can be released only by the principle of adsorption and desorption. 2 , CO, CH 4 Such small molecular gases are discharged to the outside, and the exhaust operation is simple and has ideal sealing performance, which can significantly improve the service life and safety performance of hard-shell batteries. In addition, the invention also discloses a hard shell battery.

Description

technical field [0001] The invention belongs to the battery field, and more specifically, the invention relates to a hard shell battery and a one-way exhaust valve thereof. Background technique [0002] Compared with lead-acid batteries, nickel-metal hydride batteries, and nickel-cadmium batteries, lithium-ion batteries have the advantages of high energy density and long cycle life, so they are widely used as power sources for electric vehicles. During storage or cycling of lithium-ion batteries, the electrolyte will inevitably react with the positive active material and generate gas. As the volumetric energy density requirements for lithium-ion batteries are getting higher and higher, the dead volume of the battery's internal design is getting smaller and smaller. When a small amount of gas is generated inside the battery, the internal pressure of the battery will increase sharply. If the internal pressure of the battery is too high, the battery case will be deformed or ev...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01M2/12H01M10/058H01M2/02H01M2/04H01M10/0525
CPCH01M10/0525H01M10/058H01M50/10H01M50/147H01M50/30H01M50/394Y02E60/10Y02P70/50
Inventor 唐兴宇韩昌隆周晓崇
Owner CONTEMPORARY AMPEREX TECH CO
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