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Explosion-proof valve for battery pack and battery pack

A technology for battery packs and explosion-proof valves, which is applied to battery pack components, circuits, electrical components, etc., can solve problems such as increased opening time of explosion-proof valves, high opening pressure of thimble-type explosion-proof valves, and slow pressure relief rate of explosion-proof valves. The effect of fast opening response, high pressure relief efficiency, and improved safety

Active Publication Date: 2020-11-20
SVOLT ENERGY TECHNOLOGY CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Most of the explosion-proof valves used in traditional battery packs are spring-type explosion-proof valves or thimble-type explosion-proof valves. After the spring-type explosion-proof valve is opened, the explosion-proof valve will automatically close due to the decrease in the internal pressure of the battery pack, resulting in a slow release rate of the explosion-proof valve. However, the opening pressure required by the thimble-type explosion-proof valve is relatively high, which increases the opening time of the explosion-proof valve and cannot be opened instantly, thus affecting the exhaust and pressure relief effect of the explosion-proof valve, which in turn affects the safety of the battery pack. There is room for improvement.

Method used

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  • Explosion-proof valve for battery pack and battery pack
  • Explosion-proof valve for battery pack and battery pack
  • Explosion-proof valve for battery pack and battery pack

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Embodiment Construction

[0034] It should be noted that, in the case of no conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other.

[0035] Refer below Figure 1-Figure 12 An explosion-proof valve 100 for a battery pack according to an embodiment of the present invention is described.

[0036] The explosion-proof valve 100 for a battery pack according to an embodiment of the present invention may include: a valve body 1 , a valve cover 2 and a locking and opening assembly 3 .

[0037] Such as Figure 1-Figure 4 As shown, the explosion-proof valve 100 is installed on the battery pack, for example, on the casing of the battery pack, so as to discharge the gas and pressure generated in the battery pack to the outside of the battery pack in a directional manner when the battery pack is thermally runaway. To avoid a more serious fire and explosion, thereby improving safety.

[0038] Wherein, the valve body 1 has a vent hole 11, and the vent...

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Abstract

The invention discloses an explosion-proof valve for a battery pack and the battery pack. The explosion-proof valve for the battery pack comprises a valve body, a valve cover and a locking and openingassembly. A vent hole is formed in the valve body; the valve cover is connected with the valve body and blocks one end of the vent hole; the locking and opening assembly is arranged on the valve body, the locking and opening assembly is suitable for locking a valve deck on the valve body, and when the locking and opening assembly is impacted by strong airflow, the locking and opening assembly isopened so that the valve deck can be separated from the valve body. The explosion-proof valve is higher in opening reaction speed, higher in pressure relief efficiency and lower in required opening force, high-temperature and high-pressure gas generated when thermal runaway happens to the battery pack can be exhausted within a short time, and then the safety of the battery pack is effectively improved.

Description

technical field [0001] The invention relates to the technical field of power batteries, in particular to an explosion-proof valve for a battery pack and the battery pack. Background technique [0002] Most of the explosion-proof valves used in traditional battery packs are spring-type explosion-proof valves or thimble-type explosion-proof valves. After the spring-type explosion-proof valve is opened, the explosion-proof valve will automatically close due to the decrease in the internal pressure of the battery pack, resulting in a slow release rate of the explosion-proof valve. However, the opening pressure required by the thimble-type explosion-proof valve is relatively high, which increases the opening time of the explosion-proof valve and cannot be opened instantly, thus affecting the exhaust and pressure relief effect of the explosion-proof valve, which in turn affects the safety of the battery pack. There is room for improvement. . Contents of the invention [0003] I...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M2/12
CPCY02E60/10
Inventor 张德磊张海建郭志远华东波范凯
Owner SVOLT ENERGY TECHNOLOGY CO LTD
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