Explosion-proof valves and battery packs for battery packs
A battery pack and explosion-proof valve technology, which is applied to battery pack components, circuits, electrical components, etc., can solve the problems of increased opening time of explosion-proof valves, large opening pressure of thimble-type explosion-proof valves, and slow pressure relief rates of explosion-proof valves. The effect of fast opening response, high pressure relief efficiency, and improved safety
Active Publication Date: 2022-04-22
SVOLT ENERGY TECHNOLOGY CO LTD
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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.
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[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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The invention discloses an explosion-proof valve for a battery pack and the battery pack, wherein the explosion-proof valve for the battery pack comprises: a valve body, a valve cover and a locking and opening assembly. There is a vent hole on the valve body; the valve cover is connected to the valve body and blocks one end of the vent hole; the locking and opening assembly is arranged on the valve body, and the locking and opening assembly is suitable for When the valve cover is locked on the valve body, and when the lock-opening component is impacted by a strong air flow, the lock-opening component is opened so that the valve cover can be separated from the valve body . The explosion-proof valve has faster opening response speed, higher pressure relief efficiency, and lower opening force required. It can discharge the high-temperature and high-pressure gas generated by the battery pack in a short period of time when thermal runaway occurs, thereby effectively improving the performance of the battery pack. security.
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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IPC IPC(8): H01M50/325H01M50/333
CPCY02E60/10
Inventor 张德磊张海建郭志远华东波范凯
Owner SVOLT ENERGY TECHNOLOGY CO LTD