Explosion-proof device for battery pack and battery pack
An explosion-proof device and battery pack technology, which is applied in the field of battery packs, can solve problems such as failure to meet the thermal runaway requirements of battery packs, explosion-proof valve pressure relief and fire filtration, etc., and achieve the effect of improving safety performance
Active Publication Date: 2021-11-16
SVOLT ENERGY TECHNOLOGY CO LTD
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Problems solved by technology
[0003]
In the related technology, a spring explosion-proof valve is usually installed on the side beam of the battery pack, but if the battery pack cannot be released immediately, or the explosion-proof valve is not released in time or the fire is not filtered in time, the battery pack will explode and cannot meet the requirements. Thermal runaway requirements for battery packs
Method used
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[0043] Specific embodiments of the present disclosure will be described in detail below in conjunction with the accompanying drawings. It should be understood that the specific embodiments described here are only used to illustrate and explain the present disclosure, and are not intended to limit the present disclosure.
[0044] In the present disclosure, unless stated to the contrary, the used orientation words such as "upper", "lower", "top" and "bottom" are defined according to the normal installation of the explosion-proof device for the battery pack provided by the present disclosure , for details, please refer to Figure 4 Orientation shown on the drawing. "Inside" and "outside" refer to the inside and outside of the contour of the corresponding part. Terms such as "first" and "second" used in the present disclosure are for distinguishing one element from another element, and do not have sequence or importance. In addition, when the following description refers to the...
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The invention relates to an explosion-proof device for a battery pack and the battery pack. The explosion-proof device comprises an explosion-proof valve arranged on the inner side of a boundary beam; a ventilation and fire filtering structure which is arranged on the outer side of the edge beam and communicates with the anti-explosion valve, wherein the ventilation and fire filtering structure comprises a first filter screen and a second filter screen, the first filter screen is of a U-shaped structure with an opening facing the anti-explosion valve, and first filter holes used for ventilation and fire filtering are formed in one side face of the first filter screen; a second filter screen which is of a U-shaped structure arranged in the same direction as the first filter screen, wherein the second filter screen is contained in the first filter screen at intervals, and second filter holes used for ventilating and filtering fire are formed in the side face, away from the first filter holes, of the second filter screen; and a gap between the first filter screen and the second filter screen forms a channel allowing flame and gas to pass through. And the flame and the gas detour in the channel formed by the first filter screen and the second filter screen, so that the flame and the gas in the battery pack are discharged out of the battery pack, and the safety performance of the battery pack is improved.
Description
technical field [0001] The present disclosure relates to the technical field of battery packs, and in particular, relates to an explosion-proof device for a battery pack and the battery pack. Background technique [0002] With the widespread use of new energy vehicles, the safety requirements for battery packs are getting higher and higher. When a short circuit occurs inside the battery pack or thermal runaway of the battery cells occurs, the temperature and pressure inside the battery pack will rise rapidly. Exhaust quickly, and the battery pack may explode due to excessive expansion. [0003] In the related technology, a spring explosion-proof valve is usually installed on the side beam of the battery pack, but if the battery pack cannot be released immediately, or the explosion-proof valve is not released in time or the fire is not filtered in time, the battery pack will also explode and cannot meet the requirements. Thermal runaway requirements for battery packs. Cont...
Claims
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IPC IPC(8): H01M50/383H01M50/358H01M50/333H01M50/258H01M50/249B60L50/64B60L3/00A62C3/16
CPCH01M50/383H01M50/358H01M50/333H01M50/258H01M50/249B60L50/64B60L3/0046A62C3/16H01M2220/20Y02T10/70Y02E60/10
Inventor 陈许超于拴柱张海建唐丽娟
Owner SVOLT ENERGY TECHNOLOGY CO LTD