Energy storage battery pack case with explosion-proof pressure relief channel

By designing a primary and secondary pressure relief unit in the energy storage battery PACK box, and combining it with guide bars, guide grooves, pressure relief holes, pressure relief pipes, and pressure relief channels, the problems of pressure relief lag and false triggering in the energy storage battery PACK box are solved. This enables the directional and rapid discharge of high-temperature and high-pressure gases and full-area pressure relief, thereby improving explosion-proof safety and reliability.

CN122338337APending Publication Date: 2026-07-03SHENZHEN LISHENGYUAN TECHNOLOGY CO LTD
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Patent Information

Application Number
CN202610609584.5
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2026-05-06
Publication Date
2026-07-03

AI Technical Summary

Technical Problem

The existing full-area explosion-proof membrane structure of energy storage battery PACK boxes has problems such as delayed pressure relief, uncontrollable direction, easy to be triggered by accident, and easy to age and fail, which can lead to instantaneous overpressure explosion and secondary damage to the box.

Method used

A battery pack with an explosion-proof pressure relief channel was designed, which includes a primary pressure relief unit and a secondary pressure relief unit. Through the combination of guide bars, guide grooves, pressure relief holes, pressure relief pipes and pressure relief channels, high-temperature and high-pressure gases can be discharged in a directional and rapid manner. In the event of thermal runaway of multiple modules, the pressure relief evacuation gap can be quickly unlocked by the separation drive component to achieve full-area pressure relief.

Benefits of technology

It enables precise response to thermal runaway of individual battery modules, preventing the expansion of local risks. The secondary pressure relief unit and the separation drive component work together to quickly unlock, relieve pressure, and evacuate, completely eliminating the defects of traditional explosion-proof membranes, improving explosion-proof safety and reliability, and reducing operation and maintenance risks.

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Abstract

This invention relates to the field of explosion-proof pressure relief technology, and provides an energy storage battery PACK box with an explosion-proof pressure relief channel, comprising: a box shell, a battery placement unit, a secondary pressure relief unit, and a separation drive assembly. The front of the box shell is rotatably connected to a sealing door, and a pressure relief evacuation notch is provided on the side of the box shell opposite to the sealing door. Guide strips are symmetrically arranged inside the box shell, and a placement rack is also provided on the inner wall of the box shell. A pressure relief channel is also fixedly connected to the back of the box shell. The battery placement unit can automatically cope with local thermal runaway scenarios. When the battery placement unit fails, the separation drive assembly is activated, causing the battery placement unit to partially separate, facilitating the operation of the subsequent secondary pressure relief unit and driving the battery placement unit to move out of the box shell through the pressure relief evacuation notch. This achieves rapid discharge of high-temperature and high-pressure gas and complete removal of the faulty module from the box, eliminating the risk of pressure accumulation and chain thermal runaway from the source.
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