Battery pack shell assembly based on basalt fiber material

By using the bottom guard body, sealing sheet and pressure relief part of basalt fiber material in the battery case, the problem of limited pressure relief direction when the battery is thermally out of control is solved, and the effect of improving safety, reducing layout difficulty and extending service life is achieved.

CN119695382AInactive Publication Date: 2025-03-25SICHUAN JIABAO TECH CO LTD
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Patent Information

Application Number
CN202510198158.2
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2025-02-22
Publication Date
2025-03-25
Estimated Expiration
Not applicable · inactive patent

AI Technical Summary

Technical Problem

When the existing battery pack shell structure is thermally out of control, the pressure relief direction is limited, which can easily cause high-temperature and high-pressure gas substances to ignite the vehicle structure, increasing the risk of spontaneous combustion, and at the same time it is difficult to arrange and not have long service life.

Method used

The battery case assembly based on basalt fiber material is adopted, and the sealing space between the bottom guard plate and the tray is used as the pressure relief channel to guide the thermal discontrol direction of the battery through the combination of the bottom guard plate main body, the sealing sheet and the pressure relief member.

Benefits of technology

Effectively guide the thermal runaway direction of the battery, delay the vehicle's spontaneous combustion time, improve driving safety; reduce layout difficulty, adapt to most vehicles; improve service life and operating reliability.

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Abstract

The invention provides a battery pack shell assembly based on a basalt fiber material, and relates to the technical field of battery pack shell structure design, and the battery pack shell assembly comprises a tray, a bottom protection plate main body, a plugging sheet and a pressure relief piece. The bottom protection plate body is made of basalt fiber materials, the top face of the bottom protection plate body is sunken inwards to form a sealed cavity, and a pressure relief through hole is formed in the bottom face of the bottom protection plate body. And the plugging sheet is arranged in the pressure relief through hole. And the pressure relief piece is arranged in the sealing cavity, and the pressure relief piece is configured to be capable of damaging the plugging piece after the pressure intensity in the sealing cavity reaches a set threshold value. The battery pack shell assembly based on the basalt fiber material comprises a normal state and a pressure relief state; in a normal state, the blocking piece blocks the pressure relief through hole, and in a pressure relief state, the pressure relief piece damages the blocking piece. The thermal runaway direction of the battery can be effectively guided, the driving safety is improved, the device can be effectively adapted to most vehicles, the arrangement difficulty is low, the service life is long, and the operation reliability is high.
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Citation Information

Patent Citations

  • Battery box, battery pack and vehicle

    CN217606959U

  • Anti-explosion valve of battery pack and battery pack

    CN111720598A

  • Battery shell for new energy automobile

    CN208835106U

  • Explosion-proof valve and battery pack

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  • Explosion relief valve for lithium battery

    CN219553718U