一种用于阻燃和 / 或降温电芯的电池壳体

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By setting blind holes inside the battery casing and separating them into sealed chambers for flame retardant and coolant, the problems of insufficient heat dissipation and flame retardancy in existing battery casings are solved, achieving efficient cooling and integrated flame retardancy of the battery, and improving the battery's safety and cycle performance.

CN224519948UActive Publication Date: 2026-07-17SHANGHAI PUNA ENERGY TECH CO LTD

Patent Information

Authority / Receiving Office: CN · China
Patent Type: Utility models(China)
Current Assignee / Owner: SHANGHAI PUNA ENERGY TECH CO LTD
Filing Date: 2025-07-16
Publication Date: 2026-07-17

AI Technical Summary

Technical Problem

Existing battery casings are inadequate in terms of heat dissipation and flame retardancy, failing to achieve efficient cooling and flame retardancy simultaneously, and posing safety hazards.

Method used

A blind hole is set inside the battery casing to separate a flame retardant and a coolant sealed chamber. The chamber is separated by a sealing gasket, and the flame retardant and coolant are filled into the blind hole respectively to achieve a synergistic effect of cooling and flame retardancy.

Benefits of technology

It significantly improves battery safety and cycle performance, avoids the decrease in heat dissipation efficiency and water ingress risk caused by prolonged use, achieves uniform coverage of flame retardancy and cooling, and enhances battery stability and safety.

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Abstract

本实用新型公开了一种用于阻燃和 / 或降温电芯的电池壳体。该电池包括壳体以及开设于所述壳体壁内的盲孔；所述盲孔为阻燃剂填充腔和 / 或冷却剂填充腔。能够保持电池的物理稳定性，确保壳体在电池循环过程中仍能保持稳定，避免因结构变化导致的电池性能下降或安全问题，在盲孔中设置密封垫，能够进一步提高降温和阻燃一体化地效果，实现降温和阻燃协同作用，提高电池的安全性以及循环性能。该电池壳体用于动力电池、储能电池领域。

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Claims

1. A battery case for a battery cell for flame retardation and / or temperature reduction, characterized by, It includes a housing (1) and a blind hole (2) formed in the wall of the housing (1); the blind hole (2) is a flame retardant filling cavity and / or a coolant filling cavity; The blind hole (2) is provided with a number of sealing gaskets (3) to divide the blind hole (2) into a number of sealing chambers (4); the sealing chambers (4) include flame retardant sealing chambers and coolant sealing chambers, which are arranged at intervals in the blind hole (2).

2. The battery case according to claim 1, characterized by The number of the sealing gaskets (3) is 1-4.

3. The battery case according to claim 1, wherein The height of each of the sealed chambers (4) is 1 / 2 to 1 / 4 of the height of the shell (1).

4. The battery case of claim 1, wherein, The blind hole (2) is a straight hole of the same diameter. The open end of the blind hole (2) is located at the open end of the battery casing and is sealed to the end cap of the casing.

5. The battery case according to claim 4, characterized by The total area of the blind hole (2) at the open end is 5-30% of the total area of the open end wall of the battery casing.

6. The battery case of claim 1, wherein, The gap between adjacent blind holes (2) is 5-10 mm.

7. The battery case of claim 1, wherein, The diameter of the blind hole (2) is 30-50% of the thickness of the shell (1).

8. The battery housing of any one of claims 1-7, wherein, The flame retardant filling cavity contains flame retardant, and the coolant filling cavity contains coolant.