Battery shell and single battery

By arranging a limiting bracket in the accommodating cavity of the battery shell to limit the electrode group, the problem of electrode group movement during thermal runaway of the lithium-ion battery shell is solved, and the safety of the battery and the smoothness of the exhaust channel are improved.

CN223321409UActive Publication Date: 2025-09-09SVOLT ENERGY TECHNOLOGY CO LTD
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Patent Information

Application Number
CN202422591541.8
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-10-25
Publication Date
2025-09-09
Estimated Expiration
2034-10-25

AI Technical Summary

Technical Problem

When existing lithium-ion battery casings experience thermal runaway, the lower plastic parts have poor strength and high-temperature resistance, causing the electrode group to move, blocking the exhaust channel, and reducing battery safety.

Method used

A limiting bracket is provided in the accommodating cavity of the battery shell, and the electrode group is limited in the length direction by the limiting bracket to prevent the electrode group from moving and ensure that the exhaust channel is unobstructed.

Benefits of technology

The safety of the electrode group and the smoothness of the exhaust channel are improved, and the overall safety performance of the battery is enhanced.

✦ Generated by Eureka AI based on patent content.

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    Figure CN223321409U_ABST
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Abstract

The utility model belongs to the technical field of batteries, and discloses a battery shell and a single battery. The battery shell comprises a shell body and a plurality of limiting brackets, the shell body is provided with a containing cavity, an opening is formed in at least one side of the containing cavity in the first direction, the pole group can be assembled into the containing cavity from the opening, and a cover plate assembly can be arranged at the opening in a sealed mode; and the plurality of limiting brackets are arranged on at least one inner wall, close to the opening, of the accommodating cavity in the second direction, and the limiting brackets can limit the pole group in the first direction. The limiting bracket is arranged at the position, close to the opening, of the accommodating cavity in the shell body, so that the pole group in the single battery can be limited in the length direction, and the pole group can be limited in the length direction even if an insulating part in the cover plate assembly is fused due to thermal runaway of the internal pole group; and the safety problem caused by the shielding of the exhaust passage due to the movement of the single battery is avoided, and the safety of the single battery and the smoothness of the exhaust passage are improved.
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Citation Information

Cited By

  • Shell assembly and battery

    CN121584128A