A power battery terminal and cell with a fusible protection structure
By setting a hollow cavity inside the power battery terminal and depositing a high resistivity material layer, the thermal runaway problem of traditional power battery terminals during short circuits is solved, achieving rapid melting and precise control, thus improving safety.
CN224437877UActive Publication Date: 2026-06-30HEFEI GUOXUAN HIGH TECH POWER ENERGY
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- HEFEI GUOXUAN HIGH TECH POWER ENERGY
- Filing Date
- 2025-06-27
- Publication Date
- 2026-06-30
AI Technical Summary
Technical Problem
Traditional power battery terminals cannot melt quickly when short-circuited, leading to heat accumulation and thermal runaway. External fuses take up space and have insufficient response speed, and existing fuse structures have large errors.
Method used
A cavity is set in the hollowed-out fusing area of the electrode body, and a high resistivity material layer is deposited on the surface of the cavity to form an integrated fusing layer, which increases the electrode resistance to achieve rapid fusing and avoid thermal runaway.
Benefits of technology
It achieves rapid melting of the electrode in the event of a short circuit, reducing the risk of thermal runaway, with fast response speed and small error, and adapts to different battery capacity requirements.
✦ Generated by Eureka AI based on patent content.
Smart Images
Figure CN224437877U_ABST
Abstract
This utility model belongs to the field of power battery safety technology, and discloses a power battery terminal and cell with a fusible protection structure. The terminal includes a terminal body, which comprises a substrate layer and a fusible layer stacked on top of each other. The fusible layer has a hollowed-out fusible area, within which at least one cavity is formed. A high-resistivity material layer is deposited on the inner wall of the cavity. The hollowed-out fusible area of the terminal body of this utility model has a cavity, and the high-resistivity material is deposited on the cavity surface. This reduces the current-carrying area of the terminal and increases the terminal resistance, allowing heat to accumulate rapidly at the terminal to the material's melting point during a short circuit, quickly melting and blocking the current, thus reducing the risk of thermal runaway of the cell.
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