An overcurrent protection connecting piece, a lithium battery and an electric device

By designing cavities in the connecting piece and improving the structure of the receiving device, the problems of obstructed flow of molten beads and insufficient cooling were solved, achieving efficient melting and structural reinforcement, ensuring cell safety, and reducing the risk of short circuits.

CN224537300UActive Publication Date: 2026-07-21HEFEI GUOXUAN HIGH TECH POWER ENERGY
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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
2026-07-21

AI Technical Summary

Technical Problem

In the prior art, the molten bead receiving plate of the connecting piece is parallel and attached to the connecting piece, which causes the flow of molten beads to be obstructed and there is not enough space for cooling and solidification, which may cause short circuit risk.

Method used

Design an overcurrent protection connector, comprising a connector body, a fusible part, a cavity, and a receiving device. The cavity is provided with a first cavity and a second cavity that are interconnected. After the fusible part melts, the molten droplet first enters the first cavity and then enters the second cavity, providing sufficient space for cooling and condensation, and the receiving device prevents the molten droplet from falling further.

Benefits of technology

It improves fusing efficiency, ensures cell safety, reduces the volume of connecting pieces, enhances structural strength, prevents molten beads from overflowing, and reduces the risk of short circuits.

✦ Generated by Eureka AI based on patent content.

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    Figure CN224537300U_ABST
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Abstract

The utility model discloses a kind of overcurrent protection connecting piece, lithium battery and electrical equipment, belong to lithium battery technical field, connecting piece includes connecting piece body, the first surface and the second surface of oppositely arranged are provided to connecting piece body, the second surface is towards the side where electric core is;The fusing portion is arranged in the position of connecting piece body close to first surface, cavity is arranged between the fusing portion and the second surface, the second surface is disconnected by the cavity;Cavity is provided with receiving device, and the receiving device corresponds with fusing portion position;The inner wall of receiving device and cavity is connected.The utility model sets up cavity between fusing portion and second surface, so that the sufficient space cooling condensation of the molten bead generated by fusing portion is obtained, prevent molten bead from spilling over from receiving device.
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