Battery

By designing a circuit breaker in the battery and using the thermal strain element to sense abnormal heating of the battery cell, the problem of operating temperature delay of the circuit breaker in the prior art is solved, and timely protection of the battery cell is achieved.

CN109326763BActive Publication Date: 2025-03-21NINGDE AMPEREX TECHNOLOGY LTD
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Patent Information

Application Number
CN201710642796.4
Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Filing Date
2017-07-31
Publication Date
2025-03-21
Estimated Expiration
2037-07-31

AI Technical Summary

Technical Problem

In the existing battery safety structure, the operating temperature of the circuit breaker is delayed, and the current cannot be cut off or reduced in time, resulting in the battery cell being unable to be effectively protected.

Method used

A battery is designed, including a circuit breaker, which consists of a first contact piece, a second contact piece and a thermal strain element, which is connected between the tip and the thermal strain element, and the thermal strain element generates abnormal heat through thermally coupled to the induction cell and cuts off or reduces current.

Benefits of technology

By reducing the length of the thermal conductivity path, the thermal strain element can promptly induce abnormal heating of the battery cell, cut off or reduce the current, and effectively protect the battery cell.

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Abstract

The embodiment of the present application provides a battery for use with an electrical device, the battery comprising: a battery body, the battery body being provided with a first pole ear; and a circuit breaker, the circuit breaker comprising a first contact, a second contact and a thermal strain element, wherein the first contact is connected between the first pole ear and the thermal strain element, and the second contact comprises a first end connected to the electrical device and a second end detachably contacting the body of the first contact. The purpose of the present application is to provide a battery, so that at least when the battery cell is heated, the circuit breaker can timely cut off or reduce the current, thereby protecting the battery cell.
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