Battery protection circuit and battery assembly

By designing a battery protection circuit for detecting the voltage drop and output current of the battery cell, the three-terminal fuse is used to protect under preset conditions, the problems of short battery cells and electrical fire in the existing technology are solved, and the battery is significantly improved Protection performance.

CN222262163UActive Publication Date: 2024-12-27ZHEJIANG SUNWODA ELECTRONIC CO LTD
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Patent Information

Application Number
CN202420083693.4
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-01-12
Publication Date
2024-12-27
Estimated Expiration
2034-01-12

AI Technical Summary

Technical Problem

In the existing battery protection technology, the fuse cannot effectively prevent the battery cell from being short when replacing TCO, and there are safety hazards for electrical appliances to catch fire, and the protection performance is low.

Method used

Design a battery protection circuit, including a first protection device and a first detection device, for detecting the voltage drop and output current of the battery cell, when the voltage drop is greater than the preset value and the duration is greater than the preset time, and the output current is greater than the When the current is preset, it is protected by a three-terminal fuse to ensure rapid response and prevent shortness of the battery cell.

Benefits of technology

Effectively prevent the battery cell from being shorter, improve the battery cell protection ability, avoid the occurrence of electrical fires, and significantly improve the battery protection performance.

✦ Generated by Eureka AI based on patent content.

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    Figure CN222262163U_ABST
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Abstract

The utility model provides a battery protection circuit and a battery assembly. The battery protection circuit comprises a first protection device and a first detection device, the first end of the first protection device is connected with the first end of the first battery cell, the second end of the first protection device is connected with the first end of the first detection device, the second end of the first battery cell and the second end of the first detection device, and the third end of the first protection device is connected with the first end of the second battery cell and the third end of the first detection device; the fourth end of the first detection device is connected with the second end of the second battery cell; the first detection device is used for detecting cell voltage drop and output current of the first cell and the second cell; and the first protection device is used for protecting the first battery cell and the second battery cell under a specific condition. According to the scheme, the battery core can be effectively prevented from being short inside, the overlarge voltage drop of the battery core can be quickly responded, the protection capability of the battery core is improved, and electric appliance fire disasters are avoided.
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