Battery protection circuit, battery pack and electronic equipment

By introducing the main control module and a safety discharge module into the battery protection circuit, the battery operation status is collected and discharged under abnormal conditions, the battery safety problem and the problem of rapid energy release are solved, and the safety protection of the load and the rapid release of battery energy are achieved.

CN222638202UActive Publication Date: 2025-03-18ZHUHAI COSMX BATTERY CO LTD
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Patent Information

Application Number
CN202420986162.6
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-05-08
Publication Date
2025-03-18
Estimated Expiration
2034-05-08

AI Technical Summary

Technical Problem

When the battery is damaged by external forces, it is easy to cause internal combustion, fire, explosion and other safety problems, and the existing charging and discharging circuits cannot quickly release battery energy, resulting in a sharp increase in load temperature.

Method used

A battery protection circuit is designed, including a main control module and a safety discharge module. The main control module collects the target parameters of the battery's operating state and controls the safety discharge module to discharge the battery under abnormal conditions. The two ends of the safety discharge module are directly connected to the positive and negative poles of the battery to quickly release the battery energy.

Benefits of technology

By quickly releasing battery energy, avoiding energy transfer to the load, reducing load temperature, ensuring load safety, and reducing impedance through short discharge circuits, supporting a larger discharge current.

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Abstract

The utility model provides a battery protection circuit, a battery pack and electronic equipment, and is applied to the technical field of batteries, the circuit comprises a main control module and a safe discharge module, the safe discharge module is connected with the positive electrode and the negative electrode of a battery body, and the output end of the main control module is connected with the control end of the safe discharge module. The main control module collects target parameters representing the running state of the battery body and controls the safe discharging module to discharge the battery body under the condition that the target parameters represent that the battery body runs abnormally. Therefore, the energy of the battery body can be released as soon as possible through the safe discharge module, the battery energy cannot be transmitted to the battery load or can be transmitted to the battery load as little as possible, the electricity utilization safety of the battery load is ensured, and the discharge loop is short, so that the impedance of the discharge loop can be reduced, the large discharge current can be supported, and the quick release of the battery energy is realized.
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