Battery protection circuit and lithium battery circuit

Abstract

The invention provides a battery protection circuit and a lithium battery circuit, and relates to the technical field of battery charging / discharging protection. The battery protection circuit comprises a charging / discharging circuit, a controller, a power source anode interface, a power source cathode interface, a battery anode interface and a battery cathode interface. The charging / discharging circuit comprises a first power pipe and a second power pipe. The controller is provided with a first driving port, a second driving port, a first power source port, a second power source port and a grounding port, and is integrated with a reverse connection protection circuit. When the power source anode interface is connected to a power source cathode, the reverse connection protection circuit opens a current channel between a power source and the controller; when the battery anode interface is connected to a battery cathode, the reverse connection protection circuit opens the current channel between a battery and the controller. Through the design, the problem which exists in an existing battery protection technology that the reliability is low since a short circuit is likely to occur in the production and using process is solved.

Description

technical field [0001] The invention relates to the technical field of battery charge / discharge protection, in particular to a battery protection circuit and a lithium battery circuit. Background technique [0002] With the continuous development of electronic technology, electronic products are widely used in various occasions. Batteries are also widely used as power sources for electronic products. In order to improve the safety of battery use and prolong the service life of the battery, a special battery protection circuit will be set to protect the battery. [0003] In the prior art, the battery protection circuit generally adopts a battery negative pole protection scheme. For some special applications, if the battery negative electrode protection scheme is adopted, short-circuit problems are prone to occur during the production and use of the battery, which will greatly reduce the safety of battery use and increase the packaging cost of the battery. Therefore, with t...

AI Technical Summary

Problems solved by technology

[0005] In view of this, the purpose of the present invention is to provide a battery protection circuit to improve the existing battery protection technology due to the short circuit in the production and use of the low reliability problem, effectively improving the safety of the battery protection circuit sex

[0006] Another object of the present invention is to provide a lithium battery circuit to improve the existing battery protection technology, which is prone to short circuit during production and use and has low reliability, and effectively improves the safety of the battery protection circuit.

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