Over-discharge protection circuit, battery protection board and electronic equipment

Abstract

The invention provides an over-discharge protection circuit, a battery protection board and electronic equipment. The over-discharge protection circuit is characterized in that a first end of the over-discharge protection circuit is used for connecting a positive tab of a battery, and a second end is used for connecting a negative tab of the battery; the third end and the fourth end are correspondingly connected with the first end and the second end of the battery electric quantity acquisition circuit; the first end is connected with the third end of the over-discharge protection circuit; the second end is connected with the fourth end of the over-discharge protection circuit through the first switch; the first control module is connected with a first control end of the first switch, and the first control module is used for controlling the first switch to be turned off when the voltage of the battery is lower than a preset first voltage threshold value after the electronic equipment is turned off, and controlling the first switch to be turned on when the voltage of the battery is not lower than the preset first voltage threshold value. The problem that the battery is overdischarged after the electronic equipment is shut down can be solved, and the battery loss after the electronic equipment is shut down is reduced.

Description

technical field [0001] The present application relates to the technical field of charge and discharge, in particular to an over-discharge protection circuit, a battery protection board and electronic equipment. Background technique [0002] After an electronic device (such as a mobile phone) is turned off, the electrical circuit in the electronic device still exists as an impedance, resulting in battery leakage. If the leakage time is long enough, the battery will be over-discharged (referred to as over-discharge), which will easily lead to battery damage. Contents of the invention [0003] The application provides an over-discharge protection circuit and electronic equipment, which can solve the problem of excessive battery discharge after the electronic equipment is shut down, and reduce battery loss after the electronic equipment is shut down. [0004] In the first aspect, the embodiment of the present application provides an over-discharge protection circuit, which is...

AI Technical Summary

Problems solved by technology

[0003] The application provides an over-discharge protection circuit and electronic equipment, which can solve the problem of excessive battery discharge after the electronic equipment is shut down, and reduce battery loss after the electronic equipment is shut down

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