Battery protection system and battery system

Abstract

The invention discloses a battery protection system and a battery system. The battery protection system comprises a trigger circuit and a voltage division control circuit. The trigger signal output end of the trigger circuit is connected with the control end of the voltage division control circuit and used for controlling the voltage division output end of the voltage division control circuit to output a voltage division signal when the trigger signal output end outputs a trigger signal. The voltage division output end of the voltage division control circuit is connected with the input end ofan over-discharge protection circuit; when the voltage division control circuit outputs a voltage division signal, the over-discharge protection circuit controls the first switch unit to be switched off and the second switch unit to be switched on, so that the over-discharge protection circuit is switched off, meanwhile, the battery protection system is in a completely switched-off state, the battery protection system and the load circuit are prevented from consuming current, and the battery voltage can be maintained at a stable voltage for a long time. When the battery protection system is started again for use, the battery protection system can be normally used only by activating the charger, and the battery does not need to be charged for a long time, so that the experience effect of the client is improved.

Description

technical field [0001] The embodiments of the present invention relate to the technical field of batteries, and in particular to a battery protection system and a battery system. Background technique [0002] The battery system can power the application system. For example, when the application system is a display device, the battery system supplies power to the display device. Current battery systems include batteries and battery protection systems. When the application system is in the standby state, the battery protection system in the battery system will consume current by itself, and the system load will also consume current, which will cause the battery voltage to drop, which will easily cause the battery voltage to drop to the over-discharge of the over-discharge protection circuit in the battery protection system. Below the protection voltage. When the battery system is started to use again, the battery system needs to be charged for a long time before it can be u...

AI Technical Summary

Problems solved by technology

When the application system is in the standby state, the battery protection system in the battery system will consume current by itself, and the system load will also consume current, which will cause the battery voltage to drop, which will easily cause the battery voltage to drop to the over-discharge of the over-discharge protection circuit in the battery protection system. Below the protection voltage

When the battery system starts to use again, the battery system needs to be charged for a long time before it can be used normally, which affects the experience of the client

Especially in the application system of small-capacity batteries, the long-term self-consumption of the battery system and system load is particularly likely to cause the battery system to enter the over-discharge protection state. Charge

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