Battery under-voltage protection circuit having segmented voltage processing function and protection method

Abstract

The invention discloses a battery under-voltage protection circuit having a segmented voltage processing function and a protection method and belongs to the technical field of battery under-voltage protection. By means of the device and the method, under-voltage protection can be performed on a battery, and the problem that a battery under-voltage state enables the battery performance to be reduced is solved. The technical scheme is that the battery under-voltage protection circuit comprises three under-voltage detection circuits and a controller, the voltage output end of the battery is respectively connected to the input ends of the three under-voltage detection circuits, the output end of the battery the respectively connected to three input interfaces of the controller, and three output interfaces of the controller are respectively connected to a battery indicating lamp circuit, a battery dormancy circuit and a battery switching circuit. The battery under-voltage protection method comprises the steps that the three under-voltage detection circuits feeds a battery under-voltage state to the controller when detecting that output voltage of the battery is reduced to be a set voltage value; the controller controls the battery indicating lamp circuit, the battery dormancy circuit and the battery switching circuit.

Description

technical field [0001] The invention relates to the technical field of battery undervoltage protection, in particular to a battery undervoltage protection circuit and a protection method with segment voltage processing functions. Background technique [0002] Electronic products such as handheld devices and notebook computers all use rechargeable batteries, and rechargeable batteries are rechargeable batteries with limited charging times. [0003] The use of rechargeable batteries is one of the advantages of handheld devices and notebook computers, which can greatly facilitate their use in various environments. The earliest battery introduced was nickel-cadmium battery (NiCd), but this battery has a "memory effect" and must be discharged before each charge, which is very inconvenient to use and was soon replaced by nickel-metal hydride batteries (NiMH). "Memory effect", and more than 10% of the power of the notebook battery per unit weight. The most commonly used battery ...

AI Technical Summary

Problems solved by technology

[0005] The technical task of the present invention is to address the above deficiencies, to provide a battery undervoltage protection circuit and a protection circuit with a segmented voltage processing function that can protect the battery and solve the problem of battery performance degradation caused by the battery undervoltage state. method

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