Single-wire SW identification circuit for three-electric system

Abstract

The invention relates to the technical field of lithium ion batteries, in particular to a single-wire SW identification circuit for a three-electric system. A single-wire SW identification circuit used for a three-electric system comprises an isolation power supply circuit. And a high and low level signal detection circuit. Compared with the prior art, the single-wire SW identification circuit for the three-electric system can identify high potential and low potential, can accurately distinguish and identify hardware even after a battery pack is protected, is simple in circuit, simple in logic, high in compatibility, stable and reliable, and is suitable for all LEV BMS three-electric systems.

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