Copper bar temperature sensing coulomb acquisition and switch control circuit of low-voltage motor home system

Abstract

The utility model discloses a copper bar temperature sensing coulomb acquisition and switch control circuit of a low-voltage motor home system, which comprises a main control unit, a temperature sensor, a Hall current sensor, a contactor driving unit and a contactor, wherein the temperature sensor is used for collecting the copper bar temperature of the low-voltage motor home system and transmitting the copper bar temperature to the main control unit in the form of an electric signal; the Hall current sensor is used for collecting copper bar current of the low-voltage motor home system and transmitting the copper bar current to the main control unit; the main control unit is used for judging the copper bar temperature collected by the temperature sensor and the copper bar current collected by the Hall current sensor, and if the copper bar temperature exceeds a set temperature value or the copper bar current exceeds a set current value, a disconnection instruction is sent to the contactor driving unit; the contactor driving unit is used for driving the switch end of the contactor to be disconnected according to the disconnection instruction. The device provided by the utility model has a repeated over-current and over-temperature protection function, and can achieve the automatic on-off control of the copper bar.

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