Automatic charge and discharge and capacity detection device of storage battery

The utility model discloses an automatic charge and discharge and capacity detection device of a storage battery. The device comprises an ARM control unit, a storage battery charge unit and a BUCK step-down circuit drive and constant current output unit. The output end of the ARM control unit is respectively connected with the storage battery charge unit and the BUCK step-down circuit drive and constant current output unit. The ARM control unit is composed of a signal collecting circuit, an ARM minimum system circuit, a communication control circuit and a host computer, wherein the signal collecting circuit, the ARM minimum system circuit, the communication control circuit and the host computer are connected in order. The storage battery charge unit comprises a charger, a storage battery and a corresponding charge control circuit. The positive electrode of the charger is connected with the power supply positive electrode of the ARM control unit, so as to power the ARM control unit. The BUCK step-down circuit drive and constant current output unit comprises an MOS drive circuit, a BUCK step-down circuit and a discharge load resistor. According to the utility model, the structure of the device is simple; the functions of automatic storage battery charge and discharge are realized without manual operation; and the device has strong anti-interference ability and promotion and use values.