Open-circuit follow current device of storage battery pack

The utility model discloses an open-circuit follow current device for a storage battery pack. In the open-circuit follow current device, two ends of a storage battery are respectively connected with a diode VD in parallel; two ends of the storage battery are connected in parallel with the diode VT through the switch K; the charger is connected with the storage battery pack and the load; the detection module is used for detecting a voltage signal of the storage battery and a current signal of the storage battery pack and transmitting to the control module; the control module controls the on-off of the switch K through the driving module; the control module also transmits the received signal data to an upper computer. According to the utility model, the charging current and the single battery voltage are detected simultaneously, and the accuracy of battery open circuit discrimination is improved; the data is processed through the control module, and the switch is driven to act through the driving module; the di