Rechargeable battery with USB charging function

A rechargeable battery with USB charging function comprising a battery body and a housing body disposed outside the battery body, wherein the rechargeable battery further comprises a circuit board connected with the battery body, a male USB connector connected with the circuit board and a battery cover detachably connected with the male USB connector,

• a cathode end of the battery body passes through the housing body and extends outside the housing body,
• one end of the circuit board is provided with an anode charging contact sheet, an anode discharging contact sheet and a ground contact sheet,
• both the anode charging contact sheet and the anode discharging contact sheet are connected with an anode of the battery body,
• the anode discharging contact sheet is located between the anode charging contact sheet and the ground contact sheet, and when the male USB connector is inserted into a female USB connector the anode charging contact sheet is connected with an anode pin of the male USB connector and the ground contact sheet is connected with a ground pin of the male USB connector;
• and
• the battery cover is provided with a conductive sheet which is electronically connected with the anode discharging contact sheet when the battery cover is connected with USB charging function,
• wherein the circuit board is provided with an over-charge protection circuit comprising a microcontroller unit and a first switch member connected with the microcontroller unit, the microcontroller unit is connected with the anode of the battery body for receiving a voltage signal of the anode of the battery body and outputs a control signal when the voltage signal of the anode of the battery body is greater than a set over-charge value, and the first switch member disconnects connection between the anode of the battery body and the anode charging contact sheet when receiving the voltage signal.