1. A method for detecting a state of an overcurrent protector for a battery, comprising:
acquiring a voltage Uout out of a power supply and a voltage Ubat of a battery connected to the power supply via an overcurrent protector, and calculating U, wherein U=|Uout?Ubat|;
when UL?U?UH and |Ibat|?Imin and adjusting the voltage of the power supply to be U?out, wherein UL is a minimum value of a difference between the voltage of the power supply and the voltage of the battery, UH is a maximum value of the difference between the voltage of the power supply and the voltage of the battery, Ibat is a current of the battery, and Imin is a current detecting precision of an equipment for detecting the current of the battery;
acquiring the voltage of the battery U?bat after adjusting the voltage of the power supply, and calculating U?, wherein U?=|U?out?U?bat|; and
determining a state of the overcurrent protector for the battery.