Elevator brake control circuit, elevator and control method

The invention discloses an elevator brake control circuit, an elevator and a control method.The elevator brake control circuit comprises a rectification module, a band-type brake converter, an elevator brake, a mains supply detection module, a relay, a bidirectional converter, a battery, a DC-DC module and a position detection module; when the commercial power is abnormal, the electric energy of the battery is supplied to the elevator brake after passing through the bidirectional converter, so that the commercial power supply and the battery power supply are integrated, the bidirectional converter is multiplexed for charging and discharging of the battery, an independent charger does not need to be arranged for the battery, the circuit structure is simplified, and the cost is reduced; and on the other hand, whether the commercial power is normal or not and whether the lift car is flat or not are detected to automatically control brake contracting and brake loosening of the elevator brake, manual brake looseni