Abstract: A power management system and a power management method for wireless power supply are provided. The power management system includes a first electric auxiliary vehicle, a second electric auxiliary vehicle, a management device and a wireless charging platform. When the first electric auxiliary vehicle is located within a wireless charging range of the wireless charging platform, the wireless charging platform generates a password and provides the password and a user identification code of the first electric auxiliary vehicle to the management device. The first electric auxiliary vehicle communicates with the management device according to the user identification code to receive the password from the management device and displays the password, and activates a wireless power supply function according to a verification operation of the password and the user identification code, thereby providing power to the second electric auxiliary vehicle by a wireless power supply manner.

Abstract: A wireless charging system and an operating method for the wireless charging system are provided. The wireless charging system includes a power supply device, a first transmission coil, a second transmission coil, an electric auxiliary vehicle, and a processing device. The power supply device provides a power source. The first transmission coil transmits a first wireless electric energy to a first parking position and a second parking position in a wireless transmission manner according to the power source. The electric auxiliary vehicle includes a vehicle coil circuit. The processing device guides the electric auxiliary vehicle to stop at the second parking position. The processing device uses the vehicle coil circuit to transmit a coupled electric energy to the second transmission coil, so that the second transmission coil uses the coupled electric energy to transmit a second wireless electric energy to the third parking position in the wireless transmission manner.

Abstract: Disclosed is a power management system for a wireless power supply. The power management system includes multiple control devices, a wireless charging platform, and a remote monitoring device. The control devices are respectively disposed on one of multiple electric auxiliary vehicles. The wireless charging platform wirelessly charges at least one of the electric auxiliary vehicles. The remote monitoring device wirelessly communicates with the wireless charging platform to control a power supply behavior of the wireless charging platform. A first control device among the control devices is disposed on a first electric auxiliary vehicle among the electric auxiliary vehicles. The wireless charging platform wirelessly powers the first electric auxiliary vehicle in response to a first command. The wireless charging platform wirelessly powers at least one of the other electric auxiliary vehicles by using a battery power of the first electric auxiliary vehicle in response to a second command.

Abstract: Disclosed is a power management circuit for an electric auxiliary vehicle. The electric auxiliary vehicle includes a battery, a motor, and a power receiving terminal. The power management circuit includes a transformer, a primary circuit, first and second power transmission circuits, and a controller. The transformer includes primary and secondary windings. The primary circuit is connected to the primary winding and the power receiving terminal. The first power transmission circuit is connected to the secondary winding and the battery. The second power transmission circuit is connected to the secondary winding, battery, and motor. The controller controls the primary circuit and the first power transmission circuit to provide battery power of the battery to the power receiving terminal in a first operating mode. The controller controls the second power transmission circuit in a second operating mode, so that the second power transmission circuit uses power of motor to charge the battery.

Abstract: Disclosed are a wireless power supply system and an operating method for a wireless power supply system. The wireless power supply system includes a charging device and a plurality of electric auxiliary vehicles. The charging device includes a device converter and a device induction coil. A first electric auxiliary vehicle among the electric auxiliary vehicles provides a wireless vehicle power to the device induction coil in a first operating mode. The charging device provides the wireless vehicle power to at least one electric auxiliary vehicle other than the first electric auxiliary vehicle in the first operating mode.

Abstract: A motor driving device includes a battery module and a conversion circuit. The conversion circuit drives a motor in a driving mode and charges the battery module in a charging mode. The conversion circuit includes a determination circuit, a controller, and a first phase upper arm switch circuit. The first phase upper arm switch circuit includes a power switch and a transistor. First terminals, second terminal, and control terminals of both the power switch and the transistor are respectively coupled to a positive power supply terminal of the battery module, a first phase node, and the controller. In the charging mode, when a first phase voltage value located at the first phase node is greater than a battery voltage value located at the positive power supply terminal, the determination circuit notifies the controller to turn on the transistor.

Abstract: A wireless charging system is provided. The wireless charging system includes a wireless power supply platform, a first device, and a second device. The wireless power supply platform provides a wireless suppling power. The first device includes a first power receiving circuit, a first power switch, and a first control circuit. The second device includes a second power receiving circuit, a second power switch, and a second control circuit. The second control circuit communicates with the first control circuit to determine a coordinated switching state of the first power switch and the second power switch. The coordinated switching state determines a first output voltage value generated by the first power receiving circuit according to the wireless suppling power and a second output voltage value generated by the second power receiving circuit according to the wireless suppling power.

Abstract: A driving device and a driving method for driving a motor of an electric auxiliary vehicle are provided. The driving device includes a battery module, a transducer, a control circuit. The battery module stores a driving power. When an acceleration command is received, the control circuit controls the transducer to enter a first mode. In the first mode, the transducer provides the driving power to the motor. When a brake command is received, the control circuit controls the transducer to enter a second mode. In the second mode, the transducer provides an inductive power generated by the motor to the battery module. When the acceleration and brake commands are not received and a user does not apply an acceleration force to the electric auxiliary vehicle, the control circuit controls the transducer to enter a third mode. In the third mode, the transducer provides the inductive power to the battery module.

Abstract: A driving system for an elevator. The driving system includes a motor, a power source, a battery device, a conversion circuit, a power path circuit and a controller. The motor controls a movement of the elevator in response to a driving power. The power source provides a source power. The battery device stores a battery power. When the elevator is moving, the controller controls the power path circuit to generate a power delivering path between the conversion circuit and the motor, and controls the conversion circuit to convert the battery power into the driving power. When the elevator is at rest, the controller controls the power path circuit to generate a charging path between the conversion circuit and the power source, and controls the conversion circuit to convert the source power into the battery power.