Abstract: The charging and discharging circuit includes a filtering circuit, a driving circuit, and a generator circuit. The generator circuit includes a transformer module. An input of the filtering circuit is configured to receive an input voltage, and an output of the filtering circuit is connected to the driving circuit. The driving circuit and the generator circuit include multiple bridge arms, and each of the multiple bridge arms is connected in parallel. The transformer circuit is connected to bridge arms of the generator circuit and is connected to one of bridge arms of the driving circuit. The charging and discharging circuit has a charging state and a discharging state. When the charging and discharging circuit is in the charging state, the driving circuit forms a power factor correction circuit, and the generator circuit forms a resonance circuit.

Abstract: A device for detecting electric leakage, includes: a detection assembly connected to a first phase discharge path, a second phase discharge path, and a sampling assembly which is connected to a signal processing circuit. The first and the second phase discharge paths are configured to connect to a power supply and transmit electricity from the power supply when the power supply discharges electricity. The detection assembly is configured to establish the detection loop when the power supply discharges electricity. The sampling assembly is configured to collect, from the detection loop, a first detected voltage of the first phase discharge path and a second detected voltage of the second phase discharge path. The signal processing circuit is configured to receive the first and the second detected voltages from the sampling assembly, and determine whether the power supply has electric leakage according to the first and the second detected voltages.

Abstract: A power drive circuit, includes: a battery pack, a first switch, a voltage adjustment circuit, a first bridge-arm conversion circuit, and a second bridge-arm conversion circuit. A first end of the voltage adjustment circuit is connected to a first end of the battery pack, and a second end of the voltage adjustment circuit is connected to a second end of the battery pack. The first switch is connected to the first end of the battery pack and a third end of the voltage adjustment circuit, and the first bridge-arm conversion circuit and the second bridge-arm conversion circuit are connected in parallel between the second end and the third end of the voltage adjustment circuit. The first bridge-arm conversion circuit is configured to connect to a first electric motor of a vehicle, and the second bridge-arm conversion circuit is configured to connect to a second electric motor of the vehicle.

Abstract: An energy conversion apparatus includes: a first inductor, a first end of the first inductor being connected to a first output end of a battery module; a second inductor, a first end of the second inductor being connected to the first end of the first inductor; a second switch, connected between the first end of the second inductor and a first end of a charging and discharging port; a first two-way H-bridge, one end of the first two-way H-bridge being connected to a second output end of the battery module and a second end of the charging and discharging port, the first two-way H-bridge including a first bridge arm and a second bridge arm that are connected in parallel; and a third switch, connected between the first end of the first inductor and the first end of the charging and discharging port.

Abstract: A contactor includes: a terminal group including a first terminal and a second terminal; a conductive strip including a first conduction section and a second conduction section that are movably connected, where the first conduction section is connected to the first terminal; a microswitch connected to the second conduction section, where at least two microswitches, at least two conductive strips, and at least two terminal groups are arranged and in a one-to-one correspondence; and a driving component configured to drive the at least two microswitches to rotate for driving to implement selective disconnection or connection between corresponding second conduction sections and second terminals. The present disclosure also discloses a charging and distribution system, a vehicle, and a charging pile. The contactor can implement synchronous on-off of multiple high-voltage circuits, and reduce the number of parts of the driving component.

Abstract: A distributor includes: an outer housing; a direct current charging interface, an electronic control terminal interface, and a battery terminal interface disposed in the outer housing. A first contactor and a second contactor are connected between the electronic control terminal interface and the battery terminal interface. A third contactor and a pre-charge resistor form a pre-charge branch. A fourth contactor is connected between the direct current charging interface and the battery terminal interface; a fifth contactor is connected between a negative terminal of the direct current charging interface and a negative terminal of the battery terminal interface; and the five contactors and a pre-charge resistor are disposed in the outer housing.

Abstract: A battery energy processing device includes: first and second inductors, first and second phase bridge arms, an energy storage element, and a controller. First ends of the first and second inductors are connected with a positive electrode of a battery. A midpoint of the first phase bridge arm is connected with a second end of the first inductor; A midpoint of the second phase bridge arm is connected with a second end of the second inductor. A first end of the energy storage element is connected with a first confluent end; a second end of the energy storage element is connected with a second confluent end. The controller is configured to control the first and second phase bridge arms to charge and discharge the battery through the first and second inductors to heat the battery. The first and second inductors are in different operating states.