An illustrative dual power inverter module includes a detection circuit configured to detect loss of low voltage DC electrical power supplied to a controller for a first power inverter and a second power inverter of a drive unit for an electric vehicle. A first backup power circuit is associated with the first power inverter and a second backup power circuit is associated with the second power inverter. Each backup power circuit is configured to convert high voltage DC electrical power to low voltage DC electrical power responsive to detection of loss of low voltage DC electrical power supplied to the controller. Three-phase short circuitry is configured to apply a same fault action to the first power inverter and the second power inverter responsive to detection of loss of low voltage DC electrical power supplied to the controller, wherein the same fault action includes applying equalized torque to each axle operatively coupled to the drive unit.

An on-board charging system for an electric vehicle comprising a generator (Dynamo) 1, coupled to the wheel of the electric vehicle. The generator produces a charging voltage which is connected to a 12 V battery, via voltage regular, the 12 V battery, and is connected to the input of a Power Boaster, which boasts the voltage from 12 V at the input to 48 V at the output. A Dual battery isolator is connected between the secondary Lithium battery and the Main lithium battery, that supply power to the a gear drive of the electric vehicle. When there is a drop in the voltage of the main lithium battery, during operation, the intelligent dual battery isolator triggers a release of the stored voltage from the secondary lithium battery pack to instantaneously charge up the main lithium battery, supplying power to the electric vehicle drive.

Provided is a highly reliable electronic control unit capable of improving responsiveness of an output current of a switching power supply to load current variation and suppressing power supply voltage variation accompanying the load current variation at low cost and with high power efficiency. Provided are: a calculation unit that performs signal processing; a first power supply circuit that supplies a first power supply voltage to the calculation unit; and a second power supply circuit that supplies a second power supply voltage to the first power supply circuit. The calculation unit has a function of outputting a control signal when a change in a consumed current of the calculation unit exceeds a predetermined threshold, and changes any one or both of a control scheme of the first power supply circuit and the second power supply voltage according to the control signal.

A charging device includes a passive auxiliary circuit and a rectifier which is connected downstream of the auxiliary circuit. The passive auxiliary circuit includes input nodes and output nodes. Between the input node and the output nodes, two impedances are connected. Here, an imaginary component of the first impedance has a positive non-zero value and an imaginary component of the second impedance a negative non-zero value or vice versa.

A propulsion system for an electric vehicle comprising a high voltage battery unit having a first high voltage battery connected in series with a second high voltage battery, which may also be referred to as a first and second battery bank, and one or more power inverters arranged to connect the battery banks to one or more electric machines. The one or more power inverters and the one or more electric machines are configured to form a first and a second three-phase system. The described architecture incorporating dual battery banks, and dual and/or multiphase inverters and electric machines can provide enhanced redundancy and limp home functionality in cases where a fault or error occurs in the inverter and/or in the electric machine so that a faulty three-phase system can be operated in a safe-state mode.

A vehicle power distribution circuit (14) for connecting between an energy store (2) and a power line (8) connected to a generator or DC/DC-Converter (9). The circuit (14) has a charging line (7) connecting between the energy store (2) and the power line (8) for charging the energy store (2) when a forward voltage is applied by the generator or DC/DC-Converter (9). A protection switch (6) is provided in the charging line (7) and is openable for preventing conduction of current through the protection switch (6) in response to a drop in voltage on the power line (8). An ideal diode arrangement (13) is provided in parallel to the protection switch (6) in the charging line (7) for conducting the forward current from the generator or DC/DC-Converter (9) to the energy store (2). The ideal diode arrangement (13) prevents the conducting of a reverse current when a reverse voltage is applied.

A drive device for an electrically drivable vehicle includes a housing body with a first fastening device, a cover which, after release of a second fastening device interacting with the first fastening device for fastening the cover to the housing body, is movable from a first position, in which the cover covers live components of the drive device during operation of the drive device, into a second position, in which the components are exposed, and a first connection device, to which a second connection device is connectable for establishing an electrically conductive connection and/or a data connection. The first fastening device and the first connection device are arranged such that in the first position access to the second fastening means in its position fastening the cover is only possible after the second connection device has been released from the first connection device.

A control system for a wireless power transfer (WPT) system includes current sampling modules, voltage sampling modules, a logic conversion circuit, and a controller area network (CAN) communication module that are all connected to a microprocessor module; the current sampling module is connected to the logic conversion circuit through a signal isolation circuit, the logic conversion circuit is connected to a pulse-width modulation (PWM) module, the PWM module is connected to an inverter circuit or a DC/DC converter, and the current sampling module and the voltage sampling module are connected to a primary side or a secondary side of the WPT system; transmitter coils on the primary side are spaced apart on the road, a receiver coil on the secondary side is disposed on a chassis of an electric vehicle, and the transmitter coil includes a double rectangular coil, a ferrite core surface, and a shielding aluminum plate.

The present application provides a method for managing charging in a battery swapping station. The method includes: receiving, by the first management unit, a wireless communication connection instruction transmitted by a management device of the battery swapping station, wherein the connection instruction includes a network location address of a second management unit of a battery pack; initiating, by the first management unit, a wireless communication connection to the second management unit based on the network location address; uploading, by the first management unit, battery status information of the battery pack acquired from the second management unit to the management device; and under a condition that the first management unit receives a charging instruction transmitted by the management device based on the battery status information, controlling, by the first management unit via an interaction with the second management unit and the charging unit, the charging unit to charge the battery pack.

To provide a contactor failure determination apparatus capable of appropriately determining failure of a contactor provided in a vehicle, a voltage sensor capable of detecting rising or dropping of a voltage of a second circuit including an external charger is provided. When an external charging request is made, a first control for closing each external charging contactor is executed, a second control for closing a pre-charge contactor is executed after execution of the first control, a third control for closing a second main contactor is executed after execution of the second control, and response to the voltage sensor detecting that the voltage of the second circuit has not risen after execution of the third control, it is determined that at least one of the external charging contactors has failed in an open state.