The invention relates to a circuit device (100) for reducing common-mode interference of a power converter (60), the power converter (60) forming a common-mode interference source during operation. The circuit device (100) comprises at least one short-circuited additional line (50), which can be coupled to an input (10, 15) and an output (20, 25, 30) of the power converter (60). The additional line (50) conducts the interference currents produced by the common-mode interference source and returns said interference currents to the common-mode interference source.

The power receiving connector to be placed as a vehicle-mounted feeding port is formed by integrating connection terminals, internal wirings, wiring branch parts, a ground wire side branch line, a control wire side branch line, capacitors, a superposition separation element, and a low-pass filter with a housing as a replaceable unit.

Provided is a method for designing a current supply device for wirelessly supplying power to a vehicle having a current collection device. In the design method, the gap between the two adjacent magnetic poles of the current supply device is received as input and then the gap between the current supply device and the current collection device is determined based on the gap between the two magnetic poles. Next, the magnitude of the power to be supplied to the current supply device is determined based on the value required with respect to the magnitude of the magnetic field and the gap between the current supply device and the current collection device. According to the design method, current supply device can easily be designed since various functional requirements are decoupled from each other.

The present application relates to the detection of moving vehicles and other objects, in particular though not exclusively for the application of switching stationary charging pads for moving electric vehicle charging. There is provided an electric vehicle detecting apparatus for switching a charging pad for charging a vehicle transmitting a locating signal, the apparatus comprising two sensors separated in the direction of travel of the vehicle, and a detector arranged to detect the vehicle by comparing the locating signals received by each of the two sensors.

A battery management unit includes a plurality of monitoring IC chips each configured to detect at least one operating parameter of at least one battery cell or battery module, which has a predetermined number of battery cells and is connected to a first bus. The battery management unit further includes a control unit and a basis monitoring IC chip which is likewise connected to the first bus and is configured to communicate with each of the monitoring IC chips via the first bus. The basis monitoring IC chip and the control unit are connected to a second bus and are configured to communicate with each other via the second bus. The basis monitoring IC chip and the control unit are arranged on a common circuit board.

An output circuit sends a control pilot signal generated in a voltage generator to an input circuit. A communication unit is connected between an earthed wire and a control pilot wire on the output side of the output circuit via a bandpass filter. A communication unit is connected between the earthed wire and the control pilot wire on the input side of the input circuit via a bandpass filter. A low-pass filter is interposed between the output circuit and the communication unit. A low-pass filter is interposed between the input circuit and the communication unit.

A vehicle capable of being externally charged, in which a vehicle-mounted power storage device is charged using electric power supplied from a charging cable external to the vehicle, an ECU executes a smart verification process for communicating with an electronic key located within a prescribed verification range and verifying whether the electronic key is an authorized user's key or not, when it is detected that a user has operated a switch for locking the charging cable. When smart verification is impossible, the ECU executes a noise suppression process caused by external charging, and executes the smart verification process during the noise suppression process. When it is determined by the smart verification process during the noise suppression process that smart verification is possible, the ECU switches a state of a lock mechanism of the charging cable.

A contactless power supply device that supplies electric power to a vehicle in a contactless manner, includes: a power transmission resonance circuit; a power source circuit supplying direct-current power; and a power transmission circuit converting the direct-current power of the power source circuit into alternating-current power and supplying alternating-current power to the power transmission resonance circuit. The power transmission circuit includes: an inverter circuit converting the direct-current power of the power source circuit into alternating-current power; and a power transmission-side immittance conversion circuit adjusting the alternating-current power of the inverter circuit and supplies the adjusted alternating-current power to the power transmission resonance circuit. The ratio of a characteristic impedance of the power transmission-side immittance conversion circuit to an impedance backward on the power transmission resonance circuit side from the power transmission-side immittance conversion circuit is adjusted such that harmonic components in the alternating-current power of the inverter circuit becomes lessened.

A converter module is provided with a first power delivery circuit, a second power delivery circuit, and a controller. The first power delivery circuit supplies current from a first direct current (DC) source to a resonant stage in a first direction. The first power delivery circuit comprises at least two first switches. The second power delivery circuit supplies the current from the first DC source to the resonant stage in a second direction, opposite the first direction. The controller includes memory, and a processor that is programmed to: enable the first power delivery circuit and the second power delivery circuit alternately to provide power as a periodic waveform to the resonant stage; and disable the at least two first switches individually in a sequence to generate a phase shift in the periodic waveform and to disable the first power delivery circuit.

In at least one embodiment, a vehicle battery charger is provided. At least one transformer includes a first winding and a second winding on a primary side of the transformer that are connected to one another to form a middle point. The middle point of the at least one transformer receives an input voltage signal from a mains supply. A half-bridge rectifier receives the input voltage signal from the mains supply to enable the middle point of the least one transformer to receive the input voltage signal from the mains supply. A first active bridge includes a first plurality of switching devices to receive a first input signal directly from the first winding and to receive a second input signal directly from the second winding. The first input signal and the second input signal are out of phase with one another to minimize electromagnetic interference within the vehicle battery charger.