Abstract: A planar spiral induction coil includes a strip-shaped coil having at least one turn. The at least one turn has a width that changes as a distance from a beginning of the strip-shaped coil increases in a length direction of the strip-shaped coil. Each turn of the at least one turn has a respective width that causes an equal current to flow through each turn of the at least one turn.

Abstract: An information transmission system is provided with a transmission coil and a reception coil respectively provided along a first surface and a second surface that face each other proximal to each other. The transmission coil and reception coil are provided proximally to be electromagnetically coupled to each other. The winding wire of the transmission coil is wound on the first surface, and the winding wire of the reception coil is wound on the second surface. The information transmission system is provided with a magnetic body provided proximately so as to be electromagnetically coupled to the transmission coil and the reception coil to cover at least one part of a region in which at least the winding wires of the transmission coil and reception coil are present between the first surface and the second surface.

Abstract: A battery assembly mounted on a hybrid electric vehicle is provided that prevents thermal runaway caused by overcharging. The battery assembly includes a battery having a plurality of cells and a protection switch disposed opposite to the battery. A relay is configured to turn on or off according to an operation of the protection switch and a PRA (power relay assembly) is connected between the relay and the battery.

Abstract: In one embodiment, a brownout recovery circuit configured for a switch power supply circuit with a first switch, can include: (i) an under-voltage detection circuit that activates a detection signal when a bootstrap capacitor is not in an under-voltage state, and deactivates the detection signal when the bootstrap capacitor is in the under-voltage state; (ii) a logic circuit that generates a first control signal according to a main control signal from the switch power supply circuit and a second switch state; (iii) a first control circuit that generates a first switch signal according to the detection signal, and controls the first switch thereby; and (iv) a second control circuit that receives the first control signal, and generates a second switch signal to control the second switch thereby.

Abstract: A server includes a chassis having a base and a cover, a switch mounted on the chassis, and a motherboard. The motherboard includes a control circuit and a power-on pin. The control circuit includes a switch unit, and the switch unit includes a first buffer, a switch chip and a jumper. When the cover is detached from the base, the switch outputs a first signal to the first buffer, and the first buffer outputs the first signal to the switch chip. The switch chip outputs the first signal to the power-on pin, and the server is powered off. When the base is covered by the cover, the switch outputs a third signal to the first buffer and the first buffer outputs the third signal to the switch chip. The switch chip outputs the third signal to the power-on pin, and the server is powered on.

Abstract: A system for determining a cabin layout in a cabin of a vehicle, includes a system for contactless transfer of power with primary magnetic elements and secondary magnetic elements that each overlap with at least one primary magnetic element. Based on sequentially providing power to primary magnetic elements and measuring at least one electric value in the powered primary magnetic element overlapping states of secondary magnetic elements and primary magnetic elements can be determined. By determining overlapping states for all primary magnetic elements in the cabin the number and positions of all secondary magnetic elements and all vehicle components attached thereto can be collected. The system avoids powering two contiguous primary magnetic elements to prevent a wrong determination of an overlapping state.

Abstract: Apparatus and methods are provided to automatically detect and control a load switch for a wireless power receiver. In one novel aspect, a method is provided to adaptively control the load switch based on the output condition of a rectified output according to a predefined criteria. In one embodiment of the invention, the methods to adaptively control the load switch comprises a first stage that turns on the load switch quickly; a second stage that stops turning on the load switch and holds the load switch at its current value; a third stage that slowly pulls down the load switch; and a fourth stage that quickly turns off the load switch. In another embodiment, an integrated circuit for a wireless power pick up unit is provided to control the load switch adaptively based on a rectified output feedback and a predefined criteria.

Abstract: Power transfer systems including a direct current source and a plurality of outputs operable in several modes. A ground mode may couple an output to circuit ground and a current mode may couple the output to the direct current source. The power transfer system may also include a controller configured to iteratively select a pair of outputs from the plurality of outputs. Once a pair is selected, the controller may set a first output of the pair of outputs to the current mode and the second to ground mode for a determined duration. After the duration has passed, the controller may set the first output to the ground mode and the second output to the current mode for the same duration. Thereafter the controller may select another pair of outputs.

Abstract: A circuit for ensuring ultra-low power relay switching to control an AC load and extend a battery's lifetime. A control circuit may be designed to work where power is provided at very low duty cycles in that the on-time of applied voltage is quite short compared to its off-time. During the on-time, power such as that from a battery may be consumed to drive the circuit but overall such consumption of power is almost miniscule, for instance, a few microamperes or less from a three volt battery. An input FET may drive a pair of switching FETs that provide pulses to a transformer which provides a ramp of voltage that remains above zero volts to a pair of AC switch FETs. An output of the AC switch may go to operate relays of a wire saver for operating one or more thermostats.

Abstract: A power supply unit for use with thermostats or other like devices. The power supply unit may keep electromagnetic interference emissions and harmonics at a minimum. A unit may have enough power for triggering a switch at about a cross over point of a waveform of input power to the unit. Power for triggering may come from a storage source. Power for the storage source may be provided with power stealing which require switching transistors which can generate emissions. In-line thermostats using MOSFETS power steal may do the power steal during an ON state (triac, relay or silicon controlled rectifier activated). Gate signals to the transistors may be especially shaped to keep emissions from transistor switching at a minimum. All that may be needed, during an OFF state as a bypass, is a high voltage controllable switch. The need may be achieved using high voltage MOSFETS.

Abstract: A wireless power transmission system, and an apparatus and method for controlling power in the wireless power transmission system are provided. The method includes determining a resonance frequency of the wireless power transmission system in which a wireless power transmission efficiency is greater than or equal to a predetermined value. The method further includes generating an operation power based on the wireless power transmission efficiency, the operation power being used to operate a target device. The method further includes transmitting the operation power to the target device. The method further includes controlling an amount of the operation power received by the target device to be within a predetermined range.

Abstract: A remote energy transfer system is provided that is capable of wirelessly transmitting data and power through barriers. Generally, the remote energy transfer system comprises at least one power antenna, at least one data antenna, and at least one link controller operatively coupled to the power antenna and the data antenna. The link controller can be configured to at least partially control the energy transfer from the power antenna and the data transfer of the data antenna.

Abstract: A power distribution system has a plurality of reactive power resources including capacitor banks and distributed energy resources connected to branches of the power distribution system. Power loss is reduced in the distribution system by determining discrete switch states for the capacitor banks and continuous set points for the distributed energy resources, so that the reactive power provided by the reactive power resources reduces power loss while optionally correcting voltage violations in the power distribution system when the capacitor banks are set in accordance with the respective discrete switch states and the distributed energy resources are operated at the respective continuous set points. The range of values for the continuous set points is constrained based on maximum and minimum reactive power limits for each distributed energy resource under consideration.

Abstract: A power supply unit for use with thermostats or other like devices requiring power. A power supply unit may be designed to keep electromagnetic interference emissions at a minimum, particularly at a level that does not violate governmental regulations. A unit may be designed so that there is enough power for a triggering a switch at about a cross over point of a waveform of input power to the unit. Power for triggering may come from a storage source rather than line power to reduce emissions on the power line. Power for the storage source may be provided with power stealing. Power stealing may require switching transistors which can generate emissions. Gate signals to the transistors may be especially shaped to keep emissions from transistor switching at a minimum.

Abstract: An electric unit is attached to a power unit including a motor-generator, the power unit being disposed in a power unit mounting chamber that is formed at a front of a vehicle and separated from a vehicle cabin by a partition wall. The electric unit includes: a high-voltage component including an electric power conversion device of a relatively high voltage, the electric power conversion device converting an electric power between a DC electric power and an AC electric power for the motor-generator; and a low-voltage component including a control device of a relatively low voltage, the control device controlling the electric power conversion device. The high-voltage component and the low-voltage component are accommodated in an accommodation case. Inside the accommodation case, the high-voltage component is arranged toward the front of the vehicle, and the low-voltage component is arranged toward a rear of the vehicle.

Abstract: A vehicle switch module includes a sub-network having switches connected thereto and a sub-network controller in operative communication with the sub-network and the switches. Each switch includes a microprocessor programmed to generate switch messages that include address and switch logic state data. The sub-network controller transmits switch queries onto the sub-network to a number of switch addresses to determine a connection status and switch state of switches in the switch module and receives switch messages responsive to the queries from switches at addresses to which the switch queries were transmitted. The received switch messages verify the identity of a switch in the module and provide a switch state for the switch. The sub-network controller interprets the received switch messages and—based on the switch address and switch state data in the messages—controls operation of a vehicle output or load associated with each of the switches.

Abstract: Provided is a wire harness which does not increase in size with increase in number of electronic devices controlled by an electronic control unit and can standardize a relay connector, and an electronic device control system including such wire harness. A wire harness structure (2) communicably-connects electronic devices (3) mounted on a vehicle to an electronic control unit (4) controlling the electronic devices, and includes a relay connector (6, 6A, 6B) relaying a control signal from the electronic control unit to the electronic devices, a power wire (81) and a ground wire (82) drawn out from the relay connector, power supply units connected to the power wire and the ground wire, and sets of signal wires (83a, 83b, 83c) transmitting the control signal to each power supply unit arranged to supply power to the electronic device and drive the electronic device according to the control signal from the signal wire.

Abstract: An electric power transmission apparatus for a vehicle includes: a radio receiver that is capable of receiving a radio wave of a predetermined frequency transmitted from outside of the vehicle, and that is capable of executing a search operation of searching for the radio wave by shifting reception frequency from a current reception frequency at a predetermined shift speed, and stopping shifting of the reception frequency when a radio wave is received at or above a predetermined receiving intensity; and an on-vehicle device that interrupts transmission of the electric power to a mobile device performed by an electric power transmitter while the radio receiver is executing the search operation.

Abstract: A smart power outlet system for a vehicle has a power outlet control module and a plurality of power outlets. Each power outlet has an associated set of power switching devices with each power switching device of a set of power switching devices coupled to a different power source. The power outlet control module drives a display and is responsive to user input via the display. The power outlet control module energizes one of the power switching devices in each set of power switching devices corresponding to a power source selected by a user via the display to provide power to the power outlet associated with that set of power switching devices from the power source selected by the user.

Abstract: In a PoE system in an automobile, Power Source Equipment (PSE) is connected to Powered Devices (PDs) to provide data and power via Ethernet wires. When the ignition switch is on, the full PSE voltage, such as 44 volts, is supplied to the PDs, and the voltage is regulated by the PDs to power one or more loads in the PD. During a standby mode, such as when the ignition switch is off, the PSE is controlled to output a lower voltage of, for example, 5 volts, and the voltage is regulated by the PDs to power the loads, such as processors, in a low power standby mode. The voltage regulator in the PD for the low power mode may be an efficient linear regulator, and the voltage regulator in the PD for the full voltage mode may be a switching regulator. Thus, there is improved efficiency.