About 59 results
https://drivepatents.com/patents/1389993 · 10 Jun 2026
A pre-charge sequence for a flying capacitor converter of a wireless power system is disclosed. An example method includes determining that a ground assembly of the system is connected to an electric grid and is not receiving power. The ground assembly com...
https://drivepatents.com/patents/938025 · 7 Sep 2016
The invention relates to a contactless power supply device (1) for a load (23), the device comprising a primary circuit (10) comprising: a primary coil (11) arranged to transfer energy by induction to a secondary coil (21) connected to the load (23), a pri...
https://drivepatents.com/patents/939789 · 3 Aug 2016
Provided is a wireless power transmission device that detects an abnormality of, for example, a secondary coil and a rectifier unit independently of wireless communication and can quickly shift to a safe operation. This device comprises: a ground-side coil...
https://drivepatents.com/patents/940443 · 20 Jul 2016
A wireless power receiving device for receiving power wirelessly is configured to include a resonant circuit including a power receiving coil and a resonant capacitor for receiving power from a power feeding coil; and a phase adjustment circuit that is pro...
https://drivepatents.com/patents/942574 · 1 Jun 2016
The power transmission system (A) includes a power transmitting device (10) that transmits AC power and a power receiving device (20) that receives the AC power. The power receiving device (20) includes a rectifier (22) that converts the received AC power ...
https://drivepatents.com/patents/943400 · 11 May 2016
Power feed device (100) supplies power to storage battery (152) mounted on vehicle (150), through power receiving unit (154) of vehicle (150). Power supply unit (104) performs preliminary supply to power receiving unit (154) while sequentially changing a f...
https://drivepatents.com/patents/945626 · 23 Mar 2016
A wireless power-supplying system (1) includes a power-supplying coil (15) disposed on a ground contact surface side, a power-receiving coil (21) mounted on a movable body and to which power is wirelessly supplied from the power-supplying coil (15), a cove...
https://drivepatents.com/patents/953033 · 2 Mar 2016
Provided is a contactless power supplying system which is efficient and can be built of small coils by appropriately limiting power to be inputted into a transmitting coil. In the contactless power supplying system, power transmitted from a transmitting co...
https://drivepatents.com/patents/953636 · 17 Feb 2016
To minimize excessively high output or increases in magnetic-flux leakage by controlling power feeding on the power-feeding side if an unforeseen situation occurs. This power-feeding device (100) feeds power to an external power-receiving device (150) in a...
https://drivepatents.com/patents/953623 · 17 Feb 2016
In this non-contact power supply system that, by means of at least a magnetic coupling, supplies power in a non-contact manner between a power transmission coil (11) provided to a power supply device (1) and a power reception coil (21) provided to a vehicl...