Patent ID: 9676286
Date: 2017-06-13
CPC Classifications: B60L,H02J,Y02T

Claim:
1. A device having a charging unit and being configured for inductive power transmission from the charging unit to a vehicle, wherein the charging unit comprises a primary coil and the vehicle comprises a secondary coil and in which the primary coil generates a magnetic transmission field in a transmission range between the primary coil and the secondary coil, wherein the vehicle comprises a sensor unit for temperature monitoring in the transmission range, the charging unit comprises a control unit, the transmission power being controlled by the control unit during a charging operation as a function of a result of said temperature monitoring, wherein the transmission power is maintained by the control unit at a first rate of power increase until an earlier of an expiration of a predetermined period of time and a detection of a critical object, wherein the transmission power is increased by the control unit to a second rate of power increase in response to the expiration of the predetermined critical period of time and no detection of the critical object, and wherein an object having thermal properties above a thermal resolution limit and spatial properties above a spatial resolution limit is designated as the critical object.