Wireless Battery Charging System Having Emergency Shutdown For A Traction Battery Of An Electric Vehicle

摘要

A vehicle-side, electronic charging device of a wireless battery charging system receives, converts and feeds energy into a rechargeable traction battery of an electric vehicle traction motor. The traction battery is charged by an external charging system via a wireless link and the vehicle-side charging device. The vehicle-side charging device includes a first LC resonant circuit between first and second output ports, and a current rectifier having first and second AC voltage inputs and first and second DC voltage outputs. Either (i) the first and second DC voltage outputs of the current rectifier, or (ii) the first and second AC voltage inputs of the current rectifier, or (iii) the first and the second output ports of the first LC resonant circuit, or (iv) a first and a second connection of the reception coil are switchably connected to one another via an actuable kill switch.

主权项

1. A vehicle-side, electronic charging system device of a wireless battery charging system, the vehicle-side, electronic charging system device being configured to receive, convert, and feed energy to a rechargeable traction battery for supplying electrical energy to an electric traction motor of an electric vehicle, wherein the traction battery is configured to be charged by an external charging system device via a wireless link and the vehicle-side charging system device, and wherein the vehicle-side charging system device comprises:
a first LC resonant circuit comprising:
a first coil in the form of a reception coil configured to receive electromagnetic energy and having a first connection and a second connection,a first capacitor,a first output port, anda second output port,wherein the first output port is electrically conductively connected to the second output port via the first capacitor and the first coil, and a current rectifier having a first AC voltage input and a second AC voltage input on an input side of the current rectifier, and a first DC voltage output and a second DC voltage output on an output side of the current rectifier, wherein the current rectifier is designed to convert an AC electric voltage applied between the first and second AC voltage inputs into a DC electric voltage which between the first and second DC voltage outputs, wherein the first AC voltage input is directly or indirectly electrically conductively connectable to the first capacitor via the first output port, and the second AC voltage input is directly or indirectly electrically conductively connectable to the first coil via the second output port, wherein the first DC voltage output is directly or indirectly electrically conductively connectable to a first port of the traction battery, and the second DC voltage output is directly or indirectly electrically conductively connectable to a second port of the traction battery, and wherein at least one of the following pairs of elements are electrically conductively connectable switchably to one another via an actuable switch of a kill switch:
(i) the first and second DC voltage outputs of the current rectifier,(ii) the first and second AC voltage inputs of the current rectifier,(iii) the first and the second output ports of the first LC resonant circuit, or(iv) the first and the second connections of the first coil.