A magnetic inductive resonant charging circuit includes: a resonant network having an inductive secondary coil that converts a magnetic field received from an inductive primary coil into an alternating current (AC) signal; and a synchronous rectifier that rectifies the AC signal to generate a direct current (DC) signal for application to a load. A synchronous rectifier includes various configurations for shunting an AC waveform of an AC current source in the event of a fault. For example, when an over-voltage, over-current or over-temperature fault condition is detected, the rectifier controller may hold a pair of normally open switches of the rectifier open and hold a pair of normally closed switches of the rectifier on to shunt the AC current source. Configurations are provided for grounding capacitive electromagnetic interference generated in a chassis of an electric vehicle when a resonant network is unbalanced.
一种磁感应谐振充电电路包括:谐振网络,该谐振网络具有将从感应初级线圈接收的磁场转换为交流电(AC)信号的感应次级线圈;以及同步整流器,该同步整流器对AC信号进行整流以生成用于施加至负载的直流电(DC)信号。同步整流器包括用于在故障的情况下分流AC电流源的AC波形的各种配置。例如,当检测到过电压、过电流故障状况或过温故障状况时,整流器控制器可以保持整流器的一对常开开关断开并且保持整流器的一对常闭开关接通以分流AC电流源。提供了用于将在谐振网络不平衡时在电动车辆的底盘中产生的电容性电磁干扰接地的配置。
Safety circuit for wireless power transfer
用于无线电力传送的安全电路
2023-12-15
Patent
Electronic Resource
Chinese
IPC: | H02J CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER , Schaltungsanordnungen oder Systeme für die Abgabe oder Verteilung elektrischer Leistung / B60L PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES , Antrieb von elektrisch angetriebenen Fahrzeugen / H02M APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS , Anlagen zur Umformung von Wechselstrom in Wechselstrom, von Wechselstrom in Gleichstrom oder umgekehrt, oder von Gleichstrom in Gleichstrom und zur Verwendung in Netzen oder ähnlichen Stromversorgungssystemen |
European Patent Office | 2023
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