The invention discloses a wireless charging receiving end, a wireless charging transmitting end, a wireless charging system and an electric vehicle, and relates to the technical field of wireless charging. The receiving end control circuit can obtain the load information and confirm whether the load power changes in a large range according to the load information, and when the load power changes in a large range, the receiving end control circuit changes the duty ratio of the rectifying circuit, so that the inverter current of the transmitting end changes rapidly. The transmitting end control circuit can obtain the current of the inverter circuit and turn off the output of the inverter current when the change of the inverter current reaches a threshold value. The output overvoltage and the rectification current peak value during large-range power switching of the load are well suppressed, wireless communication is not needed, the dynamic performance of the system can be optimized, and the safety and the stability of the system are improved.
本申请公开一种无线充电的接收端、发射端、无线充电系统和电动汽车,涉及无线充电技术领域。接收端控制电路可以获取负载信息,并根据负载信息确认负载功率是否发生大范围变化,接收端控制电路在负载功率大范围变化时,改变整流电路的占空比,使发射端的逆变电流快速变化。发射端控制电路可以获取逆变电路的电流,并在逆变电流的变化达到阈值时关断逆变电流的输出。本申请对负载大范围功率切换时的输出过压与整流电流峰值有较好的抑制效果,且不需要无线通讯,可以优化系统动态性能,提升系统的安全性与稳定性。
Wireless charging receiving end, wireless charging transmitting end, wireless charging system and electric vehicle
无线充电的接收端、发射端、无线充电系统和电动汽车
2023-04-04
Patent
Elektronische Ressource
Chinesisch
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 / H02H EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS , Schutzschaltungsanordnungen / 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 |
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