A receive end and a transmit end of a wireless charging system, a method, an electrical terminal, and the system are disclosed. The receive end includes a receive coil, a receive end compensation circuit, a rectifier, and a controller. The controller adjusts a phase difference between a first bridge arm and a second bridge arm of the rectifier, and adjusts a phase-shift angle between a bridge arm voltage of the rectifier and a fundamental component of an input current of the rectifier, so that zero-voltage switching is implemented for controllable switching transistors of the rectifier. An amplitude of a fundamental component of the bridge arm voltage is adjusted by adjusting the phase difference between the two bridge arms of the rectifier, so that a real part of an equivalent impedance of the rectifier is adjusted. The equivalent impedance of the rectifier includes the real part and an imaginary part. The real part is a resistance, and the imaginary part is a reactance. When the imaginary part of the equivalent impedance of the rectifier is quite small, the equivalent impedance of the rectifier may be considered as a purely resistive impedance, and a ZVS effect can be achieved for the controllable switching transistors. An inductance compensation module may weaken a capacitive part of the equivalent impedance, and reduce reactive power of the wireless charging system, thereby improving system efficiency of the wireless charging system.
RECEIVING END AND TRANSMITTING END FOR WIRELESS CHARGING SYSTEM, METHOD, ELECTRICAL TERMINAL, AND WIRELESS CHARGING SYSTEM
EMPFANGSENDE UND SENDEENDE FÜR DRAHTLOSES LADESYSTEM, VERFAHREN, ELEKTRISCHES ENDGERÄT UND DRAHTLOSES LADESYSTEM
EXTRÉMITÉ DE RÉCEPTION ET EXTRÉMITÉ DE TRANSMISSION POUR SYSTÈME DE CHARGE SANS FIL, PROCÉDÉ, TERMINAL ÉLECTRIQUE ET SYSTÈME DE CHARGE SANS FIL
2021-10-27
Patent
Electronic Resource
English
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
|European Patent Office | 2024
|TRANSMITTING END AND RECEIVING END FOR WIRELESS CHARGING, AND WIRELESS CHARGING SYSTEM
European Patent Office | 2023
|RECEIVING END AND TRANSMITTING END OF WIRELESS CHARGING SYSTEM AND WIRELESS CHARGING SYSTEM
European Patent Office | 2022
|TRANSMITTING END AND RECEIVING END FOR WIRELESS CHARGING, AND WIRELESS CHARGING SYSTEM
European Patent Office | 2024
|