Current type wireless electric energy transmission system with double receiving coils

Abstract

The invention discloses a current type wireless electric energy transmission system with double receiving coils. The system comprises a wireless transmitting module, a wireless receiving module and a switch control signal generating circuit. The wireless receiving module comprises two receiving units. The receiving unit comprises a receiving coil, an MOS tube and a rectifier diode. The switch control signal generating circuit controls the two MOS tubes to be switched on and off periodically, and the two receiving coils provide constant current for the load. By adjusting the opening and closing time sequence of the two MOS tubes, the two receiving units work in a synchronous mode or in an asynchronous mode. In the synchronous mode, the output currents of the two receiving coils are superposed, so that the value of the current passing through the load is higher; in the asynchronous mode, the output time of the two receiving coils is superposed, so that the current passing through the load is more stable. In addition, the system can be adjusted to work in a synchronous mode or an asynchronous mode by switching the switch control signal generating circuit.

Description

technical field [0001] The invention belongs to the technical field of wireless power transmission, and in particular relates to an optimization method for current-type wireless power transmission with double receiving coils. Background technique [0002] At present, the mature magnetic coupling resonant wireless power transmission technology transmits energy through magnetic coupling between coils. For wireless power supply application scenarios where the receiving voltage is low due to large transmission distance or light load conditions, the transmission efficiency of the traditional voltage-type resonant system often fails to meet the requirements, while the current-type resonant wireless power supply system with a single receiving coil Conversion efficiency also has its limits, so the receiving system needs to be optimized, using dual receiving coils for optimization to improve energy transmission efficiency. Contents of the invention [0003] The purpose of the pres...

AI Technical Summary

Problems solved by technology

For wireless power supply application scenarios where the receiving voltage is low due to large transmission distance or light load conditions, the transmission efficiency of the traditional voltage-type resonant system often fails to meet the requirements, while the current-type resonant wireless power supply system with a single receiving coil Conversion efficiency also has its limits, so the receiving system needs to be optimized, using dual receiving coils for optimization to improve energy transmission efficiency

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