Wireless energy transmission system

Abstract

The embodiment of the invention provides a wireless energy transmission system, and belongs to the technical field of wireless charging. According to the system, whether the output power of a transmitting module and the output power of a receiving module reach the maximum value or not is judged, when both the output power of the transmitting module and the output power of the receiving module do not reach the maximum value, that is, the transmitting module and the receiving module are not in a resonant state, in order to adjust the transmitting module and the receiving module to be in the resonant state again, a first control circuit simultaneously controls a high-frequency power supply to adjust the circuit frequency thereof and controls a transmitting circuit to adjust the circuit frequency thereof, and a second control circuit controls a receiving circuit to adjust the circuit frequency thereof at the same time. Therefore, the wireless energy transmission system realizes the maximumtransmission efficiency and the maximum transmission power through simultaneously adjusting the circuit frequencies of the high-frequency power supply, the transmitting circuit and the receiving circuit.

Description

technical field [0001] The present invention relates to the technical field of wireless charging, and in particular, to a wireless energy transmission system. Background technique [0002] With the development of miniaturization and intelligence of electronic equipment and the emergence of new energy vehicles, although the charging interface of electronic equipment tends to be unified, the emergence of various fast charging technologies makes people face the problem of numerous charging plugs and different standards. . In addition, for people who travel and work, a large number of electronic devices correspond to a large number of chargers, adding more burdens to going out. Therefore, wireless energy transmission technology emerges as the times require, which is the best way to solve this contradiction. [0003] Wireless energy transfer technology, as the name suggests, enables electrical energy to be transferred in the air without using a charging cable. Wireless energy ...

AI Technical Summary

Problems solved by technology

[0004] The wireless energy transmission technology is widely used in the magnetic coupling resonance type. In the current research of the magnetic coupling resonance type frequency conversion technology, it is mainly based on the self-tuning technology. Although this method breaks the traditional shackles of fixed frequency tuning, it solves the problem of However, the essence of frequency tracking tuning is still impedance matching. In actual circuits, this method is likely to cause changes in the parasitic capacitance and inductance of the wires due to the working time, circuit connection, and frequency. The tuning accuracy is very low. Low, so the frequency drift caused by the cross-coupling phenomenon cannot be completely overcome, that is, the transmission efficiency and transmission power cannot be guaranteed to be maximized

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