Four-coil receiving device improving mobile wireless electric energy transmission quality, and application of four-coil receiving device
A receiving device and wireless energy technology, which is applied in the direction of circuit devices, power management, transportation and packaging, etc., can solve the problems affecting the use effect of electric vehicles and other equipment, affecting the quality of wireless energy transmission, and damaging energy storage equipment. Effects of transmission efficiency, cost reduction, and pressure reduction on energy storage equipment
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[0030] Example 1
[0031] This embodiment provides a four-coil receiving device for improving the quality of wireless power transmission. It includes two sets of coils. Each set of coils includes two coils. The two coils are connected to each other and face different polarities. Emitter, so that the two coils in each coil group have a phase angle of 180 degrees in the space magnetic field, so that the space magnetic field induces two opposite electromotive forces on the two coils and winds between the two coils. The opposite physical structure allows the electromotive force generated on the two coils to be superimposed.
[0032] The two sets of coil sets have a 90-degree phase angle difference in the spatial magnetic field, so that when one set of coil sets passes the largest magnetic flux, the other set of coil sets passes the smallest magnetic flux.
[0033] It also includes an outer rectifier circuit, wherein the output end of each coil group is connected to an outer rectifier circu
Example Embodiment
[0036] Example 2
[0037] This embodiment provides an application of the four-coil receiving device for improving the quality of wireless power transmission provided by embodiment 1, which is used for mobile wireless charging of electric vehicles (also called "charging while walking"), and decomposes the energy supply track For different polarities, a four-coil receiving device is installed at the bottom of the vehicle. During the movement of the vehicle, the four coils obtain energy at the same time, but the output voltage is relatively stable due to the difference in the phase of the spatial magnetic field.
Example Embodiment
[0038] Example 3
[0039] This embodiment provides an application of the four-coil receiving device for improving the quality of wireless power transmission provided by Embodiment 1. It can be used for all applications that do not have batteries or rely solely on energy storage equipment for insufficient running time or high cost of energy storage equipment. Mobile electrical equipment, when these equipment are in any position of the track laying direction, energy can be directly transmitted from the energy supply track to the receiving equipment end, thereby achieving stable power supply for equipment without energy storage (or less energy storage capacity).
[0040] In this embodiment, the condition that the running time of the energy storage device is insufficient refers to the condition that the running time is less than or equal to 50% of the actual required working time after a full charge.
[0041] In this embodiment, the case where the cost of the energy storage device is too hi
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