A modular wireless charging system that realizes the decoupling of double-row same-side coils
A technology of wireless charging, double rows on the same side, applied in charging stations, electric vehicle charging technology, power management, etc., can solve problems such as lowering system efficiency, difficulty in system control, and current influence, so as to improve transmission efficiency and eliminate mutual inductance Influence and reduce the effect of control difficulty
Active Publication Date: 2022-05-27
ZHEJIANG UNIV
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Problems solved by technology
The multi-coil wireless energy transfer technology is conducive to breaking through the limitations of traditional single-channel wireless charging. Due to the mutual inductance between the coils on the same side, the current in the power device on the same side is affected, which will not only reduce the efficiency of the system, but also make the system It is difficult to control, so there is no practical application at present
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[0022] Example: A modular wireless charging system that realizes decoupling of double-row coils on the same side, such as figure 1 As shown, the system includes a plurality of power transmitters 109 to wirelessly transmit power to one or more power receivers 110, each of the power transmitters 109 including a drive power source 101, a transmit compensation network 102 and a transmit coil 103 , the driving power supply 101 outputs high-frequency alternating current, which is applied to the transmission compensation network 102 and the transmission coil 103, so that the power transmitter 109 generates a high-frequency alternating magnetic field. The transmission compensation network 102 may include capacitors and / or inductors, and compensation capacitors are commonly used The form of series compensation with the transmitting coil can cancel the reactive power in the power transmitter 109; each of the power receivers 110 includes a receiving coil 104, a receiving compensation netw...
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The invention discloses a modular wireless charging system for decoupling double-row same-side coils. The system includes more than two power transmitters or power receivers. The power transmitter includes a driving power supply and a transmission compensation network. and a transmitting coil, the power receiver includes a receiving coil, a receiving compensation network and a rectifier, the receiving coils or transmitting coils are placed in double rows, and each receiving coil and / or transmitting coil is correspondingly connected One or two multi-winding decouplers are used to eliminate the mutual inductance effect between receiving coils or transmitting coils on the same side, and realize the decoupling of receiving coils and / or transmitting coils; the present invention can be used to eliminate the mutual inductance between coils on the same side Therefore, it is of great significance to improve the transmission efficiency of the modular wireless charging system and reduce the difficulty of system control.
Description
technical field [0001] The invention relates to the technical field of wireless power transmission, in particular to a modular wireless charging system that realizes decoupling of double-row coils on the same side. Background technique [0002] Because of its safety and convenience, wireless power transmission technology is widely used in various electrical equipment, such as mobile terminals, medical equipment, and electric vehicles. As a representative of high-power wireless charging applications, wireless charging technology for electric vehicles has attracted a lot of attention due to a series of advantages such as high efficiency and convenience, low maintenance cost, and no environmental impact. Although low- and medium-power wireless charging technology has been developed to some extent, high-power wireless fast charging is still under study. The multi-coil wireless energy transmission technology is conducive to breaking through the limitations of traditional single-...
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IPC IPC(8): H02J50/10H02J50/40B60L53/12
CPCH02J50/10H02J50/40B60L53/12Y02T10/70Y02T10/7072Y02T90/14Y02T10/72
Inventor 钟文兴朱晨徐德鸿
Owner ZHEJIANG UNIV