A dynamic wireless power supply device for electric vehicles with high transmission power stability
A wireless power supply and electric vehicle technology, applied in electric vehicle charging technology, electric vehicles, circuit devices, etc., can solve problems such as poor stability and large variation in transmission power, and achieve improved stability, flexible and convenient driving, and expanded application prospects. Effect
Active Publication Date: 2019-11-19
HARBIN INST OF TECH +1
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Problems solved by technology
[0003] The purpose of the present invention is to solve the problem that the transmission power of the existing electric vehicle dynamic wireless power supply technology has a large variation range and poor stability, thereby providing a dynamic wireless power supply device for electric vehicles with high transmission power stability
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specific Embodiment approach 1
[0023] Embodiment 1: A dynamic wireless power supply device for electric vehicles with high transmission power stability described in this embodiment, including an energy transmitting device and an energy receiving device;
[0024] The energy transmitting device includes an inverter power supply, a multi-stage compensation circuit and a rail-type transmitting coil 1;
[0025] The inverter power supply provides high-frequency alternating current to the rail-type transmitting coil 1 through a multi-level compensation circuit, which excites a high-frequency alternating magnetic field, and the energy receiving device resonates with the high-frequency alternating magnetic field to generate an induced electromotive force to supply power to the automobile motor;
[0026] The multi-level compensation circuit includes an inductor L1, an inductor L2, a capacitor C1 and a capacitor C2;
[0027] One end of the inductor L1 is connected to one end of the capacitor C1, one end of the inducto...
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The invention discloses a dynamic wireless power supply apparatus with high transmission power stability and used for an electric vehicle, belongs to the technical field of wireless electric energy transmission, and aims to solve the problems of relatively high transmission power change amplitude and poor stability of the existing dynamic wireless power supply technology of the electric vehicle. The dynamic wireless power supply apparatus comprises an energy transmitting apparatus and an energy receiving apparatus; the energy transmitting apparatus comprises an inversion power supply, a multi-stage compensation circuit and a guiding rail type transmitting coil; the inversion power supply provides high frequency alternating current for the guiding rail type transmitting coil through the multi-stage compensation circuit to excite a high-frequency alternating magnetic field; the energy receiving apparatus and the high-frequency alternating magnetic field generate resonance to generate induced electromotive force for supplying power for an automobile motor; the multi-stage compensation circuit comprises an inductor L1, an inductor L2, a capacitor C1 and a capacitor C2; one end of the inductor L1 is connected with one end of the capacitor C1; one end of the inductor L2 is connected with one end of the capacitor C2; and the other end of the capacitor C1 is connected with the other end of the inductor L2. The dynamic wireless power supply apparatus is applicable to dynamic wireless power supply.
Description
technical field [0001] The invention belongs to the technical field of wireless power transmission. Background technique [0002] With the development of electric vehicle wireless power transmission technology, in order to completely get rid of the shackles of large-volume vehicle batteries, power supply guide rails are usually laid under the road to directly supply power to vehicles during driving, which is called dynamic wireless power supply technology. Due to the lack of electrical connection, the load power of the existing dynamic wireless power supply technology is greatly affected by the relative position of the vehicle and the power supply rail. Due to the complex actual road conditions, it is difficult to maintain a constant relative position between the vehicle and the power supply guide rail during driving, which will lead to a large change in the transmission power, which puts higher requirements on the power conversion circuit of the subsequent stage, which is n...
Claims
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IPC IPC(8): H02J50/12B60L53/122
CPCY02T10/70Y02T10/7072Y02T10/72Y02T90/14
Inventor 朱春波杨光逯仁贵魏国董帅宋凯崔超
Owner HARBIN INST OF TECH
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