Magnetic coupling resonant-type wireless electric energy transmission energy active injection emission device
A resonant radio and transmitting device technology, applied in circuit devices, electrical components, etc., can solve problems such as difficulty and high power, and achieve the effects of high conversion efficiency, simple structure, and convenient control.
Inactive Publication Date: 2018-06-01
XIAMEN UNIV
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Problems solved by technology
[0004] The purpose of the present invention is to provide an active injection transmitter device for magnetically coupled resonance wireless power transmission to solve the problem that the existing wireless charging transmitter is limited by the high frequency characteristics of the device and is difficult to achieve high power and low switching loss. variable flow problem
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[0016] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.
[0017] see figure 1 , the present invention provides an active energy injection transmitting device for magnetically coupled resonant wireless power transmission, comprising a coupling inductor, two clamping diodes D 1 、D 2 , a freewheeling diode, a power switch S 1 , a snubber capacitor C b , a resonant capacitor C p and a transmitting coil L p ;
[0018] The primary winding L of the coupled inductor 1 One end of the power supply V in anode and the first clamping diode D 1 The anode of the coupled inductor is connected; the primary winding L of the coupled inductor 1 The other end of the second clamping diode D 2 anode of the freewheeling diode D 3 The anode is connected; the freewheeling diode D 3 cathode of the first clamping diode D 1 The cathode and the secondary winding of the coupled inductor L 2 One end of the coupled inductor is c...
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The invention discloses a magnetic coupling resonant-type wireless electric energy transmission energy active injection emission device. The energy active injection emission device comprises a coupling inductor, two clamping diodes, a freewheeling diode, a power switch tube, a buffer capacitor, a resonant capacitor and an emission coil. The device can be divided to form three main working modes offront-end energy shaping, buffer-end energy injection and emission-end free resonance; a front end employs the coupling inductor to store energy, a controllable current source is obtained, and the stored energy can be increased by two times within each switch period compared with a single inductor; and a buffer end employs the buffer capacitor to collect injected energy, and meanwhile, a condition is also provided for zero-voltage conduction and zero-voltage cutoff of the power switch tube. Free resonance of the emission end, energy shaping of the front end and energy injection are dependentto each other with a part time, so that self-adaptive resonance within the whole period is achieved, and the influence brought by whether a resonant frequency is consistent with a switch frequency ofa converter or not on a resonant point is unnecessary to consider.
Description
technical field [0001] The invention relates to the field of wireless power transmission, in particular to an energy active injection transmitting device for magnetic coupling resonance wireless power transmission. Background technique [0002] Traditional contact power transmission has shortcomings such as line aging leakage, contact sparks, overheating and burning, and in some special occasions such as submarine power supply and artificial organ power supply, these shortcomings will bring great safety hazards. Compared with the traditional contact power transmission, wireless power transmission has the characteristics of flexible mobility, strong environmental adaptability, and no need for a unified physical interface, and has received extensive attention and application. Many implementation methods of wireless power transmission technology have been proposed at home and abroad, such as electromagnetic induction, magnetic coupling resonance, laser, microwave, etc. Among t...
Claims
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Login to View More IPC IPC(8): H02J50/12
CPCH02J50/12
Inventor 何良宗郑智鹏郭栋张建寰陈文芗
Owner XIAMEN UNIV