E-type wireless electric energy transmission device and start control method
A technology for wireless power transmission and control circuits, applied in circuit devices, electrical components, etc., can solve problems such as transistors being easily damaged, and achieve the effect of reducing the voltage variation range, stable operation, and solving load sensitivity
Pending Publication Date: 2020-04-07
GUANGDONG UNIV OF TECH
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Problems solved by technology
When the withstand voltage value of the transistor selected by the device is lower than the peak voltage, the transistor is easily damaged
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[0030] The present application provides a Class E wireless power transmission device and a start-up control method. The transmitting end of the embodiment of the present application adopts an SPSS matching network, and a start-up and control circuit unit is added to the transmitting end. By setting the start-up and control circuit unit to adjust the working state of the high-frequency generation module of the E-class power amplifier at the transmitting end, the purpose of soft start of the device is achieved, so that the range of voltage variation at the drain-source stage of the switch tube is reduced, and the withstand voltage of the selected transistor is avoided. When the value is lower than the start-up peak voltage, the technical problem that the transistor is easily damaged; the SPSS matching network structure adopted by the transmitting end can achieve a constant voltage at the receiving end to a large extent, which solves the problem of load sensitivity in the prior art...
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The invention discloses an E-type wireless electric energy transmission device and a starting control method. The device comprises: a direct-current power supply module, wherein the direct-current power supply module is used for supplying energy to a transmitting end E-type power amplifier high-frequency generation module; a transmitting end starting and control circuit unit for controlling the transmitting end E-type power amplifier high-frequency generation module; a transmitting end E-type power amplifier high-frequency generation module which is used for inverting the direct current into an alternating current sine half-wave and transmitting the alternating current sine half-wave to a transmitting end SPSS matching network; the transmitting end SPSS matching network which is used for converting the alternating-current sine half-wave into a high-frequency alternating-current sine wave and transmitting the high-frequency alternating-current sine wave to a receiving end series resonance network; the receiving end series resonance network which is used for receiving high-frequency alternating-current sine waves and transmitting the high-frequency alternating-current sine waves to areceiving end rectification module; and the receiving end rectification module which is used for converting high-frequency alternating-current sine waves into a direct current and outputting the direct current to a load. According to the invention, the problem of load sensitivity in the prior art is solved, so that the device can still work stably when the load changes, and the performance of thedevice is improved.
Description
technical field [0001] The present application belongs to the technical field of wireless power transmission, and in particular relates to a class E wireless power transmission device and a start-up control method. Background technique [0002] In recent years, the low-power wireless power transmission technology industry has developed vigorously, and its related commercial chain products have gradually formed, including well-known low-power handheld electronic devices such as electric toothbrushes, earphones, MP3 (Media Player 3), smart watches, and mobile phones. . The charging devices of these low-power devices generally use single-tube power amplifiers as high-frequency inverter circuits. Among them, class E power amplifiers are relatively mature single-tube power amplifier circuit topologies. [0003] Class E power amplifier, referred to as Class E power amplifier, is a high-efficiency power amplifier with a power up to 100% under ideal conditions, that is, it can conv...
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IPC IPC(8): H02J50/12
CPCH02J50/12
Inventor 李志忠王波波童怀李优新曾研
Owner GUANGDONG UNIV OF TECH