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Wireless power supply receiving device, transmitting device, system and control method thereof

A technology of wireless power supply and transmitting device, applied in the direction of circuit devices, battery circuit devices, collectors, etc., can solve problems such as unstable output power, reduced system power supply efficiency, and reduced inductive coupling coefficient, and achieve the effect of improving stability

Inactive Publication Date: 2019-08-16
BEIJING INSTITUTE OF TECHNOLOGYGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to provide a wireless power supply receiving device, a transmitting device, a system and a control method thereof, which solves the problem that in the prior art, the inductive coupling coefficient will drop sharply due to the large relative position change between the wireless charging device and the charged device , leading to the reduction of power supply efficiency of the system and the problem of unstable output power

Method used

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  • Wireless power supply receiving device, transmitting device, system and control method thereof
  • Wireless power supply receiving device, transmitting device, system and control method thereof
  • Wireless power supply receiving device, transmitting device, system and control method thereof

Examples

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Embodiment 1

[0053] figure 1 It is a schematic structural diagram of a wireless power supply transmitting device according to an embodiment of the present invention, such as figure 1 As shown, the embodiment of the present invention provides a wireless power supply transmitting device, including an adjustable matching capacitor module 150, a current detection module 120, a signal receiving module 170, a power amplifier power supply module 140, a power amplifier module 130, a transmitting coil module 160 and a control module 110 .

[0054]Wherein, the second end of the current detection module 120 is connected to the second end of the power amplifier module 130, and the first end of the current detection module 120 is connected to the control module 110 for detecting the power amplifier module 130 outputting the current signal, converting the current signal into a current phase PWM signal, and sending the current phase PWM signal to the control module 110;

[0055] The second end of the p...

Embodiment 2

[0076] Figure 5 It is a schematic diagram of a control method of a wireless power supply transmitting device according to an embodiment of the present invention, as shown in Figure 5 As shown, this embodiment provides a control method for a wireless power supply transmitting device, including:

[0077] Step S10, obtaining the received power received by the wireless power supply receiving device;

[0078] Step S20, receiving the second terminal current phase PWM signal of the power amplifier module;

[0079] Step S30, generating a power amplifier driving PWM signal;

[0080] Step S40, calculating the voltage-current phase difference according to the current phase PWM signal and the power amplifier driving PWM signal;

[0081] Step S50, adjusting the capacitance value of the adjustable matching capacitance module and / or the voltage value of the power amplifier power supply module according to the received power and the voltage-current phase difference.

[0082] Specificall...

Embodiment 3

[0109] Figure 8 It is a schematic structural diagram of a wireless power supply receiving device according to an embodiment of the present invention, as shown in Figure 8 As shown, this embodiment provides a wireless power supply receiving device, including: a receiving coil module 210 , a matching capacitor module 230 , a received power detection module 240 , a signal transmitting module 220 and a load module 250 .

[0110] Wherein, the first end of the receiving coil module 210 is connected to the first end of the matching capacitor module 230, and is used for coupling and inputting power supply power, and coupling and outputting received power value information received by the load module 250;

[0111] The second end of the matching capacitor module 230 is connected to the first end of the load module 250 for forming a matching network with the receiving coil module 210;

[0112] The first end of the received power detection module 240 is connected to the first end of th...

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Abstract

The invention provides a wireless power supply receiving device, a transmitting device, a system and a control method thereof. The wireless power supply transmitting device includes an adjustable matching capacitor module, a current detection module, a signal receiving module, a power amplifier power supply module, a power amplifier module, a transmitting coil module, and a control module. The wireless power supply receiving device includes a receiving coil module, a matching capacitor module, a load module, a received power detection module, and a signal transmitting module. The control module in the transmitting device calculates the voltage-current phase difference according to a current phase PWM signal and a power amplifier drive PWM signal at the output port of the power amplifier module, and adjusts the capacitance value of the matching capacitor module and / or the voltage value of the power amplifier power supply module according to the received power value information of the wireless power supply receiving device and the voltage-current phase difference. The wireless power supply transmitting device provided by the invention improves the power supply efficiency of the system and the stability of the output power.

Description

technical field [0001] The present invention relates to the technical field of wireless power supply, in particular to a wireless power supply receiving device, a transmitting device, a system and a control method thereof. Background technique [0002] Inductive mutual coupling wireless power supply technology can provide power to devices without physical contact. This technology has received extensive attention in many fields, including: wireless charging of electric vehicles, wireless charging of handheld devices, radio frequency identification, implanted medical electronics, etc. [0003] The inductive mutual coupling type wireless power supply device in the prior art includes a transmitting device and a receiving device, the transmitting device includes a primary coil, the receiving device includes a secondary coil matching the primary coil, and an alternating current of a certain frequency passes through the primary coil, A certain current is generated in the secondary...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02J50/12H02J7/00H02J50/90
Inventor 刘大可苗志东龚辰
Owner BEIJING INSTITUTE OF TECHNOLOGYGY