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Passive long-distance wireless charging system

A long-distance wireless and charging system technology, applied in current collectors, electric vehicles, electrical components, etc., can solve the problems of limited wireless charging distance and charging location, and achieve the effects of convenient charging, high safety and convenient use.

Active Publication Date: 2020-02-21
SHANGHAI BINY ELECTRIC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The invention provides a passive long-distance wireless charging system to solve the problems of limited wireless charging distance and limited charging position of existing wearable devices

Method used

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Examples

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Embodiment 1

[0037] refer to figure 1, the present embodiment provides a passive long-distance wireless charging system, the wireless charging system is composed of a transmitting unit for transmitting electromagnetic wave signals and a receiving unit for receiving electromagnetic wave signals; the receiving unit includes a receiving antenna 1, a radio frequency rectification module, a power storage circuit and Boost circuit; wherein the radio frequency rectification module includes a first impedance matching circuit, a radio frequency rectification circuit, and a second impedance matching circuit; the receiving unit receives the electromagnetic wave signal emitted by the transmitting unit through the receiving antenna 1; the output end of the receiving antenna 1 is matched by the first impedance The circuit is connected to the input end of the radio frequency rectification circuit, the output end of the radio frequency rectification circuit is connected to the input end of the power storag...

Embodiment 2

[0051] refer to figure 2 , a passive long-distance wireless charging system provided in this embodiment, on the basis of the above-mentioned embodiment 1, the difference is that it includes a first receiving antenna, a second receiving antenna, a first radio frequency rectification module and a second radio frequency A rectification module, wherein the first radio frequency rectification module includes a first radio frequency rectification circuit, a second radio frequency rectification circuit, a first impedance matching circuit and a second impedance matching circuit, wherein the input end of the first radio frequency rectification module is connected to the lead of the first receiving antenna Pin 1, the circuit structure of the first radio frequency rectification module is the same as that of the radio frequency rectification module in embodiment 1.

[0052] In this embodiment, the third radio frequency rectification circuit includes an inductor L6 and a radio frequency r...

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Abstract

The invention provides a passive long-distance wireless charging system. The wireless charging system is composed of a transmitting unit for transmitting an electromagnetic wave signal and a receivingunit for receiving the electromagnetic wave signal. The receiving unit comprises a receiving antenna, a first impedance matching circuit, a radio frequency rectifying circuit, a second impedance matching circuit, a power supply storage circuit and a boosted circuit; the receiving unit receives the electromagnetic wave signal transmitted by the transmitting unit through the receiving antenna; theoutput end of the receiving antenna is connected to the input end of the radio frequency rectifying circuit through the first impedance matching circuit, the output end of the radio frequency rectifying circuit is connected to the input end of the power storage circuit through the second impedance matching circuit, the output end of the power storage circuit is connected with the input end of theboosted circuit, and the output end of the boosted circuit is connected with a load to supply power to the load. According to the invention, the to-be-charged equipment can realize long-distance wireless charging through the receiving antenna, and the problems of limited wireless charging distance and limited charging position of the existing wearable equipment are solved.

Description

technical field [0001] The invention relates to the technical field of wireless charging, in particular to a passive long-distance wireless charging system. Background technique [0002] Existing wearable devices are favored by more and more users because of their powerful functions. For wearable devices, the biggest challenge is how to properly and conveniently supply them with continuous power, and for many current wristband and watch designs, users must first take them off and plug them into wired chargers. Charging, charging is more troublesome. [0003] In order to solve the above problems, many products adopt an electromagnetic induction charging scheme. This solution utilizes resonant coils to conduct electrical energy. Specifically, a sending coil is set in the charger, and a receiving coil is set on the wearable device. By applying a changing current to the sending coil to generate a change in the electromagnetic field, the changing electromagnetic field is coupl...

Claims

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Application Information

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IPC IPC(8): H02J7/02H02J50/20H02J50/40H02H7/12
CPCH02H7/1213H02J50/20H02J50/40
Inventor 严少斌严飞飞轩北松韦小东王浩张成刘明生
Owner SHANGHAI BINY ELECTRIC
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