wireless power supply

A wireless power supply and antenna technology, applied in the direction of circuit devices, electrical components, etc., can solve problems such as complex device structures, and achieve the effect of suppressing changes and stabilizing wireless power transmission

Active Publication Date: 2017-12-01
PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
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Problems solved by technology

Furthermore, as the microwave generator in the wireless power supply device in the prior art, it needs to be composed of a power source that can control the power, which will make the device structure complicated.

Method used

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Examples

Experimental program
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Embodiment approach 1

[0049] figure 1 It is a diagram showing the basic configuration of the wireless power feeding device according to Embodiment 1 of the present invention. The first microwave generator 201 that generates electromagnetic waves (microwaves) transmits microwaves to the first power transmission antenna 203 via the first microwave transmission path 202 to supply constant power. As the first microwave transmission path 202, a distributor and a microwave amplifier are included depending on the case. The first microwave 205 is radiated from the power transmission surface 204 of the first power transmission antenna 203 , and the microwave is received by the power reception surface 206 of the first power reception antenna 207 . The first microwave 205 received by the power receiving surface 206 of the first power receiving antenna 207 is power converted in the first power conversion circuit unit 208 , and then power is supplied to the power feeding target unit 209 .

[0050] Similarly,...

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Abstract

The present invention provides a wireless power supply device capable of stable power transmission that can supply constant power using a small antenna whose power varies depending on the transmission distance, and whose transmission efficiency does not vary depending on the power transmission position. The wireless power supply device integrally constitutes the first power receiving antenna (207) and the second power receiving antenna (307) and connects them to the power supply object, and the direction in which the power receiving surface of the first power receiving antenna faces the power transmitting surface of the first power transmitting antenna parallel to the direction in which the power receiving surface of the second power receiving antenna faces the power transmitting surface of the second power transmitting antenna, wherein the first power receiving antenna has a power receiving surface opposite to the power transmitting surface (204) of the first power transmitting antenna (203). On the surface (206), the second power receiving antenna (307) has a power receiving surface (306) facing the power transmitting surface (304) of the second power transmitting antenna (303).

Description

technical field [0001] The present invention relates to a wireless power supply device for wirelessly transmitting and receiving electric power using electromagnetic waves (microwaves). Background technique [0002] In recent years, technological development of transmitting electric power using electromagnetic waves (microwaves) and supplying electric power wirelessly is underway. As an example of a wireless power feeding technology using electromagnetic waves, there is a system that uses microwaves in a frequency band of several hundred kHz to several MHz to utilize coupling or resonance of a magnetic field at a short distance of several meters or less where electromagnetic induction or magnetic resonance is possible. In such a system, a wireless power transmission method in which a power supply device that supplies power is fixed to a power receiving device that supplies power at a fixed position is often used. In addition, in order to wirelessly transmit electric power t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02J50/20
CPCH02J50/27H02J50/23H02J50/40H02J50/90H02J50/20
Inventor 谷博之
Owner PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO LTD
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