Wireless power supply equipment
A wireless power supply and equipment technology, applied in circuits, inductors, electrical components, etc., can solve the problems of low far-field radiated power, large changes in the distance between two antennas, and narrow bandwidth.
Pending Publication Date: 2019-09-24
TYCO ELECTRONICS (SHANGHAI) CO LTD
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Problems solved by technology
At present, the NFC antenna can be used for short-distance communication, and its far-field radiation power is low, but due to its low operating frequency and narrow bandwidth, high-speed communication cannot be achieved
In addition, the above-mentioned antennas are usually used for communication in a static state. When the two antennas need to rotate with each other (for example, when an antenna is installed on a wireless high-definition camera that uses wireless power supply, there will be a relative gap between the two antennas. rotation movement), since the above-mentioned NFC antenna is a linearly polarized antenna, and the distance between the two antennas often changes greatly during the rotation process, the signal strength received by the antenna also changes drastically
In the prior art, the signal strength and signal reception quality are usually guaranteed by increasing the transmission power. However, increasing the transmission power will cause the communication signal to leak into the surrounding environment, which is easy to be eavesdropped by others and reduces the security and confidentiality of the communication. , the existing antennas are not suitable for security equipment with strict anti-eavesdropping requirements
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[0022] The technical solutions of the present invention will be further specifically described below through the embodiments and in conjunction with the accompanying drawings. In the specification, the same or similar reference numerals designate the same or similar components. The following description of the embodiments of the present invention with reference to the accompanying drawings is intended to explain the general inventive concept of the present invention, but should not be construed as a limitation of the present invention.
[0023] In addition, in the following detailed description, for purposes of explanation, numerous specific details are set forth in order to provide a comprehensive understanding of the embodiments of the present disclosure. It may be evident, however, that one or more embodiments may be practiced without these specific details. In other instances, well-known structures and devices are shown in diagrammatic form to simplify the drawings.
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The invention discloses wireless power supply equipment, which comprises a base, a docking station, a rotating shaft and an application device, wherein the base includes a wireless power supply transmitting coil and an antenna; the docking station includes a wireless power supply receiving coil, an antenna and a connection interface; the rotating shaft can be used for pivotally connecting the base and the docking station; and the application device is connected to the docking station through the connection interface.
Description
technical field [0001] The invention relates to a wireless power supply device. Background technique [0002] In the prior art, there are audio / video products that need to work while rotating, and slip rings are usually used as connectors for electrical energy and electrical signals. The long-term friction between the slip ring and the brush will cause poor contact, which will cause product instability. [0003] Antennas commonly used in smart home appliances or devices include dipole antennas, inverted-F antennas, etc. These antennas are simple in structure and high in efficiency, and are suitable for a certain distance in the far field (R>>2D2 / λ, R is the distance between two antennas transmitting signals to each other, D is the maximum outer dimension of the antenna, and λ is the working wavelength of the antenna ) communication. Nowadays, as wireless power supply technology is more and more widely used in the field of smart home appliances, the demand for short-...
Claims
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IPC IPC(8): H01Q1/22H01Q1/38H02J50/12
CPCH02J7/025H01Q1/22H01Q1/38H02J50/12H02J50/70H01F38/14H01F2038/143H04B5/72H04B5/79
Inventor 王少永宋玉明冯玉林
Owner TYCO ELECTRONICS (SHANGHAI) CO LTD