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Novel high-density wireless energy transmission coil structure

A wireless power transmission, high-density technology, applied in the direction of transformers/inductor coils/windings/connections, circuits, inductors, etc., can solve the problems of not improving the efficiency of long-distance WPT systems, and achieve increased transmission power and transmission efficiency And the effect of system space flexibility, small size and low power supply frequency

Active Publication Date: 2018-06-26
TIANJIN POLYTECHNIC UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, they do not increase the efficiency of long-distance WPT systems

Method used

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  • Novel high-density wireless energy transmission coil structure
  • Novel high-density wireless energy transmission coil structure
  • Novel high-density wireless energy transmission coil structure

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Embodiment Construction

[0026] It should be noted that, in the case of no conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other.

[0027] In the embodiment of the present invention, such as figure 1 As shown, Us is a high-frequency inverter voltage source, and the transmitting system also includes a compensation circuit and a transmitting coil connected in parallel by 2 small coils; the inner radius of the 2 small rectangular coils in parallel is 17cm, the outer radius is 30cm, and the resonance frequency is 100kHz. Together with the SS compensation circuit, it constitutes an electromagnetic emission device.

[0028] The transmitting coil with 2 small coils connected in parallel is composed of two strongly coupled small coils (transmitting small coil 1 and transmitting small coil 2) which are connected in parallel with the ends of the same name in a left-handed winding method, and the mutual inductance coefficient between them is relati...

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Abstract

The invention discloses a novel high-density wireless energy transmission coil structure, wherein a transmitting coil is formed by connecting the dotted terminals of a plurality of strongly coupled small coils in parallel by a unidirectional-rotation winding mode, wherein a receiving coil is formed by serially connecting the dotted terminals of a plurality of coupled small coils by a counter-rotation winding mod, and the resonant frequency of the small coils forming the receiving coil and the resonant frequency of the small coils forming the transmitting coil are consistent. The transmitting coil of the structure is formed by two strong coupled small coils which are connected in parallel, the mutual inductance coefficient between each other is larger, close to 1, the flux density of the transmitting coil is greatly enhanced, and a foundation is laid for high-efficiency energy transmission. The inductance value of the two small coils constituting the receiving coil is much larger than the sum of the inductance values of two individual coils, thereby greatly increasing the transmission efficiency. The structure increases the transmission distance and power density of the coupling mechanism under the premise of ensuring the space required for transmission and reception at both ends, the safety distance and the required electric energy.

Description

technical field [0001] The invention belongs to the field of wireless power transmission, and in particular relates to a novel high-density wireless power transmission coil structure. Background technique [0002] Since it was discovered in 1840 that the use of electromagnetic induction and wires can transmit electric energy, the transmission of electric energy is mainly carried out by direct contact of wires. The charging of electrical equipment is generally carried out through plugs and sockets, but when high-power charging is performed, there is a risk of high-voltage electric shock in this charging method. And due to the existence of friction and wear, the safety, reliability and service life of the system are low, especially in some flammable and explosive fields such as chemical industry and mining, which can easily cause major accidents. The new contactless power transmission system adopts the principle of electromagnetic induction, power electronics technology and c...

Claims

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Application Information

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IPC IPC(8): H02J50/10H01F27/28H01F38/14
CPCH01F27/28H01F38/14H02J50/10
Inventor 李阳刘柳杨庆新赵景太姜山董维豪薛明
Owner TIANJIN POLYTECHNIC UNIV
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