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Distance detection method and system for wireless power transmission device

A technology of wireless power transmission and distance detection, which is applied in the direction of circuit devices, information technology support systems, electrical components, etc., and can solve the problem of increasing the volume of the transmission coil

Active Publication Date: 2020-06-30
DELTA ELECTRONICS INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This method is acceptable when applied to a system where the circuit module and the transmission coil are integrated, but in applications where the circuit module and the transmission coil are separated, there will be more signal lines between the circuit module and the transmission coil, and the coil sensor Will increase the volume of the transmission coil part

Method used

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  • Distance detection method and system for wireless power transmission device
  • Distance detection method and system for wireless power transmission device
  • Distance detection method and system for wireless power transmission device

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Embodiment Construction

[0072] In order to make the description of the present invention more detailed and complete, reference may be made to the attached drawings and various embodiments described below, and the same numbers in the drawings represent the same or similar components. On the other hand, well-known components and steps have not been described in the embodiments in order not to limit the invention unnecessarily. In addition, for the sake of simplifying the drawings, some known and conventional structures and elements will be shown in a simple and schematic manner in the drawings.

[0073] The invention mainly relates to a distance detection method and system of a wireless power transmission device. Wherein, the wireless power transmission device of the present invention includes circuit modules such as a transmitting end circuit and a receiving end circuit. The transmitting coil of the transmitting end circuit and the receiving coil of the receiving end circuit can form an induction circ...

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Abstract

The invention discloses a distance detection method and system for a wireless power transmission device. The wireless power transmission device comprises a transmitting terminal circuit and a receiving terminal circuit. A transmitting coil of the transmitting terminal circuit and a receiving coil of the receiving terminal circuit form an induction circuit through magnetic coupling. The distance detection method comprises the following steps: calculating an inductance value of an excitation inductor of the induction circuit according to an electrical parameter of the receiving terminal circuitand an electrical parameter of the transmitting terminal circuit; and calculating the distance between the transmitting coil and the receiving coil according to the inductance value of the exciting inductor of the induction circuit. According to the distance detection method and system of the wireless power transmission device, the distance between the transmitting coil and the receiving coil is calculated by adopting a method of detecting the electrical parameters of the circuit module, so that the distance detection is not influenced by obstacles, and the design of the circuit module and thecoils is more flexible.

Description

technical field [0001] The present invention relates to a wireless power transmission device, in particular to a distance detection method and system for the wireless power transmission device. Background technique [0002] In a wireless power transmission system, the distance between transmission coils (for example, including a transmitting coil and a receiving coil) has an important influence on the operating efficiency of the transmission system, the power capacity of the transmission system, and the stability of the control system. At greater distances between the transmission coils, the efficiency of the transmission system is significantly reduced or the power capacity of the transmission system is reduced. [0003] In order to improve the points mentioned above, it is necessary to detect the distance between the transmission coils, and then optimize the operating efficiency or power capacity of the transmission system by adjusting the distance between the transmission...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J50/90
CPCH02J50/90H02J50/12H02J50/80H02J13/00009H02J13/00022Y04S40/121Y04S40/126Y02E60/00
Inventor 杜帅林廖永恺
Owner DELTA ELECTRONICS INC
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