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Wireless charging system and coil offset detection method and device thereof

A technology of wireless charging and offset detection, which is applied in the direction of circuit devices, battery circuit devices, charging stations, etc., and can solve the problem of excessive offset position of the wireless charging coil

Active Publication Date: 2018-10-23
ZTEV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The main purpose of the present invention is to provide a wireless charging system and its coil offset detection method and device, aiming to solve the problem that the wireless charging coil offset position is too large

Method used

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  • Wireless charging system and coil offset detection method and device thereof
  • Wireless charging system and coil offset detection method and device thereof
  • Wireless charging system and coil offset detection method and device thereof

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Embodiment Construction

[0040] It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0041] Based on the above problems, the present invention provides a coil offset detection method for a wireless charging system.

[0042] refer to figure 1 , figure 1 It is a schematic flowchart of the first embodiment of the coil offset detection method of the wireless charging system of the present invention.

[0043] In an embodiment, the coil offset detection method of the wireless charging system includes:

[0044] Step S10, acquiring the induced voltages on a set of detection coils, and calculating the difference of the acquired set of induced voltages;

[0045] In this embodiment, by using a transformer with the primary and secondary sides completely separated and without electrical connection, the mutual magnetic field coupling of the primary and secondary coils is used to realize power transmission betwee...

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Abstract

The invention discloses the coil offset detection method of a wireless charging system. The method comprises the following steps of acquiring the induction voltages of one group of detection coils andcalculating the difference value of one group of acquired induced voltages; comparing the calculated voltage difference value with a preset threshold, determining whether the voltage difference valueis greater than or equal to the preset threshold; and if the voltage difference value is greater than or equal to the preset threshold, according to the voltage difference value, acquiring the offsetinformation of a current secondary coil and outputting the offset information. The invention also discloses the coil offset detection device of the wireless charging system. In the invention, duringa wireless charging process, according to a secondary coil offset condition, offset information is output.

Description

technical field [0001] The present invention relates to the technical field of wireless charging, in particular to a wireless charging system and a coil offset detection method and device thereof. Background technique [0002] Electric vehicles will gradually become an important direction for the future development of motor vehicles. At present, many governments are vigorously supporting and promoting the development of electric vehicles. At present, the wireless charging method used in electric vehicle charging uses a transformer with completely separated primary and secondary sides and no electrical connection, and uses the mutual magnetic field coupling of the primary and secondary sides to realize the transmission of electric energy between the primary and secondary sides through the air. Wireless power transmission is an effective solution to realize "distributed charging" under the background of insufficient energy storage capacity of electric vehicle batteries, large ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J50/10H02J50/12H02J50/90H02J7/00B60L11/18
CPCH02J7/025H02J50/10H02J50/12H02J50/90B60L53/38Y02T10/70Y02T90/12Y02T10/7072Y02T90/14
Inventor 周诗杰吴坤胡超浦锡锋梁立科毛涛月高摇光罗勇郁志勇赵勇
Owner ZTEV