Electric vehicle wireless charging transmission system and transmission coil switching method and device thereof

A wireless charging and transmitting coil technology, which is applied in battery circuit devices, electric vehicles, circuit devices, etc., and can solve problems such as poor real-time performance.

Active Publication Date: 2020-02-07
NIO CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to solve the above-mentioned problems in the prior art, that is, to solve the technical problem of poor real-time performance of the transmission coil switching mode in mobile wireless charging, the present invention provides a wireless charging transmission system for electric vehicles, and also provides an electric vehicle Transmission coil switching method and device for vehicle wireless charging transmission system

Method used

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  • Electric vehicle wireless charging transmission system and transmission coil switching method and device thereof
  • Electric vehicle wireless charging transmission system and transmission coil switching method and device thereof
  • Electric vehicle wireless charging transmission system and transmission coil switching method and device thereof

Examples

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Embodiment approach 1

[0108] In this embodiment, after the switch is connected in series with the wireless charging transmitting coil, it is connected in parallel with the AC side of the inverter. The working state of the charging transmitting coil specifically includes: when the resonant current of the wireless charging transmitting coil in the power supply state increases instantaneously and the inverter of the wireless charging transmitting unit is locked, the electric vehicle to be charged is about to enter the area corresponding to the uncharted area. The switching switch of the wireless charging transmitting coil in the power supply state is closed, and the switching switch of the wireless charging transmitting coil in the power supply state is turned off. At the same time, after the above switching action is completed and the inverter is turned on, the wireless charging transmitting coil in the unpowered state and the wireless charging receiving coil perform power transmission, that is, the w...

Embodiment approach 2

[0112] In this embodiment, after the switch is connected in series with the wireless charging transmitting coil, it is connected in parallel with the AC side of the inverter. The working state of the charging transmitting coil specifically includes: after the electromagnetic induction voltage of the wireless charging transmitting coil in the unpowered state reaches the preset threshold, the switching switch of the wireless charging transmitting coil is closed, and the resonant current of the wireless charging transmitting coil in the powered state is instantaneous After increasing, the switching switch of the wireless charging transmitting coil is turned off. At the same time, after the switching switch of the wireless charging transmitting coil in the power supply state is turned off, the inverter connected to it is blocked, and after the switching switch of the wireless charging transmitting coil in the non-powered state is closed, the inverter connected to it is turned on. ...

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Abstract

The invention relates to an electric vehicle wireless charging transmitting system and a transmitting coil switching method and device thereof. The system includes a plurality of wireless charging transmitting units laid sequentially along a driving road, and adjacent wireless charging transmitting coils are laid overlappingly; the method According to the resonant current of the wireless charging transmitting coil, among the multiple wireless charging transmitting coils laid in sequence in the wireless charging transmitting unit, the working states of two adjacent wireless charging transmitting coils are switched, and the resonant current and the electromagnetic induction voltage of the wireless charging transmitting coil are also used. Switch the working states of the wireless charging transmitting coils of two adjacent wireless charging transmitting units among the multiple wireless charging transmitting units laid in sequence. The electric vehicle wireless charging transmitting system and its transmitting coil switching method and device provided by the present invention can automatically switch the wireless charging transmitting coil and realize the charging of the running electric vehicle.

Description

technical field [0001] The invention relates to the technical field of electric vehicle charging, in particular to an electric vehicle wireless charging transmitting system and a transmitting coil switching method and device thereof. Background technique [0002] Electric wireless charging technology is derived from wireless power transmission technology, which can use electromagnetic induction or resonant wireless transmission methods to transmit electric energy from power supply equipment to electric vehicles, and the electric vehicles charge the battery according to the received electric energy. However, due to the limitation of the battery's energy density and storage power, its charging speed cannot be greatly improved due to factors such as battery technology, charging technology, and grid compatibility, which in turn reduces the battery life of electric vehicles. [0003] At present, by laying transmitting coils on the driving lane of electric vehicles and setting rec...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02J50/12H02J50/40H02J7/00
CPCH02J50/12H02J50/402
Inventor 范金焰
Owner NIO CO LTD
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