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Wireless charging method and system for electric vehicle

An electric vehicle and wireless charging technology, applied in electric vehicle charging technology, electric vehicles, charging stations, etc., can solve the problems of electric vehicle production cost increase, electromagnetic field leakage, electromagnetic radiation increase, etc.

Active Publication Date: 2020-05-08
CHINA FIRST AUTOMOBILE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, the increase in the size of the on-board receiving coil will directly lead to an increase in the production cost of electric vehicles, and the increase in the vertical distance between the ground transmitting coil and the on-board receiving coil will also lead to electromagnetic field leakage and increase in electromagnetic radiation.

Method used

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  • Wireless charging method and system for electric vehicle
  • Wireless charging method and system for electric vehicle
  • Wireless charging method and system for electric vehicle

Examples

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Embodiment 1

[0022] Embodiment 1 of the present invention provides a wireless charging method for an electric vehicle. The method can be executed by the wireless charging system of the electric vehicle, and is suitable for the situation of performing wireless charging control on the electric vehicle with an adjustable suspension system. figure 1 It is a schematic flowchart of a wireless charging method for an electric vehicle provided in Embodiment 1 of the present invention, as shown in figure 1 As shown, the method includes:

[0023] S101. When the vehicle controller detects that the current condition meets the wireless charging condition of the electric vehicle, it sends a suspension down adjustment instruction to the suspension adjustment controller of the electric vehicle.

[0024] In this embodiment, the vehicle controller can periodically detect whether the current condition of the electric vehicle meets the wireless charging condition of the electric vehicle, and detects whether t...

Embodiment 2

[0036] figure 2 It is a schematic flowchart of a wireless charging method for an electric vehicle provided in Embodiment 2 of the present invention. In this embodiment, on the basis of the above-mentioned embodiments, the optimization of "controlling the electric vehicle to perform wireless charging" is as follows: the charging circuit of the power battery of the electric vehicle is turned on through the battery management system controller.

[0037] Further, after the charging circuit of the power battery of the electric vehicle is turned on through the battery management system controller, it also includes: sending a charging permission instruction to the battery management system controller, and receiving a wireless signal from the electric vehicle. The charging status signal sent by the on-board charger; correspondingly, the method further includes: the battery management system controller generates a transmission instruction carrying transmission mode information based o...

Embodiment 3

[0055] image 3 It is a schematic flowchart of a wireless charging method for an electric vehicle provided in Embodiment 3 of the present invention. This embodiment is optimized on the basis of the above embodiments, and further, after the wireless charging of the electric vehicle is controlled, it further includes: the vehicle controller detects that the current condition meets the charging end condition of the electric vehicle , send a suspension upward adjustment instruction to the suspension adjustment controller, and the charging end condition includes at least one of the electric vehicle charging completion, the electric vehicle having a wireless charging fault, and receiving a charging end request; the suspension The adjustment controller adjusts the vehicle chassis up to the original suspension position before lowering the adjustment based on the suspension up adjustment command.

[0056] Further, before the lowering of the vehicle chassis to the lowest suspension pos...

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Abstract

The embodiment of the invention discloses a wireless charging method and system for an electric vehicle. The method comprises the steps: when a vehicle control unit detects that a current condition meets a wireless charging condition of the electric vehicle, transmitting a suspension down-regulation instruction to a suspension regulation controller of the electric vehicle; by the suspension regulation controller, regulating an automobile chassis of the electric vehicle to the lowest suspension position based on the suspension down-regulation instruction and sending a charging mode signal to the vehicle control unit and after receiving the charging mode signal, by the vehicle control unit, controlling the electric vehicle to perform wireless charging. By the adoption of the technical scheme, the production cost and the electric energy loss of the electric vehicle can be reduced, the driving mileage of the electric vehicle is increased, the working difficulty of whole vehicle arrangement of the electric vehicle is lowered, leakage of an electromagnetic field is reduced, and electromagnetic radiation occurring in the wireless charging process of the electric vehicle is reduced.

Description

technical field [0001] The invention relates to the technical field of electric vehicles, in particular to a wireless charging method and system for electric vehicles. Background technique [0002] With the gradual popularization of electric vehicles, electric vehicle wireless charging technology has received more and more attention due to its non-physical connection transmission characteristics. [0003] At present, electric vehicles are mostly wirelessly charged based on the principle of electromagnetic induction or electromagnetic resonance. Both of the above two principles are to install a transmitting coil on the ground and a receiving coil on the car body, and use magnetic coupling energy transmission for wireless charging. When performing magnetic coupling wireless charging, the size of the ground transmitting coil and the vehicle receiving coil has a positive correlation with the vertical energy transmission distance between the ground transmitting coil and the vehic...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B60L53/12B60L58/10
CPCB60L53/12B60L58/10Y02T10/70Y02T10/7072Y02T90/14
Inventor 胡越王金明姜瑞宋江柱刘健刘嘉奇冯冶冰
Owner CHINA FIRST AUTOMOBILE