Automobile wireless charging alignment method and device thereof, storage medium and terminal

A technology for wireless charging and automobiles, applied in electric vehicle charging technology, circuit devices, battery circuit devices, etc., can solve problems such as inability to eliminate influence, slow response speed, poor alignment accuracy, etc.

CN111204238AActive Publication Date: 2020-05-29ZONGMU TECH SHANGHAI CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Publication Date
2020-05-29

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Abstract

The invention discloses an automobile wireless charging alignment method and a device thereof, a storage medium and a terminal. The method comprises the steps that the position and the advancing routeof a transmitting coil are acquired; in the running process of an automobile, a control switch connected with a receiving coil in parallel is controlled to be closed to form current detection loop detection; a coupling detection induction current in the current detection loop is detected at different positions of the automobile relative to the transmitting coil; a coupling coefficient at each position is determined according to the coupling detection induction current at different positions; a target coupling curve and a peak value thereof are determined; and when the obtained coupling coefficient approaches a peak coupling coefficient and the difference between the obtained coupling coefficient and the peak coupling coefficient is smaller than a preset threshold, a parking instruction issent and the control switch is controlled to be switched off. According to the scheme provided by the invention, the wireless charging circuit is multiplexed to realize a detection function, automatic coil alignment is realized on the basis of not additionally adding detection equipment and positioning equipment, manual operation of a user is not needed, the alignment precision is high, and the realization cost is low.
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Description

technical field

[0001] The present invention relates to the technical field of unmanned driving, and in particular to a wireless charging alignment method and device, a storage medium, and a terminal for automobiles. Background technique

[0002] With the development of new energy vehicles, the application of wireless charging technology in the automotive field has become one of the hot spots in recent years. Generally speaking, the wireless charging technology applied to automobiles is realized through the mutual coupling between the receiving coil installed on the vehicle end and the transmitting coil installed on the ground.

[0003] In practical applications, the wireless charging system allows power transmission between the transmitting coil and the receiving coil when the offset between the transmitting coil on the ground and the receiving coil on the vehicle end is within the tolerable error range on the horizontal plane. This puts stricter requirements on the parkin...

Examples

Embodiment Construction

[0055] As mentioned in the background art, some of the existing wireless charging alignment technologies for automobiles require manual operation, and some can be implemented automatically, but the implementation cost is high and the response speed is slow.

[0056] Further, when the existing automatic parking technology determines whether the car has parked at the optimal position according to the coupling coefficient of the transmitting coil and the receiving coil, it is based on whether the coupling coefficient reaches a peak value as the judging criterion. That is, when it is detected that the current coupling coefficient reaches a peak value, a parking command is issued, and the car stops and continues to move forward based on the parking command.

[0057] However, considering multiple factors such as data transmission time and car response time, there is inevitably a certain delay between when the parking command is issued and when the car actually stops. As a result, the c...