Vehicle control method and device and vehicle

By acquiring the vehicle's wheel speed difference and suspension height, the target differential lock is automatically engaged, solving the problem of drivers having to frequently manually operate the differential lock and improving the vehicle's ability to get out of trouble and driving safety.

CN121084147APending Publication Date: 2025-12-09BYD CO LTD
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Patent Information

Application Number
CN202410733446.9
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2024-06-06
Publication Date
2025-12-09

AI Technical Summary

Technical Problem

In existing technologies, drivers need to frequently operate the differential lock manually to help the vehicle get out of trouble, resulting in poor driving safety and off-road experience, especially when the vehicle slips or passes through cross-axle terrain, the differential lock cannot be automatically locked.

Method used

By acquiring the vehicle's wheel speed difference and suspension height, the system automatically determines and locks the target differential lock, avoiding frequent manual operation by the driver. This is suitable for situations such as vehicle slippage or cross-axle road surfaces.

Benefits of technology

It improves driving safety and off-road experience, reduces misoperation, enhances control precision and accuracy, and prevents hardware damage caused by differential lock locking.

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Abstract

The invention discloses a vehicle control method and device and a vehicle, and belongs to the technical field of vehicles. The control method of the vehicle comprises the steps that under the condition that the vehicle runs, the wheel speed difference between two wheels included in each wheel pair in the vehicle and the suspension height from a hub of each wheel to the ground are obtained; determining a target differential lock from the at least one differential lock based on the at least one wheel speed difference and the plurality of suspension heights; and the target differential lock is controlled to be locked. According to the vehicle control method, a driver does not need to frequently and manually operate a differential lock, meanwhile, the vehicle can be well helped to get out of trouble under the conditions that the vehicle slips, a certain wheel is in a suspended state after the vehicle passes through a cross-axis road surface and the like, the application scene is wide, and therefore the driving safety and cross-country experience of the driver are improved.
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