Detection method and device for vehicle load and vehicle

The invention relates to a vehicle load detection method and device and a vehicle, the vehicle comprises a sampling device, the sampling device is used for collecting the height variation of the two sides of an axle corresponding to the vehicle, and the method comprises the steps that through the sampling device corresponding to each axle, the sampling value of each axle is obtained; respectively inputting the sampling value of each axle into a corresponding camber height algorithm to obtain a plate spring camber height of each axle; determining the axle load of each axle according to the plate spring arc height of each axle; and determining whether the vehicle is overloaded or not according to the axle load of each axle. According to the invention, whether the vehicle is overloaded or not can be accurately judged.