Hub motor driving all-road-condition off-road vehicle power system and control method

Abstract

The invention provides a control method of a hub motor driving all-terrain off-road vehicle power system. According to the method, a hybrid power system is used, electric generation modes of an electric generator are divided into conventional power requirements under running of a common road condition and high-power requirements of an off-road condition according to power requirements of an off-road vehicle under different road conditions, the power requirements are judged through an accelerator pedal opening threshold value, a fixed-point cycling electric generation mode is used under the conventional power requirements, and an adaptive electric generation mode is used under the high-power requirements. The method combines the advantages that direct driving power of a motor is high, and driving dynamic of a power-type traction battery is rapid in response. The method overcomes the shortcomings that the performances and the service life of the battery are affected as a small-capacity power-type traction battery is rapidly charged and discharged, and the awkward situation of wild energy supply difficulty of the off-road vehicle is avoided.

Description

technical field [0001] The invention belongs to the technical field of new energy vehicles, and in particular relates to a power system and a control method for an all-road off-road vehicle driven by a hub motor. Background technique [0002] As people pay more attention to environmental resources, the development of new energy vehicles has become an unstoppable trend. The state has introduced a series of preferential policies to encourage enterprises to develop new energy vehicles and consumers to purchase new energy vehicles. New energy vehicles have a bright future. [0003] At present, enterprises' research and development of new energy vehicles focus on ordinary family cars and commuter buses. Because this type of vehicle has a fixed energy supply infrastructure, the economy of vehicle driving is considered. Generally, pure electric vehicles are used, or a combination of a small engine and a generator is equipped with a large power battery, which is limited to the curr...

AI Technical Summary

Problems solved by technology

Generally, pure electric vehicles are used, or a combination of a small engine and a generator is equipped with a large power battery, which is limited to the current technical level. The current power battery is high in price, large in size, heavy in weight, and low in energy density. characteristics, and it is difficult for off-road vehicles to supply energy in the field

Therefore, conventional hybrid systems cannot meet the needs of hybrid off-road vehicles in all road conditions.

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