A kind of electric vehicle and its driving system

Abstract

An embodiment of the present invention provides an electric vehicle and its drive system, which is applied to an electric vehicle, including: a mechanical system, an electrical system, and a drive mode selection unit, and the drive mode selection unit is used to couple the driving mode with the auxiliary motor in the dual-motor independent driving mode Switching in the driving mode, including: when the rear driving wheels on both sides and the power required for driving the rear driving wheels are less than or equal to the motor on one side and the maximum power of the motor, the dual-motor independent driving mode is adopted, and, on both sides When the driving power required by the rear driving wheel and the rear driving wheel is greater than the maximum power of the single-side motor and the motor, the auxiliary motor coupling driving mode is adopted; the vehicle controller is used to control the corresponding different motors in the dual-motor independent driving mode. Electromagnetic clutches and electromagnetic clutch friction disc locking devices; in the driving mode of auxiliary motor coupling driving, control corresponding different electromagnetic clutches and electromagnetic clutch friction disc locking devices.

Description

technical field [0001] The invention relates to electric vehicle technology, in particular to an electric vehicle and its driving system. Background technique [0002] For an engine-driven car, the drive system relies on the power provided by the engine, and the power is transmitted to the wheels through the transmission, differential and half shafts. At present, most cars are driven by the front wheels, and the front wheels have a set of mechanical manipulation structures to make the front wheels produce a certain angle of rotation to achieve steering. However, such a system is due to the steering and driving of the front wheels, so the structure of the entire mechanical system is very complicated. At the same time, in today's increasingly severe energy environment, the range of use of traditional engines will be more and more limited, and people are looking for a cleaner, more environmentally friendly new energy source, so electric vehicles are getting more and more attent...

AI Technical Summary

Problems solved by technology

[0004] The existing technology has the following problems: For vehicles with high power requirements, vehicles driven independently by dual motors have higher requirements on the conditions of the motors on both sides, which greatly increases the production cost

4. The hub motor of the hub motor drives the car. The hub motor has disadvantages: the hub motor itself is heavy, the fault is high, and the maintenance is inconvenient. The hub must be disassembled before maintenance. The electronic components in the motor are easily damaged. , especially the waterproof protection at the bearing hole is more difficult, and the cost of the hub motor is higher, etc.

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