Three-motor combination drive type truck and power system parameter matching method

Abstract

The invention relates to a three-motor hybrid drive truck and a power system parameter matching method. The three-motor hybrid drive truck is composed of a first drive motor, a first input shaft, a first reducer, a first output shaft, a vehicle front axle, a second input shaft, a second drive motor, a first power battery, a second The power battery, the third drive motor, the third input shaft, the rear axle of the vehicle, the second output shaft, the second reducer, the third power battery, the controller and the fourth power battery are assembled and constituted; the parameter matching of the power system in the present invention In the process, the parameter matching method of the first drive motor, the second drive motor, the third drive motor and the reducer of the three-motor hybrid drive truck is given, which provides a theoretical basis for the development of the power system of the three-motor hybrid drive truck. . The invention can reduce the capacity of the driving motor, the difficulty of motor manufacture, and reduce the cost, and at the same time, through the reasonable matching of the powers of the three motors, the power and economy of the whole vehicle can be significantly improved.

Description

technical field [0001] The invention belongs to the field of automobile power systems, and in particular relates to a three-motor hybrid drive truck and a power system parameter matching method. Background technique [0002] In order to solve the energy and environmental crisis, electric vehicles have become a research hotspot in the world's automobile industry. As an important part of the automobile industry, the electrification of trucks will make outstanding contributions to solving energy and environmental problems. [0003] At present, electric trucks are mainly driven by a single motor. Compared with passenger cars, electric trucks have the characteristics of heavy load, high wind resistance coefficient, large differences in power requirements between no-load and full-load, and low-speed and high-speed. Driven by a motor, under low-speed and no-load conditions, there will be a phenomenon of large horse-drawn carts and low energy utilization efficiency. [0004] Elect...

AI Technical Summary

Problems solved by technology

[0004] Electric trucks require huge driving power under full load and high speed conditions, so the driving motor power of single-motor-driven electric trucks will be very large, and high-power driving motors and controllers generally require water-cooling mechanisms, and the manufacturing process is complicated , high production cost

[0005] Electric trucks have heavy loads, and under deceleration and braking conditions, the recoverable energy is relatively large, and the single-motor drive scheme cannot fully recover braking energy

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