Electric automobile power system

Abstract

The invention discloses an electric automobile power system which is applied to an electric automobile. The electric automobile comprises an upper structure system; the electric automobile power system comprises a first driving system, a second driving system, a gearbox, a power takeoff and a vehicle controller; the first driving system and the second driving system are used for converting electric energy into mechanical energy to provide power to the electric automobile; the first driving system comprises a first motor and a first motor controller; the second driving system comprises a secondmotor and a second motor controller; the gearbox is respectively connected with the first motor and the second motor; output powers of the first motor and the second motor are combined through the gearbox; the power takeoff is connected with the gearbox and the upper structure system to provide power to the upper structure system; the vehicle controller is respectively connected with the first motor controller and the second motor controller; and the vehicle controller is used for controlling working modes of the first driving system and the second driving system.

Description

【Technical field】 [0001] The invention relates to the technical field of electric vehicles, in particular to an electric vehicle power system. 【Background technique】 [0002] At present, the commonly used electric vehicle drive system mainly adopts single-motor direct drive or single-motor matching gearbox drive. The direct drive of a single motor is difficult to meet the large climbing requirements of the vehicle, and at the same time, the system efficiency is low when the output is low-speed and high-torque; while the single-motor matching gearbox can meet the advantages of climbing, but under the current technical conditions, changing The shifting time is relatively long, and at the same time, power interruption may occur during the shifting process, which will cause a great safety hazard to driving. At present, the chassis of most of the pure electric vehicles on the market is only to replace the power system on the chassis of the traditional fuel vehicle. Single, shor...

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Problems solved by technology

[0004] The purpose of the present invention is to provide an electric vehicle power system, which can not only solve the problem of insufficient climbing ability of a single motor and low efficiency at low speed, but also solve the problem of unstable shifting of a gearbox matched with a single motor, and can also be used for bodywork systems provide power

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