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Three-motor vehicle power system and control method and device thereof

A power system and three-motor technology, applied in the direction of control devices, electric vehicles, control drives, etc., can solve the problems of affecting drivability, double-gear power interruption, and single-gear economic optimization space is not large, so as to improve power performance , avoid power interruption, improve the effect of economy

Active Publication Date: 2019-07-16
SAIC MOTOR
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Problems solved by technology

[0004] In view of this, the present invention provides a three-motor vehicle power system and its control method and device to solve the problem that the single-gear economic optimization space is not large, and the power interruption caused by double-gear, thus affecting the drivability

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Embodiment Construction

[0065] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative work all belong to the protection scope of the present invention.

[0066] The embodiment of the present invention provides a three-motor vehicle power system, the three-motor vehicle power system includes: a first motor 10 and a second motor 20 respectively arranged on one of the front and rear axles, and arranged on the other axle of the front and rear axles The third motor 30, the first gear set 40 connected with the first motor 10, the second motor input shaft gear set 50 connected with the second motor 20, the contro...

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Abstract

The invention provides a three-motor vehicle power system and a control method and device thereof. The three-motor vehicle power system comprises a first motor, a second motor and a third motor, wherein the first motor and the second motor are arranged on one axle of a front axle and a rear axle, and the third motor is arranged on the other axle. As the first motor and the third motor can realizecommon drive with the second motor, the power interruption problem when the second motor shifts is further solved; compared with single motor drive, multi-motor combined drive improves the dynamic performance of a vehicle; and finally, a synchronizer is selectively combined with one of gear sets of a second motor input shaft according to the instruction of a controller, and a clutch is further turned on or off according to the instruction of the controller, so that the optimal torque distribution among three motors is realized, and the economy is improved.

Description

technical field [0001] The present invention relates to the technical field of pure electric vehicles, and more specifically, relates to a three-motor vehicle power system and a control method and device thereof. Background technique [0002] At present, most pure electric vehicles are driven by a single motor combined with a transmission power system with one or two gears. [0003] At present, the peak torque and power characteristics of a single motor directly limit the dynamic performance of pure electric vehicles; the single-gear transmission system can only transmit one transmission ratio, so there is not much room for vehicle economic optimization, and the two-gear transmission system Although the transmission system has the possibility of optimizing the power and economy of the system, it will cause problems such as power interruption, which will affect the drivability. Contents of the invention [0004] In view of this, the present invention provides a three-motor...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B60L50/60B60L15/20B60K17/04
CPCB60L15/20B60K17/04B60L50/50Y02T10/72Y02T10/70
Inventor 朱军冷宏祥李雯孙俊谷靖杜建
Owner SAIC MOTOR
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