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Power driving device of double motors and torque distribution control method thereof

A power-driven, dual-motor technology, applied in electric vehicles, control drives, control devices, etc., can solve the problem of single operation mode, inability to achieve single-motor braking energy recovery and dual-motor braking energy recovery, and inability to effectively extend electric vehicles. battery life and other issues, to achieve the effect of improving economy and improving response speed

Active Publication Date: 2019-03-19
NANJING YUEBO ELECTRIC DRIVE SYST CO LTD
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The disadvantages of the above-mentioned prior art are: the single-motor braking energy recovery and dual-motor braking energy recovery cannot be realized, the operating mode is single, and the battery life of the electric vehicle cannot be effectively extended.

Method used

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  • Power driving device of double motors and torque distribution control method thereof
  • Power driving device of double motors and torque distribution control method thereof
  • Power driving device of double motors and torque distribution control method thereof

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Embodiment Construction

[0028] The specific implementation manners of the present invention will be described in further detail below in conjunction with the accompanying drawings.

[0029] Such as figure 1 As shown, the power drive device of the present invention includes a double planetary row 17, a main motor 1, an auxiliary motor 2, a main input shaft 3, an auxiliary input shaft 4, an output shaft 5 and several clutches, wherein the main motor 1 passes through the main input Shaft 3 is connected to the double planetary row 17, and the auxiliary motor 2 is connected to the double planetary row 17 through the auxiliary input shaft 4. The double planetary row 17 adopts a Simpson structure, the seventh clutch 13 is connected to the planetary carrier of the double planetary row 17, and the eighth Clutch 14 is connected on the sun gear of double planetary row 17, first locker 15 and second lockup device 16 are arranged on the ring gear of double planetary row 17, first clutch 7, second clutch 8, third ...

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Abstract

The invention relates to a power driving device of double motors and a torque distribution control method thereof. Motor working points are adjusted according to the power needed by a vehicle, energymanagement is reasonably executed, meanwhile single-motor braking energy recovery and double-more braking energy recovery can be achieved under different braking power, and the economic efficiency ofthe vehicle is improved. The minimum power evaluation index is proposed according to double-motor coupling characteristics to serve as an evaluation criterion of vehicle mode switching, and the two motors work at the best working points according to vehicle-needed power adjusting working modes and give consideration to the power and economic efficiency of the vehicle. The corresponding process isaccelerated in the whole vehicle control process, the corresponding powers in all modes and the rotation speeds and torques of the motors are calculated according to the characteristics of the main motor and the auxiliary motor, the data is stored in a storage unit in a form way, the corresponding working modes are quickly identified in a table lookup way in actual operation of the vehicle, and the response speed of the whole vehicle is improved.

Description

technical field [0001] The invention relates to the technical field of electric vehicles, in particular to a dual-motor power drive device and a torque distribution control method thereof. Background technique [0002] With the intensification of the global energy crisis and the general improvement of environmental protection awareness, pure electric vehicles have broad development prospects as zero-emission vehicles. However, limited by factors such as cruising range and vehicle price, the actual promotion of pure electric vehicles still faces huge challenges. [0003] In order to improve the cruising range of the vehicle, the present invention adopts a dual-motor single-axis drive system. According to different working conditions of the vehicle, four modes of independent drive of the main motor, independent drive of the auxiliary motor, dual-motor speed coupling drive and dual-motor torque coupling drive can be selected to achieve high efficiency of the vehicle. Fast boot...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B60K17/02B60L15/20
CPCB60K17/02B60L15/20Y02T10/72
Inventor 李占江高超蒋元广李麟郝晓阳
Owner NANJING YUEBO ELECTRIC DRIVE SYST CO LTD
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