Compact double-motor driving system and driving method

A dual-motor drive, compact technology, applied in the direction of electric vehicles, control drives, electric power devices, etc., can solve the problem of single-speed gearboxes that are difficult to balance power, efficiency, maximum speed, high gearbox cost, and layout space Large and other problems, to achieve the effect of flexible and efficient vehicle torque transmission, light weight of the vehicle body, and saving development costs

Pending Publication Date: 2019-03-15
上海伊控动力系统有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, it is difficult for a single-speed gearbox to meet the requirements of power, efficiency, and maximum speed.
At the same time, the cost of the two-speed gearbox is high, the structure is complex, the layout space is large, and it takes up space

Method used

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  • Compact double-motor driving system and driving method
  • Compact double-motor driving system and driving method
  • Compact double-motor driving system and driving method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0043] A compact dual motor drive system such as figure 1 As shown, it includes a drive housing 1, and the dual-motor drive system includes a first power module, a second power module and a one-way clutch 7;

[0044] The first power module includes a first drive motor 2 , a first input shaft 21 and a planetary gear train 3 , the first drive motor is splined to the first input shaft, and the planetary gear train includes a ring gear 31 , a planetary gear 32, a sun gear 33 and a planet carrier 34, the ring gear is fixedly connected to the drive housing, and the sun gear is arranged on the first input shaft;

[0045] The second power module includes a second drive motor 4, a second input shaft 41, a final reduction input gear 5 and a final reduction output gear 6, the second drive motor is splined to the second input shaft, and the The main reduction input gear is arranged on the second input shaft, and the main reduction output gear meshes with the main reduction input gear;

...

Embodiment 2

[0051] The present invention also provides a dual-motor driving method, such as Figure 2-Figure 4 shown, including the following steps:

[0052] S1. During the starting phase of the vehicle, the first drive motor and the second drive motor output torque at the same time, and the first drive motor transmits the torque to the one-way clutch through the planetary gear train, and then transmits the torque to the one-way clutch transmitted to the second input shaft, torque transmission is illustrated as image 3 as shown, image 3 The middle arrow is the direction of torque transmission;

[0053] S2, the maximum power stage of the vehicle, the torque of the first driving motor and the torque of the second driving motor are superimposed through the second input shaft and are jointly transmitted to the differential through the final reduction input gear , and then drive the vehicle wheel to roll with maximum power;

[0054]S3. In the high-speed stage of the vehicle, the actual s...

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Abstract

The invention discloses a compact double-motor driving system which comprises a first power module, a second power module and a one-way clutch; the first power module comprises a first driving motor,a first input shaft and a planetary gear train; the second power module comprises a second driving motor, a second input shaft, a main speed reduction input gear and a main speed reduction output gear; the double-motor driving system also comprises a differential mechanism; a driving method applied to the double-motor driving system is included. According to the compact double-motor driving systemand driving method, the requirements of vehicle dynamic performance, maximum vehicle speed and the like can be considered, meanwhile, the arrangement space is smaller, the space utilization rate is higher, the weight of the vehicle body is lighter, the transmission efficiency of the power system is higher, and the market application prospect is wide.

Description

technical field [0001] The invention relates to the field of motor drive system design, in particular to a compact dual-motor drive system and a drive method. Background technique [0002] Existing pure electric vehicles basically use a single-motor drive system, and a few use a dual-motor drive system, but the function and structure of the existing dual-motor drive system are relatively simple, and the dual-motor drive system basically uses a single-speed gearbox. [0003] Because the dual-motor drive system uses a single-speed reduction box, the gear ratio is fixed. If you need to improve power, you need to increase the speed ratio; if you need to increase the top speed, you need to reduce the speed ratio. Therefore, it is difficult for a single-gear gearbox to meet the requirements of power, efficiency, and maximum speed. At the same time, the cost of the two-speed gearbox is high, the structure is complex, and the layout space is relatively large, occupying space. Co...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B60K1/02B60K17/02B60K17/04B60K17/16B60L15/20
CPCB60K1/02B60K17/02B60K17/046B60K17/16B60L15/2054B60L2240/423B60L2240/421B60Y2400/427B60Y2400/73Y02T10/72
Inventor 朱雷房超杨守银吴四军周用华薛刚段仁仕樊晓虹张英伦
Owner 上海伊控动力系统有限公司
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