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Pure Electric Powertrain

A power system and pure electric technology, applied in the field of vehicle transmission system, can solve the problems of insufficient driving motor efficiency, inability to adjust the power system in real time, high cost of power battery, etc., and achieve shortened radial arrangement space and abundant axial space , Increase the effect of gear

Active Publication Date: 2018-11-13
昆山德拉特兰传动科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although this structure expands the adaptability of electric vehicles to a certain extent, the stepped speed regulation only relatively improves the efficiency of the power system, but it cannot make the power system adjust in real time to optimize the efficiency
At the same time, the multi-speed transmission has the problem of interruption of gear shifting power, which reduces the comfort of the vehicle
[0004] At the same time, due to the high cost of power batteries for pure electric vehicles, how to improve the efficiency of the electric power system is an urgent problem to be solved for electric vehicles
The Chinese patent with the patent document number CN201310672475.0 discloses a dual-motor-driven multi-gear electric power system scheme. Although the scheme adds some gears under driving conditions, the number of gears is still too small to improve the The efficiency of the drive motor is not obvious enough

Method used

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  • Pure Electric Powertrain
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  • Pure Electric Powertrain

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] Such as figure 1 As shown, a pure electric power system includes a first drive motor 10, a second drive motor 20, and a speed change device.

[0025] The speed change device includes a gearbox body 90 and a first input shaft 11 located in the gearbox body, a first clutch transmission unit and a third clutch transmission unit corresponding to the first input shaft, and a second input shaft 21. A second clutch transmission unit and a fourth clutch transmission unit corresponding to the second input shaft, a first intermediate shaft 31, a fifth clutch transmission unit and a sixth clutch transmission unit corresponding to the first intermediate shaft unit, the second countershaft 41, a seventh clutch transmission unit corresponding to the second countershaft, a second countershaft gear 45, and an output shaft 51.

[0026] The first clutch transmission unit includes a first driving gear 12, a first driven gear 32 meshed with the first driving gear 12, and a first driven ge...

Embodiment 2

[0107] Such as figure 2 As shown, this embodiment 2 includes some technical features in embodiment 1, the difference is that the second intermediate shaft, its seventh clutch transmission unit, and the second intermediate shaft gear are eliminated, and the second intermediate shaft 41 is eliminated in this technical solution. The power connection with the output shaft 51 will cause the power of the first intermediate shaft to switch from the output power of the fifth clutch transmission unit to the output shaft 51 to the output power of the sixth clutch transmission unit to the output shaft 51. Power interruption. Compared with the technical solution of Embodiment 1, the advantage of Embodiment 2 is that one intermediate shaft and two clutch transmission units can be reduced, which reduces the cost of the pure electric power system. Compared with the prior art, this Embodiment 2 is Under the premise of the same number of gear pairs, the gears of the whole vehicle are greatly ...

Embodiment 3

[0109] Such as image 3 As shown, this embodiment 3 includes some technical features in embodiment 2, the difference is that: the third clutch transmission unit and the fourth clutch transmission unit are cancelled, compared with the technical solution of embodiment 2, this embodiment 3 sacrifices Some gears have been increased, but compared with the prior art, this embodiment 3 greatly increases the gears of the whole vehicle under the premise of the same number of gear pairs.

[0110] In other embodiments of the present invention, the number of clutch transmission units can be set according to actual needs, and the number of gears can be increased or decreased according to the number of clutch transmission units; the input shaft synchronizer can be coaxially fixed on the first input shaft , can be engaged with the second input shaft and can be separated from the second input shaft; the first shaft-wheel synchronizer of the first clutch transmission unit can be coaxially fixe...

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Abstract

The invention discloses a pure electric power system. The pure electric power system comprises a first driving motor, a second driving motor and a speed changing device, wherein the speed changing device comprises a gearbox body, a first input shaft arranged in the gearbox body, a first clutch transmitting unit corresponding to the first input shaft, a third clutch transmitting unit corresponding to the first input shaft, a second input shaft, a second clutch transmitting unit corresponding to the second input shaft, a fourth clutch transmitting unit corresponding to the second input shaft, a first intermediate shaft, a fifth clutch transmitting unit corresponding to the first intermediate shaft, a sixth clutch transmitting unit corresponding to the first intermediate shaft, a second intermediate shaft, a seventh clutch transmitting unit corresponding to the second intermediate shaft, a second intermediate shaft gear corresponding to the second intermediate shaft, and an output shaft. According to the pure electric power system disclosed by the invention, a gear under each driving operating condition can be greatly raised, a power interruption phenomenon does not exist in the gear shifting process of all the gears, the problem of power interruption caused by great raise of the gear is solved, and discomfort caused by the power interruption during shifting of the gear is avoided.

Description

technical field [0001] The invention relates to vehicle transmission system technology, in particular to a pure electric power system. Background technique [0002] In the power system of a pure electric vehicle, since the motor itself has speed regulation performance, a single motor and a reducer are usually used to form an electric power system. This structure can only satisfy electric vehicles running on good roads. [0003] In order to expand the adaptability of pure electric vehicles, an electric power system consisting of a single motor and a multi-speed transmission has emerged. Although this structure expands the adaptability of electric vehicles to a certain extent, the stepped speed regulation only relatively improves the efficiency of the power system, but cannot make the power system adjust in real time to optimize the efficiency. At the same time, the multi-speed transmission has the problem of interruption of gear shifting power, which reduces the comfort of ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B60K1/02B60K17/06B60K17/28
Inventor 何祥延袁一卿张寅伍国强
Owner 昆山德拉特兰传动科技有限公司