Dual-motor stepless variable speed vehicle power system

A continuously variable speed, power system technology, applied in electric power units, power units, vehicle components, etc., can solve the problem that the high-speed drive motor is not high enough at high speed, the transmission ratio is small, and the high-speed drive motor and low-speed drive motor work efficiency is low, etc. question

Inactive Publication Date: 2017-06-20

CHONGQING TSINGSHAN IND

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AI-Extracted Technical Summary

Problems solved by technology

At present, the common dual-motor continuously variable transmission vehicle power system includes a high-speed drive motor, a low-speed drive motor and the first planetary row, which can realize stepless transmission. Small, so ...

Abstract

The invention discloses a dual-motor stepless variable speed vehicle power system with high working efficiency. The dual-motor stepless variable speed vehicle power system with the high working efficiency comprises a high-speed driving motor which comprises a high-speed motor shaft, low-speed driving motors which comprise low-speed motor rotors and an output shaft, and the right end of the high-speed motor shaft of the high-speed driving motor is fixedly connected to a first sun wheel of a first planetary row. The dual-motor stepless variable speed vehicle power system with the high working efficiency is characterized by further comprising an outer ring and a second planetary row, wherein a second sun wheel of the second planetary row is located in a second planetary carrier, a second planetary wheel of the second planetary row is rotatably installed on the second planetary carrier, a second gear ring of the second planetary row is located outside the second planetary carrier, a first planetary carrier of the first planetary row is fixedly connected to the second sun wheel of the second planetary row, the left end of the outer ring is fixedly connected to a first gear ring of the first planetary row, the right end of the outer ring is fixedly connected to the second gear ring of the second planetary row, the outer side of the outer ring is fixedly connected to the low-speed motor rotors of the low-speed driving motors, and the right end of the second planetary carrier of the second planetary row is fixedly connected to the output shaft.

Application Domain

Electric propulsion mountingControl devices

Technology Topic

Drive motorAutomotive engineering +3

Image

Examples

Experimental program(1)

Example Embodiment

[0008] The preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0009] See figure 1 , The dual-motor continuously variable speed automobile power system of the present invention includes a high-speed drive motor 1 containing a high-speed motor shaft 2, a low-speed drive motor 12 containing a low-speed motor rotor 121, and an output shaft 13, and its first sun gear 3 is located at the first In the planet carrier 5, the first planetary wheel 4 is rotatably mounted on the first planet carrier 5, and the first ring gear 6 is located outside the first planetary row of the first planet carrier 5. The high-speed drive motor 1 is The right end of the motor shaft 2 is fixedly connected with the first sun gear 3 of the first planetary row. by figure 1 It can be seen that the present invention also includes an outer ring 11, and its second sun gear 7 is located in the second planet carrier 9, the second planet gear 8 is rotatably mounted on the second planet carrier 9, and the second ring gear 10 is located in the The second planetary row other than the second planet carrier 9, the first planetary carrier 5 of the first planetary row is fixedly connected to the second sun gear 7 of the second planetary row, and the left end of the outer ring 11 is connected to the first planetary row The first ring gear 6 is fixedly connected, the right end is fixedly connected to the second ring gear 10 of the second planetary row, and the outer side is fixedly connected to the low-speed motor rotor 121 of the low-speed drive motor 12. The second planet carrier 9 of the second planetary row The right end is fixedly connected with the output shaft 13.

[0010] The high-speed drive motor 1 is a high-speed low-torque motor.

[0011] The low-speed drive motor 12 is a low-speed high-torque motor.

[0012] The content that is not described in detail in the present invention includes that the high-speed drive motor 1 is a high-speed low-torque motor and the low-speed drive motor 12 is a low-speed high-torque motor. The high-speed low-torque motor and the low-speed high-torque motor can be common high-speed low-torque types in the market. Motors and low-speed high-torque motors.

[0013] The working principle of the present invention is as follows;

[0014] The high-speed drive motor 1 works, and the low-speed drive motor 12 works; the high-speed drive motor 1 transmits power to the first sun gear 3 of the first planetary row through the high-speed motor shaft 2, and the low-speed motor rotor 121 of the low-speed drive motor 12 passes through the outer ring 11. The power is simultaneously transmitted to the first ring gear 6 of the first planetary row and the second ring gear 10 of the second planetary row. The power of the high-speed drive motor 1 and the low-speed drive motor 12 are coupled through the first planetary row and the second planetary row. Finally, the second planet carrier 9 of the second planetary row is transferred to the output shaft 13.

[0015] The preferred embodiments of the present invention are described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the above-mentioned embodiments, and within the scope of knowledge possessed by a person of ordinary skill in the art, it may also be possible without departing from the purpose of the present invention. Make various changes.

PUM

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