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Electric vehicle driving motor internally provided with differential and reducer assembly

A technology for electric vehicles and driving motors, applied in the direction of electric vehicles, motors, electric components, etc., can solve the problems of unfavorable driving needs of electric vehicles, low power density of the whole machine, low rated speed, etc., and achieve good chemical stability and thermal oxidation Stability, integrated cooling and lubrication, high insulation effect

Active Publication Date: 2014-03-12
SOUTH CHINA UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, since there is no deceleration function, when the motor is used for driving a car, only a motor with a low rated speed can be selected, resulting in a low power density of the whole machine, which is not conducive to the driving needs of electric vehicles.

Method used

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  • Electric vehicle driving motor internally provided with differential and reducer assembly
  • Electric vehicle driving motor internally provided with differential and reducer assembly
  • Electric vehicle driving motor internally provided with differential and reducer assembly

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] Such as figure 1 As shown, an electric vehicle drive motor with a built-in differential subtraction assembly includes a casing 12, an oil jacket 11, a motor stator 9, a motor rotor 8, a differential, a planetary reducer and a fuel tank 1; a motor stator 9, a motor rotor 8. The differential gear and the planetary reducer are arranged in the casing 12, and the oil jacket 11 is connected to the casing 12 inside the casing 12. An annular cavity is formed between the casing 12 and the oil jacket 11, and the fuel injection nozzle is set in the On the casing 12, the nozzle faces the annular cavity, and the oil tank 1 is arranged at the bottom of the casing 12; the differential includes a differential planet carrier 2, a first differential driven gear 3, a second differential driven gear Gear 18, the first differential gear output shaft 4, the second differential gear output shaft 17 and the differential drive gear 19; the planetary reducer includes the first planetary reducer ...

Embodiment 2

[0034] Such as figure 2 Shown is another embodiment of the invention. This embodiment uses a fixed shaft gear reducer without a planetary reducer. An electric vehicle drive motor with a built-in differential subtraction assembly, including a casing 12, an oil jacket 11, a motor stator 9, a motor rotor 8, a differential, a fixed shaft gear reducer, and an oil tank 1; a motor stator 9, and a motor rotor 8 , differential, and fixed-axis gear reducer are arranged in the casing 12, and the oil jacket 11 is connected with the casing 12 inside the casing 12, and an annular cavity is formed between the casing 12 and the oil jacket 11, and the fuel injection nozzle is set On the casing 12, the nozzle faces the annular cavity, and the oil tank 1 is arranged at the bottom of the casing 12; the motor rotor 8 is connected with the input gear 21 of the fixed shaft gear reducer through a spline, and the input gear 21 is connected with the first intermediate gear 22 meshing, the first inte...

Embodiment 3

[0038] Such as image 3 Shown is a third embodiment of the invention. This embodiment is a simplification of Embodiment 1. Wherein the driving motor is only integrated with a reducer, so this embodiment only has the functions of driving and deceleration and does not have the function of differential speed. Such as image 3 Shown, a kind of electric vehicle driving motor comprises casing 12, oil jacket 11, motor stator 9, motor rotor 8, speed reducer and oil tank 1; Motor stator 9, motor rotor 8 and speed reducer are arranged in casing 12, The oil jacket 11 is connected to the casing 12 inside the casing 12, and an annular cavity is formed between the casing 12 and the oil casing 11. The fuel injection nozzle is arranged on the casing 12, and the nozzle faces the annular cavity, and the oil tank 1 is arranged on the The bottom of the casing 12; the motor rotor 8 is connected to the inner rotor shaft 20, the inner rotor shaft 20 is connected to the sun gear 5 of the planetary...

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Abstract

The invention relate to an electric vehicle driving motor internally provided with a differential and reducer assembly. The electric vehicle driving motor comprises a driving motor, a differential and a planet gear or fixed shaft gear reducer; a motor stator, a motor rotor, the differential and the planet gear or fixed shaft gear reducer are arranged in an enclosure; the differential is embedded in the motor rotor; left and right output shafts of the differential are respectively connected with a planet reducer arranged in the motor, or the motor rotor is connected with the fixed shaft gear reducer, and the differential is used for outputting motor power towards two sides. The electric vehicle driving motor internally provided with the differential and reducer assembly integrates driving, speed reducing and differential speed functions, and selected insulation engine oil can lubricate rolling bearing or a sliding bearing in the motor or a reducer gear, so the integration of cooling and lubricating of the motor power assembly is realized. The electric vehicle driving motor internally provided with the differential and reducer assembly has the advantages of compact structure, high power density, good lubricating and cooling effects and the like.

Description

technical field [0001] The invention relates to an electric vehicle drive motor, in particular to an electric vehicle drive motor with a built-in differential subtraction assembly. Background technique [0002] As the world's energy shortage and environmental pollution problems are becoming more and more serious, people pay more and more attention to electric vehicles with low energy consumption and no pollution. Because electric vehicles have low fuel consumption and low emissions, they are very suitable for urban transportation and have a very obvious positive effect on protecting the environment and saving energy. Therefore, domestic and foreign automobile companies and major universities are actively researching electric vehicle technology. [0003] Since electric vehicles need to start and stop frequently, the overload performance and dynamic response performance of the drive motor are required to be high, and because a large number of battery packs are installed, the t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02K7/116H02K9/19
CPCY02T10/641Y02T10/64
Inventor 罗玉涛
Owner SOUTH CHINA UNIV OF TECH
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