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Multi-purpose adapted second-speed multi-mode continuously variable transmission power-by-wire integrated power system

A technology of continuously variable speed and power system, applied in the field of power system, can solve problems such as inability to realize stepless speed regulation of the engine, insufficient ability to start on a hill, and large application limitations, so as to improve the loadability of the whole vehicle and facilitate modularization The effect of design, high performance and price ratio

Active Publication Date: 2018-05-04
SHANGHAI JIAOTONG UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Aiming at the defects in the prior art, the purpose of the present invention is to provide a multi-purpose adaptable second-speed multi-mode continuously variable electric transmission integrated power system, which has better technical inheritance with existing vehicles and complete vehicle The characteristics of power, fuel economy and low emission, with continuously variable speed function, etc., have the characteristics of adapting to the requirements of all regions and multi-purpose applications, and solve the problems of insufficient driving force, insufficient hill start ability and large application limitations of existing similar technologies , the system is large in size and high in cost, unable to realize stepless speed regulation of the engine, and difficult to mass industrialize due to the difficulty in manufacturing electromechanical components. It has achieved high performance, low development cost, low system cost, strong adaptability, and easy scale industrialization organic combination

Method used

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  • Multi-purpose adapted second-speed multi-mode continuously variable transmission power-by-wire integrated power system
  • Multi-purpose adapted second-speed multi-mode continuously variable transmission power-by-wire integrated power system
  • Multi-purpose adapted second-speed multi-mode continuously variable transmission power-by-wire integrated power system

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Effect test

Embodiment 1

[0036] Such as figure 1 As shown, the multipurpose adaptable second-gear four-mode continuously variable speed hybrid hybrid power system (embodiment 1) of the present invention includes: an engine 1, a clutch 2, a first motor 3, a planetary gear train 4, a second motor 5, Shifting device 6, transmission chain 7, reduction differential 8, energy storage device 11 and motor control device 12, wherein, planetary gear train 4 comprises ring gear 41, planetary carrier 42, sun gear 43, the crankshaft output end of engine 1 Connected with the input end of clutch 2, the rotor of the first motor 3 is connected with the output end of clutch 2, the ring gear 41 of planetary gear train 4 respectively, the rotor of the second motor 5 is respectively connected with the sun gear 43, the planetary gear train, The input end 71 of the transmission chain 7 is connected, and the shift device 6 is connected with the input end of the reduction differential 8 to realize the power of the planet carr...

Embodiment 2

[0057] Such as Figure 5 As shown, the second embodiment is basically the same as the first embodiment, the difference is that the multi-purpose adaptable second-speed five-mode continuously variable transmission hybrid power system also includes braking The locking device 14, the brake locking device 14 is used to control the brake lock and brake lock release of the sun gear 43 of the planetary gear train 4, one end of the brake lock device 14 is connected to the planetary gear train 4 The sun gear 43 is either connected to the rotor of the second motor 5 or a component connected to the rotor of the second motor 5 , and the other end of the brake locking device 14 is connected to the housing. In the second embodiment, a hybrid power system control device is provided, including circuits such as signal sampling, information communication, command output control, power supply, calculation, diagnosis and protection, and circuits for controlling the engine 1, the motor control dev...

Embodiment 3

[0061] Such as Image 6 As shown, the third embodiment is realized by canceling the engine 1 , the clutch 2 and the connection between the clutch 2 and the first motor 3 in the first example. With the single-motor pure electric drive mode and the dual-motor pure electric drive mode in Embodiment 1, the beneficial effects are: (1) avoiding the long-term high-speed operation of the second motor 5, which can improve the reliability of the system; The coupling and stepless speed change of the gear train 4 can realize the optimization of the total operating efficiency of the first motor 3 and the second motor 5; (3) due to the switching of the second gear mode, the first motor 1 and the second motor 5 adopt smaller Torque, it can also achieve power equivalent to conventional cars. The third embodiment is provided with a pure electric drive control device, which is used for coordinated control of the motor control device 12, the energy storage device 11, and the shift device 6, as ...

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Abstract

The invention provides a multi-purpose adaptive second-gear multimode stepless speed changing electric transmission integrated power system. The multi-purpose adaptive second-gear multimode stepless speed changing electric transmission integrated power system comprises a first motor and the like; a planetary gear train comprises a gear ring, a planet carrier and a sun gear; the rotor of the first motor is connected with the gear ring of the planetary gear train; the rotor of the second motor is connected with the sun gear of the planetary gear train and the input end of a transmission chain, respectively; a gear shifting device is connected with the input end of a speed reducing differential mechanism and control on power transfer from the planet carrier of the planetary gear train and the output end of the transmission chain to the speed reducing differential mechanism is realized; the output end of the speed reducing differential mechanism is connected with two wheels by use of two half shafts; a motor control device is connected with an energy storage device to transfer electric energy; the motor control device is further connected with the first motor and the second motor, respectively, and outputs control instructions. The multi-purpose adaptive second-gear multimode stepless speed changing electric transmission integrated power system has the characteristics of better technical inheritance to the existing vehicles, whole vehicle dynamic property, fuel economy and low emission.

Description

technical field [0001] The invention relates to a power system, in particular to a multi-purpose adaptable second-speed multi-mode continuously variable transmission integrated power system. Background technique [0002] The electrification and hybridization of automobile power has become an inevitable trend. Compared with series hybrid system and parallel hybrid system, hybrid hybrid system has great performance advantages. However, the existing hybrid hybrid systems, such as the most representative THS (Toyota Hybrid System) hybrid system of Toyota Motor Corporation of Japan and its THS2 (second-generation Toyota Hybrid System) hybrid system, General Motors The company's EP (Electric Parallel) hybrid system and its AHS2 (Second Generation Advanced Hybrid System) system have complex power synthesis mechanisms and high manufacturing costs. [0003] A Chinese patent with the announcement number CN201021118Y, the announcement date of February 13, 2008, and the patent name "P...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B60K6/365B60K6/44
CPCY02T10/62
Inventor 杨林羌嘉曦
Owner SHANGHAI JIAOTONG UNIV
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