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Vehicle power transmission system and vehicle comprising same

A power transmission system and vehicle technology, applied in the field of the power transmission system and vehicles with the same, can solve the problems of low transmission efficiency, bulky, complex control strategies, etc., and achieve the effects of reducing emissions and improving fuel economy.

Active Publication Date: 2015-01-14
BYD CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, in the related technologies known to the inventor, the power transmission system in a hybrid electric vehicle is generally complex in structure, bulky, and low in transmission efficiency. complex strategy

Method used

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  • Vehicle power transmission system and vehicle comprising same
  • Vehicle power transmission system and vehicle comprising same
  • Vehicle power transmission system and vehicle comprising same

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0152] Such as figure 2 As shown, the engine unit 1 is connected to the input end 313 of the double clutch 31, the first output end 311 of the double clutch 31 is connected to the first input shaft 21, and the second output end 312 of the double clutch 31 is connected to the second input shaft 22, The second input shaft 22 is coaxially sleeved on the first input shaft 21 .

[0153] A driving gear 25 is fixedly arranged on the first input shaft 21 and the second input shaft 22 respectively, and the first motor generator 41 is indirectly driven with the driving gear 25 on the second input shaft 22 through an intermediate gear 411 . Two driven gears 26 are fixedly arranged on the output shaft 24 , and the two driven gears 26 respectively mesh with the driving gears 25 on the first input shaft 21 and the second input shaft 22 to form two transmission gears.

[0154] The synchronizer 6 is arranged on the output shaft 24, and the driving gear of the main reducer (that is, the outp...

Embodiment 2

[0182] Such as image 3 As shown, the power transmission system 100 in this embodiment and figure 2 The difference of the power transmission system 100 in the above may only lie in the arrangement form of the third motor generator 43 . In this embodiment, each third motor-generator 43 drives the corresponding rear wheel 220 through a second speed change mechanism 72, and the remaining parts can be connected with figure 2 The power transmission system 100 in the embodiment is basically the same, and will not be repeated here. As for the specific working conditions, it is related to figure 2 The power transmission system 100 in the embodiment is basically the same, and the only difference is that the power transmission between the third motor generator 43 and the corresponding rear wheel 220 needs to go through the second transmission mechanism 72 , which will not be described in detail here.

Embodiment 3

[0184] Such as Figure 4 As shown, the power transmission system 100 in this embodiment and figure 2 The difference of the power transmission system 100 in the above may only lie in the arrangement form of the third motor generator 43 . In this embodiment, the third motor-generator 43 is one and drives the corresponding rear wheel 220 through a first speed change mechanism 71, and the remaining parts can be connected with figure 2 The power transmission system 100 in the embodiment is basically the same, and will not be repeated here. As for the specific working conditions, it is related to figure 2 The power transmission system 100 in the embodiment is basically the same, and the only difference is that the two rear wheels 220 are driven by a third motor-generator 43 and a first transmission mechanism 71, so without adding new components, only The differential function of the two rear wheels 220 cannot be realized by a motor and a transmission mechanism, but it can be u...

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PUM

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Abstract

The invention discloses a vehicle power transmission system and a vehicle comprising the same. The power transmission system comprises an engine unit, a transmission unit, a first electric motor generator, an output portion, a power switching device and a second electric motor generator; the transmission unit is suitable for being selectively in dynamic coupling connection with the engine unit; the first electric motor generator is in dynamic coupling connection with the transmission unit; the output portion is constructed to transmit power output from the transmission unit to front wheels and / or rear wheels of the vehicle; the power switching device is suitable for transmitting power or disconnecting power transmission between the transmission unit and the output portion; the second electric motor generator is used for driving the front wheels or the rear wheels. The power transmission system of the embodiment of the invention has three power output sources of the engine unit, the first electric motor generator and the second electric motor generator and multiple driving modes and is high in efficiency.

Description

technical field [0001] The invention relates to the technical field of vehicles, in particular to a power transmission system for a vehicle and a vehicle with the same. Background technique [0002] With the continuous consumption of energy, the development and utilization of new energy vehicles has gradually become a trend. As one of the new energy vehicles, a hybrid vehicle is driven by an engine and / or an electric motor, and has multiple modes, which can improve transmission efficiency and fuel economy. [0003] However, in the related technologies known to the inventor, the power transmission system in a hybrid electric vehicle is generally complex in structure, bulky, and low in transmission efficiency. Strategies are complex. Contents of the invention [0004] The present invention aims to solve one of the above-mentioned technical problems in the prior art at least to a certain extent. [0005] Therefore, the present invention needs to provide a power transmissio...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B60K6/36B60K6/38
Inventor 杨冬生廉玉波张金涛罗红斌
Owner BYD CO LTD
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