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Commercial Vehicle Series-Parallel Hybrid Transmission

A kind of transmission device and hybrid power technology, which is applied in the direction of power device, hybrid vehicle, pneumatic power device, etc., can solve the problems that are not conducive to the power density of the generator, there is no speed-up and speed-down mechanism, and the degree of system integration is not high, so as to achieve It is conducive to the effect of simple layout, structure and process, and high transmission efficiency

Active Publication Date: 2019-08-23
BEIJING INSTITUTE OF TECHNOLOGYGY
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] CN 100406289C discloses a series-parallel hybrid power system. Two motors are coaxially arranged, and the switching between series-parallel working conditions can be realized through two clutches. The two clutches are arranged between the generator, the motor and the gearbox. The system The traditional gearbox is used, and the structure is more complicated
[0004] CN 104590248A discloses a control method based on a series-parallel hybrid system. The series-parallel hybrid system is similar to CN 100406289C. Two clutches are used to switch between series and parallel working conditions, and the motor and generator have no speed-up and speed-down mechanisms. , which is not conducive to effectively improving the power density of the generator and reducing the torque of the motor, and the torque is amplified through a separate gearbox, and the degree of system integration is not high

Method used

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  • Commercial Vehicle Series-Parallel Hybrid Transmission
  • Commercial Vehicle Series-Parallel Hybrid Transmission
  • Commercial Vehicle Series-Parallel Hybrid Transmission

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Experimental program
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Effect test

Embodiment 1

[0032] This embodiment provides a series-parallel hybrid power transmission suitable for commercial vehicles. The transmission only uses one clutch to realize switching between series and parallel working conditions, and is equipped with a speed-up and speed-down mechanism, which can effectively increase the power density of the generator And reduce the torque of the motor, and the overall structure is relatively simple, which is convenient for the power system layout of commercial vehicles.

[0033] like figure 1 As shown, it includes: input shaft 1, speed-increasing planetary row, generator 5, motor 7, clutch 6, decelerating planetary row, first decelerating planetary row and output shaft 16.

[0034] Wherein, the speed-up planetary row is arranged on the side where the generator 5 is located, the first decelerating planetary row is arranged on the side where the motor 7 is located, and the clutch 6 is located between the generator 5 and the motor 7. The speed planetary pla...

Embodiment 2

[0038] like Figure 4 As shown, the difference from Embodiment 1 is that a reduction planetary row is added to the transmission device, that is, the second reduction planetary row to form two gears, which can greatly reduce the torque and power requirements of the motor 7 .

[0039]The connection relationship is: on the basis of the first embodiment above, the second deceleration planetary gear sun gear 14 is connected to the first deceleration planetary gear ring gear 8, the second deceleration planetary gear ring gear 15 is connected to the output shaft 16, and the second deceleration planetary gear ring gear 15 is connected to the output shaft 16. The planetary carrier 13 is connected to the first brake 12 , and the first reduction planetary ring gear 8 is connected to the second brake 11 .

[0040] The series working condition of the transmission includes low gear and high gear. When the clutch 6 is disengaged, the first brake 12 is engaged, and the second brake 11 is dise...

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Abstract

The invention discloses a serial-parallel hybrid power drive device of a commercial vehicle. Only one clutch is arranged to achieve serial-parallel working condition switching, the speed increase of a generator is achieved through a speed increase planet row, the speed reduction and torque increase of a motor are achieved through a speed reduction planet row, and both the structure and the process are simple, which facilitates the layout of a power system of the commercial vehicle. The drive device specifically comprises an input shaft, the speed increase planet row, the generator, the motor, the clutch, the speed reduction planet row and an output shaft. In the drive device, pure electric drive or serial hybrid power drive is adopted for the start, low speed and medium speed working conditions; under the serial hybrid power working condition, the motor drives the generator to generate power through the speed increase planet row, the generator can work in an economical fuel consumption section at the moment, and redundant electric energy can be stored in a battery pack for pure electric running of the motor; under the high-speed parallel working condition, the clutch is engaged, power of the motor directly drives the vehicle to run, one time of energy conversion is omitted, and the drive efficiency is improved.

Description

technical field [0001] The invention relates to a power transmission device, in particular to a series-parallel hybrid power transmission device, which belongs to the technical field of power transmission. Background technique [0002] Hybrid transmission technology is an important means of energy saving and emission reduction, and major automobile manufacturers are actively developing it. Toyota's THS hybrid technology has a good fuel-saving effect. The planetary mechanism is used for power splitting to ensure that the engine always works in the economical range, but the planetary mechanism has higher requirements. The hybrid power system in series form can ensure that the engine works in the economical range, which is suitable for frequent start and stop, severe load changes, urban driving and other working conditions; but for high-speed stable working conditions, due to one more energy conversion, the efficiency is low. The parallel hybrid power system is suitable for hi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B60K6/365B60K6/445
CPCB60K6/365B60K6/445Y02T10/62Y02T10/92
Inventor 彭增雄胡纪滨魏超李学良
Owner BEIJING INSTITUTE OF TECHNOLOGYGY
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