Hybrid electric vehicle power driving system based on double planetary lines

A hybrid vehicle and dual planetary technology, which is applied in the arrangement of multiple different prime movers of power units, general power units, and pneumatic power units, etc., can solve the problem of poor fuel economy, insufficient power performance, and system Efficiency decline and other problems, to achieve the effect of improving fuel economy, reducing system cost and improving power performance

Inactive Publication Date: 2018-07-27
CHONGQING UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The existing power-split hybrid drive system based on the planetary gear mechanism, in the E-CVT hybrid drive mode, if only the input power split mode is used, it is only suitable for low-speed driving conditions, and the efficiency of high-speed conditions decreases. Due to the serious electric power cycle phenomenon in the system at high speed, the system efficiency decreases, the fuel economy of the vehicle is poor and the power performance is insufficient

Method used

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  • Hybrid electric vehicle power driving system based on double planetary lines
  • Hybrid electric vehicle power driving system based on double planetary lines
  • Hybrid electric vehicle power driving system based on double planetary lines

Examples

Experimental program
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Embodiment 1

[0042] Such as figure 1 As shown, the hybrid electric vehicle power drive system based on the double planetary row provided by the present invention is characterized in that the system includes: a power output device, a brake, a power source, a first planetary row drive device, a second planetary row drive device and controller. The power source wherein comprises a first power source 1, a second power source 13 and a third power source 14, the first power source is preferably an engine, the second power source and the third power source adopt motors, and the second power source is hereinafter referred to as The motor 1 , the third power source is the motor 2 , and the brakes include a first brake 3 and a second brake 15 .

[0043] The first planetary row driving device adopted in the present invention includes a first sun gear 22, a first ring gear 6, a first planet carrier 4, and a first planetary gear 5 meshed with the first sun gear 22 and the first ring gear 6; The first...

Embodiment 2

[0057] Such as figure 2 As shown, on the basis of Embodiment 1, the first clutch 25 is added, that is, the second ring gear 7 forms a clutch connection with the fourth drive shaft 21 through the first clutch 25, and the controller controls the first brake 3, the second brake 15 and The first clutch 25 is controlled individually or in combination. The control system is in pure electric mode, input power split mode, compound power split mode and parallel hybrid drive mode. The specific typical working modes are shown in Table 2.

[0058] Table 2 Correspondence figure 2 typical working mode

[0059]

[0060] Note: 0 means that the clutch or brake is disengaged or unlocked, and 1 means that the clutch or brake is engaged or braked. B1, B2, and CL1 denote a first brake, a second brake, and a first clutch, respectively.

Embodiment 3

[0062] Such as image 3 As shown, the second clutch 26 is added on the basis of Embodiment 2, that is, the first ring gear 6 forms a clutch connection with the second planet carrier 9 through the second clutch 26, and the controller controls the first brake 3, the second brake 15, The first clutch 25 and the second clutch 26 are controlled independently or in combination. The control system is in pure electric mode, input power split mode, compound power split mode and parallel hybrid drive mode. The specific typical working modes are shown in Table 3.

[0063] Table 3 Correspondence image 3 typical working mode

[0064]

[0065] Note: 0 means that the clutch or brake is disengaged or unlocked, and 1 means that the clutch or brake is engaged or braked. B1, B2, CL1, and CL2 denote a first brake, a second brake, a first clutch, and a second clutch, respectively.

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PUM

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Abstract

The invention discloses a hybrid electric vehicle power driving system based on double planetary lines. A first planetary frame is connected with a first power source through a fifth transmission shaft and a first transmission shaft; a first brake is arranged on the fifth transmission shaft; a first sun wheel is in driving connection with a third power source through a fourth transmission shaft, and a second brake is arranged on the fourth transmission shaft; a second planetary frame is connected with a first gear ring, the second planetary frame is connected with a power output device througha second transmission shaft, a second sun wheel is in driving connection with a second power source through a third transmission shaft, and a second gear ring is connected with the fourth transmission shaft; and a controller is electrically connected with the first brake, the second brake, the first power source, the second power source and the third power source. In the hybrid electric vehicle power driving system, the second power source and the third power source are mounted on the position away from the first power source so as to reduce the influence of the heat dissipation temperature of the first power source on the second power source and the third power source, a second power source cooling system and a third power source cooling system are simplified, and the efficiency of the systems is improved.

Description

technical field [0001] The invention relates to the field of automobile power transmission, in particular to a hybrid electric vehicle power drive system based on a double planetary row. Background technique [0002] The power drive system of hybrid electric vehicles includes series / parallel, planetary row power splitting and other systems, among which, the planetary row power splitting device has the function of decoupling the engine speed and wheel speed through the speed regulation ability of the motor, which can have better performance. fuel economy. At the same time, with the development of battery technology and the national policy's emphasis on pure electric mileage, plug-in hybrid vehicles with longer mileage in pure electric mode have attracted more and more attention from major manufacturers. [0003] The existing power-split hybrid drive system based on the planetary gear mechanism, in the E-CVT hybrid drive mode, if only the input power split mode is used, it is...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B60K6/365B60K6/547B60K6/22
CPCB60K6/22B60K6/365B60K6/547
Inventor 胡明辉苏炎召苏岭秦大同
Owner CHONGQING UNIV
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