Power system for hybrid vehicles

A hybrid vehicle and power system technology, applied in the field of hybrid vehicles, can solve problems such as poor adaptability and single structure, and achieve the effect of increasing torque

Pending Publication Date: 2018-12-07
NINGBO SHANGZHONGXIA AUTOMATIC TRANSMISSION +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The structure of the power system in the existing hybrid e

Method used

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Examples

Experimental program
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Example Embodiment

[0031] Example one

[0032] figure 1 It is a schematic structural diagram of a power system 100 according to an embodiment of the present invention. The power system 100 of the present invention is not only applicable to a vehicle with a two-wheel drive transmission mechanism, but also applicable to a vehicle with a four-wheel drive transmission structure. Such as figure 1 As shown, the power system 100 mainly includes an engine 54, a first electric machine 101, a second electric machine 102, a first planetary gear mechanism 104, a first input shaft 2, a first clutch 7, and a brake 30. The first motor 101 includes a first stator 40 and a first rotor 5, and the second motor 102 includes a second stator 18 and a second rotor 19. The engine 54 is in transmission connection with the first electric motor 101, and the first clutch 7 is arranged between the first electric motor 101 and the first input shaft 2 to cut off or connect the first electric motor 101 and the first input shaft ...

Example Embodiment

[0072] Example two

[0073] figure 2 It is a schematic structural diagram of a power system 100 according to another embodiment of the present invention. If a larger reduction ratio is required, the second planetary gear mechanism 103 can adopt different coupling methods. In this embodiment, the second motor and the first input shaft are also coaxially arranged. reference figure 2 , The second sun gear 24 is fixed on the second rotor 19 of the second motor 102 and rotates with the second rotor 19, specifically, the second sun gear 24 passes through the rotor support plate 22 and the second rotor 19 of the second motor 102 In transmission connection, the second planet carrier 53 is mounted on the rear housing 17 and fixed relative to the rear housing 17, and the second ring gear 21 is in transmission connection with the first input shaft 2. The second motor 102 transmits power to the first input shaft 2 through the second ring gear 21. With the above structure, a larger reduc...

Example Embodiment

[0075] Example three

[0076] image 3 It is a schematic structural diagram of a power system 100 according to another embodiment of the present invention. Such as image 3 As shown, in this embodiment, the first motor (P1) is arranged as in the above embodiment, and the second motor (P3) is arranged off-axis with the first input shaft. The second sun gear 24 is drivingly connected to the second rotor 19 of the second motor 102 through the transmission chain 110. The second ring gear 21 is mounted on the rear housing 17 and fixed relative to the rear housing 17, and the second motor 102 passes through the second planet The frame 53 transmits power to the first input shaft 2. In this embodiment, except for the different connection modes of the second motor 102 and the first input shaft 2, the other connection structures and operation modes are not much different from those in the first embodiment, so they will not be described in detail.

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Abstract

The invention provides a power system for a hybrid vehicle, which relates to the field of hybrid vehicles. The power system mainly includes an engine, a first electric machine, a second electric machine, a first planetary gear mechanism, a second planetary gear mechanism, a first input shaft, a first clutch, a brake, and a second clutch. Since the second motor is connected to the input shaft through the second planetary gear mechanism, the speed of the second motor can be reduced and the torque can be increased through the planetary gear mechanism to effectively reduce the size of the second motor or improve the acceleration performance of the vehicle. As that first clutch between the input shaft and the engine is disengaged when the second electric machine is driven, drag resistance of the engine is reduced, and fuel economy of the vehicle is improve.

Description

technical field [0001] The invention relates to the field of hybrid vehicles, in particular to a power system for hybrid vehicles. Background technique [0002] At present, the use of gasoline-electric hybrid power as a vehicle power source has increasingly become the mainstream trend of vehicle development. A gasoline-electric hybrid vehicle usually includes an engine with a smaller displacement than a conventional engine and one or two electric motors. In general, when driving at low speed (such as urban roads) or when frequent starting is required, the vehicle can be driven only by the motor; when high speed driving is required, only the engine can be used to drive the vehicle to save energy. . In the prior art, the hybrid modes of the gasoline-electric hybrid vehicles mainly include three modes: series connection, parallel connection and hybrid connection. [0003] The structure of the power system in the existing hybrid electric vehicle is relatively simple, and the ...

Claims

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Application Information

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IPC IPC(8): B60K6/365B60K6/387B60K6/445B60K6/405
CPCB60K6/365B60K6/387B60K6/405B60K6/445Y02T10/62
Inventor 邱志凌泰坚达谢伟乾
Owner NINGBO SHANGZHONGXIA AUTOMATIC TRANSMISSION
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