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Series-parallel hybrid power driving device

A technology for hybrid power and drive devices, which is applied in power devices, hybrid vehicles, pneumatic power devices, etc., and can solve the problems of limited speed ratio range, high manufacturing process requirements, low torque and power transmission ability and low efficiency, etc. , to achieve the effect of increased speed ratio range, high transmission efficiency, and improved overall efficiency

Active Publication Date: 2012-07-18
SOUTH CHINA UNIV OF TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Among the various existing power transmission systems, the hydromechanical automatic transmission (AT) has the advantages of not cutting off the power shift, smooth starting, and the torque converter adapting to resistance, but it has complex structures and manufacturing process requirements. High, low transmission efficiency of hydraulic torque converter and other disadvantages; electromechanical automatic transmission (AMT) has the advantages of high transmission efficiency and large power capacity, but it is difficult to obtain the perfect transmission characteristics of continuously variable automatic transmission; due to continuously variable transmission The transmission (CVT) can continuously change the speed ratio, so that the car can achieve the best match between the engine and the motor operating point (best economy or best power match) according to the driver's operation intention under any working condition. Thereby effectively reducing emissions and improving the fuel economy, power and ride comfort of the vehicle. Therefore, hybrid electric vehicles based on continuously variable transmission have become the preferred solution
[0004] However, as far as some types of mechanical continuously variable transmissions (CVT) currently exist, because they are actually based on friction transmission, they have the ability to transmit torque and power and low efficiency, and the available range of gear ratios (that is, the ratio of the maximum speed ratio to the minimum speed ratio of the system) is quite limited and other shortcomings, so it is generally only suitable for small-displacement cars and motorcycles with small power and speed ratio ranges, or other vehicles that only need to transmit small power. use or occasion

Method used

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  • Series-parallel hybrid power driving device
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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] Such as figure 2 As shown, a hybrid hybrid drive device in a hybrid vehicle includes an engine 1, a first counter-rotating dual-rotor motor 41, a second counter-rotating dual-rotor motor 42, a first planetary mechanism 61, and a second planetary mechanism 62. , The first brake 103, the second brake 102, the third brake 101, the battery pack 13, the control unit ECU12, the first fixed-axis gear pair 51, the second fixed-axis gear pair 52 and a plurality of speed sensors. The engine 1 is connected to the inner rotor of the first counter-rotating double-rotor motor 41 through the input shaft 31 and the first brake 103. The inner rotor is also connected to the ring gear of the first planetary mechanism 61 through the shaft; The outer rotor is connected to the sun gear of the first planetary mechanism 61 through the first fixed shaft gear pair 51. The planet carrier of the first planetary mechanism 61 is connected to the inner rotor of the second counter-rotating double-roto...

Embodiment 2

[0092] Such as image 3 Shown: this embodiment and general principles figure 1 The components used are basically the same, but the connection method of each component has been adjusted. The output shaft 31 of the engine 1 is directly connected to the planet carrier of the first planetary mechanism 61 through the first brake 103, and is also connected to the inner rotor of the first counter-rotating dual-rotor motor 41 through the first fixed shaft gear pair 51, and the first counter-rotating The outer rotor of the double-rotor motor 41 is connected to the sun gear of the first planetary mechanism 61 through the second brake 102. After the power is converged here, it is transmitted by the ring gear of the first planetary mechanism 61 in two ways, one way through the intermediate transmission shaft 32. It is transmitted to the planet carrier of the second planetary mechanism 62, and the other way is transmitted to the inner rotor of the second counter-rotating double-rotor motor 4...

Embodiment 3

[0114] Such as Figure 4 Shown: The difference between this embodiment and Embodiment 1 is that the third brake 101 in Embodiment 1 is removed.

[0115] This embodiment is divided into two cases according to whether the first brake 103 is braking or not: the first brake 103 is braking, which is equivalent to the second case when the first brake 103 is braking in the first embodiment; the first brake 103 The situation when not braking is equivalent to the second situation when the first brake 103 is not braking in Embodiment 1. The specific working principle and speed ratio calculation are basically the same as those in Embodiment 1, and will not be repeated here.

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Abstract

The invention discloses a series-parallel hybrid power driving device; an input shaft of an engine is connected with an output shaft sequentially by a first level power transmission mechanism formed by a first contrary-turning dual-rotor motor and a first planetary mechanism as well as a second level power transmission mechanism formed by a second contrary-turning dual-rotor motor and a second planetary mechanism; a accumulator battery is respectively and electrically connected with a first machine controller, a second machine controller and a control unit ECU, wherein, the first machine controller and the second machine controller are respectively and electrically connected with the first contrary-turning dual-rotor motor and the second contrary-turning dual-rotor motor. According to the needs of actual road condition, the invention leads the two dual-rotor motors to work in different combining ways, so as to realize multiple working modes such as pure starting mode, pure electric mode, series-parallel mode, energy regenerating brake mode and the like; when the speed ratio range of the system is greatly increased, the function of stepless speed change can be realized.

Description

Technical field [0001] The invention relates to a power transmission and automatic transmission system in a hybrid electric vehicle, in particular to a hybrid hybrid drive device of a type of hybrid electric vehicle. technical background [0002] At present, due to energy and environmental issues, hybrid electric vehicles (HEV) have attracted more and more attention, and have gradually become a development trend and a hot topic in the current automotive field. According to different energy synthesis methods, HEV can be divided into series, parallel and hybrid. Among them, the series-parallel type combines the advantages of the series and parallel types and is the best solution among them. [0003] Regardless of whether it is an HEV or a traditional internal combustion engine vehicle, the transmission, as its power transmission component, plays a vital role in the adjustment of engine characteristics and the performance of the vehicle. Among the existing multiple power transmissio...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B60K6/44B60K6/543
CPCY02T10/6243Y02T10/623Y02T10/62
Inventor 罗玉涛黄向东黄河谭迪郑方明裴锋周玉山
Owner SOUTH CHINA UNIV OF TECH