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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., can solve the problems of limited speed ratio range, low torque and power transmission ability and efficiency, and high manufacturing process requirements. Achieve the effect of increasing the speed ratio range, improving the overall efficiency and high transmission efficiency

Active Publication Date: 2009-08-26
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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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] Such as figure 2 As shown, a series-connected hybrid driving device in a hybrid electric 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 dual-rotor motor 41 through the input shaft 31 and the first brake 103, and the inner rotor is also connected to the ring gear of the first planetary mechanism 61 through the shaft; the first counter-rotating dual-rotor motor 41 The outer rotor is connected with 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 ...

Embodiment 2

[0091] Such as image 3 shown: the embodiment and the general principle figure 1 The parts used are basically the same, but the way the parts are connected has been adjusted. The output shaft 31 of the engine 1 is directly connected to the planetary 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 double-rotor motor 41 through the first fixed shaft gear pair 51, while the first counter-rotating The outer rotor of the dual-rotor motor 41 is connected to the sun gear of the first planetary mechanism 61 through the second brake 102. After converging here, the power is transmitted by the ring gear of the first planetary mechanism 61 in two ways, and one way passes through the intermediate transmission shaft 32 The planet carrier of the second planetary mechanism 62, and the other way is transmitted to the inner rotor of the second counter-rotating dual-rotor motor 42 through the second ...

Embodiment 3

[0112] Such as Figure 4 As shown: the difference between this embodiment and embodiment 1 is that the third brake 101 in embodiment 1 is removed.

[0113] This embodiment is divided into two situations according to whether the first brake 103 brakes: the situation of the first brake 103 braking, which is equivalent to the second situation when the first brake 103 brakes in Embodiment 1; The non-braking situation 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 an automatic shifting system in a hybrid electric vehicle, in particular to a hybrid hybrid driving device of a type of hybrid electric vehicle. technical background [0002] At present, due to the problems of energy and environment, people pay more and more attention to hybrid electric vehicle (HEV), which has gradually become a development trend and is a hot research topic in the field of automobile. According to different energy synthesis methods, HEV can be divided into series type, parallel type and hybrid type. Among them, the hybrid type combines the advantages of the series and parallel types, and is the best solution among them. [0003] Regardless of whether it is a HEV or a traditional internal combustion engine vehicle, the transmission, as its power transmission component, plays a vital role in the adjustment of the engine characteristics and the driving performance of the vehicle. Among ...

Claims

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Application Information

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Patent Type & Authority Applications(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