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A parameter matching method for a dual-mode power-split hybrid power system

A hybrid power system and parameter matching technology, which is applied in the field of parameter matching of dual-mode power-split hybrid power systems, can solve problems such as difficulty in obtaining the optimal value of design parameters, and rarely consider the influence of system efficiency characteristics, and achieve a simple and effective matching method , strong applicability

Active Publication Date: 2019-07-23
JILIN UNIV
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Problems solved by technology

However, there is currently no general and feasible design method for dual-mode power-split hybrid systems; in addition, the current parameter matching design mostly targets the basic power requirements, and rarely considers system efficiency characteristics, cycle driving conditions and The impact of the overall control idea on the matching results, it is difficult to obtain the optimal value of the design parameters

Method used

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  • A parameter matching method for a dual-mode power-split hybrid power system
  • A parameter matching method for a dual-mode power-split hybrid power system
  • A parameter matching method for a dual-mode power-split hybrid power system

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Embodiment Construction

[0073] The applicant provides an embodiment of the present invention according to a specific urban bus development process, in order to describe the technical solution of the present invention clearly and completely.

[0074] Such as figure 1 As shown, the parameter matching method suitable for the dual-mode power-split hybrid system includes the following steps:

[0075] 1) Hybrid system efficiency calculation and mode switching condition determination:

[0076] Such as figure 2 As shown, the dual-mode power-split hybrid power system includes an engine 1, a torsional shock absorber 2, a front planetary row 3, a rear planetary row 4, a first motor 5, a second motor 6, a first clutch 7, and a second clutch 8. The final reducer 9 and the wheels 10; it is characterized in that: the engine 1 is connected to the planet carrier of the front planetary row 3 through the torsional shock absorber 2, and the first motor 5 is connected to the sun gear of the front planetary row 3, The...

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Abstract

The invention provides a parameter matching method for a dual mode power shunt hybrid power system, and the parameter design problem of the dual mode power shunt hybrid power system is solved. The method includes the following steps that, firstly, a lever model of the dual mode power shunt hybrid system is established, and efficiency characteristics and switching conditions in different modes of the system are obtained; then the dynamic performance index, the cycle driving condition, the mode switching condition, and the basic control idea are comprehensively considered, and the type selectiondesign of an engine, a motor and a battery is carried out in turn; and finally, simulation calculation is carried out by using the forward simulation model to verify the dynamic performance and economic performance of a whole vehicle. The matching method is simple and effective, saves the preliminary matching cost, shortens the development cycle, and significantly improves the dynamic performanceand economic performance of the whole vehicle.

Description

technical field [0001] The invention belongs to the field of automobile power systems, and in particular relates to a parameter matching method of a dual-mode power-split hybrid power system. Background technique [0002] In order to solve the crisis of energy and environment, hybrid electric vehicle has become a research hotspot in the world automobile industry. In the hybrid system configuration, the power-split hybrid system can combine the advantages of series and parallel systems and avoid the disadvantages of both systems, and is the most optimized configuration scheme. Compared with the single-mode power-split hybrid system, the dual-mode hybrid system can match smaller motors and have a wider system high-efficiency working range. However, the different mode switching conditions of the dual-mode configuration will inevitably affect The transmission efficiency of the system and the selection of motor parameters increase the difficulty of matching and selection design....

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B60K6/365B60K6/38G06F17/50
CPCB60K6/365B60K6/38G06F30/15
Inventor 曾小华王振伟宋大凤杨南南王越李广含黄海瑞崔皓勇董兵兵孙可华
Owner JILIN UNIV
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