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Cost based method for optimizing external PHEV (Plug-in Hybrid Electric Vehicle) power assembly and application thereof

A hybrid electric vehicle and powertrain technology, which is applied in the field of optimal design of the PHEV powertrain system of an externally rechargeable hybrid electric vehicle, can solve the problems of limited battery capacity and the impossibility of completely replacing petroleum-driven vehicles with electric energy

Active Publication Date: 2011-09-14
HEFEI UNIV OF TECH
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Problems solved by technology

[0005] For the current high oil price, the relatively low cost of electricity can reduce the cost of PHEV use, but limited by the capacity of the battery, it is impossible for electric energy to completely replace petroleum-driven vehicles

Method used

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  • Cost based method for optimizing external PHEV (Plug-in Hybrid Electric Vehicle) power assembly and application thereof
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  • Cost based method for optimizing external PHEV (Plug-in Hybrid Electric Vehicle) power assembly and application thereof

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Embodiment Construction

[0074] Due to the different components, layout and control strategies of hybrid electric vehicles, various structural types are formed, and the manufacturing and use costs of different structural schemes are also different. Therefore, in order to compare with traditional automobiles and ordinary hybrid electric vehicles , the cost-based optimal design method of PHEV powertrain system has practical significance, and provides reasonable quantitative indicators for PHEV manufacturing and use costs.

[0075] In this embodiment, according to the layout structure of the PHEV powertrain, the variables to be optimized in the optimal design of the PHEV powertrain system are determined, the PHEV cost objective function equation and constraint conditions are established, and the optimal design of the PHEV powertrain system is transformed into an optimization problem, and then Using the optimization method, the variables to be optimized for the powertrain system that can meet the PHEV cons...

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Abstract

The invention discloses a cost based method for optimizing an external PHEV (Plug-in Hybrid Electric Vehicle) power assembly and application thereof. The method is characterized by comprising the steps of firstly confirming variables to be optimized in a PHEV power assembly design according to an external PHEV power assembly arranging structure and establishing a PHEV cost objective functional equation and a constraint condition; then figuring out the variable to be optimized of the PHEV power assembly, which meets the constraint condition and has the lowest cost, by utilizing the cost objective functional equation and the constraint condition and by adopting a quadratic programming or matrix partition optimization algorithm; and then obtaining an optimum design scheme of the PHEV power assembly, which meets the constraint condition and has the lowest cost. By means of the method provided by the invention, reasonable quantitative indicators can be provided for the manufacturing and the use cost of the external PHEV and a fast and efficient design for a PHEV power assembly system is realized.

Description

technical field [0001] The invention belongs to the field of hybrid electric vehicles, and in particular relates to an optimal design method for a PHEV power assembly system of an externally rechargeable hybrid electric vehicle based on manufacturing cost and use cost. Background technique [0002] Plug-in hybrid electric vehicle (PHEV) is developed on the basis of full-hybrid ICEHEV, and is a kind of internal combustion engine hybrid ICEHEV. Its biggest feature is that it can use the external public power grid, mainly to use the low-peak power at night to balance the vehicle power battery pack, and also charge the battery pack at home and use it during the day, which can not only improve the efficiency of the power grid, but also help It can reduce the electricity price and greatly reduce the dependence on oil; the use of electricity can reduce the cost of use more than the use of fuel. The PHEV combines the hybrid drive system and the pure electric drive system, which can...

Claims

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Application Information

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IPC IPC(8): B60W20/00B60W40/10B60W40/12B60W20/10
CPCY02T90/14
Inventor 张炳力徐国胜侯清亮
Owner HEFEI UNIV OF TECH
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