Efficiency optimization control method for range-extended electric vehicles based on threshold power calculation
An electric vehicle, efficiency optimization technology, applied in the direction of electric vehicles, motor vehicles, adaptive control, etc., can solve the problems of complex calculation of optimization algorithm and unsuitability for practical application, so as to reduce loss, maintain stable change, and prolong service life Effect
Active Publication Date: 2020-01-31
北京共元科技有限公司
View PDF8 Cites 0 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
[0008] The above-mentioned energy distribution strategy based on the optimization algorithm can satisfy real-time control, and is the best choice in terms of energy saving results, but the optimization algorithm based on DP and PMP is complex to calculate, and is based on multiple driving cycles, requiring working condition prediction and A large amount of data processing, not suitable for practical application
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment Construction
[0041] Embodiments of the present invention are described in further detail below in conjunction with the accompanying drawings:
[0042] In this embodiment, an example of an extended-range electric vehicle for urban compact applications is used for illustration. The extended-range electric vehicle is based on the technical requirements of GB / T28382 electric vehicle, and the design parameters of the vehicle are shown in Table 1
[0043] Table 1 Vehicle parameters of extended-range electric vehicles
[0044]
[0045] A method for optimizing the efficiency of an extended-range electric vehicle based on threshold power calculation includes the following steps:
[0046] Step 1. Taking fuel consumption optimization as the objective function, determine the power following threshold.
[0047] Here, it is first necessary to determine the high-efficiency working area of the system to realize the matching of the engine and the generator in the high-efficiency area. The high-effi...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More PUM
Login to View More Abstract
The invention relates to an extended-range automobile efficiency optimization control method based on threshold power calculation. The extended-range automobile efficiency optimization control method is characterized by determining the power following threshold by taking the fuel consumption optimization as the target function; when the whole vehicle demand power is greater than or equal to the power following threshold, adopting the local fixed rotating speed power following control strategy; and on the basis of the local fixed rotating speed power following control, adopting a local switching rotating speed power following decoupling control strategy. The power following threshold is determined by the lowest fuel consumption, the balance point between the efficiency loss of battery charging and discharging when a range extender engine runs at the optimum operating point and the efficiency loss when the engine runs at the non-optimum operating point is searched, the local power following control strategy in the public high efficiency area controls the engine and the generator to operate in the high efficiency area simultaneously, the loss of the frequent power on of the range extender can be reduced, the battery can be prevented from being frequently charged and discharged, the battery SOC stable change can be maintained, and the service life of the battery is prolonged.
Description
technical field [0001] The invention belongs to the technical field of electric vehicles, in particular to an efficiency optimization control method for an extended-range electric vehicle based on threshold power calculation. Background technique [0002] Due to the low fuel combustion efficiency and stricter vehicle emission requirements, the automotive industry is actively developing environmentally friendly new energy vehicles. Electric vehicles (Electric Vehicle, EV) are considered to be a green solution. Electric drive makes it have the advantage of zero emissions, but for pure electric vehicles, due to the limitation of battery technology, the mileage of a single charge can never reach the ideal level, which is the main disadvantage of pure electric vehicles. In order to overcome the problem of the cruising range of pure electric vehicles, Extended Range-Electric Vehicle (ER-EV) came into being, which is a feasible low-cost solution. [0003] At present, the combinat...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More Application Information
Patent Timeline
Login to View More Patent Type & Authority Patents(China)
IPC IPC(8): G05B13/04B60L50/15
CPCB60L50/61G05B13/042Y02T10/62Y02T10/70Y02T10/7072
Inventor 孙强张伟玉王莎莎吕海英陈姞君马少华许环涛
Owner 北京共元科技有限公司