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Pure electric bus dynamic route planning method capable of prolonging service life of power cell

A power battery and electric bus technology, which is applied in the traffic control system of road vehicles, traffic control systems, data processing applications, etc., can solve the problem of not considering the impact of battery pure electric bus operation economy and ignoring the power battery capacity decline Problems such as the mutual influence of characteristics, to achieve the effect of reducing operating costs, reducing the number of updates, and prolonging the service life

Active Publication Date: 2017-09-29
XI AN JIAOTONG UNIV
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  • Application Information

AI Technical Summary

Problems solved by technology

At present, the design of route scheduling schemes for pure electric buses is mostly focused on the improvement of the algorithm for solving the scheduling model, often ignoring the interaction between the characteristics of power battery capacity decline, the operating characteristics of electric vehicles, and the characteristics of working road conditions. Does not take into account the impact of battery capacity decline characteristics on the operating economics of pure electric buses

Method used

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  • Pure electric bus dynamic route planning method capable of prolonging service life of power cell
  • Pure electric bus dynamic route planning method capable of prolonging service life of power cell
  • Pure electric bus dynamic route planning method capable of prolonging service life of power cell

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Embodiment Construction

[0034] The present invention will be described in further detail below in conjunction with the accompanying drawings.

[0035] Such as figure 1 As shown, the assumptions of the pure electric bus operation line scheduling method are as follows:

[0036] 1) First, assume that the number of pure electric buses in operation is fixed, and the bus routes and operating schedules are fixed;

[0037] Based on the above assumptions, the dynamic route planning method for pure electric buses that prolongs the service life of power batteries includes the following steps:

[0038] 2) Calculate the power battery workload corresponding to all operating lines;

[0039]Pure electric buses run on different routes, the road conditions are different, the speed of the vehicle is different, and the workload of the power battery is also different. Therefore, the change of the output power of the power battery in the pure electric bus with time can be used to characterize the road condition load of...

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Abstract

The invention relates to a pure electric bus dynamic route planning method capable of prolonging service life of power cells. On the basis of comprehensively considering the pure electric bus operation characteristic, the power cell capacity degradation characteristic and the bus route road condition characteristic and mutual influence of the three characteristics, possible scheduling schemes of pure electric buses at each stage and routes can be acquired through constructing a bigraph model, through calculating total change amount of capacity degradation of all the power cells in different scheduling states, a dynamic planning recursion algorithm is utilized to accomplish optimization of a scheduling period and the scheduling schemes of the full process. The method is advantaged in that service life of the power cells of the electric buses can be prolonged to a maximum degree through the acquired optimal scheduling scheme under the power cell technology level in the prior art, frequency of power cell update in the integral vehicle service life period can be reduced to a maximum degree, and operation cost of the pure electric buses can be effectively reduced.

Description

technical field [0001] The invention belongs to the field of process system engineering, and in particular relates to a dynamic route planning method for a pure electric bus capable of prolonging the service life of a power battery. Background technique [0002] The power battery is the core component of the pure electric bus, which provides the power source for the vehicle. The power battery is one of the main cost elements of an electric bus, and its service life is much shorter than that of a pure electric bus. Due to problems such as short life and high cost, the operating performance of electric buses is largely limited, and the root cause is the capacity decline of power batteries. The decline in the performance of the power battery is not only related to the battery's own charging and discharging electrochemical characteristics and ambient temperature, but also related to the workload and usage of the power battery. For pure electric buses, the capacity attenuation ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06Q10/04G06F17/50
CPCG06Q10/047G08G1/00G06F2119/04G06F30/20
Inventor 康丽霞刘永忠黄贤坤
Owner XI AN JIAOTONG UNIV
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