A fuel cell vehicle vehicle power distribution control method and system

A fuel cell vehicle and fuel cell technology, which is applied to battery/fuel cell control devices, electric vehicles, vehicle components, etc., can solve the problems of output power fluctuation and the impact of fuel cell system life, and achieve the effect of reducing hydrogen consumption indicators.

Active Publication Date: 2021-08-06
CHINA FIRST AUTOMOBILE
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  • Abstract
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Compared with the other two configurations, the performance of the power system of the full-power fuel cell vehicle has obvious advantages, but during the operation of the vehicle, uncertain working conditions will cause the output power of the fuel cell system to fluctuate continuously, which will affect The life of the fuel cell system has a certain impact

Method used

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  • A fuel cell vehicle vehicle power distribution control method and system
  • A fuel cell vehicle vehicle power distribution control method and system
  • A fuel cell vehicle vehicle power distribution control method and system

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Embodiment Construction

[0056] In order to make the technical problems, technical solutions and advantages to be solved by the present invention clearer, the following will describe in detail with reference to the drawings and specific embodiments.

[0057] figure 1 It is a configuration diagram of a fuel cell vehicle used in the present invention; figure 2 It is a schematic flow chart of the fuel cell vehicle power distribution control method provided by the embodiment of the present invention; image 3 It is a schematic diagram of division of fuel cell power intervals according to the embodiment of the present invention; Figure 4 It is a schematic diagram of fuel cell demand power optimization according to an embodiment of the present invention.

[0058] Such as figure 1 As shown, there are two energy sources in the vehicle system used in the embodiment of the present invention, which are the fuel cell and the power battery respectively. After the fuel cell is boosted by DCDC, it is connected ...

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Abstract

The present invention provides a power distribution control method for a fuel cell vehicle, comprising: determining the drive demand torque based on the vehicle speed and the opening of the accelerator pedal; determining the drive demand power based on the drive demand torque, motor efficiency and motor speed; determining the drive demand power based on the power battery voltage and The current of the power battery is used to determine the charging and discharging power of the power battery; the required power of the power battery is determined based on the charging and discharging power of the power battery and the power of the power battery; The battery capacity and the efficiency curve of the fuel cell system are used to optimize the power required by the fuel cell. The invention also provides a vehicle power distribution control system for the fuel cell vehicle. The present invention maximizes its efficiency on the basis of protecting the power battery and maximizes the reduction of the hydrogen consumption index of the whole vehicle on the basis of protecting the fuel cell system.

Description

technical field [0001] The invention belongs to the technical field of fuel cell vehicles, and relates to a power distribution control algorithm and system that comprehensively considers the efficiency of fuel cells and power cells, specifically a fuel cell vehicle power distribution control method and system. Background technique [0002] With the aggravation of global environmental pollution and the decline of oil reserves, electric vehicles have gradually entered people's lives. In recent years, electric vehicle technology has achieved rapid development, but according to market feedback, short driving range and long charging time have become the main bottlenecks restricting the promotion of electric vehicles. Therefore, fuel cell vehicles have emerged as the times require. [0003] Fuel cell vehicles mainly use H 2 As the main energy source, it is equipped with Ni-MH battery or super capacitor as auxiliary energy source. During the running of the vehicle, the H in the f...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B60L58/10B60L58/40
CPCY02T10/70
Inventor 刘元治宋浩源赵永强郁大嵬程健郭丁伊徐家良
Owner CHINA FIRST AUTOMOBILE
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