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A power distribution method for a fuel cell hybrid electric vehicle

A technology of hybrid electric vehicles and fuel cells, which is applied in the direction of electric vehicles, battery/fuel cell control devices, vehicle components, etc., can solve the problems of passive auxiliary energy sources and unreasonable distribution of power distribution among the three energy sources, and achieve saving Hydrogen consumption, improved power distribution accuracy, and extended working life

Active Publication Date: 2021-07-09
HENAN UNIV OF SCI & TECH
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  • Description
  • Claims
  • Application Information

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Problems solved by technology

The existing control strategy for the three energy sources does not reasonably distribute the power among the three energy sources, resulting in a very passive operation of the auxiliary energy source

Method used

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  • A power distribution method for a fuel cell hybrid electric vehicle
  • A power distribution method for a fuel cell hybrid electric vehicle
  • A power distribution method for a fuel cell hybrid electric vehicle

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Embodiment Construction

[0031]In order for those skilled in the art to better understand the technical solutions provided by the present invention, the following will be further elaborated in conjunction with specific embodiments.

[0032] This case will be fully understood by the description of the following embodiments, so that those familiar with the art can complete it, but the embodiments of this case cannot be limited to its implementation form by the following.

[0033] A power distribution method for a fuel cell hybrid electric vehicle, comprising a vehicle load power distribution step and an auxiliary energy source demand distribution step, the vehicle load power distribution step is mainly to distribute the vehicle load power to a fuel cell and an auxiliary energy source, and the fuel cell undertakes the required power The steady-state load, the auxiliary energy source undertakes the peak power and performs energy recovery.

[0034] figure 1 The battery operation mode diagram is shown. Fir...

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Abstract

The invention provides a power distribution method for a fuel cell hybrid electric vehicle, which includes the step of distributing the output power of the main energy source and the auxiliary energy source of the vehicle and the distribution step of the output power between the auxiliary energy sources, and the output power of the main energy source and the auxiliary energy source of the vehicle The distribution strategy of the car is to distribute the load power of the vehicle to the fuel cell and the auxiliary energy source, and the power distribution strategy of the auxiliary energy source is to distribute the required power of the auxiliary energy source to the battery and super capacitor; it is divided into discharge mode under the condition of charge and discharge electromagnetic hysteresis , balance mode and charging mode; then in different battery modes, a rule-based allocation method is set in combination with fuel cell working efficiency. The auxiliary energy source demand allocation step uses the auxiliary energy source demand power as a sampling value, and the difference between the auxiliary energy source demand power and the battery output power is obtained to obtain the supercapacitor output power. The invention reasonably distributes the load power to the fuel cell, the battery and the supercapacitor, and at the same time achieves the purpose of saving hydrogen consumption.

Description

technical field [0001] The invention belongs to the field of fuel cell hybrid electric vehicles, in particular to a power distribution method for fuel cell hybrid electric vehicles. Background technique [0002] Due to the frequent occurrence of environmental problems such as the oil crisis and environmental pollution, the government has become more and more stringent on the emission indicators of fuel vehicles. Countries have gradually announced the date of stopping the production of traditional fuel vehicles, and major automakers have to develop new energy vehicles. Fuel cell hybrid vehicles have neither long charging time nor emission of polluting gases. They are a new generation of new energy vehicles. Due to the high price of fuel cells and their own characteristics, they are usually mixed with batteries or (and) supercapacitors to form a composite power supply, using their respective advantages to make up for their shortcomings. [0003] At present, the control strate...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B60L58/40B60L58/12
CPCB60L58/30B60L58/40Y02T10/70Y02T90/40
Inventor 付主木李桢辉李勋陶发展孙兴龙朱龙龙
Owner HENAN UNIV OF SCI & TECH
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