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Fuel cell vehicle control method and control system

A fuel cell and control method technology, applied in battery/fuel cell control devices, electric vehicles, control devices, etc., can solve the problems of short battery life, low battery charging and discharging efficiency, and no consideration of battery status, etc., to achieve good power and the effect of cruising range

Active Publication Date: 2020-08-07
FUJIAN FUAN MINDONG YANAN ELECTRICAL MACHINE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, because this design only achieves optimal control of the fuel cell without considering the state of the battery, the charging and discharging efficiency of the battery in this working mode is not high, and the battery life is short
At the same time, this control strategy cannot meet the performance requirements of the vehicle. For example, when the fuel cell has not reached the working point and is in the off state, and the remaining power value of the battery is low, it is difficult to meet the requirements of the vehicle to accelerate. The required high power and sequential response requirements

Method used

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  • Fuel cell vehicle control method and control system
  • Fuel cell vehicle control method and control system
  • Fuel cell vehicle control method and control system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0067] Please refer to figure 2 , Embodiment 1 of the present invention is:

[0068] A control method for a fuel cell vehicle, comprising:

[0069] S1: When the car is detected to be started, the fuel cell is turned off and the battery is started;

[0070] S2: judging whether the temperature of the fuel cell reaches a preset temperature;

[0071] S3: If the temperature of the fuel cell reaches the preset temperature, obtain the required power of the car and the remaining power of the battery;

[0072] S4: When the required power of the car is less than the first power value and the remaining power of the battery is greater than the first power value, turn off the fuel cell and start the battery; can;

[0073] S51: When the required power of the car is greater than the first power value and less than the second power value, turn off the battery and start the fuel cell; the fuel cell supplies power to the driving system and the additional load of the car; the fuel cell alon...

Embodiment 2

[0095] A control system corresponding to the control method of the fuel cell vehicle in the first embodiment above, comprising:

[0096] It includes a memory and a processor, the memory stores a program, and the processor is used to run the program to perform the following steps:

[0097] When the car is detected to be started, the fuel cell is turned off and the battery is started;

[0098] judging whether the temperature of the fuel cell reaches a preset temperature;

[0099] If the temperature of the fuel cell reaches the preset temperature, the required power of the car and the remaining power of the battery are obtained;

[0100] When the required power of the car is less than the first power value and the remaining power of the battery is greater than the first power value, the fuel cell is turned off and the battery is started, and the battery supplies power for the driving system and the additional load of the car respectively; in this process, the battery alone suppl...

specific example

[0108] (1) When the car is started, the battery works alone to provide the power P required for driving the car req =25KW, and it is additional load P acc = 5KW power supply, the output power of the storage battery P bat The calculation formula is:

[0109] P bat =P req +P acc = 30KW

[0110] After the fuel cell is preheated to the working temperature (ie the above-mentioned preset temperature), it is determined whether to start the fuel cell according to the power demand of the vehicle and the remaining power of the battery.

[0111] (2) When the car is running normally:

[0112] When the power required by the whole vehicle is less than the minimum power of 30KW allowed by the fuel cell, the battery still needs to supply power alone.

[0113] When the power P required by the vehicle req =50KW is greater than the minimum power of 30KW allowed by the fuel cell and less than the maximum power of 70KW allowed by the fuel cell system, the fuel cell is turned on, the batter...

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PUM

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Abstract

The invention provides a control method of a fuel cell car and a control system of the fuel cell car. The method includes steps of acquiring demand powder of a car and dump energy of a storage battery; when the demand power of the car is more than the first power value or the dump energy of the storage battery is less than the first electric quantity, starting the fuel cell. The workings state ofthe fuel cell is determined according to the demand powder of the car and dump energy of the storage battery, thus the power energy of the car can meet the driving power demand of the whole car, and fully use the energy source of the fuel cell and the storage battery, thus the car has better power and continuation abilities.

Description

technical field [0001] The invention relates to the field of fuel cell vehicles, in particular to a control method and a control system for a fuel cell vehicle. Background technique [0002] Facing the pressure of environmental pollution, global warming, and energy shortages, in order to alleviate the severe challenges of depletion of energy in the world after a few years, and the environmental pollution caused by the proliferation of traditional vehicles, the development trend of new energy vehicles It must be done. Currently, there are three main types of electric vehicles that have been applied in the market: pure electric vehicles, hybrid electric vehicles and fuel cell electric vehicles. Pure electric vehicles use electric motors as power. Due to the limitation of battery technology and high cost, it is very difficult to further promote them. Although hybrid vehicles have better power performance and longer mileage than pure electric vehicles, they are always unable t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B60L58/31B60L58/12
CPCB60L2240/54B60L58/10B60L58/40Y02T10/70Y02T90/40
Inventor 赖联锋郭玮韡郭玮翔林玉祥
Owner FUJIAN FUAN MINDONG YANAN ELECTRICAL MACHINE