Method for controlling output power of vehicular fuel cell system

A fuel cell system and output power technology, applied in the direction of fuel cell control, fuel cell additives, electric traction, etc., can solve the problems of high control precision and slow response time, and achieve the effect of high control precision and fast control response speed

Inactive Publication Date: 2006-12-27
TSINGHUA UNIV
View PDF0 Cites 23 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In this control method, the control response time is slower than the previous method, which can reach tens of milliseconds to hundreds of milliseconds; but the control accuracy is high. Through control, the difference between the actual output power of the fuel cell system and the target output power Between hundreds of watts and thousands of watts; neither control method provides direct control over the output power of the fuel cell system

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 more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Method for controlling output power of vehicular fuel cell system
  • Method for controlling output power of vehicular fuel cell system
  • Method for controlling output power of vehicular fuel cell system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0020] refer to Figure 4 , Figure 4 It is a schematic diagram of the control method of the output power of the vehicle fuel cell system proposed by the present invention. A method for controlling the output power of a vehicle fuel cell system, the method uses a DC / DC converter to directly control the output of the fuel cell output power, specifically as follows: figure 1 In the fuel cell power system shown, the vehicle controller calculates the target torque of the motor according to the driver's driving intention (key signal, accelerator pedal signal, brake pedal signal, gear signal), and at the same time calculates According to the power demand of the motor, the target output power of the fuel cell system is obtained according to the power demand of the motor and the working status signal of the battery, and the target input voltage of the DC / DC converter is obtained according to the relationship between the output power of the fuel cell and the output voltage , and send...

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

No PUM Login to view more

Abstract

Disclosed is an output power control method for a fuel cell system of a vehicle belonging to fuel cell automobile research and development technology field. A vehicle controller can compute a target torque of a motor according to a driver's intentions (such as key signal, accelerator pedal signal, brake pedal signal, gearshift signal), compute the motor power demand according to the motor rotation speed, and obtain a target output power of the fuel cell system according to the motor power demand and work state signals of the cell; then the vehicle controller can obtain a target input voltage of a DC/DC transformer according to the relationship between the fuel cell output power and output voltage, and send the instruction to the DC/DC transformer. The DC/DC transformer can perform PI closed loop control according to the target input voltage and actual output current, so as to realize direct control on the output power of the fuel cell system. The invention has high control precision, high response speed.

Description

technical field [0001] The invention relates to a method for controlling the output power of a vehicle fuel cell system, and belongs to the technical field of research and development of fuel cell vehicles. Background technique [0002] Since fuel cell vehicles have excellent performances such as low noise, high efficiency and zero emissions, they are widely considered to be the development trend of the future automobile industry. Automobile research and development has become a major measure to promote the leapfrog development of my country's automobile industry. The technology related to fuel cell vehicle power system is one of the key technologies in the field of fuel cell vehicle research and development. [0003] Fuel cell power system is the core part of fuel cell vehicles, the key to determine the performance of fuel cell vehicles, and also an important symbol of its difference from traditional internal combustion engine vehicles, battery electric vehicles and gasolin...

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
no application Login to view more
Patent Type & Authority Applications(China)
IPC IPC(8): B60L11/18H01M8/04H01M8/04298
CPCY02E60/50
Inventor 高大威卢青春金振华
Owner TSINGHUA UNIV
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap