Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Fuel cell system, and vehicle equipped with the fuel cell system

A fuel cell system and fuel cell technology, applied in the field of vehicles, can solve problems such as overcharging of secondary batteries, weakening the durability of secondary batteries, etc., and achieve the effect of avoiding the overcharged state

Inactive Publication Date: 2012-03-14
TOYOTA JIDOSHA KK
View PDF5 Cites 7 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

If the secondary battery is charged in a manner such as high-rate charging, charging from a high SOC (state of charge), charging at a low temperature (for example, 0° C.) (charging in a high-resistance state), etc., the secondary battery sometimes becomes have to be overcharged, which impairs the durability of the secondary battery

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
  • Fuel cell system, and vehicle equipped with the fuel cell system
  • Fuel cell system, and vehicle equipped with the fuel cell system
  • Fuel cell system, and vehicle equipped with the fuel cell system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0027] Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings.

[0028] as in figure 1 As shown in , a fuel cell system 100 installed in an electric vehicle 200 includes a chargeable and dischargeable secondary battery 12, a step-up / step-down voltage converter 13 that raises or lowers the voltage of the secondary battery 12, a The DC power of the step-up / step-down voltage converter 13 is converted into AC power and supplies power to the inverter 14 and the fuel cell 11 of the traction motor 15 .

[0029]The secondary battery 12 is constructed of a rechargeable and dischargeable lithium ion storage battery or the like. The voltage of the secondary battery 12 is lower than the drive voltage of the traction motor 15 in this embodiment. However, the voltage of the secondary battery is not so limited, but may also be a voltage equal to or higher than the drive voltage of the traction motor. The step-up / step-down voltage c...

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

A fuel cell system (100) comprising a fuel cell (11) that generates electricity through an electrochemical reaction between a fuel gas and an oxidant gas, and a control portion (50) that controls amount of electricity generation at a time of starting the fuel cell (11), characterized in that the control portion (50) has voltage drop control means for controlling speed of dropping a starting voltage of the fuel cell (11) from an open-circuit voltage to a high-potential-avoiding voltage according to an initial voltage of the fuel cell (11) and to a pre-determined threshold voltage that is lower than the high-potential-avoiding voltage, when the starting voltage of the fuel cell (11) is dropped from the open-circuit voltage to the high-potential-avoiding voltage.

Description

technical field [0001] The present invention relates to a fuel cell system, and a vehicle equipped with the fuel cell system. Background technique [0002] Considering now the practical application of a fuel cell that supplies hydrogen as a fuel gas to a fuel electrode and air as an oxidant gas to an oxidizer electrode, and generates water at the oxidant electrode while generating water at the oxidant electrode Electrochemical reactions generate electricity. [0003] In such a fuel cell, if at the start of operation, the pressure of hydrogen supplied to the fuel electrode and the pressure of air supplied to the oxidizer electrode are approximately equal to the respective pressures that occur during normal operation, hydrogen and air sometimes occur. are non-uniformly distributed in the fuel electrode and the oxidant electrode, respectively, and the electrodes are degraded by electrochemical reactions caused by the non-uniform distribution of these gases. Japanese Patent Ap...

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): H01M16/00B60L11/18H01M8/04
CPCB60L58/31B60L58/40H01M8/04559H01M8/04589H01M8/0491H01M10/44H01M10/46H01M16/003H01M2250/20Y02E60/10Y02E60/50Y02T10/70Y02T90/40
Inventor 吉田道雄今井敦志小川朋也
Owner TOYOTA JIDOSHA KK
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com