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Fuel cell system

A fuel cell system and fuel cell technology, applied in the direction of fuel cells, fuel cell additives, transportation fuel cell technology, etc., can solve the problems of secondary battery overcharging, inappropriate power distribution, etc., and achieve the effect of suppressing overcharging

Inactive Publication Date: 2013-06-12
TOYOTA JIDOSHA KK
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] In a state where such an error occurs, the above-mentioned electric power distribution cannot be properly performed, and for example, the secondary battery may be overcharged.

Method used

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  • Fuel cell system
  • Fuel cell system

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Embodiment Construction

[0016] Embodiments of the present invention will be described below with reference to the drawings.

[0017] figure 1 It is a figure showing the structure of the main part of the fuel cell system 100 of this embodiment.

[0018] In this embodiment, a fuel cell system mounted on a vehicle such as a fuel cell vehicle (FCHV; Fuel Cell Hybrid Vehicle), an electric vehicle, or a hybrid vehicle is assumed, but it can be applied not only to vehicles but also to various mobile bodies (such as Two-wheel vehicles, ships, robots, etc.). Furthermore, the present invention is not limited to a fuel cell system mounted on a mobile body, and can be applied to a stationary fuel cell system and a portable fuel cell system.

[0019] This vehicle runs with a traction motor 61 connected to wheels 63L, 63R via a reduction gear 12 as a driving force source. The power supply of the traction motor 61 is the power supply system 1 . The DC output from the power supply system 1 is converted into a th...

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Abstract

A fuel cell system capable of providing a suitable power distribution is provided. A fuel cell system includes: a fuel cell that generates electric power through an electrochemical reaction between a fuel gas and an oxidant gas; a motor that can be driven upon the supply of electric power and can generate regenerative power; a power storage unit which can be charged with power generated from the fuel cell and regenerative power of the motor and can discharge charge power to the motor; an auxiliary apparatus used for operating at least the fuel cell; and a control unit that controls a power distribution between the above components. The control unit determines the power distribution using a power generation command value based on power required to be generated during a normal operation, while the control unit determines the power distribution using a power generation measured value of the fuel cell instead of the power generation command value during a high-potential prevention control that avoids a voltage of the fuel cell becoming equal to or higher than a predetermined high-potential prevention voltage threshold lower than an open circuit voltage of the fuel cell.

Description

technical field [0001] The present invention relates to a fuel cell system, and more particularly to a fuel cell system having an electric motor driven by electric power supply and capable of generating regenerative electric power. Background technique [0002] In recent years, a fuel cell system using a fuel cell that generates electricity through an electrochemical reaction between a fuel gas and an oxidizing gas as an energy source has attracted attention. The fuel cell system supplies high-pressure fuel gas from a fuel tank to the anode of the fuel cell, and supplies air as an oxidizing gas to the cathode under pressure, and electrochemically reacts the fuel gas and oxidizing gas to generate an electromotive force. [0003] Among such fuel cell systems, the fuel cell system used in vehicles is mainly composed of a fuel cell, a secondary battery, a travel motor, and auxiliary machines, and is operated by appropriately controlling their electric power distribution. [000...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01M8/04B60L11/18H01M8/00H02J7/00H02J7/34H01M8/10
CPCY02E60/12Y02T90/32H01M8/04559H01M16/006H01M8/04589H01M8/04619H01M2250/20B60L11/1881H01M8/04223H01M8/0488H01M10/425Y02E60/50Y02T90/34B60L11/1887B60L58/30B60L58/40Y02T90/40Y02T10/70Y02E60/10H01M8/04228
Inventor 吉田道雄马屋原健司
Owner TOYOTA JIDOSHA KK
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