公开(公告)号：US20060093880A1

公开(公告)日：2006-05-04

申请号：US11264933

申请日：2005-11-02

申请人： Daishi Igarashi ,  Yoshikazu Murakami ,  Junji Uehara ,  Kenichiro Ueda ,  Dai Saitoh ,  Chihiro Wake

发明人： Daishi Igarashi ,  Yoshikazu Murakami ,  Junji Uehara ,  Kenichiro Ueda ,  Dai Saitoh ,  Chihiro Wake

IPC分类号： H01M8/04

CPC分类号： H01M8/04343 ,  H01M8/04328 ,  H01M8/0435 ,  H01M8/04358 ,  H01M8/04365 ,  H01M8/04552 ,  H01M8/04873 ,  H01M8/04955 ,  H01M8/04992

摘要： A fuel cell system and an idle stop controlling method for the fuel cell system. The fuel cell system includes: a fuel gas supply means for supplying fuel gas; an oxidant gas supply means for supplying oxidant gas; a fuel cell to which the fuel gas and the oxidant gas are supplied for generation of electricity; an idle stop means for stopping generation of electricity by the fuel cell to perform idle stop; and an unstable state detection means for detecting whether the generation of electricity by the fuel cell is unstable. If the unstable state detection means detects that generation of electricity by the fuel cell is unstable, idle stop by the idle stop means is prohibited so that the fuel cell continues to generate electricity.

公开(公告)号：US20050142396A1

公开(公告)日：2005-06-30

申请号：US11019503

申请日：2004-12-21

申请人： Daishi Igarashi ,  Kenichiro Kimura ,  Yoshikazu Murakami ,  Chirhiro Wake ,  Kenichiro Ueda

发明人： Daishi Igarashi ,  Kenichiro Kimura ,  Yoshikazu Murakami ,  Chirhiro Wake ,  Kenichiro Ueda

IPC分类号： H01M8/10 ,  H01M8/00 ,  H01M8/04

CPC分类号： H01M8/04552 ,  H01M8/04589 ,  H01M8/0491

摘要： A current limiting system for fuel cells, which limits electric current generated by a fuel cell stack including a plurality of single cells generating electricity by a chemical reaction between fuel gas and oxidant. The current limiting system includes: a cell voltage detector which detects a cell voltage of each single cell; a current detector which detects a generated current taken out from the fuel cell stack; an input device through which are inputted the cell voltage and the generated current value; a target current limit value setting device which sets a target current limit value for limiting the generated current taken out from the fuel cell stack in accordance with the cell voltage; a current limit value setting device which sets a current limit value by replacing a present current limit value with the target current limit value when a difference between the present current limit value and the generated current value becomes smaller than a first predetermined value; and an output device which outputs the current limit value either to a current limiter for limiting the generated current in accordance with the current limit value or to an electric power consumption controller for controlling electric power consumption of loads that consume the generated current.

摘要翻译： 一种用于燃料电池的电流限制系统，其限制由包括燃料气体和氧化剂之间的化学反应而发电的多个单电池的燃料电池堆产生的电流。 电流限制系统包括：电池电压检测器，其检测每个单电池的电池电压; 电流检测器，其检测从所述燃料电池堆取出的产生的电流; 输入设备，通过该输入设备输入单元电压和所生成的电流值; 目标电流限制值设定装置，其根据电池电压设定用于限制从燃料电池堆取出的发电电流的目标电流极限值; 电流限制值设定装置，其在当前电流限制值与所生成的电流值之间的差变得小于第一预定值时，通过将目前电流限制值替换为目标电流限制值来设定电流限制值; 以及输出装置，其将电流限制值输出到用于限制根据电流限制值的发电电流的限流器，或者输出到用于控制消耗所产生的电流的负载的电力消耗的电力消耗控制器。

公开(公告)号：US06815104B2

公开(公告)日：2004-11-09

申请号：US10722690

申请日：2003-11-24

申请人： Junji Uehara ,  Kenichiro Ueda ,  Yoshikazu Murakami ,  Masanori Hayashi ,  Yuji Matsumoto ,  Daishi Igarashi

发明人： Junji Uehara ,  Kenichiro Ueda ,  Yoshikazu Murakami ,  Masanori Hayashi ,  Yuji Matsumoto ,  Daishi Igarashi

IPC分类号： H01M804

CPC分类号： H01M8/04089

摘要： A method for controlling the flow rate of an oxidizer in a fuel cell system having a fuel cell stack being supplied with fuel and the oxidizer, a compressor for supplying the oxidizer to the fuel cell stack, a back pressure valve for controlling pressure of the oxidizer, and a control device for controlling the fuel cell stack, the compressor, and the back pressure valve. The method includes the steps of calculating an oxidizer pressure command and an oxidizer flow rate command based on a given electrical current command, comparing a first flow rate that is defined as an upper limit of oxidizer flow rate and a second flow rate that is defined as a lower limit of oxidizer flow rate with the oxidizer flow rate command, and regulating the oxidizer flow rate command so as to be limited within a range from the second flow rate to the first flow rate.