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    • 8. 发明申请
    • Fuel cell system and vehicle with fuel cell system mounted thereon
    • 具有燃料电池系统的燃料电池系统和车辆
    • US20080152987A1
    • 2008-06-26
    • US10809511
    • 2004-03-26
    • Tomoaki NakashimaHaruyuki NakanishiShinichi Matsumoto
    • Tomoaki NakashimaHaruyuki NakanishiShinichi Matsumoto
    • H01M8/04
    • H01M8/249H01M8/04089H01M8/04126H01M8/0432H01M8/04492H01M8/04559H01M8/04589H01M8/04619H01M8/04649H01M8/04761H01M8/241H01M8/2483
    • A fuel cell system of the invention includes a tubular switching member 70 with slits 70a to shift their position and thereby vary an opening area of outlets of oxidizing gas conduits 36 in respective unit fuel cells 30 constituting a fuel cell stack 20. The system further includes a drive roller 74 and a stepping motor 79 that function to change over the position of the slits 70a. An electronic control unit controls rotation of the stepping motor 79 to actuate the tubular switching member 70 first to narrow the opening area of the outlets of the oxidizing gas conduits 36 to or toward 0 and then to widen the opening area of the outlets of the oxidizing gas conduits 36, thereby generating pulsation in the oxidizing gas conduits 36. Water droplets flocculated in the oxidizing gas conduits 36 are thus discharged to the outlets with high efficiency. The structure of the embodiment does not require any bypass in the respective unit fuel cells 30. The characteristic structure of the invention uses the frame of the unit fuel cell 30 equivalent to the existing one and does not substantially increase the size of the fuel cell stack 20.
    • 本发明的燃料电池系统包括管状切换构件70,其具有狭缝70a以使其位置偏移,从而改变构成燃料电池堆20的各个单位燃料电池30中的氧化气体导管36的出口的开口面积。系统进一步 包括用于切换狭缝70a的位置的驱动辊74和步进马达79。 电子控制单元控制步进电动机79的旋转,首先致动管状切换构件70,使氧化剂气体导管36的出口的开口面积缩小到0°,然后扩大氧化剂的出口的开口面积 气体管道36,从而在氧化气体导管36中产生脉动。因此,氧化气体管道36中絮凝的水滴以高效率排放到出口。 本实施例的结构在相应的单元燃料电池30中不需要任何旁路。本发明的特征结构使用与现有燃料电池相当的单元燃料电池30的框架,并且基本上不增加燃料电池堆的尺寸 20。