The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Mar. 25, 2008
Filed:
Mar. 12, 2004
Naoyuki Enjoji, Utsunomiya, JP;
Norimasa Kawagoe, Utsunomiya, JP;
Masaharu Suzuki, Utsunomiya, JP;
Yoshinori Wariishi, Utsunomiya, JP;
Naoyuki Enjoji, Utsunomiya, JP;
Norimasa Kawagoe, Utsunomiya, JP;
Masaharu Suzuki, Utsunomiya, JP;
Yoshinori Wariishi, Utsunomiya, JP;
Honda Motor Co., Ltd., Tokyo, JP;
Abstract
A humidity sensor is disposed in a circulation passage as a passage of a hydrogen gas supplied to an anode of a fuel cell stack. A load current setting unit determines a level of electrical current supplied to a load. A flow rate controller controls a compressor based on the humidity detected by the humidity sensor and the load current determined by the load current setting unit to regulate a flow rate of the air supplied to a cathode of the fuel cell stack for maintaining the humidity of the hydrogen gas within a predetermined range less than 100%. The fuel cell stack generates the load current efficiently without discharging the hydrogen gas to the outside.