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:
Oct. 18, 2005
Filed:
Feb. 27, 2002
Koudai Yoshizawa, Yokosuka, JP;
Akihiro Iiyama, Zushi, JP;
Shugo Higashi, Yokoama, JP;
Patrick L. Hagans, Columbia, CT (US);
Koudai Yoshizawa, Yokosuka, JP;
Akihiro Iiyama, Zushi, JP;
Shugo Higashi, Yokoama, JP;
Patrick L. Hagans, Columbia, CT (US);
Nissan Motor Co., Ltd., Kanagawa, JP;
UTC Fuel Cells, LLC, South Windsor, CT (US);
Abstract
A fuel cell system includes a fuel cell () having a water passage and passage for gas required for power generation, a first protection device () which prevents freezing of water in the fuel cell by maintaining the temperature of the fuel cell (), and a second protection device () which prevents freezing of water in the fuel cell by discharging the water in the fuel cell (). A controller () selects one of the first protection device () and the second protection device () as the protection device to be used when the fuel cell () has stopped, and the fuel cell () is protected from freezing of water by operating the selected protection device.