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:
Dec. 18, 2007
Filed:
Aug. 28, 2003
Stanford R. Ovshinsky, Bloomfield Hills, MI (US);
Zdravjo Menjak, Rochester Hills, MI (US);
Srinivasan Venkatesan, Southfield, MI (US);
Rajeev Puttaiah, Troy, MI (US);
Hong Wang, Troy, MI (US);
Stanford R. Ovshinsky, Bloomfield Hills, MI (US);
Zdravjo Menjak, Rochester Hills, MI (US);
Srinivasan Venkatesan, Southfield, MI (US);
Rajeev Puttaiah, Troy, MI (US);
Hong Wang, Troy, MI (US);
Ovonic Fuel Cell Company, LLC, Rochester Hills, MI (US);
Abstract
The present invention discloses a fuel cell having at least one bi-cell. The bi-cells may be stacked in series to achieve a desired power output. Each bi-cell is a unit cell comprising two hydrogen electrodes, two air/oxygen electrodes, two electrolyte distributors and a gas diffuser. The hydrogen electrodes are disposed adjacent to one another and the air/oxygen electrodes are disposed on the outside ends of the hydrogen electrodes. An electrolyte distributor is disposed between each adjacently set hydrogen electrode and air/oxygen electrode. A gas diffuser/distributor is disposed between the hydrogen electrodes. An elastomeric material is injected between the electrodes and distributors to provide mechanical stability. Further, the entire bi-cell is overmolded with an elastomeric material. Ribs are set in the distributors to prevent the elastomeric material from flowing into areas designed for electrolyte flow, hydrogen flow and mechanical restraints and to promote uniform spacing between the various components. When the bi-cell units are stacked and secured, sufficient openings for air are formed to allow air to contact the air/oxygen electrodes.