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. 07, 2010
Filed:
Mar. 29, 2006
Junqing Dong, Guangdong, CN;
Yong Zhou, Guangdong, CN;
Junqing Dong, Guangdong, CN;
Yong Zhou, Guangdong, CN;
BYD Company Limited, Shenzhen, Guangdong, CN;
Abstract
Disclosed is a flow-field plate and fuel cell stack using the same. The flow-field plate of the present invention comprises a center hole () formed at the center of the flow-field plate, a inlet () and a outlet () formed on two positions near the outer edge of the flow-field plate, and flow grooves extending radially from the center hole () on one side of the flow-field plate. Since the flow-field plate according to the present invention may comprise flow grooves extending radially and having short flow path, which is benefit for reactants diffusion, there is no 'dead-end' on the flow-field plate and reactants may distribute uniformly to each part of flow-field plate. Furthermore, resultants generated from reaction, such as water, nitrogen, carbon dioxide, etc., may be discharged in time and not accumulate on flow-field plate. Therefore, the reactant utilization ratio, the fuel cell performances and its service life may be improved.