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:
Nov. 11, 2014
Filed:
Sep. 13, 2010
Daniel Chatroux, Teche, FR;
Julien Dauchy, Chatte, FR;
Daniel Chatroux, Teche, FR;
Julien Dauchy, Chatte, FR;
Abstract
The invention relates to a device for controlling the voltage of a cell of a fuel cell, characterized in that said control device comprises a first transistor (Q) associated with the cell, which is connected to the cell via the base thereof and to a current generator, and a control voltage source (VRi) inserted between the cell and the first associated transistor (Q), the control voltage source supplying a control voltage equal to the voltage differential between the first and second threshold voltages, such that: when the cell has a voltage (V) higher than a first threshold voltage, the first transistor (Q) has a voltage (Vbe), at the terminals of the base-emitter junction thereof, which is higher than the second threshold voltage, and which conducts the current, and, when the cell has a voltage (V) which is lower than the first threshold voltage, the first transistor (Q) has a voltage (Vbe), at the terminals of the base-emitter junction thereof, which is lower than the second threshold voltage and which blocks the transmission of the current.