Patent ID: 9012099
Filing Date: 2015-04-21
Classification: G01R,H01M,H02J,Y02E

Abstract:
1. An electrochemical system including a stack of electrochemical units connected in series, wherein the system is controlled by a control circuit and includes a plurality of differential amplifiers, each connected by two inputs to the terminals of an electrochemical unit, so as to supply a voltage representative of the potential difference between the terminals of said electrochemical unit, each representative voltage is sent to a control unit arranged for converting said representative voltage into a numerical value transmitted to the control circuit, wherein the system further includes, between each differential amplifier and the control unit, a buffer means controlled by the control circuit, the buffer means being capable of saving the voltage representative of the potential difference present between the terminals of the electrochemical unit connected thereto, and wherein the voltage is saved simultaneously by all of the buffer means, wherein each buffer means includes first switching means and second switching means series connected between the amplifier to which the buffer means is connected and the control unit, wherein each buffer means further includes a capacitor, the input of which is connected to the point of connection between the first and second switching means, and thus the output is connected to a reference point, and wherein all of the second switching means are grouped together in the form of a multiplexer, each input of which is connected to the first switching means of a buffer means, the output of the multiplexer being connected to an input of the control unit.