Patent ID: 9595837
Date: 2017-03-14
CPC Classifications: B60L,G01R,H01M,H02J,Y02E,Y02T

Claim:
1. An apparatus comprising a system of batteries of electrochemical accumulators, said system comprising a plurality of electrochemical accumulators connected in series, an electrical power connection disposed to connect at least one of an electric load and a recharging power supply across said plurality of electrochemical accumulators, a control device connected to said plurality of electrochemical accumulators by said electrical power connection, a corresponding plurality of measuring circuits, each of which is attached to a respective electrochemical accumulator and configured to measure a DC voltage across terminals of said respective electrochemical accumulator, and a corresponding plurality of communication circuits, each of which is attached to a respective electrochemical accumulator and configured to modulate the DC voltage by inducing a plurality of drops in voltage across terminals of said respective electrochemical accumulator at a predetermined frequency to produce an encoded communication when said measured voltage crosses a threshold, wherein there is further included a filter module connected to the electrical power connection and to the control device and configured to produce a low voltage signal corresponding to the modulated DC voltage and wherein said control device is configured to receive the low voltage signal and to decode said encoded communication from the low voltage signal.