Patent ID: 9673488
Date: 2017-06-06
CPC Classifications: G01R,H01M,Y02E

Claim:
1. A battery system comprising: a battery string having at least one battery cell; a measurement unit programmed to provide a measurement signal corresponding to a battery current flowing through the battery string, the measurement unit connected in series with the at least one battery cell and having a current sensor connected in series with the at least one battery cell via contact points and configured to measure the conduct a battery current flowing through the battery string via contact points, the measurement unit programmed to operate with a first reference potential of a first supply circuit; and a determination unit programmed to receive the measurement signal from the measurement unit and evaluate connected to the battery string to transmit energy via connection points that are formed separately from the contact points, the determination unit being programmed to determine the battery current flowing through the battery string during operation of the battery system, the determination unit configured to operate with a second reference potential of a second supply circuit, the second supply circuit drawing having a determination circuit that is connected, with transmission of signals, to the measurement unit and draws operational energy from the battery string via connection points that are formed separately from the contact points.