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Connectivity check between cells and wiring control electronics with only one switch

  • US 10,236,695 B2
  • Filed: 12/21/2016
  • Issued: 03/19/2019
  • Est. Priority Date: 12/22/2015
  • Status: Active Grant
First Claim
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1. A rechargeable energy storage system comprising a string of rechargeable energy storage cell modules in series, each cell module comprising:

  • connections for connecting to an individual rechargeable energy storage cell or plurality of rechargeable energy storage cells,a controllable switch for use in a connection check,a monitoring and control circuit adapted for measuring a cell module voltage, anda filter circuit,the rechargeable energy storage system further comprising;

    a single common connection between a terminal of a rechargeable energy storage cell and the monitoring and control circuit within each module,wherein the rechargeable energy storage system is adapted such that when all connections of the rechargeable energy storage system are intact, there is no change in voltage measurements through the monitoring and control circuit when the switch is open and when the switch is closed, whereas a deviation in the voltage measurements measured by the monitoring and control circuit when the switch is open and closed is an indication of a bad connection, wherein the switch is closed and the filter circuit is charged in case of a bad connection.

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