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Battery system

  • US 9,897,662 B2
  • Filed: 04/15/2013
  • Issued: 02/20/2018
  • Est. Priority Date: 04/15/2013
  • Status: Active Grant
First Claim
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1. A battery system, comprising:

  • a battery module that includes a plurality of battery assemblies, wherein each of the battery assemblies includes battery cells;

    battery monitoring circuits communicatively coupled to each of the plurality of battery assemblies of the battery module, wherein the battery monitoring circuits monitor a status of each of the battery cells;

    a control circuit communicatively coupled to each of the battery monitoring circuits via a first signal transmission path, wherein—

    the first signal transmission path is isolated from the control circuit by a first isolation element and is isolated from the battery monitoring circuits by a second isolation element;

    an isolated power supply that powers a first side of the first isolation element, wherein the battery monitoring circuits are connected via the first side of the first isolation element;

    a power supply that powers a second side of the first isolation element and the control circuit, wherein the control circuit is connected via the second side of the first isolation element; and

    a switch that controls a power output of the isolated power supply based on a signal from the control circuit,wherein a first electrical potential of the first signal transmission path is a floating potential in relation to an electrical potential of the control circuit and electrical potentials of the battery monitoring circuits.

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