Shunt connection to a PCB of an energy management system employed in an automotive vehicle

  • US 7,319,304 B2
  • Filed: 07/23/2004
  • Issued: 01/15/2008
  • Est. Priority Date: 07/25/2003
  • Status: Active Grant
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First Claim
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1. An apparatus for monitoring the condition of a storage battery while the storage battery is coupled in parallel to an electrical system of an operating vehicle, comprising:

  • a first electrical connection directly coupled to a positive terminal of the battery;

    a second electrical connection directly coupled to a negative terminal of the battery, the first and second electrical connections coupled to a voltmeter to measure a time varying voltage across the battery;

    a third electrical connection directly coupled to the positive terminal of the battery;

    a fourth electrical connection directly coupled to a negative terminal of the battery, the third and fourth electrical connections coupled to a forcing function having a time varying component;

    a printed circuit board (PCB);

    a shunt current sensor electrically in series with the battery, wherein the shunt current sensor is mounted on the PCB by;

    (a) coupling flexible electrical connectors to the shunt current sensor; and

    (b) soldering the flexible electrical connectors to connection points on the PCB;

    a microprocessor, mounted on the PCB, configured to determine the condition of the battery as a function of a dynamic parameter of the battery based upon the measured voltage, the forcing function and a current sensed by the shunt current sensor, andan insulating member between the PCB and the shunt, the insulating member comprising grooves through which the flexible electrical connectors are inserted,wherein the insulating member is a part of a housing that encloses the printed circuit board.

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