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Apparatus, system, and method of preventing battery rack damage by measuring current

  • US 9,373,973 B2
  • Filed: 11/12/2014
  • Issued: 06/21/2016
  • Est. Priority Date: 02/20/2014
  • Status: Active Grant
First Claim
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1. An apparatus for preventing a battery rack from being damaged by measuring a current, comprising:

  • a current measuring unit configured to measure a current value of a battery rack including a plurality of battery modules;

    a current comparing unit configured to compare whether the current value measured by the current measuring unit is greater or smaller than a predetermined current limit value;

    a relay controller configured to control operation states of a precharge relay and a main relay based on the comparison result value obtained by the current comparing unit before the operation state of the main relay is changed from an off state to an on state after the operation state of the precharge relay is changed to the on state; and

    a voltage measuring unit configured to measure a voltage value of the battery rack,wherein the apparatus for preventing a battery rack from being damaged by measuring a current is provided in one or more battery racks each, and individually performs, on a corresponding battery rack, a process of measuring a current value of the corresponding battery rack, comparing the measured current value with a predetermined current limit value, and controlling operation states of a precharge relay and a main relay of the corresponding battery rack according to a result of the comparison, and a process of measuring a voltage value of the corresponding battery rack.

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