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Battery management system and battery management method

  • US 20070090798A1
  • Filed: 10/19/2006
  • Published: 04/26/2007
  • Est. Priority Date: 10/20/2005
  • Status: Active Grant
First Claim
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1. A battery management system coupled to a battery in which a plurality of battery cells are formed as one pack, wherein the battery includes a first sub-pack having first and second battery cells among the plurality of battery cells, said battery management system comprising:

  • first and second relays coupled to respective output terminals of the first and second battery cells of the first sub-pack for transmitting cell voltages to the same in response to respective first and second control signals;

    a third relay for transmitting the cell voltage received through one of the first and second relays in response to a third control signal;

    a first charging unit for storing the cell voltage transmitted from the third relay;

    a fourth relay for transmitting the cell voltage stored in the first charging unit in response to a fourth control signal; and

    , an A/D converter for converting the transmitted cell voltage of the fourth relay into digital data.

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