Voltage sensor for detecting cell voltages

  • US 5,652,501 A
  • Filed: 12/12/1994
  • Issued: 07/29/1997
  • Est. Priority Date: 12/12/1994
  • Status: Expired due to Term
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First Claim
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1. A voltage sensor for sensing the voltage across each of a plurality of series-connected cells, said voltage sensor comprising:

  • a plurality of differential amplifiers, each one having a pair of input terminals coupled across a corresponding one of said plurality of cells and an output terminal; and

    a network coupled to said output terminals of said plurality of differential amplifiers for providing a high cell voltage signal proportional to a relative highest voltage across one of said plurality of cells and a low cell voltage signal proportional to a relative lowest voltage across one of said plurality of cells.

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