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Voltage measuring apparatus and battery management system including the same

  • US 9,553,462 B2
  • Filed: 02/25/2014
  • Issued: 01/24/2017
  • Est. Priority Date: 02/25/2013
  • Status: Active Grant
First Claim
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1. A battery management system for managing a battery pack including a plurality of battery cells coupled to each other in series, the battery management system comprising:

  • a voltage measuring apparatus including a first node coupled to one of a positive electrode and a negative electrode of a battery cell among battery cells serving as a voltage measuring target and a second node coupled to a remaining one of the positive electrode and the negative electrode, and configured to amplify a voltage difference between the first node and the second node to generate an error voltage, to convert the error voltage to generate a digital signal, and to compensate a polarity of the digital signal; and

    a controller configured to receive a correction digital signal having a compensated polarity to control charge and discharge of the battery pack.

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