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BATTERY VOLTAGE MONITOR CIRCUIT

  • US 20130234720A1
  • Filed: 02/25/2013
  • Published: 09/12/2013
  • Est. Priority Date: 03/07/2012
  • Status: Active Grant
First Claim
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1. A battery voltage monitor circuit for monitoring a voltage of a plurality of secondary batteries, the battery voltage monitor circuit comprising:

  • a first logic circuit part that selects a first secondary battery from the plural secondary batteries according to a first command signal supplied from an external device;

    a first reference voltage generation part that generates a first reference voltage;

    a first AD conversion part that digitalizes a voltage of both ends of the first secondary battery into a first digital signal by using the first reference voltage;

    a first communication part that transmits the first digital signal to the external device;

    a second logic part that selects a second secondary battery from the plural secondary batteries according to a second command signal supplied from the external device;

    a second reference voltage generation part that generates a second reference voltage;

    a second AD conversion part that digitalizes a voltage of both ends of the second secondary battery into a second digital signal by referring to the second reference voltage; and

    a second communication part that transmits the second digital signal to the external device.

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