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Circuit arrangement for monitoring the state of charge of an accummulator

  • US 6,850,034 B2
  • Filed: 08/10/2001
  • Issued: 02/01/2005
  • Est. Priority Date: 08/12/2000
  • Status: Expired due to Fees
First Claim
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1. A circuit configuration for monitoring a state of charge of a battery situated in a motor vehicle, the circuit configuration comprising:

  • a control unit for recording and evaluating a flow of current out of or into the battery, the control unit being adapted to be shifted into a state with low current consumption, the control unit being further adapted to be brought out of the state with low current consumption by an activation signal; and

    a sensor for emitting a signal in response to a flow of current out of or into the battery, the sensor coupled to at least one primary winding of a transformer, the primary winding being coupled to a lead of the battery and being used to detect a flow of current in the lead.

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