Circuit arrangement for monitoring the state of charge of an accummulator
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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Abstract
A circuit configuration for monitoring the state of charge of an accumulator battery, which is installed in particular in a motor vehicle, has a control unit that records and evaluates the flow of current out of or into the accumulator battery. The control unit is able to be shifted into a state with low current consumption (sleep mode), out of which it may be brought again by an activation signal. Moreover, a sensor is provided that emits a signal in response to a flow of current out of or into the accumulator battery.
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5 Claims
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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:
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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. - View Dependent Claims (2, 3, 4, 5)
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Specification