Method for measuring the charge state of an accumulator and a device for implementing such method
First Claim
1. A method for measuring the charge state of an electric storage battery intended to be connected to an electric starting motor for an internal combustion engine, comprising the steps of:
- measuring and storing the voltage at the terminals of the battery before connection to the motor;
detecting during each connection of the motor the temporary maximum voltage drop at the terminals of the battery;
storing the result of the detection; and
displaying the result of this detection.
1 Assignment
0 Petitions
Accused Products
Abstract
The present invention provides a method for measuring the charge state of an accumulator and a device for implementing such method.
The method consists in measuring the temporary voltage drop at the terminals of the accumulator during delivery of a high current. The device for measuring this maximum voltage drop comprises a first maximum detector (43) supplying a voltmeter (42) and connected to the output terminal of a subtractor (44) whose so-called inverting input is connected to the accumulator through a filter (45) and whose so-called non inverting input is connected to the accumulator through a second maximum detector (46).
Application to measuring the charge state of an accumulator.
12 Citations
10 Claims
-
1. A method for measuring the charge state of an electric storage battery intended to be connected to an electric starting motor for an internal combustion engine, comprising the steps of:
-
measuring and storing the voltage at the terminals of the battery before connection to the motor; detecting during each connection of the motor the temporary maximum voltage drop at the terminals of the battery; storing the result of the detection; and displaying the result of this detection. - View Dependent Claims (2)
-
-
3. A device for measuring the state charge of an electric storage battery intended to be connected to an electric starting motor, comprising:
-
means (46) for measuring and storing the voltage at the terminals of the battery before connection to the motor; means (34) for connecting the battery to the motor (40) and means (43, 44, 45,
46) for detecting the maximum temporary filtered voltage drop at the terminals of the battery;means (43) for storing the result of the detection; and means (42) for displaying the result of this detection. - View Dependent Claims (4, 5, 6, 7, 8, 9, 10)
-
Specification