Charge control microcomputer device for vehicle
First Claim
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1. A charge control microcomputer device for a vehicle, comprising:
- an AC generator driven by an internal combustion engine installed on a vehicle, said generator having a field coil and armature coils;
a battery charged by a rectified output of said generator;
a starter motor driven by said battery, for starting said engine;
a voltage regulator for controlling the current flowing in said field coil, to control an output voltage of said generator to a predetermined value;
a battery sensor for detecting at least one of a solution temperature, specific gravity or acidity of said battery;
a charge-discharge current sensor for detecting a charge or discharge current of said battery;
an engine controlling microcomputer for processing engine data; and
a charge controlling microcomputer for processing, storing and reading data from said battery sensor, data from said charge-discharge current sensor, generated voltage data from said generator, battery terminal voltage data, and engine data from said engine controlling microcomputer, to produce a reference voltage signal to provide said predetermined value for said voltage regulator.
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Abstract
A charge control system for a vehicle is provided with a microcomputer which calculates the most suitable battery charging value or voltage regulator set value on the basis of detected engine and charging system parameters. The microcomputer uses parameters such as the charging condition and service life condition of the battery, along with the instantaneous generated voltage, etc., and outputs the calculated set value to the voltage regulator of the charging system.
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Citations
5 Claims
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1. A charge control microcomputer device for a vehicle, comprising:
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an AC generator driven by an internal combustion engine installed on a vehicle, said generator having a field coil and armature coils; a battery charged by a rectified output of said generator; a starter motor driven by said battery, for starting said engine; a voltage regulator for controlling the current flowing in said field coil, to control an output voltage of said generator to a predetermined value; a battery sensor for detecting at least one of a solution temperature, specific gravity or acidity of said battery; a charge-discharge current sensor for detecting a charge or discharge current of said battery; an engine controlling microcomputer for processing engine data; and a charge controlling microcomputer for processing, storing and reading data from said battery sensor, data from said charge-discharge current sensor, generated voltage data from said generator, battery terminal voltage data, and engine data from said engine controlling microcomputer, to produce a reference voltage signal to provide said predetermined value for said voltage regulator. - View Dependent Claims (2, 3, 4, 5)
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Specification