Battery Charging Control System for Alternator Power Optimization
Solution Overview
Problem
Existing battery charging systems for vehicles with multiple batteries of different voltages may not maximize charging power due to variations in alternator generation power and battery state of charge, leading to suboptimal energy transfer.
Innovation Solution
A battery charging control system that calculates and compares the maximum generation power of an alternator with the maximum charging power of each battery, selecting the battery with the highest chargeable power for charging, while also considering temperature corrections and maintaining battery state of charge within a predetermined range to prevent life degradation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If battery selection is based on state of charge, then charging priority can be given to batteries needing power, but the alternator may not operate at optimal generation voltage
Solution Approach 1:
The system implements dynamic selection that adapts to real-time conditions of both the alternator and batteries. Rather than using fixed criteria, the system continuously calculates chargeable power based on current generation voltage, rotation speed, and each battery's state of charge, enabling flexible optimization of both generation efficiency and charging needs.
2Ease of operation
If the alternator generates power at a fixed voltage, then the system is simple to control, but it cannot adapt to different battery charging requirements
Solution Approach 1:
The system segments the charging process by evaluating each battery individually and calculating its specific chargeable power based on its unique state of charge and voltage characteristics. This allows the alternator to selectively charge different batteries at different times, adapting to each battery's requirements while maintaining a unified control framework.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This approach maximizes charging power in battery charging systems by ensuring that the battery with the highest chargeable power is selected for charging, thereby optimizing energy recovery and extending battery life.
Implementation Method 1
an alternator that operates utilizing kinetic energy of a motor or a wheel of a vehicle and has a variable generation voltage
Data Source
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AI summary
An object of the invention is to make the charging power as high as possible in a battery charging control system for selectively charging a plurality of batteries having different voltages with energy generated by an alternator. To achieve the object, the battery charging control system according to the invention includes an alternator having a variable generation voltage and a plurality of batteries having different charging voltages, wherein maximum generation power defined as the highest power that the alternator can generate and maximum charging power defined as the highest power that each battery can accept are obtained, and a battery for which the charging power is highest is selected to be charged based on a comparison of the maximum generation power and the maximum charging power.