Battery Power Control for Engine Restart Under Load Demand
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Solution Overview
Problem
Existing electric power control systems in moving objects, such as aircraft, cannot simultaneously supply power for engine restart and power to electric loads without increasing the number of batteries, which in turn increases weight and reduces fuel efficiency.
Innovation Solution
An electric power control device that acquires information on the maximum power output of a battery and a requested power value, determines a suppliable power value for starting the internal combustion engine, and controls the power system to start the engine using this determined power value, thereby allowing the battery to supply power to both the engine and electric loads.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Power
If a separate battery is used to supply power to electric loads during engine restart, then the power supply capability is improved, but the number of batteries increases and weight increases
Solution Approach 1:
The existing battery is made to perform multiple functions: it supplies power for engine restart and simultaneously supplies power to electric loads. The control unit manages the battery's power distribution to both the starting mechanism and electric loads based on their respective power requirements, eliminating the need for a separate battery for load power supply.
2Power
If a separate battery is used to supply power to electric loads during engine restart, then the power supply capability is improved, but the number of batteries increases and fuel efficiency deteriorates
Solution Approach 1:
The existing battery is made to perform multiple functions: it supplies power for engine restart and simultaneously supplies power to electric loads. The control unit manages the battery's power distribution to both the starting mechanism and electric loads based on their respective power requirements, eliminating the need for a separate battery for load power supply.
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 solution enables the battery to supply power for engine restart and electric loads without increasing the number of batteries, thus maintaining fuel efficiency and reducing weight.
Implementation Method 1
a battery configured to be charged by electric power output from the power generator
Implementation Method 2
an internal combustion engine configured to drive a power generator
Data Source
AI summary
An electric power control device includes an acquisition unit configured to acquire information indicating a maximum power value that is a maximum value of electric power that can be output from a battery without causing an excessive output voltage drop and information indicating a requested power value, a determination unit configured to determine a suppliable power value indicating electric power that can be supplied from the battery to a starting mechanism when starting a stopped internal combustion engine, based on a difference between a maximum power value and a requested power value, and a control unit configured to start the internal combustion engine using electric power corresponding to the suppliable power value determined by the determination unit.