Power Reception Priority Control for Battery Charge Balancing
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Solution Overview
Problem
Existing power reception control methods do not account for user demands when distributing electric power among power storage elements, leading to inefficiencies in sharing power and leveling the state of charge across these elements.
Innovation Solution
A power reception control method that calculates a degree of priority for each power storage element based on user demands, such as remaining time or target state of charge, to adjust the differential electric power received, ensuring suitable power sharing and state of charge leveling.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If differential electric power is shared equally among power storage elements, then the control system is simple, but user demands are not reflected in power distribution
Solution Approach 1:
The patent introduces a priority coefficient as a variable parameter that changes based on user demand. Each power storage element is assigned a priority coefficient reflecting user preferences (e.g., remaining time, target state of charge), and the differential electric power is distributed proportionally according to these coefficients. This transforms the equal-sharing control mechanism into an adaptive one that responds to user demands without requiring complex centralized control.
2Ease of operation
If power distribution ignores user demands, then the control mechanism is straightforward, but power sharing efficiency is reduced
Solution Approach 1:
Each power storage element independently calculates its own power reception amount by multiplying the differential electric power by its assigned priority coefficient. This self-service mechanism allows elements to autonomously adjust their power intake according to user demands without requiring complex inter-element coordination or centralized control, thereby maintaining operational simplicity while improving power sharing efficiency.
3Device complexity
If equal power sharing is implemented, then control is uniform and simple, but state of charge leveling is insufficient
Solution Approach 1:
The patent applies local quality by allowing each power storage element to have its own priority coefficient that reflects its specific state and user demands. Elements with lower state of charge or higher user priority receive proportionally more power, creating a differentiated distribution pattern that effectively levels state of charge across elements while maintaining a relatively simple control framework.
Data Source
AI summary
A power reception control method for a power storage element controls element-receiving electric power received by the power storage element in an electric power system for supplying electric energy to a load group including plural power storage elements. The power reception control method acquires differential electric power by subtracting a current value of total transmitted electric power from a maximum value of the total transmitted electric power that is an available amount to be supplied to the entire load group via an electric power supply base point, calculates a degree of priority of the power storage element in accordance with a numerical value indicating a demand of a user, multiplies the differential electric power by the degree of priority to calculate element differential electric power, and adds the element differential electric power to the previous element-receiving electric power so as to update the element-receiving electric power.


