Power Storage Controller Discharge Segmentation
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Solution Overview
Problem
Existing power supply systems that utilize storage batteries for load leveling and cost reduction often prioritize cost over effective battery usage, leading to battery degradation and inefficiencies due to inaccurate simulation and charging/discharging methods.
Innovation Solution
A power supply system with a power storage unit controller that sets discharging and charging times into unit times, determining electric energy to be supplied during each unit time to optimize battery usage and reduce degradation, allowing for accurate and adaptive control of battery discharge and charge levels.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If simulation accuracy is improved to optimize charging/discharging control, then battery usage effectiveness is improved, but device complexity and power consumption increase
Solution Approach 1:
The patent divides the continuous charging/discharging control into discrete time segments (unit times). The controller segments the operation into specific time intervals where the battery operates in distinct modes (charging, discharging, or idle), simplifying the control logic while maintaining optimization effectiveness. This segmentation approach reduces computational complexity compared to continuous simulation while achieving practical optimization results.
2Productivity
If continuous charging/discharging control is implemented to maximize battery utilization, then productivity is improved, but battery degradation accelerates
Solution Approach 1:
The patent implements periodic charging and discharging cycles with specific time intervals. The controller alternates between charging mode, discharging mode, and idle mode in predetermined time sequences. This periodic operation prevents continuous high-rate charging/discharging that would cause excessive heat and degradation, while still achieving high battery utilization through optimized cycle management. The periodic rest periods allow the battery to stabilize and recover.
3Power
If high power output is maintained to meet peak demand, then power is improved, but battery degradation is promoted
Solution Approach 1:
The patent employs dynamic power adjustment where the battery output power varies over time based on system needs and battery state. The controller dynamically modifies charging/discharging rates within each time segment, reducing power stress during critical phases. This dynamic operation allows the system to meet peak power demands when necessary while avoiding sustained high-power operation that would cause degradation, adapting the power output to actual requirements rather than maintaining constant high power.
Data Source
AI summary
[Problem] To provide a power supply system which effectively utilizes a power storage unit and also limits degradation of the power storage unit.[Solution] A power supply system (1) is provided with: a power storage unit (2) for charging supplied electric power and supplying the charged electric power by means of discharge; and a power storage unit controller (3) for controlling the discharging of the power storage unit (2). The power storage unit controller (3) sets a discharge period during which the power storage unit (2) can be discharged. Furthermore, during the discharge period, the power storage unit controller (3) determines the electric energy to be supplied by means of the discharging of the power storage unit (2) during the remaining discharge period on the basis of the remaining discharge period and the electric energy that can be discharged by the power storage unit (2).