Solar Battery Charge Control Below Full State to Limit Deterioration
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Solution Overview
Problem
Existing power systems that utilize solar power generation and storage batteries can lead to battery deterioration when kept in a fully charged state, which affects their longevity and efficiency.
Innovation Solution
Implementing a power supply system with a first charge/discharge controller that sets a standard power storage amount below the fully charged state and controls power storage to this level, along with a determinator and second charge/discharge controller to adjust storage based on power generation and consumption estimates, ensuring the battery is not fully charged and maintaining its capacity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the storage battery is kept in a fully charged state to maximize power availability, then the power supply reliability is improved, but the battery deteriorates progressively reducing its lifespan
Solution Approach 1:
The patent changes the charge level parameter from 100% (fully charged) to a standard power storage amount that is smaller than fully charged. The charge/discharge controller limits the charge level to prevent the battery from reaching full charge, thereby reducing stress on the battery while maintaining sufficient power availability for normal operations.
2Quantity of substance
If the storage battery is charged to fully charged state to ensure sufficient power supply, then the power availability is improved, but the battery deterioration accelerates
Solution Approach 1:
The patent applies partial action by charging the battery only to a standard power storage amount that is less than the fully charged state. This partial charging approach provides sufficient power for normal operations without subjecting the battery to the harmful effects of repeated full charging cycles.
3Productivity
If the charge/discharge device charges the storage battery with all surplus power, then the power storage capacity is maximized, but the battery is kept in a state close to fully charged causing deterioration
Solution Approach 1:
The charge/discharge controller uses feedback control to monitor the charge level of the battery and adjusts the charging process accordingly. When the battery reaches the standard power storage amount, the controller stops further charging even if surplus power is available, preventing the battery from entering the harmful fully charged state while still maximizing power storage within safe limits.
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 prevents battery deterioration, ensures sufficient power is available for electric vehicles, and reduces the need for external power supply, thereby enhancing system efficiency and battery life.
Implementation Method 1
a solar light power generation device
Implementation Method 2
a power storage apparatus; a charge/discharge device connected with the solar light power generation device and the power storage apparatus
Data Source
AI summary
A power supply system includes a solar light power generation device; a power storage apparatus; a charge/discharge device connected with the solar light power generation device and the power storage apparatus and connectable with power loads, the charge/discharge device storing power generated by the solar light power generation device on the power storage apparatus and discharging the power stored on the power storage apparatus to the power loads; a first setter setting a standard power storage amount as an amount of power to be stored on the power storage apparatus, the standard power storage amount being smaller than a power storage amount thereof in a fully charged state; and a first charge/discharge controller controlling the charge/discharge device to store the power generated by the solar light power generation device on the power storage apparatus at a level of the standard power storage amount or smaller.