Battery Charge Control Using Voltage Difference Connection Logic
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Solution Overview
Problem
Existing charging control apparatuses face difficulties in easily increasing the charging amount of batteries due to the complexity of switching between batteries during charging.
Innovation Solution
A charging control apparatus that connects multiple batteries in parallel to a charger, acquires their voltages, and calculates potential differences to determine when to connect or disconnect batteries from the charger, thereby optimizing charging efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If the charging control apparatus switches between multiple batteries during charging to increase charging amounts, then the charging amount of batteries is increased, but the operation complexity increases and ease of operation deteriorates
Solution Approach 1:
The patent segments the battery charging process into distinct voltage-based stages. Instead of continuously switching between batteries, the system divides the charging process into segments where each battery is charged based on its voltage level relative to others. This segmentation allows the system to achieve comprehensive charging without complex real-time switching operations.
Solution Approach 2:
The patent changes the control parameter from continuous battery switching to discrete voltage-level-based connection control. By monitoring voltage differences and connecting/disconnecting batteries based on predetermined voltage thresholds, the system simplifies the charging operation while still achieving the goal of maximizing overall charging amount across multiple batteries.
2Quantity of substance
If the charging control apparatus continuously monitors and switches between batteries to optimize charging distribution, then the charging amount of batteries is increased, but the device complexity increases
Solution Approach 1:
The control system is segmented into simple functional blocks: voltage detection units for each battery, a comparison unit that checks voltage differences against thresholds, and connection control units. This segmentation avoids the need for complex centralized control algorithms while achieving effective battery charging management.
Solution Approach 2:
Each battery essentially controls its own charging state through the voltage-based connection mechanism. When a battery's voltage difference with others exceeds the threshold, it automatically gets disconnected from charging, and when the difference falls within the threshold, it gets connected. This self-service mechanism eliminates the need for complex external control logic.
3Ease of operation
If the charging control apparatus uses simple voltage-based connection control, then the ease of operation is improved, but the charging efficiency may be reduced compared to complex switching strategies
Solution Approach 1:
The patent optimizes the voltage difference threshold parameter to balance simplicity and efficiency. By carefully selecting the threshold value, the system ensures that batteries are connected and disconnected at appropriate voltage levels, maximizing charging efficiency while maintaining the simplicity of voltage-based control. The threshold acts as a tuning parameter that optimizes the trade-off between operational simplicity and charging performance.
Solution Approach 2:
The voltage-based connection control maintains continuous useful action by ensuring that at least one battery remains connected to the charger at all times. When one battery's voltage rises above the threshold, another battery with lower voltage is automatically connected, ensuring uninterrupted charging flow and maintaining high charging efficiency throughout the process.
Data Source
AI summary
Provided is a charge control device with which the charge amount of a battery is easily raised. This charge control device comprises: a connection unit for connecting a plurality of batteries in parallel to a charger connected to a vehicle; an acquisition unit for acquiring the voltage of the plurality of batteries; and a control unit for calculating a difference in potential between a connected battery that is connected to the charger and an unconnected battery that is not connected to the charger, among the plurality of batteries, on the basis of the voltage acquired by the acquisition unit and controlling the connection unit so as to furthermore connect the unconnected battery to the charger when the difference in potential is not within a prescribed potential range.