Charge Control Device Voltage Drop Detection
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing charge control systems for storage devices driven by environmental energy face challenges in accurately determining charging timing due to variable stored power levels, leading to potential overcharging or insufficient charging, especially when the voltage changes are small, and are prone to noise interference.
Innovation Solution
A charge control device that utilizes a voltage drop in the storage section caused by resistance and load current to determine when to charge, setting upper and lower limit voltages to monitor and control charging, ensuring the storage section is kept above the upper limit voltage to maintain stable power supply.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If voltage monitoring is used to determine charging timing, then charging can be controlled based on storage device state, but noise interference makes it difficult to detect small voltage changes accurately
Solution Approach 1:
The patent introduces a voltage drop detection mechanism as an intermediary to indirectly indicate storage device charge state. Instead of directly monitoring small voltage changes in the storage device (which are obscured by noise), the system monitors the voltage drop across a known resistance in the power supply path. This voltage drop serves as a mediator that amplifies the detectable signal while maintaining correlation with the storage device's actual charge level, thereby solving the noise interference problem.
2Loss of time
If the difference between upper and lower limit voltages is reduced to detect minute voltage changes, then charging timing can be more precisely determined, but noise from disturbance factors significantly impacts detection stability
Solution Approach 1:
The patent performs preliminary detection of the voltage drop characteristic before using it for charging control decisions. By first measuring the voltage drop across the resistance during load operation and comparing it against predetermined thresholds, the system establishes a reliable baseline that is less susceptible to noise. This preliminary action filters out disturbance factors and ensures that subsequent charging timing decisions are based on stable, pre-validated voltage drop measurements rather than noisy direct voltage readings.
3Ease of operation
If a timer is used to control charging at regular intervals, then charging timing is simplified, but the storage device may be overcharged or require excessively long charging periods
Solution Approach 1:
The patent implements a feedback mechanism where the detected voltage drop is continuously monitored and used to adjust charging control decisions. The voltage drop detection provides real-time feedback about the storage device's charge state, allowing the system to dynamically adjust charging timing rather than following a fixed timer schedule. This feedback loop ensures that charging occurs at the optimal moment when the storage device actually needs it, preventing both overcharging and excessively long charging periods while maintaining operational simplicity.
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 allows for appropriate and stable charging of the storage section, ensuring continuous and efficient power supply to the load by accurately detecting when the storage section needs charging based on voltage drops during load operation, reducing noise interference and maintaining stable operation.
Implementation Method 1
a voltage drop that occurs in the storage section due to a resistance component and a load current in the storage section when a load is being driven
Data Source
AI summary
A charge control device that controls a state of charging to a storage section that stores electric power supplied from a power source and supplies the stored electric power to a load. The charge control device includes a voltage monitoring section which, if the storage section has its inter-terminal voltage being higher than or equal to a predetermined upper limit voltage, determines that the storage section is on a full charge, and which, if the storage section has its inter-terminal voltage being lower than or equal to a predetermined lower limit voltage which is lower than the predetermined upper limit voltage, determines that the storage section needs to be charged.