Capacitor Module Charge Discharge Control via Switched Branches
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Solution Overview
Problem
The fluctuation in current used to charge/discharge capacitors in electronic devices affects the operation due to performance drift, leading to varying charge/discharge times, which can impact the stability and efficiency of electronic equipment.
Innovation Solution
A method and apparatus that measure the initial charge/discharge time of a capacitor module and adjust the subsequent charge/discharge time by controlling switches, ensuring the capacitor module is charged/discharged within a controlled range by switching on/off based on predefined time thresholds, thereby stabilizing the total charge/discharge process.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If capacitors are charged/discharged with current signal to store/release electric energies, then the electronic device can perform current signal detection and energy storage functions, but the charge/discharge time fluctuates within a wide range due to current magnitude variations, affecting device operation stability
Solution Approach 1:
The patent applies dynamics by making the capacitor module's effective capacitance adjustable through switch control. The system dynamically changes the capacitance value based on detected charge/discharge time, transforming a static capacitor configuration into a dynamic one that adapts to varying current conditions, thereby stabilizing the charge/discharge time despite current fluctuations
Solution Approach 2:
The patent implements feedback by measuring the actual charge/discharge time of the capacitor module and using this measurement to control the switching state of the capacitor module. The controller adjusts the capacitance based on the measured time, creating a closed-loop feedback system that automatically compensates for current variations and maintains stable operation
2Duration of action of moving object
If the capacitance value of the capacitor module is adjusted by controlling switches, then the charge/discharge time can be stabilized within a limited range, but the device complexity increases due to additional control circuits
Solution Approach 1:
The patent applies universality by designing the controller to perform multiple functions: it detects the charge/discharge time, determines the appropriate capacitance value, controls the switch states, and manages the overall charging/discharging process. This multi-functional approach consolidates what could be separate complex circuits into a single integrated controller, reducing overall device complexity while achieving charge/discharge time stabilization
Data Source
AI summary
A method is disclosed for controlling charging/discharging of a capacitor module. The capacitor module includes a plurality of branches connected in parallel, each of which includes a capacitor and a switch connected in series with the capacitor. The method includes measuring a first charge/discharge time for the capacitor module being charged/discharged from an initial voltage to an intermediate voltage, and To adjusting a second charge/discharge time for the capacitor module being further charged/discharged from the intermediate voltage to a target voltage by controlling on/off of at least one of the switches depending on the first charge/discharge time, the intermediate voltage being between the initial voltage and the target voltage. Also disclosed are an apparatus for controlling charging/discharging of a capacitor module and a display apparatus including the apparatus.