Auxiliary Power Device Cell Balancing for Capacitor Degradation
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Solution Overview
Problem
Existing auxiliary power devices fail to prevent degradation and extend the life of charging cells connected in series, leading to reduced data reliability in memory systems.
Innovation Solution
A power storage apparatus comprising a first and second capacitor connected in series, with a controller applying a balance voltage to adjust the charging voltage between them, diagnosing and managing the degradation state of each capacitor to prevent further degradation and ensure optimal operation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Power
If capacitors are connected in series to increase voltage capacity, then the auxiliary power source can provide higher voltage, but voltage imbalance occurs between capacitors leading to degradation
Solution Approach 1:
The controller continuously monitors the voltage across each capacitor in the series connection and dynamically adjusts the charging current distribution based on real-time voltage measurements. This feedback mechanism ensures that capacitors with lower voltage receive more charging current, while capacitors with higher voltage receive less, thereby maintaining voltage balance and preventing degradation.
Solution Approach 2:
The system changes the charging parameters (current magnitude and duration) applied to each capacitor based on its individual voltage state. By dynamically adjusting these parameters, the controller optimizes the charging process to maintain voltage balance across series-connected capacitors, preventing overcharging of some capacitors while others remain undercharged.
2Ease of manufacture
If uniform charging voltage is applied to series-connected capacitors, then charging is simple, but voltage imbalance causes degradation of individual capacitors
Solution Approach 1:
The controller implements a feedback-based charging strategy that monitors individual capacitor voltages and automatically adjusts charging current allocation. This replaces simple uniform charging with an intelligent adaptive approach that maintains capacitor health while remaining computationally simple to implement.
Solution Approach 2:
Each capacitor effectively charges itself at the appropriate rate based on its own voltage state. The controller enables capacitors with lower voltage to accept more current while limiting current to capacitors with higher voltage, allowing the system to self-regulate and maintain balance without complex external intervention.
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
The solution effectively prevents degradation of charging cells, extends their lifespan, and improves data reliability by dynamically balancing the voltage between capacitors, thereby enhancing the performance and longevity of auxiliary power devices in memory systems.
Implementation Method 1
A power storage apparatus comprising a first capacitor and a second capacitor which are connected in series, and a controller to apply a balance voltage to adjust a charging voltage between the first capacitor and the second capacitor
Data Source
AI summary
An auxiliary power device includes an auxiliary power source having first and second charging cells connected in series, a cell balance circuit configured to sense a charging voltage between the first and second charging cells, generate a balance voltage based on the sensed charging voltage, and applies the generated balance voltage between the first and second charging cells, and a microprocessor configured to diagnose the first and second charging cells based on the sensed charging cells and control the cell balance circuit.