Battery Balancing via Resonant Frequency Compensation
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Solution Overview
Problem
State-of-the-art battery balancing systems face performance decline due to changes in resonant frequency of circuit components caused by aging and environmental factors, leading to inefficient energy balancing and reduced battery lifespan.
Innovation Solution
A battery balancing system utilizing a phase-locked loop (PLL) controller that adjusts the drive frequency of battery balancing circuits to match the current resonant frequency, ensuring optimal performance by continuously monitoring and compensating for changes in resonant frequency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If battery balancing circuits are driven at a constant frequency as manufactured, then the system structure is simple, but the performance deteriorates as resonant frequency changes due to aging and environmental factors
Solution Approach 1:
The patent implements a phase-locked loop (PLL) controller that dynamically adjusts the drive frequency of battery balancing circuits to track the resonant frequency over time. The system transitions from a static constant frequency approach to a dynamic frequency tracking approach, where the drive frequency automatically adapts to changes in resonant frequency caused by aging, temperature fluctuations, and electromagnetic damage. This resolves the contradiction by making the system structure more complex through PLL implementation while significantly improving reliability through continuous frequency optimization.
Solution Approach 2:
The patent employs a feedback mechanism where the PLL controller continuously monitors the resonant frequency of the balancing circuits and adjusts the drive frequency accordingly. The system measures the actual resonant frequency, compares it with the drive frequency, and automatically corrects any deviation. This feedback loop ensures that the balancing circuits operate at optimal frequency despite component aging and environmental changes, resolving the contradiction between simple structure and reliable performance.
2Reliability
If the drive frequency is adjusted to match changing resonant frequency, then the balancing performance is maintained, but the device complexity increases due to PLL implementation
Solution Approach 1:
The patent integrates the PLL controller to perform multiple functions: frequency tracking, phase detection, and automatic frequency adjustment. This multi-functional approach consolidates what could have been separate complex subsystems into a single integrated controller, thereby improving reliability through coordinated control while limiting the increase in overall device complexity through functional integration.
3Productivity
If battery cells are monitored and balanced continuously, then the energy distribution is optimized, but the response time of analog components deteriorates over time due to aging and environmental factors
Solution Approach 1:
The patent addresses the deterioration of response time by dynamically changing the operating frequency parameter of the balancing circuits. As analog components age and their response characteristics change, the PLL controller adjusts the drive frequency to compensate for these parameter drifts. This maintains optimal energy balancing efficiency (productivity) despite the natural aging of components, effectively resolving the contradiction between continuous monitoring benefits and deteriorating response time.
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 system maintains optimal battery balancing performance by dynamically adjusting the drive frequency, thereby extending the lifespan and efficiency of battery cells despite environmental influences.
Implementation Method 1
the resonant frequency of charge balancing circuits in order to maintain optimal system performance
Data Source
AI summary
A system for balancing charge between a plurality of storage battery cells within a storage battery. The battery balancing system sense changes, possibly caused by environmental influences, in the overall resonant frequency of charge balancing circuits contained within the battery balancing system. Using a phase locked loop based controller, the battery balancing system compensates for the change in resonant frequency by driving the battery balancing circuits at a frequency that matches the actual sensed resonant frequency of the battery balancing circuits.