Sensory Battery Cell Monitoring for Degraded Cell Isolation
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Solution Overview
Problem
Conventional power batteries lack the ability to precisely sense the performance parameters and degraded state of each battery cell, leading to inconsistent quality and reduced service life, posing safety risks and increasing maintenance costs due to unaddressed overcharge, overdischarge, and quick charge issues.
Innovation Solution
Implementing sensory chips to precisely measure performance parameters such as voltage, current, and temperature of each battery cell, allowing for dynamic adjustment of the battery network and isolation of degraded cells to prevent overcharge and overdischarge, thereby maintaining battery cell consistency and extending service life.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If conventional power batteries are used without sensory chips, then the battery network structure is simple and device complexity is low, but measurement precision of performance parameters and reliability of battery management are insufficient
Solution Approach 1:
The patent divides the battery system into modular sensory battery cells, each equipped with its own sensory chip for independent monitoring. This segmentation allows precise measurement of performance parameters at the cell level while maintaining manageable system complexity through standardized modules.
Solution Approach 2:
Sensory chips are introduced as intermediary devices between the battery cells and the battery management system. These chips precisely measure performance parameters (voltage, current, temperature) and transmit data to the BMS, enabling accurate monitoring without requiring direct complex connections between all battery components.
2Reliability
If battery cells are monitored individually with sensory chips, then reliability of preventing overcharge and overdischarge is improved, but device complexity and manufacturing cost increase
Solution Approach 1:
The sensory chips continuously monitor performance parameters and predict potential degradation before critical failure occurs. The system takes preliminary actions by identifying degraded cells early and adjusting the battery network configuration to prevent overcharge and overdischarge, rather than reacting after damage occurs.
Solution Approach 2:
The patent implements dynamic adjustment of the battery network configuration based on real-time cell status. The system can reconfigure series-parallel connections adaptively, isolating degraded cells and redistributing load to healthy cells, thereby maintaining safety and performance while managing complexity through software-controlled flexibility.
3Duration of action of stationary object
If degraded battery cells are isolated dynamically, then service life of the power battery is extended, but the complexity of battery network adjustment increases
Solution Approach 1:
The battery management system dynamically reconfigures the battery network by adjusting series-parallel connections based on real-time cell health assessment. This dynamic adaptation extends service life by continuously optimizing the operational configuration, while the complexity is managed through automated control algorithms that handle reconfiguration without manual intervention.
Solution Approach 2:
The system extends battery service life by changing operational parameters such as voltage thresholds, current limits, and temperature ranges based on cell degradation states. These parameter adjustments allow the battery to operate safely in degraded conditions, extending usable life while the underlying network structure remains manageable through software control.
4Manufacturing precision
If performance parameters of each battery cell are precisely measured, then manufacturing precision and quality consistency are improved, but measurement system complexity and cost increase
Solution Approach 1:
The measurement system is segmented into distributed sensory chips at each battery cell level, each performing simple local measurements. This segmentation achieves comprehensive quality monitoring while keeping individual measurement units simple and manageable, avoiding the complexity of a centralized high-precision measurement system.
Solution Approach 2:
Each sensory battery cell performs self-diagnosis and self-monitoring through its integrated sensory chip. The cells automatically measure their own performance parameters and report status to the management system, eliminating the need for complex external measurement equipment and reducing overall system complexity while maintaining high measurement precision.
Data Source
AI summary
The present invention discloses a sensory battery cell including a plurality of battery cells arranged in a first battery network, wherein the first battery network is a series network or a parallel network or a combination thereof, and a sensing integrated circuit connected in parallel with each battery cell to sense performance parameters of the plurality of battery cells, wherein the sensing integrated circuit includes a function circuit able to take an action for the battery cell that reaches a set condition. The present invention further discloses a intelligent battery using the sensory battery cell, a power battery using the intelligent battery, a battery management system and related methods thereof.