MEMS EISA Chip for Battery Impedance Monitoring
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Batteries degrade over charging and discharging cycles due to oxidized particles adhering to the anode and cathode, reducing surface area and increasing internal resistance, leading to reduced power storage capacity, voltage output, and increased self-discharge rates, which can be exacerbated by inefficient sensor triggering.
Innovation Solution
An electrochemical impedance spectroscopy (EIS) analyzer chip for microelectromechanical systems (MEMS) performs EIS tests on batteries, gathering sensor data to determine the battery's state and usage patterns, allowing for adjustments to battery and sensor settings to improve efficiency and longevity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Power
If batteries undergo charging and discharging cycles, then power storage capacity and voltage output are improved, but internal resistance increases and battery life decreases
Solution Approach 1:
The EIS analyzer performs battery health assessments before significant degradation occurs by continuously monitoring impedance changes during charging cycles. This preliminary detection allows for preventive maintenance actions to be taken before the battery reaches critical failure points, thereby extending battery life while maintaining power capacity.
Solution Approach 2:
The system implements real-time feedback monitoring of battery impedance characteristics during charging and discharging cycles. By analyzing the relationship between applied current and resulting voltage responses, the system provides continuous feedback on battery health status, enabling dynamic adjustment of charging parameters to optimize both power delivery and battery longevity.
2Measurement precision
If sensors are triggered to monitor battery status, then battery state information is obtained, but additional current is drawn from the battery
Solution Approach 1:
The system combines multiple monitoring functions into a single EIS measurement process. Instead of using separate sensors for voltage, current, and impedance monitoring that would each draw additional power, the system performs a unified electrochemical impedance spectroscopy measurement that simultaneously provides comprehensive battery state information while minimizing additional current draw through efficient signal processing.
Solution Approach 2:
The patent replaces traditional mechanical/electronic sensing systems with electrochemical measurement methods. By using EIS techniques that leverage the battery's own electrochemical properties to generate measurement signals, the system eliminates the need for numerous external sensors and their associated power consumption, achieving precise battery state monitoring with minimal energy overhead.
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 EIS analyzer chip enables effective monitoring and management of battery health by identifying degradation factors and optimizing battery usage, thereby extending battery life and improving system performance.
Implementation Method 1
electrochemical impedance spectroscopy ('EIS') tests on a battery (742)
Data Source
AI summary
Various embodiments may provide an electrochemical impedance spectroscopy analyzer (EISA) chip for a microelectromechanical system (MEMS). In various embodiments, the EISA chip may perform an electrochemical impedance spectroscopy (EIS) test on a battery and may gather sensor data associated with a battery from sensors on the MEMS.