Terminal Device Detecting Lithium Separation via Voltage Comparison
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Lithium separation phenomena in batteries can significantly impact their service life and safety, and existing methods lack effective detection and real-time monitoring solutions.
Innovation Solution
A method and system for detecting lithium separation in batteries by measuring voltage changes over a preset period, using a terminal device with a processor and storage medium to collect and compare initial and secondary voltages, determining the occurrence of lithium separation, and triggering protective mechanisms when necessary.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If traditional battery monitoring methods are used, then the device structure remains simple, but the ability to detect lithium separation phenomenon is insufficient
Solution Approach 1:
The battery pack uses its own voltage detection system to monitor lithium separation phenomenon, leveraging existing components (voltage detection circuit, controller) to perform dual functions: normal voltage monitoring and lithium separation detection, eliminating the need for separate dedicated detection hardware
Solution Approach 2:
The method detects lithium separation by monitoring changes in voltage parameters over time. Specifically, it compares the voltage change rate during charging with the voltage change rate after standing for a preset time, using these parameter variations to identify lithium separation without additional sensors
2Reliability
If real-time detection of lithium separation is implemented, then battery safety is improved, but the detection process becomes more complex
Solution Approach 1:
The system performs preliminary voltage detection during the charging process to establish a baseline voltage change rate. This preliminary data is then used for comparison in subsequent detection phases, enabling real-time safety monitoring through a systematic multi-stage approach
Solution Approach 2:
The controller continuously monitors voltage changes and compares them against expected ranges. When abnormal voltage change rates are detected (indicating lithium separation), the system provides feedback to adjust charging parameters or alert the user, creating a closed-loop safety mechanism
3Loss of time
If voltage detection is performed continuously, then detection timeliness is improved, but energy consumption increases
Solution Approach 1:
The system performs voltage detection at specific periodic intervals: during charging and after the battery stands for a preset time. This periodic detection approach ensures timely identification of lithium separation while minimizing unnecessary continuous monitoring that would waste energy
Data Source
AI summary
A method for detecting a lithium separation phenomenon of a battery of a terminal device is provided. The method includes detecting a working state of the battery, and collecting a first voltage of the battery when the working state of the battery is the resting state. The method further include collecting a second voltage of the battery when the battery is left to stand for a preset period of time, and determining whether the lithium separation phenomenon has occurred according to the first voltage and the second voltage. The implementation of the application can detect whether the lithium separation phenomenon has occurred in the battery and trigger a protection circuit of the battery in time when the lithium separation phenomenon has occurred in the battery.