Secondary Battery Control Device for Electrolyte Permeation Management
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Solution Overview
Problem
The permeation of electrolytic solution from secondary battery cells leads to reduced electrolyte levels, decreased charge-discharge efficiency, and cooling efficiency, causing battery performance deterioration and potential defects.
Innovation Solution
A control device for secondary batteries, comprising a calculating, determination, and controlling portion, calculates the electrolytic solution passing amount based on temperature history, determines gas content and residual amounts, and adjusts input-output and cooling workloads to maintain battery performance and prevent deterioration.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Duration of action of moving object
If the secondary battery operates for an extended period or at high temperatures, then the battery provides continuous power output, but the electrolytic solution permeates through the seal material causing deterioration of the seal material and reduction in battery performance
Solution Approach 1:
The control device calculates the electrolytic solution passing amount through the seal material before significant deterioration occurs by integrating temperature history data. This preliminary assessment allows the system to predict seal material degradation and battery performance reduction, enabling preventive maintenance or operational adjustments before reliability is compromised
Solution Approach 2:
The control device continuously monitors temperature history and calculates the electrolytic solution passing amount in real-time, providing feedback on the current state of the seal material and battery performance. This feedback mechanism allows for dynamic adjustment of operational parameters to prevent further deterioration while maximizing battery utilization
2Duration of action of moving object
If the electrolytic solution permeates through the seal material, then the battery can operate longer, but the gas content in the container increases causing safety issues and performance degradation
Solution Approach 1:
The control device calculates the electrolytic solution passing amount and estimates gas content in the container before dangerous accumulation occurs. By using the relationship between electrolytic solution passing amount and gas generation, the system can predict gas accumulation trends and trigger alerts or operational changes before safety thresholds are reached
Solution Approach 2:
The control device provides continuous feedback on the calculated electrolytic solution passing amount, which correlates with gas content in the container. This feedback enables real-time monitoring of gas accumulation risks, allowing the system to adjust operations or issue warnings before harmful gas levels are reached
3Duration of action of moving object
If the electrolytic solution permeates from the cell, then the battery continues to function, but the charge-discharge efficiency and cooling efficiency decrease
Solution Approach 1:
The control device calculates the electrolytic solution passing amount before charge-discharge efficiency significantly deteriorates. By monitoring the cumulative temperature history and calculating the passing amount, the system can predict efficiency degradation and adjust operational parameters or schedule maintenance before productivity is compromised
Solution Approach 2:
The control device continuously calculates the electrolytic solution passing amount based on temperature history, providing feedback on the current efficiency state of the battery. This feedback allows for dynamic optimization of charge-discharge operations and cooling strategies to maintain maximum productivity throughout the battery's operational life
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 control device effectively manages electrolyte levels and cooling efficiency, extending battery life and preventing defects by accurately determining gas content and adjusting operational parameters in real-time.
Implementation Method 1
a calculating portion configured to calculate an electrolytic solution passing amount based on a temperature history of the secondary battery
Data Source
AI summary
A control device includes: a calculating portion configured to calculate an electrolytic solution passing amount based on a temperature history of a secondary battery; a determination portion configured to make the determination on a predetermined gas content based on one or more first thresholds and a ratio of the electrolytic solution passing amount to a free volume of a container in which the secondary battery is accommodated; and a controlling portion configured to form predetermined notification information when an affirmative determination is made on the predetermined gas content.