Secondary Battery Terminal Case for SOH Measurement Switching
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Solution Overview
Problem
Existing secondary batteries face challenges in accurately estimating their degradation and life due to varying environmental conditions, which affects the efficiency of battery packs and requires improved methods for State Of Health (SOH) estimation.
Innovation Solution
A terminal case with a housing and multiple terminals is designed to connect to positive and negative electrode leads, allowing normal and measurement modes for accurate estimation of battery degradation by measuring potential differences and reaction non-uniformity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the terminal stores multiple types of data (raw sensor data, processed data, log data, map data) in the auxiliary storage device, then the state estimation function is enhanced, but the device complexity and storage requirements increase
Solution Approach 1:
The patent segments data storage by creating distinct data storage units for different types of data (raw sensor data, processed data, log data, map data). Each unit is managed independently with specific access patterns, allowing the system to enhance state estimation functionality while maintaining organized, manageable storage structures that don't excessively increase device complexity.
2Measurement precision
If the terminal uses sensor data from the auxiliary storage device to determine battery state, then the measurement precision is improved, but the difficulty of detecting and measuring increases
Solution Approach 1:
The system performs preliminary actions by pre-processing and storing sensor data in the auxiliary storage device during normal operation. Data is organized and prepared in advance with proper formatting and structure, so when battery state determination is needed, the processing burden is significantly reduced. This allows high measurement precision without excessive difficulty during actual battery state detection.
3Measurement precision
If the terminal determines battery state using multiple data types including temperature, voltage, and current sensor data, then the measurement precision is improved, but the device complexity increases
Solution Approach 1:
The auxiliary storage device and data processing system are designed with multi-functionality to handle multiple types of sensor data (temperature, voltage, current) and various data formats. The system can process different data types through unified interfaces and algorithms, enabling improved battery state measurement precision without proportionally increasing device complexity, as the same infrastructure serves multiple measurement functions.
Data Source
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AI summary
The present disclosure relates to a terminal case configured to effectively estimate the life or degradation of a secondary battery as the secondary battery degrades. The terminal case according to the present disclosure includes a housing that can be coupled to the secondary battery, a plurality of normal mode terminals disposed on a first surface of the housing and a plurality of measurement mode terminals disposed on a second surface of the housing.