Battery Management Apparatus for Module State Monitoring
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Solution Overview
Problem
Lithium batteries experience performance deviation due to uneven degradation when used repeatedly, leading to inefficiencies in battery module use, as existing battery management systems only focus on replacing the most degraded cell without optimizing the overall efficiency of multiple battery cells.
Innovation Solution
A battery management apparatus and method that includes a communication unit, measuring unit, and control unit to monitor and compare the state information of multiple battery modules, determining the necessity of replacement based on voltage, current, temperature, rest period, State of Charge (SOC), and State of Health (SOH), and output alarm codes for optimal module swapping.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If battery replacement is based only on the most degraded cell, then replacement timing can be determined, but use efficiency of multiple battery cells is not optimized and performance deviation is not minimized
Solution Approach 1:
The patent combines multiple battery modules into a single battery pack system and implements unified management. The control unit integrates state information from multiple modules (voltage, current, temperature, SOC, SOH) and performs coordinated replacement decisions, merging previously independent module operations into a unified system that optimizes overall performance and minimizes deviation between modules.
Solution Approach 2:
The patent introduces multiple parameters beyond simple degradation level, including rest period, SOC (State of Charge), and SOH (State of Health), to comprehensively evaluate battery module states. By changing from a single-parameter replacement criterion to multi-parameter assessment, the system achieves more accurate replacement timing that improves use efficiency while minimizing performance deviation.
2Reliability
If comprehensive monitoring of multiple battery modules is implemented, then performance deviation can be minimized, but system complexity increases
Solution Approach 1:
The control unit is designed as a multi-functional device that simultaneously performs monitoring, data collection, analysis, and replacement decision-making for multiple battery modules. This universal controller integrates various functions into a single component, enabling comprehensive monitoring without proportionally increasing system complexity.
Solution Approach 2:
The battery management system implements self-service through automated state information collection, analysis, and replacement timing determination. The control unit autonomously monitors multiple modules, compares their states, and determines replacement decisions without requiring external intervention, reducing operational complexity while maintaining reliable performance deviation minimization.
Data Source
AI summary
A battery management apparatus according to an embodiment of the present disclosure includes: a communication unit configured to receive first state information including at least one of voltage, current and temperature of a first battery module connected to an external device from the external device; a measuring unit configured to measure at least one of voltage, current and temperature of a second battery module connected thereto; and a control unit configured to receive the first state information from the communication unit, receive second state information including at least one of voltage, current and temperature of the second battery module from the measuring unit, determine whether it is necessary to replace at least one of the first battery module and the second battery module based on the first state information and the second state information, and output an alarm code corresponding to the determination result.