研究目的
Investigating the effect of a bad connection in the positive tab on the surface temperature distribution and profiles of a 13Ah pouch type lithium-ion battery.
研究成果
The study demonstrated that a bad connection in the positive tab increases the non-uniformity of surface temperature and the risk of thermal runaway in lithium-ion batteries. It highlighted the importance of good connectors for battery safety and performance.
研究不足
The study was limited by safety concerns at higher C rates and the physical constraints of the experimental setup, including a 30 A limit for each cable connected to the Maccor automated test system.
1：Experimental Design and Method Selection:
The study employed infrared thermography and contact thermocouples for thermal analysis of a commercial lithium-ion battery cell under different load profiles.
2：Sample Selection and Data Sources:
A 13Ah pouch type lithium-ion battery cell with Lithium Titanate Oxide (LTO) chemistry was used.
3：List of Experimental Equipment and Materials:
Maccor automated test system, FLIR thermal camera, 16-type K thermocouples connected to NI9213, and a black box to avoid reflection.
4：Experimental Procedures and Operational Workflow:
Different loading patterns were applied to the battery, including constant current charge and discharge cycles at 13A, 26A, 39A, and 52A.
5：2A. Data Analysis Methods:
5. Data Analysis Methods: Thermal images and temperature data were analyzed to determine the evolution of surface temperature distribution and profiles.
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