Scholarlink

Li-ion batteriesBatteries are widely used in electric vehicles and portable electronics because of their long cycle life, high energy densityDensity, and lack of memory effect. However, non-uniform and elevated temperaturesTemperature during charge and discharge cycles limit the batteryBatteries performance. To address temperatureTemperature distribution issues, his study presents an electro-thermal finite element model of an 18,650 cylindrical lithium-ion batteryBatteries encased in polyether ether ketone (PEEKPolyether Ether Ketone (PEEK)), using COMSOL MultiphysicsCOMSOL multiphysics. The model makes use of a two-dimensional lumped thermal-electrochemical model to predict transient temperatureTemperature and voltage distributions under varying discharge rates. The model also takes into account the generation of heat as a result of irreversible entropy and Joule effects and simulates natural convective cooling. Under the operating conditions, the model monitors the state of charge, voltage losses, surface temperature, cell potential load, and core temperature. The pack performed well during discharge and charge operations, according to the results. The study discovered that the maximum batteryBatteries temperatureTemperature and difference are highly influenced by the discharge rate, ambient temperatureTemperature, and heat transfer coefficient. The model predicts the maximum temperatureTemperature difference of approximately 14.70 K at 2000 S. The study provides insight into the design of thermal management systems for cylindrical Li-ion cells and future cooling strategies.

错误：搜索内容不能为空，请输入英文关键词
错误：关键词超出字数限制，请精简
高级检索

Electro-Thermal Modeling of Heat Distribution in PEEK-Encased Cylindrical Li-Ion Batteries Under Varying Discharge Rates

  • 会议论文

  • 发表日期：

    2026年

查看全文
  • Kagiso Mampa,
  • Patricia Popoola,
  • Raji Sadiq,
  • Abidemi Adeyoye,
  • Modupeola Dada

摘要

Li-ion batteriesBatteries are widely used in electric vehicles and portable electronics because of their long cycle life, high energy densityDensity, and lack of memory effect. However, non-uniform and elevated temperaturesTemperature during charge and discharge cycles limit the batteryBatteries performance. To address temperatureTemperature distribution issues, his study presents an electro-thermal finite element model of an 18,650 cylindrical lithium-ion batteryBatteries encased in polyether ether ketone (PEEKPolyether Ether Ketone (PEEK)), using COMSOL MultiphysicsCOMSOL multiphysics. The model makes use of a two-dimensional lumped thermal-electrochemical model to predict transient temperatureTemperature and voltage distributions under varying discharge rates. The model also takes into account the generation of heat as a result of irreversible entropy and Joule effects and simulates natural convective cooling. Under the operating conditions, the model monitors the state of charge, voltage losses, surface temperature, cell potential load, and core temperature. The pack performed well during discharge and charge operations, according to the results. The study discovered that the maximum batteryBatteries temperatureTemperature and difference are highly influenced by the discharge rate, ambient temperatureTemperature, and heat transfer coefficient. The model predicts the maximum temperatureTemperature difference of approximately 14.70 K at 2000 S. The study provides insight into the design of thermal management systems for cylindrical Li-ion cells and future cooling strategies.