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Analysis of the Temperature Change of a Single Battery Based on Simulink

机译：基于Simulink的单电池温度变化分析

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A single battery is the smallest unit of the power source of an electric vehicle. Research on the heat production of a single battery can inform the more precise control the temperature distribution of the entire battery pack. This article selects a certain 18650 lithium-ion battery as the research object. We analyze the working principle, heat production and heat transfer of the battery. Then, we define the basic parameters and establish a heat production model of the single battery. The change in internal resistance of the lithium-ion battery is caused by the state of charge and external temperature. Through its transformation relationship, the impact on the battery temperature is studied. A thermal model of a concentrated mass battery with natural heat dissipation is generated through Simulink to simulate the same temperature at different battery discharge rates and the same battery discharge rate at different temperatures. This method provides a new concept for battery simulation. The temperature increase accelerates at the end of the constant current discharge. When the external temperature increases, the maximum temperature increase of the lithium-ion battery gradually decreases.
机译：单个电池是电动车辆电源的最小单位。对单电池的热量生产的研究可以介绍整个电池组的温度分布更精确。本文选择了一定的18650个锂离子电池作为研究对象。我们分析了电池的工作原理，热量生产和传热。然后，我们定义基本参数并建立单电池的热量生产模型。锂离子电池的内阻的变化由充电状态和外部温度引起。通过其转化关系，研究了对电池温度的影响。通过Simulink产生具有自然散热的浓缩物质电池的热模型，以模拟不同电池放电速率的相同温度和不同温度的电池放电速率。该方法为电池仿真提供了一种新的概念。温度增加在恒流放电结束时加速。当外部温度升高时，锂离子电池的最高温度升高逐渐减小。

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