对于应用于全海深环境的锂离子电池，针对在实际使用过程中电池的电压、电流、电芯温度、SOC（荷电状态）等数据，分析其放电特性。通过提取电池组的电池电流和海水温度，针对电芯温度随电池电流和海水温度的变化特点进行分析，同时分析不同支路的电芯温度特点，并结合不同工况的电池电流特点和海水温度，分析电芯温度在不同阶段的变化情况。此外，分析电池电流对SOC的影响，并对比分析不同情况下SOC随电池电流变化的特点。
In this paper, the discharge characteristics of the lithium-ion battery are analyzed according to the data of the battery’s voltage, current, core temperature and SOC under full deep sea environment. By extracting the battery current and water temperature data, the core temperature characteristics along with the change of battery current and water temperature is analyzed, at the same time the different branch of the cell temperature change characteristics are analyzed, and combining with the characteristics of different latent time of battery current and water temperature, cell temperature changes in different stages. In addition, the influence of battery current on SOC is analyzed, and the characteristics of SOC changing with battery current under different dives are compared and analyzed.
2024,46(14): 110-113 收稿日期：2023-08-01
DOI：10.3404/j.issn.1672-7649.2024.14.018
分类号：P756
基金项目：国家重点研发计划资助项目（2016YFC0300600）
作者简介：宋德勇(1990-),男,博士,高级工程师,研究方向为深海载人潜水器
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