新能源汽车驱动电机用槽绝缘材料油品兼容性及试验研究

doi:10.7523/j.ucas.2024.022

中国科学院大学学报 ›› 2025, Vol. 42 ›› Issue (3): 322-327.DOI: 10.7523/j.ucas.2024.022

• 材料科学 • 上一篇

新能源汽车驱动电机用槽绝缘材料油品兼容性及试验研究

刘芮^1,2, 张生德^1,2, 王振兴³

1 上海电器科学研究所(集团)有限公司, 上海 200063;
2 上海电机系统节能工程技术研究中心有限公司, 上海 200063;
3 东华大学纤维材料改性国家重点实验室, 上海 201620

收稿日期:2024-02-02 修回日期:2024-04-07 发布日期:2024-05-22
通讯作者: 王振兴,E-mail:437132954@qq.com
基金资助:
上海市自然科学基金(22ZR1403200)资助

Oil compatibility and characteristics of insulating paper materials for new energy vehicle drive motors

LIU Rui^1,2, ZHANG Shengde^1,2, WANG Zhenxing³

1 Shanghai Electrical Apparatus Research Institute (Group) Co., Ltd, Shanghai 200063, China;
2 Shanghai Motor System Energy Saving Engineering Technology Research Center Co., Ltd, Shanghai 200063, China;
3 State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, Donghua University, Shanghai 201620, China

Received:2024-02-02 Revised:2024-04-07 Published:2024-05-22

摘要/Abstract

摘要： 根据T/CEEIA 415标准，以驱动电机槽绝缘材料为研究对象，选取3种0.25 mm厚度的间位芳纶类绝缘纸进行油品兼容性试验，并基于绝缘纸表面物理、化学性质及电气和机械性能在不同周期的变化，对材料的损伤程度和劣化因素进行详细阐述。结果表明，在油品兼容性试验中，短期内受多孔结构和表面毛细作用，增强了纸基结构的致密性，有利于电气性能；但随试验时间增加，自动变速箱润滑油中的水分在油纸绝缘系统中扩散加剧，引发绝缘缺陷形成，造成机械强度衰减，因此通过力学性能变化筛选绝缘材料更直观、准确；此外，由于氢键稳定构型受到了破坏，酰胺键和C＝O键强度改变，密度较低的间位芳纶绝缘纸的介电性能明显恶化。

关键词: 槽绝缘, 间位芳纶纸, 新能源汽车驱动电机, 油品兼容性

Abstract: According to the T/CEEIA 415 standard, taking the drive motor slot insulating material as the research object, three kinds of interstitial aramid insulating papers with 0.25 mm thickness are selected for the oil compatibility test, and based on the changes of the physical, chemical, electrical, and mechanical properties of the insulating paper surfaces in different cycles, the degree of damage and the degradation factors of the materials are elaborated in detail. The results indicate that in the oil compatibility test, the porous structure and surface capillarity enhance the densification of the paper-based structure in the short term, which is beneficial to the electrical performance. However, with the increase of the test time, the diffusion of moisture in the automatic transmission fluid in the oil-paper insulating system is intensified, which triggers the formation of insulating defects and results in the attenuation of the mechanical strength. When screening insulation materials, changes in mechanical properties are more intuitive and accurate. In addition, due to the destruction of the hydrogen bond stabilizing configuration, the amide bond and the C＝O bond strength are changed, and the dielectric properties of the lower density paper deteriorate significantly.

Key words: slot insulation, aramid paper, new energy vehicle drive motors, oil compatibility

中图分类号:

TM215.3

刘芮, 张生德, 王振兴. 新能源汽车驱动电机用槽绝缘材料油品兼容性及试验研究[J]. 中国科学院大学学报, 2025, 42(3): 322-327.

LIU Rui, ZHANG Shengde, WANG Zhenxing. Oil compatibility and characteristics of insulating paper materials for new energy vehicle drive motors[J]. Journal of University of Chinese Academy of Sciences, 2025, 42(3): 322-327.

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新能源汽车驱动电机用槽绝缘材料油品兼容性及试验研究

Oil compatibility and characteristics of insulating paper materials for new energy vehicle drive motors

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