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Research on Thermal Sleeve Assembly Process and Equipment for New Enerqy Vehicle Motor Stator Core and Shell
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Zenghui Ding1, Hang Zhao1, Lei Dong1, Jiaming Zhao1, Xintai Ding2
Automobile Technology & Material | 2026, (3) : 25 - 33
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Automobile Technology & Material | 2026, (3): 25-33
Research on Thermal Sleeve Assembly Process and Equipment for New Enerqy Vehicle Motor Stator Core and Shell
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Zenghui Ding1, Hang Zhao1, Lei Dong1, Jiaming Zhao1, Xintai Ding2
Affiliations
  • 1.FAW Tooling Die Manufacturing Co., Ltd., Changchun 130013
  • 2.Wuhan University of Technology, Wuhan 430063
Published: 2026-03-20 doi: 10.19710/J.cnki.1003-8817.20250283
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To optimize the thermal shrink fitting process of the stator core and housing in new energy electric drive systems and improve the qualification rate of thermal shrink fitting, a systematic study is conducted on key issues such as heating temperature, assembly accuracy, heating uniformity, and core rebound in the process. The results show that after housing heating, changes in the positioning hole spacing due to "thermal-structural coupling" led to axis offset, and a diamond pin positioning compensation scheme is proposed. By optimizing the heating process and Proportional-Integral-Derivative (PID) control, heating uniformity is improved. The stress-strength interference model is applied to verify the reliability of the assembly gap. In response to core rebound, the dwell time is optimized, and spray cooling is introduced, effectively enhancing cooling efficiency and dimensional stability. Practice has shown that the related measures significantly improve the qualification rate and production efficiency of the assembly process.

Hot sleeve assembly  /  Heating process  /  Cooling rate  /  Stress-strength interference model  /  Thermal-structural coupling
丁增辉, 赵航, 董雷, 赵佳铭, 丁新泰. 新能源汽车电机定子铁芯与壳体热套装配工艺及设备研究. 汽车工艺与材料, 2026 , (3) : 25 -33 . DOI: 10.19710/J.cnki.1003-8817.20250283
Zenghui Ding, Hang Zhao, Lei Dong, Jiaming Zhao, Xintai Ding. Research on Thermal Sleeve Assembly Process and Equipment for New Enerqy Vehicle Motor Stator Core and Shell[J]. Automobile Technology & Material, 2026 , (3) : 25 -33 . DOI: 10.19710/J.cnki.1003-8817.20250283
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Year 2026 volume Issue 3
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doi: 10.19710/J.cnki.1003-8817.20250283
  • Online Date：2026-09-23
  • Published：2026-03-20
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Affiliations
    1.FAW Tooling Die Manufacturing Co., Ltd., Changchun 130013
    2.Wuhan University of Technology, Wuhan 430063
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表12种不同金属材料的力学参数
科
Family		 属数
Number of
genus		 种数
Number of
species		 占总种数比例
Percentage of
total species (%)		 属
Genus		 种数
Number of
species		 占总种数比例
Percentage of total
species (%)
鹅膏菌科Amanitaceae 2 11 5.26 鹅膏菌属 Amanita 10 4.78
小菇科 Mycenaceae 2 12 5.74 丝盖伞属 Inocybe 5 2.39
多孔菌科 Polyporaceae 8 14 6.70 蜡蘑属 Laccaria 5 2.39
红菇科 Russulaceae 3 23 11.00 小皮伞属 Marasmius 6 2.87
小菇属 Mycena 11 5.26
光柄菇属 Pluteus 5 2.39
红菇属 Russula 17 8.13
栓菌属 Trametes 5 2.39
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