Analysis for impact resistance of the high-voltage power module with different fixed modes

QIN Feng; LI Juntao; LI Jinzhu; YANG Yingkun; GAO Lei

doi:10.11883/bzycj-2021-0269

Volume 42 Issue 5

May 2022

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Article Navigation > Explosion And Shock Waves > 2022 > 42(5): 053204

XIE Yushan, LU Jianhua, XU Songlin, SHU Zaiqin, ZHANG Jinyong. On impact properties of Mo-ZrC gradient metal ceramics[J]. Explosion And Shock Waves, 2023, 43(3): 033101. doi: 10.11883/bzycj-2022-0374

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QIN Feng, LI Juntao, LI Jinzhu, YANG Yingkun, GAO Lei. Analysis for impact resistance of the high-voltage power module with different fixed modes[J]. Explosion And Shock Waves, 2022, 42(5): 053204. doi: 10.11883/bzycj-2021-0269

XIE Yushan, LU Jianhua, XU Songlin, SHU Zaiqin, ZHANG Jinyong. On impact properties of Mo-ZrC gradient metal ceramics[J]. Explosion And Shock Waves, 2023, 43(3): 033101. doi: 10.11883/bzycj-2022-0374

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Analysis for impact resistance of the high-voltage power module with different fixed modes

doi: 10.11883/bzycj-2021-0269

QIN Feng^{1, 2
,},
LI Juntao^{1, 2
,
,},
LI Jinzhu³,
YANG Yingkun^{1, 2},
GAO Lei^{1, 2}

1.
Institute of Electronic Engineering, China Academy of Engineering Physics, Mianyang 621999, Sichuan, China
2.
Microsystem and Terahertz Research Center, Chengdu 610200, Sichuan, China
3.
School of Mechanical and Electrical Engineering, Beijing Institute of Technology, Beijing 100081, China

Received Date: 2021-06-30
Rev Recd Date: 2022-02-22

Available Online: 2022-04-06

Publish Date: 2022-05-27

Abstract

Abstract

High-voltage power module is a key component to realize stable current output. In order to improve the structural reliability of the high-voltage power module and optimize the fixed modes under high-speed impact, the impact resistance characteristics with different fixed modes are studied. Based on the one-dimensional stress wave theory, the comparison of deformation energy and kinetic energy of the module with different fixed modes are obtained by analyzing the dynamic response and energy conversion form of the module on the free Hopkinson pulse bar (FHPB). The finite element method is used to simulate the processes of motion and deformation under impact velocity of 20 m/s. The stress distributions, the deflection curves, the velocity curves, and the acceleration curves of the module under the same impact are obtained. It is found that the maximum stress (427 MPa) appears at the ceramic layer, while the maximum deflection (773.8 μm) occurs at the metal substrate layer. The magnitude of the maximum displacement speed is up to 17.68 m/s, and the magnitude of the maximum acceleration is up to 51 110.7g. By comparing the impact response results of the four fixed modes, the deformation of bottom substrate from small to large is the surface mounting, four-corner point fixing, two-point fixing on the short side and two-point fixing on the long side. The highest kinetic energy and acceleration are produced on the surface mounting modules. The results indicate that a minimum failure probability exists on surface mounting module under high impact loading. In summary, surface mounting is the most reliable fixed method among the four fixed methods. Then, the selection priorities are as following: the four-corner fixing, two-point fixing on the short side and two-point fixing on the long side. Out study results would provide an important theoretical basis of the mounting and fixing methods for semiconductor high-voltage power modules in practical application.
- high-voltage power module,
- fixed mode,
- high-speed impact,
- finite element method

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References(12)

References

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