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A power module for electric vehicles

A technology for power modules and electric vehicles, applied in circuits, electrical components, electric solid devices, etc., can solve the problems of large internal thermal resistance, difficult to meet the needs of heat dissipation, low efficiency, etc., to achieve reliable performance and avoid long-term reliability. Ineffective effect

Active Publication Date: 2019-06-28
ZHUZHOU CRRC TIMES SEMICON CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The heat dissipation efficiency of this structure is relatively low, and the internal thermal resistance is also large.
For inverters for electric vehicles with very strict heat dissipation requirements, this heat dissipation method is already difficult to meet the needs

Method used

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  • A power module for electric vehicles
  • A power module for electric vehicles
  • A power module for electric vehicles

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Embodiment Construction

[0038] The implementation of the present invention will be described in detail below in conjunction with the accompanying drawings and examples, so as to fully understand and implement the process of how to apply technical means to solve technical problems and achieve technical effects in the present invention. It should be noted that, as long as there is no conflict, each embodiment and each feature in each embodiment of the present invention can be combined with each other, and the formed technical solutions are all within the protection scope of the present invention.

[0039] Also, in the following description, for purposes of explanation, numerous specific details are set forth in order to provide a thorough understanding of embodiments of the invention. It will be apparent, however, to one skilled in the art that the present invention may be practiced without the specific details or in the particular manner described.

[0040] figure 2 A schematic structural diagram of...

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Abstract

The invention discloses a power module for an electric vehicle. The power module comprises: a semiconductor chip; a first heat conducting plate and a welding layer, and the first heat conducting plate is connected to a corresponding port on the first surface of the semiconductor chip through the welding layer; The second heat conduction plate and the metal solder ball array, the second heat conduction plate is connected to the corresponding port on the second surface of the semiconductor chip through the metal solder ball array; the power terminal and the control terminal, the power terminal and the control terminal are connected to the first heat conduction plate; And, encapsulating the casing. The power module adopts the form of solder ball interconnection and double-sided heat dissipation, which can solve the problems of parasitic inductance and heat dissipation efficiency inside the power module, thus ensuring the reliable performance of the module.

Description

technical field [0001] The invention relates to the technical field of power electronics, in particular to a power module for electric vehicles. Background technique [0002] The exploration of energy saving and environmental protection has become the theme of today's industrial development. Electric vehicles have been booming in recent years, and power electronic devices have become a hot spot in the field of electric vehicles. Insulated-gate bipolar transistor (IGBT) modules combine the advantages of bipolar transistors (BJT) and MOSFETs, showing excellent performance, and thus are widely used in motor drive and control systems in electric vehicles. [0003] As people's performance requirements for automotive motor inverters are getting higher and higher, higher requirements are also put forward for power electronic modules in terms of operating temperature and efficient heat dissipation. The changing ambient temperature is the cause of the passive thermal cycle in the ve...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01L23/31H01L23/36
CPCH01L2924/13055H01L2924/13091H01L2224/32225H01L2224/48091H01L2224/48139H01L2224/48227H01L2224/73265H01L2924/181H01L2924/00014H01L2924/00H01L2924/00012
Inventor 马雅青吴义伯王彦刚李云余军戴小平刘国友
Owner ZHUZHOU CRRC TIMES SEMICON CO LTD