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IGBT module for electric automobile

A technology for electric vehicles and electrode terminals, applied in circuits, electrical components, electrical solid devices, etc., can solve problems such as long heat dissipation paths and thermal fatigue of internal materials, so as to improve product operation reliability, reduce heat conduction paths, and improve heat conduction efficiency effect

Pending Publication Date: 2020-11-03
XIAN UNIV OF TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The purpose of the present invention is to provide an IGBT module for electric vehicles, which solves the product reliability problems caused by the long internal heat dissipation path of the product and the thermal fatigue between internal materials in the prior art

Method used

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  • IGBT module for electric automobile

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Embodiment Construction

[0023] The present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0024] An IGBT module for electric vehicles, such as figure 1 , including a radiator 2, a substrate 4 is fixed on the top layer of the radiator 2, a housing 1 is fixed on the top of the substrate 4, a groove is opened on the top of the substrate 4 in the housing 1, a DBC7 is arranged in the groove, and the top of the DBC7 is placed There is a chip 12, the chip 12 is welded to the DBC7 through the solder layer 11, the top copper layer surface of the DBC7 is electrically connected to the chip 12 through the bonding wire 13, the top copper layer surface of the DBC7 is also connected to the electrode terminal 6, and the electrode terminal 6 is embedded in the shell 1 Inside, one end of the electrode terminal 6 protrudes from the inner wall of the shell 1, and is electrically connected to the DBC7 by means of ultrasonic welding, and the other end ...

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Abstract

The invention discloses an IGBT module for an electric automobile, and the IGBT module comprises a radiator; a substrate is fixed at one layer of the top of the radiator, a housing is fixed at the topof the substrate, a groove is disposed at the top of the substrate in the housing, a DBC is disposed in the groove, a chip is disposed at the top of the DBC and welded with the DBC through a weldinglayer, and the top surface of the DBC is electrically connected with the chip through a bonding wire. The surface of the top copper layer of the DBC is further connected with an electrode terminal, the electrode terminal is embedded in the shell, one end of the electrode terminal extends out of the inner wall of the shell and is electrically connected with the DBC in an ultrasonic welding mode, the other end of the electrode terminal extends out of the top of the shell, and a gap in the shell is encapsulated with silica gel. According to the invention, the problem of product reliability causedby overlong internal heat dissipation path of the product and thermal fatigue between internal materials in the prior art is solved.

Description

technical field [0001] The invention belongs to the technical field of electric vehicle parts, and relates to an IGBT module for an electric vehicle. Background technique [0002] In 2010, my country incorporated the electric vehicle (also known as new energy vehicle) industry into a strategic new industry, "rectified" the name of new energy vehicles in the form of a national strategy, and gave strong policy support, which made my country's new energy vehicles Automobile has made outstanding achievements in a short period of time, and its current sales volume has firmly ranked first in the world. However, IGBT modules are one of the core components of electric vehicles. Domestic IGBTs have not achieved technological leadership, and the market is mainly controlled by foreign companies such as Infineon. Therefore, solving the key core technology of IGBT modules for electric vehicles is beneficial to the country and the people. [0003] Due to the frequent start and stop of ele...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01L23/34H01L23/367H01L23/373H01L23/49H01L23/10H01L25/18
CPCH01L23/10H01L23/34H01L23/3677H01L23/3731H01L23/3736H01L23/49H01L25/18H01L2224/48091H01L2224/73265H01L2924/00014
Inventor 杨媛吴磊
Owner XIAN UNIV OF TECH
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