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power conversion device

A technology for power conversion devices and power modules, applied in electromechanical devices, cooling/ventilation devices, circuits, etc., can solve the problems of reduced assembly workability and complicated power module configuration operations, and achieve improved cooling performance and improved assembly workability Effect

Active Publication Date: 2019-04-02
MITSUBISHI ELECTRIC CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there is a problem that the work of arranging the radially inward side wall surface of the power module with respect to the heat sink is complicated, and the assembly workability is reduced.

Method used

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Experimental program
Comparison scheme
Effect test

Embodiment approach 1

[0040] figure 1 is a partially cutaway perspective view showing the power conversion device according to Embodiment 1 of the present invention, figure 2 is a transverse cross-sectional view showing the power conversion device according to Embodiment 1 of the present invention, image 3 is along figure 2 A cutaway view of the A-O-B arrow, Figure 4 is a perspective view showing an integral sealing member in the power conversion device according to Embodiment 1 of the present invention, Figure 5 is a circuit diagram of the power conversion device according to Embodiment 1 of the present invention, Figure 6 It is a perspective view showing a state in which the internal frame in the power conversion device according to Embodiment 1 of the present invention is linearly developed, Figure 7 is along figure 2 Cutaway view of the main part of the cross-section of the A-O-C arrow. In addition, in figure 1 In , for convenience, the front bracket and control board are omitted...

Embodiment approach 2

[0074] Figure 8 is a transverse cross-sectional view showing a power conversion device according to Embodiment 2 of the present invention, Figure 9 showing along Figure 8 A cutaway view of the A-O-B arrow, Figure 10 A cross-sectional view of main parts showing a state in which an internal frame is linearly developed in a power conversion device according to Embodiment 2 of the present invention.

[0075] exist Figure 8 to Figure 10 Among them, the outer frame 1 and the rear bracket 8 are integrally formed to form a bottomed cylindrical shape.

[0076] In the inner frame 2A, nine base members 20 successively connecting the radial central portions of the circumferential side surfaces of the base members 20 through the thin-walled connecting portions 21 are bent in a ring shape at the thin-walled connecting portions 21 so that The end abutting surfaces 25 of the base member 20 at both ends in the connection direction are abutted to form a cylindrical body having a nine-pri...

Embodiment approach 3

[0090] Figure 11 is a transverse cross-sectional view showing a power conversion device according to Embodiment 3 of the present invention, Figure 12 is showing Figure 11 A sectional view of the main part around the embedded part, Figure 13 is along Figure 11 A cutaway view of the A-O-B arrow, Figure 14 is along Figure 11 A sectional view of the main part of the cross-section of the A-O-C arrow, Figure 15 It is a cross-sectional view of main parts showing a state in which an inner frame is linearly developed in the power conversion device according to Embodiment 3 of the present invention.

[0091] exist Figure 11 to Figure 15 Among them, the power conversion device 102 is arranged at one axial end of the motor unit 200 .

[0092] The motor unit 200 has: a cylindrical motor frame 30 composed of a cylindrical portion 30a and a bottom portion 30b that closes an opening on one end side of the cylindrical portion 30a in the axial direction; and an end plate 31 disp...

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Abstract

The present invention provides a power conversion device capable of improving assembly workability and cooling performance of a power module. In the power conversion device, the frame unit is configured such that the inner frame is embedded in the outer frame, the brackets are arranged at both ends of the frame unit in the axial direction, and the ring-shaped liquid cooling jacket is placed between the inner frame and the outer frame. In the above-mentioned internal frame, a plurality of base members connected in succession are bent at the thin-walled connecting portion between the above-mentioned base members, and the above-mentioned base members located at both ends in the connecting direction are butted to form a cylindrical shape, and the power supply The modules are respectively installed on the radially inward side wall surfaces of the inner frame, and the sealing members for sealing the liquid cooling jacket are arranged respectively at the butt joints of the base members at both ends in the connecting direction, and at the butt joints between the frame unit and the bracket. between.

Description

technical field [0001] The invention relates to a power conversion device in which a power module and a control device are accommodated in a frame unit, and in particular relates to a liquid cooling structure of the power module. Background technique [0002] In a conventional driving device, a hollow cylindrical heat sink having a prism-shaped space formed therein is disposed on the shaft end of the motor, and a power module is disposed on a radially inward side wall surface of the heat sink (for example, refer to Patent Literature 1). [0003] In a conventional rectifier, after mounting diodes on one surface of a flat heat sink base material, the heat sink base material is bent into an arc shape to produce a heat sink assembly (for example, refer to Patent Document 2). [0004] prior art literature [0005] patent documents [0006] Patent Document 1: Japanese Patent Laid-Open No. 2011-176999 [0007] Patent Document 2: Japanese Patent Laid-Open No. 2010-288400 Conte...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02M7/48H01L23/473H02K5/20H02K11/33H05K7/20
CPCH02M7/48H01L2924/0002H05K7/20927H02K11/33H02K5/203H01L2924/00H01H9/52H01L23/473H05K5/06H05K7/20263H05K7/20409
Inventor 北尾纯士深山义浩大谷晃裕渡边教弘
Owner MITSUBISHI ELECTRIC CORP