Power integration module type power unit

Abstract

The utility model relates to a power integrated module type power unit, which comprises a unit main shell, a cable, a control driving board, a radiating fin, an integrated power module, a module adapter board, a bypass relay, a fast fuse, a copper bar, a direct-current bus PCB (printed circuit board), a direct-current capacitor and the like. The rear side of the unit main shell facilitates installation and positioning of the power unit module; a unit inlet wire cable is changed into an upper inlet wire mode, connection is performed from the upper portion of the rear side of a unit main shell, and the length of the cable from the unit to the secondary side of the transformer is reduced; the integrated power module is adopted and fixed on the radiating fin substrate and above the power unit, so that the number of devices is reduced, and the power density is improved; the bypass relay is welded to the module adapter plate, and bypass output is achieved when a fault occurs. The fast fuse is fixed on the module adapter plate, and the module adapter plate is welded on the integrated power module; the direct-current capacitor is fixed on a bottom plate in the main shell and is connected with the integrated power module through the direct-current bus PCB and the copper bar.

Description

Technical Field

[0001] The utility model relates to a power unit of a power integration module type. Background Art

[0002] With the rapid development of modern power electronics technology, the development of power semiconductor technology has been promoted. The power unit module of a traditional high-voltage frequency converter is composed of a rectification module, an IGBT, a filter energy storage capacitor, etc. It requires a large number of power semiconductor devices, has a large radiator size, and the power devices are connected through copper bars, etc. The installation is complex, resulting in a high cost, low power density, and large volume of the power unit module. Summary of the Invention

[0003] In order to solve the above problems, the utility model provides a power unit of a power integration module type, and its technical solution is as follows:

[0004] It includes a unit main housing, a cable, a control and drive board, a heat sink, an integrated power module, a module adapter board, a bypass relay, a fast fuse, a copper bar, a DC bus PCB board, a DC capacitor, a side plate, and a fence-type through-wall terminal. The side plate is installed on the side of the main housing. Inside the main housing, there are a control and drive board, a heat sink, an integrated power module, a module adapter board, a bypass relay, a copper bar, a DC bus PCB board, and a DC capacitor;

[0005] The unit incoming cable enters from the upper rear side of the unit main housing;

[0006] The control and drive board is arranged inside the unit main housing and below the heat sink;

[0007] The integrated power module is fixed on the heat sink substrate and installed above the inside of the unit main housing;

[0008] The module adapter board is fixed to the integrated power module;

[0009] The bypass relay is fixed to the module adapter board;

[0010] The fast fuse is fixed to the module adapter board;

[0011] The DC capacitor is fixed on the bottom plate inside the unit main housing and is connected to the integrated power module through the DC bus PCB board and the copper bar.

[0012] Furthermore, the unit incoming cable is in the upper incoming line mode and is connected from the upper rear side of the unit main housing, reducing the cable length from the unit to the secondary side of the transformer.

[0013] Furthermore, the bypass relay is welded to the module adapter board to meet the bypass output during a fault.

[0014] The beneficial effects of the present utility model are as follows: The present utility model is a power integration module type power unit. The module includes a unit main housing, cables, a control and drive board, a heat sink, an integrated power module, a module adapter board, a bypass relay, a fast fuse, a copper bar, a DC bus PCB board, a DC capacitor, etc. The rear side of the unit main housing facilitates the installation and positioning of the power unit module; the unit inlet cable is changed to an upper inlet method and is connected from the upper rear side of the unit main housing, reducing the cable length from the unit to the secondary side of the transformer; an integrated power module (integrating a rectifier bridge and an IGBT) is adopted and fixed on the heat sink substrate, which is fixed above the power unit, reducing the number of devices and increasing the power density; the bypass relay is welded to the module adapter board to meet the bypass output during a fault; the fast fuse is fixed to the module adapter board, and the module adapter board is welded to the integrated power module; the DC capacitor is fixed on the inner bottom plate of the main housing and is connected to the integrated power module through the DC bus PCB board and the copper bar. This power unit module has the characteristics of small volume, high integration, low cost, high assembly and maintenance efficiency, etc. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 is a schematic diagram of the external structure of the present utility model;

[0016] Figure 2 is Figure 1 a rear view;

[0017] Figure 3 is Figure 1 a split structure schematic diagram;

[0018] As shown in the figure, unit main housing 1, cables 2, control and drive board 3, heat sink 4, integrated power module 5, module adapter board 6, bypass relay 7, fast fuse 8, copper bar 9, DC bus PCB board 10, DC capacitor 11, side plate 12, grid type through-wall terminal 13. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0019] As shown in the figure, the present utility model is a power integration module type power unit, including: unit main housing 1, cables 2, control and drive board 3, heat sink 4, integrated power module 5, module adapter board 6, bypass relay 7, fast fuse 8, copper bar 9, DC bus PCB board 10, DC capacitor 11, side plate 12 and grid type through-wall terminal 13.

[0020] The rear side of the unit main housing 1 is fixed by a several-shaped buckle, which facilitates the installation and positioning of the power unit module, and the front side is fixed to the cabinet insulator through bolts; the side plate 12 is installed on the side of the unit main housing; the grid type through-wall terminal 13 is fixed to the upper front part of the unit main housing and is connected to the integrated power module 5 inside the unit main housing through a cable.

[0021] The incoming cable 2 of the unit is changed to the top-incoming method and is connected from the upper rear side of the unit main housing 1, reducing the cable length from the unit to the secondary side of the transformer;

[0022] The control drive board 3 is installed inside the unit main housing 1, below the heat sink, with the model number TK-MD-V2.30. Its function is to provide signals for the drive board and monitor in real time (reduce the drive line length and lower the stray inductance);

[0023] The power device adopts an integrated power module (the rectifier bridge and IGBT are integrated) 5, which is fixed to the substrate of the heat sink 4 by bolts and is fixed above the power unit, reducing the number of devices and increasing the power density;

[0024] The bypass relay 7 is welded to the module adapter board 6 to meet the bypass output during a fault;

[0025] The fast fuse 8 is fixed to the module adapter board 6, and the module adapter board 6 is welded to the integrated power module 5;

[0026] The DC bus PCB board 10 replaces the original connection bar and connects the DC capacitor 11 and the integrated power module 5 through the copper bar 9.

[0027] The utility model discloses a power integrated module type power unit, which solves the problems of low power density, complex structure and high cost of the power unit module. On the basis of meeting the electrical performance of the power unit, the installation steps are simplified, the number of internal components and wiring are reduced, and it has the characteristics of small volume, high integration, low cost, high assembly and maintenance efficiency, etc.

[0028] Although the embodiments of the present utility model have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present utility model, and the scope of the present utility model is defined by the appended claims and their equivalents.

Claims

1. A power integration module type power unit, characterized in that, It includes a unit main housing (1), a cable (2), a control and drive board (3), a heat sink (4), an integrated power module (5), a module adapter board (6), a bypass relay (7), a fast fuse (8), a copper busbar (9), a DC bus PCB board (10), a DC capacitor (11), a side plate (12), and a fence type through-wall terminal (13). The side plate (12) is mounted on the side of the main housing (1). Inside the main housing (1), there are a control and drive board (3), a heat sink (4), an integrated power module (5), a module adapter board (6), a bypass relay (7), a copper busbar (9), a DC bus PCB board (10), and a DC capacitor (11). The unit incoming cable (2) enters from the upper rear side of the unit main housing (1). The control and drive board (3) is arranged below the heat sink (4) inside the unit main housing (1). The integrated power module (5) is fixed on the substrate of the heat sink (4) and is installed above the inside of the unit main housing (1). The module adapter board (6) is fixed to the integrated power module (5). The bypass relay (7) is fixed to the module adapter board (6). The fast fuse (8) is fixed to the module adapter board (6). The DC capacitor (11) is fixed on the inner bottom plate of the unit main housing (1) and is connected to the integrated power module (5) through the DC bus PCB board (10) and the copper busbar (9).

2. The power unit of the power integration module type according to claim 1, characterized in that, The unit incoming cable (2) is in the way of top incoming and is connected from the upper rear side of the unit main housing, reducing the cable length from the unit to the secondary side of the transformer.

3. The power unit of the power integration module type according to claim 1, characterized in that, The bypass relay (7) is welded to the module adapter board to meet the bypass output in case of a fault.

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