CN219536669U

CN219536669U - Controller assembly structure

Info

Publication number: CN219536669U
Application number: CN202223594500.1U
Authority: CN
Inventors: 张凌志
Original assignee: Wuxi Zhidong Mechanical And Electrical Equipment Co ltd
Current assignee: Wuxi Zhidong Mechanical And Electrical Equipment Co ltd
Priority date: 2022-12-31
Filing date: 2022-12-31
Publication date: 2023-08-15
Anticipated expiration: 2032-12-31

Abstract

The utility model relates to a controller assembly structure. The utility model comprises a shell, wherein the shell comprises a bottom plate and side plates extending along two side ends of the bottom plate, a mounting cavity is formed between the bottom plate and the two side plates, and a containing groove and a spring plate clamping groove are arranged in the mounting cavity; an insulating film placed in the accommodating groove; the insulating frame is placed on the surface of the insulating film, the insulating frame is provided with a placing lattice, a heat-conducting aluminum block is placed in the placing lattice, and the lower surface of the heat-conducting aluminum block is clung to the surface of the insulating film; the circuit assembly comprises a circuit board and a power tube connected to the circuit board; the spring piece comprises a fixing piece and a pressing piece which is elastically connected with the fixing piece, the fixing piece stretches into and is clamped in the elastic piece clamping groove, and the power tube is pressed on the upper surface of the heat conduction aluminum block through the elastic force of the pressing piece. The utility model can ensure the stable installation of the power tube and can improve the heat dissipation and the heat conductivity of the power tube.

Description

Controller assembly structure

Technical Field

The utility model relates to the technical field of structural design of electric vehicle controllers, in particular to a controller assembly structure.

Background

At present, the electric vehicle controller is a central control part of the electric vehicle, and has high requirements on heat dissipation and internal heating value control of a shell structure because of long-term stable work. Meanwhile, higher production efficiency is increasingly pursued in the production process of the controller, and the production cost is lower in a more reliable assembly production mode.

In the design board layout scheme of a controller circuit board with higher power, a plurality of power tube parallel modes are adopted for the UVW three-phase switch power tubes, the UVW three-phase switch power tubes are divided into an upper circuit power tube and a lower circuit power tube, and thus one controller power tube is divided into 6 groups of power tubes; when the board is distributed, the upper circuit power tube and the lower circuit power tube of the UVW three-phase switch power tube are symmetrically distributed, the distance between the two groups of power tubes is close to the current passing effect, and the heat productivity of the controller is smaller; meanwhile, the control part circuit of the singlechip of the controller is complicated, and the part circuit also leads out the connector, so that the singlechip control part circuit of the controller has wider width to accommodate the required circuit. When the existing circuit board is assembled with the heat dissipation shell, a stretched aluminum shell with higher heat conductivity coefficient cannot be selected as the assembly, and the stretched aluminum shell is uniform in front-back shape and size; only die-cast aluminum heat dissipation shells with higher cost and lower heat conductivity can be selected.

The traditional electric vehicle controller heat dissipation assembly structure generally adopts a structure that a UVW three-phase switch power tube is welded on a controller circuit board, and a layer of insulating film is isolated between a radiating fin of the power tube and a radiating aluminum shell and is adhered together; when the power tube is excessively high in current, the heat dissipation fin of the power tube is small in size and limited in heat capacity, and the insulating film has a large blocking effect on heat conduction, so that heat of the power tube cannot be dissipated, and finally the power tube is overheated and fails.

Disclosure of Invention

In order to solve the technical problems, the utility model provides a controller assembly structure which can improve the heat dissipation of a power tube and the heat conductivity of the whole controller.

In order to solve the above technical problems, the present utility model provides a controller assembly structure, including:

the shell comprises a bottom plate and side plates extending along two side ends of the bottom plate, an installation cavity is formed between the bottom plate and the two side plates, and an accommodating groove and a spring plate clamping groove are formed in the installation cavity;

an insulating film placed in the accommodating groove;

the insulating frame is arranged on the surface of the insulating film, a placing lattice is arranged in the insulating frame, a heat-conducting aluminum block is placed in the placing lattice, and the lower surface of the heat-conducting aluminum block is clung to the surface of the insulating film;

the circuit assembly comprises a circuit board and a power tube connected to the circuit board;

the spring piece comprises a fixing piece and a pressing piece which is elastically connected with the fixing piece, the fixing piece stretches into and is clamped in the elastic piece clamping groove, and the power tube is pressed on the upper surface of the heat conduction aluminum block through the elastic force of the pressing piece.

In one embodiment of the utility model, a flange edge extends on the bottom plate at a position close to the side plate, and the spring plate clamping groove is formed between the flange edge and the side plate.

In one embodiment of the present utility model, the receiving groove is disposed on one side of the flange and is disposed parallel to the flange.

In one embodiment of the present utility model, the insulating frame is rectangular, and the placement grid is rectangular and one or three placement grids are distributed along the insulating frame.

In one embodiment of the utility model, the power tube comprises a W-phase lower circuit power tube, a V-phase lower circuit power tube and a U-phase lower circuit power tube which are all welded at the side end of the circuit board, and the W-phase lower circuit power tube, the V-phase lower circuit power tube and the U-phase lower circuit power tube are respectively clung to the upper surface of the heat conduction aluminum block.

In one embodiment of the utility model, the outer shell is an integrally drawn aluminum shell.

In one embodiment of the utility model, the cross section of the spring piece is 7-shaped, the side end of the pressing piece is provided with barb pieces, and the barb pieces are contacted with the upper surface of the power tube.

Compared with the prior art, the technical scheme of the utility model has the following advantages:

the controller assembly structure disclosed by the utility model is compact in structure, the power tube is pressed on the upper surface of the heat-conducting aluminum block by the elastic force of the pressing sheet, and the heat-conducting aluminum block is attached to the surface of the heat-radiating aluminum shell through the insulating film, so that the power tube can be stably installed and operated, the heat radiation performance of the power tube is improved, and the overall heat radiation and heat conductivity of the controller are improved.

Drawings

In order that the utility model may be more readily understood, a more particular description of the utility model will be rendered by reference to specific embodiments thereof that are illustrated in the appended drawings.

Fig. 1 is a schematic diagram of the assembly structure of the controller of the present utility model.

Fig. 2 is an exploded view of the controller assembly structure of the present utility model.

Description of the specification reference numerals: 1. a housing; 11. a bottom plate; 111. a flange edge; 12. a side plate; 13. a mounting cavity; 14. a receiving groove; 15. a spring clip slot; 2. an insulating film; 3. an insulating frame; 31. placing a lattice; 4. a thermally conductive aluminum block; 5. a circuit assembly; 51. a circuit board; 52. a power tube; 521. w-phase lower circuit power tube; 522. v-phase lower circuit power tube; 523. u-phase lower circuit power tube; 6. a spring piece; 61. a fixing piece; 62. pressing the sheet; 621. barb pieces.

Detailed Description

The present utility model will be further described with reference to the accompanying drawings and specific examples, which are not intended to be limiting, so that those skilled in the art will better understand the utility model and practice it.

In the present utility model, if directions (up, down, left, right, front and rear) are described, they are merely for convenience of description of the technical solution of the present utility model, and do not indicate or imply that the technical features must be in a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present utility model.

In the present utility model, "a plurality of" means one or more, and "a plurality of" means two or more, and "greater than", "less than", "exceeding", etc. are understood to not include the present number; "above", "below", "within" and the like are understood to include this number. In the description of the present utility model, the description of "first" and "second" if any is used solely for the purpose of distinguishing between technical features and not necessarily for the purpose of indicating or implying a relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated.

In the present utility model, unless clearly defined otherwise, terms such as "disposed," "mounted," "connected," and the like should be construed broadly and may be connected directly or indirectly through an intermediate medium, for example; the connecting device can be fixedly connected, detachably connected and integrally formed; can be mechanically connected, electrically connected or capable of communicating with each other; may be a communication between two elements or an interaction between two elements. The specific meaning of the words in the utility model can be reasonably determined by a person skilled in the art in combination with the specific content of the technical solution.

Referring to fig. 1 to 2, a controller assembly structure of the present utility model includes:

the shell 1, the shell 1 comprises a bottom plate 11 and side plates 12 extending along two side ends of the bottom plate 11, a mounting cavity 13 is formed between the bottom plate 11 and the two side plates 12, and a containing groove 14 and a spring plate clamping groove 15 are arranged in the mounting cavity 13;

an insulating film 2, wherein the insulating film 2 is placed in the accommodating groove 14;

the insulating frame 3 is arranged on the surface of the insulating film 2, the insulating frame 3 is provided with a placing lattice 31, a heat conduction aluminum block 4 is placed in the placing lattice 31, and the lower surface of the heat conduction aluminum block 4 is tightly attached to the surface of the insulating film 2;

a circuit assembly 5, wherein the circuit assembly 5 comprises a circuit board 51 and a power tube 52 connected to the circuit board 51;

the spring piece 6, the spring piece 6 includes a fixing piece 61 and a pressing piece 62 elastically connected with the fixing piece 61, the fixing piece 61 stretches into and is clamped in the spring piece clamping groove 15, and the power tube 52 is pressed on the upper surface of the heat conduction aluminum block 4 by the elastic force of the pressing piece 62.

Through the arrangement, the power tube 52 is pressed on the upper surface of the heat conduction aluminum block 4 by the elastic force of the pressing sheet 62, and the heat conduction aluminum block 4 is attached to the surface of the heat dissipation aluminum housing 1 through the insulating film 2, so that the stable installation of the power tube 52 can be ensured, and the heat dissipation and the heat conductivity of the power tube 52 can be improved.

Specifically, a flange 111 extends on the bottom plate 11 near the side plate 12, and the spring clip slot 15 is formed between the flange 111 and the side plate 12.

Specifically, the accommodating groove 14 is disposed on one side of the flange 111 and is disposed parallel to the flange 111.

Specifically, the insulating frame 3 is in a cuboid shape and is made of insulating materials, the placing grids 31 are rectangular and are distributed with one or three placing grids 31 along the insulating frame 3, and when three placing grids 31 are arranged, the heat conducting aluminum blocks 4 are respectively placed in the three placing grids 31. By the arrangement of the insulating frame 3, the insulating frame 3 also supports the edge of the circuit board 51 while accommodating the heat conductive aluminum block 4.

Specifically, the power tube 52 includes a W-phase lower circuit power tube 521, a V-phase lower circuit power tube 522, and a U-phase lower circuit power tube 523, which are all welded to the side end of the circuit board 51, and the W-phase lower circuit power tube 521, the V-phase lower circuit power tube 522, and the U-phase lower circuit power tube 523 are respectively in close contact with the upper surface of the heat conductive aluminum block 4.

Specifically, the housing 1 is an integrally stretched aluminum housing.

Specifically, the cross section of the spring piece 6 is 7-shaped, the side end of the pressing piece 62 is distributed with a barb piece 621, and the barb piece 621 contacts with the upper surface of the power tube 52.

In the assembly process, the circuit board 51 of the welding power tube 52 is placed in the mounting cavity 13, the fixing piece 61 stretches into and is clamped in the elastic piece clamping groove 15, the power tube 52 is tightly pressed on the upper surface of the heat conduction aluminum block 4 through the elastic force of the pressing piece 62, the heat conduction aluminum block 4 is attached to the surface of the heat dissipation aluminum shell 1 through the insulating film 2, the stable mounting of the power tube 52 can be ensured, and the heat dissipation of the power tube 52 and the overall heat conductivity of the controller can be improved.

Finally, it should be noted that the above-mentioned embodiments are only for illustrating the technical solution of the present utility model, and not for limiting the same, and although the present utility model has been described in detail with reference to examples, it should be understood by those skilled in the art that modifications and equivalents may be made to the technical solution of the present utility model without departing from the spirit and scope of the technical solution of the present utility model, and all such modifications and equivalents are intended to be encompassed in the scope of the claims of the present utility model.

Claims

1. A controller assembly structure, comprising:

the shell (1), the shell (1) comprises a bottom plate (11) and side plates (12) extending along two side ends of the bottom plate (11), a mounting cavity (13) is formed between the bottom plate (11) and the two side plates (12), and a containing groove (14) and a spring plate clamping groove (15) are arranged in the mounting cavity (13);

an insulating film (2), wherein the insulating film (2) is placed in the accommodating groove (14);

the insulation frame (3), the insulation frame (3) is placed on the surface of the insulation film (2), the insulation frame (3) is provided with a placing lattice (31), a heat conduction aluminum block (4) is placed in the placing lattice (31), and the lower surface of the heat conduction aluminum block (4) is tightly attached to the surface of the insulation film (2);

a circuit assembly (5), the circuit assembly (5) comprising a circuit board (51) and a power tube (52) connected to the circuit board (51);

the spring piece (6), spring piece (6) include stationary blade (61) and with stationary blade (61) elastic connection's pressure piece (62), stationary blade (61) stretch into and joint in shell fragment draw-in groove (15), compress tightly power tube (52) in heat conduction aluminium piece (4) upper surface through the elastic force of pressure piece (62).

2. A controller assembly structure according to claim 1, wherein a flange (111) extends on the bottom plate (11) at a position close to the side plate (12), and the spring clip slot (15) is formed between the flange (111) and the side plate (12).

3. A controller assembling structure according to claim 2, wherein said receiving groove (14) is provided on one side of said flange edge (111) and is disposed in parallel with said flange edge (111).

4. A controller assembly structure according to claim 1, wherein the insulating frame (3) is rectangular, and the placement cells (31) are rectangular and distributed along the insulating frame (3) with one or three.

5. The controller assembly structure according to claim 4, wherein the power tube (52) comprises a W-phase lower circuit power tube (521), a V-phase lower circuit power tube (522) and a U-phase lower circuit power tube (523) which are all welded to the side end of the circuit board (51), and the W-phase lower circuit power tube (521), the V-phase lower circuit power tube (522) and the U-phase lower circuit power tube (523) are respectively attached to the upper surface of the heat conducting aluminum block (4).

6. A controller assembly structure according to claim 1, wherein the housing (1) is an integrally drawn aluminium shell.

7. The controller assembling structure according to claim 1, wherein the cross section of the spring piece (6) is 7-shaped, the side end of the pressing piece (62) is provided with barb pieces (621), and the barb pieces (621) are in contact with the upper surface of the power tube (52).