Sectional structure for efficient assembly of an electric vehicle controller

Abstract

The utility model requests protect a section bar structure of electric motor car controller high -efficient assembly, it includes circuit board, casing, spring steel, side cover and ear piece, the casing includes front plate, bottom plate and back plate, the front plate sets up in the bottom plate front end, the back plate sets up in the bottom plate rear end, the circuit board sets up on the bottom plate, the circuit board has a plurality of MOS tubes, the MOS tube and front plate are pasted, spring steel sets up on the front plate, is used for clamping the MOS tube and front plate, side cover sets up two, and is located two sides of the bottom plate respectively, thereby with front plate and back plate enclose main circuit board, ear piece has two, and sets up on two side covers respectively, and the ear piece and side cover form have the outlet between. The utility model compared with the original use aluminium strip and screw fixed MOS tube mode, has saved 8 9 lock screw action, avoided the problem of slipping tooth in the process of locking screw, uses ear piece to replace the original cover plate simultaneously, has saved raw material, has lightened the weight of controller whole, has made the product more lightweight.

Description

Technical Field

[0001] This utility model relates to the field of controller technology, specifically to a profile structure for efficient assembly of an electric vehicle controller. Background Technology

[0002] Electric vehicle controllers, requiring heat dissipation, are generally designed using aluminum. Aluminum forming processes include die casting and aluminum profiles. Both conventional aluminum profile housings and die-cast aluminum housings use aluminum strips to secure the MOSFETs to the housing. In traditional die-cast aluminum controller designs, the conventional method for fixing the MOSFETs is with aluminum strips; securing six MOSFETs requires six screws. To aid MOSFET heat dissipation, the aluminum strips also need 2-3 screws to the bottom or side plates of the die-cast aluminum MOSFETs, again requiring 2-3 additional screws. All screws use M3 machine screws, which are prone to stripping during assembly, leading to scrapped aluminum strips and wasted rework. Due to waterproofing requirements, the controller requires full potting. Electrical cables typically exit from the top of the housing. To secure the cable exit, a notched cover is often used on the top of the die-cast aluminum housing. This cover also requires four M2.5 machine screws, again facing the risk of stripping and scrapping the entire aluminum housing. Meanwhile, due to the characteristics of its die-casting process, aluminum die casting has a lower forming density than profile aluminum casting, resulting in increased thermal resistance. Utility Model Content

[0003] To address the shortcomings of existing technologies, this utility model proposes a profile structure for efficient assembly of electric vehicle controllers, which uses spring steel to clamp the MOS transistor instead of screws for fixing, thereby accelerating the assembly speed.

[0004] The technical solution of this utility model is as follows:

[0005] A profile structure for efficient assembly of an electric vehicle controller includes a circuit board, a housing, spring steel, side covers, and ear pieces.

[0006] The housing includes a front plate, a bottom plate, and a rear plate. The front plate is located at the front end of the bottom plate, and the rear plate is located at the rear end of the bottom plate. The circuit board is located on the bottom plate and has several MOSFETs. The MOSFETs are attached to the front plate, and spring steel is located on the front plate to clamp the MOSFETs and the front plate.

[0007] There are two side covers, located on both sides of the base plate, which together with the front and rear plates enclose the main circuit board;

[0008] There are two ear pieces, which are respectively set on the two side covers, and a wire outlet is formed between the ear pieces and the side covers.

[0009] In summary, the above technical solution has the following beneficial effects: In terms of product function and form, this utility model is completely consistent with the traditional die-cast aluminum controller, with the same overhead electrical cable outlet. However, the assembly structure is completely different. After the circuit board of this application is slid into the housing from the side, the MOSFET is close to the front plate. The MOSFET can be fixed by clamping the MOSFET and the front plate with spring steel. Then, the side cover and the ear piece are fixed to both sides of the housing by screws to complete the assembly. Compared with the original method of fixing the MOSFET with aluminum strips and screws, it saves 8-9 screw tightening actions, avoids the problem of stripping the screws during the tightening process, speeds up the assembly speed, and at the same time, the ear piece replaces the original cover plate, saving raw materials, reducing the overall weight of the controller, and making the product lighter. Attached Figure Description

[0010] Figure 1 A schematic diagram of a housing structure for efficient assembly of an electric vehicle controller;

[0011] Figure 2 A schematic diagram of a MOSFET with a profile structure for efficient assembly of an electric vehicle controller;

[0012] Figure 3 A schematic cross-sectional view of the housing of a profile structure for efficient assembly of an electric vehicle controller;

[0013] Figure 4 A schematic diagram of a spring steel profile structure for efficient assembly of an electric vehicle controller;

[0014] Figure 5 This is a schematic diagram of a side cover for a profile structure used in the efficient assembly of an electric vehicle controller.

[0015] Reference numerals: 10, Circuit board; 11, MOSFET; 20, Housing; 21, Front plate; 22, Base plate; 23, Rear plate; 24, Slide groove; 30, Spring steel; 31, Upper plate; 32, Outer clamping plate; 33, Inner clamping plate; 331, Clamping ear; 34, Limiting strip; 40, Side cover; 50, Ear piece; 51, Cable outlet; 52, C-shaped plate; 53, Fixing ear; 54, Ear hole; 60, Rubber pad; 70, Cable protector. Detailed Implementation

[0016] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments. Identical components are indicated by the same reference numerals. It should be noted that the terms "front," "rear," "left," "right," "upper," and "lower" used in the following description refer to directions in the accompanying drawings, and the terms "bottom surface," "top surface," "inner," and "outer" refer to directions toward or away from the geometric center of a specific component, respectively.

[0017] like Figure 1 and Figure 2 As shown, a profile structure for efficient assembly of an electric vehicle controller includes a circuit board 10, a housing 20, a spring steel 30, side covers 40, and ear pieces 50. The housing 20 includes a front plate 21, a bottom plate 22, and a rear plate 23. The front plate 21 is located at the front end of the bottom plate 22, and the rear plate 23 is located at the rear end of the bottom plate 22. The circuit board 10 is located on the bottom plate 22 and has several MOSFETs 11. The MOSFETs 11 are attached to the front plate 21. The spring steel 30 is located on the front plate 21 to clamp the MOSFETs 11 and the front plate 21. Two side covers 40 are provided and located on both sides of the bottom plate 22, thereby surrounding the main circuit board 10 with the front plate 21 and the rear plate 23. Two ear pieces 50 are provided and are respectively located on the two side covers 40. A wire outlet 51 is formed between the ear pieces 50 and the side covers 40. This utility model is completely identical to the traditional die-cast aluminum controller in terms of product function and form, having the same overhead electrical cable outlet 51. However, the assembly structure is completely different. In this application, the circuit board 10 is slid into the housing 20 from the side, and the MOS transistor 11 is close to the front plate 21. The MOS transistor 11 is fixed by clamping the MOS transistor 11 and the front plate 21 with spring steel 30. Then, the side cover 40 and the ear piece 50 are fixed to both sides of the housing 20 by screws to complete the assembly. Compared with the original method of fixing the MOS transistor 11 with aluminum strips and screws, this method saves 8-9 screw tightening actions, avoids the problem of stripping threads during screw tightening, and speeds up the assembly. At the same time, replacing the original cover plate with the ear piece 50 saves raw materials, reduces the overall weight of the controller, and makes the product lighter.

[0018] like Figure 3 As shown, the front plate 21 and the rear plate 23 are provided with sliding grooves 24. The sliding grooves 24 are used to slide the circuit board 10 into the housing 20 from the side and fix the circuit board 10 vertically. The thickness of the sliding groove 24 is slightly greater than the thickness of the circuit board 10. It fixes the assembly height of the circuit board 10 in the housing 20, thereby better designing the height of the spring steel 30 so that the spring steel 30 can clamp the MOSFET 11 on the circuit board 10. There may be a certain distance between the MOSFET 11 and the edge of the circuit board 10. The front plate 21 is widened at the position of the MOSFET 11, so the depth of the sliding groove 24 is also deeper. This allows the MOSFET 11 to fit against the front plate 21 after the circuit board 10 is placed in the housing 20, making it easier for the spring steel 30 to clamp the MOSFET 11 and the front plate 21.

[0019] like Figure 4As shown, the spring steel 30 includes an upper plate 31, an outer clamping plate 32, and an inner clamping plate 33. The outer clamping plate 32 and the inner clamping plate 33 are respectively disposed at the front and rear ends of the upper plate 31, and both face downwards. The outer clamping plate 32 and the inner clamping plate 33 are used to clamp the MOSFET 11. The spring steel 30 is made of an elastic metal, and the angle between the outer clamping plate 32 and the inner clamping plate 33 and the upper plate 31 is slightly less than 90 degrees, so that the outer clamping plate 32 and the inner clamping plate 33 have clamping force.

[0020] The inner clamping plate 33 is divided into several clamping ears 331 according to the spacing of the MOSFET 11. Each clamping ear 331 corresponds to a MOSFET 11, thereby clamping the MOSFET 11 individually. The inner clamping plate 33 is divided into multiple clamping ears 331, which can save the amount of elastic steel and reduce the weight, but still has a good clamping effect.

[0021] Limiting strips 34 are provided on both sides of the inner clamping plate 33. The limiting strips 34 are closer to the rear clamping plate than the inner clamping plate 33. After the spring steel 30 clamps the MOSFET 11 and the front plate 21, the two limiting strips 34 are located at the outer edges of the MOSFET 11 on both sides, thereby restricting the lateral movement of the spring steel 30. The two limiting strips 34 can assist the installation of the spring steel 30. The distance between the two limiting strips 34 is equal to the width formed by all the MOSFETs 11 arranged together. After the spring steel 30 clamps the MOSFET 11 and the front plate 21, if the position is not aligned, the limiting strips 34 will press on the MOSFET 11, indicating that it is not installed in place. After installation, the limiting strips 34 are located at the edges of the MOSFETs 11 on both sides, and the middle clamping lugs 331 also correspond to each MOSFET 11, while restricting the lateral movement of the spring steel 30.

[0022] like Figure 5 As shown, a gasket 60 is provided between the side cover 40 and the housing 20. The gasket 60 is made of silicone, rubber, or other materials. The gasket 60 can increase the sealing between the side cover 40 and the housing 20 and prevent leakage during subsequent potting.

[0023] The ear piece 50 includes a C-shaped plate 52 and a fixing ear 53. The fixing ear 53 has two ears, which are located at both ends of the C-shaped plate 52. The fixing ear 53 has an ear hole 54 for screws to pass through. The cable outlet 51 is formed by the C-shaped plate 52 and the side cover 40. The cable outlet 51 is formed between the C-shaped plate 52 and the side cover 40 to allow electrical cables to pass through.

[0024] Screw holes are provided at the four corners of the side cover 40. The two ear holes 54 of the ear piece 50 are aligned with the two screw holes on the top of the side cover 40, so that they share screws with the side cover 40. This arrangement allows the ear piece 50 and the side cover 40 to be fixed together on the housing 20, requiring only eight screws for fixation.

[0025] A cable sheath 70 is provided in the recess of the C-shaped plate 52. The cable sheath 70 is made of silicone, rubber or other materials and is used to protect the electrical cables that pass through the outlet 51.

[0026] The cable sleeve 70 is C-shaped, corresponding to the shape of the recess in the C-shaped plate 52. The cross-section of the cable sleeve 70 is also C-shaped, used to hold the C-shaped plate 52 in place. The C-shaped plate 52 has a locking inlet on the side near the side cover 40, allowing the cable sleeve 70 to be pushed in from the outside and locked onto the C-shaped plate 52.

[0027] The above are merely preferred embodiments of this utility model. The protection scope of this utility model is not limited to the above embodiments. All technical solutions falling within the scope of this utility model's concept are within its protection scope. It should be noted that for those skilled in the art, any improvements and modifications made without departing from the principle of this utility model should also be considered within its protection scope.

Claims

1. A profile structure for efficient assembly of an electric vehicle controller, characterized in that, It includes a circuit board (10), a housing (20), spring steel (30), a side cover (40), and an ear piece (50); The housing (20) includes a front plate (21), a bottom plate (22) and a rear plate (23). The front plate (21) is located at the front end of the bottom plate (22), and the rear plate (23) is located at the rear end of the bottom plate (22). The circuit board (10) is located on the bottom plate (22) and has a plurality of MOS transistors (11). The MOS transistors (11) are attached to the front plate (21). The spring steel (30) is located on the front plate (21) and is used to clamp the MOS transistors (11) and the front plate (21). Two side covers (40) are provided and are located on both sides of the bottom plate (22) respectively, so as to surround the main circuit board (10) together with the front plate (21) and the rear plate (23); Two ear pieces (50) are provided on two side covers (40) respectively, and a wire outlet (51) is formed between the ear pieces (50) and the side covers (40).

2. The profile structure for efficient assembly of an electric vehicle controller according to claim 1, characterized in that, The front plate (21) and the rear plate (23) are provided with sliding grooves (24), which are used to allow the circuit board (10) to slide into the housing (20) from the side and to fix the circuit board (10) in the vertical direction.

3. The profile structure for efficient assembly of an electric vehicle controller according to claim 1, characterized in that, The spring steel (30) includes an upper plate (31), an outer clamping plate (32), and an inner clamping plate (33). The outer clamping plate (32) and the inner clamping plate (33) are respectively disposed at the front and rear ends of the upper plate (31) and both face downward. The outer clamping plate (32) and the inner clamping plate (33) are used to clamp the MOS transistor (11).

4. The profile structure for efficient assembly of an electric vehicle controller according to claim 3, characterized in that, The inner clip (33) is divided into several clips (331) according to the spacing of the MOS transistor (11). The clips (331) correspond one-to-one with the MOS transistor (11), thereby clamping the MOS transistor (11) individually.

5. The profile structure for efficient assembly of an electric vehicle controller according to claim 3, characterized in that, Limiting strips (34) are provided on both sides of the inner clamp (33). The limiting strips (34) are closer to the rear clamp than the inner clamp (33). When the spring steel (30) clamps the MOS tube (11) and the front plate (21), the two limiting strips (34) are located at the outer edges of the MOS tubes (11) on both sides, thereby restricting the lateral movement of the spring steel (30).

6. The profile structure for efficient assembly of an electric vehicle controller according to claim 1, characterized in that, A rubber gasket (60) is provided between the side cover (40) and the housing (20).

7. The profile structure for efficient assembly of an electric vehicle controller according to claim 1, characterized in that, The ear piece (50) includes a C-shaped plate (52) and a fixing ear (53). The fixing ear (53) has two and is located at both ends of the C-shaped plate (52). The fixing ear (53) has an ear hole (54) for the screw to pass through. The cable outlet (51) is formed by the C-shaped plate (52) and the side cover (40).

8. The profile structure for efficient assembly of an electric vehicle controller according to claim 7, characterized in that, The side cover (40) has screw holes at its four corners. The two ear holes (54) of the ear piece (50) are aligned with the two screw holes on the top of the side cover (40), so that they share screws with the side cover (40).

9. The profile structure for efficient assembly of an electric vehicle controller according to claim 7, characterized in that, A wire sheath (70) is provided in the recess of the C-shaped plate (52).

10. The profile structure for efficient assembly of an electric vehicle controller according to claim 9, characterized in that, The cable sleeve (70) is C-shaped, thus corresponding to the shape of the recessed part of the C-shaped plate (52). The cross section of the cable sleeve (70) is also C-shaped, which is used to hold the C-shaped plate (52).

Images