Spring fixing MOS tube shell device of electric vehicle controller

Abstract

The utility model relates to the technical field of electric vehicles, in particular to an electric vehicle controller spring fixing MOS tube shell device which comprises an installation cover plate, a plurality of screws and a shell body, the lower end face of the installation cover plate is provided with two rectangular frames and a first sealing ring, the inner bottom of the shell body is provided with a plurality of supporting blocks and a spring piece, the supporting blocks are provided with a PCB, and the PCB is provided with a second sealing ring. The PCB is provided with an MOS tube, the outer side of the housing is provided with a plurality of anti-moving plates, the front end face of the housing is provided with two rectangular grooves, the rectangular grooves are internally provided with second sealing rings, and the arrangement of the rectangular blocks and the anti-moving plates can facilitate the improvement of the stability between the installation cover plate and the housing, thereby avoiding the movement of the installation cover plate. And meanwhile, a first sealing ring is arranged on the lower end face of the mounting cover plate, and a second sealing ring is arranged in the rectangular groove, so that water can be effectively prevented from entering, and the sealing performance between the mounting cover plate and the shell is further improved.

Description

Technical Field

[0001] The utility model relates to the technical field of electric vehicles, in particular to a spring-fixed MOS tube housing device for an electric vehicle controller. Background Art

[0002] All electric vehicle controllers require a housing, which can not only protect the internal PCB board but also play a role in heat dissipation, dissipating heat for the MOS tubes on the board. Currently, the production process of electric vehicle controllers is very complex, consuming a large amount of human resources and having a relatively low production efficiency, especially the installation of the key device of the controller - the motor drive MOS tubes. Generally, the number of motor drive MOS tubes required for an electric vehicle controller varies according to specifications, with 6, 9, 12, 15 or even more. When using a common controller housing, the motor drive MOS tubes must be pre-processed before the production of the controller. First, the motor drive MOS tubes are fixed on an aluminum bar (for heat dissipation), and insulation must be provided between the MOS tubes and the aluminum bar. Then, the MOS tubes together with the aluminum bar are installed on the controller PCB board. After the PCB board is produced, it is inserted into the housing, and the aluminum bar and the housing are fixed with screws, so that the PCB board is installed in the housing. It is the process of fixing the MOS tubes to the aluminum bar that is all completed manually. After putting insulating particles on the screws, each MOS tube is fixed to the aluminum bar, and the screws must be perpendicular without any skew, otherwise the insulating particles will be worn through. Therefore, the work of this position is very heavy, the qualified rate is relatively low, and a lot of human resources are consumed.

[0003] The prior art patent CN206775890U discloses a spring-fixed MOS tube housing device for an electric vehicle controller, which includes an integrated housing. One end of the inner cavity of the housing along the length direction is provided with a MOS tube mounting base, a guiding track is arranged on the top of the mounting base, and a fulcrum convex column extending downward is arranged at the top of one side of the inner cavity of the housing close to the MOS tube mounting base. A gap is formed between the fulcrum convex column and the guiding track. A clamping groove is arranged at the lower part of the other end of the inner cavity of the housing along the length direction. The prior art product adopts an integrated housing and a spring piece, so that the traditional pre-processing process of MOS tubes is not required before production. When the PCB board assembly is produced, the MOS tubes can be directly installed on the PCB board. When the PCB board is installed in the housing, the spring piece is directly used to press and fix it in the housing. Screw holes are respectively arranged at the four corners of the housing and the middle position of the top of the housing. The cover plate is installed through the screw holes, and at the same time, the cover plate is installed on both sides of the housing to realize the sealing of the whole controller, and the whole production process is simplified, which not only saves human resources but also improves the production efficiency.

[0004] However, in the above prior art, when using screws to fix the mounting cover plate and the housing, since the mounting cover plate is easy to move on the housing, it is not convenient for the installation of the screws, and the sealing performance between the mounting cover plate and the housing is poor, which is likely to cause water ingress. Summary of the Utility Model

[0005] The purpose of the present utility model is to provide a spring-fixed MOS tube housing device for an electric vehicle controller, aiming to solve the technical problems in the prior art that when using the screws to fix the mounting cover plate and the housing, since the mounting cover plate is prone to move on the housing, it is not convenient for the installation of the screws, and the sealing performance between the mounting cover plate and the housing is poor, thus easily leading to water ingress.

[0006] To achieve the above object, a spring-fixed MOS tube housing device for an electric vehicle controller adopted by the present utility model includes a mounting cover plate, a plurality of screws, and a housing. Two rectangular frames and a first sealing ring are provided on the lower end surface of the mounting cover plate, and the first sealing ring is located between the two rectangular frames. A plurality of support blocks and spring sheets are provided on the inner bottom of the housing. A PCB board is provided on the plurality of support blocks, and a MOS tube is provided on the PCB board. An installation seat is provided on one inner side of the housing. A guiding track is provided on the top of the installation seat. A groove is provided on one side of the installation seat away from the guiding track. A fulcrum stud extending downward is provided on the inner top of the housing. A gap is formed between the fulcrum stud and the guiding track. A plurality of anti-shift plates are provided on the outer side of the housing. Two rectangular grooves are provided on the front end surface of the housing. A second sealing ring is provided in the rectangular grooves. Mounting holes are provided at the four bottom corners of the mounting cover plate and the housing. The MOS tube is clamped on the installation seat by the spring sheet, and the spring sheet abuts against the lower part of the fulcrum stud. One end of the spring sheet is inserted into the groove, and the other end of the spring sheet abuts against the MOS tube. The mounting cover plate is fixedly connected to the housing by the screws and is located on the front end surface of the housing, and the two rectangular frames are located in the corresponding rectangular grooves.

[0007] Wherein, the bending angle of the spring sheet is 85°.

[0008] Wherein, the outer end of the guiding track has an inclination angle.

[0009] Wherein, the spring-fixed MOS tube housing device for an electric vehicle controller further includes a plurality of heat dissipation teeth, and the plurality of heat dissipation teeth are respectively fixedly connected to the housing and are located on the outer side of the housing.

[0010] Wherein, the heat dissipation teeth are corrugated teeth.

[0011] Wherein, the spring sheet is composed of a horizontal sheet and a vertical sheet. A bent head is provided at the outer end of the horizontal sheet, and a spring pressing foot is provided at the lower end of the vertical sheet.

[0012] Wherein, clamping seats are provided on both inner sides of the housing, and the clamping seats are located below the mounting seat. The PCB board is slidably connected to the corresponding clamping seat and is located between the two clamping seats.

[0013] A spring-fixed MOS tube housing device for an electric vehicle controller according to the present utility model includes a mounting cover plate, a plurality of screws, and a housing. Two rectangular frames and a first sealing ring are provided on the lower end surface of the mounting cover plate, and the first sealing ring is located between the two rectangular frames. A plurality of support blocks and spring pieces are provided on the inner bottom of the housing. A PCB board is provided on the plurality of support blocks, and a MOS tube is provided on the PCB board. A mounting seat is provided on one inner side of the housing. A guiding track is provided on the top of the mounting seat. A groove is provided on one side of the mounting seat away from the guiding track. A fulcrum stud extending downward is provided on the inner top of the housing. A plurality of anti-shift plates are provided on the outer side of the housing. Two rectangular grooves are provided on the front end surface of the housing. A second sealing ring is provided in the rectangular grooves. Mounting holes are provided at the four bottom corners of the mounting cover plate and the housing. The MOS tube is clamped on the mounting seat by the spring piece, and the spring piece abuts below the fulcrum stud. One end of the spring piece is inserted into the groove, and the other end of the spring piece abuts against the MOS tube. By providing the rectangular block and the anti-shift plate, the stability between the mounting cover plate and the housing can be improved, thereby preventing the mounting cover plate from moving. At the same time, by providing the first sealing ring on the lower end surface of the mounting cover plate and the second sealing ring in the rectangular groove, water ingress can be effectively prevented, and thus the sealing performance between the mounting cover plate and the housing is improved. Description of the Drawings

[0014] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present utility model. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0015] Figure 1 is a schematic internal structure diagram of the first embodiment of the present utility model.

[0016] Figure 2 is a front view of the first embodiment of the present utility model.

[0017] Figure 3 is of the present utility model Figure 2 cross-sectional view taken along line A-A.

[0018] Figure 4 is of the present utility model Figure 3Partial enlarged view at B in the [device].

[0019] Figure 5 It is a three-dimensional perspective view of the second embodiment of the present utility model.

[0020] Figure 6 It is a side view of the second embodiment of the present utility model.

[0021] Figure 7 It is of the present utility model Figure 6 Cross-sectional view taken along line C-C in the [device].

[0022] 101 - mounting cover plate, 102 - screw, 103 - housing, 104 - rectangular frame, 105 - first sealing ring, 106 - support block, 107 - spring piece, 108 - PCB board, 109 - MOS transistor, 110 - mounting seat, 111 - guiding track, 112 - groove, 113 - fulcrum stud, 114 - anti-displacement plate, 115 - rectangular groove, 116 - second sealing ring, 117 - mounting hole, 201 - heat dissipation teeth, 202 - horizontal piece, 203 - vertical piece, 204 - bent head, 205 - spring pressure foot, 206 - card holder. Specific embodiments

[0023] The embodiments of the present utility model will be described in detail below. Examples of the embodiments are shown in the accompanying drawings, where the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to explain the present utility model and should not be construed as limiting the present utility model.

[0024] First embodiment:

[0025] Please refer to Figures 1 to 4 , where Figure 1 is a schematic diagram of the internal structure of the first embodiment of the present utility model, Figure 2 is a front view of the first embodiment of the present utility model, Figure 3 is of the present utility model Figure 2 Cross-sectional view taken along line A-A in the [device], Figure 4 is of the present utility model Figure 3 Partial enlarged view at B in the [device].

[0026] The present utility model provides a spring-fixed MOS transistor housing device for an electric vehicle controller, including a mounting cover plate 101, a plurality of screws 102, and a housing 103. By the foregoing solution, when fixing the mounting cover plate 101 and the housing 103 with the screw 102, since the mounting cover plate 101 is prone to move on the housing 103, it is not convenient for the installation of the screw 102, and the sealing performance between the mounting cover plate 101 and the housing 103 is poor, thus easily leading to water ingress.

[0027] For this specific embodiment, two rectangular frames 104 and a first sealing ring 105 are provided on the lower end surface of the mounting cover plate 101, and the first sealing ring 105 is located between the two rectangular frames 104. A plurality of support blocks 106 and spring pieces 107 are provided on the inner bottom of the housing 103. A PCB board 108 is provided on the plurality of support blocks 106, and a MOS tube 109 is provided on the PCB board 108. A mounting seat 110 is provided on one inner side of the housing 103. A guiding track 111 is provided on the top of the mounting seat 110. One side of the mounting seat 110 away from the guiding track 111 has a groove 112. A fulcrum stud 113 extending downward is provided on the inner top of the housing 103. A gap is formed between the fulcrum stud 113 and the guiding track 111. A plurality of anti-displacement plates 114 are provided on the outer side of the housing 103. Two rectangular grooves 115 are provided on the front end surface of the housing 103. A second sealing ring 116 is provided in the rectangular grooves 115. Mounting holes 117 are provided at the four bottom corners of the mounting cover plate 101 and the housing 103. The MOS tube 109 is clamped on the mounting seat 110 by the spring piece 107, and the spring piece 107 abuts against the lower part of the fulcrum stud 113. One end of the spring piece 107 is inserted into the groove 112, and the other end of the spring piece 107 abuts against the MOS tube 109. The mounting cover plate 101 is fixedly connected to the housing 103 by the screw 102 and is located on the front end surface of the housing 103, and the two rectangular frames 104 are located in the corresponding rectangular grooves 115. By providing the rectangular block and the anti-displacement plates 114, the stability between the mounting cover plate 101 and the housing 103 can be improved, thereby preventing the mounting cover plate 101 from moving. At the same time, by providing the first sealing ring 105 on the lower end surface of the mounting cover plate 101 and the second sealing ring 116 in the rectangular grooves 115, water ingress can be effectively prevented, thereby improving the sealing performance between the mounting cover plate 101 and the housing 103. When the spring piece 107 clamps the MOS tube 109, the spring piece 107 slides along the inclined surface of the guiding track 111 into the groove 112, and at this time, the spring piece 107 is in place; the support point for the spring piece 107 to undergo elastic deformation is the bottom of the fulcrum stud 113, and the fulcrum stud 113 directly abuts against the top of the spring piece 107, causing the spring piece 107 to undergo elastic deformation, thereby pressing the MOS tube 109 tightly.

[0028] Wherein, the bending angle of the spring piece 107 is 85°.

[0029] Secondly, the outer end of the guiding track 111 has an inclination angle.

[0030] When using the present utility model to install the installation cover plate 101, place the installation cover plate 101 on the front end face of the housing 103, align the rectangular frame 104 with the rectangular groove 115, then combine the installation cover plate 101 with the housing 103, and finally fix it with the screw 102. During the process of thread fastening, the first sealing ring 105 contacts the front end face of the housing 103, thereby preventing water from entering. At the same time, the second sealing ring 116 contacts the rectangular frame 104, further playing a role of secondary sealing, effectively improving the sealing performance between the installation cover plate 101 and the housing 103. And when the installation cover plate 101 is combined with the housing 103, the anti-displacement plate 114 can prevent the installation cover plate 101 from being displaced, thus facilitating the installation of the installation cover plate 101.

[0031] The second embodiment is as follows:

[0032] Based on the first embodiment, please refer to Figures 5 to 7 , where Figure 5 is the three-dimensional perspective view of the second embodiment of the present utility model, Figure 6 is the side view of the second embodiment of the present utility model, Figure 7 is the Figure 6 cross-sectional view taken along the C-C line in the present utility model.

[0033] The present utility model provides a spring-fixed MOS tube housing device for an electric vehicle controller, which further includes a plurality of heat dissipation teeth 201.

[0034] For this specific embodiment, the plurality of heat dissipation teeth 201 are respectively fixedly connected to the housing 103 and are located outside the housing 103. The heat dissipation teeth 201 can play a role in dissipating heat from the housing 103, thereby preventing the situation that the PCB assembly is burned out due to high temperature.

[0035] Among them, the heat dissipation teeth 201 are corrugated teeth. By setting the structure of the heat dissipation teeth 201 as corrugated teeth, the heat dissipation effect can be improved.

[0036] Among them, the spring piece 107 is composed of a horizontal piece 202 and a vertical piece 203. A bent head 204 is arranged at the outer end of the horizontal piece 202, and a spring pressing foot 205 is arranged at the lower end of the vertical piece 203. When using the spring piece 107 to clamp the MOS tube 109, the bent head 204 slides along the inclined surface of the guiding track 111 into the groove 112. At this time, the spring piece 107 is placed in place, and the fulcrum convex column 113 will squeeze the horizontal piece 202 downward, giving a downward force to the horizontal piece 202 and the vertical piece 203, causing the entire spring piece 107 to deform. In the limited space between the fulcrum convex column 113 and the guiding track 111, according to the lever principle, the spring pressing foot 205 presses on the MOS tube 109, and then generates a pressure on the MOS tube 109, pressing the MOS tube 109 tightly on the mounting seat 110.

[0037] Among them, clamping seats 206 are arranged on both inner sides of the housing 103, and the clamping seats 206 are located below the mounting seat 110. The PCB board 108 is slidably connected to the corresponding clamping seats 206 and is located between the two clamping seats 206. The clamping seats 206 can facilitate restricting the displacement of the PCB board 108 and at the same time support the PCB board 108.

[0038] When using the spring-fixed MOS tube housing device of an electric vehicle controller in this embodiment, the heat dissipation teeth 201 can play a role in dissipating heat from the housing 103, thereby avoiding the situation that the PCB assembly is burned out due to high temperature. The structure of the heat dissipation teeth 201 is set as corrugated teeth, so as to improve the heat dissipation effect. When using the spring piece 107 to clamp the MOS tube 109, the bent head 204 slides along the inclined surface of the guiding track 111 into the groove 112. At this time, the spring piece 107 is placed in place, and the fulcrum convex column 113 will squeeze the horizontal piece 202 downward, giving a downward force to the horizontal piece 202 and the vertical piece 203, causing the entire spring piece 107 to deform. In the limited space between the fulcrum convex column 113 and the guiding track 111, according to the lever principle, the spring pressing foot 205 presses on the MOS tube 109, and then generates a pressure on the MOS tube 109, pressing the MOS tube 109 tightly on the mounting seat 110. The clamping seats 206 can facilitate restricting the displacement of the PCB board 108 and at the same time support the PCB board 108.

[0039] The above-disclosed is only a preferred embodiment of the present utility model. Of course, it cannot be used to limit the scope of rights of the present utility model. Those of ordinary skill in the art can understand all or part of the processes of implementing the above embodiments, and the equivalent changes made according to the claims of the present utility model still fall within the scope covered by the utility model.

Claims

1. A spring-fixed MOS tube housing device for an electric vehicle controller, characterized in that: The invention comprises a mounting cover plate, a plurality of screws and a shell, wherein the lower end surface of the mounting cover plate is provided with two rectangular frames and a first sealing ring, and the first sealing ring is located between the two rectangular frames, the inner bottom of the shell is provided with a plurality of supporting blocks and spring sheets, a plurality of supporting blocks are provided with PCB boards, a MOS tube is provided on the PCB board, a mounting seat is provided on an inner side of the shell, a guide track is provided on the top of the mounting seat, a groove is provided on the side of the mounting seat away from the guide track, a fulcrum boss extending downward is provided on the inner top of the shell, and a gap is formed between the fulcrum boss and the guide track. The outer side of the shell is provided with a plurality of anti-movement plates, the front end surface of the shell is provided with two rectangular grooves, a second sealing ring is provided in the rectangular groove, the mounting cover plate and the four bottom corners of the shell are provided with mounting holes, the MOS tube is clamped on the mounting seat by the spring sheet, and the spring sheet is against the bottom of the fulcrum boss, one end of the spring sheet is inserted into the groove, and the other end of the spring sheet is against the MOS tube, the mounting cover plate is fixedly connected to the shell by the screws, and is located on the front end surface of the shell, and the two rectangular frames are located in the corresponding rectangular grooves.

2. The electric vehicle controller spring fixed MOS tube housing device according to claim 1, characterized in that: The bending angle of the spring sheet is 85°.

3. The electric vehicle controller spring fixed MOS tube housing device as claimed in claim 2, characterized in that: The outer end of the guide rail has an inclination.

4. The electric vehicle controller spring fixed MOS tube housing device as claimed in claim 3, characterized in that: The electric vehicle controller spring-fixed MOS tube housing device also includes a plurality of heat dissipation teeth, which are respectively fixedly connected to the housing and located on the outside of the housing.

5. The electric vehicle controller spring fixed MOS tube housing device as claimed in claim 4, characterized in that: The heat dissipation teeth are corrugated teeth.

6. The electric vehicle controller spring fixed MOS tube housing device as claimed in claim 5, characterized in that: The spring sheet is composed of a transverse sheet and a longitudinal sheet. The outer end of the transverse sheet is provided with a bent head, and the lower end of the longitudinal sheet is provided with a spring pressure foot.

7. The electric vehicle controller spring fixed MOS tube housing device as claimed in claim 6, characterized in that: A card seat is arranged on both inner sides of the shell, and the card seat is located below the mounting seat. The PCB board is slidably connected to the corresponding card seat and is located between the two card seats.

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