Fixing structure of MOS tube of controller

Abstract

The utility model relates to a fixing structure of a controller MOS tube, and belongs to the technical field of controllers, the fixing structure is used for fixing the MOS tube, the fixing structure comprises a base and a pressing block, the base and the pressing block are arranged in an attached mode, a screw joint piece is arranged on the base in a penetrating mode, one end of the screw joint piece is screwed into the pressing block, one side, facing the base, of the pressing block is provided with a containing cavity, and the containing cavity is communicated with the base. And the accommodating cavity is used for accommodating the MOS tube module. The base and the pressing block are connected through the screw joint piece, and the MOS tube is pressed between the base and the pressing block through connection of the base and the pressing block, so that the installation position of the MOS tube is more stable and reliable, connection between the pin of the MOS tube and the circuit board is more stable, and the reliability of the electric vehicle is greatly improved when the electric vehicle runs.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of controller, in particular to a fixing structure of controller MOS tube. BACKGROUND

[0002] The electric vehicle is mainly composed of motor, battery, control system, brake system and the like. The control system is one of the core components of the electric vehicle, which is responsible for controlling the operation of the motor and the driving state of the vehicle. The control system usually includes controller, sensor and circuit components, among which the controller generally uses MOS tube. The MOS tube is installed on the base and connected to the circuit board through the pin to realize the functions of quick switching, current adjustment and the like of the electric vehicle control system. Therefore, the stable operation of the MOS tube is particularly important during the use of the electric vehicle.

[0003] At present, the adhesion of the MOS tube and the base is mainly realized by the spring sheet deformation pressure combination. For example, the Chinese patent with the publication number CN206775890U discloses a spring fixed MOS tube shell device of electric vehicle controller, which includes a MOS tube installation base arranged at one end of the length direction of the inner cavity of the shell, a guide rail arranged at the top of the installation base, a fulcrum protruding column arranged at the top of the inner cavity of the shell near the MOS tube installation base, a gap formed between the fulcrum protruding column and the guide rail, and a clamping groove arranged at the lower part of the other end of the length direction of the inner cavity of the shell. The MOS tube is clamped and pressed on the MOS tube installation base by the spring sheet.

[0004] For the related technology in the above, the electric vehicle will produce continuous vibration during operation. If the controller MOS tube is fixed by using the spring sheet, since the spring sheet structure is a cantilever structure, the cantilever part of the spring sheet has a long arm length and a thin thickness, the ratio of the horizontal arm length to the horizontal arm thickness is large, the connection between the spring sheet and the base is unstable, and the spring sheet is easy to loosen, which will cause the pins of the MOS tube of the controller to fall off from the circuit board, greatly reducing the reliability of the electric vehicle during operation. Therefore, the problem needs to be solved urgently. Content of the utility model

[0005] In order to solve the problem that the spring sheet is easy to loosen, which will cause the pins of the MOS tube of the controller to fall off from the circuit board, greatly reducing the reliability of the electric vehicle during operation, the present application provides a fixing structure of controller MOS tube.

[0006] The fixing structure of controller MOS tube provided by the present application adopts the following technical scheme:

[0007] A fixing structure of controller MOS tube for fixing the MOS tube, comprising a base and a pressing block, the base and the pressing block are arranged in adhesion, a screw joint is arranged on the base, one end of the screw joint is screwed into the pressing block, a receiving cavity is arranged on the side of the pressing block facing the base, and the receiving cavity is used for accommodating the MOS tube module.

[0008] By adopting the technical scheme, the base and the pressing block are connected by the screwing piece, the MOS tube is pressed between the base and the pressing block through the connection of the two, the installation position of the MOS tube is more stable and reliable, and the connection between the pin of the MOS tube and the circuit board is more stable, so that the reliability of the electric vehicle during operation is greatly improved.

[0009] Preferably, a countersunk hole is formed on the side of the base away from the pressing block, a threaded hole is formed on the pressing block, the screwing piece comprises a head and a connecting portion, the head and the connecting portion are fixedly connected, when the base and the pressing block are connected by the screwing piece, the connecting portion is threadedly connected in the threaded hole through the countersunk hole, and the head is arranged in the countersunk hole.

[0010] By adopting the technical scheme, when the operator assembles and connects, the pressing block is placed in the preset position, then the connecting portion of the screwing piece is inserted into the threaded hole through the countersunk hole, the connecting portion is threadedly connected with the threaded hole, and the head is moved into the countersunk hole, so that the stable connection of the base and the pressing block is realized, and the installation is convenient.

[0011] Preferably, the pressing block is provided with a pressing portion, the pressing portion comprises a first pressing surface and a second pressing surface, the first pressing surface and the second pressing surface are perpendicularly connected, the MOS tube is provided with a first end surface and a second end surface, the first end surface and the second end surface are perpendicularly connected, the first pressing surface is attached to the first end surface of the MOS tube, and the second pressing surface is attached to the second end surface.

[0012] By adopting the technical scheme, the pressing block is attached to the MOS tube through the pressing portion, which is beneficial to promoting the heat dissipation of the MOS tube, and is further beneficial to ensuring the operation safety of the controller.

[0013] Preferably, an adjusting gasket for the screwing piece to pass through is arranged between the base and the pressing block.

[0014] By adopting the technical scheme, the adjustment and flexible installation of the screwing piece in connecting the base and the pressing block are facilitated.

[0015] Preferably, a first heat dissipation groove is arranged on the side of the base away from the pressing block.

[0016] Preferably, a second heat dissipation groove is arranged on the side of the pressing block away from the base.

[0017] By adopting the technical scheme, the cooperation of the first heat dissipation groove and the second heat dissipation groove is more beneficial to the heat dissipation of the MOS tube, improves the use safety of the structure itself, and prolongs the service life of the controller.

[0018] Preferably, the pressing block is made of the same material as the base.

[0019] Preferably, the pressing block and the base are both made of aluminum material.

[0020] By adopting the above technical scheme, the thermal expansion and cold shrinkage rates of the pressing block and the base are consistent, thereby ensuring that the product can deform relatively uniformly when the product as a whole expands and shrinks, and reducing the possibility of local shape failure of the product caused by long-term environmental changes.

[0021] To sum up, the present application has at least one of the following beneficial technical effects:

[0022] 1. The base and the pressing block are connected by the screwing piece, the MOS tube is pressed between the base and the pressing block through the connection of the two, so that the installation position of the MOS tube is more stable and reliable, and the connection between the pin of the MOS tube and the circuit board is more stable, thereby greatly improving the reliability of the electric vehicle during operation.

[0023] 2. The pressing block and the base are made of the same material, so that the thermal expansion and cold shrinkage rates of the pressing block and the base are consistent, thereby ensuring that the product can deform relatively uniformly when the product as a whole expands and shrinks, and reducing the possibility of local shape failure of the product caused by long-term environmental changes. BRIEF DESCRIPTION OF DRAWINGS

[0024] Figure 1 is the overall structure schematic diagram of the fixing structure of the controller MOS tube in the embodiment of the present application.

[0025] Figure 2 is the separation state schematic diagram of the fixing structure in the embodiment of the present application.

[0026] Marked: 1, base; 11, first heat dissipation groove; 2, pressing block; 21, second heat dissipation groove; 22, threaded hole; 3, pressing part; 31, first pressing surface; 32, second pressing surface; 33, third pressing surface; 4, MOS tube; 41, first end surface; 42, second end surface; 43, third end surface; 5, accommodating cavity; 6, screwing piece; 61, head; 62, connecting part; 7, adjusting gasket; 71, flat gasket; 72, spring gasket. DETAILED DESCRIPTION

[0027] The following will be combined with the drawings Figures 1-2 The present application will be further described in detail.

[0028] The embodiment of the present application discloses a fixing structure of a controller MOS tube, referring to Figure 1 The fixing structure is used for fixing the MOS tube 4, and the fixing structure comprises a base 1 and a pressing block 2, and the base 1 and the pressing block 2 are arranged in close contact.

[0029] Referring to Figure 1The compression block 2 is fixedly connected with a pressing part 3. After the compression block 2 and the pressing part 3 are connected, a containing cavity 5 is formed on the side of the base 1, and the containing cavity 5 is used for containing a MOS tube 4 module. The pressing part 3 comprises a first pressing surface 31 and a second pressing surface 32. The first pressing surface 31 is perpendicularly connected with the second pressing surface 32. The MOS tube 4 is provided with a first end surface 41 and a second end surface 42. The first end surface 41 is perpendicularly connected with the second end surface 42. When the MOS tube 4 is arranged in the containing cavity 5, the first pressing surface 31 is attached to the first end surface 41 of the MOS tube 4, and the second pressing surface 32 is attached to the second end surface 42.

[0030] With reference to Figure 1 The MOS tube 4 is further provided with a third end surface 43. The third end surface 43 is parallel to the second end surface 42 and is attached to the base 1. The compression block 2 is attached to the MOS tube 4 through the pressing part 3, so that the heat conduction and dissipation are promoted, the heat dissipation of the MOS tube 4 is facilitated, and the operation safety of the controller is ensured.

[0031] With reference to Figure 1 In order to further promote the heat dissipation of the controller, the base 1 is provided with a first heat dissipation groove 11 on the side away from the compression block 2. The compression block 2 is provided with a second heat dissipation groove 21 on the side away from the base 1. The cooperation of the first heat dissipation groove 11 and the second heat dissipation groove 21 is more conducive to the heat dissipation of the MOS tube 4, improves the use safety of the structure itself, and prolongs the service life of the controller.

[0032] With reference to Figure 1 In order to make the connection between the base 1 and the compression block 2 more stable and reliable, the fixing structure further comprises a screw element 6. The screw element 6 comprises a head 61 and a connecting part 62. The head 61 and the connecting part 62 are fixedly connected. The base 1 is provided with a countersunk hole on the side away from the compression block 2. The compression block 2 is provided with a threaded hole 22. When the base 1 and the compression block 2 are connected through the screw element 6, the connecting part 62 is screwed into the threaded hole 22 through the countersunk hole, and the head 61 is arranged in the countersunk hole. When the operator assembles and connects, the compression block 2 is placed in a predetermined position, and then the connecting part 62 of the screw element 6 is inserted into the threaded hole 22 through the countersunk hole. The connecting part 62 is screwed into the threaded hole 22, and the head 61 is moved into the countersunk hole. The stable connection of the base 1 and the compression block 2 can be realized, and the installation is convenient.

[0033] The base 1 and the compression block 2 are connected through the screw element 6. The MOS tube 4 is arranged between the base 1 and the compression block 2 through the connection of the two, so that the installation position of the MOS tube 4 is more stable and reliable, and the connection between the pin of the MOS tube 4 and the circuit board is more stable. The reliability of the electric vehicle during operation is greatly improved.

[0034] With reference to Figure 1, the adjusting gasket 7 is provided between the base 1 and the pressing block 2, the adjusting gasket 7 is provided with the screwing piece 6, the adjusting gasket 7 comprises a flat gasket 71 and a spring gasket 72, the flat gasket 71 and the spring gasket 72 abut, the flat gasket 71 abuts the base 1, and the spring gasket 72 abuts the pressing block 2. The adjusting gasket 7 is convenient for adjusting the connection between the base 1 and the pressing block 2 when the screwing piece 6 is connected, and the adjusting gasket 7 is convenient for flexible installation.

[0035] With reference to Figure 1 The pressing block 2 is made of the same material as the base 1, the pressing block 2 and the base 1 are made of aluminum, so that the thermal expansion and cold shrinkage rates of the pressing block 2 and the base 1 are consistent, and then the deformation of the whole product is relatively consistent when the whole product is thermally expanded and cold shrunk, and the possibility of local shape failure of the product caused by long-term environmental changes is reduced.

[0036] The implementation principle of the fixing structure of the controller MOS tube is as follows:

[0037] The pressing block 2 and the base 1 are made of aluminum, which is beneficial to keeping the deformation consistent after long-term use, the base 1 and the pressing block 2 are connected by the screwing piece 6, the MOS tube 4 is pressed between the base 1 and the pressing block 2 through the connection of the two, so that the installation position of the MOS tube 4 is more stable and reliable, and then the connection between the pin of the MOS tube 4 and the circuit board is more stable, so that the reliability of the electric vehicle during operation is greatly improved.

[0038] The above are preferred embodiments of the application, and are not used to limit the protection scope of the application, so that: any equivalent changes made according to the structure, shape and principle of the application should be covered in the protection scope of the application.

Claims

1. A fixing structure of a controller MOS transistor for fixing a MOS transistor (4), characterized by: Including base (1) and briquetting (2), base (1) and briquetting (2) are attached, screwing piece (6) is arranged on base (1), one end of screwing piece (6) is screwed into briquetting (2), accommodating cavity (5) is opened on the side of briquetting (2) towards base (1), accommodating cavity (5) is used for accommodating MOS tube (4) module.

2. The controller MOS transistor fixing structure according to claim 1, wherein: The side of base (1) away from briquetting (2) is provided with a countersunk hole, the briquetting (2) is provided with a threaded hole (22), the screwing piece (6) includes a head (61) and a connecting part (62), the head (61) and the connecting part (62) are fixedly connected, when the base (1) is connected with the briquetting (2) by the screwing piece (6), the connecting part (62) is screwed into the threaded hole (22) through the countersunk hole, and the head (61) is arranged in the countersunk hole.

3. The controller MOS transistor fixing structure according to claim 1, wherein: The briquetting (2) is provided with a pressing part (3), the pressing part (3) includes a first pressing surface (31) and a second pressing surface (32), the first pressing surface (31) and the second pressing surface (32) are vertically connected, the MOS tube (4) is provided with a first end surface (41) and a second end surface (42), the first end surface (41) and the second end surface (42) are vertically connected, the first pressing surface (31) is attached to the first end surface (41) of the MOS tube (4), and the second pressing surface (32) is attached to the second end surface (42).

4. The controller MOS transistor fixing structure according to claim 1, wherein: The base (1) and the briquetting (2) are provided with an adjusting gasket (7) for the screwing piece (6) to pass through.

5. The structure for holding a controller MOS transistor as defined in claim 1, wherein: The side of base (1) away from briquetting (2) is provided with a first heat dissipation groove (11).

6. The structure for holding a controller MOS transistor according to claim 1, wherein: The side of briquetting (2) away from base (1) is provided with a second heat dissipation groove (21).

7. The structure for holding a controller MOS transistor as defined in claim 1, wherein: The briquetting (2) is made of the same material as the base (1).

8. The controller MOS transistor fixing structure according to claim 7, wherein: The briquetting (2) and the base (1) are made of aluminum material.

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