A silicone sealing device for circuit boards in new energy vehicles

Abstract

This utility model discloses a silicone sealing device for circuit boards of new energy vehicles, including a box body, a conduit, a cover, and a sealing structure. In this utility model, after the sealing ring is placed in the placement groove, the cover and box body are closed, pressing the sealing ring into the placement groove and pressure groove. At this time, the pressure head is inserted into the recess, which is U-shaped. After the pressure head is inserted, a self-tightening seal is achieved. The higher the pressure, the better the sealing effect. Simultaneously, the pressure block pushes the sealing ring downwards, causing it to fill the pressure groove and placement groove under force, resulting in a tighter seal. The outer side of the sealing ring is coated with a barrier layer, which effectively prevents water and oxygen corrosion, thus achieving water and oxygen barrier and improving the service life of the sealing ring. This sealing structure seals the connection between the box body and the cover, providing better sealing performance compared to existing sealing structures.

Description

Technical Field

[0001] This utility model relates to the field of circuit board technology, specifically to a silicone sealing device for circuit boards of new energy vehicles. Background Technology

[0002] The circuit board of a new energy vehicle is the core component of its electronic control system, responsible for functions such as battery management, motor control, energy distribution, and charging management. In order to protect the circuit board of a new energy vehicle, it needs to be fixed in a protective box and sealed with a silicone sealing device.

[0003] Existing patent CN211982224U discloses a circuit board fixing and sealing structure for an electronic expansion valve, which relates to the field of electronic expansion valves. It aims to solve the problems of filling the injection-molded housing cavity with silicone, which affects the sealing effect, vibration resistance, and production cycle time, and the need for ultrasonic welding equipment for the injection-molded cover plate, making it difficult to guarantee the welding seal.

[0004] The above-mentioned technology or existing silicone sealing devices have the following problems:

[0005] Existing silicone sealing devices have simple structures, and most of them achieve sealing by simply squeezing the box body and the lid together, resulting in relatively poor sealing performance. Utility Model Content

[0006] The purpose of this invention is to provide a silicone sealing device for circuit boards of new energy vehicles, so as to solve the problems mentioned in the background art.

[0007] To achieve the above objectives, the present invention adopts the following technical solution: a silicone sealing device for circuit boards of new energy vehicles, comprising a box body, a conduit provided on the box body, a box cover provided on the box body, a sealing structure provided at the connection between the box body and the box cover, the sealing structure comprising a placement groove, the placement groove provided on the box body, a pressure groove provided on the box cover, a sealing ring placed in the placement groove, and the sum of the heights of the placement groove and the pressure groove being less than the thickness of the sealing ring.

[0008] Preferably, a pressing block is provided inside the pressing groove. There are two pressing blocks, located at the left and right ends of the pressing groove respectively, and the surface of the pressing block is inclined.

[0009] Preferably, a pressure head is provided in the pressure groove, and a notch is provided on the sealing ring.

[0010] Preferably, the notch is U-shaped, and when the sealing ring is in its unstressed natural state, the distance between the upper ends of the notch is less than the width of the pressure head.

[0011] Preferably, a positioning block is provided inside the placement groove, and a positioning port is provided at the lower end of the sealing ring. After the sealing ring is placed in the placement groove, the positioning block and the positioning port are aligned.

[0012] Preferably, when the sealing ring is in its unstressed, natural state, the depth of the center of the positioning opening is greater than the height of the positioning block.

[0013] Preferably, a barrier layer is sprayed on the outer side of the sealing ring.

[0014] Compared with the prior art, the beneficial effects of this utility model are:

[0015] After the sealing ring is placed in the placement groove, the lid and body of the box are closed, pressing the sealing ring into the placement groove and the pressure groove. At this time, the pressure head will be inserted into the notch. The "U"-shaped notch can achieve a self-tightening seal after the pressure head is inserted. The higher the pressure, the better the sealing effect. At the same time, the pressure block will push the sealing ring downward, so that it is filled into the pressure groove and the placement groove under force, resulting in a tighter sealing effect. The outer side of the sealing ring is coated with a barrier layer, which can effectively prevent water and oxygen corrosion, thereby achieving water and oxygen barrier and improving the service life of the sealing ring. The sealing structure seals the connection between the box body and the box lid, and its sealing performance is better than that of the existing sealing structure. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of this utility model;

[0017] Figure 2 This is a schematic cross-sectional view of the sealing structure of this utility model;

[0018] Figure 3 This is a schematic diagram of the sealing ring of this utility model in its natural, unforced state.

[0019] In the diagram: Box body-1, Conduit-2, Box cover-3, Sealing structure-4, Placement groove-41, Pressure groove-42, Sealing ring-43, Pressure block-44, Pressure head-45, Notch-46, Positioning block-47, Positioning port-48, Barrier layer-49. Detailed Implementation

[0020] To further explain the technical solution of this utility model, a detailed description is provided below through specific embodiments.

[0021] Please see Figure 1 and Figure 2 This utility model provides a silicone sealing device for circuit boards of new energy vehicles, including a box body 1, into which the new energy vehicle circuit board can be installed. A box cover 3 is installed on the box body 1 by bolts to protect the new energy vehicle circuit board. A conduit 2 is provided on the side of the box body 1 for placing the wiring. A sealing structure 4 is provided at the connection between the box body 1 and the box cover 3.

[0022] Please see Figure 2 and Figure 3 This utility model provides a silicone sealing device for circuit boards of new energy vehicles. The sealing structure 4 includes a placement groove 41. The placement groove 41 is provided at the connection between the box body 1 and the box cover 3. The box cover 3 is provided at the connection between the box body 1 and the box cover 3. A sealing ring 43 is placed in the placement groove 41. The total height of the placement groove 41 and the pressure groove 42 is less than the thickness of the sealing ring 43.

[0023] Specifically, the sealing ring 43 is placed in the placement groove 41. When the lid 3 is pressed on the surface of the box body 1, the pressing groove 42 and the placement groove 41 will squeeze the sealing ring 43, so that it fills the pressing groove 42 and the placement groove 41, thereby sealing the connection between the box body 1 and the lid 3. The sealing ring 43 is made of silicone.

[0024] In this invention, a pressure block 44 is integrally formed on the inner side of the pressure groove 42. There are two pressure blocks 44, which are located at the left and right ends of the pressure groove 42 respectively. The surface of the pressure block 44 is inclined. When the sealing ring 43 is pressed in the placement groove 41, the pressure block 44 will push the sealing ring 43 better, so that the sealing ring 43 is pressed more tightly in the placement groove 41, and the sealing ring 43 has higher sealing performance.

[0025] In this utility model, a pressure head 45 is integrally formed in the middle of the pressure groove 42, and a notch 46 is provided on the sealing ring 43. The notch 46 is U-shaped. When the sealing ring 43 is in a natural state without force, the distance between the upper end ports of the notch 46 is less than the width of the pressure head 45. After the pressure head 45 is inserted, the U-shaped notch 46 can achieve a self-tightening seal. The higher the pressure, the better the sealing effect.

[0026] In this utility model, a positioning block 47 is provided inside the placement groove 41, and a positioning port 48 is provided at the lower end of the sealing ring 43. After the sealing ring 43 is placed in the placement groove 41, the positioning block 47 and the positioning port 48 are aligned to achieve pre-fixation after the sealing ring 43 is placed in.

[0027] When the sealing ring 43 is in its unstressed natural state, the depth of the middle part of the positioning port 48 is greater than the height of the positioning block 47, so that the sealing ring 43 can be pressed tightly onto the surface of the positioning block 47 when it is under pressure, thus improving the sealing performance.

[0028] The outer side of the sealing ring 43 is coated with a barrier layer 49 for water and oxygen barrier, which improves the service life of the sealing ring 43.

[0029] Specifically, after the sealing ring 43 is placed in the placement groove 41, the lid 3 and the box body 1 are closed, and the sealing ring 43 is pressed into the placement groove 41 and the pressure groove 42. At this time, the pressure head 45 will be inserted into the notch 46. The "U"-shaped notch 46 can achieve a self-tightening seal after the pressure head 45 is inserted. The higher the pressure, the better the sealing effect. At the same time, the pressure block 44 will push the sealing ring 43 downward, so that it is filled into the pressure groove 42 and the placement groove 41 under force, resulting in a tighter sealing effect. The outer side of the sealing ring 43 is coated with a barrier layer 49, which can effectively prevent water and oxygen erosion, thereby achieving water and oxygen barrier and improving the service life of the sealing ring 43. The sealing structure 4 seals the connection between the box body 1 and the lid 3, and the sealing performance is better than the existing sealing structure.

[0030] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A silica gel sealing device for a new energy automobile circuit board, comprising a box body (1), a wire tube (2) is arranged on the box body (1), a box cover (3) is arranged on the box body (1), characterized in that: It also includes a sealing structure (4), where a sealing structure (4) is provided at the connection between the box body (1) and the box cover (3). The sealing structure (4) includes a placement groove (41), a placement groove (41) is provided on the box body (1), and a pressure groove (42) is provided on the box cover (3). A sealing ring (43) is placed in the placement groove (41), and the sum of the heights of the placement groove (41) and the pressure groove (42) is less than the thickness of the sealing ring (43).

2. The silica gel sealing device for a circuit board of a new energy vehicle according to claim 1, characterized in that: A pressure block (44) is provided inside the pressure groove (42). There are two pressure blocks (44), which are located at the left and right ends of the pressure groove (42) respectively, and the surface of the pressure block (44) is inclined. 3.The silica gel sealing device for a circuit board of a new energy vehicle according to claim 1, characterized in that: A pressure head (45) is provided in the pressure groove (42), and a notch (46) is provided on the sealing ring (43).

4. The silica gel sealing device for a circuit board of a new energy vehicle according to claim 3, characterized in that: The notch (46) is U-shaped. When the sealing ring (43) is in a natural state without force, the distance between the upper end ports of the notch (46) is less than the width of the pressure head (45).

5. The silica gel sealing device for a circuit board of a new energy vehicle according to claim 1, characterized in that: The placement groove (41) is provided with a positioning block (47), and the lower end of the sealing ring (43) is provided with a positioning port (48). After the sealing ring (43) is placed in the placement groove (41), the positioning block (47) and the positioning port (48) are connected. 6.The silica gel sealing device for a circuit board of a new energy vehicle according to claim 5, characterized in that: When the sealing ring (43) is in a natural, unforced state, the depth of the middle part of the positioning port (48) is greater than the height of the positioning block (47). 7.The silica gel sealing device for a circuit board of a new energy vehicle according to claim 1, characterized in that: The outer side of the sealing ring (43) is coated with a barrier layer (49).

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