Connector sealing structure

Abstract

The utility model discloses a connector sealing structure which comprises a battery box body, a connector and a sealing ring, the side face of the battery box body is provided with an installation opening, the connector penetrates through the installation opening, the outer side face of the battery box body is provided with an annular groove surrounding the installation opening, and the sealing ring is arranged in the annular groove. The sealing ring comprises a first elastic ring, a second elastic ring and a third elastic ring which are sequentially connected from inside to outside, the second elastic ring extends into the annular groove, and the connector is matched with the outer side surface of the battery box body to clamp the first elastic ring and the third elastic ring; the sealing device has the advantage of good sealing performance.

Description

Technical Field

[0001] The utility model belongs to the technical field of connectors, and in particular relates to a connector sealing structure. Background Art

[0002] A connector is provided on the power battery of an electric vehicle, and a sealing ring is provided between the connector and the power battery. When the connector is matched with the box of the power battery, the sealing ring is pressed tightly, and the sealing effect is achieved by relying on the compression of the sealing ring.

[0003] The sealing effect of this sealing structure is affected by the flatness of the box mounting surface. The connector and the box mounting surface are generally directly connected by bolts. The bolt connection can easily cause the box mounting surface to deform, making it difficult to obtain a highly flat mounting surface, which is not conducive to ensuring the sealing effect. Under some complex and harsh working conditions, there is still a risk of water ingress between the power battery and the connector. If water ingress occurs, not only will there be serious safety hazards such as short circuit and fire, but the cost of repair and rework will also be very expensive. Utility Model Content

[0004] The technical problem to be solved by the utility model is to provide a connector sealing structure with high sealing performance.

[0005] The technical solution adopted by the present invention to solve the above-mentioned technical problems is: a connector sealing structure, including a battery case, a connector and a sealing ring, the side of the battery case is provided with a mounting opening, the connector passes through the mounting opening, the outer surface of the battery case is provided with an annular groove surrounding the mounting opening, the sealing ring includes a first elastic ring, a second elastic ring and a third elastic ring connected in sequence from the inside to the outside, the second elastic ring extends into the annular groove, and the connector cooperates with the outer side surface of the battery case to clamp the first elastic ring and the third elastic ring.

[0006] Preferably, a positioning ring is fixedly provided on a side of the connector facing the outer side of the battery box, and an annular positioning groove is provided on a side of the second elastic ring facing the connector, and the positioning ring is inserted into the positioning groove.

[0007] Preferably, two annular first elastic ribs are integrally provided on one side of the first elastic ring facing the outer side surface of the battery box, and the two first elastic ribs are distributed from the inside to the outside.

[0008] Preferably, a first convex ring is fixedly provided on the outer surface of the battery box, and the first convex ring extends between the two first elastic ribs.

[0009] Preferably, two annular second elastic ribs are integrally provided on one side of the second elastic ring facing the bottom of the annular groove, and the two second elastic ribs are distributed from the inside to the outside.

[0010] Preferably, a second convex ring is fixedly provided on the bottom of the annular groove, and the second convex ring extends between the two second elastic ribs.

[0011] Preferably, two annular third elastic ribs are integrally provided on one side of the third elastic ring facing the outer side of the battery box, and the two third elastic ribs are distributed from the inside to the outside.

[0012] Preferably, a third convex ring is fixedly provided on the outer surface of the battery box, and the third convex ring extends between the two third elastic ribs.

[0013] Preferably, a support ring corresponding to the annular groove is fixedly provided on the inner side surface of the battery box, and the width of the support ring is greater than the width of the annular groove.

[0014] Compared with the prior art, the advantages of the present invention are:

[0015] 1. Compared with conventional one-stage sealing rings, this sealing structure adds a first elastic ring and a third elastic ring. The connector cooperates with the outer side surface of the battery case to clamp the first and third elastic rings, and the connector cooperates with the annular groove to clamp the second elastic ring, achieving a three-stage seal. Even if the mounting surface of the battery case is deformed to a certain extent, the multi-layer protection is not easy to cause water ingress, and the sealing performance is good, which can ensure the sealing effect between the connector and the mounting surface of the battery case.

[0016] 2. The first elastic ring, the second elastic ring and the third elastic ring are connected in sequence from the inside to the outside, which facilitates one-time processing and assembly, and helps to improve production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural diagram of the utility model;

[0018] Figure 2 This is a schematic diagram of the explosion structure of the utility model;

[0019] Figure 3 This is a schematic diagram of the partial cross-sectional structure of the sealing ring in the present utility model;

[0020] Figure 4 This is a schematic diagram of the structure of the connector in the present utility model;

[0021] Figure 5 It is a schematic diagram of the cross-sectional structure of the utility model;

[0022] Figure 6 for Figure 5 A magnified schematic diagram of point A in the middle;

[0023] Figure 7This is a partial cross-sectional diagram of the battery box in this utility model. Figure 1 ;

[0024] Figure 8 This is a partial cross-sectional diagram of the battery box in this utility model. Figure 2 .

[0025] In the figure: 1. Battery case; 11. Mounting opening; 12. Annular groove; 13. First convex ring; 14. Second convex ring; 15. Third convex ring; 2. Connector; 21. Positioning ring; 3. Sealing ring; 31. First elastic ring; 311. First elastic rib; 32. Second elastic ring; 321. Positioning groove; 322. Second elastic rib; 33. Third elastic ring; 331. Third elastic rib; 4. Support ring. DETAILED DESCRIPTION

[0026] The present invention will be described in further detail below with reference to the accompanying drawings and embodiments.

[0027] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "inner," and "outer," etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings and are intended solely to facilitate the description of this utility model and simplify the description. They do not indicate or imply that the devices or components referred to must have a specific direction, be constructed, or operate in a specific direction. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0028] Example 1: Figures 1 to 6 As shown, a connector sealing structure includes a battery case 1, a connector 2 and a sealing ring 3. The side of the battery case 1 is provided with a mounting opening 11, and the connector 2 passes through the mounting opening 11. The outer surface of the battery case 1 is provided with an annular groove 12 surrounding the mounting opening 11. The sealing ring 3 includes a first elastic ring 31, a second elastic ring 32 and a third elastic ring 33 connected in sequence from the inside to the outside. The second elastic ring 32 extends into the annular groove 12. The connector 2 cooperates with the outer side surface of the battery case 1 to clamp the first elastic ring 31 and the third elastic ring 33.

[0029] In this embodiment, a positioning ring 21 is fixedly mounted on the side of the connector 2 facing the exterior of the battery case 1. An annular positioning groove 321 is provided on the side of the second elastic ring 32 facing the connector 2. The positioning ring 21 is inserted into the positioning groove 321. The positioning ring 21 cooperates with the positioning groove 321 to provide a positioning function, facilitating rapid assembly of the sealing ring 3 and preventing displacement of the sealing ring 3, thereby providing good stability.

[0030] By optimizing the design of the sealing ring 3 and the matching mode of the battery box 1, and utilizing different compression amounts and stepped matching, multi-layer and multi-stage sealing is achieved, which greatly reduces the risk of water ingress during use and improves reliability.

[0031] It should be noted that the battery case 1 in the accompanying drawings only shows a partial schematic diagram, the inside and outside of the battery case 1 refer to the inside and outside of the battery case 1, and the inside and outside of the sealing ring 3 refer to its inner circle direction and outer circle direction.

[0032] Example 2: Figure 3 As shown, the rest of the parts are the same as those in the first embodiment, except that two annular first elastic ribs 311 are integrally provided on one side of the first elastic ring 31 facing the outer side of the battery box 1, and the two first elastic ribs 311 are distributed from the inside to the outside.

[0033] In this embodiment, two annular second elastic ribs 322 are integrally provided on one side of the second elastic ring 32 facing the bottom of the annular groove 12 , and the two second elastic ribs 322 are distributed from the inside to the outside.

[0034] In this embodiment, two annular third elastic ribs 331 are integrally provided on one side of the third elastic ring 33 facing the outer side of the battery box 1 , and the two third elastic ribs 331 are distributed from the inside to the outside.

[0035] During assembly, the elastic ribs are easily deformed to fully fill the space between the connector 2 and the outer side of the battery box 1, resulting in a better sealing effect.

[0036] Example 3: Figure 3 and Figure 7 As shown, the rest of the parts are the same as those in the second embodiment, except that a first convex ring 13 is fixedly provided on the outer surface of the battery box 1 , and the first convex ring 13 extends between the two first elastic ribs 311 .

[0037] In this embodiment, a second protruding ring 14 is fixedly provided at the bottom of the annular groove 12 , and the second protruding ring 14 extends between the two second elastic ribs 322 .

[0038] In this embodiment, a third protruding ring 15 is fixedly provided on the outer surface of the battery box 1 , and the third protruding ring 15 extends between the two third elastic ribs 331 .

[0039] The setting of the first convex ring 13 can guide the first elastic ring 31 to deform in the direction away from the first convex ring 13, thereby avoiding the two first elastic rings 31 from deforming towards each other and interfering with each other, and the filling effect is better. The cooperation between the second convex ring 14 and the second elastic ring 32, and the cooperation between the third convex ring 15 and the third elastic ring 33 are the same; the setting of the first convex ring 13, the second convex ring 14 and the third convex ring 15 can also increase the sealing surface, which helps to improve the sealing effect; in addition, the first convex ring 13, the second convex ring 14 and the third convex ring 15 also help to improve the structural strength of the battery box 1, help to reduce the deformation of the side of the box during bolt connection, and thus ensure the flatness of the side of the box.

[0040] Example 4: Figure 8 As shown, the rest of the parts are the same as those in Example 1, except that a support ring 4 corresponding to the annular groove 12 is fixedly provided on the inner side of the battery case 1, and the width of the support ring 4 is greater than the width of the annular groove 12. The support ring 4 can improve the structural strength of the side of the case, reduce the deformation of the side of the case when the bolts are connected, and thus ensure the flatness of the side of the case, which helps to ensure the sealing effect.

[0041] In this embodiment, the support ring 4 is made of aluminum alloy material, which has good structural strength, is lightweight, corrosion-resistant, and easy to process. The support ring 4 can be welded to the inner side surface of the box body through a welding process.

[0042] The above is an exemplary description of the present invention in conjunction with the accompanying drawings. It is obvious that the implementation of the present invention is not limited to the above-mentioned method. As long as various improvements are made using the method concept and technical solution of the present invention, or the concept and technical solution of the present invention are directly applied to other occasions without improvement, they are all within the scope of protection of the present invention.

Claims

1. A connector sealing structure, comprising a battery box (1), a connector (2) and a sealing ring (3), wherein a mounting opening (11) is provided on a side of the battery box (1), and the connector (2) passes through the mounting opening (11), characterized in that The outer side surface of the battery case (1) is provided with an annular groove (12) surrounding the mounting opening (11); the sealing ring (3) comprises a first elastic ring (31), a second elastic ring (32) and a third elastic ring (33) which are sequentially connected from the inside to the outside; the second elastic ring (32) extends into the annular groove (12); the connector (2) cooperates with the outer side surface of the battery case (1) to clamp the first elastic ring (31) and the third elastic ring (33).

2. A connector sealing structure according to claim 1, characterized in that A positioning ring (21) is fixedly provided on one side of the connector (2) facing the outer side of the battery box (1), and an annular positioning groove (321) is provided on one side of the second elastic ring (32) facing the connector (2), and the positioning ring (21) is inserted into the positioning groove (321).

3. A connector sealing structure according to claim 1, characterized in that Two annular first elastic ribs (311) are integrally provided on one side of the first elastic ring (31) facing the outer side of the battery box (1), and the two first elastic ribs (311) are distributed from the inside to the outside.

4. A connector sealing structure according to claim 3, characterized in that A first convex ring (13) is fixedly arranged on the outer surface of the battery box (1), and the first convex ring (13) extends between the two first elastic convex ribs (311).

5. A connector sealing structure according to claim 1, characterized in that Two annular second elastic ribs (322) are integrally arranged on one side of the second elastic ring (32) facing the bottom of the annular groove (12), and the two second elastic ribs (322) are distributed from the inside to the outside.

6. A connector sealing structure according to claim 5, characterized in that A second convex ring (14) is fixedly arranged at the bottom of the annular groove (12), and the second convex ring (14) extends between the two second elastic convex ribs (322).

7. A connector sealing structure according to claim 1, characterized in that Two annular third elastic ribs (331) are integrally provided on one side of the third elastic ring (33) facing the outer side of the battery box (1), and the two third elastic ribs (331) are distributed from the inside to the outside.

8. A connector sealing structure according to claim 7, characterized in that A third convex ring (15) is fixedly arranged on the outer side surface of the battery box (1), and the third convex ring (15) extends between the two third elastic convex ribs (331).

9. A connector sealing structure according to claim 1, characterized in that A support ring (4) corresponding to the annular groove (12) is fixedly arranged on the inner side surface of the battery box (1), and the width of the support ring (4) is greater than the width of the annular groove (12).

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