Pipe connection structure and liquid cooling system

Abstract

The application relates to the technical field of batteries and discloses a pipeline connecting structure and a liquid cooling system. The liquid cooling pipe joint structure comprises a first joint, a second joint and a sealing piece, the second joint is sleeved on the first joint, the sealing piece is sleeved outside the first joint and connected between the first joint and the second joint, and the sealing piece is in interference fit with the second joint. During installation, the second joint can be sleeved along the edge of the sealing piece and pressed on the sealing piece, so that the sealing property between the second joint and the first joint is ensured, the sealing effect is improved, the liquid leakage phenomenon is prevented, and the practicability is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of battery, in particular to a pipeline connection structure and a liquid cooling system. BACKGROUND

[0002] The power battery assembly is widely used in various industries due to its characteristics of high power and stable voltage output. The battery module is the core component of the power battery assembly, and its importance is self-evident. The liquid cooling device is the main component of the power battery thermal management system, and it is responsible for cooling, heating, and temperature balancing of the battery module.

[0003] A connector is usually connected to the liquid cooling device, and the connector communicates with the liquid cooling pipeline. The liquid cooling pipeline can fill the liquid cooling device with cooling liquid. The liquid cooling pipeline connection includes a second connector and a first connector connected to each other. The second connector is used to communicate with the external water pipe, and the first connector is connected to the liquid cooling device. In the prior art, during the circulation of the cooling liquid, the joint position between the second connector and the first connector may have a liquid leakage phenomenon, resulting in poor practicability.

[0004] Therefore, there is an urgent need to provide a pipeline connection structure and a liquid cooling system to solve the above problems. SUMMARY

[0005] According to one aspect of the present application, the purpose of the present application is to provide a pipeline connection structure that can improve the sealing performance, prevent liquid leakage, and improve the practicability.

[0006] To achieve the above purpose, the present application realizes the following technical solutions:

[0007] A pipeline connection structure, comprising:

[0008] a first connector;

[0009] a second connector, which is sleeved on the first connector;

[0010] a sealing element, which is sleeved on the first connector and connected between the first connector and the second connector, and the sealing element is in interference fit with the second connector.

[0011] As a preferred scheme of the pipeline connection structure, a convex structure is provided on the outer wall of the sealing element and surrounds the circumference, and the convex structure is in interference fit with the second connector.

[0012] As a preferred scheme of the pipeline connection structure, the number of the convex structures is set to be multiple, and the multiple convex structures are arranged in the axial direction of the sealing element.

[0013] As a preferred scheme of the pipeline connection structure, the boss structure comprises a guide segment and a sealing segment connected with each other, the guide segment is inclined to the direction of the sleeve of the second joint, and the second joint can be pressed on the sealing segment.

[0014] As a preferred scheme of the pipeline connection structure, the length of the sealing segment of each boss structure increases gradually along the sleeve direction of the second joint.

[0015] As a preferred scheme of the pipeline connection structure, the axial section of the boss structure first contacted with the second joint on the sealing piece is triangular.

[0016] As a preferred scheme of the pipeline connection structure, the sealing piece comprises a first sealing part and a second sealing part, the second sealing part is formed by bending inwardly from the end face of the first sealing part, the first sealing part is sleeved on the side wall of the first joint, and the second sealing part is attached to the end face of the first joint.

[0017] As a preferred scheme of the pipeline connection structure, a gap groove is formed on the end of the sealing piece away from the first joint along the axial direction.

[0018] As a preferred scheme of the pipeline connection structure, the number of the gap grooves is at least two.

[0019] As a preferred scheme of the pipeline connection structure, the first joint comprises a first locking part and a first connecting part connected with each other, the outer diameter of the first locking part is larger than that of the first connecting part, and the sealing piece is sleeved outside the first connecting part.

[0020] As a preferred scheme of the pipeline connection structure, the second joint comprises a second locking part, a second connecting part and a pipeline connecting part connected with each other, the inner diameters of the second locking part, the second connecting part and the pipeline connecting part decrease gradually, the second locking part is threadedly connected with the first locking part, the second connecting part is sleeved outside the sealing piece, and the pipeline connecting part is used for connecting the external pipeline.

[0021] As a preferred scheme of the pipeline connection structure, the length of the second connecting part is less than twice the length of the second locking part.

[0022] According to another purpose of the present application, the present application further provides a liquid cooling system comprising a liquid cooling device and a pipeline connection structure according to any one of the above schemes, and the pipeline connection structure is connected to the liquid cooling device.

[0023] The present application has the following beneficial effects:

[0024] The pipeline connecting structure provided by the application has simple structure and convenient operation, wherein the sealing element and the second connector are in interference fit, the second connector can be sleeved along the edge of the sealing element and pressed on the sealing element during installation, so as to ensure the sealing between the second connector and the first connector, improve the sealing effect, prevent the liquid leakage, and improve the practicability.

[0025] The liquid cooling system provided by the application can avoid the liquid leakage and improve the cooling efficiency by using the pipeline connecting structure. BRIEF DESCRIPTION OF DRAWINGS

[0026] In order to more obviously and easily illustrate the embodiments of the application or the technical solutions in the prior art, the drawings needed in the following embodiment or prior art description will be briefly introduced, and the following drawings are some embodiments of the application, and other drawings can be obtained by those skilled in the art without creative labor on the basis of the drawings.

[0027] Figure 1 is a structural schematic diagram of the liquid cooling system provided by the embodiment of the application;

[0028] Figure 2 is Figure 1 a sectional view of A-A in Figure 1 ;

[0029] Figure 3 is Figure 1 a sectional view of A-A in Figure 2 ;

[0030] Figure 4 is an exploded view of the pipeline connecting structure provided by the embodiment of the application;

[0031] Figure 5 is a structural schematic diagram of the sealing element in the first view angle provided by the embodiment of the application;

[0032] Figure 6 is a structural schematic diagram of the sealing element in the second view angle provided by the embodiment of the application.

[0033] In the drawings:

[0034] 100, liquid cooling device; 200, pipeline connecting structure;

[0035] 1, first connector; 11, first locking part; 12, first connecting part;

[0036] 2, second connector; 21, second locking part; 22, second connecting part; 23, pipeline connecting part;

[0037] 3, sealing element; 31, first sealing part; 32, second sealing part; 33, gap groove;

[0038] 4, boss structure; 41, guide section; 42, sealing section. DETAILED DESCRIPTION

[0039] The application will be further described below in conjunction with the drawings and embodiments. It should be understood that the specific embodiments described herein are intended to be merely illustrative of the application and not in limitation thereof. It should also be noted that, for the purpose of description, only the parts related to the application are shown in the drawings rather than all the parts.

[0040] In the description of the application, unless otherwise explicitly specified and limited, the terms "connected", "connected", "fixed" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the internal communication of two elements or the interaction relationship between two elements. For those skilled in the art, the specific meaning of the above terms in the application can be understood according to the specific circumstances.

[0041] In the present application, unless otherwise explicitly specified and limited, the "upper" or "lower" of the first feature to the second feature can include the direct contact of the first and second features, or can include the contact of the first and second features through another feature between them. Moreover, the "upper", "upper" and "upper" of the first feature to the second feature includes the vertical and oblique above of the first feature to the second feature, or only indicates that the horizontal height of the first feature is higher than that of the second feature. The "below", "below" and "below" of the first feature to the second feature includes the vertical and oblique below of the first feature to the second feature, or only indicates that the horizontal height of the first feature is less than that of the second feature.

[0042] In the description of the present embodiment, the terms "upper", "lower", "left", "right" and other orientation or position relationship are based on the orientation or position relationship shown in the drawings, which is only for the convenience of description and simplification of operation, and does not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the application. In addition, the terms "first" and "second" are only used to distinguish in the description and have no special meaning.

[0043] Reference Figure 1 The present embodiment provides a liquid cooling system, which comprises a liquid cooling device 100 and a pipeline connection structure 200 connected to the liquid cooling device 100. It should be noted that the opposite ends of the liquid cooling device 100 are connected with the pipeline connection structure 200, one of which is used to connect the water inlet pipeline, and the other is used to connect the water outlet pipeline, and the heat is taken out of the battery pack through the flow of cooling liquid.

[0044] Specifically, as shown in Figure 4 The pipeline connection structure 200 provided by the embodiment includes a first connector 1, a second connector 2, and a sealing member 3. The first connector 1 is connected to the liquid cooling device 100. The first connector 1 and the liquid cooling device 100 can be fixedly connected or integrally formed. The second connector 2 is sleeved on the first connector 1 and is used to connect an external pipeline. The sealing member 3 is sleeved on the first connector 1 and is sealingly connected between the first connector 1 and the second connector 2. The sealing member 3 and the second connector 2 are in interference fit to prevent liquid leakage. The first connector 1 is in communication with the liquid cooling device 100, and the second connector 2 is connected to the external pipeline. The second connector 2 and the first connector 1 are both provided with a through hole at the center position in the axial direction, and the hole diameters are the same. When the second connector 2 is sleeved on the first connector 1, the two through holes are in abutment and communication to transmit the cooling liquid into the liquid cooling device 100.

[0045] Further, with reference to Figure 4 , in order to improve the sealing effect, the outer wall of the sealing member 3 is provided with a circumferentially surrounding boss structure 4. The boss structure 4 is in interference fit with the second connector 2. During installation, the second connector 2 can be sleeved on and pressed on the boss structure 4 along the edge of the boss structure 4 to ensure the sealing between the second connector 2 and the first connector 1, improve the sealing effect, prevent liquid leakage, and facilitate installation and improve practicality. The outer diameter of the boss structure 4 is greater than the outer diameter of the sealing member 3, and the length of the boss structure 4 is less than the length of the sealing member 3. This not only improves the sealing effect but also facilitates the installation of the second connector 2.

[0046] Preferably, with reference to Figure 4 , the number of boss structures 4 is multiple, and the multiple boss structures 4 are arranged in the axial direction of the sealing member 3. By adopting this arrangement, the sealing effect can be further improved. Further preferably, in the embodiment, the number of boss structures 4 is four, and the four boss structures 4 are arranged in the axial direction of the sealing member 3. Of course, the number of boss structures 4 is not limited to the above-mentioned limitation. In other embodiments, the number of boss structures 4 can be adaptively selected according to actual needs.

[0047] As a preferred scheme, the sealing member 3 and the multiple boss structures 4 are integrally formed. During processing, the assembly links between the components can be reduced, the manufacturing cost is saved, the structure is more firm and durable, the installation is more convenient and fast, and the use of the connecting member is cancelled.

[0048] Further, as shown in Figure 5As shown, the boss structure 4 includes a guide section 41 and a sealing section 42, the guide section 41 is inclined to the sleeving direction of the second joint 2, the sealing section 42 is connected to the end face of the guide section 41 close to the liquid cooling device 100, and the second joint 2 can be pressed on the sealing section 42. Among them, the axial section of the guide section 41 is triangular, which is used for guiding the installation of the second joint 2 and facilitating the installation. The axial section of the sealing section 42 is rectangular, and the sealing section 42 is in interference fit with the inner wall of the second joint 2, which is used to ensure the sealing effect.

[0049] Preferably, still referring to Figure 5 , the length of the sealing section 42 of each boss structure 4 along the sleeving direction of the second joint 2 increases in turn. Referring to Figure 5 , taking four boss structures 4 as an example, the boss structures 4 are divided into four levels, the first level is farthest from the liquid cooling device 100, and the remaining three increase in turn along the sleeving direction of the second joint 2. In order to facilitate installation, the axial section of the first level boss structure 4 is triangular, that is, the length of the sealing section 42 is zero, and only includes the guide section 41, and this boss structure 4 mainly plays a guiding role. With the increase of the level, the length of the sealing section 42 increases in turn, so the sealing effect also increases, the first two levels of boss structures 4 are mainly to facilitate installation, and the last two levels of boss structures 4 are mainly to ensure sealing.

[0050] Further, as shown in Figure 6 , in order to effectively ensure the reliability of the sealing, the sealing piece 3 includes a first sealing part 31 and a second sealing part 32, the second sealing part 32 is formed by bending inward from the end face of the first sealing part 31, the first sealing part 31 is sleeved on the side face of the first joint 1, and the above-mentioned boss structure 4 is located on the side wall of the first sealing part 31, and the second sealing part 32 is a circular ring structure and is attached to the end face of the first joint 1 away from the liquid cooling device 100, so as to increase the sealing reliability.

[0051] Preferably, still referring to Figure 6 , a gap groove 33 is formed in the end of the sealing piece 3 away from the first joint 1 along the axial direction, and the gap groove 33 penetrates the side wall of the sealing piece 3 along the thickness direction. It should be noted that since the sealing piece 3 needs to be interference fit, the installation of the sealing piece 3 and the second joint 2 is difficult. By providing the gap groove 33 at the front end of the sealing piece 3, the installation of the sealing piece 3 and the second joint 2 is facilitated. When the second joint 2 is installed, there is a deformation space at the gap groove 33 of the sealing piece 3, so that the second joint 2 can more easily press the sealing piece 3, thereby facilitating installation. Further preferably, the number of gap grooves 33 is at least two, preferably two, and the two gap grooves 33 are arranged on opposite sides of the sealing piece 3, which can more facilitate the installation of the sealing piece 3 and the second joint 2, thereby improving the installation efficiency.

[0052] Further, as shown in Figure 4As shown, the first joint 1 comprises a first locking portion 11 and a first connecting portion 12 connected in sequence, the outer diameter of the first locking portion 11 is larger than that of the first connecting portion 12, and the sealing member 3 is sleeved outside the first connecting portion 12. Adaptively, the second joint 2 comprises a second locking portion 21, a second connecting portion 22 and a pipeline connecting portion 23 connected in sequence, the inner diameters of the second locking portion 21, the second connecting portion 22 and the pipeline connecting portion 23 decrease in sequence, and the inner diameter of the second locking portion 21 is approximately equal to the outer diameter of the first locking portion 11. The second locking portion 21 is provided with an internal thread, the first locking portion 11 is provided with an external thread, and the second locking portion 21 is sleeved on the first locking portion 11 and is threadedly connected with the first locking portion 11. The second connecting portion 22 is sleeved outside the sealing member 3 and is in interference fit with the sealing member 3, and the pipeline connecting portion 23 is used for connecting an external water pipe. By adopting the stepped arrangement, the installation of the second joint 2 is more convenient.

[0053] It should be noted that, as Figure 3 shown, in order to ensure the sealing effect, the inner diameter of the first sealing portion 31 can be slightly smaller than the outer diameter of the first connecting portion 12, so as to realize the interference fit between the first sealing portion 31 and the first connecting portion 12. The inner diameter of the second sealing portion 32 is approximately equal to the inner diameter of the sealing member 3, and when assembled, the second sealing portion 32 is pressed between the end face of the first connecting portion 12 and the stepped surface of the second connecting portion 22, so as to ensure the sealing property.

[0054] Preferably, in order to facilitate the installation, the length of the second connecting portion 22 is less than twice the length of the second locking portion 21. It should be noted that when the second connecting portion 22 only enters half of the sealing member 3 (i.e. to the second stage boss structure 4), the second locking portion 21 just hits the first locking portion 11, as Figure 2 shown. Among them, the first two stages of boss structure 4 mainly play a guiding role, the second connecting portion 22 is relatively easy to install, the last two stages of boss structure 4 mainly play a key sealing role, and the second connecting portion 22 is difficult to install, and can be rotated and installed with the help of a locking tool, so that the installation is more convenient, Figure 3 a schematic view of the second joint 2 after installation.

[0055] Obviously, the above embodiments of the present application are only examples for clearly illustrating the present application, and are not intended to limit the implementation modes of the present application. Based on the above description, other different forms of changes or variations can be made by those skilled in the art. Here, it is not necessary and impossible to enumerate all the implementation modes. Any modification, equivalent replacement and improvement made within the spirit and principle of the present application shall be included in the protection scope of the claims of the present application.

Claims

1. A pipe connection structure, characterized in that, include: First connector (1); The second connector (2) is fitted onto the first connector (1); A sealing element (3) is sleeved outside the first connector (1) and connected between the first connector (1) and the second connector (2). A boss structure (4) is protruding on the outer wall of the sealing element (3) and surrounds it in the circumferential direction. The boss structure (4) is interference-fitted with the second connector (2). The number of boss structures (4) is set to be multiple. The multiple boss structures (4) are arranged at intervals along the axial direction of the sealing element (3). The boss structure (4) includes a guide section (41) and a sealing section (42) connected to each other. The guide section (41) is inclined towards the fitting direction of the second connector (2). The axial cross section of the sealing section (42) is rectangular. The second connector (2) can be pressed against the sealing section (42). The length of the sealing section (42) of each boss structure (4) increases sequentially along the fitting direction of the second connector (2).

2. The pipeline connection structure according to claim 1, characterized in that, The axial cross section of the boss structure (4) on the seal (3) that first contacts the second connector (2) is triangular.

3. The pipeline connection structure according to claim 1, characterized in that, The sealing element (3) includes a first sealing part (31) and a second sealing part (32). The second sealing part (32) is formed by bending the end face of the first sealing part (31) inward. The first sealing part (31) is sleeved on the side wall of the first connector (1), and the second sealing part (32) is attached to the end face of the first connector (1).

4. The pipeline connection structure according to claim 1, characterized in that, The sealing element (3) has a gap groove (33) axially formed at the end away from the first joint (1).

5. The pipeline connection structure according to claim 4, characterized in that, The number of the gap grooves (33) is set to at least two.

6. The pipeline connection structure according to claim 1, characterized in that, The first connector (1) includes a first locking part (11) and a first connecting part (12) connected to each other. The outer diameter of the first locking part (11) is larger than the outer diameter of the first connecting part (12). The sealing element (3) is sleeved on the outside of the first connecting part (12).

7. The pipeline connection structure according to claim 6, characterized in that, The second connector (2) includes a second locking part (21), a second connecting part (22), and a pipeline connecting part (23) connected in sequence. The inner diameters of the second locking part (21), the second connecting part (22), and the pipeline connecting part (23) decrease in sequence. The second locking part (21) is threadedly connected to the first locking part (11). The second connecting part (22) is sleeved on the outside of the seal (3). The pipeline connecting part (23) is used to connect an external pipeline.

8. The pipeline connection structure according to claim 7, characterized in that, The length of the second connecting part (22) is less than twice the length of the second locking part (21).

9. A liquid cooling system, characterized in that, It includes a liquid cooling device (100) and a pipeline connection structure (200) as described in any one of claims 1-8, the pipeline connection structure (200) being connected to the liquid cooling device (100).

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