Connector assembly, cooling system and electric equipment

Abstract

The utility model relates to the technical field of power batteries, and particularly provides a connector assembly, a cooling system and electric equipment. The connector assembly comprises a connector and a connecting pipeline, the connector comprises a base plate and a matched pipe arranged on the first side of the base plate, the connecting pipeline comprises a corrugated pipe and an inserting connector connected with the cold plate, the corrugated pipe comprises a first connecting section, a second connecting section and a corrugated section connecting the first connecting section and the second connecting section, the first connecting section is connected with the matched pipe, and the second connecting section is connected with the inserting connector. The second connecting section is connected with the plug connector, the first connecting section and the second connecting section are arranged at an obtuse angle in the horizontal projection direction, and the ratio of the outer diameter of the corrugated section to the length of the corrugated section is 0.03-1. According to the utility model, the assembly tolerance absorption capability can be improved, and the flow resistance is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of power batteries, and specifically provides a joint assembly, a cooling system and electrical equipment. Background Art

[0002] With the development of society, in order to reduce the pollution of automobile exhaust to the atmosphere, new energy vehicles such as lithium batteries have been vigorously promoted. As the power source of new energy vehicles, on-board batteries will dissipate a lot of heat when working. Usually, a set of special water cooling pipes are used in the battery pack to control the temperature of the battery. As the external requirements for the power and mileage of new energy vehicles are getting higher and higher, the volume of battery modules is also getting larger and larger, which makes the layout conditions of water cooling pipes higher. The traditional quick-connect connector is connected to the water quick-change assembly. It is necessary to connect the quick-connect connector to the water quick-change assembly first, and then connect the water cooling pipe to the quick-connect connector. Not only is the assembly and inspection time long, but there is also a risk of liquid leakage. The space at the installation of the water quick-change assembly and the liquid cooling plate is small, and the quick-connect connector occupies a certain volume, resulting in a short size of the bellows, which is not conducive to absorbing the assembly tolerance, and is not conducive to the setting of the water cooling pipe and the installation of the water quick-change assembly. In addition, the short size of the bellows is likely to cause the water cooling pipe to bend more and more, which increases the flow resistance of the liquid passing through the water cooling pipe, and the overall cooling effect is not good.

[0003] Therefore, this field needs a new technical solution to solve the above problems. Utility Model Content

[0004] The utility model aims to solve the above technical problems and provides a novel joint component which can improve the ability to absorb assembly tolerance and reduce flow resistance.

[0005] The utility model provides a joint assembly, comprising:

[0006] A connector, the connector comprising a substrate and a pipe disposed on a first side of the substrate;

[0007] A connecting pipeline, the connecting pipeline comprising a bellows and a plug connector connected to the cold plate, the bellows comprising a first connecting section, a second connecting section and a corrugated section connecting the first connecting section and the second connecting section;

[0008] Among them, the first connecting section is connected to the piping, the second connecting section is connected to the plug-in joint, the first connecting section and the second connecting section are arranged at an obtuse angle in the horizontal projection direction, and the ratio of the outer diameter of the corrugated section to the length of the corrugated section is 0.03 to 1.

[0009] In the case of adopting the above technical solution, the first connection section of the utility model is connected to the piping, and the second connection section is connected to the plug-in connector. The liquid in the connector enters the second connection section through the first connection section, or the liquid in the cold plate enters the first connection section through the second connection section. The setting of the obtuse angle can maximize the reduction of flow resistance, thereby improving the heat exchange efficiency. The ratio between the outer diameter of the corrugated section and the length of the corrugated section, if the outer diameter of the corrugated section is too small, the flow area of ​​the liquid passing through the corrugated section is small, and the flow resistance will be too large. If the length of the corrugated section is too long, the path of the liquid passing through the corrugated section is long, and the flow resistance will also be too large. The ratio of the outer diameter of the corrugated section to the length of the corrugated section is in the range of 0.03 to 1. While the ratio of the outer diameter of the corrugated section to the length of the corrugated section meets the performance of the battery pack, the flow resistance of the liquid flowing through the connector assembly can be reduced, and the installation requirements of different box sizes and different pipeline diameters can be met. It has strong adaptability and is conducive to cost saving.

[0010] In a preferred technical solution of the above-mentioned joint assembly, the length of the corrugated section is greater than the length of the first connecting section and / or the length of the second connecting section, and the ratio of the length of the corrugated section to the length of the bellows is 0.4 to 0.6.

[0011] When the above technical solution is adopted, the length of the corrugated section is greater than the length of the first connecting section and / or the length of the second connecting section. This makes the length of the corrugated section longer, which not only can achieve good bending and a larger bending angle, but also improves the ability to absorb tolerances during assembly. The length of the corrugated section accounts for a large proportion of the length of the bellows. This means that except for the first connecting section and the second connecting section that cooperate with the piping and the plug-in joint, the other parts of the bellows are all bendable corrugated sections, which can achieve better bending, thereby further improving the ability of the bellows to absorb tolerances during assembly.

[0012] In a preferred technical solution of the above connector assembly, the connector further comprises a plug-in tube provided on the second side of the base plate for plugging with the vehicle-end connector.

[0013] When the above technical solution is adopted, the piping and the plug-in tube are respectively arranged on the first side and the second side of the substrate, which can not only save the horizontal space occupied by the joint assembly, but also reduce the flow resistance of the liquid passing through the joint assembly, thereby improving the heat dissipation effect and heat exchange efficiency.

[0014] In a preferred technical solution of the above-mentioned joint assembly, the number of the plug-in tubes is two and the number of the pipes is two, the two pipes extend in a direction away from the substrate, and the extension direction of the plug-in tube is perpendicular to the extension direction of the pipes.

[0015] When the above technical solution is adopted, the plug-in tube is one-in and one-out, the piping is also one-in and one-out, the plug-in tube at the liquid inlet end corresponds to and is connected with the piping, and the plug-in tube at the liquid outlet end corresponds to and is connected with the piping. The two pipings at the liquid inlet end and the liquid outlet end extend in a direction away from the substrate, which is convenient for the collection and dispersion of the liquid, and when the liquid flows, the stability and balance of the joint can be maintained. The extension direction of the plug-in tube is perpendicular to the extension direction of the piping, which can make good use of the height direction space of the battery pack and save the horizontal direction space of the battery pack, thereby improving space utilization and thereby improving the overall energy density of the battery pack.

[0016] In a preferred technical solution of the above joint assembly, the piping and the plug-in tube are located on opposite sides of the substrate in the vertical direction, and the piping is located on opposite sides of the substrate in the horizontal direction.

[0017] When adopting the above technical solution, the piping and the plug-in tube are arranged in the vertical direction, and the two piping are arranged in the horizontal direction, which can not only reduce the flow resistance of the liquid passing through the joint assembly and improve the heat dissipation effect and heat exchange efficiency, but also make full use of the height direction space of the battery pack, thereby saving the horizontal direction space of the battery pack, thereby improving the overall space utilization and improving the energy density of the battery pack.

[0018] In the preferred technical solution of the above-mentioned joint assembly, the corrugated segment includes a first corrugated segment, a second corrugated segment and a bending segment, the bending segment connects the first corrugated segment and the second corrugated segment, the first corrugated segment is connected to the first connecting segment, and the second corrugated segment is connected to the second connecting segment.

[0019] When the above technical solution is adopted, when the corrugated tube is bent, the first connecting section and the second connecting section remain unchanged, the corrugated section is bent, and the first corrugated section is connected to the first connecting section to achieve a slight bending, and the second corrugated section is connected to the second connecting section to achieve a slight bending. The bending angle of the bending section in the horizontal direction and / or the vertical direction is large. With this arrangement, there will be no incomplete bending, thereby ensuring the reliability of the connection between the first corrugated section and the first connecting section, and the second corrugated section and the second connecting section.

[0020] In a preferred technical solution of the above-mentioned joint assembly, the first corrugated segment and the second corrugated segment are arranged at an obtuse angle in the horizontal projection direction.

[0021] When adopting the above technical solution, the first corrugated section is connected to the first connecting section, and the second corrugated section is connected to the second connecting section. The first connecting section is connected to the piping, and the second connecting section is connected to the plug-in connector. As a path for the circulation of cooling liquid, the first corrugated section and the second corrugated section are arranged at an obtuse angle in the horizontal projection direction, which can reduce flow resistance and thereby improve heat exchange efficiency.

[0022] In the preferred technical solution of the above-mentioned joint assembly, along the extension direction perpendicular to the pipe, the projection angles of the first corrugated section and the bent section in the vertical direction are set at an obtuse angle, and the projection angles of the second corrugated section and the bent section in the vertical direction are set at an obtuse angle.

[0023] When adopting the above technical solution, the first corrugated section is connected to the first connecting section, the second corrugated section is connected to the second connecting section, the first connecting section is connected to the piping, and the second connecting section is connected to the plug-in joint. The piping and the plug-in joint have a height difference in the vertical direction, and the obtuse angle setting can not only reduce the flow resistance and improve the heat exchange efficiency, but also save costs.

[0024] In a second aspect, the utility model provides a cooling system, comprising the joint assembly described in the first aspect.

[0025] In a third aspect, the utility model provides an electrical device, comprising the cooling system described in the second aspect. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] The preferred embodiments of the present invention are described below in conjunction with the accompanying drawings, in which:

[0027] Figure 1 It is a structural schematic diagram of the joint assembly of the utility model being installed on a box body;

[0028] Figure 2 It is a top view of the connector assembly of the utility model installed on the box body;

[0029] Figure 3 It is a top view of the joint assembly of the utility model;

[0030] Reference numerals:

[0031] 1. Box body; 11. Receiving cavity; 12. Mounting hole;

[0032] 2. Connector; 20. Base plate; 21. Plug-in tube; 22. Connecting part; 23. Pipe;

[0033] 3. Bellows; 31. First connecting section; 32. Bellows section; 321. First bellows section; 322. Bend section; 323. Second bellows section; 33. Second connecting section;

[0034] 4. Plug connector;

[0035] D, outer diameter of the corrugated section; L, length of the corrugated section. DETAILED DESCRIPTION

[0036] The preferred embodiments of the present invention are described below with reference to the accompanying drawings. It should be understood by those skilled in the art that these embodiments are only used to explain the technical principles of the present invention and are not intended to limit the protection scope of the present invention.

[0037] It should be noted that in the description of the present invention, the terms "upper", "lower", "left", "right", "front", "back", "inner", "outer" and the like indicating directions or positional relationships are based on the directions or positional relationships shown in the drawings, which are only for the convenience of description, and do not indicate or imply that the device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0038] In addition, it should be noted that in the description of the present invention, unless otherwise clearly specified and limited, the terms "connection", "setting" and "installation" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, a direct connection, or an indirect connection through an intermediate medium. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0039] like Figures 1 to 3 As shown, in the first aspect, the joint assembly of the utility model includes a joint 2 and a connecting pipeline, the joint 2 includes a base plate 20 and a pipe 23 arranged on the first side of the base plate 20, the connecting pipeline includes a bellows 3 and a plug-in joint 4 connected to the cold plate, the bellows 3 includes a first connecting section 31, a second connecting section 33 and a corrugated section 32 connecting the first connecting section 31 and the second connecting section 33, the first connecting section 31 is connected to the pipe 23, the second connecting section 33 is connected to the plug-in joint 4, the first connecting section 31 and the second connecting section 33 are arranged at an obtuse angle in the horizontal projection direction, and the ratio of the outer diameter D of the corrugated section to the length L of the corrugated section is 0.03 to 1.

[0040] The first connection section 31 of the utility model is connected to the pipe 23, and the second connection section 33 is connected to the plug-in connector 4. The liquid in the connector 2 enters the second connection section 33 through the first connection section 31, or the liquid in the cold plate enters the first connection section 31 through the second connection section 33. The setting of the obtuse angle can maximize the reduction of flow resistance, thereby improving the heat exchange efficiency. The relationship between the outer diameter D of the corrugated section and the length L of the corrugated section is that if the outer diameter D of the corrugated section is too small, the flow area of ​​the liquid passing through the corrugated section 32 is small, and the flow resistance will be too large. If the length L of the corrugated section is too long, the path of the liquid passing through the corrugated section 32 is long, and the flow resistance will also be too large. The outer diameter D of the corrugated section and the length L of the corrugated section are in the range of 0.03 to 1. While the ratio of the outer diameter D of the corrugated section and the length L of the corrugated section meets the performance of the battery pack, the flow resistance of the liquid flowing through the connector assembly can be reduced, and the installation requirements of different box sizes and different pipeline diameters can be met. It has strong adaptability and is conducive to cost saving.

[0041] The values ​​of the outer diameter D of the corrugation section and the length L of the corrugation section are as follows in this embodiment: the minimum outer diameter D of the corrugation section is 4 mm, and the maximum outer diameter D of the corrugation section is 20 mm. The battery pack case 1 has bolt holes for mounting to the vehicle by bolts, and the joint assembly has two bolt holes on one side for mounting. The joint assembly is arranged between the two bolt holes. The two bolt holes limit the boundary of the receiving cavity 11 for accommodating the joint assembly, so that the maximum position of the mounting hole 12 can reach the bolt hole. In this embodiment, the length L of the corrugation section is preferably 112 mm. The minimum length L of the corrugation section is 20 mm, that is, the corrugation section 32 has 5 peaks, which can meet the tolerance requirements during installation. In this embodiment, the ratio of the outer diameter D of the corrugated section to the length L of the corrugated section is preferably 0.03, 0.05, 0.08, 0.1, 0.15, 0.18, 0.2, 0.25, 0.3, 0.35, 0.4, 0.45, 0.5, 0.55, 0.6, 0.65, 0.7, 0.75, 0.8, 0.85, 0.9, 0.95, and 1.

[0042] like Figure 2 As shown, the length of the corrugated section 32 is greater than the length of the first connecting section 31 and / or the length of the second connecting section 33, so that the length of the corrugated section 32 is longer, which not only can achieve good bending and a larger bending angle, but also improves the ability to absorb tolerance during assembly.

[0043] The length of the corrugated section 32 accounts for a proportion of the length of the bellows 3 of 0.4 to 0.6. In the present embodiment, the length of the corrugated section 32 accounts for a proportion of the length of the bellows 3 of 0.54. Of course, it can also be 0.4, 0.41, 0.42, 0.43, 0.44, 0.45, 0.46, 0.47, 0.48, 0.49, 0.5, 0.51, 0.52, 0.53, 0.54, 0.55, 0.56, 0.57, 0.58, 0.59, 0.6. The length of the corrugated section 32 accounts for a large proportion of the length of the bellows 3. This means that except for the first connecting section 31 and the second connecting section 33 that cooperate with the piping 23 and the plug-in connector 4, the other parts of the bellows 3 are all bendable corrugated sections 32, which can achieve better bending, thereby further improving the ability of the bellows 3 to absorb tolerances during assembly.

[0044] like Figure 1 As shown, the connector assembly is installed in the receiving cavity 11 of the box body 1, and the receiving cavity 11 is located on the opposite side of the box body 1. The receiving cavity 11 is provided with a mounting hole 12 near the battery module, and the cold plate interface or plug connector of the liquid cold plate is provided in the mounting hole 12, so that the connector assembly is connected to the liquid cold plate. Figure 3 As shown, the piping 23 is arranged on the first side of the substrate 20, and the connector 2 also includes a plug-in tube 21 arranged on the second side of the substrate 20 to be plugged into the vehicle-end connector. A connecting portion 22 connecting the piping 23 to the substrate 20 is provided between the piping 23 and the substrate 20. The first interface of the connecting portion 22 is communicated with the plug-in tube 21, and the second interface is communicated with the piping 23. There is a bending angle between the first interface and the second interface of the connecting portion 22, which is preferably 90° in this embodiment, which is convenient for the installation of the piping 23, can also save space, and can reduce the flow resistance of the piping 23. The piping 23 and the plug-in tube 21 are respectively arranged on the first side and the second side of the substrate 20, which can not only save the horizontal space occupied by the connector assembly, but also reduce the flow resistance of the liquid passing through the connector assembly, and improve the heat dissipation effect and heat exchange efficiency. The connector in this embodiment is preferably a package-end water quick-change connector, and the vehicle-end connector is preferably a vehicle-end water quick-change connector that cooperates with the package-end water quick-change connector.

[0045] like Figure 1 and Figure 3As shown, there are two plug-in tubes 21 and two pipes 23, the two pipes 23 extend in a direction away from the substrate 20, and the extension direction of the plug-in tube 21 is perpendicular to the extension direction of the pipes 23. The plug-in tube 21 is one-in and one-out, and the pipes 23 are also one-in and one-out. The plug-in tube 21 at the liquid inlet end corresponds to and is connected with the pipes 23, and the plug-in tube 21 at the liquid outlet end corresponds to and is connected with the pipes 23. The two pipes 23 at the liquid inlet end and the liquid outlet end extend in a direction away from the substrate 20, which is convenient for the collection and dispersion of the liquid, and when the liquid flows, the stability and balance of the joint 2 can be maintained. The extension direction of the plug-in tube 21 is perpendicular to the extension direction of the pipes, which can make good use of the height direction space of the battery pack and save the horizontal direction space of the battery pack, improve the space utilization rate, and thus improve the overall energy density of the battery pack.

[0046] like Figure 3 As shown, the pipe 23 and the plug-in tube 21 are located on opposite sides of the substrate 20 in the vertical direction, and the pipe 23 is located on opposite sides of the substrate 20 in the horizontal direction. The pipe 23 and the plug-in tube 21 are arranged in the vertical direction, and the two pipes 23 are arranged in the horizontal direction, which can not only reduce the flow resistance of the liquid passing through the joint assembly, improve the heat dissipation effect and heat exchange efficiency, but also make full use of the height direction space of the battery pack, thereby saving the horizontal direction space of the battery pack, thereby improving the overall space utilization and the energy density of the battery pack.

[0047] like Figure 2 and Figure 3 As shown, the corrugated section 32 includes a first corrugated section 321, a second corrugated section 323 and a bending section 322. The bending section 322 connects the first corrugated section 321 and the second corrugated section 323. The first corrugated section 321 is connected to the first connecting section 31, and the second corrugated section 323 is connected to the second connecting section 33. When the bellows 3 is bent, the first connecting section 31 and the second connecting section 33 remain unchanged, and the corrugated section 32 is bent. The first corrugated section 321 is connected to the first connecting section 31 to achieve a slight bending, and the second corrugated section 323 is connected to the second connecting section 33 to achieve a slight bending. The bending angle of the bending section 322 in the horizontal direction and / or vertical direction is large. With this arrangement, there will be no incomplete bending, thereby ensuring the reliability of the connection between the first corrugated section 321 and the first connecting section 31, and the second corrugated section 323 and the second connecting section 33.

[0048] like Figure 3As shown, the first corrugated section 321 and the second corrugated section 323 are arranged at an obtuse angle in the horizontal projection direction, the first corrugated section 321 is connected to the first connecting section 31, and the second corrugated section 323 is connected to the second connecting section 33, while the first connecting section 31 is connected to the piping 23, and the second connecting section 33 is connected to the plug-in connector 4. As a path for the circulation of cooling liquid, the first corrugated section 321 and the second corrugated section 323 are arranged at an obtuse angle in the horizontal projection direction, which can reduce flow resistance and thereby improve heat exchange efficiency.

[0049] Along the extending direction perpendicular to the pipe 23, the projection angle of the first corrugated section 321 and the bent section 322 in the vertical direction is set at an obtuse angle, and the projection angle of the second corrugated section 323 and the bent section 322 in the vertical direction is set at an obtuse angle. The first corrugated section 321 is connected to the first connecting section 31, and the second corrugated section 323 is connected to the second connecting section 33. The first connecting section 31 is connected to the pipe 23, and the second connecting section 33 is connected to the plug connector 4. The pipe 23 and the plug connector 4 have a height difference in the vertical direction. The obtuse angle setting can not only reduce the flow resistance and improve the heat exchange efficiency, but also save costs.

[0050] In the second aspect, the cooling system of the utility model includes the joint assembly of the first aspect. The cooling system of this technical solution includes the joint assembly of any technical solution of the utility model, and thus has all the technical effects of the joint assembly of any technical solution of the utility model.

[0051] In the third aspect, the electrical equipment of the utility model includes the cooling system of the second aspect. The electrical equipment of this technical solution includes the cooling system of any technical solution of the utility model, and thus has all the technical effects of the cooling system of any technical solution of the utility model.

[0052] It should be noted that the above preferred implementations are only used to illustrate the principle of the utility model and are not intended to limit the protection scope of the utility model. Without departing from the principle of the utility model, those skilled in the art may adjust the above settings so that the utility model can be applied to more specific application scenarios.

[0053] Of course, the above-mentioned replaceable implementations, as well as the replaceable implementations and the preferred implementations, can be used in a cross-coordinated manner to combine new implementations to suit more specific application scenarios.

[0054] So far, the technical solution of the present invention has been described in conjunction with the preferred embodiments shown in the accompanying drawings. However, it is easy for those skilled in the art to understand that the protection scope of the present invention is obviously not limited to these specific embodiments. Without departing from the principle of the present invention, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions after these changes or substitutions will fall within the protection scope of the present invention.

Claims

1. A joint assembly, characterized in that: include: A connector, the connector comprising a substrate and a pipe disposed on a first side of the substrate; A connecting pipeline, the connecting pipeline comprising a bellows and a plug connector connected to the cold plate, the bellows comprising a first connecting section, a second connecting section and a corrugated section connecting the first connecting section and the second connecting section; Among them, the first connecting section is connected to the piping, the second connecting section is connected to the plug-in joint, the first connecting section and the second connecting section are arranged at an obtuse angle in the horizontal projection direction, and the ratio of the outer diameter of the corrugated section to the length of the corrugated section is 0.03 to 1.

2. The joint assembly according to claim 1, characterized in that: The length of the corrugated section is greater than the length of the first connecting section and / or the length of the second connecting section, and the ratio of the length of the corrugated section to the length of the bellows is 0.4 to 0.

6.

3. The joint assembly according to claim 1, characterized in that: The connector further comprises a plug-in tube which is arranged on the second side of the base plate and is plugged with the vehicle end connector.

4. The joint assembly according to claim 3, characterized in that: The number of the plugging tubes is two and the number of the pipes is two, the two pipes extend in a direction away from the substrate, and the extending direction of the plugging tube is perpendicular to the extending direction of the pipes.

5. The joint assembly according to claim 3, characterized in that: The pipe and the plug-in pipe are located on two opposite sides of the base plate in a vertical direction, and the pipe is located on two opposite sides of the base plate in a horizontal direction.

6. The joint assembly according to claim 1, characterized in that: The corrugated segment includes a first corrugated segment, a second corrugated segment and a bending segment, the bending segment connects the first corrugated segment and the second corrugated segment, the first corrugated segment is connected to the first connecting segment, and the second corrugated segment is connected to the second connecting segment.

7. The joint assembly according to claim 6, characterized in that: The first corrugated segment and the second corrugated segment are arranged at an obtuse angle in a horizontal projection direction.

8. The joint assembly according to claim 6, characterized in that: Along the extending direction perpendicular to the pipe, the projection angle between the first corrugated section and the bent section in the vertical direction is set at an obtuse angle, and the projection angle between the second corrugated section and the bent section in the vertical direction is set at an obtuse angle.

9. A cooling system, characterized in that: Comprising a joint assembly as described in any one of claims 1-8.

10. An electrical device, characterized in that: Comprising the cooling system of claim 9.

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