Cooling pipe assembly and battery pack

Abstract

The utility model discloses a cooling pipe assembly and a battery pack, the cooling pipe assembly is used for a battery module, the cooling pipe assembly comprises a first cooling pipe assembly, the first cooling pipe assembly is positioned on one side of the battery module along a first direction, the first cooling pipe assembly comprises a first cooling pipe and a second cooling pipe which are arranged in a second direction, the first cooling pipe and the second cooling pipe are each provided with an inlet and an outlet, the inlet of the first cooling pipe is connected with the inlet of the second cooling pipe through a first connector water nozzle, the outlet of the first cooling pipe is connected with the outlet of the second cooling pipe through a second connector water nozzle, and the first direction is perpendicular to the second direction. The liquid inlet pipe is connected with the first joint water nozzle; and the liquid outlet pipe is connected with the second joint water nozzle. According to the cooling pipe assembly disclosed by the utility model, the cooling of the battery module by the cooling pipe assembly is realized, and the quantity of required manufacturing materials is small, so that the manufacturing cost is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of battery packs, and in particular to a cooling tube assembly and a battery pack. Background Art

[0002] Existing battery packs are used for energy storage. When the battery module is high, in order to prevent excessive temperature difference between the upper and lower ends of the battery module, both the upper and lower ends of the battery module need to be cooled. However, most of the existing upper and lower cooling solutions are cold liquid plate structures, which are relatively costly. Utility Model Content

[0003] The utility model aims to solve at least one of the technical problems existing in the prior art. To this end, the utility model provides a cooling pipe assembly, which requires less manufacturing material, thereby reducing the manufacturing cost.

[0004] The utility model also provides a battery pack, comprising the cooling tube assembly mentioned above.

[0005] A cooling pipe assembly according to an embodiment of the utility model is used for a battery module and includes: a first cooling pipe assembly, the first cooling pipe assembly is located on one side of the battery module along a first direction, the first cooling pipe assembly includes a first cooling pipe and a second cooling pipe arranged in a second direction, the first cooling pipe and the second cooling pipe both have an inlet and an outlet, the inlet of the first cooling pipe is connected to the inlet of the second cooling pipe through a first joint water nozzle, the outlet of the first cooling pipe is connected to the outlet of the second cooling pipe through a second joint water nozzle, and the first direction and the second direction are perpendicular to each other; a liquid inlet pipe, the liquid inlet pipe is connected to the first joint water nozzle; a liquid outlet pipe, the liquid outlet pipe is connected to the second joint water nozzle.

[0006] According to the cooling pipe assembly of the embodiment of the utility model, the inlet of the first cooling pipe is connected to the inlet of the second cooling pipe through the first joint nozzle, the outlet of the first cooling pipe is connected to the outlet of the second cooling pipe through the second joint nozzle, the first direction and the second direction are perpendicular to each other; the liquid inlet pipe is connected to the first joint nozzle; the liquid outlet pipe is connected to the second joint nozzle. Thus, the cooling pipe assembly can cool the battery module, and the amount of manufacturing materials required is small, thereby reducing the manufacturing cost.

[0007] In some embodiments of the utility model, the liquid outlet pipe is spaced apart from the liquid inlet pipe in the second direction, the liquid outlet pipe and the liquid inlet pipe extend along the third direction, the first joint water nozzle and the second joint water nozzle are spaced apart from each other in the second direction, in the first direction, the first joint water nozzle is arranged opposite to the liquid inlet pipe, the second joint water nozzle is arranged opposite to the liquid outlet pipe, and the first direction, the second direction and the third direction are perpendicular to each other.

[0008] In some embodiments of the present invention, the cooling pipe assembly also includes: a second cold pipe assembly, along the first direction, the second cold pipe assembly is arranged on the side of the battery module away from the first cold pipe assembly, the second cold pipe assembly includes a third cold pipe and a fourth cold pipe arranged in the second direction, the third cold pipe and the fourth cold pipe both have an inlet and an outlet, the inlet of the third cold pipe is connected to the inlet of the fourth cold pipe through a third joint water nozzle, the outlet of the third cold pipe is connected to the outlet of the fourth cold pipe through a fourth joint water nozzle, the third joint water nozzle is connected to the liquid inlet pipe, and the fourth joint water nozzle is connected to the liquid outlet pipe.

[0009] In some embodiments of the utility model, the third joint water nozzle and the fourth joint water nozzle are spaced apart in the second direction, and in the first direction, the third joint water nozzle is arranged opposite to the liquid inlet pipe, and the fourth joint water nozzle is arranged opposite to the liquid outlet pipe.

[0010] In some embodiments of the present invention, the first cold tube can coincide with the projection of the third cold tube perpendicular to the first direction after rotating 180° around the axis extending along the second direction, the first cold tube can coincide with the projection of the second cold tube perpendicular to the first direction after rotating 180° around the axis extending along the first direction, the second cold tube can coincide with the projection of the fourth cold tube perpendicular to the first direction after rotating 180° around the axis extending along the second direction, and the third cold tube can coincide with the projection of the fourth cold tube perpendicular to the first direction after rotating 180° around the axis extending along the first direction.

[0011] In some embodiments of the present invention, the battery module includes a first row of sub-modules and a second row of sub-modules spaced apart along the second direction, the first row of sub-modules and the second row of sub-modules each including a plurality of sub-modules arranged along the third direction, along the second direction, the liquid inlet pipe and the liquid outlet pipe are located between the first row of sub-modules and the second row of sub-modules, each of the sub-modules of the first row of sub-modules is provided with at least one first cold pipe and at least one third cold pipe at both ends along the first direction, and each of the sub-modules of the second row of sub-modules is provided with at least one second cold pipe and at least one fourth cold pipe at both ends along the first direction.

[0012] In some embodiments of the utility model, the liquid inlet pipe and the liquid outlet pipe are arranged at one end of the battery module close to the first cooling pipe assembly along the first direction, and the cooling pipe assembly also includes: a first transfer tube, one end of the first transfer tube is connected to the liquid inlet pipe, and the other end is connected to the third joint water nozzle; a second transfer tube, one end of the second transfer tube is connected to the liquid outlet pipe, and the other end is connected to the fourth joint water nozzle.

[0013] In some embodiments of the present invention, the first joint faucet and the second joint faucet are respectively arranged at the two ends of the first cold pipe assembly along the third direction, the third joint faucet and the fourth joint faucet are respectively arranged at the two ends of the second cold pipe assembly along the third direction, the second joint faucet and the third joint faucet are located at the same end of the two ends of the first cold pipe assembly along the third direction, and the first joint faucet and the fourth joint faucet are arranged at the same end of the two ends of the first cold pipe assembly along the third direction.

[0014] In some embodiments of the present invention, at least one of the first cold pipe, the second cold pipe, the third cold pipe and the fourth cold pipe extends in a winding manner in the third direction.

[0015] A battery pack according to an embodiment of the utility model includes the above-mentioned cooling tube assembly.

[0016] According to the battery pack of the embodiment of the utility model, by setting the above cooling pipe assembly, the inlet of the first cooling pipe is connected with the inlet of the second cooling pipe through the first joint nozzle, the outlet of the first cooling pipe is connected with the outlet of the second cooling pipe through the second joint nozzle, the first direction and the second direction are perpendicular to each other; the liquid inlet pipe is connected with the first joint nozzle; the liquid outlet pipe is connected with the second joint nozzle. Thus, the cooling pipe assembly cools the battery module, and the amount of manufacturing materials required is small, thereby reducing the manufacturing cost.

[0017] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0019] Figure 1 is a three-dimensional diagram of a partial structure of a battery pack according to an embodiment of the utility model;

[0020] Figure 2 is another three-dimensional diagram of a partial structure of a battery pack according to an embodiment of the utility model;

[0021] Figure 3 is a stereoscopic diagram of a cooling pipe assembly according to an embodiment of the utility model;

[0022] Figure 4 is a top view of a first cooling tube assembly of a cooling tube assembly according to an embodiment of the utility model;

[0023] Figure 5is a top view of a first cooling tube of a first cooling tube assembly of a cooling tube assembly according to an embodiment of the utility model;

[0024] Figure 6 is a side view of a sub-module of a battery module of a battery pack according to an embodiment of the utility model;

[0025] Figure 7 It is a stereoscopic view of a first joint water nozzle of a first cooling pipe assembly of a cooling pipe assembly according to an embodiment of the utility model;

[0026] Figure 8 yes Figure 3 Enlarged view of point D in the middle.

[0027] Reference numerals:

[0028] 100. Battery pack;

[0029] 10. Cooling pipe assembly;

[0030] 1. First cooling pipe assembly; 11. First cooling pipe; 12. Second cooling pipe; 13. First joint faucet; 131. First port; 132. Second port; 14. Second joint faucet; 15. Inlet; 16. Outlet;

[0031] 2. Second cooling pipe assembly; 21. Third cooling pipe; 22. Fourth cooling pipe; 23. Third joint faucet; 24. Fourth joint faucet;

[0032] 3. Liquid inlet pipe;

[0033] 4. Liquid outlet pipe;

[0034] 5. The first transfer pipe;

[0035] 6. Second transfer pipe;

[0036] 20. battery module; 201. submodule;

[0037] 30. Longitudinal beam. DETAILED DESCRIPTION

[0038] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0039] In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model. In addition, features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, unless otherwise specified, "multiple" means two or more.

[0040] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" 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 or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0041] Reference below Figure 1-Figure 7 A cooling tube assembly 10 according to an embodiment of the present invention is described.

[0042] like Figure 1-Figure 3 and Figure 8 As shown, the cooling pipe assembly 10 according to an embodiment of the utility model is used for a battery module 20, and includes a first cooling pipe assembly 1, a liquid inlet pipe 3 and a liquid outlet pipe 4.

[0043] Specifically, refer to Figure 1 and Figure 2 The first cooling pipe assembly 1 is located in the battery module 20 along the first direction (such as Figure 1 side of the direction a shown in FIG. Figure 4 and Figure 5 As shown, the first cold pipe assembly 1 includes a Figure 1The first cold tube 11 and the second cold tube 12 are arranged in the direction b as shown in the figure. The first cold tube 11 and the second cold tube 12 both have an inlet 15 and an outlet 16. The inlet 15 of the first cold tube 11 is connected to the inlet 15 of the second cold tube 12 through a first joint water nozzle 13, and the outlet 16 of the first cold tube 11 is connected to the outlet 16 of the second cold tube 12 through a second joint water nozzle 14. The first direction and the second direction are perpendicular to each other; the liquid inlet pipe 3 is connected to the first joint water nozzle 13; the liquid outlet pipe 4 is connected to the second joint water nozzle 14.

[0044] It can be understood that the first cold pipe 11 and the second cold pipe 12 are arranged in parallel, and the refrigerant enters the first cold pipe 11 and the second cold pipe 12 at the same time from the liquid inlet pipe 3 through the first joint water nozzle 13, and exchanges heat with the battery module 20 along the way, thereby realizing heating and cooling of the battery module 20, and is gathered to flow to the liquid outlet pipe 4 through the second joint water nozzle 14, thereby realizing the circulation of the refrigerant. Among them, since the first cold pipe 11 and the second cold pipe 12 are arranged in the second direction, the heat exchange efficiency of the battery module 20 in the second direction is improved, and the heating and cooling effects are improved, so that the battery module 20 can work normally.

[0045] The battery module 20 is cooled by a combination of the first cold pipe 11 and the second cold pipe 12. Compared with cooling the battery module with a cold liquid plate, the cold liquid plate needs to completely cover one end of the battery module along the first direction, and a large amount of manufacturing materials are required. The first cold pipe 11 and the second cold pipe 12 do not need to completely cover one end of the battery module 20 along the first direction, and a small amount of manufacturing materials are required, thereby reducing manufacturing costs.

[0046] Among them, Figure 7 As shown, the first joint water nozzle 13 has a first port 131 and two second ports 132, and the first port 131 and the two second ports 132 are connected. The first port 131 of the first joint water nozzle 13 is connected to the liquid inlet pipe 3, and the two second ports 132 of the first joint water nozzle 13 are respectively connected to the inlets 15 of the first cold pipe 11 and the second cold pipe 12, thereby realizing that the first joint water nozzle 13 connects the liquid inlet pipe 3 with the inlets 15 of the first cold pipe 11 and the second cold pipe 12, so that the refrigerant in the liquid inlet pipe 3 can be diverted through the first joint water nozzle 13 and enter the first cold pipe 11 and the second cold pipe 12.

[0047] At the same time, the second joint water nozzle 14 also has a first port 131 and two second ports 132. The first port 131 of the second joint water nozzle 14 is connected to the liquid inlet pipe 3, and the two second ports 132 of the first joint water nozzle 13 are respectively connected to the outlets 16 of the first cold pipe 11 and the second cold pipe 12, thereby realizing that the second joint water nozzle 14 connects the liquid inlet pipe 3 with the outlets 16 of the first cold pipe 11 and the second cold pipe 12, so that the liquid in the first cold pipe 11 and the second cold pipe 12 can be collected through the second joint water nozzle 14 and flow to the liquid outlet pipe 4.

[0048] In addition, the second joint water nozzle 14 has the same structure as the first joint water nozzle 13 , that is, the second joint water nozzle 14 and the first joint water nozzle 13 can be manufactured by the same mold, thereby reducing the number of molds and reducing the cost of the cooling pipe assembly 10 .

[0049] Furthermore, if Figure 4 and Figure 5 As shown, the cross-sectional profiles of the first cooling tube 11 and the second cooling tube 12 are rectangular, but the present invention is not limited thereto, and the cross-sectional profiles of the first cooling tube 11 and the second cooling tube 12 may also be other shapes such as circular or elliptical.

[0050] According to the cooling pipe assembly 10 of the embodiment of the utility model, the inlet 15 of the first cooling pipe 11 is connected to the inlet 15 of the second cooling pipe 12 through the first joint nozzle 13, and the outlet 16 of the first cooling pipe 11 is connected to the outlet 16 of the second cooling pipe 12 through the second joint nozzle 14, and the first direction and the second direction are perpendicular to each other; the liquid inlet pipe 3 is connected to the first joint nozzle 13; and the liquid outlet pipe 4 is connected to the second joint nozzle 14. Thus, the cooling pipe assembly 10 cools the battery module 20, and the amount of manufacturing materials required is small, thereby reducing the manufacturing cost.

[0051] In some embodiments of the present invention, Figure 3 , Figure 4 and Figure 8 As shown, the liquid outlet pipe 4 is spaced apart from the liquid inlet pipe 3 in the second direction, and the liquid outlet pipe 4 and the liquid inlet pipe 3 are spaced apart in the third direction (eg Figure 1 c direction as shown, thereby avoiding installation interference between the liquid outlet pipe 4 and the liquid inlet pipe 3.

[0052] Furthermore, if Figure 3 , Figure 4 and Figure 8 As shown, the first joint water nozzle 13 and the second joint water nozzle 14 are spaced apart in the second direction. In the first direction, the first joint water nozzle 13 is arranged opposite to the liquid inlet pipe 3, and the second joint water nozzle 14 is arranged opposite to the liquid outlet pipe 4. The first direction, the second direction and the third direction are perpendicular to each other.

[0053] It can be understood that in the first direction, the first joint water nozzle 13 is arranged opposite to the liquid inlet pipe 3, and the second joint water nozzle 14 is arranged opposite to the liquid outlet pipe 4, thereby optimizing the arrangement and layout between the first joint water nozzle 13, the second joint water nozzle 14, the liquid inlet pipe 3 and the liquid outlet pipe 4, which can facilitate the connection between the first joint water nozzle 13 and the liquid inlet pipe 3, and also facilitate the connection between the second joint water nozzle 14 and the liquid outlet pipe 4, thereby improving the assembly efficiency.

[0054] In some embodiments of the present invention, Figure 1, Figure 3 and Figure 8 As shown, the cooling tube assembly 10 also includes: a second cold tube assembly 2, along the first direction, the second cold tube assembly 2 is arranged on the side of the battery module 20 away from the first cold tube assembly 1, the second cold tube assembly 2 includes a third cold tube 21 and a fourth cold tube 22 arranged in the second direction, the third cold tube 21 and the fourth cold tube 22 both have an inlet 15 and an outlet 16, the inlet 15 of the third cold tube 21 is connected to the inlet 15 of the fourth cold tube 22 through a third joint water nozzle 23, the outlet 16 of the third cold tube 21 is connected to the outlet 16 of the fourth cold tube 22 through a fourth joint water nozzle 24, the third joint water nozzle 23 is connected to the liquid inlet pipe 3, and the fourth joint water nozzle 24 is connected to the liquid outlet pipe 4.

[0055] It can be understood that by cooling the two ends of the battery module 20 along the first direction respectively through the first cold pipe assembly 1 and the second cold pipe assembly 2, not only the heat exchange efficiency of the battery module 20 can be improved, thereby improving the cooling and heating efficiency of the battery module 20, but also the temperature difference between the two ends of the battery module 20 along the first direction can be reduced, thereby facilitating the normal operation of the battery module 20.

[0056] Among them, the third cold pipe 21 and the fourth cold pipe 22 are arranged in parallel, and the refrigerant enters the third cold pipe 21 and the fourth cold pipe 22 at the same time from the liquid inlet pipe 3 through the third joint water nozzle 23, and exchanges heat with the battery module 20 along the way, thereby realizing heating and cooling of the battery module 20, and is gathered to flow to the liquid outlet pipe 4 through the fourth joint water nozzle 24, thereby realizing the circulation of the refrigerant. Among them, since the third cold pipe 21 and the fourth cold pipe 22 are arranged in the second direction, the heat exchange efficiency of the battery module 20 in the second direction is further improved, and the heating and cooling effects are improved, so that the battery module 20 can work normally.

[0057] At the same time, the two ends of the battery module 20 along the first direction are cooled respectively by the first cold pipe assembly 1 and the second cold pipe assembly 2. Compared with cooling by setting cold liquid plates at both ends of the battery module along the second direction, the cold liquid plates at both ends need to completely cover the two ends of the battery module along the first direction, and the amount of manufacturing materials required is large. The first cold pipe assembly 1 and the second cold pipe assembly 2 do not need to completely cover the two ends of the battery module 20 along the first direction, and the amount of manufacturing materials required is small, thereby further reducing the manufacturing cost.

[0058] In addition, the third joint water nozzle 23, the fourth joint water nozzle 24, the second joint water nozzle 14 and the first joint water nozzle 13 have the same structure, that is, the third joint water nozzle 23, the fourth joint water nozzle 24, the second joint water nozzle 14 and the first joint water nozzle 13 can be manufactured by the same mold, thereby further reducing the number of molds, thereby further reducing the cost of the cooling pipe assembly 10.

[0059] In some embodiments of the present invention, Figure 3 and Figure 8 As shown, the third joint water nozzle 23 and the fourth joint water nozzle 24 are spaced apart in the second direction. In the first direction, the third joint water nozzle 23 is arranged opposite to the liquid inlet pipe 3, and the fourth joint water nozzle 24 is arranged opposite to the liquid outlet pipe 4.

[0060] It can be understood that, in the first direction, the third joint water nozzle 23 is arranged opposite to the liquid inlet pipe 3, and the fourth joint water nozzle 24 is arranged opposite to the liquid outlet pipe 4, thereby optimizing the arrangement and layout between the third joint water nozzle 23, the fourth joint water nozzle 24, the liquid inlet pipe 3 and the liquid outlet pipe 4, which can facilitate the connection between the third joint water nozzle 23 and the liquid inlet pipe 3, and also facilitate the connection between the fourth joint water nozzle 24 and the liquid outlet pipe 4, thereby improving the assembly efficiency.

[0061] In some embodiments of the present invention, Figure 3 , Figure 4 and Figure 8 As shown, the first cold tube 11 can coincide with the projection of the third cold tube 21 perpendicular to the first direction after rotating 180° around the axis extending in the second direction, the first cold tube 11 can coincide with the projection of the second cold tube 12 perpendicular to the first direction after rotating 180° around the axis extending in the first direction, the second cold tube 12 can coincide with the projection of the fourth cold tube 22 perpendicular to the first direction after rotating 180° around the axis extending in the second direction, and the third cold tube 21 can coincide with the projection of the fourth cold tube 22 perpendicular to the first direction after rotating 180° around the axis extending in the first direction.

[0062] It can be understood that the first cold pipe 11 can obtain the second cold pipe 12, the third cold pipe 21 and the fourth cold pipe 22 through rotational change, so that the first cold pipe 11, the second cold pipe 12, the third cold pipe 21 and the fourth cold pipe 22 can be produced by the same mold, thereby reducing the number of molds and further reducing the manufacturing cost. The first cold pipe 11 only needs to be rotated to obtain the second cold pipe 12, the third cold pipe 21 and the fourth cold pipe 22, which makes assembly convenient and improves installation efficiency.

[0063] In some embodiments of the present invention, Figure 1 and Figure 2As shown, the battery module 20 includes a first column of submodules 201 and a second column of submodules 201 spaced apart along the second direction. The first column of submodules 201 and the second column of submodules 201 are spaced apart along the second direction, which can avoid heat transfer between the first column of submodules 201 and the second column of submodules 201, thereby reducing the risk of thermal runaway. The first column of submodules 201 and the second column of submodules 201 both include a plurality of submodules 201 arranged along the third direction, thereby the plurality of submodules 201 work together to increase the capacity of the battery module 20. For example, in Figure 1 and Figure 2 In the example shown, the first column of sub-modules 201 and the second column of sub-modules 201 both include four sub-modules 201 arranged along the third direction, but the present invention is not limited thereto, and the number of sub-modules 201 can be more or less, such as 3, 5, 6 or 7, etc.

[0064] Furthermore, if Figure 1 As shown, along the second direction, the liquid inlet pipe 3 and the liquid outlet pipe 4 are located between the first row of sub-modules 201 and the second row of sub-modules 201. Since the first row of sub-modules 201 and the second row of sub-modules 201 are spaced apart in the second direction, and the liquid inlet pipe 3 and the liquid outlet pipe 4 are located between the first row of sub-modules 201 and the second row of sub-modules 201, this part of the space is utilized, thereby optimizing the volume of the battery pack 100 and further reducing the cost.

[0065] Furthermore, if Figure 1 , Figure 3 and Figure 8 As shown, at least one first cooling tube 11 and at least one third cooling tube 21 are respectively provided at both ends of each submodule 201 in the first column of submodules 201 along the first direction, and at least one second cooling tube 12 and at least one fourth cooling tube 22 are respectively provided at both ends of each submodule 201 in the second column of submodules 201 along the first direction. Thus, the heating and cooling efficiency of each submodule 201 in the first column of submodules 201 and each submodule 201 in the second column of submodules 201 is improved, thereby improving the heating and cooling efficiency of the first column of submodules 201 and the second column of submodules 201.

[0066] For example, Figure 1 , Figure 3 and Figure 8 In the example shown, each sub-module 201 of the first column of sub-modules 201 is provided with a first cooling tube 11 and a third cooling tube 21 at both ends along the first direction, and each sub-module 201 of the second column of sub-modules 201 is provided with a second cooling tube 12 and a fourth cooling tube 22 at both ends along the first direction.

[0067] In some embodiments of the present invention, Figure 1-Figure 3 and Figure 8As shown, the liquid inlet pipe 3 and the liquid outlet pipe 4 are arranged at one end of the battery module 20 close to the first cooling pipe assembly 1 along the first direction. The cooling pipe assembly 10 also includes: a first transfer tube 5 and a second transfer tube 6. One end of the first transfer tube 5 is connected to the liquid inlet pipe 3, and the other end is connected to the third joint water nozzle 23; one end of the second transfer tube 6 is connected to the liquid outlet pipe 4, and the other end is connected to the fourth joint water nozzle 24.

[0068] It can be understood that since the liquid inlet pipe 3 and the liquid outlet pipe 4 are arranged at one end of the battery module 20 close to the first cold pipe assembly 1 along the first direction, the liquid inlet pipe 3 and the liquid outlet pipe 4 are arranged away from the second cold pipe assembly 2. In order to facilitate the connection between the liquid inlet pipe 3 and the liquid outlet pipe 4 and the second cold pipe assembly 2, a first transfer pipe 5 and a second transfer pipe 6 are provided. The first transfer pipe 5 and the second transfer pipe 6 both extend along the first direction, so that the liquid inlet pipe 3 and the liquid outlet pipe 4 can be connected to the second cold pipe assembly 2 through the first transfer pipe 5 and the second transfer pipe 6.

[0069] Furthermore, if Figure 2 As shown, the battery module 20 includes a first row of sub-modules 201 and a second row of sub-modules 201 spaced apart along the second direction, and a longitudinal beam 30 is further provided between the first row of sub-modules 201 and the second row of sub-modules 201. Along the first direction, the longitudinal beam 30 is provided between the liquid inlet pipe 3 and the liquid outlet pipe 4 and the second cold pipe assembly 2, and the longitudinal beam 30 has a first through hole and a second through hole penetrating the longitudinal beam 30 along the first direction, wherein the first transfer tube 5 is provided in the first through hole, and the second transfer tube 6 is provided in the second through hole, thereby facilitating the connection between the first transfer tube 5 and the third joint faucet 23, and the connection between the second transfer tube 6 and the fourth joint faucet 24.

[0070] In some embodiments of the present invention, Figure 3 , Figure 6 and Figure 8 As shown, the first joint water nozzle 13 and the second joint water nozzle 14 are respectively arranged at the two ends of the first cold pipe assembly 1 along the third direction, the third joint water nozzle 23 and the fourth joint water nozzle 24 are respectively arranged at the two ends of the second cold pipe assembly 2 along the third direction, the second joint water nozzle 14 and the third joint water nozzle 23 are located at the same end of the two ends of the first cold pipe assembly 1 along the third direction, and the first joint water nozzle 13 and the fourth joint water nozzle 24 are arranged at the same end of the two ends of the first cold pipe assembly 1 along the third direction.

[0071] It can be understood that, since the first joint water nozzle 13 and the third joint water nozzle 23 are connected to the liquid inlet pipe 3, the second joint water nozzle 14 and the fourth joint water nozzle 24 are connected to the liquid outlet pipe 4, the first joint water nozzle 13, the second joint water nozzle 14, the third joint water nozzle 23 and the fourth joint water nozzle 24 are staggered in the above manner, in the first cold pipe assembly 1, the flow direction of the refrigerant is from the first joint water nozzle 13 to the second joint water nozzle 14, and in the second cold pipe assembly 2, the flow direction of the refrigerant is from the third joint water nozzle 2 3 flows to the fourth joint water nozzle 24. Since the second joint water nozzle 14 and the third joint water nozzle 23 are located at the same end of the first cold pipe assembly 1 along the third direction, the first joint water nozzle 13 and the fourth joint water nozzle 24 are arranged at the same end of the first cold pipe assembly 1 along the third direction, so that in the second cold pipe assembly 2, the flow direction of the refrigerant is from the second joint water nozzle 14 to the first joint water nozzle 13, so that the flow directions of the refrigerants in the first cold pipe assembly 1 and the second cold pipe assembly 2 are opposite.

[0072] As a result, the flow directions of the refrigerant at both ends of the battery module 20 along the first direction are opposite, balancing the overall heat exchange efficiency of the battery module 20 and the cooling tube assembly 10 in the third direction, thereby improving the uneven temperature distribution of the battery module 20 along the third direction.

[0073] In some embodiments of the present invention, Figure 1 , Figure 3 and Figure 8 As shown, at least one of the first cooling tube 11, the second cooling tube 12, the third cooling tube 21 and the fourth cooling tube 22 extends in a winding manner in the third direction. Figure 1 and Figure 3 As shown, the first cold pipe 11, the second cold pipe 12, the third cold pipe 21 and the fourth cold pipe 22 all meander and extend in the third direction, but the utility model is not limited to this. It can also be that one of the first cold pipe 11, the second cold pipe 12, the third cold pipe 21 and the fourth cold pipe 22 meanders and extends in the third direction, or two of the first cold pipe 11, the second cold pipe 12, the third cold pipe 21 and the fourth cold pipe 22 meander and extend in the third direction, or three of the first cold pipe 11, the second cold pipe 12, the third cold pipe 21 and the fourth cold pipe 22 meander and extend in the third direction.

[0074] It can be understood that the first cold pipe 11, the second cold pipe 12, the third cold pipe 21 and the fourth cold pipe 22 meander in the third direction to increase the flow path of the refrigerant in the first cold pipe 11, the second cold pipe 12, the third cold pipe 21 and the fourth cold pipe 22, so that the refrigerant and the battery module 20 can fully exchange heat, thereby improving the heat exchange effect. At the same time, the area covered at both ends of the battery module 20 along the first direction is also increased, thereby further improving the heat exchange efficiency.

[0075] Below Figure 3 and Figure 8 Taking the first cooling pipe 11 in the figure as an example, it is explained that the first cooling pipe 11, the second cooling pipe 12, the third cooling pipe 21 and the fourth cooling pipe 22 extend in a winding manner in the third direction:

[0076] The first cold pipe 11 first extends along the second direction toward a direction away from the second cold pipe 12, then extends to the third direction, then extends along the second direction toward a direction close to the second cold pipe 12, then extends to the third direction, then extends along the second direction toward a direction away from the second cold pipe 12, then extends to the third direction, and finally extends along the second direction toward a direction close to the second cold pipe 12.

[0077] The battery pack 100 according to the embodiment of the present invention includes the cooling tube assembly 10 described above.

[0078] According to the battery pack 100 of the embodiment of the utility model, by setting the above-mentioned cooling pipe assembly 10, the inlet 15 of the first cooling pipe 11 is connected with the inlet 15 of the second cooling pipe 12 through the first joint nozzle 13, and the outlet 16 of the first cooling pipe 11 is connected with the outlet 16 of the second cooling pipe 12 through the second joint nozzle 14, and the first direction and the second direction are perpendicular to each other; the liquid inlet pipe 3 is connected with the first joint nozzle 13; and the liquid outlet pipe 4 is connected with the second joint nozzle 14. Thus, the cooling of the battery module 20 by the cooling pipe assembly 10 is achieved, and the amount of manufacturing materials required is small, thereby reducing the manufacturing cost.

[0079] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0080] Although the embodiments of the present invention have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A cooling pipe assembly, characterized in that: For battery modules, including: A first cold pipe assembly, the first cold pipe assembly is located at one side of the battery module along the first direction, the first cold pipe assembly includes a first cold pipe and a second cold pipe arranged in the second direction, the first cold pipe and the second cold pipe both have an inlet and an outlet, the inlet of the first cold pipe is connected to the inlet of the second cold pipe through a first joint water nozzle, the outlet of the first cold pipe is connected to the outlet of the second cold pipe through a second joint water nozzle, and the first direction and the second direction are perpendicular to each other; A liquid inlet pipe, the liquid inlet pipe is connected to the first joint faucet; A liquid outlet pipe is connected to the second joint faucet.

2. The cooling tube assembly according to claim 1, characterized in that: The liquid outlet pipe is spaced apart from the liquid inlet pipe in the second direction, and the liquid outlet pipe and the liquid inlet pipe extend along the third direction. The first joint water nozzle and the second joint water nozzle are spaced apart from each other in the second direction. In the first direction, the first joint water nozzle is arranged opposite to the liquid inlet pipe, and the second joint water nozzle is arranged opposite to the liquid outlet pipe. The first direction, the second direction and the third direction are perpendicular to each other.

3. The cooling tube assembly according to claim 2, characterized in that: Also includes: A second cold pipe assembly, along the first direction, the second cold pipe assembly is arranged on a side of the battery module away from the first cold pipe assembly, the second cold pipe assembly includes a third cold pipe and a fourth cold pipe arranged in the second direction, the third cold pipe and the fourth cold pipe both have an inlet and an outlet, the inlet of the third cold pipe is connected to the inlet of the fourth cold pipe through a third joint water nozzle, the outlet of the third cold pipe is connected to the outlet of the fourth cold pipe through a fourth joint water nozzle, the third joint water nozzle is connected to the liquid inlet pipe, and the fourth joint water nozzle is connected to the liquid outlet pipe.

4. The cooling tube assembly according to claim 3, characterized in that: The third joint faucet and the fourth joint faucet are spaced apart in the second direction. In the first direction, the third joint faucet is arranged opposite to the liquid inlet pipe, and the fourth joint faucet is arranged opposite to the liquid outlet pipe.

5. The cooling tube assembly according to claim 4, characterized in that: The first cold tube can coincide with the projection of the third cold tube perpendicular to the first direction after rotating 180° around the axis extending along the second direction; the first cold tube can coincide with the projection of the second cold tube perpendicular to the first direction after rotating 180° around the axis extending along the first direction; the second cold tube can coincide with the projection of the fourth cold tube perpendicular to the first direction after rotating 180° around the axis extending along the second direction; the third cold tube can coincide with the projection of the fourth cold tube perpendicular to the first direction after rotating 180° around the axis extending along the first direction.

6. The cooling tube assembly according to claim 3, characterized in that: The battery module includes a first column of sub-modules and a second column of sub-modules spaced apart along the second direction, and the first column of sub-modules and the second column of sub-modules each include a plurality of sub-modules arranged along the third direction, Along the second direction, the liquid inlet pipe and the liquid outlet pipe are located between the first column sub-modules and the second column sub-modules, and each of the sub-modules in the first column sub-modules is respectively provided with at least one first cold pipe and at least one third cold pipe at both ends along the first direction, and each of the sub-modules in the second column sub-modules is respectively provided with at least one second cold pipe and at least one fourth cold pipe at both ends along the first direction.

7. The cooling tube assembly according to claim 3, characterized in that: The liquid inlet pipe and the liquid outlet pipe are arranged at one end of the battery module close to the first cooling pipe assembly along the first direction, and the cooling pipe assembly further includes: A first adapter tube, one end of which is connected to the liquid inlet pipe, and the other end of which is connected to the third joint faucet; A second adapter tube, one end of which is connected to the liquid outlet pipe, and the other end of which is connected to the fourth joint faucet.

8. The cooling tube assembly according to claim 3, characterized in that: The first joint faucet and the second joint faucet are respectively arranged at the two ends of the first cold pipe assembly along the third direction, the third joint faucet and the fourth joint faucet are respectively arranged at the two ends of the second cold pipe assembly along the third direction, the second joint faucet and the third joint faucet are located at the same end of the two ends of the first cold pipe assembly along the third direction, and the first joint faucet and the fourth joint faucet are arranged at the same end of the two ends of the first cold pipe assembly along the third direction.

9. The cooling tube assembly according to claim 3, characterized in that: At least one of the first cold pipe, the second cold pipe, the third cold pipe, and the fourth cold pipe extends in a winding manner in the third direction.

10. A battery pack, characterized in that: Comprising a cooling tube assembly according to any one of claims 1-9.

Images