Direct cooling system pipeline and direct cooling type energy storage equipment

Abstract

The utility model discloses a direct cooling system pipeline and direct cooling type energy storage equipment, which comprises a flow guide pipe, the flow guide pipe comprises a leading-in pipe section, a first bent pipe section and a leading-out pipe section, and the leading-in pipe section is communicated with the leading-out pipe section through the first bent pipe section; the liquid separation assembly comprises a plurality of liquid separation pipes and a liquid separation head, the liquid separation head is provided with a plurality of liquid separation holes, and the liquid separation holes are communicated with the liquid separation pipes respectively and guide fluid in the flow guide pipe to be guided out of the liquid separation pipes. The direct cooling type energy storage equipment comprises the direct cooling system pipeline, a battery pack and a direct cooling unit. During use, a refrigerant medium is uniformly distributed into the plurality of liquid distribution pipes through the liquid distribution heads arranged at the leading-out pipe sections, and uniformly flows to each battery pack according to a specific flow direction, so that the refrigerant flows obtained by each battery pack are approximately the same, local supercooling or superheating is avoided, and the cooling uniformity is improved; and the leading-in pipe section and the leading-out pipe section are connected through the first bent pipe section, so that a complex space structure can be better adapted.

Description

Technical Field

[0001] The utility model relates to the technical field of cooling, in particular to a direct cooling system pipeline and a direct cooling energy storage device. Background Art

[0002] In the design of the circulation pipeline of a direct cooling energy storage cabinet, in order to transport the refrigerant to each battery pack, multiple branch pipes need to be set. Currently, the common layout is the "rich" - shaped layout, that is, the main pipeline extends upward from the direct cooling unit below to the top of the battery compartment, and the branch pipelines are branched from the main pipeline and respectively connected to each battery pack; or the "field" - shaped layout, that is, the main pipeline forms a frame structure similar to the character "field" in the horizontal and vertical directions, and branch pipes are branched at each intersection or node of the "field" character and connected to each battery pack to achieve uniform distribution of the refrigerant.

[0003] However, the above pipeline layout methods have high space requirements. The equipment interior needs to have a relatively regular and sufficient space to arrange the pipelines, which may not be very suitable for energy storage systems with compact spaces. And under different loads, due to the different lengths and directions of each branch pipeline, it is also difficult to ensure that each battery pack can obtain an accurate and appropriate amount of refrigerant, and there may be a situation of uneven local cooling, resulting in local overheating. Content of the Utility Model

[0004] In order to overcome at least one of the above - mentioned defects of the prior art, the utility model provides a direct cooling system pipeline and a direct cooling energy storage device, the pipeline structure for transporting the refrigerant medium is simple, the installation is convenient, and it can effectively improve the situation of uneven cooling.

[0005] The technical solution adopted by the utility model to solve its problems is as follows:

[0006] A direct cooling system pipeline, comprising:

[0007] A diversion pipe, the diversion pipe includes an inlet pipe section, a first elbow section, and an outlet pipe section, and the inlet pipe section and the outlet pipe section are connected through the first elbow section;

[0008] A liquid - separating component, the liquid - separating component includes a plurality of liquid - separating pipes and a liquid - separating head, the liquid - separating head is connected to the outlet pipe section, the liquid - separating head has a plurality of liquid - separating holes, and the plurality of liquid - separating holes are respectively connected to the plurality of liquid - separating pipes and are used to guide the fluid in the diversion pipe to be evenly exported into the plurality of liquid - separating pipes.

[0009] Further, the aperture diameters of each of the liquid - separating holes are the same.

[0010] Further, the inner diameter value of the diversion pipe is D, the inner diameter value of the liquid - separating pipe is d, the number of the liquid - separating pipes is n, and D≥nd.

[0011] Further, the distribution pipe comprises a plurality of first pipe segments and a plurality of second pipe segments, the first pipe segments are arranged to extend in a first direction, the second pipe segments are arranged to extend in a second direction, the first direction is perpendicular to the second direction, two adjacent first pipe segments and the second pipe segment are connected by a second elbow pipe segment, each second pipe segment closest to the inner side of the distribution head is connected with a plurality of distribution holes, and each second pipe segment farthest from the outer side of the distribution head is connected with an external structure.

[0012] Further, the length of the first pipe segment is L1, the length of the second pipe segment is L2, the number of first pipe segments of each distribution pipe is N1, the number of second pipe segments of each distribution pipe is N2, the length of the distribution pipe is L, L=N1*L1+N2*L2, and the value of L of each distribution pipe is the same.

[0013] Further, each second pipe segment connected with the distribution hole is located below the distribution head.

[0014] Further, the first connecting head is arranged on the inlet pipe segment, and the first connecting head is connected with an external structure and is connected.

[0015] Further, the second connecting head is arranged at the outlet of each distribution pipe, and the second connecting head is connected with an external connecting head and is connected.

[0016] Further, the flow guide pipe and the plurality of distribution pipes are copper pipes.

[0017] Further, the flow guide pipe and the distribution assembly are each provided with two, each flow guide pipe is connected with a plurality of distribution pipes through a distribution head, one flow guide pipe is used for guiding fluid into the plurality of distribution pipes, and the other flow guide pipe is used for guiding fluid out of the plurality of distribution pipes.

[0018] A direct-cooling type energy storage device comprises the direct-cooling system pipeline, a battery pack and a direct-cooling unit, two groups of distribution pipes are connected with the battery pack, one flow guide pipe is connected with the direct-cooling unit, and the other flow guide pipe is connected with an external structure.

[0019] In summary, the direct-cooling system pipeline and the direct-cooling type energy storage device have the following technical effects:

[0020] In specific use, the refrigerant medium used in the cooling device is introduced through the inlet pipe section, then flows to the outlet pipe section through the first elbow pipe section, and finally is evenly distributed into multiple distribution pipelines through the distribution head arranged at the outlet pipe section, so that the refrigerant medium can flow uniformly to each battery pack according to a specific flow direction, thereby ensuring that the refrigerant flow obtained by each battery pack is substantially the same, and the problems of excessive refrigerant flow or insufficient refrigerant flow of some battery packs are avoided, the local overcooling or overheating is avoided, and the uniformity of cooling is improved.

[0021] In addition, and since the inlet pipe section and the outlet pipe section are connected through the first elbow pipe section, the complex space structure can be better adapted, other components can be bypassed, the space utilization rate is improved, and the layout of the entire cooling system is more reasonable and compact. BRIEF DESCRIPTION OF DRAWINGS

[0022] Fig. 1 FIG. 1 is a structural schematic view of an embodiment of the present application;

[0023] Fig. 2 FIG. 2 is another perspective view of the structure of the embodiment 1 of the present application;

[0024] In the drawings, the meanings of the reference signs are as follows:

[0025] 10, flow guide pipe; 11, inlet pipe section; 12, outlet pipe section; 13, first elbow pipe section; 20, distribution pipe; 21, first pipe section; 22, second pipe section; 23, second elbow pipe section; 30, distribution head; 40, first connecting head; 50, second connecting head. DETAILED DESCRIPTION

[0026] In order to better understand and implement, the technical solutions in the embodiments of the present application will be clearly and completely described below in combination with the drawings in the embodiments of the present application.

[0027] In the description of the present application, it should be noted that the orientations or positional relationships indicated by the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like are based on the orientations or positional relationships shown in the drawings, and are only for the purpose of facilitating the description of the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0028] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which the present application belongs. The terms used in the specification of the present application are only for the purpose of describing specific embodiments and are not intended to limit the present application.

[0029] Embodiment 1,

[0030] Referring to Figs. 1-2 The utility model discloses a direct cooling system pipeline, including the flow guide pipe 10 and the liquid distribution assembly, and the flow guide pipe 10 includes the lead-in pipe section 11, the first elbow pipe section 13 and the lead-out pipe section 12, and the lead-in pipe section 11 is conducted with the lead-out pipe section 12 with the first elbow pipe section 13, and the liquid distribution assembly includes a plurality of liquid distribution pipes 20 and the liquid distribution head 30, and the liquid distribution head 30 is connected with the lead-out pipe section 12, and the liquid distribution head 30 has a plurality of liquid distribution holes, and the plurality of liquid distribution holes are conducted with a plurality of liquid distribution pipes 20 respectively and are used to guide the fluid in the flow guide pipe 10 to lead out in a plurality of liquid distribution pipes 20.

[0031] On the basis of the above structure, during assembly, the lead-in pipe section 11 and the lead-out pipe section 12 are placed vertically or transversely according to the shape inside the cooling equipment, and then are connected through the first elbow pipe section 13, so that the change of fluid direction can be realized in limited space, and the layout of the pipeline system is more flexible.

[0032] During specific use, the refrigerant medium is introduced into the first elbow pipe section 13 after flowing to the lead-in pipe section 11, and then flows to the lead-out pipe section 12, and is evenly distributed into a plurality of liquid distribution pipes 20 through a plurality of liquid distribution holes on the liquid distribution head 30, so that the refrigerant medium can flow uniformly to each battery pack according to a specific flow direction, so that the refrigerant flow obtained by each battery pack is approximately the same, and the refrigerant flow in some battery packs is not too large or too small, so that local overcooling or overheating is avoided, and the uniformity of cooling is improved.

[0033] More specifically, since the lead-in pipe section 11 and the lead-out pipe section 12 are conducted through the first elbow pipe section 13, the lead-in pipe section 11 enables the refrigerant medium to enter the flow guide pipe 10 in a relatively stable state, and the first elbow pipe section 13 plays a role in changing the flow direction of the fluid, so that the fluid can smoothly transition from the lead-in pipe section 11 to the lead-out pipe section 12, avoiding unstable flow conditions such as turbulence and vortex that may occur when the fluid suddenly changes direction, ensuring the smoothness of fluid flow, and being conducive to improving the uniformity of fluid distribution.

[0034] In addition, in energy storage cabinets or other equipment that requires a cooling mechanism, the space layout is often complex, and there are various components such as battery packs of various shapes and positions, so when the flow guide pipe 10 is installed, the angle and length of the first elbow pipe section 13 and other parameters can be adjusted according to the specific installation position and requirements, bypassing other components to adapt to different pipeline routes and connection requirements, so that the installation is flexible, the application range is wide, and at the same time, the space utilization rate can be improved, the layout of the entire cooling system is more reasonable and compact, so that it can better adapt to complex space structures and avoid excessive crowding or disorder of the pipeline.

[0035] It should be noted that the liquid distributor 30 in the embodiment can be selected from existing liquid distributors or liquid distributors 30, such as air conditioner liquid distributors / heads or liquid cooling liquid distributors / heads.

[0036] Further, the diameters of the liquid distribution holes are consistent.

[0037] Specifically, in order to uniformly distribute the fluid in the flow guide pipe 10 to the plurality of liquid distribution pipes 20, the diameters of the liquid distribution holes in the liquid distribution head 30 are set to be consistent in the embodiment. In this way, the channels with the same diameters can make the fluid pass through at the same flow rate, thereby achieving uniform distribution of the fluid to the plurality of liquid distribution pipes 20, balancing the flow rates of the branches, ensuring that the flow rates of the refrigerant obtained by each battery pack are substantially the same, avoiding the situation that some liquid distribution pipes 20 have excessively large or small flow rates, and improving the uniformity of cooling.

[0038] Further, the inner diameter of the flow guide pipe 10 is D, the inner diameter of the liquid distribution pipe 20 is d, the number of the liquid distribution pipes 20 is n, and D≥nd.

[0039] Specifically, since the flow rate of the fluid in the pipe is proportional to the cross-sectional area of the pipe, if the value of D is too small, that is, the cross-sectional area of the flow guide pipe 10 is too small, even if the liquid distribution holes of the liquid distribution head 30 are designed to be reasonable, it may not be possible to achieve uniform distribution due to insufficient total flow rate. Therefore, in the embodiment, the value of D is greater than or equal to the value of nd, so as to ensure that the cross-sectional area of the flow guide pipe 10 can meet the requirement of the total flow rate of all the liquid distribution pipes 20, so that there is sufficient fluid supplied to each liquid distribution pipe 20, and the flow balance of the entire system is ensured.

[0040] In addition, the larger inner diameter D of the flow guide pipe 10 can make the flow rate of the fluid in the flow guide pipe 10 relatively low. The lower the flow rate, the smaller the pressure loss, which helps to ensure that the pressure in the flow guide pipe 10 can stably deliver the fluid to each liquid distribution pipe 20, avoiding uneven distribution or unstable operation of the system due to excessive pressure loss.

[0041] Further, the liquid distribution pipe 20 includes a plurality of first pipe segments 21 and a plurality of second pipe segments 22. The first pipe segments 21 are arranged to extend in a first direction, and the second pipe segments 22 are arranged to extend in a second direction. The first direction is perpendicular to the second direction. Adjacent two first pipe segments 21 and second pipe segments 22 are connected by a second elbow pipe segment 23. Each second pipe segment 22 closest to the innermost side of the liquid distribution head 30 is in communication with a plurality of liquid distribution holes, and each second pipe segment 22 farthest from the outermost side of the liquid distribution head 30 is connected to an external structure.

[0042] Specifically, the first direction is the transverse direction of the entire structure, and the second direction is the vertical direction, that is, the two directions are perpendicular to each other, so that the first pipe section 21 and the second pipe section 22 are perpendicular to each other. When assembling, the second pipe sections 22 in the vertical direction are communicated with the distribution head 30, and when the refrigerant medium enters the second pipe section 22 from the distribution hole, the gravity can help the refrigerant medium flow more smoothly downward, especially for some refrigerant media with larger viscosity or lower flow rate, the gravity can enhance the flow power of the refrigerant medium in the second pipe section 22, which helps to achieve more uniform and stable distribution effect and reduce the stagnation and accumulation of fluid in the pipe.

[0043] In addition, the transverse first pipe section 21 and the vertical second pipe section 22 are perpendicular to each other, so that the flow direction of the fluid in the pipe changes by 90°. This change in flow direction can break the laminar flow state of the refrigerant medium to a certain extent, promote the mixing and dispersion of the refrigerant medium, and make the distribution more uniform and accurate. The refrigerant medium can change the direction of flow in the pipe and be uniformly distributed, so that the flow of each branch is relatively balanced.

[0044] More specifically, the first pipe section 21 and the second pipe section 22 are arranged perpendicular to each other and connected through the second elbow pipe section 23. During installation, if obstacles or other restrictions are encountered, the operator can adjust the bending angle and position of the second elbow pipe section 23 to change the direction of the first pipe section 21 and the second pipe section 22, avoid obstacles, and find the best installation path to ensure that the distribution pipe 20 can be installed smoothly in a complex space environment and realize compact layout to better adapt to complex space structures and avoid excessive crowding or disorder of the pipeline system, making the layout of the pipeline system more flexible.

[0045] It should be noted that the specific number of the first pipe section 21 and the second pipe section 22 is adjusted according to the installation space, and each first pipe section 21 and second pipe section 22 is connected through a second elbow pipe section 23 and communicated.

[0046] Further, the length of the first pipe section 21 is L1, the length of the second pipe section 22 is L2, the number of the first pipe section 21 of each distribution pipe 20 is N1, the number of the second pipe section 22 of each distribution pipe 20 is N2, the length of the distribution pipe 20 is L, L=N1*L1+N2*L2, and the L value of each distribution pipe 20 is the same.

[0047] Specifically, by reasonably setting the values of L1, L2, N1, and N2, the length of each distribution pipe 20 is ensured to be the same, for example, when one of the distribution pipes 20 has L1 = 2m, N1 = 3, L2 = 2m, and N2 = 2, the total length L = N1*L1+N2*L2 = 3*2+2*2 = 10m, another distribution pipe 20 has L1 = 1m, N1 = 6, L2 = 2m, and N2 = 2, the total length L = N1*L1+N2*L2 = 6*1+2*2 = 10m, or L1 = 4m, N1 = 2, L2 = 1m, and N2 = 2, the total length L = N1*L1+N2*L2 = 2*4+2*1 = 10m, and so on. This ensures that the length of each distribution pipe 20 is the same, which helps to ensure that the refrigerant medium experiences the same or similar path length and flow conditions in each distribution pipe 20, so that the refrigerant medium can be more evenly distributed in each distribution pipe 20, improving the accuracy and stability of distribution, and avoiding the situation that some branch pipes have excessively large or small flow rates. When the refrigeration system pipeline in the embodiment is applied to an energy storage cabinet or other equipment that needs to be cooled, the local overheating or overcooling of battery packs or other components in the equipment can be avoided, and the uniformity of cooling can be improved.

[0048] In addition, in the case of limited space, the uniform length value can make the arrangement of multiple distribution pipes 20 more regular and orderly, facilitating connection and integration with other equipment or pipelines, and being conducive to the compact layout and space utilization of the entire system.

[0049] More specifically, the same length of the distribution pipe 20 helps to maintain the pressure balance and flow stability of the system, and the flow resistance of the fluid in each distribution pipe 20 is relatively consistent, so that pressure fluctuations or flow abnormalities caused by excessively long or short pipelines are avoided, thereby improving the stability and reliability of the entire system and reducing system failures and operating efficiency caused by uneven flow.

[0050] It should be noted that, in order to ensure that the length of each distribution pipe 20 is uniform, the length of the second elbow pipe section 23 used to connect the first pipe section 21 and the second pipe section 22 is also uniform, and the number of second elbow pipe sections 23 is adjusted in real time according to the number of first pipe sections 21 and second pipe sections 22 in each distribution pipe 20, so that the sum of the value of L and the length of the second elbow pipe section 23 is uniform, thereby ensuring that the length of each distribution pipe 20 is the same.

[0051] In addition, in order to ensure the flow rate and flow resistance of the refrigerant medium flowing in each distribution pipe 20, the pipe diameter of the first pipe section 21, the second pipe section 22 and the second elbow pipe section 23 of each distribution pipe 20 is equal, so that the flow resistance and flow rate in each pipe are consistent, and the pressure in each distribution pipe 20 is uniform, so that the refrigerant medium flows stably and uniformly, thereby indirectly avoiding the situation of local overheating or overcooling of the battery, and improving the uniformity of cooling.

[0052] Further, the second pipe section 22 communicating with the distribution hole is located below the distribution head 30.

[0053] Specifically, since the second pipe section 22 is arranged in the second direction (i.e. the vertical direction) and is connected below the distribution head 30, under the action of gravity, the vertical second pipe section 22 located below the distribution head 30 can make the liquid flow downward more smoothly, so that the distribution process is more natural and efficient, and the refrigerant medium can flow to the target position through the second pipe section 22 more quickly with the help of gravity, reducing the residue and accumulation of liquid in the pipe, and improving the speed and effect of distribution.

[0054] In addition, when the second pipe section 22 is below the distribution head 30, gravity will prevent the liquid from flowing back to the distribution head 30, ensuring the unidirectionality of distribution, making the distribution process more stable and controllable. In contrast, if the second pipe section 22 is above the distribution head 30, the liquid may not be able to flow smoothly into the pipe without enough power, or even the liquid that has entered the pipe may flow back to the distribution head 30 due to gravity, affecting the accuracy and efficiency of distribution.

[0055] Further, the introduction pipe section 11 is provided with a first connecting head 40, which is connected with and communicated with the external structure.

[0056] Specifically, in order to enable the introduction pipe section 11 to be conveniently connected with various different external structures (such as a box containing the refrigerant medium, a cabinet or a compressor set), the first connecting head 40 is arranged at the introduction pipe section 11 in the embodiment, and when assembled, the first connecting head 40 is connected with and communicated with the external structure, so as to provide a standardized connection interface between the introduction pipe section 11 and the external structure through the first connecting head 40, enabling the introduction pipe section 11 to be conveniently connected with various different external devices, pipelines or systems, and facilitating later installation.

[0057] As preferred, the first connecting head 40 can be selected from existing pressure plate joints (such as flat pressure plate joints or inclined pressure plate joints, etc.), which are assembled by pressure plates and bolts and other components to tightly connect the inlet pipe with the external structure, so as to provide reliable fastening force and ensure the stability of the connection. Compared with some traditional connection methods such as threaded connection, the pressure plate joint is not prone to loosening under a larger pressure and tension, and can better maintain the reliability of the connection and indirectly improve the stability of the entire structure.

[0058] Further, the second connecting head 50 is arranged at the outlet of each distribution pipe 20 and connected with the external structure.

[0059] Specifically, after the refrigerant medium is introduced, it needs to be introduced into the cooling equipment (such as a cold plate, a cooler or equipment that needs to be cooled) through each distribution pipe 20, so as to cool the equipment or device. Therefore, the second connecting head 50 is arranged at the outlet of each distribution pipe 20 for leading out the refrigerant medium, so as to provide a standardized connection interface between the distribution pipe 20 and the external structure (here, referring to a cold plate or a cooler or a refrigerant flow channel built in a battery pack) through the second connecting head 50, so that the distribution pipe 20 can be stably connected with the external structure, facilitating the later installation and improving the stability of the entire structure.

[0060] Similarly, the second connecting head 50 can also be selected from existing pressure plate joints (such as flat pressure plate joints or inclined pressure plate joints, etc.).

[0061] Further, the flow guide pipe 10 and the plurality of distribution pipes 20 are copper pipes.

[0062] Specifically, since copper has good corrosion resistance in general environment and can resist the corrosion of various refrigerant media, including common freon, ammonia and the like, the flow guide pipe 10 and the distribution pipe 20 are not easily corroded by the refrigerant medium in the long-term use process, so as to ensure the sealing and reliability of the pipe system and reduce the risk of leakage caused by corrosion.

[0063] Further, the flow guide pipe 10 and the distribution assembly are both provided with two, each flow guide pipe 10 is connected with the plurality of distribution pipes 20 through a distribution head 30, one of the flow guide pipes 10 is used to guide the fluid to be introduced into the plurality of distribution pipes 20, and the other flow guide pipe 10 is used to guide the fluid in the plurality of distribution pipes 20 to be discharged.

[0064] Specifically, two flow guide pipes 10 and two sets of distribution assemblies are provided. During assembly, one set of distribution pipes 20 is respectively connected to the liquid inlet of one flow guide pipe 10 and the required external equipment (such as the refrigerant channel in the battery pack or the device introduced into the cold plate to uniformly cool the device attached to the cold plate) for cooling, and the other set of distribution pipes 20 is respectively connected to the liquid outlet of the other flow guide pipe 10 and the required external equipment for cooling. In this way, the refrigerant medium is introduced through one of the flow guide pipes 10, uniformly distributed to one set of distribution pipes 20 through the distribution head 30, and uniformly transported to the interior of each required cooling equipment through one set of distribution pipes 20 to cool the equipment, so that each required external equipment (such as each battery pack) can obtain the same flow and temperature of the refrigerant, avoiding the situation that some equipment is over-cooled or insufficiently cooled due to uneven distribution of the refrigerant, and improving the uniformity of cooling.

[0065] After the refrigerant medium in the equipment takes away the heat and is respectively introduced into the other set of distribution pipes 20 through the liquid outlet, the refrigerant medium in the multiple distribution pipes 20 is then concentrated and merged into the flow guide pipe 10 through the distribution head 30, and then concentrated and discharged into the refrigerant medium recycling equipment (such as a direct cooling unit), so as to facilitate the centralized recycling of the refrigerant medium. In comparison, if each distribution pipe 20 is separately recycled, multiple recycling devices are required, and the recycling process is more complex.

[0066] In addition, compared with separately connecting each distribution pipe 20 to the cooling liquid recycling device, the pipelines in the system are complex and intertwined, increasing the difficulty of installation and maintenance. Therefore, by concentrating the cooling liquid of multiple distribution pipes 20 into the flow guide pipe 10, the crossing and winding of the pipelines are indirectly reduced, the complexity of pipeline installation is reduced, the pipeline layout is more simple and clear, and it is convenient to reasonably layout in limited space, so that the overall structure of the equipment is more compact, the space utilization rate is improved, and more installation space is left for other equipment or components.

[0067] Embodiment 2,

[0068] Referring to Figs. 1-2 A direct cooling type energy storage device includes the direct cooling system pipeline in Embodiment 1, the battery pack, and the direct cooling unit. One flow guide pipe 10 is connected to the direct cooling unit, and the other flow guide pipe 10 is connected to the external structure. Two sets of distribution pipes 20 are respectively connected to each battery pack.

[0069] On the basis of the structure, during assembly, the inlet pipe section 11 of one of the flow guide pipes 10 is connected to a direct cooling unit (such as a unit composed of a compressor, a condenser / evaporator, a throttling device, a liquid storage tank, or a device such as a liquid storage tank or a refrigerant tank for storing refrigerant medium), and one set of the distribution pipes 20 is respectively connected to the liquid inlet of the refrigerant flow channel of each battery pack. In this way, the refrigerant medium inside the direct cooling unit can be introduced through the inlet pipe section 11, flow to the outlet pipe section 12 through the first elbow section 13, and then be evenly distributed to the plurality of distribution pipes 20 through the plurality of distribution holes in the distribution head 30, so that the refrigerant medium can flow uniformly to each battery pack according to a specific flow direction, so that the refrigerant flow obtained by each battery pack is substantially the same, and the situation that some battery packs have too large or too small refrigerant flow is avoided, thereby improving the uniformity of cooling. In addition, since the inlet pipe section 11 and the outlet pipe section 12 are connected through the first elbow section 13, the change of the flow direction can be realized in a limited space, and the layout of the pipeline system is more flexible.

[0070] In addition, the other set of distribution pipes 20 is respectively connected to the liquid outlet of the refrigerant flow channel of each battery pack, so that the refrigerant medium after taking away the heat of the battery pack after cooling and cooling is respectively introduced into the other set of distribution pipes 20, and then the refrigerant medium in the plurality of distribution pipes 20 is concentrated and merged into the other flow guide pipe 10 through the distribution head 30, and then is concentrated and discharged into the direct cooling unit, thereby facilitating the centralized recovery and recycling of the refrigerant medium. In comparison, if each distribution pipe 20 is individually recovered, a plurality of recovery devices are required, which not only increases the equipment cost, but also makes the recycling process more complex.

[0071] Compared with connecting each distribution pipe 20 to a cooling liquid recovery device (such as a direct cooling unit) individually, the pipelines in the system are complex, which increases the difficulty of installation and maintenance. Therefore, by concentrating the cooling liquid of the plurality of distribution pipes 20 into the flow guide pipe 10, the crossing and winding of the pipelines are indirectly reduced, the complexity of pipeline installation is reduced, the pipeline layout is more simple and clear, and the equipment can be reasonably arranged in a limited space, so that the overall structure of the equipment is more compact, the space utilization rate is improved, and more installation space is left for other equipment or components.

[0072] The technical means disclosed in the utility model scheme is not limited to the technical means disclosed in the above-mentioned embodiments, and also includes the technical scheme composed of any combination of the above technical features. It should be noted that, for ordinary skilled persons in the technical field, some improvements and refinements can be made without departing from the principles of the utility model, and these improvements and refinements are also considered to be within the protection scope of the utility model.

Claims

1. A direct cooling system piping, characterized in that, include: A flow guide pipe, comprising an inlet pipe section, a first bend pipe section, and an outlet pipe section, wherein the inlet pipe section and the outlet pipe section are connected by the first bend pipe section; The liquid distribution assembly includes multiple liquid distribution tubes and a liquid distribution head. The liquid distribution head is connected to the outlet tube section and has multiple liquid distribution holes. The multiple liquid distribution holes are respectively connected to the multiple liquid distribution tubes and are used to guide the fluid in the guide tube to be discharged out of the multiple liquid distribution tubes.

2. The direct cooling system piping as described in claim 1, characterized in that, Each of the dispensing orifices has the same diameter.

3. The direct cooling system piping as described in claim 2, characterized in that, The inner diameter of the guide tube is D, the inner diameter of the dispensing tube is d, the number of dispensing tubes is n, and D≥nd.

4. The direct cooling system piping as described in claim 3, characterized in that, The dispensing tube includes several first tube segments and several second tube segments. The first tube segments extend along a first direction, and the second tube segments extend along a second direction. The first direction is perpendicular to the second direction. Two adjacent first tube segments and second tube segments are connected by a second bend. Each second tube segment closest to the innermost side of the dispensing head is connected to a plurality of dispensing holes, and each second tube segment furthest from the outermost side of the dispensing head is connected to an external structure.

5. The direct cooling system piping as described in claim 4, characterized in that, The length of the first pipe segment is L1, the length of the second pipe segment is L2, the number of first pipe segments of each liquid distribution pipe is N1, the number of second pipe segments of each liquid distribution pipe is N2, and the length of each liquid distribution pipe is L, where L = N1*L1 + N2*L2; the value of L is the same for each liquid distribution pipe.

6. The direct cooling system piping as described in claim 4, characterized in that, Each of the second pipe segments communicating with the dispensing orifice is located below the dispensing head.

7. The direct cooling system piping as described in claim 1, characterized in that, The inlet tube segment is provided with a first connector, which is connected to and conducts through an external structure.

8. The direct cooling system piping as described in claim 1, characterized in that, Each separator is equipped with a second connector at its outlet, which is connected to and conducts through an external structure.

9. The direct cooling system piping as described in claim 1, characterized in that, The guide tube and the plurality of the liquid distribution tubes are all copper tubes.

10. The direct cooling system piping as described in any one of claims 1-9, characterized in that, Two of each of the flow guide tubes and the liquid distribution assembly are provided. Each flow guide tube is connected to multiple liquid distribution tubes via a liquid distribution head. One of the flow guide tubes is used to guide fluid into multiple liquid distribution tubes, and the other flow guide tube is used to guide fluid out of multiple liquid distribution tubes.

11. A direct-cooling energy storage device, characterized in that, Includes the direct cooling system piping, battery pack, and direct cooling unit as described in any one of claims 1-10, wherein one of the guide pipes is connected to the direct cooling unit, and the other guide pipe is connected to an external structure; the two sets of liquid distribution pipes are respectively connected to each of the battery packs.

Images