Liquid cooling pipeline, liquid cooling system and energy storage cabinet

Abstract

The utility model discloses a liquid cooling pipeline, liquid cooling system and energy storage cabinet, liquid cooling pipeline includes: having first end and second end's liquid inlet main pipe, first end is equipped with the first connecting port of connecting liquid cooling unit, at least three liquid inlet branch pipes, liquid inlet branch pipe is along the length direction interval arrangement of liquid inlet main pipe, the liquid inlet branch pipe of first end close to liquid inlet main pipe has the first pipe diameter, the liquid inlet branch pipe of second end close to liquid inlet main pipe has the third pipe diameter, the rest liquid inlet branch pipe has the second pipe diameter, wherein, first pipe diameter < second pipe diameter < third pipe diameter, be equipped with the first connecting port of can connect liquid cooling unit's liquid outlet main pipe, and liquid outlet branch pipe that liquid outlet main pipe intercommunication, liquid outlet branch pipe and liquid inlet branch pipe correspond to set up, liquid cooling board, liquid cooling board's import and liquid inlet branch pipe intercommunication, liquid cooling board's export and liquid outlet branch pipe intercommunication. In the liquid cooling pipeline from below to top liquid, above -mentioned setting can make the flow distribution in each liquid inlet branch pipe more reasonable, improve the heat dissipation effect of overall device.

Description

Technical Field

[0001] This utility model relates to the field of energy storage liquid cooling technology, specifically a liquid cooling pipeline, a liquid cooling system and an energy storage cabinet. Background Technology

[0002] During the operation of energy storage cabinets, critical components such as batteries generate a significant amount of heat. If this heat cannot be dissipated effectively and promptly, it can lead to overheating, affecting the performance, stability, and lifespan of the energy storage equipment, and potentially even causing safety issues. Liquid cooling systems, which remove heat through the circulation of coolant in pipes, are currently one of the most important methods for heat dissipation in energy storage cabinets. However, existing liquid cooling pipe systems for energy storage cabinets have design flaws. The pipe diameters of each branch often use a uniform specification or a simple variable diameter method, resulting in an unreasonable distribution of coolant flow in each branch. Some branches have excessive flow, leading to energy waste, while others have insufficient flow to meet heat dissipation requirements, resulting in uneven temperature distribution within the energy storage cabinet and severely impacting its overall performance. Summary of the Invention

[0003] To overcome the shortcomings of the prior art, this utility model provides a liquid cooling pipeline, a liquid cooling system, and an energy storage cabinet. The liquid cooling pipeline includes five inlet branch pipes and an outlet branch pipe. The diameters of the five inlet branch pipes are, in order, a first diameter, a second diameter, a second diameter, a second diameter, and a third diameter, wherein the first diameter < the second diameter < the third diameter. In a liquid cooling pipeline with liquid entering from bottom to top, the above arrangement can make the flow distribution in each inlet branch pipe more reasonable and improve the heat dissipation effect of the overall device.

[0004] To achieve the above objectives, the technical solution adopted by this utility model is: a liquid cooling pipeline, comprising: The liquid inlet main pipe has a first end and a second end, and the first end of the liquid inlet main pipe is provided with a first connection port that can be connected to a liquid cooling unit; The liquid inlet branch pipe is connected to the liquid inlet main pipe. There are at least three liquid inlet branch pipes, which are arranged at intervals along the length of the liquid inlet main pipe. The liquid inlet branch pipe closest to the first end of the liquid inlet main pipe has a first pipe diameter, the liquid inlet branch pipe closest to the second end of the liquid inlet main pipe has a third pipe diameter, and the remaining liquid inlet branch pipes have a second pipe diameter, wherein the first pipe diameter < the second pipe diameter < the third pipe diameter. A liquid outlet main pipe, one end of which is provided with a first connection port that can be connected to a liquid cooling unit; The liquid outlet branch pipe is connected to the liquid outlet main pipe, and the liquid outlet branch pipe and the liquid inlet branch pipe are respectively arranged, and each of the liquid outlet branch pipes is arranged at intervals along the length direction of the liquid outlet main pipe. A liquid cooling plate having an inlet and an outlet, wherein the inlet of the liquid cooling plate is connected to the liquid inlet branch pipe, and the outlet of the liquid cooling plate is connected to the liquid outlet branch pipe.

[0005] In a liquid cooling system with liquid inlet from bottom to top, if all inlet branches have the same diameter, the coolant flow rate in the upper inlet branch will be less than that in the lower inlet branch. This will lead to uneven heat dissipation across the energy storage cabinet. The difference in flow rate and heat dissipation effect is greatest between the bottom and top inlet branches, especially. The liquid cooling pipeline disclosed in this application includes five inlet branches and one outlet branch. The diameters of the five inlet branches are, in order, a first diameter, a second diameter, a second diameter, a second diameter, and a third diameter, where the first diameter < the second diameter < the third diameter. The branch with the largest third diameter ensures a large flow rate into the top inlet branch, providing a basis for subsequent distribution. The three branches with the second diameter play a regulating role in flow distribution. Compared to the branches with the third diameter, their flow rate is reduced, but it still meets the heat dissipation requirements of the energy storage cabinet area. The branch with the first diameter supplies flow to the bottom inlet branch. Through this differentiated pipe diameter design, the coolant is initially rationally distributed when it enters the energy storage cabinet, improving the overall heat dissipation effect of the device.

[0006] Furthermore, the first pipe diameter is 10cm, the second pipe diameter is 12cm, and the third pipe diameter is 14cm. For a liquid cooling pipeline with five layers of inlet branches, in actual use, the above design allows each layer of inlet branches to achieve the most similar heat dissipation effect.

[0007] Furthermore, the diameter of the outlet branch pipe is the third diameter. Setting the diameter of the outlet branch pipe to the largest third diameter is beneficial for the coolant to flow back smoothly after completing its heat dissipation task, avoiding problems such as poor backflow or uneven pressure caused by inconsistent outlet branch pipe diameters, and ensuring the circulation stability of the entire liquid cooling pipeline.

[0008] Furthermore, a pipe clamp is provided on the main inlet pipe, and at least one pipe clamp is provided between every two adjacent inlet branch pipes; The main outlet pipe is equipped with a pipe clamp, and at least one pipe clamp is provided between every two adjacent outlet branch pipes.

[0009] The inlet and outlet main pipes are fixed by the pipe clamps to prevent pipe displacement caused by pressure fluctuations, mechanical vibrations or external impacts, thereby reducing the risk of loose connections and coolant leakage.

[0010] Furthermore, the main inlet pipe is provided with second connection ports at intervals along its length, and the inlet branch pipe is connected to the second connection ports via quick connectors; The main liquid outlet pipe has a third connection port spaced at intervals along its length, and the branch liquid outlet pipe is connected to the third connection port via a quick connector. This connection facilitates the disassembly, assembly, and maintenance of the liquid cooling pipeline.

[0011] Furthermore, the diameters of both the inlet and outlet main pipes are greater than or equal to the third pipe diameter.

[0012] Furthermore, drain valves are installed on both the inlet and outlet main pipes. In low-temperature environments or during long-term shutdowns, the coolant in the pipes is completely drained through the drain valves to prevent residual liquid from freezing and expanding, which could cause the pipes to rupture.

[0013] A liquid cooling system using the above-mentioned liquid cooling pipeline includes a liquid cooling unit, wherein the liquid outlet of the liquid cooling unit is connected to a first connection port of the liquid inlet main pipe, and the liquid return port of the liquid cooling unit is connected to a first connection port of the liquid outlet main pipe.

[0014] Furthermore, this includes at least two of the aforementioned liquid cooling lines.

[0015] An energy storage cabinet that uses the above-mentioned liquid cooling system.

[0016] Based on the above technical solution, the beneficial effects of this utility model are as follows: The liquid cooling pipeline disclosed in this application includes five inlet branches and one outlet branch. The diameters of the five inlet branches are, in order, a first diameter, a second diameter, a second diameter, a second diameter, and a third diameter, with the first diameter < the second diameter < the third diameter. The branch with the largest third diameter ensures that the uppermost inlet branch has a large flow rate, providing a basis for subsequent distribution. The three branches with the second diameter play a regulating role in flow distribution. Compared with the branch with the third diameter, its flow rate is reduced, but it can still meet the heat dissipation requirements of the energy storage cabinet area. The branch with the first diameter supplies flow to the bottommost inlet branch. Through this differentiated pipe diameter design, the coolant is initially rationally distributed when it enters the energy storage cabinet, improving the overall heat dissipation effect of the device. The reasonable flow distribution in this application ensures that the temperatures of the components inside the energy storage cabinet are closer, avoiding local overheating, thereby improving the overall heat dissipation efficiency of the energy storage cabinet, ensuring the stable operation of the energy storage equipment, and extending the service life of the equipment.

[0017] To make the above and other objects, features and advantages of this utility model more apparent and understandable, preferred embodiments are described below in detail with reference to the accompanying drawings. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a schematic diagram of the liquid cooling pipeline in an embodiment of this utility model; Figure 2 This is a schematic diagram of the installation and connection structure of the liquid cooling pipeline in an embodiment of this utility model.

[0020] The reference numerals in the above attached figures are as follows: 1. Main inlet pipe; 2. Branch inlet pipe; 3. Main outlet pipe; 4. Branch outlet pipe; 5. Drain valve; 6. Pipe clamp; 7. Quick coupling; 8. Liquid cooling unit. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0022] It should be noted that in the description of this utility model, the terms "first," "second," etc., are used only for descriptive purposes and to distinguish similar objects; there is no order between them, nor should they be construed as indicating or implying relative importance. Furthermore, in the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0023] Example: This example discloses a liquid cooling system, including: The liquid cooling unit 8 and liquid cooling pipelines are core components of the thermal management system for energy storage and high-power equipment. They primarily achieve precise temperature control through liquid circulation. Their core function is to absorb the heat generated by the equipment through refrigerant circulation (such as ethylene glycol solution), controlling the temperature difference between the battery cells / chips within ±2℃ to ensure system safety and lifespan.

[0024] like Figure 1As shown, the liquid cooling pipeline includes a main inlet pipe 1 connected to the liquid outlet of the liquid cooling unit 8. The main inlet pipe 1 has a first end and a second end, and the first end of the main inlet pipe 1 is provided with a first connection port for connecting to the liquid cooling unit 8. The main inlet pipe 1 is made of metal. In this application, the main inlet pipe 1 uses a stainless steel pipe, which has the advantages of strong corrosion resistance (especially for ethylene glycol coolant) and a working pressure ≥20 Bar, making it suitable for high temperature and high vibration environments.

[0025] In some feasible embodiments, the liquid inlet main pipe 1 can also be made of materials such as aluminum alloy pipe or copper pipe.

[0026] The liquid inlet main pipe 1 has five second connection ports evenly spaced along its length, such as... Figure 2 As shown, each of the second connection ports is connected to a liquid inlet branch pipe 2 via a quick connector 7. The quick connector 7 facilitates the disassembly, assembly, and maintenance of the liquid cooling pipeline. The liquid inlet branch pipe 2 is made of flexible tubing such as nylon or silicone. The five liquid inlet branch pipes 2 are arranged at intervals along the length of the main liquid inlet pipe 1. The liquid inlet branch pipe 2 closest to the first end of the main liquid inlet pipe 1 has a first diameter, the liquid inlet branch pipe 2 closest to the second end of the main liquid inlet pipe 1 has a third diameter, and the remaining liquid inlet branch pipes 2 have a second diameter, wherein the first diameter < the second diameter < the third diameter. The diameter of the main liquid inlet pipe 1 is greater than or equal to the third diameter.

[0027] In some feasible embodiments, the diameters of each inlet branch pipe 2, from the first end to the second end of the main liquid inlet pipe 1, are 10cm, 12cm, 12cm, 12cm, and 14cm, respectively. It should be noted that the liquid cooling system of this application has liquid inlet from bottom to top; that is, the diameter of the bottommost inlet branch pipe 2 is 10cm, the diameter of the topmost inlet branch pipe 2 is 14cm, and the diameters of the three middle inlet branch pipes 2 are all 12cm.

[0028] In a liquid cooling pipeline with liquid entering from the bottom up, if all inlet branch pipes 2 have the same diameter, the coolant flow rate in the upper inlet branch pipe 2 will be less than that in the lower inlet branch pipe. This will lead to uneven heat dissipation among the layers of the equipment being cooled. In particular, the difference in flow rate between the bottommost inlet branch pipe 2 and the topmost inlet branch pipe 2 is the greatest, resulting in the greatest difference in heat dissipation effect. The liquid cooling pipeline disclosed in this application includes five inlet branches and one outlet branch. The diameters of the five inlet branches, from the first end to the second end of the main inlet pipe 1, are 10cm, 12cm, 12cm, 12cm, and 14cm respectively. The 14cm diameter branch ensures a large flow rate into the uppermost inlet branch 2, providing a basis for subsequent distribution. The three 12cm diameter branches play a regulating role in flow distribution. Compared with the 14cm diameter branches, their flow rate is reduced, but it can still meet the heat dissipation requirements of the energy storage cabinet area. The 10cm diameter branch supplies flow to the bottommost inlet branch 2. Through this differentiated pipe diameter design, the flow distribution in each inlet branch 2 can be more reasonable, improving the overall heat dissipation effect of the device.

[0029] The liquid cooling pipeline also includes a main outlet pipe 3 connected to the return port of the liquid cooling unit 8. The main outlet pipe 3 has a first end and a second end, and the first end of the main outlet pipe 3 is provided with a first connection port for connecting to the liquid cooling unit 8. The main outlet pipe 3 is made of metal. In this application, the main outlet pipe 3 uses a stainless steel pipe, which has the advantages of strong corrosion resistance (especially for ethylene glycol coolant) and a working pressure ≥20 Bar, making it suitable for high temperature and high vibration environments.

[0030] In some feasible embodiments, the liquid outlet main pipe 3 can also be made of materials such as aluminum alloy pipe or copper pipe.

[0031] The main outlet pipe 3 has five third connection ports evenly spaced along its length. Each third connection port is connected to an outlet branch pipe 4 via a quick connector 7. The quick connector 7 facilitates the disassembly, assembly, and maintenance of the liquid cooling pipeline. The outlet branch pipe 4 is made of flexible tubing such as nylon or silicone. Each outlet branch pipe 4 corresponds one-to-one with the inlet branch pipe 2. In this application, the diameter of each outlet branch pipe 4 is 14cm. Because the maximum diameter of the inlet branch pipe 2 is 14cm, uniformly setting the diameter of the outlet branch pipes 4 to 14cm facilitates smooth return of the coolant after completing its heat dissipation task, avoiding problems such as poor return flow or uneven pressure caused by inconsistent outlet branch pipe diameters, and ensuring the circulation stability of the entire liquid cooling pipeline.

[0032] In some feasible embodiments, the diameter of the outlet branch pipe 4 can be set to be larger than the aforementioned third pipe diameter.

[0033] The liquid cooling pipeline also includes a liquid cooling plate, which is disposed between the inlet branch pipe 2 and the outlet branch pipe 4. The liquid cooling plate has an inlet and an outlet, the inlet of which is connected to the inlet branch pipe 2, and the outlet of which is connected to the outlet branch pipe 4.

[0034] In some feasible embodiments, a drain valve 5 is provided on the inlet pipe 1 and the outlet pipe 3 respectively. In low-temperature environments or during long-term shutdowns, the coolant in the pipes is completely drained through the drain valve 5 to prevent residual liquid from freezing and expanding, which could cause the pipes to rupture.

[0035] When installing the liquid cooling system into the energy storage cabinet, the main inlet pipe 1 is fixed to the energy storage cabinet using pipe clamps 6. At least one pipe clamp 6 is installed between every two adjacent inlet branch pipes 2, and the main outlet pipe 3 is fixed to the energy storage cabinet via the pipe clamps 6. At least one pipe clamp 6 is installed between every two adjacent outlet branch pipes 4. The pipe clamps 6 secure the main inlet pipe 1 and the main outlet pipe 4 to prevent pipe displacement due to pressure fluctuations, mechanical vibration, or external impacts, thereby reducing the risk of loose connections and coolant leakage.

[0036] In some feasible embodiments, the liquid cooling unit 8 is connected to at least one of the liquid cooling lines.

[0037] This application also discloses an energy storage cabinet using the above-described liquid cooling system.

[0038] From the first end to the second end of the main liquid inlet pipe 1, each liquid inlet branch pipe 2 and liquid outlet branch pipe 4 is connected and named as the first layer, second layer, third layer, fourth layer, and fifth layer. The test results of the above liquid cooling pipeline are as follows: Wherein, the outlet mass flow rate represents the mass flow rate passing through the outlet cross section per unit time; Deviation represents the ratio of actual flow to average flow, referring to the difference between the actual flow and the expected flow. The inlet mass flow rate represents the mass flow rate passing through the inlet cross-section per unit time. Inlet pressure represents the pressure of the fluid entering the liquid cooling pipeline; The outlet pressure represents the pressure of the fluid at the outlet of the liquid cooling line; Pressure drop represents the decrease in pressure caused by energy loss when a fluid flows in a pipe.

[0039] Comparative Example 1: The diameter of each inlet branch pipe 2 and outlet branch pipe 4 is 14cm. The test results are as follows: Comparative Example 2: Assume that the diameters of the inlet branch pipes 2 from the first end to the second end of the main inlet pipe 1 are 10cm, 12cm, 12cm, 12cm, and 14cm respectively, and the diameters of the outlet branch pipes 4 from the first end to the second end of the main outlet pipe 3 are 10cm, 12cm, 12cm, 12cm, and 14cm respectively. The test results are as follows: Comparative Example 3: Assume that the diameters of the inlet branch pipes 2 from the first end to the second end of the main inlet pipe 1 are 10cm, 10cm, 10cm, 10cm, and 14cm respectively, and the diameter of the outlet branch pipes 4 is 14cm. The test results are as follows: As can be seen from the above comparative examples, the liquid cooling pipeline disclosed in this scheme is optimal, with a uniform proportion of each flow channel and a small pressure drop.

[0040] This utility model uses specific embodiments to illustrate the principle and implementation of the utility model. The above description of the embodiments is only for the purpose of helping to understand the method and core idea of ​​the utility model. At the same time, for those skilled in the art, there will be changes in the specific implementation and application scope based on the idea of ​​the utility model. Therefore, the content of this specification should not be construed as a limitation of the utility model.

Claims

1. A liquid cooling line, characterized by, include: The liquid inlet main pipe has a first end and a second end, and the first end of the liquid inlet main pipe is provided with a first connection port that can be connected to a liquid cooling unit; The liquid inlet branch pipe is connected to the liquid inlet main pipe. There are at least three liquid inlet branch pipes, which are arranged at intervals along the length of the liquid inlet main pipe. The liquid inlet branch pipe closest to the first end of the liquid inlet main pipe has a first pipe diameter, the liquid inlet branch pipe closest to the second end of the liquid inlet main pipe has a third pipe diameter, and the remaining liquid inlet branch pipes have a second pipe diameter, wherein the first pipe diameter < the second pipe diameter < the third pipe diameter. A liquid outlet main pipe, one end of which is provided with a first connection port that can be connected to a liquid cooling unit; The liquid outlet branch pipe is connected to the liquid outlet main pipe, and the liquid outlet branch pipe and the liquid inlet branch pipe are respectively arranged, and each of the liquid outlet branch pipes is arranged at intervals along the length direction of the liquid outlet main pipe. A liquid cooling plate having an inlet and an outlet, wherein the inlet of the liquid cooling plate is connected to the liquid inlet branch pipe, and the outlet of the liquid cooling plate is connected to the liquid outlet branch pipe.

2. The liquid cooling tube of claim 1, wherein, It includes five inlet branch pipes, the first pipe having a diameter of 10cm, the second pipe having a diameter of 12cm, and the third pipe having a diameter of 14cm.

3. The liquid cooling tube according to claim 1 or 2, wherein The diameter of the outlet branch pipe is the third diameter.

4. The liquid cooling tube of claim 1, wherein, The main inlet pipe is equipped with a pipe clamp, and at least one pipe clamp is provided between every two adjacent inlet branch pipes. The main outlet pipe is equipped with a pipe clamp, and at least one pipe clamp is provided between every two adjacent outlet branch pipes.

5. The liquid cooling tube of claim 1, wherein, The main inlet pipe is provided with second connection ports at intervals along its length, and the branch pipe is connected to the second connection ports via quick connectors; The main outlet pipe is provided with a third connection port at intervals along its length, and the outlet branch pipe is connected to the third connection port through a quick connector.

6. The liquid cooling tube of claim 1, wherein, The diameters of both the inlet and outlet main pipes are greater than or equal to the third pipe diameter.

7. The liquid cooling pipeline as described in claim 1, characterized in that, The inlet pipe and outlet pipe are each equipped with a drain valve.

8. A liquid cooling system using the liquid cooling pipe according to any one of claims 1 to 7, characterized by It includes a liquid cooling unit, wherein the liquid outlet of the liquid cooling unit is connected to the first connection port of the liquid inlet main pipe, and the liquid return port of the liquid cooling unit is connected to the first connection port of the liquid outlet main pipe.

9. The liquid cooling system of claim 8, wherein, This includes at least two of the aforementioned liquid cooling pipes.

10. An energy storage cabinet characterized by, The energy storage cabinet uses the liquid cooling system described in claim 9.

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