Fluid collection system and liquid cooling system

Abstract

To provide a collector system which simplifies complexity of a structure caused by flow rate distribution while improving a uniform heat exchange effect of a liquid cooling plate, and a liquid cooling system.SOLUTION: A collector system includes at least two collectors, and the collector includes a collector case 1 in which a liquid cavity 11 in which a liquid flows is provided and an opened collector connection port 12 is provided on one side of the liquid cavity 11, and a collector main channel 2 which is provided while penetrating the collector case 1, the collector main channels 2 of the at least two collectors being connected in series with each other. A flow rate hole 3 for communicating the collector main channel 2 and the liquid cavity 11 is provided between the liquid cavity 11 and the collector main channel 2, and hole diameters of the flow rate holes 3 of the at least two collectors are different.SELECTED DRAWING: Figure 4

Description

Technical Field

[0001] This application claims the priority of a Chinese patent application with the application number 2024206178276, filed with the China National Intellectual Property Administration on March 27, 2024, and all the contents of this application are incorporated herein by reference. This application relates to the technical field of fluid collection and particularly relates to fluid collection systems and liquid cooling systems.

Background Art

[0002] With the rapid development of electronic devices, the problem of heat dissipation has become increasingly prominent, and the need for heat dissipation is particularly urgent in battery packs. As an efficient heat dissipation method, liquid cooling technology is widely used in electronic devices. However, the flow rate distribution is an important aspect in the design of the liquid cooling system of the battery pack.

[0003] Conventional liquid cooling plates fluid collection usually include liquid cavities and the inlets and outlets of the main channels used to control the liquid supply and drainage of the liquid cavities. This design adjusts the flow rate distribution at the inlets and outlets of each main channel of the liquid cooling system through the aperture diameter and the number of holes of the main pipe.

Summary of the Invention

Problems to be Solved by the Invention

[0004] First, the design of the main pipe is complex, and accurate calculations of the pipe diameter and length are required to balance the flow rate distribution. As a result, not only does the design difficulty increase, but a lot of space is occupied, which is not helpful for the compact design of the liquid cooling system.

[0005] Second, due to the existence of multiple branch paths and pipelines in the main pipe, the structure of the liquid cooling system becomes complex, and the difficulty of manufacturing and assembly increases. In addition, the complex pipelines also increase the risk of coolant leakage, posing risks to the safety and stability of electronic devices. [Means for solving the problem]

[0006] In the first aspect, the present application is: at least two fluid collection Including the above fluid collection teeth, A liquid cavity through which liquid flows is provided inside, and it has an opening. fluid collection The connection port is provided on one side of the liquid cavity. fluid collection The case and The aforementioned fluid collection A hole made through the case fluid collection Main channel, and at least two of the above fluid collection The aforementioned fluid collection The main channels are connected in series with each other. fluid collection Main Channel and, The liquid cavity and the fluid collection Between the main channel and the other channel, fluid collection A flow hole is provided to connect the main channel and the liquid cavity. at least two of the above fluid collection The diameter of the flow holes is different. fluid collection We provide the system.

[0007] In the second aspect, the present application is: A liquid-cooled main supply pipe, a liquid-cooled main drain pipe, and one or more liquid-cooled plates, fluid collection The system includes, the liquid cooling plates are stacked sequentially with spacing between them, and each end of the liquid cooling plates is one fluid collection of fluid collection The main liquid-cooled feed pipe is sealed and connected to the connection port, and is located at one end of one or more stacked liquid-cooled plates. fluid collection Communicating with the main channel, the liquid-cooled main drain pipe is located at the other end of one or more stacked liquid-cooled plates. fluid collection Communicating with the main channel, the further away from the liquid-cooled main feed pipe, the fluid collection The present invention provides a liquid cooling system in which the diameter of the flow holes is increased. [Effects of the Invention]

[0008] The beneficial effects are as follows. 1. By combining the liquid cavity, fluid collection main channel, and flow holes, fluid collection there is no need to adjust the flow velocity and flow rate from the outside, the connection structure is simplified, fluid collection many branch paths and pipelines existing in the system are reduced, and the complexity of the pipelines is alleviated. 2. Due to the design of the flow holes, fluid collection it becomes easier to change the hole diameter compared to changing the hole diameter of the main channel, thereby fluid collection avoiding the problem that the hole diameters of the main channels do not match and the compatibility during assembly is low. Also, due to the design of the flow holes, fluid collection the whole system becomes more compact and the occupied space becomes smaller. 3. fluid collection By adjusting the hole diameter of each fluid collection flow hole in the system, the flow velocity and flow rate distribution of the liquid in each fluid collection can be flexibly changed, fluid collection and the flow rate distribution is more accurately achieved due to the direct relationship between the hole diameter of the flow hole and the flow velocity, compared to controlling the flow velocity by changing the hole diameter and length of the main channel. 4. Due to the design of the flow holes, fluid collection the potential leakage points of the system are reduced, and compared with the complex design of the connection path, this fluid collection system has a simple structure and a reduced leakage risk. 5. By adjusting the hole diameter of the flow hole, the flow velocity of the liquid flowing from the fluid collection main channel to the fluid collection connection port can be effectively controlled. Also, according to Bernoulli's equation, since the change in flow velocity also affects the change in pressure, the pressure distribution can be indirectly controlled by adjusting the flow hole.

Brief Description of the Drawings

[0009] [Figure 1] It is a schematic diagram of the three-dimensional structure of the current collector system according to the embodiment of the present application. [Figure 2]It is a schematic diagram of the three-dimensional structure of the current collector of the embodiment of the present application. [Figure 3] It is a schematic diagram of the structure on one side of the current collector connection port of the embodiment of the present application. [Figure 4] It is a schematic diagram of the cross-sectional structure of the current collector of the embodiment of the present application.

Embodiment for Carrying out the Invention

[0010] Example 1 of the present application is as shown in FIGS. 1 to 4, fluid collection A system is disclosed. This fluid collection system includes at least two fluid collection and the fluid collection includes fluid collection case 1 and fluid collection main channel 2. The fluid collection main channel 2 vertically penetrates the fluid collection case 1. A liquid cavity 11 through which liquid flows is provided in the fluid collection case 1. On one side of the liquid cavity 11, that is, fluid collection on one side of the case 1, an open fluid collection connection port 12 is provided and is used to seal the communication with the liquid cooling plate. The other side of the liquid cavity 11 communicates with the fluid collection main channel 2 through a flow hole 3. At both ends of the fluid collection main channel 2, there are a main channel inlet 21 and a main channel outlet 22. The main channel inlet 21 is used to inject a coolant into the liquid cavity 11, and the main channel outlet 22 is used for the coolant in the liquid cavity 11 to flow out. In at least two fluid collection , the fluid collection main channel inlet 21 communicates with the fluid collection main channel outlet 22 of the adjacent fluid collection and thus at least two fluid collection are connected in series in sequence. The aperture diameter of the flow hole 3 is smaller than that of the main channel inlet 21, and the aperture diameters of the flow holes 3 of at least two fluid collectionBy adjusting the diameter of the internal flow holes 3, the flow velocity and pressure flowing from the flow holes 3 into the liquid cavity 11 are adjusted. fluid collection For each position, fluid collection By changing the diameter of the flow holes 3 inside, each fluid collection So fluid collection The flow rate of the liquid from the connection port 12 is kept constant.

[0011] In this embodiment 1, the diameter of the flow hole 3 is in the range of 0.5 mm to 5 mm, thereby allowing for precise control of the amount of fluid passing through. By selecting an appropriate diameter according to the actual needs, it is possible to ensure that the fluid flow rate meets the predetermined requirements and achieve precise flow rate control. The main channel inlet 21 and the main channel outlet 22 are provided coaxially, and between them is fluid collection The diameter of the main channel 2 is in the range of 6 mm to 14 mm. By designing the main channel inlet 21 and the main channel outlet 22 to be coaxial, the fluid maintains a stable flow direction within the main channel, reducing eddies and turbulence caused by changes in direction, contributing to reduced energy loss and improved fluid transport efficiency. fluid collection The size of main channel 2 facilitates its processing, manufacturing, integration, and installation. fluid collection In Case 1, the liquid cavity 11, main channel, and flow port 3 are combined in different ways. fluid collection By providing flow holes 3 with different diameters within case 1, the number of liquid cooling branch lines and pipes for adjusting the flow rate of the liquid cooling system is reduced, thereby simplifying the structural complexity caused by the flow rate distribution while enhancing the uniform heat exchange effect of the liquid cooling plate.

[0012] In some embodiments, the flow rate distribution is fluid collectionTo adjust the flow rate, a transition cavity 4 may be provided between the flow hole 3 and the liquid cavity 11, and a stepped portion 5 that transitions in a stepped manner may be provided between the transition cavity 4 and the liquid cavity 11, the liquid flow area of ​​the flow hole 3 is smaller than the liquid flow area of ​​the transition cavity 4, the liquid flow area of ​​the transition cavity 4 is smaller than the liquid flow area of ​​the liquid cavity 11, a flow rate distribution rib 43 is further provided inside the transition cavity 4, the flow rate distribution rib 43 divides the transition cavity 4 into a flow rate adjustment cavity 41 and an empty cavity 42, similarly, the liquid flow area of ​​the flow hole 3 is smaller than the liquid flow area of ​​the flow rate adjustment cavity 41, and the liquid flow area of ​​the flow rate adjustment cavity 41 is smaller than the liquid flow area of ​​the liquid cavity 11. fluid collection Therefore, the positions of at least two flow distribution ribs are different, which solves the problem of liquid flow distribution at various flow velocities, and the flow velocity changes when the liquid flows through areas with different flow areas. Since the flow area of ​​flow hole 3 is the smallest, the flow velocity of the liquid flowing through flow hole 3 is relatively high, while in liquid cavity 11 and flow adjustment cavity 41, the flow area is large and the flow velocity is relatively low, which is advantageous in reducing pressure loss and energy consumption caused by excessively high flow velocities.

[0013] One side of the flow rate adjustment cavity 41 communicates with the flow hole 3, and the other side of the flow rate adjustment cavity 41 communicates with the liquid cavity 11. By designing the flow rate adjustment cavity 41, the flow velocity of the liquid can be adjusted or controlled. By rationally designing the shape and size of the flow rate adjustment cavity 41, the flow velocity distribution of the liquid flowing in a certain area can be optimized, and excess or deficiency of the flow velocity can be avoided. By providing the stepped portion 5, fluid collection The internal structure can be streamlined, making processing easier. Furthermore, by gradually reducing the flow area, the flow velocity and flow rate distribution can be controlled more flexibly. fluid collectionThe performance can be improved. In this embodiment 1, the side wall of the flow rate adjustment cavity 41 that communicates with the flow hole 3 has a width of the side wall that is greater than or equal to the diameter of the flow hole 3, and a length of the side wall that is between 10 mm and 50 mm, providing sufficient space and time for the liquid to flow and gradually adjusting the flow velocity in the flow rate adjustment cavity 41.

[0014] Furthermore, the flow distribution rib 43 has a thickness of 1 mm to 5 mm that separates the flow adjustment cavity 41 and the empty cavity 42. The appropriate thickness of the flow distribution rib 43 allows it to withstand the predetermined liquid pressure and impact force without being excessively bulky or taking up too much space. Therefore, fluid collection The structure becomes more stable, reducing performance degradation due to structural deformation and fracture.

[0015] fluid collection To easily improve the stability and sealing of the connection between the connection port 12 and the end of the liquid cooling plate, from the surface connected to the flow rate adjustment cavity 41 of the liquid cavity 11 fluid collection The distance to the surface where the connection port 12 is located is controlled to be within the range of 3 mm to 7 mm. In this case, fluid collection Its volume is not too large, and a mounting position can be secured, which is advantageous for assembly with the liquid cooling plate, and for improving sealing performance and stability during assembly.

[0016] This application also relates to a liquid cooling system, the liquid cooling system comprising a main liquid cooling supply pipe, a main liquid cooling drain pipe, and one or more liquid cooling plates. fluid collection The system includes, the liquid cooling plates are stacked sequentially with spacing between them, and each end of the liquid cooling plates is one fluid collection of fluid collection One or more are sealed and connected to the connection port 12. fluid collection Then, the above fluid collection The main channel entrance 21 is adjacent fluid collection The liquid-cooled main feed pipe is connected to the main channel outlet 22, and is located at one end of one or more stacked liquid-cooled plates. fluid collectionCommunicating with the main channel 2, the liquid-cooled main drain pipe is located at the other end of one or more stacked liquid-cooled plates. fluid collection The liquid-cooled plate that communicates with the main channel 2 and is close to the liquid-cooled main supply pipe and liquid-cooled main drain pipe is the tip, and the liquid-cooled plate that is away from the liquid-cooled main supply pipe and liquid-cooled main drain pipe is the end. Therefore, the liquid-cooled main supply pipe is located at one end of the liquid-cooled plate at the tip. fluid collection The liquid-cooled main drain pipe is connected to the main channel inlet 21, and is located at the other end of the liquid-cooled plate at its tip. fluid collection It is connected to the main channel outlet 22 and is located at both ends of the terminal liquid cooling plate. fluid collection Next, the main channel outlet 22 is blocked. The further away from the liquid-cooled main supply pipe and liquid-cooled main drain pipe, the fluid collection The diameter of the flow hole 3 increases. That is, the liquid cooling plate is connected from tip to end. fluid collection Then, the diameter of the flow hole 3 becomes larger. The liquid cooling system can effectively transfer heat from the heat source to the coolant. Also, away from the main feed pipe fluid collection The smaller the diameter of the flow port 3 in Case 1, the more precisely the flow rate can be controlled in the liquid cooling system. In such a design, the coolant is uniformly distributed at various locations, avoiding variations in cooling effect due to uneven flow rates.

[0017] In some embodiments, different liquid cooling systems are used. fluid collection The effect of changing the flow velocity can also be obtained by changing the number of flow holes 3 instead of changing the diameter of the flow holes 3 inside.

[0018] Based on the above liquid cooling system, fluid collection The operating principle will be explained in detail. When the coolant in the main liquid-cooled feed pipe flows into the liquid-cooled plate at the tip, there is almost no loss of coolant at the main channel inlet 21 at the end of the liquid-cooled plate. Therefore, the pressure of the coolant increases and the flow velocity increases. For this reason, the liquid-cooled plate at the tip fluid collectionThe diameter of the flow hole 3 is 0.5 mm. As a result, the flow velocity to the liquid cooling plate is increased, but the flow rate is reduced. On the other hand, when the coolant in the main liquid cooling supply pipe flows into the liquid cooling plate at the end, the coolant in the main channel inlet 21 at the end of the liquid cooling plate fluid collection The frictional force caused by the length of the main channel 2 itself affects the flow, resulting in a decrease in coolant pressure and a slower flow velocity. For this reason, the diameter of the end liquid cooling plate and flow hole 3 is 5 mm. Although the flow velocity to the liquid cooling plate is slow, the total flow rate is large, and as a result, the end of the liquid cooling plate at the tip fluid collection The coolant inside and at the end of the liquid cooling plate fluid collection The total flow rate and velocity of the internal coolant are roughly equal, thereby ensuring that the heat exchange effect of all liquid-cooled plates is consistent. This design compensates for the decrease in flow velocity due to frictional resistance within the liquid-cooling system and ensures that an appropriate amount of coolant is supplied to all liquid-cooled plates.

[0019] Furthermore, between the liquid cooling plates at the tip and the end fluid collection In this case, the diameter of the flow holes 3 may increase with each layer, and the amount of increase may be adjusted according to the number of battery rows. Similarly, if there are many battery rows, the diameter of the flow holes 3 may be selected from a range of less than 0.5 mm to more than 5 mm, but this embodiment is not particularly limited.

[0020] In summary, by this application fluid collection The system and liquid cooling system have the following technical effects. 1. Liquid cavity 11, fluid collection By combining the main channel 2 and the flow port 3, fluid collection There is no need to adjust the flow velocity and flow rate from the outside, and the connection structure is simplified. fluid collection The number of branches and conduits in the system is reduced, lessening the complexity of the network. 2. Due to the design of the flow hole 3, fluid collection The pore size can be changed more easily compared to changing the pore size of main channel 2, thereby, fluid collection The problem of incompatible hole diameters in main channel 2, which would lead to poor compatibility during assembly, is avoided. Furthermore, the design of the flow hole 3 allows for... fluid collection The entire system becomes more compact and occupies less space. 3. fluid collection Each fluid collection By adjusting the diameter of the flow holes 3, each fluid collection The flow velocity and flow rate distribution of the liquid inside can be flexibly changed. fluid collection Rather than controlling the flow velocity by changing the diameter and length of the main channel 2, the flow distribution can be more accurately determined by the direct relationship between the diameter of the flow holes 3 and the flow velocity. 4. Due to the design of the flow hole 3, fluid collection The system's potential leakage points are reduced, and compared to the complex design of the connection paths, this fluid collection The system has a simple structure and reduces the risk of leakage. 5. By adjusting the diameter of the flow hole 3, the liquid fluid collection From Main Channel 2 fluid collection The flow velocity at the connection port 12 can be effectively controlled. Furthermore, according to Bernoulli's equation, changes in flow velocity also affect changes in pressure, so the pressure distribution can be indirectly controlled by adjusting the flow port 3. [Explanation of Symbols]

[0021] 1 fluid collection case 11 Liquid Cavity 12 fluid collection Connection port 2 fluid collection Main Channel 21 Main Channel Entrance 22 Main channel exit 3 flow hole 4. Transition Cavity 41 Flow control cavity 42 empty cavities 43 Flow distribution ribs 5 Stepped section

Claims

1. A fluid collecting system comprising at least two fluids, wherein the fluids are A fluid collection case (1) has a liquid cavity (11) through which a liquid flows, and an open fluid collection connection port (12) is provided on one side of the liquid cavity (11), A fluid collecting main channel (2) is provided penetrating the fluid collecting case (1), and at least two of the fluid collecting main channels (2) are connected in series with each other, including a fluid collecting main channel (2), Between the liquid cavity (11) and the fluid collecting main channel (2), a flow hole (3) is provided to connect the fluid collecting main channel (2) and the liquid cavity (11). A fluid collecting system in which the diameters of the flow holes (3) of at least two of the fluid collecting systems are different.

2. A fluid collection system according to claim 1, wherein a transition cavity (4) is provided between the flow hole (3) and the liquid cavity (11), a stepped portion (5) is provided between the transition cavity (4) and the liquid cavity (11) that transitions in a stepped manner, the liquid flow area of ​​the flow hole (3) is smaller than the liquid flow area of ​​the transition cavity (4), and the liquid flow area of ​​the transition cavity (4) is smaller than the liquid flow area of ​​the liquid cavity (11).

3. The fluid collection system according to claim 2, wherein a flow rate distribution rib (43) is provided in the transition cavity (4), the flow rate distribution rib (43) divides the transition cavity (4) into a flow rate adjustment cavity (41) and an empty cavity (42), one side of the flow rate adjustment cavity (41) communicates with the flow hole (3), the other side of the flow rate adjustment cavity (41) communicates with the liquid cavity (11), and in at least two of the fluid collection systems, the positions of at least two flow rate distribution ribs (43) are different.

4. The fluid collection system according to claim 3, wherein the liquid flow area of ​​the flow hole (3) is smaller than the liquid flow area of ​​the flow adjustment cavity (41), and the liquid flow area of ​​the flow adjustment cavity (41) is smaller than the liquid flow area of ​​the liquid cavity (11).

5. The fluid collection system according to claim 3, wherein the flow rate distribution rib (43) has a thickness of 1 mm to 5 mm that separates the flow rate adjustment cavity (41) and the empty cavity (42).

6. The fluid collection system according to claim 3, wherein the side wall of the flow rate adjustment cavity (41) on the side communicating with the flow hole (3) has a width equal to or greater than the diameter of the flow hole (3), and the length of the side wall is between 10 mm and 50 mm.

7. The fluid collection system according to claim 3, wherein the distance from the surface of the liquid cavity (11) connected to the flow rate adjustment cavity (41) to the surface where the fluid collection connection port (12) is located is 3 mm to 7 mm.

8. The fluid collection system according to claim 1, wherein the diameter of the flow hole (3) is in the range of 0.5 mm to 5 mm.

9. The fluid collecting system according to claim 1, wherein the diameter of the fluid collecting main channel (2) is in the range of 6 mm to 14 mm.

10. A liquid cooling system comprising a liquid cooling main supply pipe, a liquid cooling main drain pipe, one or more liquid cooling plates, and the fluid collecting system according to claims 1 to 9, wherein the liquid cooling plates are stacked sequentially with spacing between them, and both ends of the liquid cooling plates are sealed and connected to the fluid collecting connection port (12) of one fluid collecting device, the liquid cooling main supply pipe communicates with a fluid collecting main channel (2) at one end of the stacked one or more liquid cooling plates, the liquid cooling main drain pipe communicates with a fluid collecting main channel (2) at the other end of the stacked one or more liquid cooling plates, and the diameter of the flow holes (3) of the fluid collecting device increases as it moves away from the liquid cooling main supply pipe.

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