Liquid cooling assembly, electronic equipment, control method and control system

Abstract

The invention discloses a liquid cooling assembly, electronic equipment, a control method and a control system, and relates to the technical field of liquid cooling equipment, the liquid cooling assembly comprises a plurality of heat exchange elements, a communication valve and a liquid inlet channel, and the flow of the liquid inlet channel is determined according to the sum of target flows of the heat exchange elements connected with the communication valve; corresponding cooling liquid is distributed to each function node according to actual heat dissipation requirements; and the flow of the cooling medium flowing to different heat exchange elements is accurately controlled through a communicating valve, so that high-heat parts are ensured to be fully cooled, meanwhile, low-heat parts are prevented from being excessively cooled, and cooling liquid is distributed in functional nodes according to needs. The problems of non-uniform flow distribution of the cooling medium and low heat dissipation efficiency caused by different function nodes and differential heat dissipation requirements in the function nodes in the prior art are solved.

Description

Technical Field

[0001] This application relates to the field of liquid cooling equipment technology, and in particular to a liquid cooling component, electronic equipment, control method and control system. Background Technology

[0002] Existing immersion liquid cooling systems typically distribute and control the coolant uniformly across the entire sealed tank. The temperature and flow rate of the cooling medium are uniformly regulated by the coolant distribution unit (CDU), which cannot independently adapt to the different real-time heat dissipation needs of each node. This "one-size-fits-all" control mode makes it difficult to achieve precise control of the coolant at each node, especially when the tank contains multiple nodes with different power consumptions, or when different nodes operate under dynamically changing load scenarios. This results in slow response times and low energy efficiency. Furthermore, for multi-processor servers such as AI servers, which contain multiple GPUs and CPUs with often uneven loads, the coolant cannot be distributed on demand within the nodes, making it difficult to target specific high-heat areas for cooling, potentially leading to localized overheating or overall energy waste.

[0003] Therefore, how to achieve on-demand distribution of cooling medium to different nodes and on-demand distribution within nodes is a technical problem that needs to be solved by those skilled in the art. Summary of the Invention

[0004] This application provides a liquid cooling component, electronic device, control method, and control system to at least solve the problem in the related art of uneven distribution of cooling medium flow and low heat dissipation efficiency caused by different nodes and the differentiated heat dissipation requirements within the nodes.

[0005] This application provides a liquid cooling assembly, including:

[0006] Multiple heat exchange elements are used to introduce the cooling medium;

[0007] A connecting valve includes an inlet valve and multiple outlet valves. The outlet valves are correspondingly provided with and connected to the heat exchange element. The connecting valve is used to adjust the flow rate of the outlet valves according to the target flow rate of the heat exchange element.

[0008] The liquid inlet channel is connected to the liquid inlet valve port. The liquid inlet channel is equipped with a liquid inlet valve, which is used to adjust the liquid inlet flow rate of the liquid inlet channel according to the sum of the target flow rates of the heat exchange elements connected to the connecting valve.

[0009] In some embodiments, the flow rate ratio between any two outlet valve ports is equal to the target flow rate ratio of the heat exchange elements connected to the two outlet valve ports respectively, and the target flow rate is proportional to the temperature of the heating element corresponding to the heat exchange element.

[0010] In some embodiments, the inlet flow rate is equal to the sum of the target flow rates of the heat exchange elements connected to the outlet valve.

[0011] In some embodiments, the communication valve includes:

[0012] The valve body is provided with the liquid inlet valve port and the liquid outlet valve port;

[0013] A valve core is rotatably disposed within the valve body and divides the valve body into multiple independent cavities, with each cavity communicating with a different outlet valve port.

[0014] A drive mechanism is provided, the output end of which is connected to the valve core. The valve core rotates within a preset angular displacement range to change the ratio of the communication area between different cavities and the liquid inlet valve port.

[0015] In some embodiments, the valve core includes multiple manifolds that extend radially outward from the axis of the valve body, and the extended ends of the manifolds slide in a seal with the inner wall of the valve body to divide the valve body into multiple cavities.

[0016] In some embodiments, there are two outlet valves and three manifolds, which divide the valve body into three cavities. When the surface of one of the manifolds coincides with the axis of the inlet valve, the cavities on both sides of the manifold have the same communication area as the inlet valve.

[0017] In some embodiments, when the cavities on both sides of the manifold have the same communication area as the inlet valve port, the angular displacement of the valve core is zero. The preset angular displacement range includes [-arcsin(d / 2R), +arcsin(d / 2R)], where d is the diameter of the inlet valve port and R is the radius of the valve body.

[0018] In some embodiments, within the preset angular displacement range, one cavity and one outlet valve port always maintain the maximum communication area, and / or, another cavity and another outlet valve port always maintain the maximum communication area;

[0019] Within the preset angular displacement range, the communication area between one cavity and the liquid inlet valve port and the communication area between the other cavity and the liquid inlet valve port are inversely proportional.

[0020] In some embodiments, there is at least one straight line passing through the diameter of the valve body, with the inlet valve port and the two outlet valve ports located on the same side of the straight line; in the circumferential direction of the valve body, the inlet valve port is located between the two outlet valve ports.

[0021] In some embodiments, the inlet valve port and the two outlet valve ports have the same diameter D, and the radius R of the valve body satisfies the following relationship with the diameter D:

[0022] arcsin(D / 2R)+arcsin(D / R)≤90°.

[0023] An electronic device includes a functional node and a liquid cooling component as described in any of the preceding claims;

[0024] The functional node has a cavity, and the heat exchange element is disposed in the cavity.

[0025] In some embodiments, different liquid outlet valve ports on the same connecting valve are connected to heat exchange elements in different functional nodes;

[0026] And / or,

[0027] Different outlet valve ports on the same connecting valve are connected to different heat exchange elements in the same functional node.

[0028] In some embodiments, the functional node includes one or more of a computing node, a switching node, a storage node, and a power supply node. The functional node includes a control module, which is used to calculate the target flow rate of the heat exchange element based on the temperature of the heating component inside the cavity, so as to control the flow rate of the liquid outlet valve and the liquid inlet valve.

[0029] In some embodiments, the heat exchange element includes a liquid outlet for injecting a cooling medium into the cavity.

[0030] In some embodiments, the liquid cooling assembly further includes a cooling medium distribution unit and a draining module. The cooling medium distribution unit includes a supply pipe and a return pipe. The inlet channel is connected to the supply pipe, and the return pipe has an outlet channel that is connected to the cavity. The outlet channel has an outlet valve. The draining module includes a drain pump and a drain pipe connected to the drain pump. The drain pipe has a drain channel that is connected to the cavity. The drain channel has a drain valve.

[0031] A control method for a liquid cooling assembly, applied to any of the liquid cooling assemblies described above, comprising:

[0032] Obtain the temperature of the heating component inside the functional node and the actual flow rate Q1 of the liquid inlet channel;

[0033] The target flow rate of each heat exchange element and the sum of the target flow rates of all heat exchange elements, Q2, are calculated based on the temperature of the heating element.

[0034] The flow rate of the inlet channel is adjusted based on the sum of the target flow rates Q2 and the actual flow rate Q1.

[0035] The flow rate at the outlet valve is adjusted according to the target flow rate of the heat exchange element.

[0036] In some embodiments, the step of adjusting the flow rate at the outlet valve port according to the target flow rate of the heat exchange element includes:

[0037] According to the angular displacement formula: Calculate the angular displacement θ; where d is the diameter of the inlet valve port, R is the radius of the valve body of the connecting valve, q1 is the target flow rate of one outlet valve port, and q2 is the target flow rate of the other outlet valve port.

[0038] Control the valve core of the connecting valve to rotate to angle θ.

[0039] A control system for a liquid cooling component, comprising:

[0040] The acquisition unit is used to acquire the temperature of the heating component inside the functional node and the actual flow rate Q1 of the liquid inlet channel;

[0041] The calculation unit is used to calculate the target flow rate of each heat exchange element and the sum of the target flow rates of all heat exchange elements, Q2, based on the temperature of the heating component.

[0042] The first adjustment unit is used to adjust the flow rate of the inlet valve based on the sum of the target flow rates Q2 and the actual flow rate Q1.

[0043] The second adjustment unit is used to adjust the flow rate at the outlet valve according to the target flow rate of the heat exchange element.

[0044] In some embodiments, the second adjustment unit is configured to adjust according to the angular displacement formula: Calculate the angular displacement θ; where d is the diameter of the inlet valve port, R is the radius of the valve body of the connecting valve, q1 is the target flow rate of one outlet valve port, and q2 is the target flow rate of the other outlet valve port.

[0045] A control method for an electronic device, applied to any of the electronic devices described above, the control method comprising:

[0046] When the control function node is powered off, the control inlet valve, outlet valve, and drain valve will close.

[0047] The cooling medium distribution unit is activated, and the cooling medium circulates in the supply and return pipes.

[0048] The inlet valves on the inlet channels corresponding to the multiple functional nodes are opened in a preset order, and the cooling medium enters the cavity of the functional node.

[0049] When the cooling medium in the cavity reaches the first preset liquid level, the outlet valve is opened, and the opening degree of the outlet valve is less than that of the inlet valve; when the cooling medium in the cavity reaches the second preset liquid level, the functional node is powered on.

[0050] A control method for an electronic device, applied to any of the electronic devices described above, the control method comprising:

[0051] When the control function node is powered off, the control inlet valve, outlet valve, and drain valve will close.

[0052] The drain valve and drain pump are opened, and the cooling medium in the cavity of the functional node enters the drain pipe through the drain channel;

[0053] When the cooling medium in the cavity reaches the first preset liquid level, the drain valve and the drain pump are controlled to close.

[0054] A control system for an electronic device, comprising:

[0055] The liquid level acquisition unit is used to acquire first preset liquid level information at the bottom and second preset liquid level information at the top of the cavity of the functional node, wherein the second preset liquid level is higher than the first preset liquid level.

[0056] The first adjustment unit is used to control the opening and closing of the cooling medium distribution unit, the inlet valve, the outlet valve, the drain valve, and the drain pump.

[0057] The beneficial effect of this application lies in determining the sum of the target flow rates of the heat exchange elements connected to the connecting valve based on the target flow rate of the heat exchange element, so that the flow rate of the liquid inlet channel equals the sum of the target flow rates. This allows each functional node to allocate the corresponding cooling medium according to actual heat dissipation needs. By determining the required cooling medium flow rate of the corresponding heat exchange element based on the temperature of different heat-generating components within the functional node, and by adjusting the cooling medium flow rate to different heat exchange elements using the connecting valve, the application ensures that high-heating components receive sufficient cooling while avoiding over-cooling of low-heating components, thus achieving on-demand allocation of the cooling medium within the functional node. This method not only improves the heat dissipation efficiency of the functional node but also optimizes energy consumption while ensuring equipment stability through adaptive flow rate adjustment. Attached Figure Description

[0058] To more clearly illustrate the embodiments of this application, the accompanying drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0059] Figure 1 A schematic diagram of a liquid cooling component provided in an embodiment of this application;

[0060] Figure 2 A schematic diagram of a control system for a liquid cooling assembly provided in an embodiment of this application;

[0061] Figure 3 This is a schematic diagram of the connecting valve structure provided in an embodiment of this application;

[0062] Figure 4 This is a schematic diagram of the angular displacement range of the connecting valve provided in an embodiment of this application;

[0063] Figure 5 This is a schematic diagram of the connecting valve in a first state according to an embodiment of this application;

[0064] Figure 6 This is a schematic diagram of the connecting valve in a second state provided in an embodiment of this application;

[0065] Figure 7 This is a schematic diagram of the connecting valve in a third state provided in an embodiment of this application;

[0066] Figure 8 This is a schematic diagram of the connecting valve in the fourth state provided in the embodiments of this application;

[0067] Figure 9 This is a diagram showing the relationship between the angular displacement of the connecting valve and the target flow rate, provided in an embodiment of this application.

[0068] Figure 10 A flowchart illustrating the control method for a liquid cooling assembly provided in an embodiment of this application;

[0069] Figure 11 A flowchart of a control method for an electronic device provided in an embodiment of this application;

[0070] Figure 12 A flowchart illustrating another control method for an electronic device provided in an embodiment of this application;

[0071] Figure 13 An automatic liquid feeding flowchart for an electronic device provided in an embodiment of this application;

[0072] Figure 14 This is a flowchart illustrating the automatic liquid drainage process of the electronic device provided in the embodiments of this application.

[0073] The above figures include the following reference numerals:

[0074] 1-Functional node; 2-Heat exchange element; 3-Connecting valve; 4-Inlet channel; 5-Outlet channel; 6-Drain channel; 7-Cooling medium distribution unit; 8-Drain module;

[0075] 31-Valve body; 32-Manifold; 33-Inlet valve port; 34-Outlet valve port; 35-Cavity;

[0076] 41-Inlet valve;

[0077] 51 - Discharge valve;

[0078] 61-Drain valve;

[0079] 71-Supply line; 72-Return line;

[0080] 81-Drainage pump; 82-Drainage pipeline. Detailed Implementation

[0081] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of this application.

[0082] It should be noted that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application. The terms "installed," "connected," and "linked" should be interpreted broadly, for example, they can be fixed connections, detachable connections, or integral connections; they can be mechanical connections or electrical connections; they can be direct connections or indirect connections through an intermediate medium; they can be internal connections between two elements. The terms "parallel," "perpendicular," and "equal" include the described situation and situations similar to the described situation, the range of which is within an acceptable deviation range, wherein the acceptable deviation range is determined by those skilled in the art taking into account the measurement under discussion and the error associated with the measurement of a particular quantity (i.e., the limitations of the measurement system). For example, "parallel" includes absolute parallelism and approximate parallelism, where an acceptable deviation range for approximate parallelism can be, for example, within 5°; "perpendicular" includes absolute perpendicularity and approximate perpendicularity, where an acceptable deviation range for approximate perpendicularity can also be, for example, within 5°. "Equal" includes absolute equality and approximate equality, where an acceptable deviation range for approximate equality can be, for example, a difference between the two equal items being less than or equal to 5% of either one. Those skilled in the art will understand the specific meaning of the above terms in this application based on the specific circumstances.

[0083] To enable those skilled in the art to better understand the present application, the present application will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0084] An embodiment of this application provides a liquid cooling assembly, please refer to... Figure 1 The component includes multiple heat exchange elements 2, which can be components such as cold plates that have the function of heat exchange through a cooling medium. The heat exchange elements 2 can remove the heat from the high-energy-consuming heat-generating components (such as CPU, GPU, etc.) inside the functional node 1. The multiple heat exchange elements 2 correspond to different heat-generating components. The heat exchange elements 2 are used to introduce a cooling medium, which can be a gas phase medium, a liquid phase medium, or a two-phase mixed medium. This embodiment takes a liquid phase medium as an example for further explanation. The heat exchange elements remove the heat from the heat-generating components through the cooling medium.

[0085] The component includes a connecting valve 3, which includes an inlet valve 33 and multiple outlet valves 34. The cooling medium enters the connecting valve 3 through the inlet valve 33 and is discharged through the outlet valves 34. The outlet valves 34 are correspondingly connected to and connected to the heat exchange elements 2. Here, corresponding connection means that one outlet valve 34 can be connected to one heat exchange element 2, or one outlet valve 34 can be connected to multiple heat exchange elements 2 connected in series. However, it is necessary to ensure that each outlet valve 34 is connected to a heat exchange element 2.

[0086] In this liquid cooling assembly, there can be multiple connecting valves 3, each corresponding to a functional node 1. When the cooling medium enters the functional node 1, it first needs to pass through the connecting valve 3. The connecting valve 3 has the function of adjusting the flow rate of different liquid outlet valves 34. After the flow rate of different liquid outlet valves 34 is adjusted, it enters the corresponding heat exchange element 2, thereby removing the heat from the high-energy-consuming heat-generating components.

[0087] The regulating function of the connecting valve 3 includes ensuring that the flow ratio between any two outlet valve ports 34 is equal to the target flow ratio of the heat exchange elements 2 connected to those two outlet valve ports 34 respectively. For example, if one outlet valve port 34 is connected to one heat exchange element 2, and the other outlet valve port 34 is also connected to one heat exchange element 2, then the target flow ratio of the heat exchange elements 2 connected to these two outlet valve ports 34 is the target flow ratio of the two heat exchange elements 2. Similarly, if one outlet valve port 34 is connected to two heat exchange elements 2 connected in series, and the other outlet valve port 34 is also connected to two heat exchange elements 2 connected in series, then the target flow ratio of the heat exchange elements 2 connected to these two outlet valve ports 34 is the sum of the target flow rates of the two heat exchange elements 2 connected to one outlet valve port 34 divided by the sum of the target flow rates of the two heat exchange elements 2 connected to the other outlet valve port 34. When the number of heat exchange elements 2 connected to the outlet valve port 34 is two or more, the above analogy can be used, and will not be elaborated further here.

[0088] For any heat exchange element 2, its target flow rate is directly proportional to the temperature of its corresponding heat-generating component. For example, during server operation, there are multiple GPUs and CPUs inside, and the load is often uneven. This leads to different temperatures for different CPUs and GPUs, and therefore the required cooling medium flow rate for heat exchange element 2 will also vary. When the temperature of the heat-generating component is high, heat exchange element 2 needs more cooling medium to remove the heat, so the cooling medium flow rate of heat exchange element 2 can be increased to achieve efficient heat dissipation. When the temperature of the heat-generating component is low, less cooling medium is needed to meet its heat dissipation requirements, so the cooling medium flow rate of heat exchange element 2 can be reduced.

[0089] It should be noted that different heat-generating components have different requirements or ranges for safe temperatures. For example, one heat-generating component may be considered to have reached a safe temperature below 50°C, while another may need to be below 30°C to be considered to have reached a safe temperature. Therefore, in this application, the target flow rate of heat exchange element 2 is only directly proportional to the temperature of the heat-generating component corresponding to that heat exchange element 2, for example, it is linearly related. However, the proportional relationship between different heat exchange elements 2 and their corresponding heat-generating components is not necessarily the same; for example, the linear correlation coefficient may be different. In other words, this application converts the temperature parameter of the heat-generating component into a more relevant flow rate parameter to avoid situations where the heat-generating components have the same temperature but require different cooling medium flow rates, thus avoiding affecting the heat dissipation efficiency of the heat-generating component.

[0090] The heat exchange element 2 reflects the target flow rate (ideal cooling medium flow rate) required by different heat-generating components inside the functional node 1. Based on this, the regulating function of the connecting valve 3 makes the flow rate ratio of any two liquid outlet valves 34 equal to the target flow rate ratio of the heat exchange elements 2 connected to those two liquid outlet valves 34 respectively. This allows the cooling medium to be distributed to each heat exchange element 2 as needed, ensuring that the cooling medium can focus on dissipating heat from heat-generating components in high-heat areas, while avoiding overcooling of heat-generating components in low-heat areas and avoiding energy waste.

[0091] Based on the above embodiments, the liquid cooling assembly also includes a liquid inlet channel 4, which is connected to the liquid inlet valve port 33, thereby injecting cooling medium into the connecting valve 3. The liquid inlet channel 4 is equipped with an inlet valve 41 and a flow meter. The inlet valve 41 controls the liquid flow rate of the liquid inlet channel 4, ensuring that the liquid flow rate is equal to the sum of the target flow rates of all heat exchange elements 2. The flow meter monitors the actual flow rate of the liquid inlet channel 4 in real time, ensuring that the actual liquid flow rate is equal to the sum of the target flow rates of the heat exchange elements 2.

[0092] In this application, the target flow rate of heat exchange element 2 is used as a quantifiable parameter for the cooling medium that needs to be introduced into functional node 1. After obtaining the target flow rate of each heat exchange element 2, the sum of the target flow rates of all heat exchange elements 2 can be obtained, thereby adjusting the opening of the liquid inlet valve 41 so that the actual liquid inlet flow rate of the liquid inlet channel 4 is equal to the sum of the target flow rates of all heat exchange elements 2. Thus, the cooling medium can be distributed to the corresponding functional node 1 as needed and meet the heat dissipation requirements of different heat-generating components inside the functional node 1.

[0093] Furthermore, if functional node 1 operates under dynamically changing load scenarios, the temperature of its internal heating components will also change accordingly, and the target flow rate of the corresponding heat exchange element 2 will also change synchronously. After the target flow rate changes, the sum of the target flow rates of all heat exchange elements 2 and the ratio of the target flow rates of the heat exchange elements 2 connected to different outlet valve ports 34 may also change. In this case, by adjusting the opening degree of the inlet valve 41 and the opening degree of the different outlet valve ports 34 of the connecting valve 3, the actual inlet flow rate of the inlet channel 4 is still equal to the sum of the target flow rates of all heat exchange elements 2, and the flow rate ratio of the different outlet valve ports 34 is equal to the target flow rate ratio of the connected heat exchange elements 2, ensuring that the opening degree of the inlet valve 41 and the opening degree of the different outlet valve ports 34 of the connecting valve 3 can be dynamically adjusted.

[0094] Based on the fact that the actual inlet flow rate of the liquid inlet channel 4 is equal to the sum of the target flow rates of all heat exchange elements 2, the actual flow rate allocated to each heat exchange element 2 is equal to its target flow rate, which can further ensure the heat dissipation efficiency of each heat-generating component.

[0095] It should be noted that the above equality and equal to are only theoretical "equal to". In practical applications, there may be deviations due to various factors. In this embodiment, for example, a range of ±5% can be regarded as an equal relationship.

[0096] The connecting valve 3 can be installed inside or outside the functional node 1; no further restrictions are imposed here.

[0097] For server clusters, since the server cluster includes multiple server nodes, the liquid cooling component has multiple liquid inlet channels 4 and multiple connecting valves 3. Each liquid inlet channel 4 corresponds to a connecting valve 3 and a server node, thereby ensuring that each server node has an independent cooling medium distribution mechanism and realizing precise control of heat dissipation for each server node. Especially when the Tank is configured with multiple server nodes with different power consumptions, or when different server nodes are running in dynamically changing load scenarios, the liquid cooling component of this application can ensure the heat dissipation efficiency of each server node, as well as the heat dissipation efficiency of different heat-generating components within each server node.

[0098] In summary, this application determines the target flow rate of each heat exchange element 2 and the sum of the target flow rates of all heat exchange elements 2 by dynamically proportionally relating the target flow rate of the heat exchange element 2 to the temperature of the corresponding heat-generating component. This ensures that the flow rate of the liquid inlet channel 4 equals the sum of these target flow rates, allowing each functional node 1 to allocate the corresponding cooling medium according to actual heat dissipation needs. By determining the required cooling medium flow rate of the heat exchange element 2 corresponding to the heat-generating component based on the temperature of different heat-generating components within the functional node 1, and by precisely controlling the proportion of cooling medium flow to different heat exchange elements 2 using the connecting valve 3, the application ensures that high-heat components receive sufficient cooling while avoiding over-cooling of low-heat components, thus achieving on-demand allocation of the cooling medium within the functional node 1. This method not only improves the heat dissipation efficiency of the functional node 1 but also optimizes energy consumption while ensuring stability through adaptive flow rate adjustment.

[0099] Furthermore, traditional immersion liquid cooling systems often use the entire tank as a unit for unified distribution and temperature control of the cooling medium. Large tank structures inherently have limitations; a large sealed enclosure presents difficulties in manufacturing and leak detection, resulting in high manufacturing costs. Additionally, in practical applications, regardless of whether the servers inside the tank are fully configured, a large amount of cooling medium needs to be filled, leading to high costs and hindering practical application. This application, however, utilizes liquid cooling components to independently fill each server node with cooling medium, eliminating the need for a large tank structure, reducing processing difficulty and manufacturing costs. Moreover, it allows for precise control of the cooling medium entering each server node and its on-demand distribution within the server nodes, improving heat dissipation accuracy and energy efficiency.

[0100] The aforementioned connecting valve 3 includes a valve body 31, a valve core, and a drive mechanism. Please refer to [reference needed]. Figures 3 to 8 The valve body 31 is provided with an inlet valve port 33 and multiple outlet valve ports 34. The valve core is rotatably disposed within the valve body 31, dividing the internal space of the valve body 31 into multiple independent cavities 35, and different cavities 35 are connected to different outlet valve ports 34. The output end of the drive mechanism is connected to the valve core and is used to drive the valve core to rotate. Furthermore, when the valve core rotates within a preset angular displacement range, it can change the communication area ratio between different cavities 35 and the inlet valve port 33, thereby realizing the continuous adjustability of the flow control of different outlet valve ports 34. In other words, during the rotation of the valve core, the communication area between different cavities 35 and the inlet valve port 33 will change, thereby changing the opening degree of different outlet valve ports 34, and the change in opening degree will cause the liquid flow rate of the outlet valve port 34 to change.

[0101] The flow cross-sectional area at any location in the cavity 35 should be greater than or equal to the flow cross-sectional area of ​​the outlet valve 34 connected thereto, so as to ensure that the actual flow rate of the cooling medium is not affected by the flow cross-sectional area inside the cavity 35 when it enters the outlet valve 34 through the cavity 35.

[0102] The drive mechanism can be an electric drive mechanism or an electromagnetic drive mechanism, etc. There are no major restrictions here, as long as it can accurately control the rotation angle of the valve core.

[0103] Furthermore, the valve core includes multiple manifolds 32, which extend radially outward from the axis of the valve body 31, and the extended ends of the manifolds 32 slide and seal with the inner wall of the valve body 31, thereby dividing the interior of the valve body 31 into multiple completely independent fan-shaped cavities 35, ensuring the independence between each cavity 35 and reducing the risk of cooling medium leakage.

[0104] Taking two outlet valve ports 34 as an example, the corresponding cavities 35 should be at least two, and the two cavities 35 are respectively connected to the two outlet valve ports 34. In order to obtain these two cavities 35, at least two manifolds 32 are needed. Of course, if the two manifolds 32 are located on the same diameter line of the valve body 31, the two manifolds 32 can also be regarded as a whole manifold 32. The two cavities 35 can be regarded as being located on both sides of any manifold 32.

[0105] One of the two manifolds 32 corresponds to the inlet valve port 33. This manifold 32 can split the cooling medium in the inlet valve port 33, so that part of the cooling medium enters one cavity 35 and the other part of the cooling medium enters another cavity 35. At this time, both outlet valve ports 34 can have flow. Alternatively, all the cooling medium enters one cavity 35 and the other cavity 35 is closed to the inlet valve port 33. At this time, only one outlet valve port 34 has flow.

[0106] During the rotation of the valve core, the manifold 32 corresponding to the inlet valve port 33 will change the communication area between the two cavities 35 and the inlet valve port 33, thereby changing the flow rate of the two outlet valve ports 34, and thus changing the flow rate ratio between the two outlet valve ports 34.

[0107] Furthermore, the rotation axis of the valve core should be located at the axial center of the valve body 31, or in other words, the axis of the valve core should coincide with the axis of the valve body 31, so as to ensure the stable rotation effect of the valve core and the sealing effect between the manifold 32 and the inner wall of the valve body 31.

[0108] When the number of outlet valve ports 34 is greater than two, the number of cavities 35 is greater than or equal to the number of outlet valve ports 34, thus ensuring that each outlet valve port 34 has a corresponding connected cavity 35. Therefore, the number of manifolds 32 should be at least the same as the number of outlet valve ports 34; for example, when there are three outlet valve ports 34, the corresponding number of manifolds 32 should be at least three. Similarly, when the number of outlet valve ports 34 is other than the number of outlet valve ports 34, the corresponding number of manifolds 32 should be at least greater than or equal to the number of outlet valve ports 34.

[0109] In this embodiment, the connecting valve 3 is described as a three-way valve, meaning there are two outlet valve ports 34 and three manifolds 32. These three manifolds 32 divide the valve body 31 into three cavities 35, with two cavities 35 connected to the two outlet valve ports 34 respectively. Please refer to... Figure 8 One of the three busbars 32 ( Figure 8 The OB plate in the middle can correspond to the inlet valve port 33, while another manifold 32 ( Figure 8 A cavity 35 is formed between the OA plate and the OB plate, communicating with an outlet valve 34; the last manifold 32 ( Figure 8 The OC plate in the middle forms a cavity 35 with the OB plate, which is connected to another liquid outlet 34.

[0110] Furthermore, when the surface of the OB plate coincides with the axis of the inlet valve 33, the OB plate can bisect the inlet valve 33, allowing the cooling medium of the inlet valve 33 to be evenly distributed into the cavities 35 on both sides of the OB plate. At this time, the cavities 35 on both sides of the OB plate have the same communication area as the inlet valve 33. Based on this, if the flow cross-sectional area of ​​the two outlet valves 34 is the same (e.g., the same diameter), then the two outlet valves 34 can have the same flow rate.

[0111] It should be noted that the above-mentioned surface of the OB plate is the ideal surface of the busbar 32 under theoretical conditions, assuming that it has no thickness. However, in actual applications, the busbar 32 cannot be without thickness. Therefore, the surface here can also be the centerline surface of the busbar 32, which is located at the geometric center of the thickness direction of the busbar 32 and divides the busbar 32 into two symmetrical parts. This surface serves as the reference surface for fluid distribution.

[0112] In addition, Figure 8 Based on this, if the valve core is rotated clockwise, the extended end of the OB plate will gradually rotate to the left edge of the inlet valve port 33, as shown. Figure 7 As shown, at this time, the cavity 35 between the OA plate and the OB plate is closed to the inlet valve 33, and the corresponding outlet valve 34 is closed; while the cavity 35 between the OB plate and the OC plate is fully connected to the inlet valve 33, and the corresponding outlet valve 34 has the maximum opening.

[0113] exist Figure 8 Based on this, if the valve core is rotated counterclockwise, the extended end of the OB plate will gradually rotate to the right edge of the inlet valve port 33, such as... Figure 5 As shown, at this time, the cavity 35 between the OA plate and the OB plate is connected to the inlet valve port 33, and the corresponding outlet valve port 34 has the maximum opening; while the cavity 35 between the OB plate and the OC plate is closed to the inlet valve port 33, and the corresponding outlet valve port 34 is closed.

[0114] It should be noted that the connecting valve 3 of this application also has a shut-off function, that is, both outlet valve ports 34 are shut off simultaneously; please refer to Figure 6 As the valve core continues to rotate, the extension end of the OC plate can rotate to a position between one outlet valve port 34 and the inlet valve port 33, and the extension end of the OA plate can rotate to a position between another outlet valve port 34 and the inlet valve port 33. At this time, the cavity 35 between the OC plate and the OA plate can seal the inlet valve port 33. In specific situations, such as when the inlet valve 41 fails and it is necessary to shut off the inlet channel 4, it can be temporarily used as a valve to shut off the inlet channel 4.

[0115] Under normal operating conditions, the cavity 35 between the OC board and the OA board does not need to shut off the liquid inlet channel 4. Instead, at least one liquid outlet valve 34 needs to be connected to the liquid inlet valve 33 through the cavity 35 to ensure that the cooling medium can continuously enter the functional node 1 and ensure the cooling medium circulation and heat dissipation effect.

[0116] In some embodiments, when the cavities 35 on both sides of the manifold 32 have the same communication area as the inlet valve port 33, the valve core angular displacement is defined as zero degrees; such as Figure 4 As shown, the preset angular displacement range mentioned above includes at least [-arcsin(d / 2R), +arsin(d / 2R)], where d is the diameter of the inlet valve port 33 and R is the radius of the valve body 31. Here, arcsin(d / 2R) is the arcsine function of angle α. The angle α can be calculated from d and R. Therefore, based on the valve core angular displacement being zero degrees, when the valve core angular displacement is -α°, the extension end of the OB plate is located at the left edge of the inlet valve port 33; similarly, when the valve core angular displacement is +α°, the extension end of the OB plate is located at the right edge of the inlet valve port 33. Therefore, the preset angular displacement range of the valve core in this application includes at least [-arcsin(d / 2R), +arsin(d / 2R)], ensuring that the rotation of the valve core can at least satisfy the condition that one outlet valve port 34 is closed and the other outlet valve port 34 is fully open.

[0117] Of course, the preset angular displacement range of the valve core can be greater than the above range, but it is necessary to ensure that the extension end of the OB plate cannot rotate to the position of the outlet valve 34, so as to ensure the control effect of the connecting valve 3 on the flow of the outlet valve 34.

[0118] Furthermore, to prevent the OA plate from affecting the flow rate of one outlet valve 34 and the OC plate from affecting the flow rate of the other outlet valve 34 when the valve core rotates within the preset angular displacement range, in this embodiment, within the preset angle range, one cavity 35 should always maintain the maximum communication area with one outlet valve 34, and / or, another cavity 35 should always maintain the maximum communication area with another outlet valve 34.

[0119] In other words, within the preset angular displacement range of the valve core, the extension end of the OA plate is always located above the upper edge of one outlet valve port 34; similarly, the extension end of the OC plate is always located above the upper edge of the other outlet port. This configuration effectively prevents the extension ends of the OA and OC plates from affecting the flow rate of the corresponding outlet valve ports 34 when the valve core rotates, thus avoiding flow resistance to the cooling medium in the outlet valve ports 34 and ensuring efficient heat dissipation of the cooling medium in the heat exchange element 2.

[0120] It should be noted that when the valve core rotates within a preset angle range, the communication area between one cavity 35 and the inlet valve port 33, and the communication area between the other cavity 35 and the inlet valve port 33, are inversely proportional. That is, when the surface of the OB plate coincides with the axis of the inlet valve port 33, the communication areas between the two cavities 35 and the inlet valve port 33 are the same. When the valve core rotates clockwise, the communication area between the cavity 35 between the OA plate and the OB plate and the inlet valve port 33 decreases, while the communication area between the cavity 35 between the OC plate and the OB plate and the inlet valve port 33 increases. Conversely, the communication area between the cavity 35 between the OA plate and the OB plate and the inlet valve port 33 increases, while the communication area between the cavity 35 between the OC plate and the OB plate and the inlet valve port 33 decreases.

[0121] If the preset angular displacement range of the valve core is greater than [-arcsin(d / 2R), +arsin(d / 2R)], then when the angular displacement of the valve core is between [-arcsin(d / 2R), +arsin(d / 2R)], the communication area between the two cavities 35 and the inlet valve port 33 is inversely proportional; when the angular displacement of the valve core is outside of [-arcsin(d / 2R), +arsin(d / 2R)], then the communication area between the two cavities 35 and the inlet valve port 33 remains in the current state.

[0122] For example, when [-arcsin(d / 2R), +arsin(d / 2R)] is [-30°, +30°], and the angular displacement of the valve core is between [-30°, +30°], as the valve core rotates, the communication area between the two cavities 35 and the inlet valve port 33 is inversely proportional, that is, the communication area between one cavity 35 and the inlet valve port 33 increases, and the communication area between the other cavity 35 and the inlet valve port 33 decreases. When the angular displacement of the valve core is between [-45°, -30°], one cavity 35 is disconnected from the inlet valve port 33, while the other cavity 35 maintains the maximum communication area with the inlet valve port 33. As the valve core rotates, the two cavities 35 will still maintain the above state. Similarly, when the angular displacement of the valve core is between [30°, 45°], the two cavities 35 will also maintain the above state, but the communication state between the two cavities 35 and the inlet valve port 33 is the opposite of that when the angular displacement of the valve core is between [-45°, -30°].

[0123] When the valve core's angular displacement is -45°, the extended end of the OC plate is still located on the upper side of the upper edge of the right outlet valve port 34; similarly, when the valve core's angular displacement is 45°, the extended end of the OA plate is located on the upper side of the upper edge of the left outlet valve port 34.

[0124] When the connecting valve 3 is installed inside functional node 1, considering the limited volume of the internal cavity of functional node 1, in some embodiments, to avoid the influence of the connecting valve 3, the outlet valve 34, the inlet valve 33, and the connected pipelines on the internal components of functional node 1, there is at least one straight line passing through the diameter of the valve body 31. The inlet valve 33 and the two outlet valves 34 are located on the same side of this straight line, thereby ensuring that the space on the other side of the straight line is not affected by the outlet valve 34, the inlet valve 33, and the pipelines connected to them. This facilitates the arrangement of the connecting valve 3 in the cavity of functional node 1. At the same time, since the two outlet valves 34 are not located on both sides of the same diameter line of the valve body 31, the overall size of the valve body 31 can be reduced, making it easier to arrange a more compact connecting valve 3 in the cavity of functional node 1.

[0125] Furthermore, in the circumferential direction of the valve body 31, the inlet valve port 33 can be located between the two outlet valve ports 34, and the two outlet valve ports 34 can be symmetrically arranged about the axis of the inlet valve port 33, so that the path of the cooling medium from the inlet valve port 33 into the two outlet valve ports 34 is roughly consistent, avoiding the flow distribution being affected by path differences or other factors.

[0126] Furthermore, to ensure that the cooling medium at the inlet valve port 33 can flow sufficiently out of the two outlet valve ports 34, in this embodiment, the diameter D of the inlet valve port 33 and the two outlet valve ports 34 are the same, or the flow area of ​​the inlet valve port 33 is the same as the flow area of ​​the two outlet valve ports 34. When one of the outlet valve ports 34 is fully open, the cooling medium at the inlet valve port 33 can be completely discharged through that outlet valve port 34, avoiding flow resistance caused by a small diameter or flow area of ​​the outlet valve port 34, which would affect the actual flow rate of the outlet valve port 34.

[0127] The radius R of the valve body 31 and the aforementioned diameter D should satisfy: arcsin(D / 2R) + arcsin(D / R) ≤ 90°; please refer to... Figure 3 Arcsin(D / 2R) is the arcsine function of angle α, and arcsin(D / R) is the arcsine function of angle β. In other words, angle α corresponds to half the central angle of the inlet valve port 33 on the circumference of the circular valve body 31, and angle β corresponds to the central angle of the outlet valve port 34 on the circumference of the circular valve body 31. The sum of angles α and β does not exceed 90°, meaning that the total angle of the three valve ports on the circumference of the valve body 31 does not exceed 180°. This ensures that the three valve ports do not spatially interfere with each other on the circumference of the valve body 31, achieving a symmetrical and non-intersecting layout of the flow channels. Simultaneously, this layout satisfies the requirement that "there is at least one straight line passing through the diameter of the valve body 31, with the inlet valve port 33 and the two outlet valve ports 34 located on the same side of this straight line," guaranteeing the control effect of the connecting valve 3.

[0128] This application also provides a control method for a liquid cooling assembly, applied to the aforementioned liquid cooling assembly. Please refer to [link / reference needed]. Figure 10 The control method includes:

[0129] Under normal operating conditions, the temperature of the internal heating component of functional node 1 is obtained;

[0130] Calculate the target flow rate of the corresponding heat exchange element 2 based on the temperature of the heating component, and calculate the sum of the target flow rates Q2 of all heat exchange elements 2;

[0131] Obtain the actual flow rate Q1 of inlet channel 4;

[0132] Based on the sum of the target flow rates Q2 and the actual flow rate Q1, adjust the flow rate at the inlet valve 33 so that the sum of the target flow rates Q2 is equal to the actual flow rate Q1.

[0133] Adjust the flow rate of the outlet valve 34 according to the target flow rate of each heat exchange element 2, so that the flow rate ratio between any two outlet valves 34 is equal to the target flow rate ratio of the heat exchange elements 2 connected to the two outlet valves 34 respectively.

[0134] The step of adjusting the flow rate at the inlet valve 33 based on the sum of the target flow rates Q2 and the actual flow rate Q1, so that the sum of the target flow rates Q2 equals the actual flow rate Q1, includes:

[0135] If Q2 is greater than Q1, then increase the opening of the inlet valve 41, and the flow rate at the inlet valve port 33 will gradually increase until Q2 = Q1;

[0136] If Q2 is less than Q1, then reduce the opening of the inlet valve 41, and the flow rate at the inlet valve port 33 will gradually decrease until Q2 = Q1.

[0137] The step of adjusting the flow rate of the outlet valve 34 according to the target flow rate of each heat exchange element 2, so that the flow rate ratio between any two outlet valves 34 is equal to the target flow rate ratio of the heat exchange elements 2 connected to the two outlet valves 34 respectively, includes:

[0138] According to the angular displacement formula: Calculate the angular displacement θ; where d is the diameter of the inlet valve 33, R is the radius of the valve body 31 of the connecting valve 3, q1 is the target flow rate of one outlet valve 34, and q2 is the target flow rate of the other outlet valve 34.

[0139] The valve core of the control valve 3 is rotated to angle θ.

[0140] Please refer to Figure 4 Arcsin(d / 2R) is the shut-off angular displacement of the connecting valve 3. In this embodiment, the shut-off angular displacement refers to the angle through which the valve core rotates from the position where the flow rates of the two outlet valve ports 34 are the same to the position where one of the outlet valve ports 34 is completely closed. The following explanation uses 30° as an example for arcsin(d / 2R). Please refer to [link to relevant documentation]. Figure 9 It can be seen that when the angular displacement of the valve core is 0°, the target flow rates q1 and q2 of the two outlet valve ports 34 are equal. At this time, the plate surface of the OB plate coincides with the axis of the inlet valve port 33, and the flow rate of the inlet valve port 33 can be evenly distributed to the two outlet valve ports 34.

[0141] When the angular displacement of the valve core is adjusted between -30° and +30°, the flow ratio of the two outlet valve ports 34 is adjusted accordingly; when the angular displacement of the valve core is less than -30° or greater than +30°, one outlet valve port 34 is fully open and the other outlet valve port 34 is closed.

[0142] Assuming the target flow ratio q2 / q1 of the two outlet valves 34 connected to the heat exchange element 2 is equal to 6 / 4, then θ can be calculated using the formula above. If θ = 6°, then the control valve core is rotated to 6°. At this point, the connection angle between the cavity 35 connected to one outlet valve port 34 and the inlet valve port 33 is 36°, and the connection angle between the cavity 35 connected to the other outlet valve port 34 and the inlet valve port 33 is 24°. The flow ratio of the two outlet valve ports 34 is 36° / 24°, which is equal to the target flow ratio of 6 / 4 of the heat exchange elements connected to the two outlet valve ports 34 respectively. Similarly, when q2 / q1 equals 4 / 6, θ = -6°, then the control valve core is rotated to -6°, and the flow ratio of the two outlet valve ports 34 is 24° / 36°, which is also equal to the target flow ratio of 4 / 6 of the heat exchange elements connected to the two outlet valve ports 34 respectively. For other values ​​of q2 / q1, the value of θ can be obtained by referring to the above calculation method, and the valve core is rotated to angle θ to control the flow ratio of the two outlet valve ports 34 to be equal to the target flow ratio of the two outlet valve ports 34 respectively.

[0143] The above control method dynamically adjusts the opening of the inlet valve 41 by comparing the actual flow rate Q1 of the liquid inlet channel 4 with the sum of the target flow rates Q2 of the heat exchange element 2 in real time. This completely eliminates the situation of excess or insufficient cooling medium inside functional node 1, realizing the on-demand distribution and dynamic adjustment of the cooling medium among various functional nodes 1. Furthermore, by maintaining the flow rate ratio of each outlet valve 34 consistent with the target flow rate ratio of the corresponding heat exchange element 2, it can automatically compensate for the uneven flow rate of the cooling medium caused by the difference in energy consumption of the heat-generating components, ensuring that each heat exchange element 2 obtains a cooling capacity that is precisely matched to its heat load, thus realizing the on-demand distribution and dynamic adjustment of the cooling medium within functional node 1.

[0144] This application also provides a control system for a liquid cooling assembly, used to implement the above-described control method for the liquid cooling assembly, the control system comprising:

[0145] The acquisition unit is used to acquire the temperature of the heating component inside functional node 1 and the actual flow rate Q1 of the liquid inlet channel 4;

[0146] The calculation unit is used to calculate the target flow rate of each heat exchange element 2 and the sum of the target flow rates of all heat exchange elements 2, Q2, based on the temperature of the heating component.

[0147] The first adjustment unit is used to adjust the flow rate of the inlet valve 33 according to the sum of the target flow rates Q2 and the actual flow rate Q1, so that the sum of the target flow rates Q2 is equal to the actual flow rate Q1.

[0148] The second adjustment unit is used to adjust the flow rate of the outlet valve 34 according to the target flow rate of each heat exchange element 2, so that the flow rate ratio between any two outlet valves 34 is equal to the target flow rate ratio of the heat exchange elements 2 connected to the two outlet valves 34 respectively.

[0149] The acquisition unit includes a temperature sensor and a flow meter. The temperature sensor monitors the temperature of the heating component in real time, while the flow meter is located in the liquid inlet channel 4 to monitor the actual flow rate Q1 of the liquid inlet channel 4 in real time.

[0150] Please refer to Figure 2 The first adjustment unit includes a rack management controller (RMC), and the inlet valve 41 receives control commands from the RMC to perform opening and closing actions. The second adjustment unit includes a baseboard management controller (BMC), which receives temperature information from the temperature sensor and flow information from the flow meter; the BMC has a built-in PID controller to realize dynamic flow calculation, calculates the target flow of the corresponding heat exchange element 2 according to different temperature information, and calculates the sum of the target flow of all heat exchange elements 2.

[0151] The BMC is responsible for temperature monitoring within functional node 1. Based on the temperature, it calculates the sum of the target flow rates of all heat exchange elements 2, the target flow rate of each outlet valve 34, and the opening degree of the inlet valve 41, and reports this to the RMC. The BMC defines the relationship model between the valve core's angular displacement and the target flow rate ratio in the form of an array. Please refer to [reference needed]. Figure 9 The valve core's angular displacement is calculated based on the target flow rate ratio, and a control command is sent to the connecting valve controller. The connecting valve controller directly drives the drive mechanism of connecting valve 3 to rotate to the required angular displacement. The drive mechanism can be a stepper motor with an adjustment accuracy of 1.8°.

[0152] Based on the opening information of the inlet valve 41 reported by the BMC, the RMC sends a control command to the connecting valve controller. The inlet valve controller directly drives the inlet valve 41 to operate and feeds back the status signal of the inlet valve 41 when it is adjusted to the corresponding opening.

[0153] This application also provides an electronic device including a functional node 1 and a liquid cooling assembly as described above. The functional node 1 has a cavity in which at least one heat exchange element 2 is disposed. The inlet of the heat exchange element 2 is connected to the outlet valve 34 of the connecting valve 3, and the outlet of the heat exchange element 2 is used to inject a cooling medium into the cavity. The cooling medium first passes through the heat exchange element 2 to remove heat from high-energy-consuming heat-generating components, and then flows into the cavity of the functional node 1 to cool other low-energy-consuming components.

[0154] Among them, different liquid outlet valve ports 34 on the connecting valve 3 can be connected to heat exchange elements 2 in different functional nodes 1. By adjusting the flow rate of different liquid outlet valve ports 34, the flow distribution of different functional nodes 2 can be realized; and / or, different liquid outlet valve ports 34 on the same connecting valve 3 can be connected to different heat exchange elements 2 in the same functional node 1 to realize the flow distribution within the same functional node 1.

[0155] In this embodiment, the functional node 1 includes, but is not limited to, one or more of computing nodes, switching nodes, storage nodes, and power supply nodes. It is sufficient that the functional node 1 has a cavity, and a heat exchange element 2, through which a cooling medium can flow, is arranged within the cavity. Furthermore, the functional node 1 has a control module, which can be a BMC, RMC, etc. This control module can monitor the temperature information of the heating components within the cavity using a temperature sensor, and calculate the target flow rate of the heat exchange element 2 based on the temperature information. Simultaneously, the control module can control the flow rate of the outlet valve 34 and the inlet valve 41 based on the calculated flow rate information, thereby achieving flow distribution among different functional nodes 1 and within the same functional node 1.

[0156] Furthermore, when the connecting valve is configured to correspond to different functional nodes, the different outlet valves of the connecting valve can be connected to the same type of functional node, such as all different outlet valves being connected to a computing node, or all being connected to a switching node, etc.; the different outlet valves of the connecting valve can also be connected to different types of functional nodes, such as one outlet valve being connected to a computing node, and the other outlet valves being connected to a switching node, a storage node, or a power supply node, all of which fall within the protection scope of this application.

[0157] The liquid cooling assembly also includes a cooling medium distribution unit 7 (CDU) and a drain module 8. Please refer to [reference needed]. Figure 1 The cooling medium distribution unit 7 includes a supply pipe 71 and a return pipe 72. The cooling medium circulates throughout the supply pipe 71 and the return pipe 72, and the temperature, flow rate, and pressure of the cooling medium are uniformly regulated by the control system of the cooling medium distribution unit 7. The inlet channel 4 serves as a branch channel on the supply pipe 71, with several inlet channels 4 corresponding to various functional nodes 1, achieving efficient wiring for multiple supply pipes and reducing pipeline complexity and leakage risk.

[0158] The return pipe 72 is equipped with multiple outlet channels 5, which serve as branch channels of the return pipe 72 and connect the return pipe 72 to the cavity of functional node 1. This allows the cooling medium to flow back into the return pipe 72 after passing through the cavity of functional node 1, thus achieving circulation of the cooling medium within the cavity of functional node 1. Each outlet channel 5 is equipped with an outlet valve 51. Under normal operating conditions of functional node 1, the opening degree of the outlet valve 51 is consistent with the opening degree of the inlet valve 41. This means the flow rate of the inlet channel 4 is approximately consistent with the flow rate of the outlet channel 5, enabling the cooling medium to achieve a stable, continuous, and pressure-free closed-loop circulation within the cavity, maintaining a constant flow rate and pressure balance of the cooling medium within functional node 1 and the heat exchange element 2.

[0159] The drainage module 8 includes a drainage pump 81 and a drainage pipe 82 connected to the drainage pump 81. The drainage pipe 82 has several drainage channels 6, which serve as branch channels of the drainage pipe 82 and connect the drainage pipe 82 to the cavity of the functional node 1. A drainage valve 61 is provided on the drainage pipe 82. The inlet valve 41, outlet valve 51, and drainage valve 61 can all be solenoid valves, enabling the opening and closing of the corresponding channels and control of the opening degree.

[0160] In some embodiments, the functional node 1 is further provided with a temperature sensor. The temperature sensor is used to obtain the temperature of the heating component in the cavity and transmit the temperature information to the substrate management controller (BMC) of the functional node 1. The BMC calculates the actual target flow rate required by the corresponding heat exchange element 2 based on the temperature of the heating component corresponding to each heat exchange element 2, and calculates the sum of the target flow rates of all heat exchange elements 2 and the target flow rate ratio of the heat exchange elements 2 connected to the two liquid outlet valve ports 34 respectively.

[0161] Liquid level sensors are installed at the top and bottom of the cavity. The liquid level sensors are used to obtain the liquid level of the cooling medium in the cavity and transmit the real-time liquid level height information to the BMC of this functional node 1.

[0162] This application also provides a control method for an electronic device; please refer to [reference needed]. Figure 11 The control method includes:

[0163] When the power is turned off to control function node 1 (at this time, function node 1 is not charged with cooling medium), control inlet valve 41, outlet valve 51, and drain valve 61 are closed.

[0164] Start the cooling medium distribution unit 7, and the cooling medium circulates in the supply pipe 71 and the return pipe 72;

[0165] The inlet valves 41 on the inlet channels 4 corresponding to multiple functional nodes 1 are opened in a preset order, and the cooling medium enters the cavity of functional node 1.

[0166] When the cooling medium in the cavity reaches the first preset liquid level, the liquid outlet valve 51 is opened; when the cooling medium in the cavity reaches the second preset liquid level, the control function node 1 is powered on; the second preset liquid level is higher than the first preset liquid level.

[0167] The first preset liquid level is located at the bottom of the cavity. When the cooling medium reaches the first preset liquid level, it indicates that the cooling medium has entered the cavity. At this time, the outlet valve 51 can be controlled to open to a small preset opening, and the cooling medium forms an initial circulation. The second preset liquid level is located at the top of the cavity. When the cooling medium reaches the second preset liquid level, it indicates that the cooling medium in the cavity has met the requirements of functional node 1. At this time, the inlet valve 41 and the outlet valve 51 can be adjusted to their normal operating openings. Simultaneously, the liquid inlet process of functional node 1 ends, and functional node 1 is powered on only after all functional nodes 1 have completed liquid inlet.

[0168] This application also provides a control method for an electronic device; please refer to [reference needed]. Figure 12 The control method includes:

[0169] When the power is turned off to control function node 1 (at this time, function node 1 is filled with cooling medium), the inlet valve 41, outlet valve 51, and drain valve 61 are closed.

[0170] The drain valve 61 and drain pump 81 are opened, and the cooling medium in the cavity of functional node 1 enters the drain pipe 82 through the drain channel 6.

[0171] When the cooling medium in the cavity reaches the first preset liquid level, the drain valve 61 and the drain pump 81 are closed.

[0172] The first preset liquid level is located at the bottom of the cavity. When the cooling medium reaches the first preset liquid level, it means that the cooling medium in the cavity has been basically extracted. At this time, the maintenance personnel can unplug the cable and pipe of the functional node 1 and take it out of the cabinet to realize the automatic drainage of the single functional node 1 and subsequent maintenance operations.

[0173] This application also provides a control system for an electronic device, applied to the control method of the aforementioned electronic device, the control system comprising:

[0174] The liquid level acquisition unit is used to acquire the first preset liquid level information at the bottom and the second preset liquid level information at the top in the cavity of functional node 1;

[0175] The first adjustment unit is used to control the opening and closing of the cooling medium distribution unit 7, the inlet valve 41, the outlet valve 51, the drain valve 61, and the drain pump 81.

[0176] The liquid level acquisition unit includes a liquid level sensor for real-time monitoring of the liquid level information of the cooling medium in functional node 1; the first adjustment unit includes a rack management controller (RMC), which acts as the top-level controller to coordinate the CDU, BMC, valve controller, and drain pump 81. The valve controller here includes an inlet valve controller, an outlet valve controller, and a drain valve controller.

[0177] When performing automatic liquid dispensing, please refer to the following: Figure 13 First, initialize RMC to ensure that the inlet valve 41, outlet valve 51 and drain valve 61 of all functional nodes 1 are in the closed state;

[0178] The user starts the automatic liquid feeding process through the RMC interface. The RMC sends a command to the control system of the CDU to start the circulation pump in the CDU. The cooling medium is pressed into the supply pipe 71 and circulates in the supply pipe 71 and the return pipe 72.

[0179] RMC controls the opening of the inlet valve 41 of functional node 1 one by one in a predetermined order (e.g., from bottom to top or from front to back). After the cooling medium enters functional node 1, the liquid level of the cooling medium inside functional node 1 begins to rise.

[0180] When the bottom liquid level sensor of a certain functional node 1 (node ​​n) detects a liquid signal, it reports the signal to the RMC. The RMC then controls the liquid outlet valve 51 of the functional node 1 to open to a small preset opening degree, forming a preliminary cycle.

[0181] When the top liquid level sensor of functional node 1 also detects liquid, the RMC adjusts the inlet valve 41 and outlet valve 51 of that node to their normal operating openings; the liquid inlet process of node n ends, and the RMC reports the process. Functional node 1 is powered on only after all functional nodes 1 have completed their liquid inlet process.

[0182] When performing automatic drainage, please refer to... Figure 14 Taking a single node N as an example; first, the user selects the node N that needs to be maintained or delisted on the RMC interface and starts the drainage process;

[0183] The RMC sends a shutdown command to the BMC of node N. After the BMC completes the safe shutdown of the node's operating system, it cuts off the node's power supply and sends a "power off" signal back to the RMC.

[0184] After receiving the "power off" signal, RMC sends a shutdown command to the inlet valve controller and outlet valve controller of node N to control the inlet valve 41 and outlet valve 51 to close.

[0185] After RMC confirms that the inlet and outlet valves 51 of node N are closed, it sends an opening command to the drain valve controller of node N to open the drain valve 61.

[0186] RMC sends a command to the drain pump controller to start drain pump 81, which begins to draw cooling medium from the drain channel 6 of node N, causing the cooling medium level to drop.

[0187] When the bottom level sensor does not detect liquid, it reports "low level" to the RMC.

[0188] After receiving the low liquid level signal, the RMC sends commands in sequence to close the drain valve 61 and stop the drain pump 81.

[0189] The RMC interface displays "Drainage of node N is complete, safe to operate," at which point maintenance personnel can remove the cables and pipes from node N and take it out of the cabinet.

[0190] This application decentralizes the distribution of cooling media from the entire Tank level down to each functional node, and even within each functional node 1. This enables independent and precise control over the supply, discharge, and flow of cooling media for each functional node 1 and within each functional node 1, achieving true on-demand distribution and precise heat dissipation. Addressing the shortcomings of static flow management, it dynamically adjusts the cooling media flow based on the temperature of heat-generating components within the node, improving heat dissipation accuracy and energy efficiency. Furthermore, by coordinating components such as the BMC, valve controller, and level sensor through the RMC, it achieves automatic liquid intake for multi-node or multi-node devices and automatic liquid drainage for individual functional nodes 1, significantly improving operational efficiency and enabling precise management of the cooling process for each functional node 1, as well as automation and intelligence throughout the entire operation and maintenance process.

[0191] The liquid cooling component, electronic device, control method, and control system provided in this application have been described in detail above. Specific examples have been used to illustrate the principles and implementation methods of this application. The descriptions of the embodiments above are merely for the purpose of helping to understand the method and core ideas of this application. It should be noted that those skilled in the art can make various improvements and modifications to this application without departing from the principles of this application, and these improvements and modifications also fall within the protection scope of the claims of this application.

Claims

1. A liquid cooling assembly, characterized in that, include: Multiple heat exchange elements (2) are used to introduce cooling medium; The connecting valve (3) includes an inlet valve (33) and multiple outlet valves (34). The outlet valves (34) are correspondingly provided and connected to the heat exchange element (2). The connecting valve (3) is used to adjust the flow rate of the outlet valves (34) according to the target flow rate of the heat exchange element (2). The liquid inlet channel (4) is connected to the liquid inlet valve port (33). The liquid inlet channel (4) is provided with a liquid inlet valve (41). The liquid inlet valve (41) is used to adjust the liquid inlet flow rate of the liquid inlet channel (4) according to the sum of the target flow rates of the heat exchange element (2) connected to the connecting valve (3).

2. The liquid cooling assembly according to claim 1, characterized in that, The flow rate ratio between any two outlet valves (34) is equal to the target flow rate ratio of the heat exchange element (2) connected to each of the two outlet valves (34), and the target flow rate is proportional to the temperature of the heating component corresponding to the heat exchange element (2).

3. The liquid cooling assembly according to claim 1, characterized in that, The inlet flow rate is equal to the sum of the target flow rates of the heat exchange element (2) connected to the outlet valve (34).

4. The liquid cooling assembly according to claim 1, characterized in that, The connecting valve (3) includes: The valve body (31) is provided with the liquid inlet valve port (33) and the liquid outlet valve port (34). The valve core is rotatably disposed inside the valve body (31) and divides the valve body (31) into multiple independent cavities (35), and different cavities (35) are respectively connected to different liquid outlet valve ports (34); The drive mechanism has its output end connected to the valve core. The valve core rotates within a preset angular displacement range to change the ratio of the communication area between the cavity (35) and the liquid inlet valve (33).

5. The liquid cooling assembly according to claim 4, characterized in that, The valve core includes multiple manifolds (32), which extend radially outward from the axis of the valve body (31). The extended ends of the manifolds (32) slide and seal against the inner wall of the valve body (31) to divide the valve body (31) into multiple cavities (35).

6. The liquid cooling assembly according to claim 5, characterized in that, There are two outlet valves (34) and three manifolds (32). The three manifolds (32) divide the valve body (31) into three cavities (35). When the surface of one of the manifolds (32) coincides with the axis of the inlet valve (33), the cavities (35) on both sides of the manifold (32) have the same communication area as the inlet valve (33).

7. The liquid cooling assembly according to claim 6, characterized in that, When the cavity (35) on both sides of the manifold (32) has the same communication area as the liquid inlet valve (33), the angular displacement of the valve core is zero. The preset angular displacement range includes [-arcsin(d / 2R), +arcsin(d / 2R)], where d is the diameter of the liquid inlet valve (33) and R is the radius of the valve body (31).

8. The liquid cooling assembly according to claim 6, characterized in that, Within the preset angular displacement range, one of the cavities (35) and one of the liquid outlet valves (34) always maintain the maximum communication area, and / or, another cavity (35) and another liquid outlet valve (34) always maintain the maximum communication area; Within the preset angular displacement range, the communication area between one cavity (35) and the liquid inlet valve (33) and the communication area between the other cavity (35) and the liquid inlet valve (33) are inversely proportional.

9. The liquid cooling assembly according to claim 6, characterized in that, There exists at least one straight line passing through the diameter of the valve body (31), with the inlet valve port (33) and the two outlet valve ports (34) located on the same side of the straight line; in the circumferential direction of the valve body (31), the inlet valve port (33) is located between the two outlet valve ports (34).

10. The liquid cooling assembly according to claim 9, characterized in that, The inlet valve (33) and the two outlet valves (34) have the same diameter D, and the radius R of the valve body (31) satisfies the following relationship with the diameter D: arcsin(D / 2R)+arcsin(D / R)≤90°.

11. An electronic device comprising a functional node (1), characterized in that, It also includes the liquid cooling assembly as described in any one of claims 1-10; The functional node (1) has a cavity, and the heat exchange element (2) is disposed in the cavity.

12. The electronic device according to claim 11, characterized in that, Different outlet valve ports (34) on the same connecting valve (3) are connected to the heat exchange elements (2) in different functional nodes (1); And / or, Different outlet valves (34) on the same connecting valve (3) are connected to different heat exchange elements (2) in the same functional node (1).

13. The electronic device according to claim 11, characterized in that, The functional node (1) includes one or more of computing nodes, switching nodes, storage nodes, and power supply nodes. The functional node (1) includes a control module. The control module is used to calculate the target flow rate of the heat exchange element (2) based on the temperature of the heating component inside the cavity, so as to control the flow rate of the liquid outlet valve (34) and the liquid inlet valve (41).

14. The electronic device according to claim 11, characterized in that, The heat exchange element (2) includes a liquid outlet for injecting cooling medium into the cavity.

15. The electronic device according to claim 14, characterized in that, The liquid cooling assembly further includes a cooling medium distribution unit (7) and a draining module (8). The cooling medium distribution unit (7) includes a liquid supply pipe (71) and a liquid return pipe (72). The liquid inlet channel (4) is connected to the liquid supply pipe (71). The liquid return pipe (72) is provided with a liquid outlet channel (5). The liquid outlet channel (5) is connected to the cavity. The liquid outlet channel (5) is provided with a liquid outlet valve (51). The draining module (8) includes a drain pump (81) and a drain pipe (82) connected to the drain pump (81). The drain pipe (82) is provided with a drain channel (6). The drain channel (6) is connected to the cavity. The drain channel (6) is provided with a drain valve (61).

16. A control method for a liquid cooling assembly, characterized in that, Applied to the liquid cooling assembly according to any one of claims 1-10, comprising: Obtain the temperature of the heating component inside the functional node (1) and the actual flow rate Q1 of the liquid inlet channel (4); The target flow rate of each heat exchange element (2) and the sum of the target flow rates of all heat exchange elements (2) are calculated based on the temperature of the heating component; The flow rate of the liquid inlet channel (4) is adjusted according to the sum of the target flow rates Q2 and the actual flow rate Q1; The flow rate of the outlet valve (34) is adjusted according to the target flow rate of the heat exchange element (2).

17. The control method according to claim 16, characterized in that, The step of adjusting the flow rate of the outlet valve (34) according to the target flow rate of the heat exchange element (2) includes: According to the angular displacement formula: Calculate the angular displacement θ; where d is the diameter of the inlet valve (33), R is the radius of the valve body (31) of the connecting valve (3), q1 is the target flow rate of one of the outlet valves (34), and q2 is the target flow rate of the other outlet valve (34). Control the valve core of the connecting valve (3) to rotate to angle θ.

18. A control system for a liquid cooling component, characterized in that, include: The acquisition unit is used to acquire the temperature of the heating component inside the functional node (1) and the actual flow rate Q1 of the liquid inlet channel (4); The calculation unit is used to calculate the target flow rate of each heat exchange element (2) and the sum of the target flow rates of all heat exchange elements (2) Q2 based on the temperature of the heating component; The first adjustment unit is used to adjust the flow rate of the liquid inlet valve (33) according to the sum of the target flow rates Q2 and the actual flow rate Q1; The second adjustment unit is used to adjust the flow rate of the liquid outlet valve (34) according to the target flow rate of the heat exchange element (2).

19. The control system according to claim 18, characterized in that, The second adjustment unit is used to adjust according to the angular displacement formula: Calculate the angular displacement θ; where d is the diameter of the inlet valve (33), R is the radius of the valve body (31) of the connecting valve (3), q1 is the target flow rate of one outlet valve (34), and q2 is the target flow rate of the other outlet valve (34).

20. A control method for an electronic device, characterized in that, The control method, applied to the electronic device according to any one of claims 11-15, comprises: When the control function node (1) is de-energized, the control inlet valve (41), outlet valve (51), and drain valve (61) are closed. Start the cooling medium distribution unit (7), and the cooling medium circulates in the supply pipe (71) and return pipe (72); The liquid inlet valves (41) on the liquid inlet channels (4) corresponding to the multiple functional nodes (1) are opened in a preset order, and the cooling medium enters the cavity of the functional node (1). When the cooling medium in the cavity reaches the first preset liquid level, the outlet valve (51) is opened, and the opening degree of the outlet valve (51) is less than that of the inlet valve (41); when the cooling medium in the cavity reaches the second preset liquid level, the functional node (1) is powered on.

21. A control method for an electronic device, characterized in that, The control method, applied to the electronic device according to any one of claims 11-15, comprises: When the control function node (1) is de-energized, the control inlet valve (41), outlet valve (51), and drain valve (61) are closed. The drain valve (61) and drain pump (81) are opened, and the cooling medium in the cavity of the functional node (1) enters the drain pipe (82) through the drain channel (6). When the cooling medium in the cavity reaches the first preset liquid level, the drain valve (61) and the drain pump (81) are closed.

22. A control system for an electronic device, characterized in that, include: The liquid level acquisition unit is used to acquire the first preset liquid level information at the bottom and the second preset liquid level information at the top in the cavity of the functional node (1), wherein the second preset liquid level is higher than the first preset liquid level. The first adjustment unit is used to control the opening and closing of the cooling medium distribution unit (7), the inlet valve (41), the outlet valve (51), the drain valve (61), and the drain pump (81).

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