Layered flexible intelligent control cold plate with uniform heat dissipation

Abstract

This invention relates to the field of liquid cooling plate heat dissipation technology, and in particular to a flexible intelligent control cold plate with layered uniform heat dissipation. It includes cooling channels disposed within the main body of the liquid cooling plate. The cooling channels include a main liquid inlet channel and a main liquid outlet channel located on the upper and lower layers of the central symmetrical plane of the main body of the liquid cooling plate, as well as two symmetrical side channel branches about the central symmetrical plane of the main body of the liquid cooling plate. One end of the main liquid inlet channel extends to the side of the main body of the liquid cooling plate as a coolant inlet, and the other end branches to both sides to form the channel branches. The channel branches include a distribution channel and a serpentine channel. One end of the serpentine channel connects to the main liquid inlet channel through the distribution channel, and the other end connects to the main liquid outlet channel. This invention effectively eliminates or reduces the inlet and outlet temperature difference caused by coolant temperature rise, achieving a uniform temperature distribution on the surface of the cold plate.

Description

Technical Field

[0001] This invention relates to the field of liquid cooling plate heat dissipation technology, and in particular to a flexible intelligent control cold plate with layered uniform heat dissipation. Background Technology

[0002] As electronic devices rapidly evolve towards higher performance and greater integration, the heat flux density and total power consumption of their core heat-generating components continue to rise. Simultaneously, these heat-generating components are trending towards larger sizes and planar designs, resulting in non-uniform heat distribution across their heating areas. Typically, for large-area planar heat-generating components, the central region often forms a significant high-temperature hotspot due to the long heat dissipation path and substantial heat accumulation effect, while the peripheral regions have relatively lower temperatures. This leads to a non-uniform temperature field distribution across the entire heating surface, with higher temperatures at the center and lower temperatures at the edges.

[0003] Currently, liquid cooling technology, especially cold plate solutions, is widely used for heat dissipation of high-power electronic components due to its high efficiency in heat transport. However, existing conventional cold plate designs, such as those using a single flow channel or a simple parallel flow channel structure, reveal the following significant drawbacks in practical applications: Firstly, the temperature rise of the coolant leads to poor temperature uniformity on the surface of the cold plate. As the coolant flows through the internal channels of the cold plate, it continuously absorbs heat, and its own temperature gradually increases along the flow direction. For cold plates covering large-area heating elements, this temperature difference effect between the coolant inlet and outlet directly causes the surface temperature of the cold plate to exhibit a gradient distribution along the liquid flow direction. This makes it impossible to achieve a good match with the temperature field of the heating surface on a macroscopic scale, thus causing local overheating or thermal stress problems due to uneven temperature.

[0004] Secondly, it cannot selectively enhance heat dissipation for non-uniform heat sources. Conventional cold plates are mostly designed with uniformly arranged flow channels, lacking the ability to "target" the high heat flux density area at the center of the heat source. This means that even if the heat of the heating element is mainly concentrated in the central area, existing cold plates cannot dynamically adjust or distribute the cooling capacity of each area to specifically enhance heat exchange at the heat concentration point, resulting in the temperature rise in the central hot zone not being effectively suppressed.

[0005] Third, the increased flow channel structure to achieve uniform temperature introduces leakage risks. To improve the surface temperature uniformity of the cold plate, some existing technologies attempt to use a multi-inlet, multi-outlet (multi-branch) flow channel network structure, hoping to improve temperature uniformity by shortening the length of individual flow channels and reducing coolant temperature rise. However, this design inevitably and significantly increases the number of sealing interfaces inside the cold plate and external pipe interfaces. Each interface is a potential leakage point, and the increased number of interfaces significantly increases the risk of coolant leakage, posing a serious threat to the safe and reliable operation of electronic equipment.

[0006] Fourth, it lacks the ability to actively regulate temperature under dynamically changing power conditions. The heat output of electronic components is not constant; it fluctuates dynamically with changes in workload. To ensure that components always operate within their optimal permissible temperature window, the cooling system needs to have temperature regulation capabilities. However, most current conventional liquid cooling systems use constant-speed pumps or constant-opening valves, whose coolant flow rate cannot be adaptively adjusted according to real-time changes in heat source power. Furthermore, they lack the function of actively setting and stabilizing the operating temperature of the cold plate over a wide power range, limiting the system's temperature control accuracy and flexibility under varying operating conditions. Summary of the Invention

[0007] In view of this, the present invention provides a flexible intelligent control cold plate with layered uniform heat dissipation, which aims to provide a liquid cooling plate structure that can significantly improve the surface temperature uniformity of the cold plate, effectively eliminate or reduce the inlet and outlet temperature difference caused by the temperature rise of the coolant, and achieve a balanced distribution of surface temperature of the cold plate.

[0008] To address the aforementioned issues, the present invention provides a flexible intelligent control cold plate with layered uniform heat dissipation, comprising cooling channels disposed within the main body of the liquid-cooled plate. The cooling channels include a main liquid inlet channel and a main liquid outlet channel located on the upper and lower layers of the central symmetrical plane of the main body of the liquid-cooled plate, as well as two symmetrical side channel branches about the central symmetrical plane of the main body of the liquid-cooled plate. One end of the main liquid inlet channel extends to the side of the main body of the liquid-cooled plate as a coolant inlet, and the other end branches to both sides to form the channel branches. Each channel branch includes a distribution channel and a serpentine channel. One end of the serpentine channel connects to the main liquid inlet channel through the distribution channel, and the other end connects to the main liquid outlet channel.

[0009] Optionally, the main liquid inlet channel and the distribution channel are located on the upper layer of the liquid cooling plate body, and the serpentine channel is located on the lower layer of the liquid cooling plate body.

[0010] Optionally, the serpentine flow channel includes multiple long flow channels and multiple short flow channels. All the long flow channels are arranged in parallel, and adjacent long flow channels are connected through short flow channels to achieve flow channel turning. The multiple long flow channels are distributed at different heights of the liquid cooling plate body.

[0011] Optionally, the long flow channel is horizontal, inclined across each floor height, or serpentine with undulations along the floor height.

[0012] Optionally, the adjacent long channels are centrally symmetrical about the center point between them.

[0013] Optionally, the shape of the short flow channel includes a straight flow channel, an arc flow channel, a V-shaped flow channel, and a wavy linear flow channel.

[0014] Optionally, it also includes a temperature monitoring unit, which includes multiple temperature sensors disposed in the central and edge regions of the surface of the liquid cooling plate body. The temperature sensors are used to collect temperature data at key locations of the liquid cooling plate body in real time.

[0015] Optionally, the flow control unit includes an adjustable water pump connected to the coolant inlet, the adjustable water pump being used to adjust the coolant flow rate input to the cooling channel; the adjustable water pump and the temperature monitoring unit form a closed-loop control connection, the adjustable water pump being configured to increase the coolant flow rate when the real-time temperature fed back by the temperature monitoring unit is higher than a preset temperature, and to decrease the coolant flow rate when the real-time temperature is lower than the preset temperature.

[0016] Optionally, the flow control unit further includes a flow meter disposed in the main inlet channel and / or a pressure sensor disposed in the main outlet channel.

[0017] Optionally, it also includes a valve and a temperature monitoring point located at a temperature-sensitive node in the cooling channel, the valve and the temperature monitoring point being connected to a controller; when the temperature at the temperature monitoring point exceeds the upper temperature limit, the controller controls the valve opening to accelerate the local water flow near the valve; when the temperature at the temperature monitoring point is below the lower temperature limit, the controller controls the valve opening to slow down the local water flow near the valve.

[0018] The technical solution of the present invention has the following advantages: 1. Effectively eliminates or reduces the temperature difference between inlet and outlet caused by coolant temperature rise, achieving a uniform temperature distribution on the surface of the cold plate.

[0019] 2. Liquid cooling plates have the ability to target heat dissipation for non-uniform heat sources, especially to enhance cooling of high heat concentration areas such as the center of electronic components, and achieve precise thermal management of hot spots.

[0020] 3. Without increasing or effectively reducing the number of external interfaces, the above-mentioned temperature uniformity and targeted heat dissipation functions are achieved, thereby reducing the risk of system leakage and improving the reliability and safety of long-term operation.

[0021] 4. Enables the liquid cooling system to actively regulate the temperature of the cold plate, and can adjust the cooling parameters in real time according to the dynamic changes in the heat output of electronic components, so as to keep the working temperature of the cold plate stable within the preset target range and meet the precise temperature control requirements under varying operating conditions. Attached Figure Description

[0022] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present invention and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0023] Figure 1 This is a schematic diagram of the overall structure of the flexible intelligent control cold plate with layered uniform heat dissipation in an embodiment of the present invention.

[0024] Figure 2 This is a front view of the flexible intelligent control cold plate with layered uniform heat dissipation in an embodiment of the present invention.

[0025] Figure 3 yes Figure 2 A sectional view along the AA direction.

[0026] Figure 4 yes Figure 2 BB direction sectional view.

[0027] In the diagram: liquid cooling plate body 1, cooling channel 2, inlet 2a, outlet 2b, main liquid inlet channel 21, main liquid outlet channel 22, channel branch 23, liquid distribution channel 231, serpentine channel 232, long channel 2321, short channel 2322. Detailed Implementation

[0028] The specific embodiments of the present invention will now be described in detail with reference to the accompanying drawings. Obviously, the described embodiments are merely some, not all, of the embodiments of the present invention. Based on the description of the present invention, all other embodiments obtained by those skilled in the art without inventive effort are within the scope of protection of the present invention.

[0029] Unless otherwise explicitly specified and limited, the terms "setup," "installation," and "connection" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium. Those skilled in the art can understand the specific meaning of these terms based on the specific circumstances.

[0030] The terms “upper,” “lower,” “left,” “right,” “front,” “back,” “top,” “bottom,” “inner,” and “outer,” etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of the invention is in use. They are only for the convenience of description and simplification, 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. Therefore, they should not be construed as limitations on the present invention.

[0031] The terms “first,” “second,” “third,” etc., are used merely to distinguish elements with similar properties, not to indicate or imply relative importance or a specific order.

[0032] The terms “include,” “comprising,” or any other variation thereof are intended to cover non-exclusive inclusion, which includes not only the elements listed but also other elements not expressly listed.

[0033] Please refer to Figures 1 to 4 This invention provides a flexible intelligent control cold plate with layered uniform heat dissipation, comprising a liquid-cooled plate body 1. The liquid-cooled plate body 1 has a cooling channel 2 inside, which adopts a single inlet and single outlet design. The inlet 2a is located on the side of the liquid-cooled plate body 1 near the top, and the outlet 2b is located on the side of the liquid-cooled plate body 1 near the bottom. The inlet 2a and outlet 2b are located on the same side of the liquid-cooled plate body 1. Furthermore, the outlet 2b and the inlet 2a are located in the same plane in the vertical direction, and this plane defines the central symmetry plane of the liquid-cooled plate body 1.

[0034] Please refer to Figure 3 After entering through inlet 2a, the cooling channel 2 immediately splits into a left-side branch 23 and a right-side branch 23. The left-side and right-side branch 23 are symmetrically distributed within the liquid-cooled plate body 1, and their overall flow direction is from the top to the bottom of the liquid-cooled plate body 1. After extending parallel to the bottom, the two branch channels 23 converge at outlet 2b, forming a single-outlet structure.

[0035] The flexible intelligent control cold plate further includes a temperature monitoring unit and a flow control unit. The temperature monitoring unit is configured to have multiple temperature sensors deployed in the central and edge areas of the surface of the liquid-cooled plate body, respectively, for real-time acquisition of temperature data at key locations on the liquid-cooled plate body 1. The flow control unit includes an adjustable water pump connected upstream of the inlet 2a, the adjustable water pump being used to regulate the flow rate of the coolant input to the cooling channel 2.

[0036] The adjustable water pump and the temperature monitoring unit form a closed-loop control connection. Based on the actual temperature data of the liquid cooling plate collected by the temperature monitoring unit, the adjustable water pump is configured to: increase the speed or opening of the adjustable water pump when the real-time temperature fed back by the temperature monitoring unit is higher than a preset target temperature threshold, thereby increasing the coolant flow rate and enhancing heat dissipation; and decrease the speed or opening of the adjustable water pump when the real-time temperature is lower than the target temperature threshold, thereby reducing the coolant flow rate and minimizing overcooling. Through the above control logic, dynamic and precise control of the surface temperature of the liquid cooling plate is achieved, ensuring that it is stably maintained within the preset operating temperature range.

[0037] Specifically, the lower surface of the liquid cooling plate body 1 is a heat-absorbing surface, which is used to fit and attach to the heat-generating electronic components to achieve heat conduction; the liquid cooling plate body 1 is made of a metal material with good thermal conductivity, preferably aluminum alloy or copper alloy, and is sealed and formed by processes such as brazing or friction stir welding.

[0038] Please refer to Figure 2 and Figure 3 The liquid cooling plate body 1 has a flat plate structure with a closed cooling channel 2 inside. The cooling channel 2 includes a main liquid inlet channel 21 and a main liquid outlet channel 22 located on the upper and lower layers of the central symmetrical plane of the liquid cooling plate body 1, as well as two side channel branches 23 symmetrical about the central symmetrical plane of the liquid cooling plate body 1. One end of the main liquid inlet channel 21 is connected to the side of the liquid cooling plate body 1 as a coolant inlet 2a, and the other end branches to form the channel branches 23. The channel branches 23 include a distribution channel 231 and a serpentine channel 232. One end of the serpentine channel 232 is connected to the main liquid inlet channel 21 through the distribution channel 231, and the other end is connected to the main liquid outlet channel 22. Please refer to Figure 2 The main liquid inlet channel 21 and the distribution channel 231 are located on the upper layer of the liquid cooling plate body 1; please refer to Figure 3 The serpentine flow channel 232 is located in the lower layer of the liquid cooling plate body 1; the lower layer of the liquid cooling plate body 1 is located near the bottom of the liquid cooling plate body 1, and the upper layer of the liquid cooling plate body 1 is located near the top of the liquid cooling plate body 1.

[0039] Specifically, taking the left-side flow channel branch 23 as an example, after the coolant in the main inlet flow channel 21 enters the left-side flow channel branch 23, it first extends laterally to the left in the distribution flow channel 231, then bends downward into the serpentine flow channel 232, flowing in an S-shaped path until it enters the main outlet flow channel 22 and flows out. Overall, the flow direction of both the left-side and right-side flow channel branches 23 is from the top to the bottom of the liquid-cooled plate body 1. After the two serpentine flow channels 232 extend in parallel to the bottom of the liquid-cooled plate body 1, they converge and connect through a converging structure, and finally connect to the outlet 2b, forming a single-outlet structure.

[0040] In this embodiment, the number of bends in the serpentine flow channel 232 can be set according to the size of the liquid cooling plate body 1 and the heat dissipation requirements; preferably, the number of S-shaped bends in each branch is 8; the cross-sectional shape of the flow channel is preferably rectangular or circular, and the hydraulic diameter of the flow channel is preferably 3mm.

[0041] Please refer to Figure 1 Specifically, the temperature monitoring unit includes multiple temperature sensors, which are arranged on the surface or inside the liquid cooling plate body 1. Specifically, the temperature sensors include at least: a first temperature sensor disposed in the central area of ​​the liquid cooling plate body 1, and a second, third, fourth, and fifth temperature sensor disposed in the edge area of ​​the liquid cooling plate body 1.

[0042] Preferably, the first temperature sensor is located at the geometric center of the heat-absorbing surface of the liquid-cooled plate body 1, and the second to fifth temperature sensors are respectively located at the four corner areas or the midpoint areas of the four sides of the heat-absorbing surface. The temperature sensors are preferably negative temperature coefficient thermistors or thermocouples with a response time constant of no more than 1 second to ensure real-time temperature acquisition. Each temperature sensor is connected to the controller via a signal cable to transmit the real-time acquired temperature data to the controller.

[0043] Specifically, the flow control unit includes an adjustable water pump connected upstream of the inlet 2a; the inlet end of the adjustable water pump is connected to the coolant supply source; the adjustable water pump is preferably a brushless DC centrifugal pump or a magnetically driven pump, and its speed can be steplessly adjusted within the range of 20% to 100% of the rated speed; the adjustable water pump is electrically connected to the controller and receives speed or opening control signals from the controller.

[0044] Please refer to Figure 1 Preferably, the flow control unit further includes a flow meter disposed at the inlet 2a and / or a pressure sensor disposed at the outlet 2b, for monitoring the real-time flow and pressure of the coolant as auxiliary parameters for system status monitoring.

[0045] The controller, the temperature monitoring unit, and the adjustable water pump together form a closed-loop control system. The controller has a preset target temperature threshold T_target and an allowable fluctuation range ΔT (preferably ±2℃). The controller is configured to execute the following control logic: Data acquisition: The temperature data of the first temperature sensor, the second temperature sensor, the third temperature sensor, the fourth temperature sensor and the fifth temperature sensor are read in real time at a preset sampling period (preferably 100ms to 500ms), and the average value T_avg is calculated as the current working temperature of the cold plate.

[0046] Deviation calculation: calculating the temperature deviation e between the current operating temperature T_avg and the target temperature threshold T_target, where e= T_avg - T_target.

[0047] PID (Proportional-Integral-Differential) regulation: the controller adopts a PID control algorithm, outputs a corresponding control quantity according to the temperature deviation e, and regulates the rotation speed of the adjustable water pump.

[0048] When T_avg>T_target, that is, e>0, it indicates that the current temperature is relatively high. The controller increases the control signal for the adjustable water pump, increases its rotation speed, increases the flow of coolant to enhance heat exchange, so as to lower the temperature of the cold plate; When T_avg<T_target, that is, e<0, it indicates that the current temperature is relatively low. The controller reduces the control signal for the adjustable water pump, decreases its rotation speed, reduces the flow of coolant to weaken heat exchange, so as to raise the temperature of the cold plate; When |e| ≤ ΔT, it indicates that the current temperature is within the target range, and the controller keeps the current rotation speed of the adjustable water pump unchanged.

[0049] Cyclic iteration: the above steps are continuously executed in a cycle at the sampling period until the temperature of the cold plate stabilizes within the target range of T_target ± ΔT.

[0050] The flexible intelligent control cold plate further comprises a valve and a temperature monitoring point arranged at a temperature sensitive node of the cooling flow channel 2, wherein the valve and the temperature monitoring point are connected to the controller; when the temperature of the temperature monitoring point exceeds an upper temperature limit, the controller controls the opening degree of the valve to accelerate the local water flow near the valve; when the temperature of the temperature monitoring point is lower than a lower temperature limit, the controller controls the opening degree of the valve to slow down the local water flow near the valve.

[0051] Specifically, flexible pipe valves and temperature monitoring points are added at temperature sensitive nodes of the liquid-cooled pipe, and the flexible pipe valves and the temperature monitoring points are jointly controlled by an external controller. When the temperature exceeds the upper temperature limit or exceeds the set temperature uniformity range, the opening degree of the flexible valve is controlled to accelerate the local water flow near the valve, thereby improving the heat exchange efficiency between the liquid and the cold plate. Conversely, the local water flow can be slowed down to reduce the local heat exchange efficiency, thereby specifically lowering or raising the temperature of the sensitive nodes, and then adjusting the temperature uniformity of the entire cold plate.

[0052] The working process of the liquid-cooled cold plate and the temperature regulation system thereof according to the present embodiment will be described below.

[0053] First, the adjustable water pump is started, and coolant enters the cooling channel 2 through the inlet 2a. The coolant is evenly divided into two paths by the diversion structure, entering the left channel branch 23 and the right channel branch 23 respectively. The two coolant paths meander along the serpentine channel 232, continuously absorbing the heat conducted from the heat-generating components by the liquid cooling plate body 1 during the flow. Finally, the two coolant paths converge at the confluence structure, carrying the heat and being discharged through the outlet 2b, completing one heat dissipation cycle.

[0054] During this process, the temperature monitoring unit monitors the temperature of the center and surrounding area of ​​the liquid-cooled plate body 1 in real time and transmits the data to the controller. When the heat output of the electronic components changes (e.g., switching from standby to full-load operation), the temperature in the central area rises. Upon detecting the temperature deviation, the controller immediately increases the speed of the adjustable water pump to increase the coolant flow rate, thereby pulling the plate temperature back to the preset target value. Conversely, when the heat output decreases, the controller automatically reduces the water pump speed and coolant flow rate to avoid over-cooling, which could lead to condensation or energy waste.

[0055] Please refer to Figure 3 The serpentine flow channel 232 includes multiple long flow channels 2321 and multiple short flow channels 2322. All the long flow channels 2321 are arranged side by side, and adjacent long flow channels 2321 are connected through short flow channels 2322 to achieve flow channel turning. In this embodiment, all long flow channels 2321 are located in the same plane. In another embodiment, the multiple long flow channels 2321 are distributed at different heights of the liquid cooling plate body 1, that is, at different heights in the thickness direction of the liquid cooling plate body 1, so as to achieve uniform heat absorption in the thickness direction of the liquid cooling plate body 1. For example, a certain long flow channel 2321 is located 5cm away from the top of the liquid cooling plate body 1, while the two adjacent long flow channels 2321 are located at 9cm and 13cm away from the top of the liquid cooling plate body 1, respectively.

[0056] This embodiment Figure 3 In the design, the long flow channel 2321 is horizontal. In another embodiment, the long flow channel 2321 can also be designed to be inclined across each floor height or serpentine, with undulating curves along the floor height. The purpose is to ensure sufficient heat absorption of the liquid cooling plate body 1 within the vertical plane containing each long flow channel 2321. Furthermore, adjacent long flow channels 2321 can be designed to be centrally symmetrical about their center point, thereby achieving a balanced heat absorption effect between adjacent long flow channels 2321.

[0057] Specifically, when the long flow channel 2321 is inclined or has a serpentine shape with concave and convex shapes, in order to facilitate the connection of adjacent long flow channels 2321 with short flow channels 2322, the shape of the short flow channel 2322 can be designed as one of the following: a straight flow channel, an arc flow channel, a V-shaped flow channel, and a wavy line flow channel.

[0058] The flexible intelligent control cold plate with layered uniform heat dissipation proposed in this invention features layered flow in the liquid cooling pipes, which improves the temperature uniformity in the thickness direction of the cold plate; the inlet and outlet are located on the same vertical plane, ensuring balanced heating and cooling and improving the uniformity of inlet and outlet temperatures; the cold pipes have single inlet and single outlet, reducing the number of inlet and outlet connection points and lowering the risk of leakage; and temperature monitoring points and closed-loop monitoring are arranged to achieve active temperature control.

[0059] The flexible intelligent control cold plate with layered uniform heat dissipation proposed in this invention improves the surface temperature uniformity of the cold plate and eliminates the temperature difference between the inlet and outlet. By employing a single inlet branching into a symmetrical serpentine flow channel and converging at a single outlet at the bottom, the effective length of a single flow channel is effectively shortened. Compared to traditional single long flow channels, this solution significantly reduces the temperature rise of the coolant along a single path, thereby reducing the impact of the coolant inlet and outlet temperature difference on the surface temperature of the cold plate. Simultaneously, the symmetrical flow channel design on both sides makes the surface temperature distribution of the liquid-cooled plate more even, avoiding temperature gradients caused by the coolant flow direction.

[0060] The flexible intelligent control cold plate with layered uniform heat dissipation proposed in this invention embodiment achieves targeted heat dissipation capability for non-uniform heat sources: the serpentine flow channel extends from top to bottom, and its structure allows the coolant to fully and uniformly cover and sweep across the center and surrounding areas of the liquid cooling plate surface. When the central area of ​​the heating element is a hot spot with high heat flux density, this flow channel layout ensures that the coolant can continuously and effectively flow through the central area, carrying away concentrated heat, thereby achieving targeted enhanced heat dissipation for non-uniform heat sources.

[0061] The flexible intelligent control cold plate with layered uniform heat dissipation proposed in this invention reduces the risk of system leakage and improves reliability. Its single-inlet, single-outlet piping design greatly simplifies external piping interfaces. Compared to the complex multi-inlet, multi-outlet piping systems used in existing technologies to achieve uniform temperature, this application minimizes the number of external interfaces, fundamentally reducing potential leakage points and significantly improving the sealing reliability and safety of the liquid cooling system during long-term operation.

[0062] The flexible intelligent control cold plate with layered uniform heat dissipation proposed in this invention embodiment achieves active and precise temperature control under dynamically changing power conditions: by implementing closed-loop control of multi-point temperature monitoring on the cold plate surface and an imported adjustable water pump, this solution endows the liquid cooling system with dynamic response capabilities. When the heat generation power of electronic components fluctuates, the system can automatically and promptly adjust the coolant flow rate based on real-time temperature feedback, thereby actively and precisely stabilizing the cold plate's operating temperature within a preset target range, perfectly adapting to the thermal management requirements of electronic equipment operating under varying loads.

[0063] The above are merely specific embodiments of the present invention, but the scope of protection of the present invention is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in the present invention should be included within the scope of protection of the present invention.

Claims

1. A flexible, intelligently controlled cold plate with layered, uniform heat dissipation, characterized in that, The system includes cooling channels within the liquid-cooled plate body. These channels include a main liquid inlet channel and a main liquid outlet channel located on the upper and lower layers of the central symmetrical plane of the liquid-cooled plate body, as well as two side channel branches symmetrical about the central symmetrical plane of the liquid-cooled plate body. One end of the main liquid inlet channel extends to the side of the liquid-cooled plate body as a coolant inlet, while the other end branches to form the channel branches. Each channel branch includes a distribution channel and a serpentine channel. One end of the serpentine channel connects to the main liquid inlet channel through the distribution channel, and the other end connects to the main liquid outlet channel.

2. The flexible intelligent control cold plate with layered uniform heat dissipation according to claim 1, characterized in that, The main liquid inlet channel and the distribution channel are located on the upper layer of the liquid cooling plate body, and the serpentine channel is located on the lower layer of the liquid cooling plate body.

3. The flexible intelligent control cold plate with layered uniform heat dissipation according to claim 1, characterized in that, The serpentine flow channel includes multiple long flow channels and multiple short flow channels. All the long flow channels are arranged in parallel, and adjacent long flow channels are connected by short flow channels to achieve flow channel turning. The multiple long flow channels are distributed at different heights of the liquid cooling plate body.

4. The flexible intelligent control cold plate with layered uniform heat dissipation according to claim 3, characterized in that, The long flow channel is horizontal, inclined across each floor height, or serpentine with undulations along the floor height.

5. The flexible intelligent control cold plate with layered uniform heat dissipation according to claim 4, characterized in that, The adjacent long channels are centrally symmetrical about the center point between them.

6. The flexible intelligent control cold plate with layered uniform heat dissipation according to claim 3, characterized in that, The shape of the short flow channel includes a straight flow channel, an arc flow channel, a V-shaped flow channel, and a wavy linear flow channel.

7. The flexible intelligent control cold plate with layered uniform heat dissipation according to any one of claims 1-6, characterized in that, It also includes a temperature monitoring unit, which includes multiple temperature sensors disposed in the central and edge areas of the liquid cooling plate body surface. The temperature sensors are used to collect temperature data at key locations of the liquid cooling plate body in real time.

8. The flexible intelligent control cold plate with layered uniform heat dissipation according to claim 7, characterized in that, It also includes a flow control unit, which includes an adjustable water pump connected to the coolant inlet. The adjustable water pump is used to adjust the flow rate of the coolant entering the cooling channel. The adjustable water pump and the temperature monitoring unit form a closed-loop control connection. The adjustable water pump is configured to increase the coolant flow rate when the real-time temperature fed back by the temperature monitoring unit is higher than a preset temperature, and to decrease the coolant flow rate when the real-time temperature is lower than the preset temperature.

9. The flexible intelligent control cold plate with layered uniform heat dissipation according to claim 7, characterized in that, The flow control unit further includes a flow meter disposed in the main inlet channel and / or a pressure sensor disposed in the main outlet channel.

10. The flexible intelligent control cold plate with layered uniform heat dissipation according to any one of claims 1-6, characterized in that, It also includes valves and temperature monitoring points located at temperature-sensitive nodes in the cooling channel, and the valves and temperature monitoring points are connected to a controller; when the temperature at the temperature monitoring point exceeds the upper temperature limit, the controller controls the valve opening to accelerate the local water flow near the valve; when the temperature at the temperature monitoring point is lower than the lower temperature limit, the controller controls the valve opening to slow down the local water flow near the valve.

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