A variable topology adaptive active heat dissipation system and method

Abstract

The application provides a variable topology adaptive active heat dissipation system and method, wherein the system comprises: a flow channel assembly, the flow channel assembly comprising a plurality of parallel sub-flow channels, two ends of the sub-flow channels being respectively communicated with a refrigerant inlet and a refrigerant outlet of a refrigerant circulating device; a heat exchange region being arranged on the sub-flow channels, and a borrowing assembly being arranged between adjacent sub-flow channels, the borrowing assembly being used for borrowing refrigerant from the adjacent sub-flow channels; a plurality of composite valve assemblies, each composite valve assembly being arranged at one end of the sub-flow channel communicated with the refrigerant outlet; a plurality of temperature sensing arrays, each temperature sensing array being arranged corresponding to one heat exchange region, the temperature sensing array being electrically connected with the corresponding composite valve assembly through a control module, and being used for detecting the temperature of the heat exchange region and driving the composite valve assembly through the control module to adjust the opening and closing and flow of any one sub-flow channel. The heat dissipation system provided by the application realizes accurate and efficient targeted heat dissipation of a local overheated region.

Description

Technical Field

[0001] This disclosure generally relates to the field of heat dissipation technology for electronic devices, and specifically to an adaptive active heat dissipation system and method with a variable topology. Background Technology

[0002] With the rapid development of electronic information technology, integration and miniaturization have become mainstream trends. This has led to a sharp increase in the power density of electronic devices (especially high-power chips). If the heat generated during operation cannot be dissipated in time, it will seriously affect performance and reliability. To address this, active liquid cooling technology has been widely adopted due to its efficient heat transfer capabilities. Among these technologies, cooling systems containing multiple parallel flow channels are a common design solution for dealing with localized high heat flux density problems.

[0003] However, existing parallel channel cooling solutions mostly employ a fixed topology, meaning each channel operates independently without a coordination mechanism. When a localized area in the system overheats due to a sudden change in workload, the corresponding channel may have already reached its maximum cooling capacity, while channels with lower loads and redundant cooling capacity cannot provide effective support. This leads to uneven distribution of cooling resources within the system, failing to fully utilize the overall heat dissipation potential and making it difficult to meet the stringent requirements of modern high-performance electronic devices for efficient and balanced heat dissipation. Summary of the Invention

[0004] In view of the above-mentioned defects or deficiencies in the prior art, it is desirable to provide an adaptive active heat dissipation system and method with variable topology to solve the above problems.

[0005] The first aspect of this application provides an adaptive active cooling system with a variable topology, comprising:

[0006] The flow channel assembly includes multiple parallel sub-flow channels, the two ends of which are respectively connected to the refrigerant inlet and refrigerant outlet of the refrigerant circulation device; the sub-flow channels are provided with heat exchange areas, and adjacent sub-flow channels are provided with borrowing components, which are used to borrow refrigerant from adjacent sub-flow channels.

[0007] Multiple composite valve assemblies, each of the composite valve assemblies being located at one end of the sub-flow channel that connects to the refrigerant outlet;

[0008] Multiple temperature sensor arrays are provided, each corresponding to a heat exchange area. The temperature sensor array is electrically connected to the corresponding composite valve assembly through a control module to detect the temperature of the heat exchange area and drive the composite valve assembly through the control module to adjust the opening and closing of any one of the sub-channels and the flow rate.

[0009] According to the technical solution provided in the embodiments of this application, the composite valve assembly includes:

[0010] A valve frame is provided with an inlet and an outlet. A valve core is movably installed in the cavity of the valve frame. The front end of the valve core is provided with a sealing part for adjusting the opening degree.

[0011] A piezoelectric ceramic sheet is embedded in the front end of the valve core, the piezoelectric ceramic sheet connects the valve core and the sealing part, and is electrically connected to the control module.

[0012] According to the technical solution provided in the embodiments of this application, the borrowing component includes:

[0013] Secondary channel, which connects two adjacent sub-channels and is located between the composite valve assembly and the heat exchange area;

[0014] A miniature flow limiting valve is disposed in the secondary channel and is used to control the opening and closing of the secondary channel and the flow rate.

[0015] A regulating valve is provided in the sub-channel connected to the secondary channel inlet and is positioned between the secondary channel inlet and the heat exchange area.

[0016] According to the technical solution provided in the embodiments of this application, the borrowing component further includes a one-way valve, which is disposed in the secondary channel and positioned between the miniature flow limiting valve and the outlet of the secondary channel.

[0017] A second aspect of this application provides an adaptive active cooling method based on an adaptive active cooling system with a variable topology as described above, the method comprising:

[0018] Acquire temperature information, which includes a first temperature corresponding to each of the heat exchange zones;

[0019] When it is determined that the first temperature of the first heat exchange zone is greater than or equal to the first set temperature and less than the second set temperature, the piezoelectric ceramic sheet corresponding to the first heat exchange zone is controlled to vibrate at a set frequency, and the sealing part is driven to move back and forth, so that the medium passes through the composite valve assembly in the form of pulses.

[0020] When it is determined that the first temperature of the first heat exchange zone is greater than the second set temperature, the valve core corresponding to the first heat exchange zone is controlled to open to the target opening degree so that the medium passes through the composite valve assembly at a constant flow rate.

[0021] According to the technical solution provided in the embodiments of this application, after the step of causing the medium to pass through the composite valve assembly in a pulsed manner, or causing the medium to pass through the composite valve assembly at a constant flow rate, the method further includes:

[0022] Calculate the first temperature drop rate of the first heat exchange zone in real time.

[0023] When the first temperature drop rate is less than the first set rate, obtain the first opening degree of the valve core in the composite valve assembly on the current sub-channel.

[0024] If it is determined that the first opening is not the maximum opening, adjust the first opening to the maximum opening;

[0025] When the first opening degree is determined to be the maximum opening degree, the first composite valve assembly and the first borrowing assembly are controlled to operate to borrow refrigerant from the adjacent sub-channel; the first borrowing assembly is a borrowing assembly on the secondary channel between the current sub-channel and the adjacent sub-channel, and the first composite valve assembly is a composite valve assembly on the adjacent sub-channel.

[0026] According to the technical solution provided in the embodiments of this application, when it is determined that the first opening degree is the maximum opening degree, the first composite valve assembly and the first borrowing assembly are controlled to operate to borrow refrigerant from the adjacent sub-channel, including:

[0027] When it is determined that the first opening is the maximum opening, the miniature flow limiting valve in the first borrowing component is opened;

[0028] Increase the second and third opening degrees to allow refrigerant to enter the current sub-channel from the adjacent sub-channel; the second opening degree is the valve core opening degree of the first composite valve assembly, and the third opening degree is the opening degree of the regulating valve in the adjacent sub-channel;

[0029] The second and third opening degrees are dynamically adjusted until the first temperature drop rate is greater than or equal to the second set rate.

[0030] According to the technical solution provided in the embodiments of this application, before determining that the first opening degree is the maximum opening degree and controlling the first composite valve assembly and the first borrowing assembly to operate in order to borrow refrigerant from the adjacent sub-channel, the method further includes:

[0031] Obtain the second temperature and the second temperature drop rate of the heat exchange region corresponding to the adjacent sub-channels;

[0032] When it is determined that the second temperature is greater than the first set temperature and the rate of decrease of the second temperature is greater than the first set rate, the second opening degree and the third opening degree are obtained.

[0033] When it is determined that both the second opening degree and the third opening degree are not the maximum opening degree, the control of the first composite valve assembly and the first borrowing assembly is executed to borrow refrigerant from the adjacent sub-channel.

[0034] According to the technical solution provided in the embodiments of this application, after obtaining the second opening degree and the third opening degree, the method further includes:

[0035] When it is determined that the third opening is the maximum opening and the second opening is not the maximum opening, the micro flow limiting valve in the first borrowing component is opened, and the second opening is increased.

[0036] According to the technical solution provided in the embodiments of this application, after obtaining the second temperature and the second temperature decrease rate of the heat exchange region corresponding to the adjacent sub-channels, the method further includes:

[0037] When it is determined that the second temperature is lower than the first set temperature and the rate of decrease of the first temperature is lower than the first set rate, the third opening is adjusted to zero.

[0038] Open the miniature flow-limiting valve in the first borrowing component and dynamically adjust the second opening until the first temperature drop rate is greater than or equal to the second set rate.

[0039] Compared with the prior art, the beneficial effects of this application are as follows: by constructing a flow channel assembly consisting of multiple parallel sub-flow channels and setting up borrowing components between adjacent sub-flow channels, combined with a composite valve assembly linked with a temperature sensing array, a variable topology heat dissipation network capable of dynamically reconfiguring the cooling resource path is constructed; the system can intelligently adjust the on / off state and flow rate of each sub-flow channel according to the real-time temperature of each heat exchange area, and allows the refrigerant to be borrowed between adjacent flow channels as needed, realizing precise and efficient targeted heat dissipation of local overheated areas, while significantly improving the global utilization efficiency of system cooling resources and overall heat dissipation capacity. Attached Figure Description

[0040] Other features, objects, and advantages of this application will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings:

[0041] Figure 1 A schematic diagram of the adaptive active cooling system with variable topology is provided for Example 1;

[0042] Figure 2 for Figure 1 A schematic diagram showing the distribution of the ends of multiple sub-channels in the heat dissipation system shown.

[0043] Figure 3 This is a schematic diagram of the composite valve assembly.

[0044] Figure 4 The flowchart shows the steps of the adaptive active heat dissipation method provided in Example 2.

[0045] Reference numerals: 1. Sub-channel; 2. Heat exchange area; 3. Borrowing component; 4. Composite valve assembly; 5. Valve skeleton; 6. Inlet; 7. Outlet; 8. Valve core; 9. Sealing part; 10. Piezoelectric ceramic plate; 11. Secondary channel; 12. Miniature flow restrictor valve; 13. Regulating valve; 14. Check valve. Detailed Implementation

[0046] The present application will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, only the parts relevant to the invention are shown in the accompanying drawings.

[0047] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. This application will now be described in detail with reference to the accompanying drawings and embodiments.

[0048] Example 1

[0049] Please refer to Figures 1-3 This application provides an adaptive active cooling system with a variable topology, comprising:

[0050] The flow channel assembly includes multiple parallel sub-flow channels 1, the two ends of which are respectively connected to the refrigerant inlet and refrigerant outlet of the refrigerant circulation device; the sub-flow channel 1 is provided with a heat exchange area 2, and a borrowing component 3 is provided between adjacent sub-flow channels 1, the borrowing component 3 being used to borrow refrigerant from adjacent sub-flow channels 1.

[0051] Multiple composite valve assemblies 4, each of the composite valve assemblies 4 being located at one end of the sub-channel 1 that connects to the refrigerant outlet;

[0052] Multiple temperature sensor arrays are provided, each corresponding to one of the heat exchange areas 2. The temperature sensor arrays are electrically connected to the corresponding composite valve assembly 4 through a control module to detect the temperature of the heat exchange area 2 and drive the composite valve assembly 4 through the control module to adjust the opening and closing and flow rate of any one of the sub-channels 1.

[0053] Specifically, such as Figure 1 and Figure 2As shown, in this embodiment, the flow channel assembly includes six sub-flow channels 1 arranged in parallel. These six sub-flow channels 1 are arranged in a ring at their ends; this compact layout facilitates efficient space utilization and uniform refrigerant distribution. The two ends of these sub-flow channels 1 are respectively connected to the refrigerant inlet and refrigerant outlet of a refrigerant circulation device (not shown), forming the main pathway for refrigerant circulation. The middle section of the sub-flow channels 1 unfolds in a flat shape, and each flat section of the sub-flow channel 1 is provided with a heat exchange area 2. This area is used for close contact with heating elements (such as chips) and is the core part of the system for heat exchange.

[0054] To achieve dynamic allocation of cooling resources, a borrowing component 3 is set between two adjacent sub-channels 1. Its function is to establish a connection between adjacent channels and realize the on-demand allocation of cooling medium from one sub-channel 1 to another sub-channel 1. This is the key to the system's ability to achieve variable topology and dynamic redistribution of cooling resources.

[0055] Multiple composite valve assemblies 4 are respectively disposed at one end of each sub-channel 1 that is connected to the refrigerant outlet. The composite valve assembly 4 can make the cooling medium flow through in a pulsed or continuous and stable manner according to the control signal and through different movement modes of its internal components, thereby achieving precise adjustment of the heat exchange intensity.

[0056] Each heat exchange zone 2 is equipped with a corresponding temperature sensor array (not shown in the figure) for real-time temperature monitoring of the corresponding zone. The temperature sensor array is electrically connected to the corresponding composite valve assembly 4 through the control module, forming a closed-loop control. Based on the temperature signal detected by the temperature sensor array, the control module drives the corresponding composite valve assembly 4 to operate, thereby adjusting the opening and closing state and flow rate of each sub-channel 1, achieving adaptive adjustment of the heat dissipation system.

[0057] Through the above structure, this system constructs a variable topology heat dissipation network capable of dynamically reconfiguring cooling resource paths. When the temperature of a certain heat exchange zone 2 is too high, the system can not only precisely control the flow rate by adjusting the composite valve assembly 4 of the corresponding sub-channel 1 in that zone, but also borrow refrigerant from the adjacent sub-channel 1 with a lower temperature by borrowing the borrowing assembly 3, thereby achieving precise and efficient heat dissipation for the locally overheated area.

[0058] Furthermore, the composite valve assembly 4 includes:

[0059] The valve frame 5 is provided with an inlet 6 and an outlet 7. A valve core 8 is movably installed in the cavity of the valve frame 5. The front end of the valve core 8 is provided with a sealing part 9 for adjusting the opening degree.

[0060] A piezoelectric ceramic sheet 10 is embedded in the front end of the valve core 8. The piezoelectric ceramic sheet 10 connects the valve core 8 and the sealing part 9, and is electrically connected to the control module.

[0061] Specifically, the valve frame 5 constitutes the main structure of the assembly, with an inlet 6 at its end and an outlet 7 on its side wall for connecting to the sub-channel 1 to form a refrigerant flow path. An axially movable valve core 8 is movably installed within the internal cavity of the valve frame 5. The front end of the valve core 8 has a sealing part 9, the shape of which matches the cavity of the valve frame 5. The axial displacement of the valve core 8 changes the gap between the sealing part 9 and the outlet 7, thereby achieving continuous adjustment of the flow opening and refrigerant flow rate of the sub-channel 1. Optionally, the valve core 8 is driven by an electric actuator to precisely adjust its opening. The electric actuator, as a driving element in one mode of the composite valve assembly 4, is electrically connected to the control module and can receive control signals from the control module.

[0062] The piezoelectric ceramic plate 10, as the core driving element, is embedded inside the front end of the valve core 8, specifically between the valve core 8 body and the sealing part 9. The piezoelectric ceramic plate 10 is electrically connected to the system's control module and receives control signals from it. When different forms of voltage signals (such as different frequencies and amplitudes) are applied to the piezoelectric ceramic plate 10, it generates corresponding high-frequency micro-amplitude expansion and contraction deformation. This deformation is directly transmitted to the sealing part 9, thereby driving the sealing part 9 to generate high-frequency reciprocating micro-displacement. When the sealing part 9 vibrates at high frequency, it generates periodic disturbances and suction effects on the refrigerant, causing the refrigerant to pass through in pulse form.

[0063] The composite valve assembly 4 achieves intelligent flow regulation through two driving modes: an electric push rod and a piezoelectric ceramic plate 10. When the heat exchange demand is low, an alternating voltage is applied to the piezoelectric ceramic plate 10 to make it vibrate at high frequency, which drives the sealing part 9 to move back and forth slightly. The refrigerant passes through in a pulse form, which can enhance heat exchange and prevent excessive cooling. When the temperature rise is detected and heat dissipation needs to be enhanced, the extension and retraction of the electric push rod is controlled to drive the valve core 8 to move as a whole to increase the opening, so that the refrigerant passes through at a continuous high flow rate, thereby quickly responding to high heat loads.

[0064] Furthermore, the borrowing component 3 includes:

[0065] Secondary channel 11, which connects two adjacent sub-channels 1, and the connection position is located between the composite valve assembly 4 and the heat exchange area 2;

[0066] A miniature flow limiting valve 12 is disposed in the secondary channel 11 and is used to control the opening and closing of the secondary channel 11 and the flow rate.

[0067] A regulating valve 13 is disposed in the sub-channel 1 connected to the inlet of the secondary channel 11, and is positioned between the inlet of the secondary channel 11 and the heat exchange area 2.

[0068] Specifically, such as Figure 1 As shown, the borrowing component 3 is disposed between two adjacent sub-channels 1, and its core component is a secondary channel 11. Both ends of this secondary channel 11 are connected to the two adjacent sub-channels 1, and the connection point is located in the section between the composite valve assembly 4 and the heat exchange zone 2 of the corresponding sub-channel 1. This specific location ensures that after the refrigerant has undergone flow regulation through the composite valve assembly 4, it has the physical conditions to be redistributed to the adjacent channels before entering the heat exchange zone 2 for heat exchange.

[0069] A miniature flow-limiting valve 12 is installed inside the secondary channel 11. This valve serves as the main control unit for the borrowing channel, electrically connected to the control module, and is responsible for controlling the on / off state of the secondary channel 11 and precisely regulating the flow rate of the borrowed refrigerant. Simultaneously, a regulating valve 13 is installed in the sub-channel 1 where the inlet of the secondary channel 11 is located, between the inlet of the secondary channel 11 and the heat exchange area 2. The function of this regulating valve 13 is to distribute the flow direction of the refrigerant passing through this area, i.e., to control whether the refrigerant continues to flow into its own heat exchange area 2 or is diverted into the secondary channel 11 to flow into the adjacent sub-channel 1.

[0070] Through the coordinated operation of the miniature flow restrictor valve 12 and the regulating valve 13, this borrowing component 3 can achieve controllable flow and precise distribution of refrigerant between adjacent sub-channels 1, so that when local hot areas need to enhance heat dissipation, cooling resources can be allocated from adjacent channels in a timely manner to achieve dynamic optimization of the system's heat dissipation capacity.

[0071] Furthermore, the borrowing component 3 also includes a one-way valve 14, which is disposed in the secondary channel 11 and positioned between the miniature flow limiting valve 12 and the outlet of the secondary channel 11.

[0072] Specifically, a one-way valve 14 was added to the secondary channel 11, such as... Figure 1 As shown, the one-way valve 14 is located downstream of the miniature flow-limiting valve 12, specifically between the miniature flow-limiting valve 12 and the outlet of the secondary channel 11. The function of the one-way valve 14 is to ensure that the refrigerant can only flow in one direction in the secondary channel 11, that is, only from the sub-channel 1 acting as the lender to the sub-channel 1 acting as the borrower. This design can effectively prevent refrigerant reverse flow caused by system pressure fluctuations, and avoid refrigerant flowing back from the sub-channel 1 that originally needs cooling under non-borrowing conditions, thus preventing disruption of the stable operation of the system. The one-way valve 14 and the miniature flow-limiting valve 12 work together to ensure the directionality and reliability of the borrowing process, enabling the system's variable topology control strategy to be executed precisely.

[0073] Example 2

[0074] Please refer to Figure 4This embodiment provides an adaptive active cooling method based on the adaptive active cooling system with a variable topology as described in Embodiment 1. The method includes:

[0075] S100: Obtain temperature information, the temperature information including the first temperature corresponding to each of the heat exchange zones 2.

[0076] Specifically, in step S100, temperature data corresponding to each heat exchange zone 2 is collected in real time by a temperature sensor array arranged in each heat exchange zone 2 and recorded as the first temperature. This temperature data is transmitted to the control module as the basis for subsequent judgment and control.

[0077] S200: When it is determined that the first temperature of the first heat exchange zone is greater than or equal to the first set temperature and less than the second set temperature, the piezoelectric ceramic sheet 10 corresponding to the first heat exchange zone is controlled to vibrate at a set frequency, and the sealing part 9 is driven to move back and forth, so that the medium passes through the composite valve assembly 4 in the form of pulses.

[0078] Specifically, the first heat exchange zone refers to the heat exchange zone 2 that currently needs cooling. In step S200, the control module compares the acquired first temperature with a preset first set temperature and a second set temperature. When it is determined that the first temperature of a certain first heat exchange zone is within the range of being greater than or equal to the first set temperature and less than the second set temperature, it indicates that the zone has started to heat up, but has not yet reached the level of severe overheating. At this time, the control module applies an alternating voltage of a specific frequency to the piezoelectric ceramic plate 10 in the composite valve assembly 4 corresponding to the heat exchange zone 2. Under the drive of the high-frequency voltage, the piezoelectric ceramic plate 10 generates periodic expansion and contraction deformation, driving the sealing part 9 to perform high-frequency, small-amplitude reciprocating motion. This motion causes the flow channel opening to change rapidly and slightly periodically, resulting in the refrigerant passing through the composite valve assembly 4 in a pulsed form. The pulsed flow can significantly enhance the disturbance of the refrigerant, improve the heat exchange efficiency, and at the same time avoid the overcooling that may be caused by continuous high flow, achieving precise temperature control under moderate heat exchange requirements.

[0079] S300: When it is determined that the first temperature of the first heat exchange zone is greater than the second set temperature, the valve core 8 corresponding to the first heat exchange zone is controlled to open to the target opening degree so that the medium passes through the composite valve assembly 4 at a constant flow rate.

[0080] Specifically, in step S300, when the control module determines that the first temperature of the first heat exchange zone is greater than the second set temperature, it indicates that the zone faces the risk of overheating and requires maximum cooling capacity. At this time, the control module switches the control strategy, controlling the valve core 8 corresponding to the first heat exchange zone to open to a larger target opening degree (e.g., by driving an electric push rod). This allows the refrigerant to pass through the composite valve assembly 4 at a continuous, stable, and large flow rate, thereby providing powerful cooling to the overheated heat exchange zone 2 and achieving rapid temperature reduction.

[0081] Further, after causing the medium to pass through the composite valve assembly 4 in a pulsed manner, or causing the medium to pass through the composite valve assembly 4 at a constant flow rate, the method further includes:

[0082] S400: Real-time calculation of the first temperature drop rate in the first heat exchange zone;

[0083] S500: When the first temperature drop rate is less than the first set rate, obtain the first opening degree of the valve core 8 in the composite valve assembly 4 on the current sub-channel 1.

[0084] S600: When it is determined that the first opening is not the maximum opening, adjust the first opening to the maximum opening;

[0085] S700: When it is determined that the first opening is the maximum opening, control the first composite valve assembly and the first borrowing assembly to borrow refrigerant from the adjacent sub-channel 1; the first borrowing assembly is the borrowing assembly 3 on the secondary channel 11 between the current sub-channel 1 and the adjacent sub-channel 1, and the first composite valve assembly is the composite valve assembly 4 on the adjacent sub-channel 1.

[0086] Specifically, after the system allows the refrigerant to pass through the composite valve assembly 4 in a pulsed or constant flow, the control module continuously receives real-time temperature data transmitted by the temperature sensor array corresponding to the first heat exchange zone, and calculates the first temperature drop rate by the difference between two adjacent temperature detection values ​​and the time interval.

[0087] The control module compares the calculated first temperature drop rate with the preset first set rate: if the first temperature drop rate is greater than or equal to the first set rate, it indicates that the refrigerant flow rate of the current sub-channel 1 can meet the heat dissipation requirements, and the current working state of the composite valve assembly 4 remains unchanged; if the first temperature drop rate is less than the first set rate, it indicates that the current heat dissipation intensity is insufficient and further adjustment is required.

[0088] At this time, the control module obtains the real-time opening degree (i.e., the first opening degree) of the valve core 8 in the composite valve assembly 4 on the current sub-channel 1 through signal interaction: if it is determined that the first opening degree is not the maximum opening degree, the control module sends a control signal to the electric push rod of the composite valve assembly 4 to drive the valve core 8 to move in the direction of increasing the opening degree until the first opening degree reaches the maximum, so as to increase the refrigerant flow rate of the current sub-channel 1 and enhance the heat dissipation capacity; if it is determined that the first opening degree is the maximum opening degree, it indicates that the heat dissipation potential of the current sub-channel 1 has been fully released, and it is necessary to adjust the refrigerant of the adjacent sub-channel 1 by borrowing the component 3.

[0089] The control module then locks the borrowing component 3 (i.e., the first borrowing component) on the secondary channel 11 between the current sub-channel 1 and the adjacent sub-channel 1, and the composite valve component 4 (i.e., the first composite valve component) on the adjacent sub-channel 1, and sends action commands to both of them. By opening the secondary channel 11 and adjusting the refrigerant distribution ratio of the adjacent sub-channel 1, the refrigerant is borrowed from the adjacent sub-channel 1 to the current sub-channel 1, further improving the heat dissipation intensity of the first heat exchange area until the first temperature drop rate meets the requirements.

[0090] Further, step S700 includes:

[0091] S710: When it is determined that the first opening is the maximum opening, the miniature flow limiting valve 12 in the first borrowing component is opened.

[0092] Specifically, in step S710, the control module sends a command to the borrowing component 3 on the secondary channel 11 between the current sub-channel 1 and the adjacent sub-channel 1, driving the miniature flow restrictor 12 in the secondary channel 11 to switch from the closed state to the open state, opening the passage for the adjacent sub-channel 1 to deliver refrigerant to the current sub-channel 1, and at the same time, by setting the initial opening degree of the miniature flow restrictor 12, pressure fluctuations caused by a large amount of refrigerant rushing in instantly are avoided.

[0093] S720: Increase the second and third opening degrees to allow refrigerant to enter the current sub-channel 1 from the adjacent sub-channel 1; the second opening degree is the valve core opening degree of the first composite valve assembly, and the third opening degree is the opening degree of the regulating valve 13 in the adjacent sub-channel 1.

[0094] Specifically, in step S720, the control module synchronously acquires the valve core opening degree (i.e., the second opening degree) of the composite valve assembly 4 (i.e., the first composite valve assembly) on the adjacent sub-channel 1, and the opening degree (i.e., the third opening degree) of the regulating valve 13 in the adjacent sub-channel 1, and sends an opening degree increase command to the drive unit of both of them—increasing the second opening degree to increase the total refrigerant flow of the adjacent sub-channel 1, and increasing the third opening degree to increase the refrigerant distribution ratio entering the secondary channel 11, so that the refrigerant in the adjacent sub-channel 1 can flow stably to the current sub-channel 1 through the secondary channel 11 to supplement the refrigerant supply of the current sub-channel 1.

[0095] S730: Dynamically adjust the second opening degree and the third opening degree until the first temperature drop rate is greater than or equal to the second set rate.

[0096] Specifically, in step S730, the control module receives temperature data of the first heat exchange zone in real time, continuously calculates the first temperature drop rate, and dynamically adjusts the second and third openings according to the rate change. If the first temperature drop rate is still less than the second set rate, the second and third openings are increased slightly. If the first temperature drop rate is close to or exceeds the second set rate, the increase in opening is slowed down or the current opening is maintained until the first temperature drop rate is stably greater than or equal to the second set rate. Then, the opening adjustment is stopped, and the current borrowing state is maintained to maintain stable heat dissipation.

[0097] Furthermore, before determining that the first opening degree is the maximum opening degree and controlling the first composite valve assembly and the first borrowing assembly to operate in order to borrow refrigerant from the adjacent sub-channel 1, the method further includes:

[0098] Obtain the second temperature and the second temperature drop rate of the heat exchange region 2 corresponding to the adjacent sub-channel 1;

[0099] When it is determined that the second temperature is greater than the first set temperature and the rate of decrease of the second temperature is greater than the first set rate, the second opening degree and the third opening degree are obtained.

[0100] When it is determined that both the second opening degree and the third opening degree are not the maximum opening degree, the control of the first composite valve assembly and the first borrowing assembly is executed to borrow refrigerant from the adjacent sub-channel 1.

[0101] Specifically, when the control module determines that the first opening of the current sub-channel 1 is the maximum opening and intends to initiate the refrigerant borrowing process, it needs to confirm whether the cooling resources of the adjacent sub-channel 1 are available for borrowing. The specific steps are as follows:

[0102] First, the control module collects the real-time temperature (i.e., the second temperature) of the heat exchange area 2 corresponding to the adjacent sub-channel 1 through the temperature sensor array. At the same time, it calculates the temperature drop rate (i.e., the second temperature drop rate) of the heat exchange area 2 of the adjacent sub-channel 1 according to the same calculation logic as the first temperature drop rate, and transmits the two sets of data to the judgment unit of the control module.

[0103] Next, the control module compares the second temperature with the first set temperature and the second temperature drop rate with the first set rate. When the second temperature is greater than the first set temperature and the second temperature drop rate is greater than the first set rate, it indicates that the adjacent flow channel itself needs heat dissipation, there is no risk of overcooling, and the current heat dissipation capacity of the adjacent flow channel is redundant, so it can lend out refrigerant. At this time, it enters the next step of opening judgment. If the condition is not met, the lending process is paused, and the status change of the adjacent flow channel is monitored to avoid insufficient heat dissipation of the adjacent flow channel due to the lending of refrigerant.

[0104] Finally, after the above temperature and rate conditions are met, the control module obtains the valve core opening degree (i.e., the second opening degree) of the composite valve assembly 4 on the adjacent sub-channel 1 and the opening degree (i.e., the third opening degree) of the regulating valve 13 in the adjacent sub-channel 1 through signal interaction. Only when it is determined that the second opening degree and the third opening degree are both non-maximum opening degrees, indicating that the adjacent channel can compensate for the borrowed refrigerant by increasing its own opening degree without affecting its own heat dissipation, will step S700 be executed; if either opening degree has reached the maximum, the current state will be maintained first, and the borrowing will be started after the load of the adjacent channel decreases and the opening degree has room for adjustment.

[0105] Furthermore, after obtaining the second and third opening degrees, the process further includes:

[0106] When it is determined that the third opening is the maximum opening and the second opening is not the maximum opening, the micro flow limiting valve 12 in the first borrowing component is opened, and the second opening is increased.

[0107] Specifically, when the control module obtains the second and third opening degrees of the adjacent sub-channel 1, if the judgment result is that the third opening degree has reached the maximum opening degree and the second opening degree is not the maximum opening degree, it indicates that the regulating valve 13 in the adjacent sub-channel 1 can no longer further increase the proportion of refrigerant entering the secondary channel 11 in its distribution function by increasing the opening degree. However, the first composite valve assembly still has room to increase the total refrigerant flow rate. At this time, the following process is executed:

[0108] First, the control module sends a command to the borrowing component 3 between the current sub-channel 1 and the adjacent sub-channel 1, driving the miniature flow restrictor valve 12 in the secondary channel 11 to switch from the closed state to the open state, providing a physical path for the refrigerant flow from the adjacent sub-channel 1 to the current sub-channel 1.

[0109] Next, the control module sends an opening adjustment command to the composite valve assembly 4 on the adjacent sub-channel 1, driving its valve core 8 to move in the direction of increasing opening, gradually increasing the second opening. Since the third opening has reached its maximum, increasing the second opening can directly increase the total refrigerant flow of the adjacent sub-channel 1. With the distribution ratio of the regulating valve 13 fixed, the amount of refrigerant flowing through the secondary channel 11 will increase synchronously with the increase of the total flow, thereby realizing the effective borrowing of refrigerant from the current sub-channel 1.

[0110] Finally, during the process of increasing the second opening degree, the control module collects the temperature data of the first heat exchange zone in real time and continuously calculates the first temperature drop rate. When the first temperature drop rate reaches or exceeds the second set rate, the control module stops increasing the second opening degree and maintains the current second opening degree and the opening degree of the micro flow limiting valve 12 to ensure that the borrowed refrigerant amount can meet the heat dissipation requirements of the current sub-channel 1, and will not cause the heat dissipation of its own heat exchange zone 2 to become unbalanced due to the excessive total flow of the adjacent sub-channel 1.

[0111] Furthermore, after obtaining the second temperature and the second temperature decrease rate of the heat exchange region 2 corresponding to the adjacent sub-channel 1, the method further includes:

[0112] When it is determined that the second temperature is lower than the first set temperature and the rate of decrease of the first temperature is lower than the first set rate, the third opening is adjusted to zero.

[0113] Open the miniature flow limiting valve 12 in the first borrowing component and dynamically adjust the second opening degree until the first temperature drop rate is greater than or equal to the second set rate.

[0114] Specifically, when the control module obtains the second temperature and the first temperature drop rate of the heat exchange area 2 corresponding to the adjacent sub-channel 1, and the judgment result is that the second temperature is less than the first set temperature and the first temperature drop rate is less than the first set rate, it indicates that the heat exchange of the current sub-channel 1 is still insufficient, and the temperature of the heat exchange area 2 of the adjacent sub-channel 1 is low, there is no active heat dissipation requirement, and the cooling resources are redundant and sufficient. The following process is then executed:

[0115] First, the control module sends an opening adjustment command to the regulating valve 13 in the adjacent sub-channel 1, driving the regulating valve 13 to move in the closing direction until the third opening drops to zero. This operation cuts off the flow path of the refrigerant in the adjacent sub-channel 1 to its own heat exchange area 2, so that the refrigerant in the adjacent sub-channel 1 is no longer used for its own heat dissipation and can be borrowed from the current sub-channel 1, avoiding the ineffective allocation of cooling resources in adjacent channels.

[0116] Next, the control module synchronously sends instructions to the borrowing component 3 between the current sub-channel 1 and the adjacent sub-channel 1, driving the miniature flow restrictor valve 12 in the secondary channel 11 to switch from the closed state to the open state, opening the only passage for the refrigerant to flow from the adjacent sub-channel 1 to the current sub-channel 1, and at the same time setting the initial opening degree of the miniature flow restrictor valve 12 to a large level, providing basic conditions for the rapid flow of refrigerant.

[0117] Finally, the control module sends a dynamic opening adjustment command to the composite valve assembly 4 on the adjacent sub-channel 1, driving its valve core 8 to gradually increase the second opening. During the adjustment process, the control module collects the temperature data of the first heat exchange zone in real time and continuously calculates the first temperature drop rate; if the first temperature drop rate is still less than the second set rate, the second opening is increased slightly to increase the total refrigerant flow of the adjacent sub-channel 1, thereby increasing the amount of refrigerant flowing to the current sub-channel 1 through the secondary channel 11; when the first temperature drop rate reaches or exceeds the second set rate, the adjustment of the second opening is stopped, and the current opening state is maintained to ensure that the current sub-channel 1 receives a stable refrigerant supply, while avoiding pressure abnormalities in the adjacent sub-channel 1 due to excessive flow.

[0118] The above description is merely a preferred embodiment of this application and an explanation of the technical principles employed. Those skilled in the art should understand that the scope of the invention involved in this application is not limited to technical solutions formed by specific combinations of the above-described technical features, but should also cover other technical solutions formed by arbitrary combinations of the above-described technical features or their equivalents without departing from the inventive concept. For example, technical solutions formed by substituting the above features with (but not limited to) technical features with similar functions disclosed in this application.

Claims

1. An adaptive active cooling system with a variable topology, characterized in that, include: The flow channel assembly includes multiple parallel sub-flow channels (1), the two ends of which are respectively connected to the refrigerant inlet and refrigerant outlet of the refrigerant circulation device; a heat exchange area (2) is provided on the sub-flow channel (1), and a borrowing component (3) is provided between adjacent sub-flow channels (1), the borrowing component (3) is used to borrow refrigerant from adjacent sub-flow channels (1); Multiple composite valve assemblies (4), each of the composite valve assemblies (4) is located at one end of the sub-flow channel (1) that is connected to the refrigerant outlet; Multiple temperature sensor arrays are provided, each of which corresponds to a heat exchange area (2). The temperature sensor array is electrically connected to the corresponding composite valve assembly (4) through a control module to detect the temperature of the heat exchange area (2) and drive the composite valve assembly (4) through the control module to adjust the opening and closing and flow rate of any one of the sub-channels (1). The borrowing component (3) includes: Secondary channel (11), which connects two adjacent sub-channels (1), and the connection position is located between the composite valve assembly (4) and the heat exchange area (2); A miniature flow limiting valve (12) is provided in the secondary channel (11) and is used to control the opening and closing of the secondary channel (11) and the flow rate. The regulating valve (13) is located in the sub-channel (1) connected to the inlet of the secondary channel (11), and is positioned between the inlet of the secondary channel (11) and the heat exchange area (2).

2. The adaptive active cooling system with variable topology according to claim 1, characterized in that, The composite valve assembly (4) includes: Valve frame (5), the valve frame (5) is provided with inlet (6) and outlet (7), valve core (8) is movably installed in the cavity of the valve frame (5), and the front end of the valve core (8) is provided with a sealing part (9) for adjusting the opening degree. A piezoelectric ceramic sheet (10) is embedded in the front end of the valve core (8). The piezoelectric ceramic sheet (10) connects the valve core (8) and the sealing part (9) and is electrically connected to the control module.

3. The adaptive active cooling system with variable topology according to claim 2, characterized in that, The borrowing component (3) also includes a one-way valve (14), which is located in the secondary channel (11) and positioned between the micro flow restrictor (12) and the outlet of the secondary channel (11).

4. An adaptive active heat dissipation method, characterized in that, Based on the adaptive active cooling system with variable topology as described in claim 3, the method includes: Acquire temperature information, which includes a first temperature corresponding to each heat exchange zone (2); When it is determined that the first temperature of the first heat exchange zone is greater than or equal to the first set temperature and less than the second set temperature, the piezoelectric ceramic sheet (10) corresponding to the first heat exchange zone is controlled to vibrate at a set frequency, and the sealing part (9) is driven to move back and forth so that the medium passes through the composite valve assembly (4) in the form of pulses. When it is determined that the first temperature of the first heat exchange zone is greater than the second set temperature, the valve core (8) corresponding to the first heat exchange zone is controlled to open to the target opening degree so that the medium passes through the composite valve assembly (4) at a constant flow rate.

5. The adaptive active heat dissipation method according to claim 4, characterized in that, After causing the medium to pass through the composite valve assembly (4) in a pulsed manner, or causing the medium to pass through the composite valve assembly (4) at a constant flow rate, the method further includes: Calculate the first temperature drop rate of the first heat exchange zone in real time. When the first temperature drop rate is less than the first set rate, the first opening degree of the valve core (8) in the composite valve assembly (4) on the current sub-channel (1) is obtained; If it is determined that the first opening is not the maximum opening, adjust the first opening to the maximum opening; When the first opening is determined to be the maximum opening, the first composite valve assembly and the first borrowing assembly are controlled to operate to borrow refrigerant from the adjacent sub-channel (1); the first borrowing assembly is the borrowing assembly (3) on the secondary channel (11) between the current sub-channel (1) and the adjacent sub-channel (1), and the first composite valve assembly is the composite valve assembly (4) on the adjacent sub-channel (1).

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