A thermal load testing system and a thermal load testing method

Abstract

The present invention discloses a thermal load test system and a test method. The system includes at least one server and multiple thermal load test fixtures, the thermal load test fixture includes a casing, and a simulated heating structure and a main control structure arranged in the casing; the simulated heating structure includes multiple heating components, and the multiple heating components are used as components that generate heat in the simulated server, and are used to generate heat simultaneously or separately; the main control structure includes a main control board and multiple control switches, and the main control board is respectively connected to the multiple control switches and the multiple heating components; the multiple heating components are connected to the main control board and the multiple control switches to form a power supply path; the main control board controls the opening and closing of the heating components according to the opening and closing of the multiple control switches to test the cooling system. The thermal load test fixture in the present invention simulates the server to test immersion cooling systems of different models and types, which can reduce the test risk, improve the test efficiency, and reduce the test cost.

Description

Technical Field

[0001] The present invention relates to the technical field of server cooling system testing, and in particular to a heat load testing system and a testing method. Background Art

[0002] In order to reduce the PUE (Power Usage Effectiveness) of data centers, data center HVAC system energy-saving technology is actively explored in the direction of liquid cooling. According to whether the coolant is in direct contact with the heat-generating components of the server, the computer room liquid cooling is divided into direct contact liquid cooling and indirect contact liquid cooling. Among them, the mainstream direct contact liquid cooling in the industry is divided into immersion type and spray type.

[0003] In recent years, immersion cooling has gradually increased its market share as an efficient solution for server heat dissipation. Immersion cooling systems are mainly used in computing power industry, data centers, artificial intelligence, high-performance computing and other fields.

[0004] At present, after the development and production of the immersion cooling system is completed, a comprehensive system test is required to test its heat dissipation capacity. The full load test of a small single-phase immersion cooling system (2U or 4U) can be deployed with a fully loaded or lightly loaded server. The number of nodes is small, the number of materials is relatively small, the test environment construction and stress testing time are short, and the impact on the advancement of the entire test project is small. The full load test of a large single-phase immersion cooling system (12U, 18U or 54U) requires more servers to be deployed. The server cost is huge, the test materials are relatively large, the test environment construction and stress testing time are relatively long, and the use of a simulated computer room for testing is different from the actual application scenario. The process of evaluating the heat dissipation capacity of the entire system is relatively complicated. Therefore, when testing a large single-phase immersion cooling system, it is generally necessary to deliver the immersion cooling system and the server to the customer's computer room, and then perform heat dissipation and related tests in the computer room. The product delivery risk is high, the test material cost is high, the test efficiency is low, and the failure rate and maintenance costs are increased.

[0005] In the process of implementing the present invention, the inventors found that there are at least the following problems in the prior art:

[0006] Currently, when testing large single-phase immersion cooling systems, the test time is long and the test risk is high, resulting in low test efficiency. Summary of the invention

[0007] The purpose of the present invention is to provide a thermal load test system and test method to solve the technical problems existing in the prior art that when testing a large single-phase immersion cooling system, the test time is long, the test risk is high, and the test efficiency is low.

[0008] The various technical effects that can be produced by the preferred technical solutions among the various technical solutions provided by the present invention are described in detail below.

[0009] To achieve the above object, the present invention provides the following technical solutions:

[0010] In a first aspect, the present invention provides a thermal load test fixture, comprising: a housing, and a simulated heating structure and a main control structure arranged in the housing;

[0011] The simulated heating structure includes a plurality of heating components, and the plurality of heating components are used as components generating heat in the simulated server, and are used to generate heat simultaneously or separately;

[0012] The main control structure includes a main control board and multiple control switches, the main control board is respectively connected to the multiple control switches and the multiple heating components; the multiple heating components are connected to the main control board and the multiple control switches to form a power path; the main control board controls the opening and closing of the heating components according to the opening and closing of the multiple control switches to test the cooling system.

[0013] Optionally, the simulated heating structure further comprises a fixing component, a plurality of filling seats are evenly arranged on the fixing component, and the heating components are arranged in the filling seats in a one-to-one correspondence.

[0014] Optionally, the thermal load test fixture further includes a filling structure and an adjustment structure;

[0015] The filling structure is located at the bottom of the simulated heating structure and is fixedly connected to the inner bottom wall of the housing, so as to increase the liquid volume occupied by the simulated heating structure;

[0016] The regulating structure is located at the side of the filling structure and is connected to the inner bottom wall of the housing. The regulating structure is used to adjust the liquid volume occupied by the simulated heating structure.

[0017] Optionally, A heating components are connected in parallel to form a heating module; the heating modules are connected to the control switches in a one-to-one correspondence through the main control board, and one heating module is controlled by one control switch.

[0018] Optionally, a power taking component is provided on the main control board, and the power taking component is connected to an external power supply device to take power from the external power supply device to supply the simulated heating structure;

[0019] The main control board is also provided with a positive electrode interface and a negative electrode interface, and the positive electrode and the negative electrode of each heating module are connected to the positive electrode interface and the negative electrode interface on the main control board through connecting wires respectively.

[0020] Optionally, a display light is provided in each of the control switches; the display light is used to display the switch state of the heating module corresponding to the control switch.

[0021] Optionally, the thermal load test fixture further includes a power test interface, which is located on the side wall of the housing and connected to the main control structure, and is used to measure the power of the simulated heating structure.

[0022] In a second aspect, the present invention provides a thermal load testing system, comprising at least one server and a plurality of thermal load testing fixtures as described above, wherein the server and the plurality of thermal load testing fixtures are deployed in a liquid cooling cabinet of a cooling system to be tested; wherein the liquid volume and power occupied by one of the thermal load testing fixtures match the liquid volume and power occupied by one of the servers;

[0023] The cooling system is provided with a cold capacity distribution unit, which is connected to the liquid cooling cabinet through a pipeline and is used to control the distribution of cold capacity in the liquid cooling cabinet; wherein the total heat of the server and the heat load test fixture arranged in the liquid cooling cabinet does not exceed the maximum heat dissipation capacity of the cold capacity distribution unit.

[0024] Optionally, the heat load test fixture includes an adjustment structure, and the adjustment structure includes a plurality of adjustment members;

[0025] The thermal load test fixture adjusts the number of the adjusting parts according to the liquid volume and power of the server, so that the liquid volume and power of the thermal load test fixture match the liquid volume and power of the server.

[0026] In a third aspect, the present invention provides a heat load testing method, which is applied to the heat load testing system described above, comprising:

[0027] Installing at least one server and at least one heat load test fixture in the liquid cooling cabinet according to the size of the liquid cooling cabinet in the cooling system;

[0028] Determine the maximum heat removal capacity of the cooling distribution unit in the cooling system;

[0029] Adjusting the occupied liquid volume and power of the plurality of thermal load test fixtures according to the maximum heat dissipation capacity in the cooling capacity distribution unit; wherein the occupied liquid volume and power of each thermal load test fixture match the occupied liquid volume and power of the server;

[0030] A plurality of the servers and a plurality of the heat load test fixtures are turned on to test the cooling system.

[0031] Implementing one of the above technical solutions of the present invention has the following advantages or beneficial effects:

[0032] The function of the test fixture described in the present invention is to simulate the heat generation of the server and then test the cooling system. The multiple heating components arranged in the simulated heating structure are used as components that generate heat in the simulated server, and are used to generate heat simultaneously or separately. During the test process, the number of heating components turned on can be adjusted to adjust the heating power of the thermal load test fixture, so as to match the power of the server and achieve better test results. And whether the thermal load test fixture is testing a large single-phase immersion cooling system, a small single-phase immersion cooling system or other types of immersion cooling systems, it can adjust the power of the thermal load test fixture according to the situation, saving test time, reducing test risks, improving test efficiency, and reducing test costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. It is obvious that the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative work. In the drawings:

[0034] Figure 1 It is a schematic diagram of the overall structure of the first embodiment of the present invention;

[0035] Figure 2 It is a schematic diagram of the housing disassembly structure of the first embodiment of the present invention;

[0036] Figure 3 This is an exploded view of the overall structure of the first embodiment of the present invention;

[0037] Figure 4 is a structural diagram of Embodiment 2 of the present invention;

[0038] Figure 5 It is a flowchart of the third embodiment of the present invention.

[0039] In the figure: 1. casing; 11. bottom cover; 111. stud; 12. upper cover; 2. simulated heating structure; 21. heating component; 22. heating module; 23. fixing component; 24. filling seat; 3. main control structure; 31. main control board; 311. power taking component; 312. positive electrode interface; 313. negative electrode interface; 32. control switch; 321. display light; 4. filling structure; 5. adjustment structure; 51. adjustment part; 52. mounting hole; 6. power test interface. DETAILED DESCRIPTION

[0040] In order to make the purpose, technical solutions and advantages of the present invention clearer, the various exemplary embodiments to be described below will refer to the corresponding drawings, which constitute a part of the exemplary embodiments, wherein various exemplary embodiments that may be used to implement the present invention are described. Unless otherwise indicated, the same numbers in different drawings represent the same or similar elements. The implementation methods described in the following exemplary embodiments do not represent all implementation methods consistent with the present disclosure. It should be understood that they are only examples of processes, methods, devices, etc. that are consistent with some aspects of the present disclosure as detailed in the attached claims, and other embodiments may also be used, or the embodiments listed herein may be modified in structure and function without departing from the scope and essence of the present invention.

[0041] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", etc. indicate the orientation or positional relationship based on the drawings, which is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the elements referred to must have a specific orientation, be constructed and operated in a specific orientation. The terms "first", "second", etc. are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. The term "multiple" means two or more. The terms "connected" and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, an integral connection, a mechanical connection, an electrical connection, a communication connection, a direct connection, an indirect connection through an intermediate medium, and can be the internal connection of two elements or the interaction relationship between two elements. The term "and / or" includes any and all combinations of one or more related listed items. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to the specific circumstances.

[0042] In order to illustrate the technical solution of the present invention, a specific embodiment is used below for description, and only the parts related to the embodiment of the present invention are shown.

[0043] Embodiment 1:

[0044] like Figure 1-3As shown, the present invention provides a thermal load test fixture, including: a casing 1, and a simulated heating structure 2 and a main control structure 3 arranged in the casing 1; the simulated heating structure 2 includes a plurality of heating components 21, and the plurality of heating components 21 are components that generate heat in the simulated server, and are used to generate heat simultaneously or separately; the main control structure 3 includes a main control board 31 and a plurality of control switches 32, and the main control board 31 is respectively connected to the plurality of control switches 32 and the plurality of heating components 21; the plurality of heating components 21 are connected to the main control board 31 and the plurality of control switches 32 to form a power supply path; the main control board 31 controls the opening and closing of the heating components 21 according to the opening and closing of the plurality of control switches 32, so as to test the cooling system.

[0045] Specifically, if Figure 2 As shown, the housing 1 includes a bottom cover 11 and an upper cover 12. The bottom cover 11 is configured as a slot structure, and a cavity is formed in the slot structure for accommodating the simulated heating structure 2 and the main control structure 3. After the simulated heating structure 2 and the main control structure 3 are installed in the bottom cover 11, the upper cover 12 can be fixed on the top of the bottom cover 11 by screws or bonding to protect the multiple structures installed in the bottom cover 11. It should be noted that the size of the housing 1 can be a standard server size, which can be 1U, .

[0046] Among them, the role of the thermal load test fixture is to simulate the server to generate heat and then test the cooling system. The multiple heating components 21 set in the simulated heating structure 2 are used as components that generate heat in the simulated server, and are used to generate heat simultaneously or separately. During the test, the number of heating components 21 turned on can be adjusted to adjust the heating power of the thermal load test fixture, so as to match the power of the server and achieve better test results.

[0047] As an optional implementation, Figure 3 As shown, the simulated heating structure 2 also includes a fixing component 23, on which a plurality of filling seats 24 are evenly arranged, and the heating components 21 are arranged one by one in the filling seats 24. Specifically, each heating component 21 is fixed in the filling seat 24 on the fixing component 23 by screws or bolts, and is stably connected to the filling seat 24. The filling seats 24 are preferably arranged in an 8×6 manner on the fixing component 23.

[0048] It should be noted that the material of the fixing component 23 can be plastic or metal. In this embodiment, the material of the fixing component 23 is preferably metal, which can ensure that the heating component 21 is stably installed and can also ensure that the heat generated by the heating component 21 is correctly conducted to the fixing component 23, thereby expanding the heat dissipation area of ​​the heating component 21.

[0049] As an optional implementation, Figure 3 As shown, in the present embodiment, a plurality of heating components 21 are provided, and A heating components 21 are connected in parallel to form a heating module 22; the heating modules 22 are connected one-to-one with the control switches 32 through the main control board 31, and one heating module 22 is controlled by one control switch 32. Specifically, one heating module 22 is switched on or off by a corresponding control switch 32. When the control switch 32 controls a heating module 22 to turn on or off, the power supply of the heating module 22 is cut off through the main control board 31. In the present embodiment, the heating component 21 can be selected as a small-sized, high-power aluminum resistor with its own heat sink, which has good heat dissipation capability. As Figure 3 As shown, in this embodiment, eight heating components 21 can be connected in parallel to form a heating module 22, and a total of six groups are provided. Each heating module 22 forms a power path with the control switch 32 and the main control board 31 to ensure that the heating module 22 is correctly shut down under the action of the control switch 32, and the heating power of the heating component 21 is correctly adjusted, which is used to adjust the heating power of the test fixture and has strong adjustment performance.

[0050] It should be noted that the heating component 21 in this embodiment is preferably a resistor, and every 8 resistors form a heating module 22, and six heating modules 22 are provided, and each heating module 22 is controlled by a separate control switch 32. Among them, the power of each resistor after being energized is 50W, and the total power of a heating module 22 after being energized is 400W. One heating module 22 corresponds to one control switch 32. Therefore, the thermal load test fixture recorded in this embodiment can provide six different powers, and the highest power is 2.4KW. This embodiment can adjust the power according to the cooling system to be tested, and has good adjustable performance.

[0051] As an optional implementation, Figure 3 As shown, the main control structure 3 includes a main control board 31 and a plurality of control switches 32. The control switches 32 are connected to the main control board 31, and the plurality of heating components 21 are also connected to the main control board 31. The main control board 31 is connected to an external power source for supplying power to the plurality of heating components 21. The control switch 32 can control the control state of the main control board 31, and then the main control board 31 can switch the working state of the plurality of heating components 21 according to the state of the control switch 32.

[0052] The main control structure 3 includes a main control board 31, which is used to connect to an external power supply to power the thermal load test fixture. The main control board 31 is provided with a power supply component 311, which is connected to an external power supply device to supply power to the simulated heating structure 2; the main control board 31 is also provided with a positive electrode interface 312 and a negative electrode interface 313, and the positive and negative electrodes of each heating module 22 are respectively connected to the positive electrode interface 312 and the negative electrode interface 313 on the main control board 31 through connecting wires.

[0053] Specifically, if Figure 3 As shown, the power supply component 311 provided on the main control board 31 is used to connect to an external power supply for drawing electricity for use in the thermal load test fixture. The power supply board is provided on the side of the fixing component 23 and can be fixedly connected to the inner bottom wall of the casing 1 by screws. The power supply component 311 is preferably an alligator clip, and the thermal load test fixture draws electricity from the 54V centrally powered copper busbar through the alligator clip for use by the heating component 21 in the thermal load test fixture. In addition, a positive electrode interface 312 and a negative electrode interface 313 are also provided on the main control board 31. The positive and negative electrodes of the heating module 22 formed by A heating components 21 connected in parallel are respectively connected to the positive electrode interface 312 and the negative electrode interface 313 on the main control board 31 through connecting wires, so that a single heating module 22 is controlled by a single control switch 32, which has good adjustability.

[0054] The main control structure 3 also includes a control switch 32, the number of which is the same as the number of the heating modules 22, and there is a one-to-one correspondence between the control switch 32 and the heating module 22, and one control switch 32 controls the shutdown of one heating module 22. In this embodiment, since six heating modules 22 are provided, six control switches 32 are provided accordingly. The control switch 32, the heating module 22, and the positive electrode interface 312 and the negative electrode interface 313 on the power supply board are connected to form a complete power supply path, which can ensure that the heating module 22 can heat normally and can also ensure that it can be shut down according to the situation, thereby ensuring stability during the test process.

[0055] It should be noted that if Figure 3 As shown, a display light 321 is provided inside the control switch 32, and the display light 321 is used to display the switch state of the heating module 22 corresponding to the control switch 32. The display light 321 can be a small LED light and is embedded inside the control switch 32. In addition, an on and off mark is also provided inside the control switch 32.

[0056] As an optional implementation, Figure 2-3As shown, the thermal load test fixture also includes a filling structure 4 and an adjusting structure 5; the filling structure 4 is located at the bottom of the simulated heating structure 2, and is fixedly connected to the inner bottom wall of the casing 1, and is used to increase the liquid volume occupied by the simulated heating structure 2; the adjusting structure 5 is located on the side of the filling structure 4, and is fixedly connected to the inner bottom wall of the casing 1, and the adjusting structure 5 is used to adjust the liquid volume occupied by the simulated heating structure 2.

[0057] Specifically, if Figure 3 As shown, the thermal load test fixture also includes a filling structure 4, and the filling structure 4 is fixedly connected to the inner bottom wall of the bottom cover 11, which can be specifically fixed by screws. The fixing component 23 in the simulated heating structure 2 is arranged above the filling structure 4, and is used to carry and fix the heating component 21. During the operation of the thermal load test fixture, the heating component 21 will generate heat. Adding the filling structure 4 between the simulated heating structure 2 and the casing 1 can increase the counterweight while also adjusting the occupied liquid volume between the entire thermal load test fixture and the cooling system. It should be noted that the shape and size of the filling structure 4 in this embodiment are consistent with the shape and size of the fixing component 23. The filling structure 4 is preferably bakelite.

[0058] More specifically, Figure 2-3 As shown, the thermal load test fixture also includes an adjustment structure 5, which is located on the side of the filling structure 4 and is detachably connected to the inner bottom wall of the bottom cover 11. The adjustment structure 5 includes a plurality of adjustment members 51, the material of the adjustment members 51 is EPP filler, and each adjustment member 51 is provided with a mounting hole 52, and the mounting hole 52 is a stepped mounting hole 52. On the inner bottom wall of the bottom cover 11, a stud 111 is provided at a position corresponding to the mounting hole 52 in the plurality of adjustment members 51, and the adjustment member 51 is connected to the stud 111 on the bottom cover 11 by a screw to achieve the connection between the adjustment member 51 and the bottom cover 11. In the actual test process of the thermal load test fixture, the number of adjustment members 51 in the adjustment structure 5 can be changed according to the actual situation, the screws in the mounting hole 52 on the adjustment member 51 can be loosened or tightened, and the adjustment member 51 can be removed or installed from the bottom cover 11 to change the overall liquid volume and impedance of the thermal load test fixture to improve the accuracy and stability of the test. It should be noted that there are at most thirteen adjusting members 51 in the adjusting structure 5 .

[0059] like Figure 3As shown, in this embodiment, a maximum of 13 adjusting members 51 are provided. Among them, the volume of each adjusting member 51 is 0.102 liters, and the volume of the heat load test fixture when it is not equipped with the adjusting member 51 is 5.874 liters. For each additional adjusting member 51 assembled, the liquid volume occupied by the heat load test fixture will increase by 0.102 liters accordingly, that is, by adjusting the number of adjusting members 51, the liquid volume occupied by the heat load test fixture can be changed between 5.874 liters and 7.2 liters. In this way, the liquid volume occupied by the heat load test fixture is adjusted to be as close to the liquid volume occupied by the server as possible, and at the same time, it can meet the testing requirements of liquid cooling cabinets in various types of cooling systems.

[0060] As an optional embodiment, the thermal load test fixture also includes a power test interface 6, which is located on the side wall of the housing 1 and connected to the main control structure 3. The power test interface 6 is used to measure the power of the simulated heating structure 2. Specifically, the functional test interface is located on the side of the housing 1 and is located on the same side as the control switch 32. One end of the functional test structure is connected to the main control structure 3, and the other end is connected to an external device through a test line. The external device can test the power of the thermal load test fixture to simulate the heating structure 2 during the test through the power test interface 6.

[0061] The function of the test fixture described in this embodiment is to simulate the heat generation of the server and then test the cooling system. The multiple heating components provided in the simulated heating structure serve as components that generate heat in the simulated server, and are used to generate heat simultaneously or separately. During the test process, the number of heating components turned on can be adjusted to adjust the heating power of the heat load test fixture, so as to match the power of the server and achieve better test results. And whether the heat load test fixture is testing a large single-phase immersion cooling system, a small single-phase immersion cooling system or other types of immersion cooling systems, it can adjust the power of the heat load test fixture according to the situation, saving test time, reducing test risks, improving test efficiency, and reducing test costs.

[0062] The embodiment is only a specific example and does not represent only one implementation mode of the present invention.

[0063] Embodiment 2:

[0064] Based on the same inventive concept, the present invention also provides a thermal load testing system, such as Figure 4As shown, it includes at least one server and multiple heat load test fixtures described in Example 1, and the server and multiple heat load test fixtures are deployed in a liquid cooling cabinet to be tested; wherein the liquid volume and power of a heat load test fixture match the liquid volume and power of a server; a cold energy distribution unit is provided in the liquid cooling cabinet, and the cold energy distribution unit is used to control the distribution of cold energy in the liquid cooling cabinet; wherein the total heat of the server and the heat load test fixture arranged in the liquid cooling cabinet does not exceed the maximum heat dissipation capacity of the cold energy distribution unit.

[0065] Specifically, the cooling system includes a liquid cooling cabinet. When testing the cooling system, the server and multiple heat load test fixtures are placed in the liquid cooling cabinet.

[0066] When using the heat load test system described in this embodiment to verify the heat dissipation capacity of the cooling system, the number and power of the heat load test fixture can be adjusted according to the actual heat dissipation capacity of the liquid cooling cabinet. In the actual test process, 1-2 servers can be deployed at the location where the heat dissipation of the liquid cooling cabinet is the worst, and the heat load test fixture described in Example 1 is deployed at the remaining locations. The heat load test fixture needs to adjust the number of adjustment parts and the number of heating modules in the adjustment structure according to the liquid volume and power of the deployed servers, so that the liquid volume and power of the heat load test fixture are as close as possible to the deployed servers. At the same time, the total heat of the entire liquid cooling cabinet does not exceed the maximum heat dissipation capacity of the cooling distribution unit.

[0067] In Example 1, it is recorded that the heat load test fixture is provided with a maximum of thirteen adjustment parts, each of which has a volume of 0.102 liters. The volume of the heat load test fixture without adjustment parts is 5.874 liters. For each additional adjustment part assembled, the liquid volume occupied by the heat load test fixture will increase by 0.102 liters accordingly, that is, by adjusting the number of adjustment parts, the liquid volume occupied by the heat load test fixture varies between 5.874 liters and 7.2 liters. In this way, the liquid volume occupied by the heat load test fixture is adjusted to be as close as possible to the liquid volume occupied by the server. The following is an example:

[0068] If an engineering practice verification test is to be conducted on a single-phase immersion cooling system with a maximum heat dissipation capacity of 15KW@12U for the cooling distribution unit, the power of the 2U server is 3KW, and the remaining 10U positions are all deployed with heat load test fixtures. The power of each heat load test fixture is 1.2KW. The three control switches in the heat load test fixture are turned on to connect the corresponding heating modules. The power of each heating module is 400W, and the total power of 3 rows is 1.2KW. Among them, the position of the connected heating module can be adjusted according to the distribution of the heat source in the server. After deployment according to the above method, the total heat generation in the entire liquid cooling cabinet is 15KW, which just meets the maximum heat dissipation capacity of the cooling distribution unit. In this way, the cooling distribution unit can control the inlet temperature and flow rate of the liquid cooling cabinet by adjusting the inlet water temperature and the circulation temperature difference of the pump.

[0069] The thermal load testing system described in this embodiment can adjust power according to the maximum heat dissipation capacity of the cooling system's cooling distribution unit, ensuring correct testing of the cooling system, ensuring the accuracy and reliability of the test results, saving testing costs, reducing testing risks, and improving testing efficiency.

[0070] Embodiment three:

[0071] Based on the same inventive concept, the present invention also provides a thermal load testing method, which is applied to the thermal load testing system described in the second embodiment. Figure 5 As shown, including:

[0072] S10, installing at least one server and at least one heat load test fixture in the liquid cooling cabinet according to the size of the liquid cooling cabinet in the cooling system;

[0073] S20, confirming the maximum heat removal capacity of the cooling capacity distribution unit in the cooling system;

[0074] S30, adjusting the occupied liquid volume and power of the plurality of thermal load test fixtures according to the maximum heat removal capacity in the cooling capacity distribution unit; wherein the occupied liquid volume and power of each thermal load test fixture match the occupied liquid volume and power of the server;

[0075] S40, starting the plurality of servers and the plurality of heat load test fixtures to test the cooling system.

[0076] Specifically, when testing the cooling system, it is necessary to deploy multiple servers and multiple heat load test fixtures in the liquid cooling cabinet according to the size of the liquid cooling cabinet of the cooling system to ensure that the liquid volume and power of the server can be simulated. After placing the corresponding servers and heat load test fixtures in the liquid cooling cabinet, the liquid volume occupied by the heat load test fixture will be adjusted according to the maximum heat dissipation capacity of the cold distribution unit in the liquid cooling cabinet to ensure the accuracy of the test and the reliability of the test results. After the liquid volume and power of the heat load test fixture are adjusted, the cooling system can be tested. The following is an example:

[0077] If an engineering practice verification test is to be conducted on a single-phase immersion cooling system with a maximum heat dissipation capacity of 15KW@12U for the cooling distribution unit, the power of the 2U server is 3KW, and the remaining 10U positions are all deployed with heat load test fixtures. The power of each heat load test fixture is 1.2KW. The three control switches in the heat load test fixture are turned on to connect the corresponding heating modules. The power of each heating module is 400W, and the total power of 3 rows is 1.2KW. Among them, the position of the connected heating module can be adjusted according to the distribution of the heat source in the server. After deployment according to the above method, the total heat generation in the entire liquid cooling cabinet is 15KW, which just meets the maximum heat dissipation capacity of the cooling distribution unit. In this way, the cooling distribution unit can control the inlet temperature and flow rate of the liquid cooling cabinet by adjusting the inlet water temperature and the circulation temperature difference of the pump.

[0078] The heat load testing method described in this embodiment can adjust the power according to the maximum heat dissipation energy level of the cooling system's cooling distribution unit to ensure the correct testing of the cooling system, which can save testing costs, reduce testing risks, and improve testing efficiency.

[0079] The above description is only the preferred embodiment of the present invention. It is known to those skilled in the art that various changes or equivalent substitutions may be made to these features and embodiments without departing from the spirit and scope of the present invention. In addition, under the teachings of the present invention, these features and embodiments may be modified to adapt to specific circumstances and materials without departing from the spirit and scope of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of this application belong to the protection scope of the present invention.

Claims

1. A thermal load testing system, characterized in that: It comprises at least one server and a plurality of heat load test fixtures, wherein the server and the plurality of heat load test fixtures are deployed in a liquid cooling cabinet of a cooling system to be tested; wherein the liquid volume and power occupied by one of the heat load test fixtures match the liquid volume and power occupied by one of the servers; The thermal load test fixture comprises a housing (1), and a simulated heating structure (2) and a main control structure (3) arranged in the housing (1); The simulated heating structure (2) comprises a plurality of heating components (21), the plurality of heating components (21) serving as components generating heat in the simulated server, and being used to generate heat simultaneously or separately; The main control structure (3) comprises a main control board and a plurality of control switches (32), the main control board being connected to the plurality of control switches (32) and the plurality of heating components (21) respectively; the plurality of heating components (21) are connected to the main control board and the plurality of control switches (32) to form a power supply path; the main control board controls the opening and closing of the heating components (21) according to the opening and closing of the plurality of control switches (32) to test the cooling system; The cooling system is provided with a cold capacity distribution unit, which is connected to the liquid cooling cabinet through a pipeline and is used to control the distribution of cold capacity in the liquid cooling cabinet; wherein the total heat of the server and the heat load test fixture arranged in the liquid cooling cabinet does not exceed the maximum heat dissipation capacity of the cold capacity distribution unit.

2. The heat load testing system according to claim 1, characterized in that: The simulated heating structure (2) further comprises a fixing component (23), on which a plurality of filling seats (24) are evenly arranged, and the heating components (21) are arranged in a one-to-one correspondence within the filling seats (24).

3. The heat load testing system according to claim 1, characterized in that: The thermal load test fixture further comprises a filling structure (4) and an adjustment structure (5); The filling structure (4) is located at the bottom of the simulated heating structure (2), and is fixedly connected to the inner bottom wall of the housing (1), and is used to increase the liquid volume occupied by the simulated heating structure (2); The regulating structure (5) is located on the side of the filling structure (4) and is connected to the inner bottom wall of the housing (1). The regulating structure (5) is used to adjust the liquid volume occupied by the simulated heating structure (2).

4. The heat load testing system according to claim 3, characterized in that: The adjustment structure (5) comprises a plurality of adjustment members (51), the number of which can be adjusted according to the liquid volume occupied and the power of the server, so that the liquid volume occupied and the power of the heat load test fixture match the liquid volume occupied and the power of the server.

5. The heat load testing system according to claim 1, characterized in that: A heating components (21) are connected in parallel to form a heating module (22); the heating modules (22) are connected to the control switches (32) in a one-to-one correspondence via the main control board, and one heating module (22) is controlled by one control switch (32).

6. The heat load testing system according to claim 5, characterized in that: The main control board is provided with a power supply component (311), the power supply component (311) is connected to an external power supply device, and supplies power from the external power supply device to the simulated heating structure (2); The main control board is also provided with a positive electrode interface (312) and a negative electrode interface (313), and the positive electrode and negative electrode of each heating module (22) are respectively connected to the positive electrode interface (312) and the negative electrode interface (313) on the main control board via connecting wires.

7. The heat load testing system according to claim 5, characterized in that: A display light (321) is provided in each of the control switches (32); the display light (321) is used to display the switch state of the heating module (22) corresponding to the control switch (32).

8. The heat load testing system according to claim 1, characterized in that: The thermal load test fixture further comprises a power test interface (6), wherein the power test interface (6) is located on a side wall of the housing (1) and is connected to the main control structure (3), and the power test interface (6) is used to measure the power of the simulated heating structure (2).

9. A heat load testing method, characterized in that: The heat load testing system according to any one of claims 1 to 8 comprises: Installing at least one server and at least one heat load test fixture in the liquid cooling cabinet according to the size of the liquid cooling cabinet in the cooling system; Determine the maximum heat removal capacity of the cooling distribution unit in the cooling system; Adjusting the occupied liquid volume and power of the plurality of thermal load test fixtures according to the maximum heat dissipation capacity in the cooling capacity distribution unit; wherein the occupied liquid volume and power of each thermal load test fixture match the occupied liquid volume and power of the server; A plurality of the servers and a plurality of the heat load test fixtures are turned on to test the cooling system.

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