Pump-driven two-phase liquid cooling system and liquid replenishment control method for pump-driven two-phase liquid cooling system

Abstract

A pump-driven two-phase liquid cooling system and a method for controlling liquid replenishment in a pump-driven two-phase liquid cooling system are provided. The pump-driven two-phase liquid cooling system includes a pump-driven two-phase liquid circulation circuit (100), a first liquid storage tank (200), and a second liquid storage tank (300). The pump-driven two-phase liquid circulation circuit (100) includes a pump (110), an evaporator (120), and a condenser (130) provided in this order. The first liquid storage tank (200) is provided at the front end of the pump (110). The second liquid storage tank (300) is connected to the first liquid storage tank (200) via a first connecting pipe (400). The second liquid storage tank (300) is provided with a first make-up liquid inlet (310). The first connecting pipe (400) is provided with a first valve (410) configured to isolate the second liquid storage tank (300) and the first liquid storage tank (200).

Description

[Technical field]

[0001] This application is filed based on a Chinese patent application bearing application number 202110642644.0 and filing date June 9, 2021, and claims priority to the Chinese patent application, the entire contents of which are hereby incorporated by reference into this application.

[0002] The present application relates to the technical field of thermal control, and in particular to a pump-driven two-phase liquid cooling system and a method for controlling liquid replenishment in a pump-driven two-phase liquid cooling system. [Background technology]

[0003] With the development of communication technology, the power consumption of chips and communication equipment becomes higher and higher, and traditional air cooling and single-phase liquid cooling can gradually not meet the heat dissipation needs, and pump-driven two-phase liquid cooling has great advantages in solving the heat dissipation needs of high power consumption. The working principle of the pump-driven two-phase liquid cooling system is that the liquid working fluid is driven by the pump to enter the evaporator to undergo phase change, absorb the heat of the chip, enter the condenser as gas or liquid for heat exchange, and then enter the pump again in a supercooled state.

[0004] One of the core functions of the pump-driven two-phase liquid cooling system is the evaporation temperature / pressure control of the system, which is performed by the storage tank. Since the storage tank is always in a gas-liquid mixed state, the temperature and pressure correspond one-to-one, and the pressure and evaporation temperature of the entire system can be controlled by controlling the temperature of the storage tank. Another important function of the storage tank is volume absorption. When the power consumption or operating temperature of the system changes, the total volume of the working fluid of the system changes, and the storage tank absorbs this part of the volume change by changing the liquid level to keep the system pressure stable. There must always be liquid working fluid in the storage tank, and the liquid level must not be too low, as this may cause cavitation at the pump inlet and affect the safe operation of the system. If the liquid level is too low due to insufficient system filling, changes in application scenarios, leakage of working fluid, etc., it is necessary to promptly replenish the liquid to ensure the stable and safe operation of the system.

[0005] At present, in a pump-driven two-phase liquid cooling system, when replenishing liquid, the system generally needs to be stopped to cool to room temperature, and the working fluid tank is manually connected to the system to refill liquid, which does not apply to the pump-driven two-phase liquid cooling system of communication equipment. If the system is not stopped, there is a risk that the system operation will be unstable during liquid replenishing, the liquid replenishing process will involve phase change, the liquid replenishing point may be another storage tank, and the temperature and pressure of the storage tank will change, affecting the system pressure, and there is also a risk of liquid backflow. Therefore, the pump-driven two-phase liquid cooling system cannot achieve both online liquid replenishing and stable system operation. Summary of the Invention [Problem to be solved by the invention]

[0006] The embodiments of the present application provide a pump-driven two-phase liquid cooling system and a liquid replenishment control method for the pump-driven two-phase liquid cooling system that can achieve both online liquid replenishment and stable operation of the system. [Means for solving the problem]

[0007] In a first aspect, the present embodiment comprises: a pump-driven two-phase liquid circulation circuit including a pump, an evaporator, and a condenser in this order; A first liquid storage tank provided at a front end of the pump; A second storage tank communicated with the first storage tank via a first connection pipe and provided with a first supply liquid inlet, the first connection pipe being provided with a first valve configured to isolate the second storage tank from the first storage tank. the first liquid storage tank is provided with a maximum mark liquid level, and the lowest position of the second liquid storage tank is higher than the maximum mark liquid level of the first liquid storage tank; A pump-driven two-phase liquid cooling system is provided.

[0008] In a second aspect, the present embodiment comprises: A method for controlling liquid replenishment in a pump-driven two-phase liquid cooling system, comprising: The pump-driven two-phase liquid cooling system includes a pump-driven two-phase liquid circulation circuit, a first liquid storage tank, and a second liquid storage tank, the pump-driven two-phase liquid circulation circuit being provided with a pump, an evaporator, and a condenser in this order, the first liquid storage tank being provided at a front end of the pump, the second liquid storage tank being in communication with the first liquid storage tank via a first connecting pipe, the second liquid storage tank being provided with a first make-up liquid inlet, and the first connecting pipe being provided with a first valve, The liquid replenishment control method includes: closing the first valve to isolate the second storage tank from the first storage tank; Injecting liquid from the first supply liquid inlet into the second storage tank; and if, after completion of liquid injection, a difference between the temperature and / or pressure of the second liquid storage tank and the temperature and / or pressure of the first liquid storage tank falls below a predetermined threshold, opening the first valve to connect the second liquid storage tank and the first liquid storage tank. Effect of the Invention

[0009] The embodiments of the present application include a pump-driven two-phase liquid cooling system and a liquid replenishment control method for a pump-driven two-phase liquid cooling system. According to the embodiments of the present application, a first liquid storage tank and a second liquid storage tank are provided, and the second liquid storage tank is connected to the first liquid storage tank via a first connection pipe, so that when the system is operating normally, the two tanks serve to absorb the volume, and when liquid replenishment is required, the first valve is closed to isolate the second liquid storage tank from the first liquid storage tank, and liquid can be replenished into the second liquid storage tank from the first replenishment liquid inlet, and the second liquid storage tank is isolated from the outside of the system and receives liquid replenishment.

[0010] Other features and advantages of the present application will be set forth in the following specification, and in part will be obvious from this specification, or may be learned by the practice of the present application. The objectives and other advantages of the present application may be attained by the structure particularly pointed out in the description, claims, and drawings. The drawings are used to provide understanding of the technical solution of the present application, constitute a part of the specification, and are used to interpret the technical solution of the present application together with the embodiments of the present application, and are not intended to limit the technical solution of the present application. Hereinafter, embodiments of the present invention will be described with reference to the drawings. [Brief description of the drawings]

[0011] [Figure 1] FIG. 1 is a structural schematic diagram of a pump-driven two-phase liquid cooling system according to a first embodiment of the present application. [Diagram 2] FIG. 11 is a structural schematic diagram of a pump-driven two-phase liquid cooling system according to a second embodiment of the present invention. [Diagram 3] FIG. 11 is a structural schematic diagram of a pump-driven two-phase liquid cooling system according to a third embodiment of the present invention. [Figure 4] FIG. 11 is a structural schematic diagram of a temperature control component of a pump-driven two-phase liquid cooling system according to Example 4 of the present application. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0012] This section describes in detail specific embodiments of the present application, and the embodiments of the present application are illustrated in the drawings. The role of the drawings is to graphically complement the written description in the specification and to enable intuitive and imaginative understanding of each technical feature and the overall technical solution of the present application, but should not be construed as limiting the patent scope of the present application.

[0013] In the description of this application, when "first" or "second" is mentioned, it is merely for the purpose of distinguishing technical features, and should not be understood as indicating or implying the relative importance, or the number of the indicated technical features, or the context of the indicated technical features.

[0014] In the description of this application, unless otherwise expressly limited, the terms "provide", "attach", "connect" and the like should be understood in a broad sense, and a person skilled in the art can reasonably determine the specific meaning of the above terms in this application by referring to the specific content of the technical solutions.

[0015] The embodiments of the present application provide a pump-driven two-phase liquid cooling system and a liquid replenishment control method for the pump-driven two-phase liquid cooling system that can achieve both online liquid replenishment and stable operation of the system.

[0016] The first aspect of the present embodiment is Provided is a pump-driven two-phase liquid cooling system including a pump-driven two-phase liquid circulation circuit, a first storage tank, and a second storage tank, in which the pump-driven two-phase liquid circulation circuit is provided with a pump, an evaporator, and a condenser in this order, the first storage tank is provided at a front end of the pump, the second storage tank is connected to the first storage tank via a first connecting pipe, the second storage tank is provided with a first make-up liquid inlet, and the first connecting pipe is provided with a first valve configured to isolate the second storage tank and the first storage tank.

[0017] A first liquid storage tank and a second liquid storage tank are provided, and the second liquid storage tank is connected to the first liquid storage tank via a first connecting pipe. When the system is operating normally, the two tanks serve to absorb volume. When liquid replenishment is required, the first valve is closed to isolate the second liquid storage tank from the first liquid storage tank, and liquid can be replenished into the second liquid storage tank from the first replenishment liquid inlet. The second liquid storage tank is isolated from the outside of the system and receives liquid replenishment, thereby making it possible to achieve both online liquid replenishment and stable operation of the system.

[0018] Hereinafter, embodiments of the present invention will be described with reference to the drawings.

[0019] As shown in FIG. 1, FIG. 1 is a pump-driven two-phase liquid cooling system according to a first embodiment of the present application. This pump-driven two-phase liquid cooling system includes a pump-driven two-phase liquid circulation circuit 100, a first liquid storage tank 200, and a second liquid storage tank 300. The pump-driven two-phase liquid circulation circuit 100 includes a pump 110, an evaporator 120, and a condenser 130 in this order. The first liquid storage tank 200 is provided at the front end of the pump 110. , a maximum mark liquid level 210 is provided, the second storage tank 300 is in communication with the first storage tank 200 via a first connecting pipe 400, the second storage tank 300 is provided with a first make-up liquid inlet 310, the first connecting pipe 400 is provided with a first valve 410 configured to isolate the second storage tank 300 from the first storage tank 200, and the lowest position of the second storage tank 300 is higher than the maximum mark liquid level 210 of the first storage tank 200. The second storage tank 300 is further provided with a suction port 320.

[0020] When the pump-driven two-phase liquid cooling system is operating normally, both the first liquid storage tank 200 and the second liquid storage tank 300 serve to absorb volume, and the first liquid storage tank 200 contains a mixture of gas and liquid, while the second liquid storage tank 300 contains only gas. During liquid replenishment, the second liquid storage tank 300 is disconnected from the system and receives liquid replenishment, and then its temperature and pressure are adjusted before being reconnected to the system, whereby the liquid working fluid is discharged by gravity into the first liquid storage tank 200 without changing the temperature and pressure of the system, and the first liquid storage tank 200 and the second liquid storage tank 300 continue to operate normally under their original conditions, thereby solving the defect that the pump-driven two-phase liquid cooling system cannot stably replenish liquid online, and greatly improving the maintainability and reliability of the system.

[0021] The first storage tank 200 and the second storage tank 300 are designed to be installed at the top and bottom respectively, and the lowest position of the second storage tank 300 is higher than the highest mark liquid level 210 of the first storage tank 200, thereby ensuring that all the liquid in the second storage tank 300 flows to the first storage tank 200 by gravity when the first valve 410 is open. In normal operation, the first valve 410 is in an open state, there is only gas in the second storage tank 300, and the second storage tank 300 may be treated as a part of the gas volume at the top of the first storage tank 200, and both the second storage tank 300 and the first storage tank 200 play the role of regulating pressure and temperature.

[0022] The first liquid storage tank 200 and the second liquid storage tank 300 are provided with temperature and pressure monitoring sensors.

[0023] 4, the pump-driven two-phase liquid cooling system further includes a temperature control component, which includes a first cooling branch 710 penetrating from the rear end of the pump 110 to the front end of the pump 110, a second cooling branch 720 penetrating from the rear end of the pump 110 to the front end of the pump 110, a first heater 730 provided inside the first liquid storage tank 200, and a second heater 740 provided inside the second liquid storage tank 300, a third valve 711 is provided in the first cooling branch 710, a fourth valve 721 is provided in the second cooling branch 720, a part of the pipe of the first cooling branch 710 penetrates the first liquid storage tank 200 to exchange heat with the working fluid in the first liquid storage tank 200, and a part of the pipe of the second cooling branch 720 penetrates the second liquid storage tank 300 to exchange heat with the working fluid in the second liquid storage tank 300.

[0024] The first cooling branch 710 and the first heater 730 control the temperature of the first liquid storage tank 200, and the second cooling branch 720 and the second heater 740 control the temperature of the second liquid storage tank 300. Here, the first heater 730 and the second heater 740 may be an electric heating rod or an electric heating sheet.

[0025] Generally, the temperature control function of the second liquid storage tank 300 is only used during liquid replenishment and is not used when the pump-driven two-phase liquid cooling system is operating normally. When the pump-driven two-phase liquid cooling system is operating normally, the temperature control of the first liquid storage tank 200 is performed by the first cooling branch 710 and the first heater 730.

[0026] The first supply liquid inlet 310 is designed as an interface, is not limited in shape, and is configured to supply liquid to the second storage tank 300, and may be directly connected to a working fluid tank or other injecting device. The suction port 320 is designed as an interface, is not limited in shape, and is configured to vacuum suction the second storage tank 300 before supplying liquid to the second storage tank 300 in order to improve the efficiency of liquid supply.

[0027] 1, the first liquid storage tank 200 may be provided with a maximum mark liquid level 210, an intermediate mark liquid level 220 and a low mark liquid level 230. When the working condition of the pump-driven two-phase liquid cooling system is the lowest and there is no power consumption, the liquid level is between the intermediate mark liquid level 220 and the low mark liquid level 230, when the working condition of the system is the highest and the power consumption is the highest, the liquid level is between the maximum mark liquid level 210 and the intermediate mark liquid level 220, when the system is operating with the highest power consumption, the liquid level falls below a predetermined value due to single plate maintenance or working fluid leakage, taking the intermediate mark liquid level 220 as an example, and a liquid level alarm is triggered to indicate the need for liquid replenishment.

[0028] When the liquid level in the pump-driven two-phase liquid cooling system is low, indicating the need for liquid replenishment, the first valve 410 is closed to block the first valve 410 from the system, and the second storage tank 300 is vacuum-sucked through the suction port 320 to reduce pressure and speed up liquid replenishment, but this operation is not necessary if the temperature and pressure of the second storage tank 300 are significantly lower than room temperature or the liquid working fluid in the injection device. Liquid is injected into the second storage tank 300 from the first replenishment liquid injection port 310, and as the injection proceeds, the temperature and pressure of the second storage tank 300 gradually increase. When the liquid level in the second storage tank 300 meets the requirements for injection, the injection is stopped and the first replenishment liquid injection port 310 is shut off. When the temperature and pressure of the first storage tank 200 and the second storage tank 300 are the same or close to each other, the first valve 410 is directly opened, and the liquid in the second storage tank 300 flows spontaneously to the first storage tank 200 through the first connecting pipe 400 without changing the pressure and temperature of the system, the liquid level of the first storage tank 200 rises to a normal range, and the liquid supplying process is completed. When the temperature and pressure of the second storage tank 300 become lower than the temperature and pressure of the first storage tank 200, the temperature control function of the second storage tank 300 is turned on to heat or cool the second storage tank 300 to make its temperature close to that of the first storage tank 200, and then the first valve 410 is opened. Without changing the pressure and temperature of the system, the liquid in the second storage tank 300 flows spontaneously to the first storage tank 200 through the first connecting pipe 400, and the liquid level of the first storage tank 200 rises to a normal range, and the liquid supplying process is completed.

[0029] As shown in FIG. 2, FIG. 2 is a pump-driven two-phase liquid cooling system according to Example 2 of the present application, and this pump-driven two-phase liquid cooling system includes a pump-driven two-phase liquid circulation circuit 100, a first liquid storage tank 200, and a second liquid storage tank 300. The pump-driven two-phase liquid circulation circuit 100 is provided with a pump 110, an evaporator 120, and a condenser 130. The first liquid storage tank 200 is provided at the front end of the pump 110. The upper part of the first liquid storage tank 200 is connected to the upper part of the second liquid storage tank 300 via an upper connecting pipe 420, and the lower part of the first liquid storage tank 200 is connected to the lower part of the second liquid storage tank 300 via a lower connecting pipe 430. A first valve 410 is provided on both the upper connecting pipe 420 and the lower connecting pipe 430. The second liquid storage tank 300 is provided with a first supply liquid inlet 310.

[0030] The second embodiment shown in FIG. 2 is the same as the first embodiment shown in FIG. 1 in the following respects.

[0031] In liquid replenishment, the second liquid storage tank 300 to be replenished is isolated from the system, and after liquid replenishment is completed, the temperature of the second liquid storage tank 300 is controlled and then it is reconnected to the system.

[0032] In the second embodiment, the total volume of the first liquid storage tank 200 and the second liquid storage tank 300 is based on the same design principle as the total volume of the first liquid storage tank 200 and the second liquid storage tank 300 in the first embodiment.

[0033] The second embodiment shown in Fig. 2 differs from the first embodiment shown in Fig. 1 in the following respects: There is no limit to the height of the first liquid storage tank 200 and the second liquid storage tank 300, and when operating normally, both of them are in a gaseous state and a liquid state.

[0034] During normal operation, the temperatures of the first liquid storage tank 200 and the second liquid storage tank 300 may be controlled simultaneously in order to improve the efficiency of the temperature control.

[0035] When replenishing the liquid, the second liquid storage tank 300 must not be subjected to vacuum suction.

[0036] In this embodiment, if the temperature and pressure of the second liquid storage tank 300 become higher than room temperature or the working fluid temperature of the injection device, it becomes difficult to replenish the liquid, and power from the injection device is required to replenish the liquid, or the second liquid storage tank 300 needs to be lowered in temperature and pressure in advance, making liquid replenishment more difficult than in the embodiment of Example 1.

[0037] As shown in FIG. 3, FIG. 3 is a pump-driven two-phase liquid cooling system according to a third embodiment of the present application, and this pump-driven two-phase liquid cooling system includes a pump-driven two-phase liquid circulation circuit 100, a first liquid storage tank 200, a second liquid storage tank 300, and a third liquid storage tank 500. The pump-driven two-phase liquid circulation circuit 100 is provided with a pump 110, an evaporator 120, and a condenser 130 in this order. The first liquid storage tank 200 is provided at the front end of the pump 110. The upper part of the first liquid storage tank 200 is connected to the upper part of the second liquid storage tank 300 via an upper connecting pipe 420, and the lower part of the first liquid storage tank 200 is connected to the lower part of the second liquid storage tank 300 via a lower connecting pipe 430. A first valve 410 is provided on both the upper connecting pipe 420 and the lower connecting pipe 430. The second liquid storage tank 300 is provided with a first supply liquid inlet 310. The third storage tank 500 is connected to the second storage tank 300 via a second connecting pipe 600, and a second supply liquid inlet 510 is provided in the third storage tank 500. The second connecting pipe 600 is provided with a second valve 610 configured to isolate the third storage tank 500 from the second storage tank 300. The second storage tank 300 has a maximum mark liquid level, and the lowest position of the third storage tank 500 is higher than the maximum mark liquid level of the second storage tank 300.

[0038] The embodiment shown in FIG. 3 may be regarded as a combination of the embodiment shown in FIG. 1 and the embodiment shown in FIG. 2, and its operation and principle may be referred to in Examples 1 and 2, and will not be described in detail here.

[0039] In a second aspect, an embodiment of the present application provides a liquid replenishment control method for a pump-driven two-phase liquid cooling system, the pump-driven two-phase liquid cooling system includes a pump-driven two-phase liquid circulation circuit 100, a first liquid storage tank 200, and a second liquid storage tank 300, as shown in FIG. 1 , the pump-driven two-phase liquid circulation circuit 100 is provided with a pump 110, an evaporator 120, and a condenser 130 in this order, the first liquid storage tank 200 is provided at a front end of the pump 110, the second liquid storage tank 300 is in communication with the first liquid storage tank 200 via a first connecting pipe 400, the second liquid storage tank 300 is provided with a first replenishment liquid inlet 310, and the first connecting pipe 400 is provided with a first valve 410, and the liquid replenishment control method includes: closing the first valve 410 to isolate the second storage tank 300 from the first storage tank 200; A step of injecting liquid from a first supply liquid inlet 310 into a second liquid storage tank 300; After the injection is completed, if the difference between the temperature of the second liquid storage tank 300 and the temperature of the first liquid storage tank 200 falls below a predetermined threshold value, or the difference between the pressure of the second liquid storage tank 300 and the pressure of the first liquid storage tank 200 falls below a predetermined threshold value, the first valve 410 is opened to connect the second liquid storage tank 300 and the first liquid storage tank 200.

[0040] The operation and principle of this embodiment are the same as those of the pump-driven two-phase liquid cooling system of the embodiment of the first aspect described above, so they will not be described in detail here.

[0041] In the above-mentioned liquid replenishment control method for the pump-driven two-phase liquid cooling system, the first liquid storage tank 200 is set to a maximum mark liquid level 210, the lowest position of the second liquid storage tank 300 is higher than the maximum mark liquid level 210 of the first liquid storage tank 200, the second liquid storage tank 300 is further provided with a suction port 320, and before the step of injecting liquid from the first replenishment liquid inlet 310 into the second liquid storage tank 300, The method further includes a step of vacuum-suctioning the second liquid storage tank 300 through the suction port 320.

[0042] In the above-mentioned liquid replenishment control method for the pump-driven two-phase liquid cooling system, the upper part of the first liquid storage tank 200 is connected to the upper part of the second liquid storage tank 300 via an upper connecting pipe 420, and the lower part of the first liquid storage tank 200 is connected to the lower part of the second liquid storage tank 300 via a lower connecting pipe 430. A first valve 410 is provided on both the upper connecting pipe 420 and the lower connecting pipe 430. After the liquid injection is completed, if the difference between the temperature and / or pressure of the second liquid storage tank 300 and the temperature and / or pressure of the first liquid storage tank 200 exceeds a predetermined threshold value, a temperature and pressure lowering process is performed on the second liquid storage tank 300.

[0043] In the above-mentioned liquid replenishment control method for the pump-driven two-phase liquid cooling system, the pump-driven two-phase liquid cooling system further includes a temperature control component, and the temperature control component includes, as shown in FIG. 3, a first cooling branch 710 penetrating from the rear end of the pump 110 to the front end of the pump 110, a second cooling branch 720 penetrating from the rear end of the pump 110 to the front end of the pump 110, a first heater 730 provided inside the first liquid storage tank 200, and a second heater 740 provided inside the second liquid storage tank 300, and a third valve 711 is provided in the first cooling branch 710, and a fourth valve 721 is provided in the second cooling branch 720, a part of the pipe of the first cooling branch 710 penetrates the first liquid storage tank 200 to exchange heat with the working fluid in the first liquid storage tank 200, and a part of the pipe of the second cooling branch 720 penetrates the second liquid storage tank 300 to exchange heat with the working fluid in the second liquid storage tank 300, and the liquid replenishment control method includes: If the temperature or pressure of the second storage tank 300 exceeds the sum of the temperature or pressure of the first storage tank 200 and a predetermined threshold, opening the fourth valve 721 or activating the first heater 730; The method further includes a step of opening the third valve 711 or activating the second heater 740 when the temperature or pressure of the second storage tank 300 falls below the difference between the temperature or pressure of the first storage tank 200 and a predetermined threshold value.

[0044] Although the embodiments of the present application have been described in detail above with reference to the drawings, the present application is not limited to the above embodiments, and various modifications may be made within the scope of knowledge possessed by a person skilled in the art without departing from the spirit of the present application.

Claims

1. a pump-driven two-phase liquid circulation circuit including a pump, an evaporator, and a condenser in this order; A first liquid storage tank provided at a front end of the pump; a second storage tank communicating with the first storage tank via a first connecting pipe and provided with a first supply liquid inlet, the first connecting pipe being provided with a first valve configured to isolate the second storage tank from the first storage tank; A pump-driven two-phase liquid cooling system, wherein the first liquid storage tank has a maximum mark liquid level set therein, and the lowest position of the second liquid storage tank is higher than the maximum mark liquid level of the first liquid storage tank.

2. 2. The pump-driven two-phase liquid cooling system according to claim 1, wherein the second liquid storage tank is further provided with a suction port.

3. 2. The pump-driven two-phase liquid cooling system of claim 1, wherein an upper portion of the first liquid storage tank is connected to an upper portion of the second liquid storage tank via an upper connecting pipe, and a lower portion of the first liquid storage tank is connected to a lower portion of the second liquid storage tank via a lower connecting pipe, and the first valve is provided on both the upper connecting pipe and the lower connecting pipe.

4. a third storage tank communicating with the second storage tank via a second connecting pipe and provided with a second supply liquid inlet, the second connecting pipe being provided with a second valve configured to isolate the third storage tank from the second storage tank; 4. The pump-driven two-phase liquid cooling system according to claim 3, wherein the second liquid storage tank has a maximum mark liquid level, and the lowest position of the third liquid storage tank is higher than the maximum mark liquid level of the second liquid storage tank.

5. Further comprising a temperature control component; 2. The pump-driven two-phase liquid cooling system of claim 1, wherein the temperature control components include a first cooling branch penetrating from a rear end of the pump to a front end of the pump, a second cooling branch penetrating from the rear end of the pump to the front end of the pump, a first heater provided inside the first storage tank, and a second heater provided inside the second storage tank, a third valve is provided in the first cooling branch, a fourth valve is provided in the second cooling branch, a portion of the pipe of the first cooling branch penetrates the first storage tank to exchange heat with the working fluid in the first storage tank, and a portion of the pipe of the second cooling branch penetrates the second storage tank to exchange heat with the working fluid in the second storage tank.

6. A method for controlling liquid replenishment in a pump-driven two-phase liquid cooling system, comprising: The pump-driven two-phase liquid cooling system includes a pump-driven two-phase liquid circulation circuit, a first liquid storage tank, and a second liquid storage tank, the pump-driven two-phase liquid circulation circuit being provided with a pump, an evaporator, and a condenser in this order, the first liquid storage tank being provided at a front end of the pump, the second liquid storage tank being in communication with the first liquid storage tank via a first connecting pipe, the second liquid storage tank being provided with a first make-up liquid inlet, and the first connecting pipe being provided with a first valve, The liquid replenishment control method includes: closing the first valve to isolate the second reservoir tank from the first reservoir tank; Injecting liquid from the first replenishment liquid inlet into the second storage tank; and after completion of liquid injection, if a difference in temperature between the second storage tank and the first storage tank falls below a predetermined threshold value or a difference in pressure between the second storage tank and the first storage tank falls below a predetermined threshold value, opening the first valve to connect the second storage tank and the first storage tank.

7. The first storage tank is provided with a maximum mark liquid level, and the lowest position of the second storage tank is higher than the maximum mark liquid level of the first storage tank. The second storage tank is further provided with a suction port. Prior to the step of injecting liquid from the first supply liquid inlet into the second storage tank, The liquid replenishment control method according to claim 6 , further comprising the step of: sucking the second liquid storage tank by vacuum through the suction port.

8. The liquid replenishment control method of claim 6, wherein an upper portion of the first liquid storage tank is connected to an upper portion of the second liquid storage tank via an upper connecting pipe, and a lower portion of the first liquid storage tank is connected to a lower portion of the second liquid storage tank via a lower connecting pipe, the first valve is provided on both the upper connecting pipe and the lower connecting pipe, and after liquid injection is completed, if a difference between the temperature and / or pressure of the second liquid storage tank and the temperature and / or pressure of the first liquid storage tank exceeds a predetermined threshold value, a temperature and pressure lowering process is performed on the second liquid storage tank.

9. the pump-driven two-phase liquid cooling system further includes a temperature control component, the temperature control component including a first cooling branch penetrating from a rear end of the pump to a front end of the pump, a second cooling branch penetrating from the rear end of the pump to the front end of the pump, a first heater provided inside the first storage tank, and a second heater provided inside the second storage tank, a third valve is provided in the first cooling branch, a fourth valve is provided in the second cooling branch, a portion of a pipe of the first cooling branch passes through the first storage tank to exchange heat with the working fluid in the first storage tank, and a portion of a pipe of the second cooling branch passes through the second storage tank to exchange heat with the working fluid in the second storage tank, The liquid replenishment control method includes: opening the fourth valve or activating the first heater when the temperature or pressure of the second reservoir exceeds the sum of the temperature or pressure of the first reservoir and the predetermined threshold; 7. The liquid replenishment control method of claim 6, further comprising the step of opening the third valve or activating the second heater when the temperature or pressure of the second liquid storage tank falls below the difference between the temperature or pressure of the first liquid storage tank and the predetermined threshold value.

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