Phase change immersion cooling equipment

Abstract

The utility model relates to the technical field of cooling equipment, in particular to phase change immersion cooling equipment. Comprising a liquid cooling heat management unit and a pressure bearing box, the liquid cooling heat management unit is connected with a condensing coil, the condensing coil is located in the pressure bearing box, the top of the pressure bearing box is provided with an automatic pressure release valve and a liquid adding ball valve, the pressure bearing box is provided with a two-side liquid supply path and a two-side air return path, and the two-side liquid supply path is connected with the pressure bearing box and an inlet of a cooling box. The two-side air return path is connected with the outlet of the cooling box and the pressure bearing box; a bypass is further arranged between the pressure bearing box and the inlet of the cooling box, the bypass is connected with the liquid supply paths on the two sides in parallel, and a bypass ball valve is arranged on the bypass. The phase-change immersion cooling equipment disclosed by the utility model is high in heat transfer efficiency, good in energy efficiency and suitable for cooling an energy storage battery cell.

Description

Technical Field

[0001] This utility model relates to the field of cooling equipment technology, specifically a phase change immersion cooling device. Background Technology

[0002] Immersion liquid-cooled electronic fluorinated fluids, with their excellent electrical insulation, thermal conductivity, material compatibility, environmental friendliness, and energy efficiency, have demonstrated enormous application potential in various fields such as data centers, high-power electronic equipment, and aerospace and military electronic equipment. With increasing global emphasis on energy conservation, emission reduction, and sustainable development in data centers, and the advancement of domestic fluorinated fluid production in China, the market prospects for electronic fluorinated fluids will be even broader. Common fluorinated fluid cooling methods include: cold plate type, spray type, and immersion type. Cold plate type involves fixing a liquid cooling plate to the main heat-generating components of the server, relying on the fluorinated fluid flowing through the plate to carry away heat. Spray type involves storing liquid and opening holes at the top of the chassis, allowing the fluorinated fluid to spray onto the heat-generating components according to their location and heat output, achieving equipment cooling. Immersion type involves directly immersing the heat-generating elements in the coolant, relying on the flow and circulation of the fluorinated fluid to remove the heat generated by the heat-generating elements. Immersion liquid cooling is a typical direct-contact type of liquid cooling; because the heat-generating elements are in direct contact with the coolant, the heat dissipation efficiency is higher and the noise is lower. Currently, the main battery thermal management technologies for energy storage systems are air cooling or cold plate cooling. Therefore, there is an urgent need for a liquid-cooled immersion device to be applied in the energy storage field to improve the cooling efficiency of energy storage cells. Utility Model Content

[0003] The problem to be solved is to provide a liquid-cooled immersion device for energy storage systems.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a phase change immersion cooling device, comprising a liquid-cooled thermal management unit and a pressure tank, wherein the liquid-cooled thermal management unit is connected to a condenser coil, the condenser coil is located inside the pressure tank, an automatic pressure relief valve and a liquid filling ball valve are provided on the top of the pressure tank, the pressure tank is provided with two liquid supply lines and two gas return lines, the two liquid supply lines are connected to the pressure tank and the cooling tank inlet, and the two gas return lines are connected to the cooling tank outlet and the pressure tank; a bypass passage is also provided between the pressure tank and the cooling tank inlet, the bypass passage is connected in parallel with the two liquid supply lines, and a bypass ball valve is provided on the bypass passage.

[0005] Preferably, the two liquid supply lines are equipped with a Y-type filter, a ball valve, an internal circulating water pump, a pressure sensor, and a temperature sensor in sequence.

[0006] Preferably, the two return air paths are equipped with a second temperature sensor, a second pressure sensor, and a ball valve in sequence from the outlet of the cooling box.

[0007] Preferably, the liquid-cooled thermal management unit is connected to the condenser coil inlet via a liquid supply line on one side and to the condenser coil outlet via a liquid return line on the other side.

[0008] Preferably, the pressure tank is equipped with a temperature sensor, a pressure sensor, and a liquid level sensor.

[0009] Preferably, the pressure tank is also equipped with a viewing window.

[0010] Compared with the prior art, this utility model provides a phase change immersion cooling device, which has the following features:

[0011] Beneficial effects:

[0012] 1. The phase change immersion cooling device of this utility model has high heat transfer efficiency and good energy efficiency, and is suitable for cooling energy storage cells;

[0013] 2. The pressure tank has a built-in condenser coil, which saves space and requires less fluorinated liquid, thus saving costs;

[0014] 3. The pressure tank is equipped with an observation window, allowing direct observation of the phase change process;

[0015] 4. The main connections of the equipment adopt quick-connect couplings and quick-release chucks, which facilitates connection and prevents leakage; Attached Figure Description

[0016] Figure 1 This is a schematic diagram illustrating the principle of this utility model;

[0017] Explanation of reference numerals in the attached diagram: 1. Liquid-cooled thermal management unit; 2. Float flow meter; 3. Condensate coil; 4. Automatic pressure relief valve; 5. Liquid filling ball valve; 6. Temperature sensor one; 7. Pressure sensor one; 8. Liquid level sensor; 9. Viewing window; 10. Pressure tank; 11. Ball valve one; 12. Pressure sensor two; 13. Temperature sensor two; 14. Bypass ball valve; 15. Y-type filter; 16. Ball valve two; 17. Internal circulating water pump; 18. Pressure sensor three; 19. Temperature sensor three; 20. Cooling tank; 101. One-sided liquid supply line; 102. One-sided liquid return line; 103. Two-sided liquid supply line; 104. Bypass line; 105. Two-sided gas return line. Detailed Implementation

[0018] The technical solutions of the present utility model will now be described with reference to the accompanying drawings in the embodiments of the present utility model:

[0019] As shown in the figure, the phase change immersion cooling device of this utility model includes a liquid-cooled thermal management unit 1 and a pressure tank 10. The liquid-cooled thermal management unit 1 is connected to a condenser coil 3. The liquid-cooled thermal management unit 1 is connected to the inlet of the condenser coil 3 through a liquid supply line 101 on one side and to the outlet of the condenser coil 3 through a liquid return line 102 on one side. The condenser coil 3 is located inside the pressure tank 10, which contains an appropriate amount of fluorinated liquid. The liquid-cooled thermal management unit 1 provides external circulating coolant through the liquid supply line 101. The coolant exchanges heat with the fluorinated liquid in the pressure tank 10 after passing through the condenser coil 3, and then returns to the liquid-cooled thermal management unit 1 through the liquid return line 102 on one side. A float flow meter 2 is provided on the liquid return line 102, which can directly observe the flow rate of the external circulating coolant. The pressure tank 10 is equipped with an automatic pressure relief valve 4 and a liquid filling ball valve 5 at the top. When the pressure inside the pressure tank 10 exceeds a certain range, the automatic pressure relief valve 4 will automatically open to release pressure and ensure safety. When fluorinated liquid needs to be added to the pressure tank 10, the liquid filling ball valve 5 can be opened directly to add liquid. The pressure tank 10 is provided with two liquid supply lines 103 and two gas return lines 105. The two liquid supply lines 103 connect the pressure tank 10 and the inlet of the cooling tank 20, and the two gas return lines 105 connect the outlet of the cooling tank 20 and the pressure tank 10. A bypass passage 104 is also provided between the pressure tank 10 and the inlet of the cooling tank 20. The bypass passage 104 is connected in parallel with the two liquid supply lines 103. A bypass ball valve 14 is provided on the bypass passage 104, which can regulate the liquid flow rate into the cooling tank 20. Y-type filter 15, ball valve 2 16, internal circulating water pump 17, pressure sensor 3 18, and temperature sensor 3 19 are sequentially installed on the two liquid supply lines 103. The liquid fluorinated liquid in the pressure tank 10 is pumped into the cooling tank 20 by the internal circulating water pump 17 through the Y-type filter 15 and ball valve 2 16. Pressure sensor 3 18 and temperature sensor 3 19 detect the pressure and temperature of the liquid entering the cooling tank 20. When it is necessary to reduce the flow rate of the liquid entering the cooling tank 20, the bypass ball valve 14 is opened to allow a portion of the liquid to flow back to the pressure tank 10. The two return gas paths 105, starting from the outlet of the cooling tank 20, are sequentially equipped with a temperature sensor 13, a pressure sensor 12, and a ball valve 11. After passing through the cooling tank 20, the liquid fluorinated liquid absorbs heat and turns into a gaseous state. The temperature sensor 13 and pressure sensor 12 measure the temperature and pressure of the gaseous fluorinated liquid. The gaseous fluorinated liquid on the inner circulation side returns to the pressure tank 10 through the ball valve 11, and then dissipates heat through the condenser coil 3, cooling the gaseous fluorinated liquid back into a liquid fluorinated liquid. The pressure tank 10 is equipped with a temperature sensor 6, a pressure sensor 7, and a liquid level sensor 8. The liquid level sensor 8 alarms when the liquid level in the pressure tank 10 is low, prompting the addition of liquid. The pressure tank 10 also has a viewing window 9, which allows direct observation of the fluorinated liquid phase change process.

[0020] This invention supplies liquid fluorinated liquid to a cooling tank 20, where electronic components requiring cooling are placed. During the cooling process, the fluorinated liquid absorbs heat as it changes from a liquid to a gaseous state, and then returns to the pressure tank 10, releasing heat. The liquid-cooled thermal management unit 1 provides a cold source to the pressure tank 10. The liquid fluorinated liquid in the pressure tank 10 supplies coolant to the cooling tank 20 via two supply lines 103 to cool the electronic components. The heat-absorbing liquid fluorinated liquid changes to a gaseous state and returns to the pressure tank 10 via two return lines 105. The heat carried by the gaseous fluorinated liquid is carried away by the cold source in the condenser coil 3, thus changing the gaseous fluorinated liquid back to a liquid state. The liquid-cooled thermal management unit 1 can be selected and designed to provide different cooling capacities according to actual application scenarios, enabling multi-scenario applications. This invention uses an immersion cooling method to cool electronic components, offering high thermal conductivity and good insulation properties of the fluorinated liquid, thus contributing to the development of the energy storage industry.

[0021] The above embodiments are merely some, not all, of the embodiments of this utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without inventive effort are within the scope of protection of this utility model.

Claims

1. A phase change immersion cooling device, characterized in that: The system includes a liquid-cooled thermal management unit (1) and a pressure tank (10). The liquid-cooled thermal management unit (1) is connected to a condenser coil (3). The condenser coil (3) is located inside the pressure tank (10). The pressure tank (10) is equipped with an automatic pressure relief valve (4) and a liquid filling ball valve (5) on the top. The pressure tank (10) is equipped with two liquid supply lines (103) and two gas return lines (105). The two liquid supply lines (103) are connected to the pressure tank (10) and the inlet of the cooling tank (20). The two gas return lines (105) are connected to the outlet of the cooling tank (20) and the pressure tank (10). A bypass passage (104) is also provided between the pressure tank (10) and the inlet of the cooling tank (20). The bypass passage (104) is connected in parallel with the two liquid supply lines (103). A bypass ball valve (14) is provided on the bypass passage (104).

2. The phase change immersion cooling device as described in claim 1, characterized in that: Y-type filter (15), ball valve II (16), internal circulating water pump (17), pressure sensor III (18) and temperature sensor III (19) are sequentially installed on the two side liquid supply lines (103).

3. The phase change immersion cooling device as described in claim 2, characterized in that: The two return air paths (105) are equipped with a second temperature sensor (13), a second pressure sensor (12) and a first ball valve (11) in sequence from the outlet of the cooling box (20).

4. The phase change immersion cooling device as described in claim 3, characterized in that: The liquid-cooled thermal management unit (1) is connected to the inlet of the condenser coil (3) through a liquid supply line (101) on one side and to the outlet of the condenser coil (3) through a liquid return line (102) on one side.

5. The phase change immersion cooling device as described in claim 4, characterized in that: The pressure tank (10) is equipped with a temperature sensor (6), a pressure sensor (7), and a liquid level sensor (8).

6. The phase change immersion cooling device as described in claim 1, characterized in that: The pressure tank (10) is also equipped with a viewing window (9).

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