A phase-change cold plate temperature control system combining air and liquid

Abstract

The utility model relates to the technical field of refrigeration systems, and specifically to a phase-change cold plate temperature control system with air-liquid fusion, including an indoor heat exchanger, an outdoor heat exchanger, an intermediate heat exchanger, a four-way valve, a compressor, a driving pump, a liquid collecting main pipe, a gas collecting main pipe, and a plurality of cooling branches; the intermediate heat exchanger includes a first channel and a second channel; the first channel is arranged between the other end of the outdoor heat exchanger and one end of the indoor heat exchanger; a first solenoid valve is arranged between the first channel and the other end of the outdoor heat exchanger; the second channel, the driving pump, the liquid collecting main pipe, the cooling branch, and the gas collecting main pipe are connected end to end in sequence. The utility model can make the refrigerant of the cooling plate in the cold plate assembly in the gas-liquid two-phase state as much as possible under the refrigeration state; and it can also heat the indoor air temperature in winter to keep the battery temperature within a reasonable range.

Description

Technical Field

[0001] The utility model relates to the technical field of refrigeration systems, and in particular to an air-liquid fusion cold-warm phase-change cold plate temperature control system. Background Art

[0002] The performance, safety and life of energy storage batteries are affected by temperature. Excessive temperature reduces battery life and may even lead to thermal runaway. The battery box is composed of multiple battery cells. Excessive temperature difference between batteries leads to uneven charging and discharging, which affects battery life. Local high temperature in the battery box may cause internal short circuit of the battery, which will further increase the temperature and increase the risk of thermal runaway. Energy storage batteries are significantly affected by low temperature, and the battery charging and discharging performance is greatly reduced in low temperature environment. When discharging at low temperature, the initial discharge power of the battery is limited, and the performance deteriorates. When charging at low temperature, the activity of the battery electrolyte and the activity of the electrode material are reduced. Unreasonable high current charging will cause the actual available capacity of the battery to permanently decrease.

[0003] The refrigeration forms currently available on the market include:

[0004] 1. Air-cooled direct expansion refrigeration: On the evaporation side of the refrigeration, the fan sends cold air to the battery. In this solution, due to the battery air duct problem, the battery temperature difference is large, which greatly affects the efficiency of the energy storage system.

[0005] 2. Ethylene glycol aqueous solution cold plate liquid cooling, ethylene glycol aqueous solution flows inside the cold plate, which has low efficiency and easily causes inconsistent battery temperature; the life of ethylene glycol aqueous solution is short and generally needs to be replaced every 3 to 5 years; at the same time, once the liquid leaks, there is a risk of short circuit.

[0006] In addition, the current energy storage battery heating methods include PTC and heating film, both of which have low efficiency. Utility Model Content

[0007] The utility model aims to provide a phase-change cold plate temperature control system integrating air and liquid and providing a phase-change cold plate temperature control system.

[0008] The purpose of the utility model is achieved through the following technical solutions: an air-liquid fusion cold-warm phase-change cold plate temperature control system, comprising an indoor heat exchanger, an outdoor heat exchanger, an intermediate heat exchanger, a four-way valve, a compressor, a drive pump and a cooling branch;

[0009] The four-way valve is used to connect one end of the compressor to one end of the outdoor heat exchanger and the other end of the compressor to one end of the indoor heat exchanger, or to connect one end of the compressor to one end of the indoor heat exchanger and the other end of the compressor to one end of the outdoor heat exchanger; the other end of the outdoor heat exchanger is connected to the other end of the indoor heat exchanger;

[0010] The intermediate heat exchanger includes a first channel and a second channel; the first channel is arranged between the other end of the outdoor heat exchanger and one end of the indoor heat exchanger; a first solenoid valve is arranged between the first channel and the other end of the outdoor heat exchanger;

[0011] The second channel, the driving pump and the cooling branch are connected end to end in sequence.

[0012] The utility model is further configured that: the outdoor heat exchanger is provided with an outdoor fan; the indoor heat exchanger is provided with an indoor fan; and the indoor heat exchanger is provided with a PTC electric heater.

[0013] The utility model is further configured such that each cooling branch includes a liquid collecting branch pipe, a gas collecting branch pipe, a flow regulating valve and multiple cold plate assemblies; one end of the liquid collecting branch pipe is connected to the liquid collecting main pipe; the other end of the liquid collecting branch pipe is connected to one end of the gas collecting branch pipe through the cold plate assembly; the other end of the gas collecting branch pipe is connected to the gas collecting main pipe; the flow regulating valve is arranged on the liquid collecting branch pipe.

[0014] The utility model is further configured that the cold plate assembly includes a cooling plate, a throttle valve, a battery box and a first temperature sensor;

[0015] The other end of the liquid collecting branch pipe is connected with one end of the gas collecting branch pipe after passing through a throttle valve and a cooling plate in sequence; the battery box is arranged on the cooling plate; and the first temperature sensor is arranged on the battery box.

[0016] The utility model is further configured that the gas collecting branch pipe is provided with a second temperature sensor and a second pressure sensor.

[0017] The utility model is further configured that the air-liquid fusion cold and warm phase change cold plate temperature control system also includes a liquid collecting main pipe and an air collecting main pipe; the liquid collecting main pipe is arranged between the driving pump and the cooling branch; the air collecting main pipe is arranged between the cooling branch and the second channel.

[0018] The utility model is further configured that a third temperature sensor and a third pressure sensor are provided between the gas collecting main pipe and the second channel.

[0019] The utility model is further configured such that a first drying filter and a first electronic expansion valve are provided between the first channel and the other end of the outdoor heat exchanger; a second drying filter, a second solenoid valve and a second electronic expansion valve are provided between the other end of the outdoor heat exchanger and the other end of the indoor heat exchanger.

[0020] The utility model is further configured such that a third solenoid valve and a first ball valve are provided between the gas collecting main pipe and the second channel; a second ball valve and a liquid storage tank are provided between the driving pump and the second channel; and a fourth solenoid valve and a third ball valve are provided between the driving pump and the liquid collecting main pipe.

[0021] The utility model is further configured that the driving pump includes a first driving pump and a second driving pump;

[0022] The air-liquid fusion cold and warm phase change cold plate temperature control system also includes a first one-way valve and a second one-way valve; the branch connecting the first drive pump and the first one-way valve is connected in parallel with the branch connecting the second drive pump and the second one-way valve.

[0023] The utility model is further configured that the liquid collecting branch pipe is provided with a third drying filter; a third one-way valve is provided between one end of the compressor and the four-way valve; and a gas-liquid separator is provided between the other end of the compressor and the four-way valve.

[0024] Beneficial effects of the utility model: the utility model can make the refrigerant of the cooling plate in the cold plate assembly in the gas-liquid two-phase state as much as possible under the refrigeration state; and in winter, it can also heat the indoor air temperature to keep the battery temperature within a reasonable range. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] The utility model is further described using the accompanying drawings, but the embodiments in the accompanying drawings do not constitute any limitation to the utility model. A person skilled in the art can obtain other drawings based on the following drawings without creative work.

[0026] Figure 1 It is the system principle diagram of the utility model;

[0027] Among them: 1. Indoor heat exchanger; 11. Indoor fan; 12. PTC electric heater; 13. Second drying filter; 14. Second solenoid valve; 15. Second electronic expansion valve; 2. Outdoor heat exchanger; 21. First solenoid valve; 22. First drying filter; 23. First electronic expansion valve; 24. Outdoor fan; 3. Intermediate heat exchanger; 31. First channel; 32. Second channel; 41. Four-way valve; 42. Compressor; 43. Third one-way valve; 44. Gas-liquid separator; 51. First drive pump; 52. Second drive pump; 53. First one-way valve; 54. The second one-way valve; 55, the second ball valve; 56, the liquid storage tank; 57, the fourth solenoid valve; 58, the third ball valve; 6, the liquid collecting main pipe; 7, the gas collecting main pipe; 71, the third temperature sensor; 72, the third pressure sensor; 73, the third solenoid valve; 74, the first ball valve; 8, the cooling branch; 81, the liquid collecting branch pipe; 82, the flow regulating valve; 83, the third drying filter; 84, the gas collecting branch pipe; 85, the second temperature sensor; 86, the second pressure sensor; 9, the cold plate assembly; 91, the cooling plate; 92, the throttle valve; 93, the battery box; 94, the first temperature sensor. DETAILED DESCRIPTION

[0028] The utility model is further described in conjunction with the following embodiments.

[0029] Depend on Figure 1 It can be seen that the air-liquid fusion cold and warm phase change cold plate temperature control system described in this embodiment includes an indoor heat exchanger 1, an outdoor heat exchanger 2, an intermediate heat exchanger 3, a four-way valve 41, a compressor 42, a driving pump, a liquid collecting main pipe 6, a gas collecting main pipe 7 and a plurality of cooling branches 8;

[0030] The four-way valve 41 is used to connect one end of the compressor 42 to one end of the outdoor heat exchanger 2 and the other end of the compressor 42 to one end of the indoor heat exchanger 1, or to connect one end of the compressor 42 to one end of the indoor heat exchanger 1 and the other end of the compressor 42 to one end of the outdoor heat exchanger 2; the other end of the outdoor heat exchanger 2 is connected to the other end of the indoor heat exchanger 1;

[0031] The intermediate heat exchanger 3 includes a first channel 31 and a second channel 32; the first channel 31 is provided between the other end of the outdoor heat exchanger 2 and one end of the indoor heat exchanger 1; a first solenoid valve 21 is provided between the first channel 31 and the other end of the outdoor heat exchanger 2;

[0032] The second channel 32, the driving pump, the liquid collecting main pipe 6, the cooling branch 8 and the gas collecting main pipe 7 are connected end to end in sequence. In the present embodiment, a phase change cold plate temperature control system with air-liquid fusion is described, each cooling branch 8 includes a liquid collecting branch pipe 81, a gas collecting branch pipe 84, a flow regulating valve 82 and a plurality of cold plate components 9; one end of the liquid collecting branch pipe 81 is connected to the liquid collecting main pipe 6; the other end of the liquid collecting branch pipe 81 is connected to one end of the gas collecting branch pipe 84 through the cold plate component 9; the other end of the gas collecting branch pipe 84 is connected to the gas collecting main pipe 7; the flow regulating valve 82 is arranged on the liquid collecting branch pipe 81.

[0033] Specifically, in the air-liquid fusion cold-heat phase-change cold plate temperature control system described in this embodiment, when the system is in cooling mode, the four-way valve 41 connects one end of the compressor 42 with one end of the outdoor heat exchanger 2 and connects the other end of the compressor 42 with one end of the indoor heat exchanger 1, and the first solenoid valve 21 is in a conducting state; at this time, there are two refrigerant flow directions in the compressor 42 circulation path, one is compressor 42-four-way valve 41-outdoor heat exchanger 2-indoor heat exchanger 1-four-way valve 41-compressor 42, and the other is compressor 42-four-way valve 41-outdoor heat exchanger 2-first channel 31-four-way valve 41-compressor 42;

[0034] In addition, the second channel 32, the driving pump, the liquid collecting main pipe 6, the cooling branch 8 and the gas collecting main pipe 7 constitute a cold plate cooling system, and the refrigerant flow direction is the second channel 32-driving pump-liquid collecting main pipe 6-cooling branch 8-gas collecting main pipe 7-second channel 32.

[0035] Through the above-mentioned arrangement, the heat exchange of the intermediate heat exchanger 3 can be changed by controlling the rotational speed of the compressor 42, thereby changing the temperature of the cooling branch 8; in addition, by setting a flow regulating valve 82 in each cooling branch 8, the flow rate of the refrigerant passing through the cold plate assembly 9 can be changed by changing the opening of the flow regulating valve 82, so as to change the superheat of the outlet of the cold plate assembly 9; in addition, by adjusting the rotational speed of the driving pump, the total circulating refrigerant flow rate can be increased, thereby changing the superheat of the outlet of the gas collecting main pipe 7.

[0036] This embodiment adjusts the opening of the flow regulating valve 82 and the rotation speed of the driving pump through the superheat of the outlet of the cold plate assembly 9 and the superheat of the outlet of the gas collecting main pipe 7, so that the refrigerant at the outlet of the cold plate assembly 9 is at a low superheat, and the refrigerant in the cold plate assembly 9 is in the two-phase region as much as possible; when in the two-phase region, the refrigerant boils in the cold plate assembly 9, the heat transfer coefficient is high, and the temperature of the batteries in the battery box 93 is reduced; when in the two-phase region, the surface temperature of the phase change cold plate assembly 9 remains unchanged, thereby improving the consistency of the internal temperature of the energy storage battery box 93.

[0037] When the system is in heating mode, the indoor temperature is low in winter, and the battery temperature is low when it is in a static standby state; if the battery needs to be discharged at this time, the discharge power is limited, so the temperature of the static battery needs to be kept within a reasonable range. First, the four-way valve 41 changes the flow direction of the refrigerant, connects one end of the compressor 42 with one end of the indoor heat exchanger 1 and connects the other end of the compressor 42 with one end of the outdoor heat exchanger 2, and makes the first solenoid valve 21 in a closed state; at this time, the outdoor heat exchanger 2 acts as an evaporator to absorb heat from the outdoor air, and the indoor heat exchanger 1 acts as a condenser to discharge heat, so that the indoor temperature remains constant and the battery temperature also remains within a reasonable range;

[0038] If the battery needs to be charged or discharged with a large current, the refrigerant direction of the four-way valve 41 is changed again, so that the outdoor heat exchanger 2 acts as a condenser, and the first solenoid valve 21 is reopened to keep the battery temperature always within a reasonable range.

[0039] In the embodiment of the present invention, an air-liquid fusion cold-heat phase-change cold plate temperature control system is provided with an outdoor fan 24 at the outdoor heat exchanger 2, an indoor fan 11 at the indoor heat exchanger 1, and a PTC electric heater 12 at the indoor heat exchanger 1. Specifically, the outdoor fan 24 and the indoor fan 11 can speed up the heat exchange of the system; in addition, during the heating process, if the heat generation capacity of the indoor heat exchanger 1 is insufficient, the PTC electric heater 12 is turned on to keep the indoor temperature constant.

[0040] The present embodiment describes a phase-change cold plate temperature control system of air-liquid fusion, wherein the cold plate assembly 9 includes a cooling plate 91, a throttle valve 92, a battery box 93 and a first temperature sensor 94;

[0041] The other end of the liquid collecting branch pipe 81 is connected to one end of the gas collecting branch pipe 84 after passing through the throttle valve 92 and the cooling plate 91 in sequence; the battery box 93 is arranged on the cooling plate 91; and the first temperature sensor 94 is arranged on the battery box 93.

[0042] Specifically, the low-temperature refrigerant in the circulation path of the compressor 42 in the intermediate heat exchanger 3 absorbs the heat of the refrigerant in the cold plate cooling system. The first temperature sensor 94 of the battery box 93 is used to measure the battery temperature inside the battery box 93. When the battery temperature is higher than the battery temperature setting value, the speed of the compressor 42 is increased; when the battery temperature is lower than the battery temperature setting value, the speed of the compressor 42 is reduced, thereby controlling the battery temperature within a reasonable range.

[0043] In the air-liquid fusion cold-heat phase change cold plate temperature control system described in this embodiment, the gas collecting branch pipe 84 is provided with a second temperature sensor 85 and a second pressure sensor 86. Specifically, the above arrangement facilitates the detection of the temperature and pressure of the gas collecting branch pipe 84, thereby detecting the superheat at the outlet of the cold plate assembly 9.

[0044] In the air-liquid fusion cold-heat phase change cold plate temperature control system described in this embodiment, a third temperature sensor 71 and a third pressure sensor 72 are provided between the gas collecting main pipe 7 and the second channel 32. Specifically, the above arrangement facilitates the detection of the temperature and pressure of the gas collecting main pipe 7, thereby detecting the superheat at the outlet of the gas collecting main pipe 7.

[0045] The present embodiment describes a wind-liquid fusion cold and warm phase change cold plate temperature control system, wherein a first drying filter 22 and a first electronic expansion valve 23 are provided between the first channel 31 and the other end of the outdoor heat exchanger 2; a second drying filter 13, a second solenoid valve 14 and a second electronic expansion valve 15 are provided between the other end of the outdoor heat exchanger 2 and the other end of the indoor heat exchanger 1.

[0046] Specifically, this embodiment can filter impurities by setting the first drying filter 22 and the second drying filter 13; by setting the second solenoid valve 14, the on-off of the indoor heat exchanger 1 can be controlled; by setting the first electronic expansion valve 23 and the second electronic expansion valve 15, the flow and pressure of the corresponding circuit can be changed. In addition, by adjusting the opening of the second electronic expansion valve 15, a part of the refrigerant can pass through the indoor heat exchanger 1, and the indoor air can pass through the indoor heat exchanger 1 as an evaporator to reduce the indoor air temperature, and the indoor air temperature can be kept constant, which can absorb part of the heat of the battery, which is beneficial to the uniformity of the battery temperature; when the indoor air humidity is too high, the indoor heat exchanger 1 can also precipitate condensed water of the indoor air as an evaporator, thereby reducing the humidity of the indoor air.

[0047] In the present embodiment, the air-liquid fusion cold-heat phase change cold plate temperature control system is described, wherein the gas collecting main pipe 7 and the liquid collecting main pipe 6 are both manifolds;

[0048] Specifically, the uniformity of the refrigerant flow is related to the resistance of each flow path. The manifold-shaped liquid collecting main pipe 6 and the liquid collecting branch pipe 81 are filled with liquid refrigerant, and the pure liquid refrigerant can better distribute the flow, ensuring the uniformity of the flow distribution; the gas collecting branch pipe 84 is filled with low superheated gas refrigerant, so that the refrigerant pressure of each outlet flow path tends to be consistent; because each flow path is a flow channel of equal length and size, the resistance tends to be consistent; the resistance of the throttle valve 92 is a constant value; because the resistance of the throttle valve 92 and the cooling plate 91 is dominant, the resistance of other parts is relatively small, and the resistance of each path is consistent, so that the flow of each cold plate assembly 9 tends to be consistent.

[0049] In addition, the manifold-shaped gas collecting main pipe 7 ensures that the gas refrigerant between different cold plate assemblies 9 is evenly mixed, so that the refrigerant in the cold plate assembly 9 is in a gas-liquid two-phase state as much as possible.

[0050] A third solenoid valve 73 and a first ball valve 74 are provided between the gas collecting main pipe 7 and the second channel 32; a second ball valve 55 and a liquid storage tank 56 are provided between the driving pump and the second channel 32; a fourth solenoid valve 57 and a third ball valve 58 are provided between the driving pump and the liquid collecting main pipe 6. Specifically, the liquid storage tank 56 can store excess system liquid refrigerant and prevent cavitation inside the driving pump. The liquid level height can be visually observed through the liquid level gauge on the liquid storage tank 56; in addition, by providing the first ball valve 74 and the second ball valve 55, they can be closed when replacing components to prevent the refrigerant from spontaneously migrating due to temperature difference and causing refrigerant accumulation, which is beneficial to system maintenance.

[0051] In this embodiment, a phase-change cold plate temperature control system with air-liquid fusion is described, wherein the driving pump includes a first driving pump 51 and a second driving pump 52;

[0052] The air-liquid fusion cold and warm phase change cold plate temperature control system also includes a first one-way valve 53 and a second one-way valve 54; the branch connecting the first drive pump 51 and the first one-way valve 53 is connected in parallel with the branch connecting the second drive pump 52 and the second one-way valve 54.

[0053] Specifically, this embodiment connects two driving pumps in parallel. When the required refrigerant flow rate is small, only one driving pump is used and the other is kept as a standby. When the required refrigerant flow rate is large, both driving pumps are turned on at the same time, and a small-power pump can be used to achieve a larger adjustment range.

[0054] In the air-liquid fusion cold-heat phase-change cold plate temperature control system described in this embodiment, the liquid collecting branch pipe 81 is provided with a third drying filter 83; the above arrangement can filter impurities; a third one-way valve 43 is provided between one end of the compressor 42 and the four-way valve 41; a gas-liquid separator 44 is provided between the other end of the compressor 42 and the four-way valve 41. The above arrangement can protect the compressor 42.

[0055] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model, rather than to limit the protection scope of the utility model. Although the utility model has been described in detail with reference to the preferred embodiments, ordinary technicians in this field should understand that the technical solution of the utility model can be modified or replaced by equivalents without departing from the essence and scope of the technical solution of the utility model.

Claims

1. A phase-change cold plate temperature control system integrating air and liquid, characterized in that: It comprises an indoor heat exchanger (1), an outdoor heat exchanger (2), an intermediate heat exchanger (3), a four-way valve (41), a compressor (42), a driving pump and a cooling branch (8); The four-way valve (41) is used to connect one end of the compressor (42) to one end of the outdoor heat exchanger (2) and to connect the other end of the compressor (42) to one end of the indoor heat exchanger (1), or to connect one end of the compressor (42) to one end of the indoor heat exchanger (1) and to connect the other end of the compressor (42) to one end of the outdoor heat exchanger (2); the other end of the outdoor heat exchanger (2) is connected to the other end of the indoor heat exchanger (1); The intermediate heat exchanger (3) comprises a first channel (31) and a second channel (32); the first channel (31) is arranged between the other end of the outdoor heat exchanger (2) and one end of the indoor heat exchanger (1); a first solenoid valve (21) is arranged between the first channel (31) and the other end of the outdoor heat exchanger (2); The second channel (32), the driving pump and the cooling branch (8) are connected end to end in sequence.

2. According to claim 1, a phase change cold plate temperature control system combining air and liquid, characterized in that: The outdoor heat exchanger (2) is provided with an outdoor fan (24); the indoor heat exchanger (1) is provided with an indoor fan (11); and the indoor heat exchanger (1) is provided with a PTC electric heater (12).

3. The air-liquid fusion cold-warm phase change cold plate temperature control system according to claim 1, characterized in that: Each cooling branch (8) comprises a liquid collecting branch pipe (81), a gas collecting branch pipe (84), a flow regulating valve (82) and a plurality of cold plate assemblies (9); one end of the liquid collecting branch pipe (81) is connected to the liquid collecting main pipe (6); the other end of the liquid collecting branch pipe (81) is connected to one end of the gas collecting branch pipe (84) through the cold plate assembly (9); the other end of the gas collecting branch pipe (84) is connected to the gas collecting main pipe (7); and the flow regulating valve (82) is arranged on the liquid collecting branch pipe (81).

4. The air-liquid fusion cold-warm phase change cold plate temperature control system according to claim 3, characterized in that: The cold plate assembly (9) comprises a cooling plate (91), a throttle valve (92), a battery box (93) and a first temperature sensor (94); The other end of the liquid collecting branch pipe (81) is connected to one end of the gas collecting branch pipe (84) after passing through the throttle valve (92) and the cooling plate (91) in sequence; the battery box (93) is arranged on the cooling plate (91); the first temperature sensor (94) is arranged on the battery box (93); The gas collecting branch pipe (84) is provided with a second temperature sensor (85) and a second pressure sensor (86).

5. The air-liquid fusion cold-warm phase change cold plate temperature control system according to claim 1, characterized in that: The air-liquid fusion cold-warm phase-change cold plate temperature control system further comprises a liquid collecting main pipe (6) and an air collecting main pipe (7); the liquid collecting main pipe (6) is arranged between the driving pump and the cooling branch (8); the air collecting main pipe (7) is arranged between the cooling branch (8) and the second channel (32).

6. The air-liquid fusion cold-warm phase change cold plate temperature control system according to claim 5, characterized in that: A third temperature sensor (71) and a third pressure sensor (72) are provided between the gas collecting main pipe (7) and the second channel (32).

7. The air-liquid fusion cold-warm phase change cold plate temperature control system according to claim 1, characterized in that: A first drying filter (22) and a first electronic expansion valve (23) are provided between the first channel (31) and the other end of the outdoor heat exchanger (2); a second drying filter (13), a second solenoid valve (14) and a second electronic expansion valve (15) are provided between the other end of the outdoor heat exchanger (2) and the other end of the indoor heat exchanger (1).

8. The air-liquid fusion cold-warm phase change cold plate temperature control system according to claim 5, characterized in that: A third electromagnetic valve (73) and a first ball valve (74) are provided between the gas collecting main pipe (7) and the second channel (32); a second ball valve (55) and a liquid storage tank (56) are provided between the driving pump and the second channel (32); and a fourth electromagnetic valve (57) and a third ball valve (58) are provided between the driving pump and the liquid collecting main pipe (6).

9. The air-liquid fusion cold-warm phase change cold plate temperature control system according to claim 1, characterized in that: The driving pump comprises a first driving pump (51) and a second driving pump (52); The air-liquid fusion cold and warm phase change cold plate temperature control system also includes a first one-way valve (53) and a second one-way valve (54); the branch connecting the first drive pump (51) and the first one-way valve (53) is connected in parallel with the branch connecting the second drive pump (52) and the second one-way valve (54).

10. The air-liquid fusion cold-warm phase change cold plate temperature control system according to claim 3, characterized in that: The liquid collecting branch pipe (81) is provided with a third drying filter (83); a third one-way valve (43) is provided between one end of the compressor (42) and the four-way valve (41); and a gas-liquid separator (44) is provided between the other end of the compressor (42) and the four-way valve (41).

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