A multifunctional direct cooling system

Abstract

The application relates to the technical field of battery thermal management, and discloses a multifunctional direct cooling system. The direct cooling system comprises a compressor, a fan, a condenser, a first control branch, a second control branch, a direct cooling plate, a refrigeration aluminum pipe coil and a dehumidification evaporator; the compressor is connected with the input end of the condenser, the fan is arranged on one side of the condenser, the input ends of the first control branch and the second control branch are connected with the output end of the condenser; the output end of the first control branch is connected with one end of the direct cooling plate, and the output end of the second control branch is connected with the refrigeration aluminum pipe coil and the dehumidification evaporator; the other ends of the direct cooling plate, the refrigeration aluminum pipe coil and the dehumidification evaporator are connected with the compressor through pipelines. The direct cooling system can realize battery separate cooling, refrigeration separate operation, dehumidification separate operation or combined operation of the three according to needs by controlling the opening degree or on-off of the first control branch and the second control branch, the shortcomings of single devices are solved, and the overall performance and service life of the system are improved.

Description

Technical Field

[0001] This application relates to the technical field of battery thermal management, and in particular to a multifunctional direct cooling system. Background Technology

[0002] Currently, most in-vehicle or portable direct cooling systems only have a single function such as battery cooling, food refrigeration, or space dehumidification, and each functional module is arranged independently.

[0003] Taking direct battery cooling as an example, when the evaporator surface temperature is below 0°C, water vapor in the air quickly condenses into liquid water or even frost. If this condensate is not collected and drained in time, it can easily seep into the module through the gaps in the battery pack casing, causing inter-terminal short circuits, thermal runaway, or even vehicle safety accidents. On the other hand, with the rise of activities such as self-driving tours and camping, users also have refrigeration needs for beverages, fresh produce, and medicines. However, installing an additional independent refrigerator not only occupies limited cabin space but also leads to redundant configuration of components such as compressors, fans, and sensors, significantly increasing system weight, energy consumption, and noise.

[0004] Therefore, existing direct cooling systems need to be optimized to integrate functions such as battery charging and discharging cooling, food refrigeration, and dehumidification, so as to solve the shortcomings of single functions, improve the system's service life, and achieve energy saving and emission reduction. Utility Model Content

[0005] The technical problem to be solved by this application is to optimize the existing direct cooling system to integrate functions such as battery charging and discharging cooling, food refrigeration, and dehumidification, thereby overcoming the shortcomings of single-function systems, improving the system's service life, and achieving energy saving and emission reduction.

[0006] To address the aforementioned issues, this application provides a multifunctional direct cooling system, comprising a compressor, a fan, a condenser, a first control branch, a second control branch, a direct cooling plate, a refrigerated aluminum tube coil, and a dehumidifying evaporator. The compressor is connected to the input end of the condenser, the fan is positioned on one side of the condenser, and the input ends of the first and second control branches are respectively connected to the output ends of the condenser. The output end of the first control branch is connected to one end of the direct cooling plate, and the output end of the second control branch is connected to the refrigerated aluminum tube coil and the dehumidifying evaporator, respectively. The other ends of the direct cooling plate, the refrigerated aluminum tube coil, and the dehumidifying evaporator are connected to the compressor via pipes.

[0007] Preferably, the first control branch is provided with a first electronic expansion valve and a first shut-off valve, the first electronic expansion valve being located on the side close to the condenser, and the first shut-off valve being located on the side close to the direct cooling plate.

[0008] Preferably, the second control branch is provided with a second electronic expansion valve and a second shut-off valve. The second electronic expansion valve is located on the side close to the condenser, and the second shut-off valve is located on the side close to the refrigerated aluminum tube coil and / or the dehumidifying evaporator.

[0009] Preferably, the direct cooling system further includes a temperature and humidity sensor, which is located on one side of the refrigerated aluminum tube coil and / or the dehumidifying evaporator.

[0010] Preferably, the second control branch is provided with a first solenoid valve and a second solenoid valve. The first solenoid valve is located in the pipe section at the input end of the refrigerated aluminum tube coil, and the second solenoid valve is located in the pipe section at the input end of the dehumidifying evaporator.

[0011] Preferably, the direct cooling system further includes a third shut-off valve and a first temperature sensor, which are sequentially disposed on the pipe section at the output end of the direct cooling plate.

[0012] Preferably, the direct cooling system further includes a fourth shut-off valve and a second temperature sensor, wherein the fourth shut-off valve and the second temperature sensor are sequentially disposed in the manifold section at the output end of the refrigerated aluminum tube coil and the dehumidifying evaporator.

[0013] Preferably, the direct cooling system further includes a dryer filter, one end of which is connected to the condenser, and the other end of which is connected to the first control branch and the second control branch respectively.

[0014] Preferably, the direct cooling system further includes an ambient temperature sensor, which is located on one side of the compressor and / or condenser.

[0015] Preferably, the direct cooling system further includes a first pressure sensor and a third temperature sensor, which are sequentially disposed on the pipe section between the condenser and the dryer filter.

[0016] Compared with the prior art, this application includes at least one of the following beneficial technical effects:

[0017] After the direct cooling system starts, the refrigerant is compressed into a high-temperature, high-pressure gas by the compressor and then enters the condenser. The fan rotates, increasing airflow and causing the refrigerant to condense into a high-pressure liquid. The liquid refrigerant then enters either the first or second control branch as needed. In the first control branch, the liquid refrigerant evaporates and absorbs heat within the direct cooling plate, directly cooling the battery pack attached to its surface and maintaining it at its optimal operating temperature, thus ensuring operational safety and achieving rapid and precise battery temperature control. In the second control branch, the liquid refrigerant can evaporate in the refrigerated aluminum coil, forming a refrigerated chamber to keep food at a suitable temperature to prevent spoilage and maintain its texture. The liquid refrigerant can also evaporate in the dehumidifying evaporator, cooling the humid air passing through the evaporator and causing water droplets to condense, achieving dehumidification and maintaining the humidity requirements of internal components. The evaporated low-temperature, low-pressure refrigerant gas is then returned to the compressor via the parallel connection of the direct cooling plate, refrigerated aluminum coil, and dehumidifying evaporator, completing a closed-loop cycle.

[0018] To address this, the direct cooling system, by controlling the opening or closing of the first and second control branches, can achieve three operating modes under the same cold source: independent battery cooling, independent refrigeration operation, independent dehumidification operation, or a combination of all three as needed. This overcomes the shortcomings of single components and improves the overall performance and lifespan of the direct cooling system. Furthermore, by using a single compressor and a single condenser to achieve direct battery cooling, food refrigeration, and air dehumidification, it significantly reduces the number and weight of components, achieving energy conservation and emission reduction. Attached Figure Description

[0019] To more clearly illustrate the technical solutions of the embodiments of this application, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 This is a schematic diagram of the overall structure of the direct cooling system in the embodiments of this application.

[0021] Figure 2 This is a control flowchart of the direct cooling system in an embodiment of this application.

[0022] Explanation of reference numerals in the attached diagram: 1. Compressor; 2. Fan; 3. Condenser; 4. Direct cooling plate; 5. Refrigerated aluminum tube coil; 6. Dehumidifying evaporator; 7. First electronic expansion valve; 8. First shut-off valve; 9. Second electronic expansion valve; 10. Second shut-off valve; 11. Temperature and humidity sensor; 12. First solenoid valve; 13. Second solenoid valve; 14. Third shut-off valve; 15. First temperature sensor; 16. Fourth shut-off valve; 17. Second temperature sensor; 18. Dryer filter; 19. First pressure sensor; 20. Third temperature sensor; 21. First needle valve; 22. Ambient temperature sensor; 23. Fourth temperature sensor; 24. Pressure switch; 25. Second pressure sensor; 26. Second needle valve. Detailed Implementation

[0023] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0024] It should be understood that, when used in this specification and the appended claims, the terms "comprising" and "including" indicate the presence of the described features, integrals, steps, operations, elements and / or components, but do not exclude the presence or addition of one or more other features, integrals, steps, operations, elements, components and / or collections thereof.

[0025] It should also be understood that the terminology used in this application specification is for the purpose of describing particular embodiments only and is not intended to limit the application. As used in this application specification and the appended claims, the singular forms “a,” “an,” and “the” are intended to include the plural forms unless the context clearly indicates otherwise.

[0026] It should also be further understood that the term “and / or” as used in this application specification and the appended claims means any combination of one or more of the associated listed items and all possible combinations, and includes such combinations.

[0027] Please refer to Figure 1 This application provides a multifunctional direct cooling system, which includes a compressor 1, a fan 2, a condenser 3, a first control branch, a second control branch, a direct cooling plate 4, a refrigerated aluminum tube coil 5, and a dehumidifying evaporator 6.

[0028] Specifically, the fan 2 is located on one side of the condenser 3, and the input ends of the first control branch and the second control branch are respectively connected to the output end of the condenser 3; the output end of the first control branch is connected to one end of the direct cooling plate 4, and the output end of the second control branch is respectively connected to the refrigerated aluminum tube coil 5 and the dehumidifying evaporator 6; the other ends of the direct cooling plate 4, the refrigerated aluminum tube coil 5 and the dehumidifying evaporator 6 are connected to the compressor 1 through pipes.

[0029] After the direct cooling system starts, the refrigerant is compressed into a high-temperature, high-pressure gas by the compressor 1 and then enters the condenser 3. The fan 2 rotates to increase airflow, causing the refrigerant to condense into a high-pressure liquid. Subsequently, the liquid refrigerant enters either the first control branch or the second control branch as needed. In the first control branch, the liquid refrigerant evaporates and absorbs heat within the direct cooling plate 4, directly cooling the battery in close contact with its surface, keeping the battery at its optimal operating temperature, thus ensuring operational safety and achieving rapid and precise battery temperature control. In the second control branch, the liquid refrigerant can evaporate in the refrigerated aluminum tube coil 5, forming a refrigerated cavity to keep food at a suitable temperature to prevent spoilage and maintain its texture. The liquid refrigerant can also evaporate in the dehumidifying evaporator 6, causing the humid air passing through the dehumidifying evaporator 6 to cool and precipitate water droplets, achieving dehumidification and maintaining the humidity requirements of the internal components. The evaporated low-temperature, low-pressure refrigerant gas is then combined in parallel by the direct cooling plate 4, the refrigerated aluminum tube coil 5, and the dehumidifying evaporator 6, and returned to the compressor 1 to complete a closed-loop cycle.

[0030] To address this, the direct cooling system, by controlling the opening or closing of the first and second control branches, can achieve three operating modes under the same cold source: independent battery cooling, independent refrigeration operation, independent dehumidification operation, or a combination of all three as needed. This overcomes the shortcomings of single components and improves the overall performance and lifespan of the direct cooling system. Furthermore, by using a single compressor 1 and a single condenser 3 to achieve direct battery cooling, food refrigeration, and air dehumidification, the number and weight of components are significantly reduced, achieving energy saving and emission reduction.

[0031] In one specific embodiment, the first control branch is provided with a first electronic expansion valve 7 and a first shut-off valve 8. The first electronic expansion valve 7 is located on the side closer to the condenser 3, and the first shut-off valve 8 is located on the side closer to the direct cooling plate 4.

[0032] In the first control branch, high-pressure liquid refrigerant flows out of the condenser 3 and enters the first electronic expansion valve 7. Based on real-time commands from the main control unit, the first electronic expansion valve 7 throttles and depressurizes the refrigerant to a low-pressure, low-temperature two-phase state that matches the evaporation temperature of the direct-cooling plate 4. The depressurized refrigerant then passes through the first shut-off valve 8, which can be an electromagnetic or electric shut-off valve. The first shut-off valve 8 only opens when there is a battery cooling requirement and the system self-test is fault-free. When the battery temperature has reached the target or the first electronic expansion valve 7 malfunctions, the first shut-off valve 8 immediately closes, thereby preventing liquid slugging, overcooling, or refrigerant reverse migration. After entering the direct-cooling plate 4, the refrigerant absorbs heat from the battery and evaporates into a low-temperature, low-pressure gas. It then merges with the return gas from the second control branch and returns to the compressor 1, completing the battery direct-cooling cycle.

[0033] In one specific embodiment, the second control branch is provided with a second electronic expansion valve 9 and a second shut-off valve 10. The second electronic expansion valve 9 is located on the side closer to the condenser 3, and the second shut-off valve 10 is located on the side closer to the refrigerated aluminum tube coil 5 and / or the dehumidifying evaporator 6.

[0034] In the second control branch, the high-pressure liquid refrigerant from the condenser 3 enters the second electronic expansion valve 9, where it is throttled and depressurized to a medium-low temperature evaporation pressure matching that of the refrigerated aluminum tube coil 5 and the dehumidifying evaporator 6. After throttling, the low-temperature two-phase refrigerant is divided into two parallel paths by the second shut-off valve 10: one path enters the refrigerated aluminum tube coil 5 to absorb heat from the refrigeration chamber and maintain the food preservation temperature; the other path enters the dehumidifying evaporator 6, cooling the humid air flowing over its surface to below the dew point, causing water to separate and be discharged, thus achieving dehumidification of the chamber. The evaporated low-temperature, low-pressure gaseous refrigerant merges from the two paths and then merges with the return gas from the first control branch back to the compressor 1, completing the closed-loop cycle of the second control branch. When the refrigerated aluminum tube coil 5 or the dehumidifying evaporator 6 experiences frost, overcooling, or other abnormalities, the second shut-off valve 10 can instantly cut off this branch to prevent liquid slugging and wet compression by the compressor 1, improving the overall reliability and lifespan of the unit.

[0035] Furthermore, the direct cooling system also includes a temperature and humidity sensor 11, which is disposed on one side of the refrigerated aluminum tube coil 5 and / or the dehumidifying evaporator 6. In this embodiment, the temperature and humidity sensor 11 can be arranged close to the return air inlet side of the refrigerated aluminum tube coil 5 and / or the air outlet side of the dehumidifying evaporator 6 to collect the air temperature and relative humidity in the refrigeration chamber in real time, as well as the outlet air temperature and relative humidity after flowing through the dehumidifying evaporator 6.

[0036] Temperature and humidity sensor 11 uploads data to the main control unit, which calculates the real-time dew point temperature, frost risk value, and food preservation index based on this data. If the air temperature or relative humidity in the refrigeration chamber exceeds the set upper limit, the main control unit increases the opening of the second electronic expansion valve 9 to increase the refrigeration capacity. If the outlet air temperature after flowing through the dehumidifying evaporator 6 is close to the freezing point and the relative humidity drops rapidly, indicating that frost has begun to form on the surface of the dehumidifying evaporator 6, the main control unit decreases the opening of the second electronic expansion valve 9 and intermittently starts and stops the fan 2 to execute the defrosting logic. When battery cooling demand is the first priority and the refrigeration chamber has met the requirements, the main control unit prioritizes shutting off the second shut-off valve 10 to achieve reasonable energy distribution.

[0037] In one specific embodiment, the second control branch is further provided with a first solenoid valve 12 and a second solenoid valve 13. The first solenoid valve 12 is located in the pipe section at the input end of the refrigerated aluminum tube coil 5, and the second solenoid valve 13 is located in the pipe section at the input end of the dehumidifier evaporator 6.

[0038] The second control branch shares a common throttling-shutdown mechanism (i.e., the second electronic expansion valve 9 + the second shut-off valve 10). After the refrigerant is depressurized by the second electronic expansion valve 9, it first reaches the second shut-off valve 10, where it splits into two paths: the first solenoid valve 12—refrigeration aluminum coil 5; and the second solenoid valve 13—dehumidification evaporator 6. The main control unit independently drives the opening and closing of the first solenoid valve 12 and the second solenoid valve 13 according to the temperature and humidity sensor 11 and user requirements: when the first solenoid valve 12 is turned on alone, only the refrigeration function is available; when the second solenoid valve 13 is turned on alone, only the dehumidification function is available; when the first solenoid valve 12 and the second solenoid valve 13 are turned on simultaneously, the refrigeration and dehumidification functions are performed in parallel; when both the first solenoid valve 12 and the second solenoid valve 13 are closed, the second control branch is completely isolated.

[0039] In response, the second electronic expansion valve 9 is responsible for fine-tuning the overall flow rate, while the first solenoid valve 12 and the second solenoid valve 13 are responsible for function start / stop and fault isolation. By controlling the on / off state of the first solenoid valve 12 and the second solenoid valve 13, refrigeration and dehumidification can operate completely in a time-sharing manner, avoiding mutual competition for cooling capacity. When abnormalities such as frost formation or overheating occur in the refrigeration aluminum tube coil 5 or the dehumidification evaporator 6, the main control unit immediately shuts off the corresponding solenoid valve, while the second shut-off valve 10 acts as a secondary shut-off, ensuring double sealing, preventing liquid slugging, refrigerant migration, and battery moisture, thus improving the reliability of the direct cooling system.

[0040] In one specific embodiment, the direct cooling system further includes a third shut-off valve 14 and a first temperature sensor 15. The third shut-off valve 14 and the first temperature sensor 15 are sequentially disposed on the pipe section at the output end of the direct cooling plate 4.

[0041] The low-temperature, low-pressure gaseous refrigerant evaporated from the direct-cooling plate 4 first passes through the third shut-off valve 14, then flows through the first temperature sensor 15, and finally merges into the main return gas pipeline to return to the compressor 1. The first temperature sensor 15 detects the return gas temperature / superheat in real time and feeds the signal back to the main control unit. The main control unit then precisely adjusts the opening of the first electronic expansion valve 7 to ensure that the superheat at the outlet of the direct-cooling plate 4 is stable within the set range. In this embodiment, the third shut-off valve 14 is a normally open solenoid valve that can operate in the following two states: it remains fully open during normal operation to ensure smooth refrigerant return; when the system detects an abnormality in the direct-cooling plate 4 or the battery (such as localized overcooling, frosting, or leakage), the main control unit immediately closes the third shut-off valve 14, completely isolating the first control branch from the return gas port of the compressor 1, preventing liquid refrigerant or condensate from entering the compressor 1, and achieving fault self-protection.

[0042] In one specific embodiment, the direct cooling system further includes a fourth shut-off valve 16 and a second temperature sensor 17. The fourth shut-off valve 16 and the second temperature sensor 17 are sequentially disposed in the manifold section at the output ends of the refrigerated aluminum tube coil 5 and the dehumidifying evaporator 6.

[0043] The low-temperature, low-pressure gaseous refrigerant evaporated from the refrigerated aluminum coil 5 and the dehumidifying evaporator 6 first converges at their respective outlets, then enters the second temperature sensor 17 via the fourth shut-off valve 16, and subsequently merges with the return gas from the direct cooling plate 4 before returning to the compressor 1. The second temperature sensor 17 monitors the return gas temperature / superheat of the second branch in real time and feeds the signal back to the main control unit. Based on this, the main control unit precisely adjusts the opening of the second electronic expansion valve 9 to maintain optimal evaporation conditions for both the refrigeration chamber and the dehumidifying evaporator 6. In this embodiment, the fourth shut-off valve 16 is a normally open solenoid valve with independent shut-off capability: it remains fully open during normal operation to ensure smooth refrigerant return; when the refrigeration chamber is detected to be too cold, the evaporator is frosted, or a system malfunction is detected, the main control unit immediately closes the fourth shut-off valve 16, achieving complete isolation between the second control branch and the compressor 1 return gas port.

[0044] In one specific embodiment, the direct cooling system further includes a dryer filter 18. One end of the dryer filter 18 is connected to the condenser 3, and the other end of the dryer filter 18 is connected to the first control branch and the second control branch, respectively.

[0045] After the high-pressure liquid refrigerant flows out of the condenser 3, it first enters the dryer filter 18. The dryer filter 18 is filled with molecular sieves and filter screens, which simultaneously adsorb and intercept moisture, acidic substances, and solid impurities. The dried and purified refrigerant is then divided into two paths: one flows to the first control branch, and the other flows to the second control branch.

[0046] Furthermore, the direct cooling system also includes a first pressure sensor 19, a third temperature sensor 20, and a first needle valve 21. The two ends of the first pressure sensor 19 are respectively connected to the condenser 3 and one end of the third temperature sensor 20, and the two ends of the first needle valve 21 are respectively connected to the other end of the third temperature sensor 20 and the dryer filter 18.

[0047] The high-pressure liquid refrigerant at the outlet of condenser 3 first flows through the first pressure sensor 19 to measure the high-pressure side pressure in real time. Then, the refrigerant enters the third temperature sensor 20 to measure the subcooled liquid temperature. The pressure-temperature data measured by the first pressure sensor 19 and the third temperature sensor 20 are synchronously uploaded to the main control unit for accurate calculation of the current subcooling degree, and based on this, the opening of the first electronic expansion valve 7 and the second electronic expansion valve 9 is adjusted in a closed loop. The refrigerant continues to flow through the first needle valve 21 and then into the dryer filter 18. The first needle valve 21 can precisely control the refrigerant flow into the dryer filter 18 and downstream branches during system debugging or maintenance, and can also be completely closed to isolate the dryer filter 18 for replacement or repair without having to recover all the refrigerant.

[0048] In one specific embodiment, the direct cooling system further includes an ambient temperature sensor 22, which is located on one side of the compressor 1 and / or the condenser 3.

[0049] An ambient temperature sensor 22 is used to detect the internal ambient temperature of the direct cooling system and upload the data to the main control unit, which then makes dynamic adjustments accordingly. When the internal ambient temperature is high, the compressor 1 speeds up to prevent high pressure; when the internal ambient temperature is low, the compressor 1 speeds down to prevent low pressure. Closed-loop speed regulation is performed based on the difference between the ambient temperature sensor 22 and the high pressure to maintain a constant subcooling. Additionally, this also prevents over-condensation of the direct cooling plate 4 in low-temperature environments or battery overheating in high-temperature environments.

[0050] In one specific embodiment, the direct cooling system further includes a fourth temperature sensor 23 and a pressure switch 24. The two ends of the fourth temperature sensor 23 are connected to the compressor 1 and the pressure switch 24, respectively, and the other end of the pressure switch 24 is connected to the condenser 3.

[0051] The high-temperature, high-pressure refrigerant, after being compressed by compressor 1, first flows through the fourth temperature sensor 23 to monitor the exhaust temperature in real time. It then enters pressure switch 24, which detects the upper / lower limit thresholds of the exhaust pressure. When the exhaust temperature exceeds the set upper limit or the exhaust pressure exceeds the safety upper limit, the main control unit immediately reduces the load on compressor 1 or shuts it down to prevent overheating or overpressure. When the exhaust pressure is below the lower limit (leakage or low-pressure fault), pressure switch 24 directly disconnects the compressor 1 circuit, achieving hard-wired protection.

[0052] In one specific embodiment, the direct cooling system further includes a second pressure sensor 25 and a second needle valve 26. One end of the second needle valve 26 is connected to the output terminals of the first control branch and the second control branch, and both ends of the second pressure sensor 25 are respectively connected to the other end of the second needle valve 26 and the compressor 1.

[0053] In response, the three low-temperature, low-pressure gaseous refrigerants flowing through the direct cooling plate 4, the refrigerated aluminum tube coil 5, and the dehumidifying evaporator 6 first merge at the junction point, and then enter the second pressure sensor 25 through the second needle valve 26. The second needle valve 26 can adjust the return gas resistance after merging during system debugging or maintenance to ensure uniform back pressure in each branch; if necessary, it can be completely closed to isolate downstream components, facilitating inspection or vacuuming of the second pressure sensor 25 and compressor 1. The second pressure sensor 25 detects the low pressure (return gas pressure) after merging in real time and uploads the data to the main control unit. When the second pressure sensor 25 detects abnormal low pressure (leakage, blockage, or insufficient evaporation), it immediately triggers load reduction or shutdown protection.

[0054] Please refer to Figure 2 After the direct cooling system is started, it collects data on temperature, pressure, and humidity, and determines whether the battery temperature, refrigerator temperature, and humidity have reached the set values. If the set values ​​have not been reached, compressor 1 is turned on; if the set values ​​have been reached, the corresponding program is terminated.

[0055] When the first control branch has a cooling demand, the first electronic expansion valve 7 opens. The opening size is controlled according to the superheat collected by the first temperature sensor 15. If the superheat is high, the opening of the first electronic expansion valve 7 widens; if the superheat is low, the opening of the first electronic expansion valve 7 closes. If the superheat meets the standard, the opening remains unchanged. Then, it is determined whether the battery temperature has reached the set value. If it has not reached the set value, the corresponding program ends. If it has reached the set value, the opening of the first electronic expansion valve 7 gradually decreases. It is also determined whether the first electronic expansion valve 7 is completely closed. If it is not completely closed, the corresponding program ends. If it is completely closed, a program is performed to determine whether both the first electronic expansion valve 7 and the second electronic expansion valve 9 are completely closed. If both are completely closed, the compressor 1 is turned off; otherwise, the corresponding process ends.

[0056] When the second control branch has a cooling demand, if the refrigerator compartment temperature does not meet the set value, the first solenoid valve 12 opens; otherwise, the corresponding program ends. If the humidity does not reach the set humidity, the second solenoid valve 13 opens; otherwise, the corresponding program ends. Then, the second electronic expansion valve 9 opens. The opening size of the second electronic expansion valve 9 is controlled according to the superheat detected by the second temperature sensor 17. If the superheat is high, the opening of the second electronic expansion valve 9 widens; if the superheat is low, the opening of the second electronic expansion valve 9 closes; if the superheat meets the standard, the opening size remains unchanged. Next, it is determined whether the refrigerator compartment temperature and humidity have reached the set values. If they have not reached the set values, the relevant process ends; if they have reached the set values, either the first solenoid valve 12 or the second solenoid valve 13 closes, or both the first solenoid valve 12 and the second solenoid valve 13 close. It then continues to determine whether both the first solenoid valve 12 and the second solenoid valve 13 are closed. If not, the corresponding program ends; if they are, the second electronic expansion valve 9 closes. Finally, it checks whether both the first electronic expansion valve 7 and the second electronic expansion valve 9 are closed. If they are, the compressor 1 is shut down; otherwise, the corresponding process ends.

[0057] Here, the direct cooling system achieves different functions by connecting components such as the direct cooling plate 4, the dehumidifying evaporator 6, and the refrigerated aluminum tubing coil 5. Simultaneously, the flow rate and pressure are regulated by the first electronic expansion valve 7 and the second electronic expansion valve 9, thereby adjusting the cooling capacity and controlling temperature and humidity to adapt to different operating conditions, reduce unnecessary cooling loss, and maximize the safety of the direct cooling system. When connected to the direct cooling plate 4, the system can be used to cool batteries, ensuring they operate at optimal temperatures and extending their lifespan and performance. When connected to the dehumidifying evaporator 6, the system dehumidifies the inside of batteries or other areas, maintaining components in an optimal working environment and ensuring equipment safety. When connected to the refrigerated aluminum tubing coil 5, the system provides a suitable temperature environment for food and beverages, preventing spoilage.

[0058] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any person skilled in the art can easily conceive of various equivalent modifications or substitutions within the technical scope disclosed in this application, and these modifications or substitutions should all be covered within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A multifunctional direct cooling system, characterized in that: Includes compressor, fan, condenser, first control branch, second control branch, direct cooling plate, refrigerated aluminum tubing coil and dehumidifying evaporator; The compressor is connected to the input end of the condenser, the fan is located on one side of the condenser, the input ends of the first control branch and the second control branch are respectively connected to the output end of the condenser; the output end of the first control branch is connected to one end of the direct cooling plate, and the output end of the second control branch is respectively connected to the refrigerated aluminum tube coil and the dehumidifying evaporator; the other ends of the direct cooling plate, the refrigerated aluminum tube coil and the dehumidifying evaporator are connected to the compressor through pipes.

2. The multifunctional direct cooling system according to claim 1, characterized in that, The first control branch is provided with a first electronic expansion valve and a first shut-off valve. The first electronic expansion valve is located on the side close to the condenser, and the first shut-off valve is located on the side close to the direct cooling plate.

3. The multifunctional direct cooling system according to claim 1, characterized in that, The second control branch is provided with a second electronic expansion valve and a second shut-off valve. The second electronic expansion valve is located on the side close to the condenser, and the second shut-off valve is located on the side close to the refrigerated aluminum tube coil and / or the dehumidifying evaporator.

4. The multifunctional direct cooling system according to claim 3, characterized in that, The direct cooling system also includes a temperature and humidity sensor, which is located on one side of the refrigerated aluminum tube coil and / or the dehumidifying evaporator.

5. A multifunctional direct cooling system according to claim 4, characterized in that, The second control branch is equipped with a first solenoid valve and a second solenoid valve. The first solenoid valve is located in the pipe section at the input end of the refrigerated aluminum tube coil, and the second solenoid valve is located in the pipe section at the input end of the dehumidifying evaporator.

6. A multifunctional direct cooling system according to claim 1, characterized in that, The direct cooling system also includes a third shut-off valve and a first temperature sensor, which are sequentially installed on the pipe section at the output end of the direct cooling plate.

7. A multifunctional direct cooling system according to claim 1, characterized in that, The direct cooling system also includes a fourth shut-off valve and a second temperature sensor, which are sequentially installed in the manifold section at the output end of the refrigerated aluminum tube coil and the dehumidifying evaporator.

8. A multifunctional direct cooling system according to claim 1, characterized in that, The direct cooling system also includes a dryer filter, one end of which is connected to the condenser, and the other end of which is connected to the first control branch and the second control branch respectively.

9. A multifunctional direct cooling system according to claim 1, characterized in that, The direct cooling system also includes an ambient temperature sensor, which is located on one side of the compressor and / or condenser.

10. A multifunctional direct cooling system according to claim 8, characterized in that, The direct cooling system also includes a first pressure sensor and a third temperature sensor, which are sequentially installed on the pipe section between the condenser and the dryer filter.

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