Water chilling unit with natural cooling function and energy storage battery cabin

Abstract

The utility model provides a water chilling unit with a natural cooling function and an energy storage battery cabin, and relates to the technical field of refrigeration technology, the water chilling unit with the natural cooling function comprises a first connecting pipeline, a second connecting pipeline and a third connecting pipeline which are respectively connected with a plate heat exchanger; and a dry cooler is arranged on the third connecting pipeline. According to the water chilling unit with the natural cooling function, the dry cooler is arranged on the third connecting pipeline, and when the temperature of the environment where the dry cooler is located is low, a secondary refrigerant can enter the third connecting pipeline, so that the secondary refrigerant can directly conduct heat exchange with an environment natural cold source at the position of the dry cooler; and the secondary refrigerant after heat exchange can be directly provided for the battery module of the energy storage battery cabin for cooling, so that natural cooling can be fully utilized, the power consumption is reduced, and the annual energy efficiency ratio is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of refrigeration technology, in particular to a chiller unit with natural cooling and an energy storage battery cabin. Background Art

[0002] With the rapid development of the energy storage industry, energy storage battery compartments and other scenarios have increasingly stringent requirements on the size of cooling equipment, temperature control capabilities, and energy saving. Therefore, more adaptable and energy-efficient chillers are receiving more and more attention.

[0003] Most of the chillers currently in use in the market are single mechanical refrigeration, and their energy efficiency is relatively low throughout the year. On this basis, adding a natural cooling method, that is, using the low temperature of the environment to provide cooling when the ambient temperature is low, can greatly improve the annual energy efficiency ratio and achieve the purpose of energy saving.

[0004] When adding natural cooling, the prior art generally adopts a split condensation process, that is, the water cooled by the cooling tower provides coldness for the refrigerant. This method cannot make the refrigerant and the ambient temperature the same low temperature, resulting in a waste of coldness from the natural cooling source. That is, the natural cooling of the prior art cannot make full use of the natural cooling source of the environment. Utility Model Content

[0005] The utility model aims to provide a chiller with natural cooling and an energy storage battery compartment, so as to make full use of the natural cooling source of the environment and improve the energy efficiency ratio of the chiller throughout the year.

[0006] The utility model provides a chiller with natural cooling, comprising a first connecting pipeline, a second connecting pipeline and a third connecting pipeline respectively connected to a plate heat exchanger;

[0007] One end of the third connecting pipeline is connected to the first connecting pipeline, and the other end is connected to the second connecting pipeline, and a dry cooler is arranged on the third connecting pipeline;

[0008] The coolant flows in from the first connecting pipeline, enters the plate heat exchanger and / or the dry cooler on the third connecting pipeline, and then flows out along the second connecting pipeline.

[0009] In an optional embodiment, a three-way valve is further provided, and the three-way valve is respectively connected to the first connecting pipeline, the third connecting pipeline and the plate heat exchanger.

[0010] In an optional implementation, a two-way valve is further provided on the third connecting pipeline, and the two-way valve is provided at a liquid inlet end of the dry cooler.

[0011] In an optional embodiment, a fourth connecting pipeline is further provided, and both ends of the fourth connecting pipeline are connected to the plate heat exchanger;

[0012] The fourth connecting pipe is also provided with a compressor, a condenser and an electronic expansion valve in sequence.

[0013] In an optional embodiment, a drying filter is provided on the fourth connecting pipeline, and the drying filter is provided between the condenser and the electronic expansion valve.

[0014] In an optional embodiment, a fan is further included, and the fan, the condenser and the dry cooler are arranged side by side with each other, and the fan is used to make cold air flow through the dry cooler and the condenser in sequence and then be discharged.

[0015] In an optional embodiment, a filter and a coolant liquid pump are sequentially arranged in the conveying direction of the first connecting pipeline; and the connection between the third connecting pipeline and the first connecting pipeline is located at the liquid outlet end of the coolant liquid pump.

[0016] In an optional embodiment, a pipeline heater is provided on the second connecting pipeline, and a connection point between the third connecting pipeline and the second connecting pipeline is provided at a liquid inlet end of the pipeline heater.

[0017] In an optional embodiment, an ambient temperature sensor is further included, and the ambient temperature sensor is used to detect the temperature of the environment in which the dry cooler is located.

[0018] The utility model provides a dry cooler on the third connecting pipeline of the chiller with natural cooling. When the ambient temperature of the dry cooler is low, the refrigerant can enter the third connecting pipeline, so that the refrigerant can directly exchange heat with the natural cold source of the environment at the dry cooler. The refrigerant after heat exchange can directly cool the battery module of the energy storage battery compartment, thereby making full use of the natural cold source of the environment, reducing power consumption and improving the energy efficiency ratio throughout the year.

[0019] The utility model provides an energy storage battery cabin, comprising a chiller with natural cooling as described in any one of the aforementioned implementations.

[0020] Compared with the prior art, the energy storage battery compartment provided by the utility model has the chiller with natural cooling provided by the utility model, thereby having all the beneficial effects of the chiller with natural cooling provided by the utility model. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the specific implementation methods of the utility model or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0022] Figure 1 A schematic diagram of the structure of a chiller with natural cooling provided in an embodiment of the utility model;

[0023] Figure 2 for Figure 1 Another structural schematic diagram of a chiller with natural cooling is shown.

[0024] Icons: 100-first connecting pipeline; 200-second connecting pipeline; 300-third connecting pipeline; 400-fourth connecting pipeline; 500-two-way valve; 600-plate heat exchanger; 700-pipe heater; 800-fan; 900-condenser; 110-dry cooler; 120-ambient temperature sensor; 130-refrigerant inlet; 140-refrigerant supply port; 150-filter; 160-three-way valve; 170-refrigerant liquid pump; 180-compressor; 190-dry filter; 210-electronic expansion valve. DETAILED DESCRIPTION

[0025] The terms “first”, “second”, “third”, etc. are only used for distinguishing descriptions and do not indicate the order of arrangement, nor can they be understood as indicating or implying relative importance.

[0026] In addition, the terms "horizontal", "vertical", "overhanging" and the like do not mean that the components are required to be absolutely horizontal or overhanging, but can be slightly tilted. For example, "horizontal" only means that its direction is more horizontal than "vertical", and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0027] In the description of the present application, it should be noted that the terms "inside", "outside", "left", "right", "up", "down", etc. indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings, or are directions or positional relationships in which the products of the present application are usually placed when in use. They are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the present application.

[0028] In the description of this application, unless otherwise clearly specified and limited, the terms "set", "installed", "connected" and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, and it can be the internal connection of two elements.

[0029] The technical solution of the present application will be clearly and completely described below in conjunction with the accompanying drawings.

[0030] Reference Figure 1-Figure 2 , the utility model provides a chiller with natural cooling, including a first connecting pipeline 100, a second connecting pipeline 200 and a third connecting pipeline 300 respectively connected to a plate heat exchanger 600;

[0031] One end of the third connecting pipeline 300 is connected to the first connecting pipeline 100, and the other end is connected to the second connecting pipeline 200, and a dry cooler 110 is provided on the third connecting pipeline 300;

[0032] The coolant flows in from the first connecting pipeline 100 , enters the plate heat exchanger 600 and / or the dry cooler 110 on the third connecting pipeline 300 , and then flows out along the second connecting pipeline 200 .

[0033] In some embodiments, the battery module in the energy storage battery compartment continuously emits heat during operation, and a chiller is required to dissipate the heat; one end of the first connecting pipe 100 is connected to the cold plate in the energy storage battery compartment, and the cold plate is attached to the battery module to dissipate the heat of the battery module. The coolant in the cold plate absorbs the heat of the battery and its temperature rises. The coolant with a higher temperature enters the plate heat exchanger 600 through the first connecting pipe 100, and exchanges heat with the refrigerant in the plate heat exchanger 600. The coolant with a lowered temperature enters the second connecting pipe 200, and then enters the cold plate in the energy storage battery compartment, and the cycle continues.

[0034] Both ends of the third connecting pipeline 300 are connected to the first connecting pipeline 100 and the second connecting pipeline 200 respectively. In some other embodiments, the refrigerant on the first connecting pipeline 100 enters the third connecting pipeline 300 and enters the dry cooler 110 of the third connecting pipeline 300; the refrigerant in the dry cooler 110 is cooled by utilizing the natural cold source of the environment, and the cooled refrigerant enters the second connecting pipeline 200, and then enters the cold plate in the energy storage battery compartment, and the cycle continues.

[0035] In some embodiments, the refrigerant on the first connecting pipeline 100 enters the plate heat exchanger 600 and the dry cooler 110 of the third connecting pipeline 300 at the same time, and the refrigerant can exchange heat with the refrigerant in the plate heat exchanger 600, or the refrigerant does not exchange heat in the plate heat exchanger 600, and the refrigerant exchanges heat with the natural cold source of the environment in the dry cooler 110 of the third connecting pipeline 300, and then is mixed in the second connecting pipeline 200, and then enters the cold plate in the energy storage battery compartment, and the cycle is repeated.

[0036] Both the plate heat exchanger 600 and the dry cooler 110 can cool the refrigerant. The plate heat exchanger 600 is a mechanical cooler, while the dry cooler 110 is a natural cooler, which can reduce energy consumption.

[0037] In an optional embodiment, a three-way valve 160 is further provided, and the three-way valve 160 is connected to the first connecting pipeline 100 , the third connecting pipeline 300 and the plate heat exchanger 600 , respectively.

[0038] The three-way valve 160 is connected to the first connecting pipeline 100, the third connecting pipeline 300 and the plate heat exchanger 600 respectively; when the ambient temperature of the dry cooler 110 is high, the refrigerant in the first connecting pipeline 100 will not enter the third connecting pipeline 300, and the plate heat exchanger 600 is used to cool the refrigerant; when the ambient temperature of the dry cooler 110 is low, the three-way valve connects the first connecting pipeline 100 with the third connecting pipeline 300, and the refrigerant in the first connecting pipeline 100 can enter the third connecting pipeline 300, and then enter the dry cooler 110, and the refrigerant in the dry cooler 110 is cooled by the natural cold source of the environment; the refrigerant passing through the dry cooler 110 enters the second connecting pipeline 200, and this heat exchange process uses natural cooling to reduce energy consumption.

[0039] In this way, by using the three-way valve 160, only one way is working in any case, and it is only necessary to ensure that each way meets the refrigeration capacity demand; the mechanical refrigeration and the dry cooler work separately and do not affect each other, and the control logic is simple, which can make full use of the natural cold source of the environment.

[0040] In an optional implementation, a two-way valve 500 is further provided on the third connecting pipeline 300 , and the two-way valve 500 is provided at the liquid inlet end of the dry cooler 110 .

[0041] When a two-way valve 500 is provided on the third connecting pipeline 300, the first connecting pipeline 100 always keeps in communication with the plate heat exchanger 600, that is, the coolant in the first connecting pipeline 100 can always enter the plate heat exchanger 600. At this time, the coolant in the plate heat exchanger 600 can exchange heat with the refrigerant, or the coolant in the plate heat exchanger 600 does not exchange heat. When the ambient temperature is high and the natural cold source cannot meet the cooling demand, the two-way valve 500 can be opened so that part of the coolant exchanges heat with the ambient natural cold source in the dry cooler 110, and part of the coolant exchanges heat with the refrigerant in the plate heat exchanger 600. At this time, the coolant in the plate heat exchanger is adjusted. The heat exchange amount between the heat exchanger 600 and the refrigerant can meet different cooling requirements under the premise of making full use of the natural cold source of the environment; when the ambient temperature is too low, the two-way valve 500 can be opened to allow part of the refrigerant to exchange heat with the environment in the dry cooler 110, and part of the refrigerant directly enters the second connecting pipeline 200 through the plate heat exchanger 600 and mixes with part of the refrigerant that has exchanged heat with the dry cooler 110, thereby preventing the pipeline from freezing due to low temperature; in addition, the two-way valve 500 can be set as a flow-adjustable regulating valve. When the ambient temperature is too low, the opening of the two-way valve 500 can be adjusted to adjust the flow of the refrigerant entering the dry cooler 110, thereby meeting different cooling requirements.

[0042] That is, three working modes are realized by the two-way valve 500. When the ambient temperature is higher than the refrigerant temperature, the two-way valve 500 does not open, and the refrigerant only enters the plate heat exchanger 600. At this time, it is a mechanical refrigeration mode; when the ambient temperature is lower than the refrigerant temperature, the two-way valve 500 opens and natural cooling is turned on. When the ambient temperature cannot meet all refrigeration needs, the compressor 180 starts, and part of the refrigerant entering the plate heat exchanger 600 can be cooled. At this time, it is a mixed refrigeration mode; when the ambient temperature can meet all refrigeration needs, the compressor 180 does not start, and part of the refrigerant entering the plate heat exchanger 600 cannot have a cooling effect. At this time, it is a natural cooling mode.

[0043] In addition, by using the two-way valve 500 , since the brine can enter the dry cooler 110 and the plate heat exchanger 600 at the same time, the total resistance of the first connecting pipeline 100 and the second connecting pipeline 200 is reduced, thereby reducing the power consumption of the brine liquid pump 170 .

[0044] In an optional embodiment, a fourth connecting pipeline 400 is further provided, and both ends of the fourth connecting pipeline 400 are connected to the plate heat exchanger 600;

[0045] The compressor 180 , the condenser 900 , and the electronic expansion valve 210 are sequentially arranged in the conveying direction of the fourth connecting pipe.

[0046] The refrigerant in the fourth connecting pipeline 400 absorbs the heat of the refrigerant at the plate heat exchanger 600, and the refrigerant evaporates into a low-temperature and low-pressure gaseous refrigerant, and then the refrigerant enters the compressor 180 and is compressed into a high-temperature and high-pressure superheated gas; the superheated refrigerant vapor enters the condenser 900 and is condensed into a high-temperature and high-pressure supercooled liquid; then the refrigerant enters the electronic expansion valve 210 for throttling and pressure reduction, and after throttling, the refrigerant is in a low-temperature and low-pressure gas-liquid two-phase state; after absorbing heat in the plate heat exchanger 600, it evaporates again into a low-temperature and low-pressure gas and enters the compressor 180. In this way, the refrigeration cycle is continuously performed.

[0047] In an optional implementation, a drying filter 190 is disposed on the fourth connecting pipeline 400 , and the drying filter 190 is disposed between the condenser 900 and the electronic expansion valve 210 .

[0048] A drying filter 190 is also provided on the fourth connecting pipeline 400. The drying filter 190 is arranged upstream of the electronic expansion valve 210. The high-temperature and high-pressure supercooled liquid passes through the drying filter 190 and then enters the electronic expansion valve 210. The drying filter 190 effectively filters impurities in the high-temperature and high-pressure supercooled liquid, protects the electronic expansion valve 210, and can absorb moisture in the fourth connecting pipeline 400.

[0049] In an optional embodiment, a fan is further included. The fan, the condenser 900 and the dry cooler 110 are arranged side by side with each other. The fan is used to make cold air flow through the dry cooler 110 and the condenser 900 in sequence and then be discharged.

[0050] In order to improve the utilization rate of the fan 800 and reduce the power consumption of the fan, a group of fans 800 are used to cool the dry cooler 110 and the condenser 900 at the same time; when the ambient temperature of the dry cooler 110 is high, the dry cooler 110 does not work, and the fan 800 only dissipates heat for the condenser 900. When the dry cooler 110 and the condenser 900 are working at the same time, since the temperature of the coolant in the dry cooler 110 is much lower than the temperature of the refrigerant in the condenser 900, the cold air first passes through the dry cooler 110 and then passes through the condenser 900 to dissipate heat, so that the fan can dissipate heat for the dry cooler 110 and the condenser 900 at the same time without affecting each other.

[0051] Reference Figure 2 In an optional embodiment, a filter 150 and a coolant liquid pump 170 are sequentially arranged in the conveying direction of the first connecting pipeline 100; and the connection between the third connecting pipeline 300 and the first connecting pipeline 100 is located at the liquid outlet end of the coolant liquid pump 170.

[0052] A filter 150 and a coolant liquid pump 170 are provided on the first connecting pipeline 100. The coolant enters the first connecting pipeline 100, is pressurized by the coolant liquid pump 170, and is sent to the plate heat exchanger 600 or the dry cooler 110 for heat dissipation, and then flows out through the second connecting pipeline 200.

[0053] The filter 150 filters impurities in the brine in the first connecting pipe 100 , and the refrigerant liquid pump is used to pressurize the brine.

[0054] The refrigerant directly exchanges heat with the natural cold source in the environment in the dry cooler 110, ensuring that the temperature of the refrigerant is the same as the ambient temperature and can fully utilize the natural cold source for cooling; the plate heat exchanger 600 is connected to the dry cooler 110 in parallel, reducing the resistance of the refrigerant in the first connecting pipeline 100, reducing the total resistance of the first connecting pipeline 100 and the second connecting pipeline 200, thereby reducing the power consumption of the refrigerant liquid pump 170; the flow direction of the refrigerant is changed by the two-way valve 500, and the refrigerant flow is effectively distributed, further improving energy efficiency.

[0055] In an optional embodiment, a pipeline heater 700 is provided on the second connecting pipeline 200 , and a connection point between the third connecting pipeline 300 and the second connecting pipeline 200 is provided at a liquid inlet end of the pipeline heater 700 .

[0056] When the ambient temperature is too low, the heater can be used to heat the pipeline during startup to prevent the pipeline from freezing and becoming unusable.

[0057] In an optional embodiment, an ambient temperature sensor 120 is further included, and the ambient temperature sensor 120 is used to detect the temperature of the environment in which the dry cooler 110 is located.

[0058] A coolant inlet 130 is provided on the first connecting pipeline 100 , and a coolant supply port 140 is provided on the second connecting pipeline 200 ; the cold plate in the energy storage battery compartment is connected to the coolant inlet 130 and the coolant supply port 140 , respectively.

[0059] Reference Figure 1 and Figure 2 The three-way valve 160 and the two-way valve 500 are both solenoid valves that can be opened and closed automatically. The three-way valve 160 and the two-way valve 500 are connected to the control component. The ambient temperature sensor 120 is used to detect the temperature of the environment in which the dry cooler 110 is located. When the ambient temperature of the dry cooler 110 is low, the dry cooler 110 can be used to meet the cooling capacity demand of the energy storage battery compartment. The three-way valve 160 and the two-way valve 500 are controlled to allow the coolant in the first connecting pipeline 100 to enter the third connecting pipeline 300.

[0060] When the two-way valve 500 is used, the refrigerant can be introduced into the plate heat exchanger 600 and the dry cooler 110 in a certain proportion. That is, when the dry cooler 110 alone cannot meet the cooling demand of the energy storage battery compartment, the dry cooler 110 can also be used for natural cooling, thereby reducing energy consumption.

[0061] The advantage of the above solution is that the cost is relatively low; when the two-way valve 500 is opened, the parallel pipeline reduces the total resistance of the refrigerant and reduces the power consumption of the water pump; the refrigerant is in the plate heat exchanger 600 and the dry cooler 110 at the same time, and a mixed mode can be added to the refrigeration mode. By controlling the opening and closing temperatures of the solenoid valve, the power consumption when the ambient temperature is high can be reduced.

[0062] The three-way valve 160 controls the flow path of the refrigerant. The refrigerant enters from the inlet of the first connecting pipeline 100, and flows to the three-way valve 160 after being pressurized by the refrigerant liquid pump 170. At this time, if the control component determines that the ambient temperature is less than or equal to the opening point of the dry cooler 110, the three-way valve 160 allows the refrigerant to flow only to the dry cooler 110, and flows to the load end after being cooled by air cooling to dissipate heat for the load end. If the control component determines that the ambient temperature is greater than the opening point of the dry cooler 110, the three-way valve 160 allows the refrigerant to enter the plate heat exchanger 600, and all the refrigerant flows only to the plate heat exchanger 600, and flows to the load end after being cooled by mechanical refrigeration to dissipate heat for the load end.

[0063] The advantage of the above scheme is that the flow distribution is reasonable. In any case, only one path is working, and it is only necessary to ensure that the cooling capacity demand is met when each path is working; the mechanical refrigeration and the dry cooler 110 work separately and do not affect each other. The control logic is simple and can make full use of the environmental cold source.

[0064] The coolant may be ethylene glycol solution, and the refrigerant may be Freon or the like; both the coolant and the refrigerant are prior art.

[0065] The third connecting pipeline 300 of the chiller with natural cooling provided by the utility model is provided with a dry cooler 110. When the ambient temperature of the dry cooler 110 is low, the refrigerant can enter the third connecting pipeline 300, and the refrigerant performs heat exchange at the dry cooler 110, so that the refrigerant is at a lower temperature, and then enters the energy storage battery compartment to complete the cooling of the battery module in the energy storage battery compartment; when the ambient temperature of the dry cooler 110 is high, the refrigerant does not enter the dry cooler 110, but only enters the plate heat exchanger 600; in this way, the ambient temperature can be fully utilized to meet the cooling demand of the energy storage battery compartment, reduce power consumption, and improve the energy efficiency ratio throughout the year.

[0066] The utility model provides an energy storage battery cabin, comprising a chiller with natural cooling as described in any one of the aforementioned implementations.

[0067] Compared with the prior art, the energy storage battery compartment provided by the utility model has the chiller with natural cooling provided by the utility model, thereby having all the beneficial effects of the chiller with natural cooling provided by the utility model.

[0068] 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 it. Although the utility model has been described in detail with reference to the aforementioned embodiments, ordinary technicians in this field should understand that they can still modify the technical solutions recorded in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not make the essence of the corresponding technical solution deviate from the scope of the technical solution of the embodiments of the utility model.

Claims

1. A chiller with natural cooling, characterized in that: It comprises a first connecting pipeline (100), a second connecting pipeline (200) and a third connecting pipeline (300) respectively connected to the plate heat exchanger (600); One end of the third connecting pipeline (300) is connected to the first connecting pipeline (100), and the other end is connected to the second connecting pipeline (200), and a dry cooler (110) is provided on the third connecting pipeline (300); The coolant flows in from the first connecting pipeline (100), enters the plate heat exchanger (600) and / or the dry cooler (110) on the third connecting pipeline (300), and then flows out along the second connecting pipeline (200).

2. The chiller with natural cooling according to claim 1, characterized in that: A three-way valve (160) is also provided, and the three-way valve (160) is respectively connected to the first connecting pipeline (100), the third connecting pipeline (300) and the plate heat exchanger (600).

3. The chiller with natural cooling according to claim 1, characterized in that: A two-way valve (500) is also provided on the third connecting pipeline (300), and the two-way valve (500) is provided at the liquid inlet end of the dry cooler (110).

4. The chiller with natural cooling according to claim 2 or 3, characterized in that: A fourth connecting pipeline (400) is also provided, and both ends of the fourth connecting pipeline (400) are connected to the plate heat exchanger (600); The fourth connecting pipe is also provided with a compressor (180), a condenser (900) and an electronic expansion valve (210) in sequence.

5. The chiller with natural cooling according to claim 4, characterized in that: The fourth connecting pipeline (400) is provided with a drying filter (190), and the drying filter (190) is provided between the condenser (900) and the electronic expansion valve (210).

6. The chiller with natural cooling according to claim 4, characterized in that: It also includes a fan (800), wherein the fan (800), the condenser (900) and the dry cooler (110) are arranged side by side with each other, and the fan (800) is used to allow cold air to flow through the dry cooler (110) and the condenser (900) in sequence before being discharged.

7. The chiller with natural cooling according to claim 1, characterized in that: A filter (150) and a coolant liquid pump (170) are sequentially arranged in the conveying direction of the first connecting pipeline (100); and the connection point between the third connecting pipeline (300) and the first connecting pipeline (100) is located at the liquid outlet end of the coolant liquid pump (170).

8. The chiller with natural cooling according to claim 1, characterized in that: The second connecting pipeline (200) is provided with a pipeline heater (700), and the connection point between the third connecting pipeline (300) and the second connecting pipeline (200) is arranged at the liquid inlet end of the pipeline heater (700).

9. The chiller with natural cooling according to claim 1, characterized in that: It also includes an ambient temperature sensor (120), wherein the ambient temperature sensor (120) is used to detect the temperature of the environment in which the dry cooler (110) is located.

10. An energy storage battery compartment, characterized in that: A chiller with natural cooling comprising the method described in any one of claims 1 to 9.

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