Dehumidification system

Abstract

The application discloses a dehumidification system, and belongs to the technical field of dehumidification. The dehumidification system comprises an air inlet pipeline, a drying pipeline, an air mixing pipeline, a cooling and drying pipeline and a heating pipeline; the air inlet pipeline, the drying pipeline, the air mixing pipeline, the cooling and drying pipeline and the heating pipeline are sequentially connected and sequentially communicated; the air inlet pipeline is provided with an air inlet; the air mixing pipeline is provided with an air mixing opening; the heating pipeline is provided with an air outlet; the heating pipeline is used for heating fluid flowing into the heating pipeline and discharging the fluid through the air outlet; the cooling and drying pipeline comprises a cooling and drying pipeline section, a first cooling member and a first heating member; the first cooling member and the first heating member are located in the cooling and drying pipeline section; an inlet end of the cooling and drying pipeline section is communicated with the air mixing pipeline; an outlet end of the cooling and drying pipeline section is communicated with the heating pipeline; the first cooling member and the first heating member are used for flowing into heat exchange medium; the temperature of the heat exchange medium in the first cooling member is lower than the temperature of the heat exchange medium in the first heating member.

Description

Technical Field

[0001] This application belongs to the field of dehumidification technology, specifically relating to a dehumidification system. Background Technology

[0002] In existing lithium battery manufacturing processes, environmental requirements can be broadly categorized into two types: lithium iron phosphate batteries, which typically require an ambient humidity of around 30%, and nickel-cobalt-manganese batteries, which typically require around 2%. For the 30% humidity requirement, single-rotor dehumidifiers are commonly used. These dehumidifiers have a large circular rotor, requiring a significant amount of space. Furthermore, space needs to be reserved on both sides of the rotor for installation and maintenance, further increasing the overall size of the dehumidifier and resulting in low space utilization in battery production plants. Utility Model Content

[0003] The purpose of this application is to provide a dehumidification system that at least solves the problem of low space utilization in battery manufacturing plants.

[0004] This application provides a dehumidification system, which includes: an air inlet duct, a drying duct, a mixing duct, a cooling and drying duct, and a heating duct; The air inlet pipe, the drying pipe, the mixing pipe, the cooling and drying pipe, and the heating pipe are connected in sequence. The air inlet pipe has an air inlet, the mixing pipe has a mixing port, and the heating pipe has an air outlet. The heating pipe is used to heat the fluid flowing into the heating pipe and discharge the fluid through the air outlet. The cooling and drying pipeline assembly includes a cooling and drying pipe section, a first cooling element, and a first heating element. The first cooling element and the first heating element are located within the cooling and drying pipe section. The inlet end of the cooling and drying pipe section is connected to the mixing air pipeline, and the outlet end of the cooling and drying pipe section is connected to the heating pipeline. The first cooling element and the first heating element are used for the flow of heat exchange medium. The temperature of the heat exchange medium in the first cooling element is lower than the temperature of the heat exchange medium in the first heating element.

[0005] Optionally, the cooling and drying pipe section includes a first cooling and drying pipe section and a second cooling and drying pipe section, the inlet end of the first cooling and drying pipe section and the inlet end of the second cooling and drying pipe section are both connected to the mixing air pipe, and the outlet end of the first cooling and drying pipe section and the outlet end of the second cooling and drying pipe section are both connected to the heating pipe. Both the first cooling and drying pipe section and the second cooling and drying pipe section are equipped with the first cooling element and the first heating element.

[0006] Optionally, a first valve is provided at the inlet end of the first cooling and drying pipe section, and a second valve is provided at the inlet end of the second cooling and drying pipe section; Specifically, when the first valve is in the open state, the second valve is in the closed state; when the first valve is in the closed state, the second valve is in the open state.

[0007] Optionally, the dehumidification system further includes a refrigeration unit, which has a refrigeration end and a warming end, wherein the temperature of the heat exchange medium flowing out from the refrigeration end is lower than the temperature of the heat exchange medium flowing out from the warming end. The first cooling element includes a cold pipe for the flow of a heat exchange medium, and the first heating element includes a heat pipe for the flow of a heat exchange medium. The inlet and outlet ends of the cold pipe in the first cooling and drying pipe section and the inlet and outlet ends of the cold pipe in the second cooling and drying pipe section are all connected to the refrigeration end, so that the heat exchange medium flowing out from the refrigeration end circulates in the cold pipe. The inlet and outlet ends of the heat pipe in the first cooling and drying pipe section and the inlet and outlet ends of the heat pipe in the second cooling and drying pipe section are all connected to the hot end, so that the heat exchange medium flowing out from the hot end circulates in the heat pipe.

[0008] Optionally, the dehumidification system further includes a defrosting pipe, a second heat pipe, and a second fan; The outlet ends of the first cooling and drying pipe section and the second cooling and drying pipe section are both connected to the inlet end of the defrosting pipe, and the outlet end of the defrosting pipe is connected to the inlet end of the first cooling and drying pipe section and the inlet end of the second cooling and drying pipe section, respectively. The second heat pipe and the second fan are arranged in the defrosting pipe. Along the flow direction of the fluid flowing into the defrosting pipe from the first cooling and drying pipe section or the second cooling and drying pipe section, the second fan and the second heat pipe are distributed in sequence. The outlet ends of the heat pipes in the first cooling and drying pipe section and the second cooling and drying pipe section are both connected to the inlet section of the second heat pipe. The outlet end of the second heat pipe is connected to the warm end of the refrigerator. The first cooling and drying pipe section is connected to a first exhaust pipe, which is used to discharge fluid flowing into the first cooling and drying pipe section from the defrosting pipe; the second cooling and drying pipe section is connected to a second exhaust pipe, which is used to discharge fluid flowing into the second cooling and drying pipe section from the defrosting pipe.

[0009] Optionally, the dehumidification system further includes a third heating element; The third heating element is disposed in the defrosting pipe and along the flow direction of the fluid in the defrosting pipe. The third heating element is located on the side of the second heat pipe away from the second fan, so that the fluid flowing through the second heat pipe is reheated by the third heating element.

[0010] Optionally, the dehumidification system further includes a heat exchange plate assembly, wherein the outlet end of the second heat pipe is connected to the hot end of the refrigerator through the heat exchange plate assembly, and the heat exchange plate assembly is used to exchange heat and cool the heat exchange medium flowing through the heat exchange plate assembly. The dehumidification system also includes a chiller connected to the heat exchange plate assembly. The chiller is used to transfer cold water to the heat exchange plate assembly to cool the heat exchange medium.

[0011] Optionally, the dehumidification system further includes a fourth heat pipe, which is disposed in the heating pipe; The outlet end of the first cooling and drying pipe section and the outlet end of the second cooling and drying pipe section are both connected to the inlet end of the heating pipe. The inlet end of the fourth heat pipe is connected to the warm end, and the outlet end of the fourth heat pipe is connected to the inlet end of the second heat pipe.

[0012] Optionally, the dehumidification system further includes a filter pipeline and a first filter element, wherein the first filter element is disposed in the filter pipeline; The inlet end of the filter pipe is connected to the air outlet of the heating pipe, and the outlet end of the filter pipe is used to discharge the fluid. Alternatively, the inlet end of the filter pipe is connected to the outlet end of the mixing pipe, and the outlet end of the filter pipe is connected to the inlet end of the first cooling and drying pipe section and the inlet end of the second cooling and drying pipe section.

[0013] Optionally, the dehumidification system further includes a first power pump and a second power pump; The cooling end has a first liquid outlet and a first liquid inlet. The first power pump is connected to the first liquid outlet. The inlet end of the cold pipe in the first cooling and drying pipe section and the inlet end of the cold pipe in the second cooling and drying pipe section are both connected to the first power pump. The outlet end of the cold pipe in the first cooling and drying pipe section and the outlet end of the cold pipe in the second cooling and drying pipe section are both connected to the first liquid inlet. The heated end has a second liquid outlet and a second liquid inlet. The second power pump is connected to the second liquid outlet. The inlet end of the heat pipe in the first cooling and drying pipe section and the inlet end of the heat pipe in the second cooling and drying pipe section are both connected to the second power pump. The outlet end of the heat pipe in the first cooling and drying pipe section and the outlet end of the heat pipe in the second cooling and drying pipe section are both connected to the second liquid inlet.

[0014] In this embodiment, the air inlet duct, drying duct, mixing duct, cooling-drying duct, and heating duct are sequentially connected and interconnected. The air inlet duct has an air inlet, the mixing duct has a mixing outlet, and the heating duct has an air outlet. Therefore, fresh air can enter the air inlet duct from the air inlet, and then flow from the air inlet duct into the drying duct section. The drying duct dries the fresh air flowing out of the air inlet duct, allowing the dried fresh air to flow into the mixing duct. The mixing duct has a mixing outlet, through which gas flows into the mixing duct and mixes with the fresh air to form a mixed gas. The mixed gas can flow into the cooling-drying duct, where it flows and is condensed and dried. Then, the mixed gas flows into the heating duct and is heated. The heated mixed gas meets the temperature requirements and flows out from the air outlet, thus ensuring that dry and appropriately heated gas flows into the factory where the dehumidification system is installed. In addition, the cooling and drying pipeline assembly includes a cooling and drying pipe section, a first cooling element, and a first heating element. The first cooling element and the first heating element are located inside the cooling and drying pipe section. The two ends of the cooling and drying pipe section are connected to the mixing pipe and the heating pipe, respectively. Therefore, a lower temperature heat exchange medium can flow through the first cooling element, and a higher temperature heat exchange medium can flow through the first heating element. This allows the mixed gas to flow through the cooling and drying pipe section, passing through the first cooling element and the first heating element. At this time, a lower temperature heat exchange medium flows into the first cooling element, causing the mixed gas to be condensed and dried. When the outer wall of the first cooling element is frosted due to low temperature, a higher temperature heat exchange medium can flow into the first heating element. This allows the first heating element to dissipate heat to defrost the first cooling element, preventing the mixed gas from being blocked by the frost on the outer wall of the first cooling element when it flows through the first cooling element and the first heating element, thus avoiding the problem of obstructed flow of the mixed gas. That is, in the embodiments of this application, by setting a first cooling element and a first heating element in the cooling and drying pipe section, the mixed gas is condensed and dried by the first cooling element, which is equivalent to dehumidifying the mixed gas. The presence of the first heating element can ensure that the mixed gas can always flow through the first cooling element to be dehumidified, thereby improving the dehumidification efficiency. Attached Figure Description

[0015] The above and / or additional aspects and advantages of this application will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which: Figure 1 This is a schematic diagram of one of the dehumidification systems provided in an embodiment of this application; Figure 2 This is a second schematic diagram illustrating a dehumidification system provided in an embodiment of this application; Figure 3 This is the third schematic diagram of a dehumidification system provided in an embodiment of this application; Figure 4 This is a schematic diagram illustrating a second filter element installed in an air inlet duct according to an embodiment of this application; Figure 5 This is a schematic diagram showing a drying pipeline with a second cooling element provided in an embodiment of this application; Figure 6 This diagram illustrates a defrosting pipe provided in an embodiment of this application. Figure 7 This diagram illustrates a filter pipeline provided in an embodiment of this application. Figure 8 This diagram illustrates a first cooling element and a first heating element provided in an embodiment of this application. Figure 9 This diagram illustrates a heating pipeline provided in an embodiment of this application. Figure 10 This diagram illustrates the airflow in a first cooling pipe section, a second cooling pipe section, and a defrosting pipe, as provided in an embodiment of this application.

[0016] Figure label: 001: First valve; 002: Second valve; 10: Air inlet duct; 11: Second filter element; 20: Drying pipe section; 21: Second cooling element; 30: Mixing air duct; 31: First fan; 40: Cooling and drying duct; 41: First cooling and drying pipe section; 42: Second cooling and drying pipe section; 50: Heating duct; 51: Fourth heat pipe; 61: First cooling element; 62: First heating element; 70: Refrigeration unit; 71: Refrigeration end; 72: Warm end; 80: Defrosting duct; 81: Second heat pipe; 82: Second fan; 90: Third heating element; 100: Heat exchanger assembly; 110: Chilled water unit; 120: Filter duct; 121: First filter element; 130: First power pump; 140: Second power pump. Detailed Implementation

[0017] The embodiments of this application will now be described in detail. Examples of these embodiments are illustrated in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this application, and should not be construed as limiting this application. All other embodiments obtained by those skilled in the art based on the embodiments of this application without inventive effort are within the scope of protection of this application.

[0018] The terms "first" and "second" in the specification and claims of this application may explicitly or implicitly include one or more of the features. In the description of this application, unless otherwise stated, "multiple" means two or more. Furthermore, "and / or" in the specification and claims indicates at least one of the connected objects, and the character " / " generally indicates that the preceding and following objects are in an "or" relationship.

[0019] In the description of this application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0020] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0021] like Figures 1 to 7 As shown, the dehumidification system includes: an air inlet duct 10, a drying duct 20, a mixing duct 30, a cooling and drying duct 40, and a heating duct 50.

[0022] Air inlet duct 10, drying duct 20, mixing duct 30, cooling and drying duct 40, and heating duct 50 are connected in sequence. Air inlet duct 10 has an air inlet, mixing duct 30 has a mixing port, and heating duct 50 has an air outlet. Heating duct 50 is used to heat the fluid flowing into it and discharge the fluid through the air outlet. Cooling and drying duct 40 includes a cooling and drying section, a first cooling element 61, and a first heating element 62. The first cooling element 61 and the first heating element 62 are located inside the cooling and drying section. The inlet end of the cooling and drying section is connected to the mixing duct 30, and the outlet end of the cooling and drying section is connected to the heating duct 50. The first cooling element 61 and the first heating element 62 are used for the flow of heat exchange medium. The temperature of the heat exchange medium in the first cooling element 61 is lower than the temperature of the heat exchange medium in the first heating element 62.

[0023] In this embodiment, since the air inlet duct 10, drying duct 20, mixing duct 30, cooling-drying duct 40, and heating duct 50 are connected in sequence, the air inlet duct 10 has an air inlet, the mixing duct 30 has a mixing port, and the heating duct 50 has an air outlet, fresh air can enter the air inlet duct 10 from the air inlet. Then, the fresh air flows from the air inlet duct 10 into the drying duct 20, where it dries the fresh air flowing out of the air inlet duct 10, allowing the dried fresh air to flow into the mixing duct 30. Gas flows into the mixing duct 30 through the mixing port and mixes with fresh air to form a mixed gas. The mixed gas then flows into the cooling and drying duct 40 under the action of the first fan 31. The mixed gas flows in the cooling and drying duct 40 and is condensed and dried by the cooling and drying duct 40. After that, the mixed gas flows into the heating duct 50 and is heated by the heating duct 50. The heated mixed gas meets the temperature requirements and flows out from the air outlet, so that dry and appropriately heated gas flows into the factory where the dehumidification system is installed.

[0024] In addition, the cooling and drying pipeline 40 includes a cooling and drying pipe section, a first cooling element 61, and a first heating element 62. The first cooling element 61 and the first heating element 62 are located inside the cooling and drying pipe section. The two ends of the cooling and drying pipe section are connected to the mixing pipe 30 and the heating pipe 50, respectively. Therefore, a lower temperature heat exchange medium can flow through the first cooling element 61, and a higher temperature heat exchange medium can flow through the first heating element 62. As the mixed gas flows through the cooling and drying pipe section, it flows through the first cooling element 61 and the first heating element 62. At this time, a lower temperature heat exchange medium flows into the first cooling element 61, causing the mixed gas to be condensed and dried. Due to the low temperature, frost forms on the outer wall of the first cooling element 61. Then, a heat exchange medium can flow into the first heating element 62, so that the first heating element 62 can dissipate heat to defrost the first cooling element 61. This avoids the problem of the mixed gas being blocked by the frost on the outer wall of the first cooling element 61 when it flows through the first cooling element 61 and the first heating element 62, which would hinder the flow of the mixed gas.

[0025] In other words, in this embodiment, by setting a first cooling element 61 and a first heating element 62 in the cooling and drying pipe section, the mixed gas is condensed and dried by the first cooling element 61, which is equivalent to dehumidifying the mixed gas. The first heating element 62 can reduce frost formation on the outer wall of the first cooling element 61, which helps the mixed gas to flow through the first cooling element 61 and be dehumidified. In addition, the first cooling element 61 and the first heating element 62 can be installed according to the space in the battery production plant, or the shape of the first cooling element 61 and the first heating element 62 can be changed according to actual needs, so that the space occupied by the first cooling element 61 and the first heating element 62 is smaller, effectively avoiding the problem that the overall volume of the dehumidifier is large due to the use of a circular rotor, resulting in low space utilization in the battery production plant.

[0026] In one embodiment, a first fan 31 is provided in the mixing duct 30. When the first fan 31 in the mixing duct 30 is running, the gas in the environment where the dehumidification system is located flows into the mixing duct 30 through the mixing port and mixes with fresh air to form a mixed gas. The mixed gas can then flow into the cooling and drying duct 40 under the action of the first fan 31.

[0027] It should be noted that, in the embodiments of this application, as Figure 8 As shown, the first cooling element 61 and the first heating element 62 can be intertwined, so that after frost forms on the outer wall of the first cooling element 61, after a heat exchange medium with a higher temperature is introduced into the first heating element 62, the heat emitted by the first heating element 62 can be quickly transferred to the first cooling element 61, so that the frost on the outer wall of the first cooling element 61 can be quickly removed.

[0028] Furthermore, in this embodiment, the shapes of the first cooling element 61 and the first heating element 62 can be set according to actual needs. For example, both the first cooling element 61 and the first heating element 62 can be in the shape of a circular coil, or, for example, both the first cooling element 61 and the first heating element 62 can be in the shape of a square coil. This embodiment does not limit the specific shape of either.

[0029] Additionally, in some embodiments, such as Figure 1 As shown, the cooling and drying pipe section includes a first cooling and drying pipe section 41 and a second cooling and drying pipe section 42. The inlet end of the first cooling and drying pipe section 41 and the inlet end of the second cooling and drying pipe section 42 are both connected to the mixing air pipe 30, and the outlet end of the first cooling and drying pipe section 41 and the outlet end of the second cooling and drying pipe section 42 are both connected to the heating pipe 50. The first cooling and drying pipe section 41 and the second cooling and drying pipe section 42 are each provided with a first cooling element 61 and a first heating element 62.

[0030] Since the inlet ends of the first cooling and drying pipe section 41 and the second cooling and drying pipe section 42 are both connected to the mixing pipe 30, and the outlet ends of the first cooling and drying pipe section 41 and the second cooling and drying pipe section 42 are both connected to the heating pipe 50, the mixed gas in the mixing pipe 30 can flow into the first cooling and drying pipe section 41 and / or into the second cooling and drying pipe section 42, and the gas in the first cooling and drying pipe section 41 and the gas in the second cooling and drying pipe section 42 can flow into the heating pipe 50 and be heated. In addition, both the first cooling and drying pipe section 41 and the second cooling and drying pipe section 42 are equipped with a first cooling element 61 and a first heating element 62, so that the mixed gas in the mixing pipe 30 can be cooled and dried after flowing into the first cooling and drying pipe section 41 and / or the second cooling and drying pipe section 42. Furthermore, the existence of the first cooling and drying pipe section 41 and the second cooling and drying pipe section 42 means that if one of them fails and cannot be used, the other can be used normally. That is, when the first cooling and drying pipe section 41 fails, the second cooling and drying pipe section 42 can cool and dry the mixed gas, and when the second cooling and drying pipe section 42 fails, the first cooling and drying pipe section 41 can cool and dry the mixed gas. Furthermore, when frost forms on the first cooling element 61 in the first cooling and drying pipe section 41 and requires defrosting, the mixed gas can flow only into the second cooling and drying pipe section 42, allowing the first heating element 62 in the first cooling and drying pipe section 41 to defrost the first cooling element 61. Similarly, when frost forms on the first cooling element 61 in the second cooling and drying pipe section 42 and requires defrosting, the mixed gas can flow only into the first cooling and drying pipe section 41, allowing the first heating element 62 in the second cooling and drying pipe section 42 to defrost the first cooling element 61. In other words, by setting up the first cooling and drying pipe section 41 and the second cooling and drying pipe section 42, it can be ensured that the mixed gas flowing out of the mixing pipe 30 is condensed and dried, thereby ensuring that the dehumidification system, during operation, can continuously deliver appropriately priced and dry gas from the heating pipe 50.

[0031] Additionally, in some embodiments, such as Figure 1 As shown, a first valve 001 is provided at the inlet end of the first cooling and drying pipe section 41, and a second valve 002 is provided at the inlet end of the second cooling and drying pipe section 42; wherein, when the first valve 001 is in the open state, the second valve 002 is in the closed state; when the first valve 001 is in the closed state, the second valve 002 is in the open state.

[0032] Since a first valve 001 is installed at the inlet end of the first cooling and drying pipe section 41 and a second valve 002 is installed at the inlet end of the second cooling and drying pipe section 42, when it is necessary to remove the frost on the outer wall of the first cooling element 61 in the first cooling and drying pipe section 41, the first valve 001 can be closed and the second valve 002 can be opened. At this time, the mixed gas in the mixing pipe 30 can flow into the second cooling and drying pipe section 42 and be condensed and dried by the first cooling element 61 in the second cooling and drying pipe section 42. Furthermore, a higher temperature heat exchange medium can be introduced into the first heating element 62 in the first cooling and drying pipe section 41, thereby activating the first heating element 62 in the first cooling and drying pipe section 41. This allows for defrosting of the first cooling element 61 in the first cooling and drying pipe section 41. When it is necessary to remove the frost from the outer wall of the first cooling element 61 in the second cooling and drying pipe section 42, the second valve 002 can be closed and the first valve 001 opened. At this time, the mixed gas in the mixing pipe 30 can flow into the first cooling and drying pipe section 41 and be condensed and dried by the first cooling element 61. Meanwhile, a higher temperature heat exchange medium can be introduced into the first heating element 62 in the second cooling and drying pipe section 42, thus allowing the first heating element 62 in the second cooling and drying pipe section 42 to defrost the first cooling element 61. In other words, by setting the first valve 001 and the second valve 002, it is easy to control the flow of the mixed gas in the mixing pipe 30 into the first cooling and drying pipe section 41 or the second cooling and drying pipe section 42.

[0033] It should be noted that both the first valve 001 and the second valve 002 can be solenoid valves, which facilitates the control of the first valve 001 and the second valve 002, enabling automated control of the first valve 001 and the second valve 002. Of course, the first valve 001 and the second valve 002 can also be mechanical valves. This application does not limit the specific application to this type of valve.

[0034] Additionally, in some embodiments, such as Figure 1As shown, the dehumidification system also includes a chiller 70, which has a cooling end 71 and a warm end 72. The temperature of the heat exchange medium flowing out of the cooling end 71 is lower than the temperature of the heat exchange medium flowing out of the warm end 72. The first cooling element 61 includes a cold pipe for the flow of the heat exchange medium, and the first heating element 62 includes a heat pipe for the flow of the heat exchange medium. The inlet and outlet ends of the cold pipe in the first cooling and drying pipe section 41 and the inlet and outlet ends of the cold pipe in the second cooling and drying pipe section 42 are all connected to the cooling end 71 of the chiller 70, so that the heat exchange medium flowing out of the cooling end 71 circulates in the cold pipe. The inlet and outlet ends of the heat pipe in the first cooling and drying pipe section 41 and the inlet and outlet ends of the heat pipe in the second cooling and drying pipe section 42 are all connected to the warm end 72 of the chiller 70, so that the heat exchange medium flowing out of the warm end 72 circulates in the heat pipe.

[0035] With this configuration, when the cold pipes in the second cooling and drying pipe section 42 need defrosting, the mixed gas in the mixing duct 30 can flow only into the first cooling and drying pipe section 41. The heat exchange medium flowing out from the cooling end 71 of the refrigerator 70 can circulate in the cold pipes of the first cooling and drying pipe section 41, allowing the cold pipes in the first cooling and drying pipe section 41 to continuously condense and dry the mixed gas flowing through it. Meanwhile, the heat exchange medium flowing out from the warm end 72 of the refrigerator 70 can circulate in the hot pipes 62 of the second cooling and drying pipe section 42, further drying the cold pipes in the second cooling and drying pipe section 42. Defrosting is performed; when the cold pipes in the first cooling and drying pipe section 41 need defrosting, the mixed gas in the mixing pipe 30 can flow only into the second cooling and drying pipe section 42. The heat exchange medium flowing out of the cooling end 71 of the refrigerator 70 can circulate in the cold pipes of the second cooling and drying pipe section 42, so that the cold pipes in the second cooling and drying pipe section 42 continuously condense and dry the mixed gas flowing through the second cooling and drying pipe section 42. At the same time, the heat exchange medium flowing out of the warm end 72 of the refrigerator 70 can circulate in the hot pipes of the first cooling and drying pipe section 41, defrosting the cold pipes in the first cooling and drying pipe section 41. In other words, by setting up the refrigerator 70, the dehumidification system can continuously condense and dry the mixed gas in the mixing pipe 30 during operation.

[0036] It should be noted that in the embodiments of this application, the heat exchange medium can be ethylene glycol. Ethylene glycol has characteristics such as low melting point, high boiling point, and low toxicity, making the dehumidification system relatively safe to use. Ethylene glycol has a melting point of -12.9℃ and a boiling point of 197.3℃.

[0037] In some embodiments, the dehumidification system further includes a defrosting pipe 80, a second heat pipe 81, and a second fan 82; the outlet end of the first cooling and drying pipe section 41 and the outlet end of the second cooling and drying pipe section 42 are both connected to the inlet end of the defrosting pipe 80, and the outlet end of the defrosting pipe 80 is connected to the inlet end of the first cooling and drying pipe section 41 and the inlet end of the second cooling and drying pipe section 42, respectively; the second heat pipe 81 and the second fan 82 are disposed in the defrosting pipe 80, along the flow direction of the fluid flowing into the defrosting pipe 80 from the first cooling and drying pipe section 41 or the second cooling and drying pipe section 42. The fan 82 and the second heat pipe 81 are distributed sequentially. The outlet end of the heat pipe in the first cooling and drying pipe section 41 and the outlet end of the heat pipe in the second cooling and drying pipe section 42 are both connected to the inlet section of the second heat pipe 81. The outlet end of the second heat pipe 81 is connected to the warm end 72. The first cooling and drying pipe section 41 is connected to a first exhaust pipe, which is used to discharge the fluid flowing into the first cooling and drying pipe section 41 from the defrost pipe 80. The second cooling and drying pipe section 42 is connected to a second exhaust pipe, which is used to discharge the fluid flowing into the second cooling and drying pipe section 42 from the defrost pipe 80.

[0038] It is understood that the outlet end of the first cooling and drying pipe section 41 refers to the part from which the fluid flows out of the first cooling and drying pipe section 41. The first cooling and drying pipe section 41 may have one or more outlets for the fluid to flow out, as needed. The inlet end of the first cooling and drying pipe section 41 refers to the part from which the fluid enters the first cooling and drying pipe section 41. The first cooling and drying pipe section 41 may have one or more inlets for the fluid to enter, as needed.

[0039] The inlet and outlet of the second cooling and drying pipe section 42 are configured using the same logic as the inlet and outlet of the first cooling and drying pipe section 41.

[0040] It should be noted that when there are multiple outlets on the first cooling and drying pipe section 41 for fluid to flow out of it, and multiple inlet points on the second cooling and drying pipe section 42 for fluid to flow out of it, and multiple inlet points on the second cooling and drying pipe section 42 for fluid to flow in, it is equivalent to the first cooling and drying pipe section 41 having multiple inlet ends and multiple outlet ends, and the second cooling and drying pipe section 42 having multiple inlet ends and multiple outlet ends. The multiple inlet ends may include a first inlet end and a second inlet end, and the multiple outlet ends may include a first outlet end, a second outlet end, and a third outlet end. In this case, the first inlet end of both the first cooling and drying pipe section 41 and the first inlet end of the second cooling and drying pipe section 42 are connected to the mixing air pipe 30, and the first outlet end of both the first cooling and drying pipe section 41 and the first outlet end of the second cooling and drying pipe section 42 are connected to the heating pipe 50. A first valve 001 is provided at the first inlet end of the first cooling and drying pipe section 41, and a second valve 002 is provided at the first inlet end of the second cooling and drying pipe section 42.

[0041] For example, in some embodiments, such as Figure 1 , Figure 6 and Figure 10 As shown, the dehumidification system also includes a defrosting pipe 80, a second heat pipe 81, and a second fan 82; the second outlet end of the first cooling and drying pipe section 41 and the second outlet end of the second cooling and drying pipe section 42 are both connected to the inlet end of the defrosting pipe 80, and the outlet end of the defrosting pipe 80 is connected to the second inlet end of the first cooling and drying pipe section 41 and the second inlet end of the second cooling and drying pipe section 42, respectively. The second heat pipe 81 and the second fan 82 are installed in the defrosting pipe 80, along the flow direction of the fluid flowing into the defrosting pipe 80 from the first cooling and drying pipe section 41 or the second cooling and drying pipe section 42. The pipes 81 are distributed sequentially. The outlet ends of the heat pipes in the first cooling and drying pipe section 41 and the second cooling and drying pipe section 42 are connected to the inlet end of the second heat pipe 81. The outlet end of the second heat pipe 81 is connected to the warm end 72 of the refrigerator 70. The third outlet end of the first cooling and drying pipe section 41 is connected to a first exhaust pipe, which is used to discharge the fluid flowing into the first cooling and drying pipe section 41 from the defrost pipe 80. The third outlet end of the second cooling and drying pipe section 42 is connected to a second exhaust pipe, which is used to discharge the fluid flowing into the second cooling and drying pipe section 42 from the defrost pipe 80.

[0042] With such settings, such as Figure 1 and 10As shown, when defrosting is required in the cold pipes of the first cooling and drying pipe section 41, the mixed gas in the mixing pipe 30 can flow only into the second cooling and drying pipe section 42. The presence of the second fan 82 allows a portion of the gas flowing through the second cooling and drying pipe section 42 to exit the second outlet end of the second cooling and drying pipe section 42 and flow into the defrosting pipe 80 through the inlet end of the defrosting pipe 80. The remaining gas still flows to the heating pipe 50. As the gas flows through the defrosting pipe 80, the warm end of the refrigerator 70 can transfer the heat exchange medium to the second heat pipe 81 in the defrosting pipe 80, and the warm end of the refrigerator 70 can transfer the heat exchange medium to the heat pipes in the first cooling and drying pipe section 41. The gas in the defrosting pipe 80 flows through the second heat pipe 81, causing the gas to be heated. The heated gas is then heated by the second fan. Under the action of 82, the gas can flow out from the outlet end of the defrosting pipe 80 and flow into the first cooling and drying pipe section 41 through the second inlet end of the first cooling and drying pipe section 41. The heated gas can then flow through the cold pipe in the first cooling and drying pipe section 41 to defrost the cold pipe. The hot pipe in the first cooling and drying pipe section 41 will also defrost the cold pipe, thereby improving the defrosting efficiency of the cold pipe in the first cooling and drying pipe section 41. After the gas flowing into the first cooling and drying pipe section 41 from the defrosting pipe 80 passes through the cold pipe, the defrosting of the cold pipe makes the gas more humid. The more humid gas can then flow into the first exhaust pipe through the third outlet end of the first cooling and drying pipe section 41 and be discharged through the first exhaust pipe, thus preventing the more humid gas from remaining in the first cooling and drying pipe section 41.

[0043] Similarly, such as Figure 1 and Figure 10As shown, when defrosting is required in the cold pipes of the second cooling and drying pipe section 42, the mixed gas in the mixing pipe 30 can flow only into the first cooling and drying pipe section 41. The presence of the second fan 82 allows a portion of the gas flowing through the first cooling and drying pipe section 41 to exit the second outlet end of the first cooling and drying pipe section 41 and flow into the defrosting pipe 80 through the inlet end of the defrosting pipe 80. The remaining gas still flows to the heating pipe 50. As the gas flows through the defrosting pipe 80, the warm end of the refrigerator 70 can transfer the heat exchange medium to the second heat pipe 81 in the defrosting pipe 80. The warm end of the refrigerator 70 can also transfer the heat exchange medium to the heat pipes in the second cooling and drying pipe section 42. The gas in the defrosting pipe 80 flows through the second heat pipe 81, causing the gas to be heated. The heated gas is then heated by the second fan. Under the action of 82, the gas can flow out from the outlet end of the defrosting pipe 80 and flow into the second cooling and drying pipe section 42 through the second inlet end of the second cooling and drying pipe section 42. The heated gas can then flow through the cold pipe in the second cooling and drying pipe section 42 to defrost the cold pipe. The hot pipe in the second cooling and drying pipe section 42 will also defrost the cold pipe, thereby improving the defrosting efficiency of the cold pipe in the second cooling and drying pipe section 42. After the gas flowing into the second cooling and drying pipe section 42 from the defrosting pipe 80 passes through the cold pipe, the defrosting of the cold pipe makes the gas more humid. The more humid gas can then flow into the second exhaust pipe through the third outlet end of the second cooling and drying pipe section 42 and be discharged through the second exhaust pipe, thus preventing the more humid gas from remaining in the second cooling and drying pipe section 42.

[0044] It should be noted that, in the embodiments of this application, when the dehumidification system is installed in the battery production plant, the first exhaust duct can be connected to the outside of the battery production plant, and the second exhaust duct can be connected to the outside of the battery production plant, so that the relatively humid gas flowing out from the first exhaust duct flows to the outside of the battery production plant, and the relatively humid gas flowing out from the second exhaust duct flows to the outside of the battery production plant.

[0045] In addition, in this embodiment, a third valve can be installed at the first outlet end of the first cooling and drying pipe section 41, and a fourth valve can be installed at the first outlet end of the second cooling and drying pipe section 42. When the third valve is open, the fourth valve is closed, and when the fourth valve is open, the third valve is closed. Specifically, when gas needs to flow through the first cooling and drying pipe section 41, both the first valve 001 and the third valve on the first cooling and drying pipe section 41 can be open, while both the second valve 002 and the fourth valve on the second cooling and drying pipe section 42 can be closed; conversely, when gas needs to flow through the second cooling and drying pipe section 42, both the first valve 001 and the third valve on the first cooling and drying pipe section 41 can be closed, while both the second valve 002 and the fourth valve on the second cooling and drying pipe section 42 can be open.

[0046] Additionally, in some embodiments, such as Figure 6 As shown, the dehumidification system also includes a third heating element 90; the third heating element 90 is disposed in the defrost pipe 80 and along the flow direction of the fluid in the defrost pipe 80, the third heating element 90 is located on the side of the second heat pipe 81 away from the second fan 82, so that the fluid flowing through the second heat pipe 81 is reheated by the third heating element 90.

[0047] With this setup, when defrosting is required on the cold pipes in the first cooling and drying pipe section 41 or the second cooling and drying pipe section 42, once the gas flows into the defrosting pipe 80, the gas can first flow through the second heat pipe 81 under the action of the second fan 82, and then the gas flows through the third heating element 90. Thus, the gas is essentially heated twice, ensuring that the gas temperature flowing into the first cooling and drying pipe section 41 or the second cooling and drying pipe section 42 from the defrosting pipe 80 is relatively high, thereby improving the defrosting efficiency of the cold pipes in the first cooling and drying pipe section 41 or the second cooling and drying pipe section 42.

[0048] It should be noted that the third heating element 90 can be an electric heating wire. Of course, the third heating element 90 can also be other types of heating structures, such as an electric heating plate. The specific type of the third heating element 90 is not limited in this embodiment.

[0049] Additionally, in some embodiments, such as Figures 1 to 3 As shown, the dehumidification system also includes a heat exchange plate assembly 100. The outlet end of the second heat pipe 81 is connected to the hot end 72 of the chiller 70 through the heat exchange plate assembly 100. The heat exchange plate assembly 100 is used to exchange heat and cool the heat exchange medium flowing through the heat exchange plate assembly 100. The dehumidification system also includes a chiller 110, which is connected to the heat exchange plate assembly 100. The chiller 110 is used to transfer cold water into the heat exchange plate assembly 100 so that the heat exchange plate assembly 100 cools the heat exchange medium.

[0050] With this setup, the heat exchange medium flowing out from the outlet of the second heat pipe 81 will flow through the heat exchange plate assembly 100, allowing the heat exchange plate assembly 100 to cool the heat exchange medium. This prevents the temperature of the heat exchange medium flowing into the refrigerator 70 from being too high, which could affect the operation of the refrigerator 70. The chiller 110 is connected to the heat exchange plate assembly 100, and the chiller 110 can transfer cold water to the heat exchange plate assembly 100, so that the heat exchange plate assembly 100 can continuously exchange heat and cool the heat exchange medium flowing through it, thereby enabling the dehumidification system to operate effectively.

[0051] Additionally, in some embodiments, such as Figure 9 As shown, the dehumidification system also includes a fourth heat pipe 51, which is disposed in the heating pipe 50. The outlet ends of the first cooling and drying pipe section 41 and the second cooling and drying pipe section 42 are both connected to the inlet end of the heating pipe 50. The inlet end of the fourth heat pipe 51 is connected to the hot end 72 of the refrigerator 70, and the outlet end of the fourth heat pipe 51 is connected to the inlet end of the second heat pipe 81. With this arrangement, the heat exchange medium flowing out of the hot end 72 of the refrigerator 70 can flow into the fourth heat pipe 51, causing the fourth heat pipe 51 to dissipate heat outward. This ensures that the gas flowing from the first cooling and drying pipe section 41 or the second cooling and drying pipe section 42 is continuously heated when it flows into the heating pipe 50, ensuring that the temperature of the gas flowing out of the heating pipe 50 is suitable for meeting the requirements of the battery production plant. When the first cold pipe drying section 41 is provided with a first outlet end and the second cooling drying section 42 is provided with a first outlet end, the first outlet end of the first cold pipe drying section 41 and the first outlet end of the second cooling drying section 42 are both connected to the inlet end of the heating pipe 50.

[0052] Additionally, in some embodiments, such as Figure 2 and Figure 7 As shown, the dehumidification system also includes a filter pipe 120 and a first filter element 121, with the first filter element 121 disposed within the filter pipe 120. The inlet end of the filter pipe 120 is connected to the outlet end of the heating pipe 50, and the outlet end of the filter pipe 120 is used to discharge fluid. Alternatively, the inlet end of the filter pipe 120 is connected to the outlet end of the mixing pipe 30, and the outlet end of the filter pipe 120 is connected to the inlet end of the first cooling and drying pipe section 41 and the inlet end of the second cooling and drying pipe section 42. This configuration ensures that the gas flowing out of the heating pipe 50 is filtered by the first filter element 121, thereby minimizing impurities in the gas flowing into the battery production plant when the dehumidification system is installed there, thus ensuring the cleanliness of the battery production plant.

[0053] It should be noted that the first filter element 121 can be a filter screen. In addition, when the first cooling and drying pipe section 41 is provided with a first inlet end and the second cooling and drying pipe section 42 is provided with a first inlet end, the outlet end of the filter pipe 120 is connected to the first inlet end of the first cooling and drying pipe section 41 and the first inlet end of the second cooling and drying pipe section 42.

[0054] Additionally, in some embodiments, such as Figure 1 As shown, the dehumidification system also includes a first power pump 130 and a second power pump 140; the cooling end 71 has a first liquid outlet and a first liquid inlet, the first power pump 130 is connected to the first liquid outlet, the inlet end of the cold pipe in the first cooling drying pipe section 41 and the inlet end of the cold pipe in the second cooling drying pipe section 42 are both connected to the first power pump 130, and the outlet end of the cold pipe in the first cooling drying pipe section 41 and the outlet end of the cold pipe in the second cooling drying pipe section 42 are both connected to the first liquid inlet; the warming end 72 has a second liquid outlet and a second liquid inlet, the second power pump 140 is connected to the second liquid outlet, the inlet end of the heat pipe in the first cooling drying pipe section 41 and the inlet end of the heat pipe in the second cooling drying pipe section 42 are both connected to the second power pump 140, and the outlet end of the heat pipe in the first cooling drying pipe section 41 and the outlet end of the heat pipe in the second cooling drying pipe section 42 are both connected to the second liquid inlet. With this configuration, when the first power pump 130 and / or the second power pump 140 are running, it can be effectively ensured that the heat exchange medium flowing out of the refrigerator 70 flows to the corresponding pipe section, which facilitates the circulation of the heat exchange medium in the dehumidification system. That is, the first power pump 130 and the second power pump 140 can provide power for the heat exchange medium flowing out of the refrigerator 70, which facilitates the flow of the heat exchange medium into the corresponding pipe section.

[0055] In addition, in this embodiment, a second filter element 11 can be provided in the air inlet duct 10, so that when fresh air flows into the air inlet duct 10, the second filter element 11 can effectively filter the fresh air, ensuring that the fresh air flowing into the mixing duct 30 contains fewer impurities. The second filter element 11 can be a filter screen.

[0056] In addition, in this embodiment of the application, a second cooling element 21 is provided inside the drying pipeline 20. The inlet end and outlet section of the second cooling element 21 are connected to the cooling end 71 of the refrigerator 70, so that the heat exchange medium flowing out of the cooling end 71 of the refrigerator 70 can flow to the second cooling element 21, so that the second cooling element 21 cools down the drying pipeline 20, thereby cooling and drying the gas flowing through the drying pipeline 20.

[0057] In addition, in this embodiment, a third cold pipe may be provided on the outer wall of the drying pipe 20. The third cold pipe may be wound around the outer wall of the drying pipe 20. The inlet end and outlet end of the third cold pipe are respectively connected to the cooling end 71 of the refrigerator 70. Thus, the heat exchange medium flowing out of the cooling end 71 of the refrigerator 70 can flow to the third cold pipe, so that the third cold pipe cools down the drying pipe 20, thereby cooling and drying the gas flowing through the drying pipe 20.

[0058] The following is a detailed description of the usage process of the dehumidification system provided in the embodiments of this application: The chiller 70 produces low-temperature ethylene glycol, which enters the third cold pipe of the drying pipe 20. This dries the fresh air flowing through the drying pipe 20, maintaining its temperature between 1 and 5°C. The temperature is above 1°C to prevent freezing in the drying pipe 20, and below 5°C to reduce the dehumidification load on the cooling drying pipe 40. Furthermore, if the ambient temperature is below 0°C, the chiller 70 can be disconnected from the third cold pipe. Specifically, the third cold pipe can be equipped with a first control valve, which is kept closed. When the ambient temperature is below -12.9°C, the first control valve opens, maintaining the temperature between -10°C and -5°C to prevent ethylene glycol from solidifying. The dehumidification effect data for this process is shown in the table below.

[0059] In addition, in this embodiment, when the mixed gas flows into the first cooling and drying pipe section 41, the pressure difference between the windward and leeward sides of the first cooling element 61 and the first heating element 62 in the first cooling and drying pipe section 41 can be detected. The pressure on the windward side is P1, and the pressure on the leeward side is P3. The difference between P1 and P3 is ΔP1. If ΔP1 ≥ 300 Pa, then the first cooling element 61 in the first cooling and drying pipe section 41 needs to be defrosted, so that the mixed gas flows into the second cooling and drying pipe section 42. Similarly, when the mixed gas flows into the second cooling and drying pipe section 42, the pressure difference between the windward and leeward sides of the first cooling element 61 and the first heating element 62 in the second cooling and drying pipe section 42 can be detected. The pressure on the windward side is P1, and the pressure on the leeward side is P3. The difference between P1 and P3 is ΔP1. If ΔP1 ≥ 300 Pa, then the first cooling element 61 in the second cooling and drying pipe section 42 needs to be defrosted, so that the mixed gas flows into the first cooling and drying pipe section 41.

[0060] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0061] Although embodiments of this application have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of this application, the scope of which is defined by the claims and their equivalents.

Claims

1. A dehumidification system, characterized in that, The dehumidification system includes: an air inlet duct, a drying duct, a mixing duct, a cooling and drying duct, and a heating duct; The air inlet pipe, the drying pipe, the mixing pipe, the cooling and drying pipe, and the heating pipe are connected in sequence. The air inlet pipe has an air inlet, the mixing pipe has a mixing port, and the heating pipe has an air outlet. The heating pipe is used to heat the fluid flowing into the heating pipe and discharge the fluid through the air outlet. The cooling and drying pipeline includes a cooling and drying pipe section, a first cooling element, and a first heating element. The first cooling element and the first heating element are located within the cooling and drying pipe section. The inlet end of the cooling and drying pipe section is connected to the mixing air pipeline, and the outlet end of the cooling and drying pipe section is connected to the heating pipeline. The first cooling element and the first heating element are used for the flow of heat exchange medium. The temperature of the heat exchange medium in the first cooling element is lower than the temperature of the heat exchange medium in the first heating element.

2. The dehumidification system according to claim 1, characterized in that, The cooling and drying pipe section includes a first cooling and drying pipe section and a second cooling and drying pipe section. The inlet end of the first cooling and drying pipe section and the inlet end of the second cooling and drying pipe section are both connected to the mixing air pipe, and the outlet end of the first cooling and drying pipe section and the outlet end of the second cooling and drying pipe section are both connected to the heating pipe. Both the first cooling and drying pipe section and the second cooling and drying pipe section are equipped with the first cooling element and the first heating element.

3. The dehumidification system according to claim 2, characterized in that, A first valve is provided at the inlet end of the first cooling and drying pipe section, and a second valve is provided at the inlet end of the second cooling and drying pipe section; Specifically, when the first valve is in the open state, the second valve is in the closed state; when the first valve is in the closed state, the second valve is in the open state.

4. The dehumidification system according to claim 2, characterized in that, The dehumidification system also includes a refrigeration unit, which has a refrigeration end and a warming end, wherein the temperature of the heat exchange medium flowing out of the refrigeration end is lower than the temperature of the heat exchange medium flowing out of the warming end. The first cooling element includes a cold pipe for the flow of a heat exchange medium, and the first heating element includes a heat pipe for the flow of a heat exchange medium. The inlet and outlet ends of the cold pipe in the first cooling and drying pipe section and the inlet and outlet ends of the cold pipe in the second cooling and drying pipe section are all connected to the refrigeration end, so that the heat exchange medium flowing out from the refrigeration end circulates in the cold pipe. The inlet and outlet ends of the heat pipe in the first cooling and drying pipe section and the inlet and outlet ends of the heat pipe in the second cooling and drying pipe section are all connected to the hot end, so that the heat exchange medium flowing out from the hot end circulates in the heat pipe.

5. The dehumidification system according to claim 4, characterized in that, The dehumidification system also includes a defrosting pipe, a second heat pipe, and a second fan; The outlet ends of the first cooling and drying pipe section and the second cooling and drying pipe section are both connected to the inlet end of the defrosting pipe, and the outlet end of the defrosting pipe is connected to the inlet end of the first cooling and drying pipe section and the inlet end of the second cooling and drying pipe section, respectively. The second heat pipe and the second fan are arranged in the defrosting pipe. Along the flow direction of the fluid flowing into the defrosting pipe from the first cooling and drying pipe section or the second cooling and drying pipe section, the second fan and the second heat pipe are distributed in sequence. The outlet ends of the heat pipes in the first cooling and drying pipe section and the second cooling and drying pipe section are both connected to the inlet section of the second heat pipe, and the outlet end of the second heat pipe is connected to the warm end. The first cooling and drying pipe section is connected to a first exhaust pipe, which is used to discharge fluid flowing into the first cooling and drying pipe section from the defrosting pipe; the second cooling and drying pipe section is connected to a second exhaust pipe, which is used to discharge fluid flowing into the second cooling and drying pipe section from the defrosting pipe.

6. The dehumidification system according to claim 5, characterized in that, The dehumidification system also includes a third heating element; The third heating element is disposed in the defrosting pipe and along the flow direction of the fluid in the defrosting pipe. The third heating element is located on the side of the second heat pipe away from the second fan, so that the fluid flowing through the second heat pipe is reheated by the third heating element.

7. The dehumidification system according to claim 5, characterized in that, The dehumidification system also includes a heat exchange plate assembly. The outlet end of the second heat pipe is connected to the hot end through the heat exchange plate assembly. The heat exchange plate assembly is used to exchange heat and cool down the heat exchange medium flowing through the heat exchange plate assembly. The dehumidification system also includes a chiller connected to the heat exchange plate assembly. The chiller is used to transfer cold water to the heat exchange plate assembly to cool the heat exchange medium.

8. The dehumidification system according to claim 5, characterized in that, The dehumidification system also includes a fourth heat pipe, which is disposed in the heating pipe; The outlet end of the first cooling and drying pipe section and the outlet end of the second cooling and drying pipe section are both connected to the inlet end of the heating pipe. The inlet end of the fourth heat pipe is connected to the warm end, and the outlet end of the fourth heat pipe is connected to the inlet end of the second heat pipe.

9. The dehumidification system according to claim 8, characterized in that, The dehumidification system further includes a filter pipeline and a first filter element, wherein the first filter element is disposed in the filter pipeline; The inlet end of the filter pipe is connected to the air outlet of the heating pipe, and the outlet end of the filter pipe is used to discharge the fluid. Alternatively, the inlet end of the filter pipe is connected to the outlet end of the mixing pipe, and the outlet end of the filter pipe is connected to the inlet end of the first cooling and drying pipe section and the inlet end of the second cooling and drying pipe section.

10. The dehumidification system according to claim 4, characterized in that, The dehumidification system also includes a first power pump and a second power pump; The cooling end has a first liquid outlet and a first liquid inlet. The first power pump is connected to the first liquid outlet. The inlet end of the cold pipe in the first cooling and drying pipe section and the inlet end of the cold pipe in the second cooling and drying pipe section are both connected to the first power pump. The outlet end of the cold pipe in the first cooling and drying pipe section and the outlet end of the cold pipe in the second cooling and drying pipe section are both connected to the first liquid inlet. The heated end has a second liquid outlet and a second liquid inlet. The second power pump is connected to the second liquid outlet. The inlet end of the heat pipe in the first cooling and drying pipe section and the inlet end of the heat pipe in the second cooling and drying pipe section are both connected to the second power pump. The outlet end of the heat pipe in the first cooling and drying pipe section and the outlet end of the heat pipe in the second cooling and drying pipe section are both connected to the second liquid inlet.

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