Drainage structure and lithium battery material drying equipment

Abstract

The utility model discloses a drainage structure and lithium battery material drying equipment, the drainage structure comprises a box body, two sets of air duct assemblies and a trap assembly, and a mounting space is formed in the box body; the two sets of air duct assemblies are installed in the installation space in an up-down parallel mode, each air duct assembly comprises a fresh air pipe and an air return pipe, the fresh air pipes and the air return pipes are arranged in a crossed mode, sensible heat exchangers are arranged at the crossed positions, and the two ends of each air return pipe are connected with an air return opening and an air exhaust opening respectively. An evaporator is arranged between the air outlet and the sensible heat exchanger, a water pan is arranged below the air return pipe, and the side face of the water pan is connected with a first water drainage pipe. The trap assembly is connected with the first drainage pipe through a pipeline, the trap assembly comprises at least one U-shaped bend, and the U-shaped bend is used for storing water so that external air cannot pass through the U-shaped bend. Accumulated water or condensed water can be rapidly drained, and meanwhile it is guaranteed that external air cannot enter the air duct assembly through the drainage structure.

Description

Technical Field

[0001] The present application relates to the technical field of lithium battery equipment, and in particular to a drainage structure and lithium battery material drying equipment. Background Art

[0002] With the rapid development of the new energy vehicle industry, the performance and quality of lithium batteries, as core components, have a crucial impact on the performance of new energy vehicles. Therefore, the drying of lithium battery materials has become a crucial step in improving their performance and quality. Consequently, the demand for lithium battery material drying equipment is increasing. With the continuous advancement and innovation of technology, the performance and quality of lithium battery material drying equipment are also constantly improving, providing strong support for the development of the lithium battery industry. However, the drainage design of current lithium battery material drying equipment has many problems, such as low drainage efficiency and the tendency for external air to enter the drying duct, causing air mixing and affecting the drying effect. Utility Model Content

[0003] The purpose of the embodiments of the present application is to provide a drainage structure and lithium battery material drying equipment that can quickly drain accumulated water or condensed water while ensuring that external air cannot enter the air duct assembly through the drainage structure.

[0004] To achieve the above objectives, this application adopts the following technical solutions:

[0005] In one aspect, a drainage structure is provided, comprising: a box body having an installation space therein;

[0006] Two sets of air duct assemblies are installed in parallel in the installation space, the air duct assemblies including a fresh air duct and a return air duct, the fresh air duct and the return air duct are arranged crosswise, and a sensible heat exchanger is provided at the crosswise position, the two ends of the return air duct are respectively connected to the return air port and the exhaust port, an evaporator is provided between the exhaust port and the sensible heat exchanger, a water receiving pan is provided below the return air duct, and a first drain pipe is connected to the side of the water receiving pan;

[0007] A water trap assembly is connected to the first drain pipe through a pipeline. The water trap assembly includes at least one U-shaped bend, and the U-shaped bend is used to store water so that external air cannot pass through.

[0008] Furthermore, it also includes a second drain pipe, the second drain pipe includes a first end and a second end, the first end is arranged on the water receiving tray, and the second end is connected to the water trap assembly.

[0009] Furthermore, the vertical height of the first end is lower than or equal to the wall height of the water receiving tray.

[0010] Further, a three-way valve is further included. The three-way valve includes a first valve port, a second valve port, and a third valve port. The first valve port is connected to the first drain pipe, the second valve port is connected to the second end, and the third valve port is connected to the water seal assembly.

[0011] Further, the water seal assembly includes two water seal pipes and two connectors. The two water seal pipes are arranged side by side and are connected and conducted through the two connectors. The connectors are connected to the first drain pipe.

[0012] Further, the water seal pipe includes a horizontal portion, a first U-shaped portion, and a second U-shaped portion. One end of the horizontal portion is connected to the connector, and the other end is connected to one end of the first U-shaped portion. The other end of the first U-shaped portion is connected to the second U-shaped portion. The U-shaped bend is formed in the second U-shaped portion.

[0013] Further, both ends of the first U-shaped portion are arranged downward, and both ends of the second U-shaped portion are arranged upward.

[0014] Further, a base is provided in the box body, and a support member is provided on the base. The support member is arranged below the first U-shaped portion.

[0015] Further, a diversion slope is provided in the water receiving tray.

[0016] On the other hand, a lithium-ion battery material drying device is further provided, including the drainage structure as described in any one of the above.

[0017] The beneficial effects of the present application are as follows: During the drying process of lithium battery materials, fresh air is output after being heated through a fresh air pipe, and then the lithium battery materials are dried. The dried air flows back through the return air pipe. At the position of the sensible heat exchanger where the return air duct intersects with the fresh air pipe, after recovering the heat, it flows towards the exhaust outlet. Due to the functions of the sensible heat exchanger and the evaporator, the moisture in the air is condensed into water and drips into the water receiving tray. The condensed water collected by the water receiving tray flows through the first drain pipe towards the trap assembly. The trap assembly includes one or more U-shaped bends, and there is always a certain amount of water inside these U-shaped bends, forming a water seal. This water seal can effectively prevent external air from flowing reversely into the air duct assembly through the drainage pipe, ensuring the purity of the air inside the drying equipment. Through reasonable pipeline design and the arrangement of the trap assembly, this drainage structure can quickly drain the condensed water in the water receiving tray, preventing water from accumulating inside the drying equipment and ensuring the continuous and efficient operation of the equipment. The trap assembly effectively prevents external air from entering the drying air duct through the water seal principle, ensuring the air quality and drying effect during the drying process, which is crucial for the drying treatment of lithium battery materials because the mixing of any external impurities may affect the performance and quality of lithium batteries. Since the mixing of external air is avoided, the air humidity and temperature inside the drying equipment can be more precisely controlled, thereby improving the drying effect and ensuring the drying quality of lithium battery materials. In addition, through the heat recovery of the sensible heat exchanger, this equipment can recover and utilize the heat in the exhaust air, reducing energy consumption and also reducing emissions, meeting the environmental protection requirements of energy conservation and emission reduction. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The following further elaborates on the present application in detail with reference to the drawings and embodiments.

[0019] Figure 1 is a perspective view of the lithium battery material drying equipment according to the embodiment of the present application;

[0020] Figure 2 is an embodiment of the present application Figure 1 an enlarged schematic view of point A;

[0021] Figure 3 is a perspective view of the water receiving tray according to the embodiment of the present application;

[0022] Figure 4 is a perspective view of the trap assembly according to the embodiment of the present application;

[0023] Figure 5 is a perspective view of the trap pipe according to the embodiment of the present application;

[0024] Figure 6 is a schematic view of the air duct assembly according to the embodiment of the present application.

[0025] In the figure: 1. Cabinet; 2. Air duct assembly; 201. Fresh air pipe; 202. Return air pipe; 3. Sensible heat exchanger; 4. Return air outlet; 5. Exhaust outlet; 6. Evaporator; 7. Water receiving tray; 701. Water storage level; 8. First drain pipe; 9. Trap assembly; 901. Trap pipe; 902. Connector; 9011. Horizontal part; 9012. First U-shaped part; 9013. Second U-shaped part; 10. Second drain pipe; 11. Support; 12. Three-way valve. Detailed implementation mode

[0026] To make the technical problems solved by this application, the technical solutions adopted, and the achieved technical effects clearer, the technical solutions of the embodiments of this application are further described in detail below. Obviously, the described embodiments are only a part of the embodiments of this application, rather than all the embodiments. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without creative efforts belong to the scope of protection of this application.

[0027] In the description of this application, unless otherwise clearly specified and limited, the terms "connected", "connected", and "fixed" shall be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the internal connection of two components or the interaction relationship between two components. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0028] In this application, unless otherwise clearly specified and limited, the first feature being "above" or "below" the second feature may include the direct contact between the first and second features, or may include the situation where the first and second features are not in direct contact but in contact through other features between them. Moreover, the first feature being "above", "above", and "on" the second feature includes the first feature being directly above and obliquely above the second feature, or simply indicating that the horizontal height of the first feature is higher than that of the second feature. The first feature being "below", "below", and "under" the second feature includes the first feature being directly below and obliquely below the second feature, or simply indicating that the horizontal height of the first feature is lower than that of the second feature.

[0029] As Figures 1 - 6As shown in the figure, this embodiment provides a drainage structure, including: a box body 1, two sets of air duct components 2, and a water trap component 9. An installation space is provided inside the box body 1; the two sets of air duct components 2 are installed in parallel up and down in the installation space. The air duct component 2 includes a fresh air pipe 201 and a return air pipe 202. The fresh air pipe 201 and the return air pipe 202 are arranged crosswise, and a sensible heat exchanger 3 is provided at the crosswise position. The two ends of the return air pipe 202 are respectively connected to a return air outlet 4 and an exhaust outlet 5. An evaporator 6 is provided between the exhaust outlet 5 and the sensible heat exchanger 3. A water receiving tray 7 is provided below the return air pipe 202, and a first drain pipe 8 is connected to the side of the water receiving tray 7; the water trap component 9 is connected to the first drain pipe 8 through a pipeline. The water trap component 9 includes at least one U-shaped bend, and the U-shaped bend is used for storing water so that external air cannot pass through.

[0030] Based on the above solution, during the drying process of lithium battery materials, fresh air is output after being heated through the fresh air pipe 201, and then the lithium battery materials are dried. The dried air flows back through the return air pipe 202. At the position of the sensible heat exchanger 3 where the return air pipe 202 intersects with the fresh air pipe 201, after recovering the heat, it flows to the exhaust outlet 5. Due to the functions of the sensible heat exchanger 3 and the evaporator 6, the moisture in the air is condensed into water and drips into the water receiving tray 7. The condensed water collected by the water receiving tray 7 flows to the water trap component 9 through the first drain pipe 8. The water trap component 9 includes one or more U-shaped bends, and a certain amount of water always exists inside these U-shaped bends, forming a water seal. This water seal can effectively prevent external air from flowing back into the air duct component 2 through the drainage pipeline, ensuring the purity of the air inside the drying equipment. Through reasonable pipeline design and the arrangement of the water trap component 9, this drainage structure can quickly drain the condensed water in the water receiving tray 7, prevent water from accumulating inside the drying equipment, and ensure the continuous and efficient operation of the equipment. The water trap component 9 effectively prevents external air from entering the drying air duct through the water seal principle, ensuring the air quality and drying effect during the drying process, which is crucial for the drying treatment of lithium battery materials because the mixing of any external impurities may affect the performance and quality of lithium batteries. Since the mixing of external air is avoided, the air humidity and temperature inside the drying equipment can be more precisely controlled, thereby improving the drying effect and ensuring the drying quality of lithium battery materials. In addition, through the heat recovery of the sensible heat exchanger 3, this equipment can recover and utilize the heat in the exhaust air, reduce energy consumption, and also reduce emissions, meeting the environmental protection requirements of energy conservation and emission reduction.

[0031] Further, it also includes a second drain pipe 10, which includes a first end and a second end. The first end is disposed on the water receiving tray 7, and the second end is connected to the trap assembly 9. The newly added second drain pipe 10 provides an independent drainage channel, directly connecting the water receiving tray 7 and the trap assembly 9, enabling the condensed water to be discharged more quickly, improving the drainage efficiency, reducing the problem of condensed water accumulation caused by poor drainage, and ensuring the normal operation of the drying equipment. The addition of the second drain pipe 10, combined with the water seal design of the trap assembly 9, provides double protection for the drying equipment, further enhancing the airtightness of the equipment and effectively preventing external air from entering the air duct assembly 2 through the drainage pipe, ensuring the purity of the air and the drying effect during the drying process. Moreover, the design of the second drain pipe 10 is simple and clear, and its connection with the water receiving tray 7 and the trap assembly 9 is tight and reliable, reducing the potential risk of water leakage. During maintenance and cleaning, the second drain pipe 10 can be inspected and cleaned separately, improving the maintainability of the equipment. Due to the improvement of drainage efficiency and the enhancement of airtightness, the drying equipment can operate more efficiently, reducing unnecessary energy consumption. At the same time, by avoiding the mixing of external air, the energy consumption caused by reheating and dehumidification is reduced, which is conducive to achieving the goal of energy conservation and emission reduction.

[0032] Furthermore, the vertical height of the first end is lower than or equal to the wall height of the water receiving tray 7. Since the vertical height of the first end is lower than or equal to the wall height of the water receiving tray 7, the condensed water can flow naturally into the second drain pipe 10 without additional pumps or power devices, reducing energy consumption and maintenance costs. When the condensed water in the water receiving tray 7 reaches a certain height, due to the proper height setting of the first end, it can ensure that the water does not overflow from the water receiving tray 7, thus avoiding possible equipment damage or safety hazards. Since the condensed water can flow naturally into the second drain pipe 10, this design improves the drainage efficiency, reduces the time of water accumulation inside the equipment, and ensures the continuous and efficient operation of the drying equipment. This design is simple and intuitive, does not require a complex drainage system or control device, reduces the complexity and cost of the equipment. Through the design of natural drainage and preventing water overflow, this drainage structure enhances the reliability of the drying equipment and reduces the failure rate caused by drainage problems.

[0033] In some embodiments, a three-way valve 12 is further included. The three-way valve 12 includes a first valve port, a second valve port, and a third valve port. The first valve port is connected to the first drain pipe 8, the second valve port is connected to the second end, and the third valve port is connected to the trap assembly 9. The three valve ports of the three-way valve 12 are always in an open state. When the water level in the water receiving tray 7 is relatively low, the water is only conveyed to the trap assembly 9 through the first drain pipe 8 via the three-way valve 12. As the accumulated water in the water receiving tray 7 increases and the first drain pipe 8 alone cannot achieve rapid drainage, the second drain pipe 10 can be used to accelerate the drainage speed, quickly reduce the accumulated water in the water receiving tray 7 to below the safe level, and avoid water overflow from damaging the nearby electrical components.

[0034] Generally, the trap assembly 9 includes two trap pipes 901 and two connectors 902. The two trap pipes 901 are arranged side by side and are connected and communicated through the two connectors 902. The connector 902 is connected to the first drain pipe 8. The two trap pipes 901 are respectively connected to the first drain pipes 8 in the two sets of air duct assemblies 2, and the two trap assemblies 9 are mutually communicated through the connectors 902, thus forming a double water seal protection. This design further enhances the ability to prevent external air from flowing back reversely, improving the air tightness and drying effect of the drying device. The two trap pipes 901 are arranged side by side and are connected and communicated through the connectors 902. This design enables the condensed water to be discharged more quickly through the trap assembly 9, reducing the time for water to accumulate inside the device and improving the drainage efficiency. The design of the trap assembly 9 is simple and reliable. The combination of the two trap pipes 901 and the connectors 902 makes the drainage system more stable. Even if one trap pipe 901 has a problem, the other trap pipe 901 can still work normally, ensuring the continuous operation of the device. In addition, the design of the trap assembly 9 makes cleaning and maintenance more convenient. If it is necessary to clean the trap pipe 901 or the connector 902, they can be disassembled and cleaned separately without disassembling the entire drainage system.

[0035] Furthermore, the water trap 901 includes a horizontal portion 9011, a first U-shaped portion 9012, and a second U-shaped portion 9013. One end of the horizontal portion 9011 is connected to the connector 902, and the other end is connected to one end of the first U-shaped portion 9012. The other end of the first U-shaped portion 9012 is connected to the second U-shaped portion 9013, forming a U-shaped bend within the second U-shaped portion 9013. The combination of the first U-shaped portion 9012 and the second U-shaped portion 9013 creates a double water seal on the water trap 901, significantly enhancing its ability to prevent reverse inflow of external air, ensuring the purity of the air inside the drying device and improving the drying effect. The design of the horizontal portion 9011 allows condensed water to flow smoothly into the water trap 901, reducing the impact and noise of the water flow. Furthermore, the strategic layout of the first U-shaped portion 9012 and the second U-shaped portion 9013 ensures that condensed water can be discharged smoothly through the water trap 901, improving drainage efficiency. The overall structure of the water trap 901 is compact and stable, and can withstand certain water pressure and temperature changes, thereby ensuring the reliability and durability of the water trap 901 during long-term use.

[0036] It's worth noting that both ends of the first U-shaped portion 9012 face downward, while both ends of the second U-shaped portion 9013 face upward. In this solution, when condensed water flows from the connector 902 into the trap 901, it first enters the horizontal portion 9011 and then flows into the first U-shaped portion 9012. Because both ends of the first U-shaped portion 9012 face downward, the condensed water overcomes gravity and passes through the first U-shaped portion 9012 as it continues to flow. Subsequently, the condensed water continues to flow into the second U-shaped portion 9013. Because both ends of the second U-shaped portion 9013 face upward, the condensed water forms a major U-shaped bend as it flows in. This U-shaped bend also retains a certain amount of water at its base, forming a more reliable water seal. This water seal further enhances its ability to prevent reverse inflow of external air. Because the first U-shaped portion 9012 opens downward, meaning the U-shaped bend is located at the top, it prevents water in the second U-shaped portion 9013 from flowing back.

[0037] Meanwhile, a base is provided in the box body 1, and a support member 11 is provided on the base. The support member 11 is provided below the first U-shaped portion 9012. The support member 11 is mainly used to support and limit the first U-shaped portion 9012 to prevent the first U-shaped portion 9012 from being displaced or suspended for a long time, thereby preventing the structure from being unstable.

[0038] In some embodiments, a diversion slope is provided in the water receiving pan 7. Simply put, the diversion slope guides the condensed water toward the water level 701 of the water receiving pan 7. The diversion slope is lower on the side near the exhaust port 5 and higher on the side near the return air port 4. In this way, all condensed water that drips into the water receiving pan 7 flows along the diversion slope toward the water level 701 of the water receiving pan 7 and is discharged through the first drain pipe 8 and the second drain pipe 10.

[0039] On the other hand, a lithium battery material drying device is also provided, comprising the drainage structure as described in any one of the above items.

[0040] In the description herein, it should be understood that the terms "upper," "lower," "left," "right," and other positions or relationships are used solely for ease of description and simplified operation, and are not intended to indicate or imply that the devices or components referred to must have, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on this application. Furthermore, the terms "first" and "second" are used solely for descriptive purposes and have no special meaning.

[0041] Throughout this specification, references to terms such as "an embodiment" or "example" indicate that a specific feature, structure, material, or characteristic described in conjunction with that embodiment or example is included in at least one embodiment or example of the present application. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiment or example.

[0042] In addition, it should be understood that although this specification is described in terms of implementation methods, not every implementation method contains only one independent technical solution. This narrative method of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other implementation methods that can be understood by those skilled in the art.

[0043] The technical principles of the present application have been described above in conjunction with specific embodiments. These descriptions are intended solely to explain the principles of the present application and are not to be construed in any way as limiting the scope of protection of the present application. Based on the explanations herein, those skilled in the art will be able to devise other specific implementations of the present application without inventive effort, and such implementations will fall within the scope of protection of the present application.

Claims

1. A drainage structure, characterized in that, Comprising: A box body (1) with an installation space formed inside; Two sets of air duct components (2), which are installed in parallel up and down in the installation space. The air duct component (2) includes a fresh air pipe (201) and a return air pipe (202). The fresh air pipe (201) and the return air pipe (202) are arranged crosswise, and a sensible heat exchanger (3) is provided at the crosswise position. The two ends of the return air pipe (202) are respectively connected to a return air outlet (4) and an exhaust outlet (5). An evaporator (6) is provided between the exhaust outlet (5) and the sensible heat exchanger (3). A water receiving tray (7) is provided below the return air pipe (202), and a first drain pipe (8) is connected to the side of the water receiving tray (7); A water seal assembly (9), which is connected to the first drain pipe (8) through a pipeline. The water seal assembly (9) includes at least one U-shaped bend for storing water so that external air cannot pass through.

2. The drainage structure according to claim 1, wherein, It further includes a second drain pipe (10). The second drain pipe (10) includes a first end and a second end. The first end is arranged on the water receiving tray (7), and the second end is connected to the water seal assembly (9).

3. The drainage structure according to claim 2, wherein, The vertical height of the first end is lower than or equal to the wall height of the water receiving tray (7).

4. The drainage structure according to claim 3, characterized in that It further includes a three-way valve. The three-way valve includes a first valve port, a second valve port and a third valve port. The first valve port is connected to the first drain pipe (8), the second valve port is connected to the second end, and the third valve port is connected to the water seal assembly (9).

5. The drainage structure according to any one of claims 1 to 4, characterized in that, The water seal assembly (9) includes two water seal pipes (901) and two connectors (902). The two water seal pipes (901) are arranged side by side and are connected and communicated through the two connectors (902). The connector (902) is connected to the first drain pipe (8).

6. The drainage structure according to claim 5, characterized in that, The water seal pipe (901) includes a horizontal portion (9011), a first U-shaped portion (9012) and a second U-shaped portion (9013). One end of the horizontal portion (9011) is connected to the connector (902), and the other end is connected to one end of the first U-shaped portion (9012). The other end of the first U-shaped portion (9012) is connected to the second U-shaped portion (9013), and the U-shaped bend is formed inside the second U-shaped portion (9013).

7. The drainage structure according to claim 6, wherein, Both ends of the first U-shaped portion (9012) are arranged downward, and both ends of the second U-shaped portion (9013) are arranged upward.

8. The drainage structure according to claim 6, characterized in that, A base is provided inside the box body (1), and a support member (11) is provided on the base. The support member (11) is arranged below the first U-shaped portion (9012).

9. The drainage structure according to any one of claims 1 to 4, characterized in that, A diversion slope is provided inside the water receiving tray (7).

10. A lithium battery material drying device, characterized in that, It includes the drainage structure according to any one of claims 1-9.

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