Air duct sealing structure and lithium battery material drying device

Abstract

The utility model discloses an air duct sealing structure and a lithium battery material drying device, the sealing structure comprises a sensible heat exchanger, a fresh air pipe, an air return pipe and an exhaust pipe, and the sensible heat exchanger comprises a surface A, a surface B, a surface C and a surface D; one end of the fresh air pipe is connected with a fresh air opening, the other end of the fresh air pipe communicates with the A face, and the fresh air pipe extends to form a first folded edge. A partition plate is arranged in the air return pipe and divides the space in the air return pipe into an air return cavity and an air outlet cavity, the air return cavity is communicated with the B face and connected with an air return opening, the air outlet cavity is communicated with the C face and connected with an air outlet, and the air return pipe extends to form a second folded edge. One end of the exhaust pipe is connected with an exhaust outlet, the other end of the exhaust pipe is communicated with the D face, and the exhaust pipe extends to form a third folded edge. The first folding edge, the second folding edge and the third folding edge which are located on the same side are sequentially spliced to form a sealing cavity. The sealing performance of the air duct structure is effectively improved, and then the heat exchange efficiency of the drying device is improved.

Description

Technical Field

[0001] This application relates to the technical field of household appliances, and particularly to an air duct sealing structure and a lithium battery material drying device. Background Art

[0002] With the rapid development of the new energy vehicle industry, as the core component of new energy vehicles, the performance and quality of lithium batteries have a crucial impact on the performance of new energy vehicles. Therefore, the drying treatment of lithium battery materials has become an important link in improving the performance and quality of lithium batteries. As a result, the demand for lithium battery material dryers is increasing continuously. With the continuous progress and innovation of technology, the performance and quality of lithium battery material dryers are also constantly improving, providing strong support for the development of the lithium battery industry. However, the air duct structure of the current drying device has poor sealing performance, resulting in low heat exchange efficiency. Summary of the Utility Model

[0003] The purpose of the embodiments of this application is to provide an air duct sealing structure and a lithium battery material drying device, which can effectively improve the sealing performance of the air duct structure, and thus improve the heat exchange efficiency of the drying device.

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

[0005] On the one hand, an air duct sealing structure is provided, including: a sensible heat exchanger, a fresh air pipe, a return air pipe, and an exhaust air pipe. The sensible heat exchanger includes an A surface, a B surface, a C surface, and a D surface. The A surface is communicated with the C surface, and the B surface is communicated with the D surface; one end of the fresh air pipe is connected with a fresh air inlet, and the other end is communicated with the A surface. The top and bottom of the fresh air pipe respectively extend backward to form a first folded edge; a partition is provided inside the return air pipe. The partition divides the space inside the return air pipe into a return air cavity and an air outlet cavity. The return air cavity is communicated with the B surface and is connected with a return air inlet. The air outlet cavity is communicated with the C surface and is connected with an air outlet. The top and bottom of the return air pipe respectively extend backward to form a second folded edge; one end of the exhaust air pipe is connected with an exhaust air outlet, and the other end is communicated with the D surface. The top and bottom of the exhaust air pipe respectively extend backward to form a third folded edge; the first folded edge, the second folded edge, and the third folded edge on the same side are sequentially spliced to form a sealing cavity that abuts against and seals the top or bottom of the sensible heat exchanger.

[0006] Furthermore, a sealing rubber strip is pasted on the inner wall of the sealing cavity, and the sealing rubber strip abuts against and seals the sensible heat exchanger.

[0007] Furthermore, a return air valve is provided on the partition. When the return air valve is opened, the return air cavity and the air outlet cavity are communicated.

[0008] Furthermore, a condenser is provided in the air outlet cavity.

[0009] Further, an electric heater is provided at the air outlet, and the condenser is located between the electric heater and the sensible heat exchanger.

[0010] Further, an evaporator is provided in the exhaust duct.

[0011] Further, a filter is provided in the return air cavity.

[0012] Further, a fresh air valve is provided in the fresh air duct.

[0013] Further, a blower is provided at the air outlet, and / or an exhaust fan is provided at the exhaust outlet.

[0014] On the other hand, a lithium-ion battery material drying device is also provided, including two air duct sealing structures as described in any one of the above, and the two air duct sealing structures are arranged in parallel up and down.

[0015] The beneficial effects of the present application are as follows: Fresh air enters the fresh air duct through the fresh air inlet, and then conducts with surface A to provide fresh air for the drying process. The fresh air exchanges heat with the return air cavity conducting with surface B inside the sensible heat exchanger and absorbs heat. After heat exchange, the heated air enters the drying area through the air outlet cavity and surface C to dry the lithium-ion battery material. The waste gas generated during the drying process passes through the exhaust duct and is discharged through surface D to complete the entire drying cycle. Then, through the splicing of the first folding edge, the second folding edge, and the third folding edge, a sealing cavity capable of sealing and fitting the sensible heat exchanger is formed, effectively improving the airtightness of the air duct and reducing air leakage. The improvement of airtightness means a reduction in heat loss during the heat exchange process, thereby enhancing the heat exchange efficiency. Due to the improvement of the heat exchange efficiency, the drying process is more efficient, which helps to improve the drying quality and performance of the lithium-ion battery material. Improving the heat exchange efficiency helps to reduce energy consumption and achieve an energy-saving and environmentally friendly production process. Description of the Drawings

[0016] The following further describes the present application in detail with reference to the drawings and embodiments.

[0017] Figure 1 is a perspective view of the air duct sealing structure according to the embodiment of the present application;

[0018] Figure 2 is a perspective view of the return air duct according to the embodiment of the present application;

[0019] Figure 3 is a perspective view of the exhaust duct according to the embodiment of the present application;

[0020] Figure 4 is a perspective view of the fresh air duct according to the embodiment of the present application;

[0021] Figure 5This is a system schematic diagram of the lithium battery material drying device described in the embodiments of the present application.

[0022] In the figure: 1. Sensible heat exchanger; 2. Fresh air duct; 201. First hem; 3. Return air duct; 301. Return air cavity; 302. Air outlet cavity; 303. Second hem; 4. Exhaust duct; 401. Third hem; 5. Fresh air inlet; 6. Return air inlet; 7. Air outlet; 8. Exhaust outlet; 9. Partition; 10. Return air valve; 11. Condenser; 12. Electric heater; 13. Evaporator; 14. Fresh air valve; 15. Filter; 16. Blower; 17. Exhaust fan. Detailed implementation manners

[0023] To make the technical problems solved by the present application, the technical solutions adopted, and the achieved technical effects clearer, the technical solutions of the embodiments of the present application will be further described in detail below. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative efforts shall fall within the protection scope of the present application.

[0024] In the description of the present application, unless otherwise clearly defined and limited, the terms "connected", "connected", and "fixed" shall be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or integrated; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the internal communication 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 the present application can be understood according to specific situations.

[0025] In the present application, unless otherwise clearly defined 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 top" of 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 bottom" of 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.

[0026] Such as Figures 1 - 5As shown in the figure, this embodiment provides an air duct sealing structure, including: a sensible heat exchanger 1, a fresh air duct 2, a return air duct 3, and an exhaust duct 4. The sensible heat exchanger 1 includes an A surface, a B surface, a C surface, and a D surface. The A surface is in communication with the C surface, and the B surface is in communication with the D surface. One end of the fresh air duct 2 is connected to a fresh air inlet 5, and the other end is in communication with the A surface. The top and bottom of the fresh air duct 2 extend backward respectively to form a first folded edge 201. A partition 9 is arranged inside the return air duct 3. The partition 9 divides the space inside the return air duct 3 into a return air chamber 301 and an air outlet chamber 302. The return air chamber 301 is in communication with the B surface and is connected to a return air inlet 6. The air outlet chamber 302 is in communication with the C surface and is connected to an air outlet 7. The top and bottom of the return air duct 3 extend backward respectively to form a second folded edge 303. One end of the exhaust duct 4 is connected to an exhaust outlet 8, and the other end is in communication with the D surface. The top and bottom of the exhaust duct 4 extend backward respectively to form a third folded edge 401. The first folded edge 201, the second folded edge 303, and the third folded edge 401 on the same side are spliced in sequence to form a sealing cavity that abuts against and seals the top or bottom of the sensible heat exchanger 1.

[0027] Based on the above solution, fresh air enters the fresh air duct 2 through the fresh air inlet 5, and then is in communication with the A surface, providing fresh air for the drying process. The fresh air exchanges heat with the return air chamber 301 in communication with the B surface inside the sensible heat exchanger 1 and absorbs heat. After heat exchange, the heated air enters the drying area through the air outlet chamber 302 and the C surface to dry the lithium battery material. The waste gas generated during the drying process passes through the exhaust duct 4 and is discharged through the D surface to complete the entire drying cycle. Then, through the splicing of the first folded edge 201, the second folded edge 303, and the third folded edge 401, a sealing cavity that can be hermetically fitted to the sensible heat exchanger 1 is formed, effectively improving the airtightness of the air duct and reducing air leakage. The improvement of airtightness means a reduction in heat loss during the heat exchange process, thereby improving the heat exchange efficiency. Due to the improvement of heat exchange efficiency, the drying process is more efficient, which helps to improve the drying quality and performance of the lithium battery material. Improving heat exchange efficiency helps to reduce energy consumption and achieve an energy-saving and environmentally friendly production process. Through the above technical solution, the embodiment of the present application not only solves the problem of poor airtightness of the air duct in the prior art, but also provides strong support for improving the performance of the lithium battery material drying device by improving the heat exchange efficiency, thus promoting the development of the new energy vehicle industry.

[0028] Furthermore, a sealing strip is pasted on the inner wall of the sealing cavity, and the sealing strip is in abutting seal with the sensible heat exchanger 1. Pasting a sealing strip on the inner wall of the sealing cavity, these strips can be strip materials prefabricated into a specific shape or sealing glue applied on site. The sealing strip is usually made of materials with good elasticity and adhesion properties, such as rubber, silica gel or special sealing glue, to ensure the sealing effect. The sealing strip forms a continuous sealing layer between the inner wall of the sealing cavity and the sensible heat exchanger 1, further improving the airtightness of the air duct. The use of the sealing strip further enhances the sealing performance between the sealing cavity and the sensible heat exchanger 1, reducing the possibility of air leakage. Due to the improved sealing performance, the heat loss during the heat exchange process is further reduced, thereby enhancing the heat exchange efficiency. At the same time, the good sealing performance helps to reduce the wear and aging of the equipment and extend the service life of the equipment.

[0029] In addition, a return air valve 10 is provided on the partition plate 9, and when the return air valve 10 is opened, the return air cavity 301 and the air outlet cavity 302 are communicated. A return air valve 10 is provided on the partition plate 9 inside the return air duct 3. The return air valve 10 can control the air flow between the return air cavity 301 and the air outlet cavity 302. The return air valve 10 can be manually or automatically controlled according to the needs of the drying process to adjust the flow direction and flow rate of the air flow. When the return air valve 10 is opened, it communicates the return air cavity 301 and the air outlet cavity 302, allowing air to flow from one chamber to another. In the initial stage of drying or when additional heat exchange is not required, the return air valve 10 is closed, and the air only flows between the fresh air duct 2 and the sensible heat exchanger 1 to maintain the supply of fresh air in the drying area. When enhanced heat exchange or heat recovery is required, the return air valve 10 is opened, so that the air in the return air cavity 301 can flow into the air outlet cavity 302 and exchange heat with the sensible heat exchanger 1 to increase the temperature in the drying area. This solution can make more effective use of thermal energy, improve the heat exchange efficiency of the entire drying process. By intelligently controlling the return air valve 10, the utilization of thermal energy can be adjusted according to actual needs, reducing energy waste and achieving energy conservation and consumption reduction. At the same time, the return air valve 10 provides a means of flexibly controlling the drying process, which can be adjusted according to the specific drying requirements of the lithium battery material and environmental conditions.

[0030] In some embodiments, a condenser 11 is disposed in the air outlet cavity 302, an electric heater 12 is disposed at the air outlet 7, and the condenser 11 is located between the electric heater 12 and the sensible heat exchanger 1. Air first passes through the sensible heat exchanger 1 for preliminary heating and then enters the air outlet cavity 302. In the air outlet cavity 302, the air flows through the condenser 11, and water vapor is condensed into liquid water, thereby reducing the air humidity. The air processed by the condenser 11 continues to flow towards the electric heater 12, and the electric heater 12 further heats the air to increase the temperature. The air processed by condensation and heating enters the drying area through the air outlet 7 to dry the lithium battery material. The use of the condenser 11 can effectively reduce the air humidity, which is very important for the drying process of the lithium battery material because low humidity can accelerate the drying speed of the material. By heating the air with the electric heater 12, the temperature of the drying area can be increased, thereby improving the drying efficiency. The combined use of the condenser 11 and the electric heater 12 can precisely control the temperature and humidity of the drying area, which is crucial for ensuring the drying quality of the lithium battery material.

[0031] Preferably, an evaporator 13 is disposed in the exhaust air duct 4, a filter 15 is disposed in the return air cavity 301, and a fresh air valve 14 is disposed in the fresh air duct 2. The evaporator 13 in the exhaust air duct 4 cools the air before it is discharged, increasing the dehumidification effect and helping to maintain a low humidity environment in the drying area. The filter 15 in the return air cavity 301 filters the air before it enters the sensible heat exchanger 1 to ensure that the heat exchanger is not affected by dust and impurities, extending its service life and improving the heat exchange efficiency. The fresh air valve 14 in the fresh air duct 2 can adjust the intake amount of fresh air according to the actual needs of the drying process to achieve precise control of the drying environment. By performing heat exchange on the filtered clean air, the heat exchange efficiency of the sensible heat exchanger 1 can be improved, reducing the maintenance cost. At the same time, the combined use of the evaporator 13, the filter 15, and the fresh air valve 14 enhances the adaptability of the drying system, enabling it to adapt to different drying conditions and requirements.

[0032] It is worth mentioning that a blower 16 is disposed at the air outlet 7, and / or an exhaust fan 17 is disposed at the exhaust outlet 8. The blower 16 disposed at the air outlet 7 is used for forced air supply, increasing the air flow rate and volume in the drying area. The exhaust fan 17 disposed at the exhaust outlet 8 is used for forced exhaust, accelerating the exhaust speed of the waste gas and maintaining a negative pressure state in the drying area. The blower 16 and the exhaust fan 17 can work together according to the actual needs of the drying process to achieve precise control of the air flow in the drying area.

[0033] On the other hand, a lithium battery material drying device is also provided, including two of the air duct sealing structures as described in any one of the above, and the two air duct sealing structures are arranged in parallel up and down.

[0034] In the description of this article, it should be understood that the orientation or positional relationships such as "upper", "lower", "left", "right", etc. are only for the convenience of description and simplifying operations, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation on this application. In addition, the terms "first" and "second" are only used for distinction in description and have no special meaning.

[0035] In the description of this specification, the description referring to terms such as "one embodiment", "example", etc. means that the specific features, structures, materials or characteristics described in connection with that embodiment or example are included in at least one embodiment or example of this application. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example.

[0036] In addition, it should be understood that although this specification is described according to embodiments, not every embodiment only contains an independent technical solution. This narrative way of the specification is only for clarity. Those skilled in the art should regard the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

[0037] The technical principles of this application have been described above in combination with specific embodiments. These descriptions are only for explaining the principles of this application and should not be construed as a limitation on the protection scope of this application in any way. Based on the explanations here, those skilled in the art can think of other specific implementation manners of this application without creative efforts, and these manners will fall within the protection scope of this application.

Claims

1. An air duct sealing structure, characterized in that: include: A sensible heat exchanger (1), comprising an A surface, a B surface, a C surface and a D surface, wherein the A surface is in electrical communication with the C surface, and the B surface is in electrical communication with the D surface; A fresh air duct (2), one end of which is connected to a fresh air outlet (5), and the other end of which is in communication with the A surface, the top and bottom of the fresh air duct (2) respectively extending in opposite directions to form a first folded edge (201); The return air duct (3) is provided with a partition (9) inside, the partition (9) divides the space inside the return air duct (3) into a return air chamber (301) and an air outlet chamber (302), the return air chamber (301) is communicated with the B surface and is connected to the return air port (6), the air outlet chamber (302) is communicated with the C surface and is connected to the air outlet (7), and the top and bottom of the return air duct (3) respectively extend in opposite directions to form a second folded edge (303); An exhaust pipe (4), one end of which is connected to an exhaust port (8), and the other end of which is in communication with the D surface, and the top and bottom of the exhaust pipe (4) are respectively extended in reverse to form a third folded edge (401); The first folded edge (201), the second folded edge (303) and the third folded edge (401) located on the same side are spliced ​​in sequence to form a sealed cavity that abuts against and seals the top or bottom of the sensible heat exchanger (1).

2. The air duct sealing structure according to claim 1, characterized in that: A sealing strip is adhered to the inner wall of the sealing cavity, and the sealing strip abuts against the sensible heat exchanger (1) for sealing.

3. The air duct sealing structure according to claim 1, characterized in that: The partition plate (9) is provided with an air return valve (10), and when the air return valve (10) is opened, the air return chamber (301) and the air outlet chamber (302) are connected.

4. The air duct sealing structure according to claim 1, characterized in that: A condenser (11) is arranged in the air outlet cavity (302).

5. The air duct sealing structure according to claim 4, characterized in that: An electric heater (12) is provided at the air outlet (7), and the condenser (11) is located between the electric heater (12) and the sensible heat exchanger (1).

6. The air duct sealing structure according to claim 1, characterized in that: An evaporator (13) is arranged in the exhaust pipe (4).

7. The air duct sealing structure according to any one of claims 1 to 6, characterized in that: A filter (15) is arranged in the return air chamber (301).

8. The air duct sealing structure according to any one of claims 1 to 6, characterized in that: A fresh air valve (14) is arranged in the fresh air pipe (2).

9. The air duct sealing structure according to any one of claims 1 to 6, characterized in that: The air outlet (7) is provided with an air supply fan (16), and / or the air outlet (8) is provided with an exhaust fan (17).

10. A lithium battery material drying device, characterized in that: It comprises two air duct sealing structures as described in any one of claims 1 to 9, and the two air duct sealing structures are arranged in parallel up and down.

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