Air nozzle, drying oven and coating equipment

Abstract

The utility model provides an air nozzle, a drying oven and coating equipment, and relates to the technical field of battery production equipment. The tuyere body comprises a first side wall and a second side wall which are opposite to each other, an air inlet is formed in the first side wall, an air outlet is formed in the second side wall, an air cavity is formed between the first side wall and the second side wall, and the air inlet, the air cavity and the air outlet are sequentially communicated; the humidifying assembly is at least partially located in the air cavity and used for spraying water mist into the air cavity. The air nozzle is provided with the humidifying assembly, the humidifying assembly can spray mist during coating, the sprayed water mist can enter the drying oven through the air outlet, the humidity in the drying oven during coating reaches the ideal coating humidity, the internal humidity difference during shutdown and coating switching of the drying oven is reduced, and the coating quality is improved. Therefore, the possibility of cracking of the pole piece due to humidity change after the temperature of the drying oven is increased is reduced, the yield of the coated pole piece is improved, and the production quality and the use performance of the battery monomer are also improved.

Description

Technical Field

[0001] The present application relates to the technical field of battery production equipment, and in particular to a tuyere, an oven and a coating equipment. Background Art

[0002] Batteries have a wide range of uses, for example, they can be used in mobile phones, laptops, electric vehicles, electric cars, electric airplanes, electric ships, electric toy cars, electric toy ships, electric toy airplanes and electric tools, etc.

[0003] The coating process plays an important role in battery production, which can affect the performance and life of the battery. The coating process is a method of coating the active material on the surface of the pole piece using a coating device. However, the pole pieces in the existing production line are prone to cracking during coating, which affects the production quality and performance of the battery monomer. Utility Model Content

[0004] The present application provides a tuyere, an oven and a coating device, which can improve the accuracy of air tightness detection of battery cells.

[0005] In the first aspect, the present application provides a nozzle, comprising: a nozzle body, comprising a first side wall and a second side wall arranged opposite to each other, the first side wall being provided with an air inlet, the second side wall being provided with an air outlet, a wind cavity being provided between the first side wall and the second side wall, the air inlet, the wind cavity and the air outlet being connected in sequence; a humidifying component, at least partially located in the wind cavity, and used to spray water mist into the wind cavity. With the above technical solution, a humidifying component is arranged on the nozzle, the humidifying component can spray during coating, and the sprayed water mist can enter the oven through the air outlet, so that the humidity in the oven reaches the ideal coating humidity during coating, and the humidity difference inside the oven is reduced when the oven is shut down and switched to coating, thereby reducing the possibility of cracking of the pole piece due to humidity changes after the oven is heated up, improving the yield rate of the pole piece after coating, and also improving the production quality and use performance of the battery cell.

[0006] In some embodiments, the humidification component includes a water delivery component and at least one spray component; the water delivery component is used to connect to an external water supply device, and the spray component is connected to the water delivery component and is used to spray water mist into the air cavity. By adopting the above technical solution, the external water supply device is connected through the water delivery component, and the water delivered by the water delivery component is atomized and sprayed out by the spray component, and the structure of supplying water to the spray component can be omitted accordingly, simplifying the structure of the air nozzle.

[0007] In some embodiments, the water delivery member includes a water pipe, at least part of which is located in the wind cavity, and the water pipe is provided with a water inlet for connecting to an external water supply device. With the above technical solution, the water pipe has a simple structure, and is conveniently connected to an external water supply device through the water inlet of the water pipe, and the water pipe can be directly extended into the wind cavity to supply water to the spray member.

[0008] In some embodiments, the water inlet is located outside the wind cavity. By adopting the above technical solution, the water inlet is arranged outside the wind cavity, which facilitates the connection between the water inlet and the external water supply equipment.

[0009] In some embodiments, the water pipe is provided with a water outlet, and the spray element is installed on the water pipe and communicated with the water outlet. By adopting the above technical solution, a water outlet is provided on the water pipe, and the connection and water supply of the spray element are completed by using the water outlet, which has a simple structure and is easy to implement.

[0010] In some embodiments, the water pipe is provided with a plurality of water outlet holes, the number of the spray elements is multiple, the plurality of water outlet holes are arranged at intervals along the first direction of the water pipe, and each of the water outlet holes is connected to at least one of the spray elements; wherein the first direction is parallel to the extension direction of the air outlet and intersects with the arrangement direction from the air inlet to the air outlet. By adopting the above technical solution, the number of water outlet holes on the water pipe is designed to be multiple, and the plurality of water outlet holes are arranged along the extension direction parallel to the air outlet, so that the water mist of the spray element can be evenly distributed into the air cavity along the first direction, and then sent out into the oven through the air outlet, thereby improving the uniformity of humidification in the oven.

[0011] In some embodiments, along the first direction, the water outlet holes have multiple rows, and each row includes multiple water outlet holes arranged at intervals along the circumferential direction of the water pipe. By adopting the above technical solution, the water outlet holes are designed to be multiple rows, and each row has multiple circumferentially arranged water outlet holes, so that the spraying range of the spray member connected to the water outlet holes can cover the peripheral area of ​​the water pipe, thereby improving the spraying efficiency and uniformity of the humidification component in the wind cavity.

[0012] In some embodiments, the air nozzle further comprises at least one baffle, which is connected to the air nozzle body and blocks part of the air outlet. By adopting the above technical solution, the air outlet is blocked by the baffle, so that the air volume and air outlet direction of the air outlet can be adjusted, and the air outlet can achieve differential heating of the thinning area and other areas of the electrode.

[0013] In some embodiments, the baffle is connected to the nozzle body in a manner of moving on the nozzle body, and the moving direction of the baffle is set along the extension direction of the air outlet. With the above technical solution, the baffle is designed to be adjustable in the first direction, which makes it easier to adjust the baffle to an ideal position to block a large amount of hot air from the air outlet from entering the thinning area of ​​the pole piece, and differentially heat the thinning area of ​​the pole piece and other areas to reduce the risk of cracking in the thinning area of ​​the pole piece.

[0014] In some embodiments, the nozzle body is provided with a slot adjacent to the air outlet, and the extension direction of the slot is arranged parallel to the extension direction of the air outlet; one end of the baffle is inserted into the slot and moves on the slot. The above technical solution is adopted to realize the assembly and movement of the baffle by using the slot adjacent to the air outlet, which has a simple structure and is easy to process.

[0015] In some embodiments, the nozzle body is provided with slots on both sides of the second direction, and the air outlet is located between the slots on both sides; one end of the two opposite ends of the baffle is connected to the slot on one side, and the other end is connected to the slot on the other side; wherein the second direction intersects with the extension direction of the air outlet and with the arrangement direction from the air outlet to the air inlet. By adopting the above technical solution, both ends of the baffle are connected to the slots, which can improve the stability of the baffle after being installed in the slot and the stability of the baffle during movement.

[0016] In some embodiments, the nozzle body is provided with the air outlets on both sides of the second direction. By adopting the above technical solution, air outlets are provided on both sides to form a two-side air outlet structure, which can improve the air outlet efficiency to a certain extent compared with the one-side air outlet form.

[0017] In a second aspect, an embodiment of the present application provides an oven, comprising a housing and an air nozzle as described in any one of the above technical solutions, wherein the air nozzle is installed in the housing.

[0018] In a third aspect, an embodiment of the present application provides a coating device, comprising an oven as described in the above technical solution. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments of the present application will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on the drawings without paying creative work.

[0020] Figure 1 Schematically showing a structural schematic diagram of a tuyere provided in some embodiments of the present application at a first viewing angle;

[0021] Figure 2 Schematically showing a structural schematic diagram of a tuyere provided in some embodiments of the present application at a second viewing angle;

[0022] Figure 3 for Figure 2 AA cross-section diagram;

[0023] Figure 4 Schematically shows a partial structural diagram of a tuyere provided in some embodiments of the present application;

[0024] Figure 5 The structural diagram of the oven provided in some embodiments of the present application is schematically shown.

[0025] The reference numerals of the specific embodiments are as follows:

[0026] 100. Wind nozzle;

[0027] 10. nozzle body; 11. first side wall; 111. air inlet; 12. second side wall; 121. air outlet; 13. third side wall; 14. fourth side wall; 15. air cavity; 16. slot; 17. sealing wall;

[0028] 20. Humidification component; 21. Water delivery component; 211. Water pipe; 2111. Water inlet; 2112. Water outlet; 22. Spray component;

[0029] 30. baffle; 31. bending portion;

[0030] 200, oven; 210, conveying mechanism;

[0031] 300, pole piece;

[0032] X, first direction; Y, second direction; Z, extension direction of the air outlet; DETAILED DESCRIPTION

[0033] In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the technical solution in the embodiments of the present application will be clearly described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0034] Unless otherwise defined, all technical and scientific terms used in this application have the same meanings as those commonly understood by technicians in the technical field of this application; the terms used in the specification of this application are only for the purpose of describing specific embodiments and are not intended to limit this application; the terms "including" and "having" in the specification and claims of this application and the above-mentioned drawings and any variations thereof are intended to cover non-exclusive inclusions. The terms "first", "second", etc. in the specification and claims of this application or the above-mentioned drawings are used to distinguish different objects, rather than to describe a specific order or a primary and secondary relationship.

[0035] Reference to "embodiment" in this application means that a particular feature, structure, or characteristic described in conjunction with the embodiment may be included in at least one embodiment of the present application. The appearance of the phrase in various places in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments.

[0036] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", and "attached" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0037] The term "and / or" in this application is only a description of the association relationship of associated objects, indicating that there can be three relationships. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / " in this application generally indicates that the associated objects before and after are in an "or" relationship.

[0038] In the embodiments of the present application, the same reference numerals represent the same components, and for the sake of brevity, detailed descriptions of the same components are omitted in different embodiments. It should be understood that the thickness, length, width and other dimensions of various components in the embodiments of the present application shown in the drawings, as well as the overall thickness, length, width and other dimensions of the integrated device are only exemplary descriptions and should not constitute any limitation to the present application.

[0039] The term "plurality" used in the present application refers to two or more (including two).

[0040] During the production of the battery pole piece, a coating process is required. The coating process coats the active material layer on the current collector of the pole piece to form a coating area on one side of the current collector. During the coating process, the air nozzle in the oven plays an important role. The air nozzle can improve the temperature uniformity, remove solvents, promote curing and improve production efficiency. Correct design and operation of the air nozzle system is crucial to ensure the quality of electrode materials and production efficiency.

[0041] However, the electrode sheets in existing production lines are prone to cracking during or after coating, which affects the production quality and performance of battery cells. One of the reasons for the cracking is that the humidity inside the oven when it is stopped is higher than the humidity inside during the coating operation. This humidity difference causes uneven expansion or contraction of the electrode material. Some electrode materials are more affected by humidity, while other parts are less affected by humidity, resulting in stress differences. These differences may lead to stress accumulation inside the electrode material, and ultimately lead to cracking.

[0042] Therefore, how to reduce or even eliminate the humidity difference between the oven when it is shut down and during coating operation is an issue that always needs to be paid attention to in the research and development of coating equipment and its related components.

[0043] In view of this, the present application provides a wind nozzle, which is additionally provided with a humidifying component. When the humidity in the oven is reduced, the spray can be sprayed into the wind cavity inside the wind nozzle through the spray component, and then the air inlet at the air inlet of the wind nozzle carries the spray into the oven of the coating equipment, thereby increasing the humidity inside the oven, so that the humidity in the oven reaches the ideal coating humidity during coating, reducing the possibility of cracking of the electrode due to the change in humidity after the oven is heated up, improving the yield rate of the electrode after coating, and thereby improving the production quality and performance of the battery cell.

[0044] It should be noted that in the embodiments of the present application, a battery refers to a single physical module including one or more battery cells to provide a higher voltage and capacity. The battery is used for an electrical device, which may be a vehicle, a mobile phone, a portable device, a laptop computer, a ship, a spacecraft, an electric toy, and an electric tool, etc. The vehicle may be a fuel vehicle, a gas vehicle, or a new energy vehicle, and the new energy vehicle may be a pure electric vehicle, a hybrid vehicle, or an extended-range vehicle, etc.; the spacecraft includes an airplane, a rocket, a space shuttle, and a spacecraft, etc.; the electric toy includes a fixed or mobile electric toy, such as a game console, an electric car toy, an electric ship toy, and an electric airplane toy, etc.; the electric tool includes a metal cutting electric tool, a grinding electric tool, an assembly electric tool, and an electric tool for railways, such as an electric drill, an electric grinder, an electric wrench, an electric screwdriver, an electric hammer, an impact drill, a concrete vibrator, and an electric planer, etc. The embodiments of the present application do not impose any special restrictions on the above-mentioned electrical devices. When the electrical device is a vehicle, the battery can be used not only as the operating power source of the vehicle, but also as the driving power source of the vehicle, replacing or partially replacing fuel or natural gas to provide driving power for the vehicle.

[0045] In a battery, there can be multiple battery cells, and multiple battery cells can be connected in series, in parallel, or in a mixed connection. A mixed connection means that multiple battery cells are connected in series and in parallel. Multiple battery cells can be directly connected in series, in parallel, or in a mixed connection, and then the whole formed by multiple battery cells is accommodated in a box; of course, the battery can also be a battery module formed by multiple battery cells being connected in series, in parallel, or in a mixed connection, and then multiple battery modules are connected in series, in parallel, or in a mixed connection to form a whole, and accommodated in a box. Among them, each battery cell can be a secondary battery or a primary battery; it can also be a lithium-sulfur battery, a sodium-ion battery, or a magnesium-ion battery, but it is not limited to this. The battery cell can be cylindrical, flat, rectangular, or in other shapes.

[0046] A battery cell includes an electrode assembly and an electrolyte. The electrode assembly includes a positive electrode sheet, a negative electrode sheet and a separator. A battery cell mainly relies on the movement of metal ions between the positive electrode sheet and the negative electrode sheet to work. The positive electrode sheet includes a positive current collector and a positive active material layer. The positive active material layer is coated on the surface of the positive current collector. The positive current collector includes a positive coating area and a positive electrode ear connected to the positive coating area. The positive coating area is coated with a positive active material layer, and the positive electrode ear is not coated with a positive active material layer. Taking a lithium-ion battery cell as an example, the material of the positive current collector can be aluminum, and the positive active material layer includes a positive active material. The positive active material can be lithium cobalt oxide, lithium iron phosphate, ternary lithium or lithium manganese oxide, etc. The negative electrode sheet includes a negative electrode current collector and a negative electrode active material layer, and the negative electrode active material layer is coated on the surface of the negative electrode current collector; the negative electrode current collector includes a negative electrode coating area and a negative electrode tab connected to the negative electrode coating area, and the negative electrode coating area is coated with a negative electrode active material layer, and the negative electrode tab is not coated with a negative electrode active material layer. The material of the negative electrode current collector can be copper, and the negative electrode active material layer includes a negative electrode active material, and the negative electrode active material can be carbon or silicon, etc. The material of the separator can be PP (polypropylene, polypropylene) or PE (polyethylene, polyethylene), etc.

[0047] The following is combined with Figure 1-4 The structure of the air nozzle of the embodiment of the present application is introduced.

[0048] Figure 1 The schematic diagram shows the structure of the air nozzle provided in some embodiments of the present application from a first viewing angle. Figure 2 The schematic diagram shows the structure of the air nozzle provided in some embodiments of the present application at a second viewing angle. Figure 3 for Figure 2 AA cross-section diagram.

[0049] Combined with Figure 1 -Attached Figure 3 As shown in the figure, an embodiment of the present application provides a nozzle 100, which includes a nozzle body 10 and a humidifying component 20. The nozzle body 10 includes a first side wall 11 and a second side wall 12 arranged opposite to each other, the first side wall is provided with an air inlet 111, the second side wall 12 is provided with an air outlet 121, and an air cavity 15 is provided between the first side wall 11 and the second side wall 12, and the air inlet 111, the air cavity 15 and the air outlet 121 are connected in sequence; the humidifying component 20 is at least partially located in the wind cavity 15, and is used to spray water mist into the wind cavity 15.

[0050] Among them, the shape of the nozzle body 10 of this embodiment can be a rectangular block or a long strip as shown in the above figure. This kind of nozzle 100 can be called a rectangular nozzle 100. The structural form of the nozzle 100 can also be circular or ring-shaped, which are not listed one by one in this embodiment.

[0051] Furthermore, if Figure 3 As shown in the figure, the nozzle body 10 of the present embodiment has a first side wall 11, a second side wall 12, a third side wall 13 and a fourth side wall 14, the first side wall 11 and the second side wall 12 are arranged opposite to each other, the third side wall 13 and the fourth side wall 14 are arranged opposite to each other, the third side wall 13 and the fourth side wall 14 are connected between the first side wall 11 and the second side wall 12, and the nozzle body 10 of the present embodiment also has sealing walls 17 at the open ends of the closed wind cavity 15 along the first direction X.

[0052] In this embodiment, the first side wall 11, the second side wall 12, the third side wall 13 and the fourth side wall 14 form an air cavity 15, and the air cavity 15 is located between the air inlet 111 and the air outlet 121. The air outlet of the air nozzle 100 (not shown in the figure) for generating hot air enters the air inlet 111 and the air cavity 15 in turn, and then flows out through the air outlet 121 to control the spray direction and uniformity of the coating fluid in the oven 200.

[0053] The humidification component 20 of this embodiment is used to spray water mist into the wind cavity 15, so that the air flow flowing out of the wind cavity 15 through the air outlet 121 carries a certain amount of water mist to humidify the oven 200. By controlling the spray amount, spray time and spray rate of the humidification component 20, and coordinating with the temperature control of the air outlet of the nozzle 100, the oven 200 can be maintained at an ideal coating humidity and temperature, thereby reducing the possibility of cracking of the electrode 300 due to humidity changes after the oven 200 is heated up, improving the yield rate of the electrode 300 after coating, and thereby improving the production quality and performance of the battery cell.

[0054] The humidifying assembly 20 of this embodiment may be partially located in the air cavity 15 or entirely located in the air cavity 15, for example. Figure 3 As shown in the figure (the arrow in the figure is a schematic diagram of the air inlet direction), the humidification component 20 is located at a position of the wind cavity 15 adjacent to the air inlet 111, and is located in the middle area of ​​this position. Since the air flow velocity is fastest at the air inlet 111, most of the water mist generated at this position can be entrained to the air outlet 121, reducing the possibility of water mist being deposited in the wind cavity 15.

[0055] Figure 4 The schematic diagram shows a partial structure diagram of the air nozzle provided in some embodiments of the present application. The sealing wall 17 is omitted in the figure to facilitate observation of the internal structure of the air nozzle body 10 of the present embodiment. In addition, the spray element 22 is omitted in the figure to facilitate observation of the water outlet hole 2112 of the present embodiment.

[0056] Combined with Figure 3 and attached Figure 4As shown in the figure, in some examples, optionally, the humidification component 20 of this embodiment includes a water delivery component 21 and at least one spray component 22; the water delivery component 21 is used to connect to an external water supply device (not shown in the figure), and the spray component 22 is connected to the water delivery component 21 and is used to spray water mist into the wind cavity 15.

[0057] The water delivery component 21 of this embodiment may be a water pipeline or a water tank for storing water, the external water supply equipment may be a water supply pipeline in a coating plant, and the spray component 22 may be an atomizing nozzle.

[0058] During humidification, the water delivery member 21 is connected to an external water supply device, and the water delivered by the water delivery member 21 is atomized and sprayed out by the spray member 22. Accordingly, the structure for supplying water to the spray member 22 can be omitted, simplifying the structure of the air nozzle 100.

[0059] Of course, the structural form of the humidification component 20 of this embodiment is not limited to this. For example, the humidification component 20 can also be a small spray pump, a spray fan, an ultrasonic atomizer and other structures, which will not be introduced one by one in this embodiment.

[0060] In some examples, optionally, the water delivery member 21 of this embodiment includes a water pipe 211, at least a portion of the water pipe 211 is located in the wind cavity 15, and the water pipe 211 is provided with a water inlet 2111 for connecting to an external water supply device.

[0061] The water pipe 211 of this embodiment is a structure with one end or both ends open. When the water pipe 211 is a structure with one end open, the opening is the above-mentioned water inlet 2111. When the water pipe 211 is a structure with both ends open, one end opening is the above-mentioned water inlet 2111, and a spray component 22 can be installed at the other end.

[0062] Using water pipe 211 as part of the water delivery component 21 not only has a simple structure, but is also convenient for connection to an external water supply device through the water inlet 2111 of the water pipe 211. Moreover, since the water pipe 211 has a certain structural length, it can be directly extended into the wind cavity 15 to supply water to the spray component 22.

[0063] The water inlet 2111 of this embodiment can be connected to an external water supply device through a pipe and a water control valve (not shown in the figure) to achieve controllable water intake of the humidification component 20. At the same time, the spray component 22 can also be designed as an atomizing nozzle structure that can control the spray flow rate to achieve controllable spray volume of the humidification component 20.

[0064] In some examples, optionally, the water inlet 2111 of this embodiment is located outside the wind cavity 15 .

[0065] When the water inlet 2111 of this embodiment is located outside the wind cavity 15, it can be understood that one end of the above-mentioned water pipe 211 extends out of the wind nozzle body 10 of this embodiment, so that this end can be easily connected and installed with the aforementioned pipe fittings and water control valves and other structures.

[0066] In some examples, optionally, the water pipe 211 is provided with a water outlet 2112 , and the spray element 22 is installed on the water pipe 211 and communicated with the water outlet 2112 .

[0067] The water outlet 2112 of this embodiment is provided on the side wall of the water pipe 211 and is a through-hole structure. The water in the water pipe 211 can enter the spray element 22 through the water outlet 2112 of this embodiment, and the water is atomized and sprayed out through the spray element 22.

[0068] This embodiment utilizes the water outlet hole 2112 to complete the connection and water supply to the spray element 22, has a simple structure, is easy to manufacture, and has a low manufacturing cost.

[0069] Combined with the attachment again Figure 4 As shown in , in some examples, optionally, the water pipe 211 of this embodiment is provided with a plurality of water outlet holes 2112, the number of the spray elements 22 is multiple, the plurality of water outlet holes 2112 are arranged at intervals in the first direction X of the water pipe 211, and each water outlet hole 2112 is connected to at least one spray element 22; wherein the first direction X is parallel to the extension direction of the air outlet 121, and intersects with the arrangement direction from the air inlet 111 to the air outlet 121.

[0070] In this embodiment, the number of spray elements 22 may be equal to the number of water outlet holes 2112, and multiple spray elements 22 are connected one by one to multiple water outlet holes 2112. Alternatively, the number of spray elements 22 is a multiple of the water outlet holes 2112, and each water outlet hole 2112 may be connected to two or more spray elements 22, and the connection method may be through a pipeline connection to achieve a larger spray volume.

[0071] The plurality of water outlet holes 2112 of the above structure are arranged along the extending direction parallel to the air outlet 121, so that the water mist of the spray member 22 can be evenly distributed into the air cavity 15 along the first direction X, and then sent into the oven 200 through the air outlet 121, thereby improving the uniformity of humidification in the oven 200. In this embodiment, there are a plurality of water outlet holes 2112, for example, evenly spaced and arranged along the first direction X shown in the figure, so that the spray amount of the water pipe 211 along the first direction X can be relatively uniform.

[0072] Furthermore, the plurality of water outlet holes 2112 may be evenly spaced and arranged along the first direction X, that is, the distance between two adjacent water outlet holes 2112 is constant, so as to improve the uniformity of the spray amount in each area of ​​the humidifying component 20 in the first direction X.

[0073] In some examples, optionally, along the first direction X, the water outlet holes 2112 have multiple rows, and each row includes a plurality of water outlet holes 2112 arranged at intervals along the circumferential direction of the water pipe 211 .

[0074] It should be pointed out that the "row" mentioned in this embodiment should be understood in a broad sense. Each water outlet hole 2112 can refer to a plurality of water outlet holes 2112 arranged at intervals in a straight line direction, or a plurality of water outlet holes 2112 can be arranged at intervals in a circumferential direction of the water pipe 211 as shown in the figure.

[0075] Based on the above-mentioned plurality of water outlet holes 2112 along the first direction X, this embodiment adds at least one water outlet hole 2112 on the peripheral side of each water outlet hole 2112, so that the spraying range of the spray member 22 connected to the water outlet hole 2112 can cover the peripheral area of ​​the water pipe 211, thereby improving the spraying efficiency and uniformity of the humidification component 20 in the wind cavity 15.

[0076] Combined with the attachment again Figure 1-4 As shown in , in some examples, optionally, the air nozzle 100 of this embodiment further includes at least one baffle 30 , which is connected to the air nozzle body 10 and blocks part of the air outlet 121 .

[0077] The number of baffles 30 in this embodiment can be multiple as shown in the figure, and multiple baffles 30 are arranged at intervals along the first direction X. In addition, the baffles 30 can be installed on the nozzle body 10 in a detachable manner to facilitate disassembly and position adjustment. The baffles 30 can block part of the air outlet 121, thereby changing the air output of the nozzle 100. At the same time, since the baffles 30 can produce a turbulent effect, the air outlet direction of the air outlet 121 can also be changed. For example, the air outlet direction of this embodiment is adjusted to a small amount entering the thinning area of ​​the pole piece 300, and a large amount entering other areas of the pole piece 300, thereby reducing the risk of cracking in the thinning area that is prone to cracking.

[0078] In some examples, optionally, the baffle 30 is connected to the nozzle body 10 in a manner of moving on the nozzle body 10 , and the moving direction of the baffle 30 is set along the extension direction Z of the air outlet 121 .

[0079] There are various structural forms in which the baffle 30 can move along the extension direction Z of the air outlet 121 on the air nozzle body 10, for example, the baffle 30 and the air nozzle body 10 are slidably connected, or a plurality of gear slots are provided on the air nozzle body 10 (this embodiment is not shown in the figure), and the gear slots are arranged along the air nozzle body 10 in the first direction X, and the baffle 30 can be selectively inserted into one of the slots 16 to adjust the position of the baffle 30.

[0080] The baffle 30 is designed to be adjustable in the extension direction Z of the air outlet 121, so that the baffle 30 can be easily adjusted to an ideal position to block the hot air from the air outlet 121 from entering the thinning area of ​​the pole piece 300 as much as possible, and differentially heat the thinning area of ​​the pole piece 300 and other areas, further reducing the risk of cracking in the thinning area.

[0081] In addition, a scale (not shown in the figure) may be provided on the nozzle body 10 of the present embodiment, and the position adjustment range of the baffle 30 may be controlled by visualizing the scale, thereby ensuring the accuracy of the position adjustment of the baffle 30.

[0082] In some examples, optionally, the nozzle body 10 of this embodiment is provided with a slot 16 adjacent to the air outlet 121 , and the extension direction of the slot 16 is set parallel to the extension direction Z of the air outlet 121 ; one end of the baffle 30 is inserted into the slot 16 and moves on the slot 16 .

[0083] The length direction of the slot 16 of this embodiment extends along an extension direction Z parallel to the air outlet 121. For example, in the extension direction of the slot 16, the length of the slot 16 is approximately equal to the length of the air nozzle 100, so that multiple baffles 30 can be directly installed on one slot 16.

[0084] There is friction between the slot 16 of this embodiment and the baffle 30 of this embodiment. When the baffle 30 is inserted into the slot 16, the two use friction to fix the position of the baffle 30. When the position of the baffle 30 needs to be adjusted, the friction is overcome to drive the baffle 30 to slide in the slot 16 to adjust the baffle 30. The slot 16 of this embodiment may have an opening at one or both ends in the first direction X, and the opening of the slot 16 can facilitate the installation of the baffle 30.

[0085] As described above, this embodiment utilizes the slot 16 adjacent to the air outlet 121 to realize the assembly of the baffle 30 and the mobility of the baffle 30 , and has a simple structure and is easy to process.

[0086] In some examples, optionally, the nozzle body 10 is provided with slots 16 on opposite sides along the second direction Y, and the air outlet 121 is located between the slots 16 on both sides; one end of the opposite ends of the baffle 30 is connected to the slot 16 on one side, and the other end is connected to the slot 16 on the other side; the second direction Y intersects with the first direction X, and intersects with the arrangement direction from the air inlet 111 to the air outlet 121.

[0087] Specifically, the second direction Y can be understood as the width direction of the nozzle 100 of this embodiment, the first direction X can be understood as the length direction of the water pipe 211 of this embodiment, the first direction X is parallel to the extension direction Z of the air outlet 121, and the arrangement direction from the air inlet 111 to the air outlet 121 can be understood as the thickness direction of the nozzle 100.

[0088] In the width direction of the air nozzle 100, slots 16 are opened on both sides of this embodiment, so that both ends of the baffle 30 are connected to the slots 16, which can improve the stability of the baffle 30 after being installed in the slots 16 and the stability of the baffle 30 during movement.

[0089] Furthermore, the slots 16 of this embodiment may be arranged at two corners of the side wall having the air outlet 121. Accordingly, the shape of the baffle 30 of this embodiment may be as follows: Figure 3 As shown in FIG, two ends of the baffle 30 have bent portions 31, and the bent portions 31 are used to achieve one-to-one matching with the slots 16 at the two corners.

[0090] In some examples, optionally, the nozzle body 10 of this embodiment is provided with air outlets 121 on two opposite sides along the second direction Y.

[0091] Air outlets 121 are provided on both sides to form a two-side air outlet structure. Compared with the one-side air outlet form, the air outlet efficiency can be improved to a certain extent. At the same time, the two sides of a baffle plate 30 can be used to block the air outlets 121 on both sides, so that a baffle plate 30 can play a multi-purpose effect.

[0092] In a second aspect, an embodiment of the present application provides an oven 200, comprising a box body and an air nozzle 100 as in any one of the above technical solutions, wherein the air nozzle 100 is installed in the box body.

[0093] Figure 5 The structural diagram of the oven provided in some embodiments of the present application is schematically shown.

[0094] Combined with Figure 5 As shown, the oven 200 of this embodiment is equipped with a nozzle 100 and a conveying mechanism 210 . The conveying mechanism 210 is used to convey the electrode piece 300 , and the nozzle 100 is used to heat and dry the electrode piece 300 .

[0095] In a third aspect, an embodiment of the present application provides a coating device, including an oven 200 as described in the above technical solution.

[0096] According to some embodiments of the present application, Figures 1 to 4As shown, this embodiment provides a nozzle 100, including a nozzle body 10 and a humidifying assembly 20, wherein the nozzle body 10 is provided with an air inlet 111, an air cavity 15 and an air outlet 121 which are connected in sequence; the humidifying assembly 20 is at least partially located in the air cavity 15 and is used to spray water mist into the air cavity 15. The humidifying assembly 20 of this embodiment includes a water delivery member 21 and at least one spray member 22; the water delivery member 21 is used to connect to an external water supply device, and the spray member 22 is connected to the water delivery member 21 and is used to spray water mist into the air cavity 15. The water delivery member 21 of this embodiment includes a water pipe 211, at least part of which is located in the air cavity 15, and the water pipe 211 is provided with a water inlet 2111 for connecting to an external water supply device. The water inlet 2111 of this embodiment is located outside the air cavity 15. The water pipe 211 of this embodiment is provided with a water outlet 2112, and the spray member 22 is installed on the water pipe 211 and is connected to the water outlet 2112. The water pipe 211 of this embodiment is provided with a plurality of water outlet holes 2112, and the number of the spray elements 22 is multiple. The plurality of water outlet holes 2112 are arranged at intervals in the first direction X of the water pipe 211, and each water outlet hole 2112 is connected to at least one spray element 22; wherein the first direction X is parallel to the extension direction of the air outlet 121 and intersects with the arrangement direction from the air inlet 111 to the air outlet 121. In this embodiment, along the first direction X, the water outlet holes 2112 have multiple rows, and each row includes a plurality of water outlet holes 2112 arranged at intervals along the circumferential direction of the water pipe 211. The air nozzle 100 of this embodiment further includes a plurality of baffles 30, which are connected to the air nozzle body 10 and cover part of the air outlet 121. The baffles 30 of this embodiment are connected to the air nozzle body 10 in a manner of moving on the air nozzle body 10, and the moving direction of the baffles 30 is set along the extension direction Z of the air outlet 121. The nozzle body 10 of this embodiment is provided with a slot 16 adjacent to the air outlet 121, and the extension direction of the slot 16 is arranged parallel to the extension direction Z of the air outlet 121; one end of the baffle 30 is inserted into the slot 16 and moves on the slot 16. The nozzle body 10 of this embodiment is provided with slots 16 on both opposite sides along the second direction Y, and the air outlet 121 is located between the slots 16 on both sides; one end of the opposite ends of the baffle 30 is connected to the slot 16 on one side, and the other end is connected to the slot 16 on the other side. The second direction Y intersects with the first direction X and intersects with the arrangement direction from the air inlet 111 to the air outlet 121. The nozzle body 10 of this embodiment is provided with air outlets 121 on both opposite sides along the second direction Y.

[0097] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application may be combined with each other.

[0098] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit it. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein, but these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

1. A tuyere, characterized in that: include: The air nozzle body comprises a first side wall and a second side wall which are arranged opposite to each other, the first side wall is provided with an air inlet, the second side wall is provided with an air outlet, an air cavity is provided between the first side wall and the second side wall, and the air inlet, the air cavity and the air outlet are connected in sequence; The humidifying component is at least partially located in the wind cavity and is used for spraying water mist into the wind cavity.

2. The air nozzle according to claim 1, characterized in that: The humidification assembly includes a water delivery component and at least one spray component; The water delivery component is used to be connected to an external water supply device, and the spray component is connected to the water delivery component and is used to spray water mist to the wind cavity.

3. The air nozzle according to claim 2, characterized in that: The water delivery member comprises a water pipe, at least a portion of which is located in the wind cavity, and the water pipe is provided with a water inlet for connecting to an external water supply device.

4. The air nozzle according to claim 3, characterized in that: The water inlet is located outside the wind cavity.

5. The air nozzle according to claim 3, characterized in that: The water pipe is provided with a water outlet hole, and the spray component is installed on the water pipe and communicated with the water outlet hole.

6. The air nozzle according to claim 5, characterized in that: The water pipe is provided with a plurality of the water outlet holes, the number of the spray elements is a plurality, the plurality of the water outlet holes are arranged at intervals along the first direction of the water pipe, and each of the water outlet holes is connected to at least one of the spray elements; The first direction is parallel to an extension direction of the air outlet and intersects with an arrangement direction from the air inlet to the air outlet.

7. The air nozzle according to claim 6, characterized in that: Along the first direction, the water outlet holes have multiple rows, and each row includes a plurality of the water outlet holes arranged at intervals along the circumferential direction of the water pipe.

8. The air nozzle according to any one of claims 1 to 7, characterized in that: The air nozzle further comprises at least one baffle, which is connected to the air nozzle body and covers a portion of the air outlet.

9. The air nozzle according to claim 8, characterized in that: The baffle is connected to the nozzle body in a manner of moving on the nozzle body, and the moving direction of the baffle is arranged along the extending direction of the air outlet.

10. The air nozzle according to claim 9, characterized in that: The nozzle body is provided with a slot adjacent to the air outlet, and the extending direction of the slot is arranged parallel to the extending direction of the air outlet; One end of the baffle is inserted into the slot and moves on the slot.

11. The air nozzle according to claim 10, characterized in that: The nozzle body is provided with slots on two opposite sides along the second direction, and the air outlet is located between the slots on both sides; One of the two opposite ends of the baffle is connected to the slot on one side, and the other end is connected to the slot on the other side; The second direction intersects with an extension direction of the air outlet and intersects with an arrangement direction from the air outlet to the air inlet.

12. The air nozzle according to claim 11, characterized in that: The air outlets are disposed on opposite sides of the air nozzle body along the second direction.

13. An oven, characterized in that: It comprises a box body and the air nozzle according to any one of claims 1 to 12, wherein the air nozzle is installed in the box body.

14. A coating device, characterized in that: Comprising the oven as claimed in claim 13.

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