Sintering apparatus and battery manufacturing system

Abstract

The application discloses a sintering device and a battery manufacturing system. The sintering device comprises a furnace body and an atmosphere adjusting assembly. The furnace body is provided with an air inlet hole and an air outlet hole. The atmosphere adjusting assembly comprises a gas supply pipeline, a connecting piece and a rotary air jet. One end of the gas supply pipeline extends into the furnace body through the air inlet hole and is rotatably connected with the connecting piece. The rotary air jet is installed on the connecting piece and rotates with the connecting piece. The rotary air jet is provided with a centrifugal nozzle. The connecting piece is provided with a through hole. The nozzle is in communication with the gas supply pipeline through the through hole and is used for uniformly spraying gas into the furnace body during rotation. The spraying direction of the nozzle is intersected with the rotating direction of the rotary air jet. The rotary air jet rotates by air flow impact of the gas supply pipeline to form a rotational flow diffusion of the sprayed gas in the furnace body. The technical scheme can improve the uniform distribution of inert gas in the sintering furnace, improve the quality of the sintering process and improve the performance of the active material.

Description

Technical Field

[0001] This application relates to the field of batteries, and in particular to a sintering apparatus and a battery manufacturing system. Background Technology

[0002] With the development of new energy technologies, batteries are being used more and more widely, such as in mobile phones, laptops, electric vehicles, electric cars, electric airplanes, electric ships, electric toy cars, electric toy ships, and power tools.

[0003] Sintering is a crucial step in the production of active materials for lithium-ion battery electrodes. The atmosphere within the sintering furnace has a decisive impact on the performance of the active materials, and the uniform distribution of the protective gas within the furnace is particularly critical. Therefore, it is necessary to improve the uniformity of the protective gas distribution within the sintering furnace. Utility Model Content

[0004] In view of the above problems, this application provides a sintering apparatus and a battery manufacturing system that can improve the uniform distribution of inert gas in the sintering furnace, improve the quality of the sintering process, and thereby improve the performance of the electrode active material.

[0005] In a first aspect, this application provides a sintering apparatus, including a furnace body and an atmosphere conditioning assembly. The furnace body is provided with an air inlet and an exhaust outlet, and the atmosphere conditioning assembly includes a gas supply pipe, a connector, and a rotating jet injector. One end of the gas supply pipe extends into the furnace body through the air inlet and is rotatably connected to the connector. The rotating jet injector is mounted on the connector and rotates with it. The rotating jet injector is provided with a centrifugal nozzle, and the connector is provided with a through hole. The nozzle communicates with the gas supply pipe through the through hole, and is used to uniformly inject gas into the furnace body during rotation. The injection direction of the nozzle is intersected with the rotation direction of the rotating jet injector. The rotating jet injector achieves its rotation through the airflow impact of the gas supply pipe, so that the ejected gas forms a swirling diffusion within the furnace body.

[0006] In the technical solution of this application embodiment, a furnace body is provided for heating and sintering active material. The furnace body includes a container for the active material and a heating device. The heating device generates heat through combustion and sinterstellates the material. An atmosphere conditioning component is used to introduce inert gas that does not participate in the combustion reaction into the furnace body to regulate the efficiency of the combustion reaction, thereby controlling the temperature inside the furnace. In the atmosphere conditioning component, a gas supply pipe is used to connect to an inert gas source, introducing inert gas into the furnace body. A connector rotates and seals the rotary jet nozzle to the gas supply pipe. The rotary jet nozzle communicates with the gas supply pipe through a through-hole on the connector to obtain inert gas, and the nozzle ejects the gas to regulate the gas composition inside the furnace. Furthermore, the nozzle on the rotating jet component is angled to its own rotation direction. During rotation, the gas in the gas supply pipe rotates the rotating jet component, and the inert gas forms a vortex in the furnace body, increasing the flow velocity and airflow intensity of the inert gas, making the distribution of inert gas in the furnace body more uniform. Improved gas uniformity can effectively improve the consistency of process conditions in various parts of the furnace body, and improve the stability and consistency of product quality.

[0007] In some embodiments, there are multiple nozzles, which are evenly distributed around the circumference of the rotating jet component, and the jet direction of each nozzle is set at an acute angle to the rotation axis of the rotating jet component. In the above structure, by setting multiple evenly distributed nozzles, the uniformity of gas distribution is improved, further enhancing the stability of the sintering material during the sintering process and the accuracy of temperature control.

[0008] In some embodiments, the rotating jetting component includes a turntable fixedly connected to a connector. The surface of the turntable facing the connector has a groove communicating with a through-hole. The sidewall of the turntable has a nozzle, which communicates with the groove to form a nozzle. In this structure, the shape of the turntable facilitates the simultaneous rotation of the jetting gas from the nozzle. The groove within the turntable connects the nozzle and the through-hole, and it alters the flow direction of the inert gas in the through-hole, allowing the airflow to smoothly exit from the nozzle while simultaneously rotating the turntable, thus enhancing the swirling effect of the gas within the furnace.

[0009] In some embodiments, the turntable includes a first sealing plate, a second sealing plate, a partition plate, and a side sealing plate. The first sealing plate is sealed to the connector and has multiple perforations. The second sealing plate is disposed opposite to the first sealing plate, forming a sealed chamber between them. The partition plate is fixedly connected to the side of the second sealing plate facing the first sealing plate, and divides the sealed chamber into multiple fan-shaped sub-chambers circumferentially, each sub-chamber corresponding to at least one perforation. The side sealing plate is sleeved on the outer edges of the first and second sealing plates to form a sealed connection, and has nozzles on its peripheral wall corresponding to each sub-chamber. The through holes communicate with each sub-chamber through the perforations, and the axis of each nozzle is perpendicular to the radial plane of the turntable. In the above structure, the first sealing plate forms a sealed connection with the connector, the second sealing plate is spaced apart from the first sealing plate, and the side sealing plate provides circumferential sealing to form the sealed chamber. The partition plate divides the sealed chamber into multiple sub-chambers to allow simultaneous gas flow. The air jet is set on the side sealing plate, which allows the gas to be ejected in a direction perpendicular to the overall rotation direction of the turntable, thereby further improving the gas flow and the uniform distribution of the inert gas.

[0010] In some embodiments, the baffles are arc-shaped plates radially distributed along the turntable, with gradually expanding sub-chambers formed between adjacent arc-shaped plates. The width of the sub-chambers gradually increases along the gas flow direction, and the nozzles are located on the side sealing plates at the widest point of the sub-chambers. This structure, by setting the baffles as arc-shaped plates, can further increase the rotational speed of the turntable and enhance the swirling effect.

[0011] In some embodiments, the side of the nozzle facing away from the sealed chamber is also connected to a gas guide pipe. This structure, by providing a gas guide pipe, guides the direction of gas ejection from the nozzle, thereby improving the precision of gas control.

[0012] In some embodiments, the furnace body is further provided with a material support plate for supporting the sintering material. A rotating jet nozzle is located on the side of the material support plate opposite to the sintering material, and the nozzle's spray direction is parallel to the material support plate to reduce the impact of airflow on the sintering material. In the above structure, the support plate supports the sintering material, improving the stability of the sintering process. Positioning the rotating jet nozzle below the support plate, and ensuring the nozzle's spray direction is parallel to the material support plate, reduces disturbance of the ejected gas to the sintering material, thus improving the sintering effect.

[0013] In some embodiments, the gas supply pipe includes an inlet section, a variable diameter section, and a connecting section connected in sequence. The connecting section is used to connect the rotating jet nozzle. The inner diameter of the variable diameter section gradually decreases and then gradually increases along the direction from the inlet section to the connecting section. In the above structure, by setting the variable diameter section, the gas is locally pressurized, thereby increasing the gas velocity. This enhances the centrifugal effect of the rotating jet nozzle's jetting process, increases the jetting speed of the rotating jet nozzle, and thus increases the gas velocity, improving the uniformity of gas distribution within the furnace.

[0014] In some embodiments, the connector includes a fixed flange and a movable flange. The fixed flange is fixedly connected to one end of the gas supply pipe and has a first through hole communicating with the gas supply pipe. The movable flange is rotatably fitted to the fixed flange via a bearing assembly and has a second through hole coaxial with the first through hole. The turntable is fixedly connected to the movable flange. The movable flange can rotate relative to the fixed flange in response to the rotation drive of the turntable, and the first and second through holes remain connected during rotation. This structure, by using a fixed flange to connect the rotating jet component and the connector, and by using a movable flange to allow rotation of the rotating jet component relative to the connector, achieves stability of the gas flow rate during the rotation of the rotating jet component, thereby improving the sintering effect.

[0015] In some embodiments, the sintering apparatus further includes a gas filling mechanism connected to a gas supply pipe to fill gas into the furnace. In the above structure, by providing a gas filling mechanism, the flow rate and volume of gas in the gas supply pipe are increased, the gas swirling effect is enhanced, and the inert gas is filled into all directions within the furnace, thereby improving the sintering effect.

[0016] In some embodiments, a transparent viewing window is provided on the furnace body, and the viewing window is configured to correspond to the atmosphere conditioning components. In the above structure, by providing a viewing window, the sintering process can be observed in real time, improving the accuracy of control over the sintered materials.

[0017] Secondly, this application provides a battery manufacturing system that includes the sintering apparatus described in the above embodiments.

[0018] The above description is only an overview of the technical solution of this application. In order to better understand the technical means of this application and to implement it in accordance with the contents of the specification, and to make the above and other objects, features and advantages of this application more obvious and understandable, the following are specific embodiments of this application. Attached Figure Description

[0019] The features, advantages, and technical effects of exemplary embodiments of this application will now be described with reference to the accompanying drawings.

[0020] Figure 1 This is a schematic diagram of the structure of a battery cell according to an embodiment of this application;

[0021] Figure 2 This is a schematic diagram of the sintering apparatus according to one embodiment of this application;

[0022] Figure 3 This is a schematic diagram of the sintering apparatus according to another embodiment of this application;

[0023] Figure 4 This is a schematic diagram of the structure of a turntable according to one embodiment of this application;

[0024] Figure 5 This is a schematic diagram of the structure of an atmosphere conditioning component according to an embodiment of this application.

[0025] Detailed Explanation of Reference Numerals

[0026] 1. Battery cell; 10. Electrode assembly; 40. Shell; 30. End cap; 20. Housing; 25. Electrode terminal; 2. Sintering device; 201. Furnace body; 202. Atmosphere conditioning assembly; 203. Air inlet; 204. Air supply pipe; 205. Connector; 206. Rotary jet nozzle; 207. Turntable; 208. First sealing plate; 209. Second sealing plate; 210. Partition; 211. Side sealing plate; 212. Nozzle; 213. Sub-chamber; 214. Air guide pipe; 215. Material support plate; 216. Air inlet section; 217. Variable diameter section; 218. Connecting section; 219. Fixed flange; 220. Moving flange; 221. First through hole; 222. Second through hole; 223. Through hole; 224. Nozzle; 3. Sintering material. Detailed Implementation

[0027] The embodiments of the technical solution of this application will now be described in detail with reference to the accompanying drawings. These embodiments are only used to more clearly illustrate the technical solution of this application and are therefore merely examples, and should not be used to limit the scope of protection of this application.

[0028] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains; the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the application; the terms “comprising” and “having”, and any variations thereof, in the specification, claims, and foregoing description of the drawings are intended to cover non-exclusive inclusion.

[0029] In the description of the embodiments of this application, technical terms such as "first" and "second" are used only to distinguish different objects and should not be construed as indicating or implying relative importance or implicitly specifying the number, specific order, or primary and secondary relationship of the indicated technical features. In the description of the embodiments of this application, "multiple" means two or more, unless otherwise explicitly defined.

[0030] In this document, the term "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0031] In the description of the embodiments in this application, the term "and / or" is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, and B existing alone. Additionally, the character " / " in this document generally indicates that the preceding and following related objects have an "or" relationship.

[0032] In the description of the embodiments of this application, the term "multiple" refers to two or more (including two), similarly, "multiple sets" refers to two or more (including two sets), and "multiple pieces" refers to two or more (including two pieces).

[0033] In the description of the embodiments of this application, the technical terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the embodiments of this application and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of this application.

[0034] In the description of the embodiments of this application, unless otherwise expressly specified and limited, technical terms such as "installation," "connection," "joining," and "fixing" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. For those skilled in the art, the specific meaning of the above terms in the embodiments of this application can be understood according to the specific circumstances.

[0035] In the embodiments of this application, the same reference numerals denote 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 this application shown in the accompanying drawings, as well as the overall thickness, length, width, and other dimensions of the integrated device, are merely illustrative and should not constitute any limitation on this application.

[0036] In this application, "multiple" means two or more (including two).

[0037] In the embodiments of this application, the battery cell can be a secondary battery, which refers to a type of battery that can be used again after the battery cell has been discharged by recharging to activate the active materials.

[0038] The battery cell can be a lithium-ion battery, sodium-ion battery, sodium-lithium-ion battery, lithium metal battery, sodium metal battery, lithium-sulfur battery, magnesium-ion battery, nickel-metal hydride battery, nickel-cadmium battery, lead-acid battery, etc., and the embodiments of this application are not limited to this.

[0039] like Figure 1 As shown, a battery cell 1 generally includes an electrode assembly 10. The electrode assembly 10 includes a positive electrode, a negative electrode, and a separator, with the separator positioned between the negative and positive electrodes. During the charging and discharging process of the battery cell 1, active ions (e.g., lithium ions) repeatedly insert and extract between the positive and negative electrodes. The separator, positioned between the positive and negative electrodes, prevents short circuits between the positive and negative electrodes while allowing active ions to pass through.

[0040] In some embodiments, the battery cell 1 may include a housing 40. The housing 40 may be a steel housing, an aluminum housing, a plastic housing (such as polypropylene), a composite metal housing (such as a copper-aluminum composite housing 40), or an aluminum-plastic film, etc. In some embodiments, the housing 40 may be a sealed structure or a non-sealed structure. As an example, when the housing 40 is a non-sealed structure, the housing 40 serves to protect the electrode assembly 10, and a sealing bag is included between the housing 40 and the electrode assembly 10. The sealing bag is used to encapsulate the electrode assembly 10 and the electrolyte. Specifically, the sealing bag may be a bag-shaped insulating component or an aluminum-plastic film. When the housing 40 is a sealed structure, it is used to encapsulate the electrode assembly 10 and the electrolyte, etc.

[0041] As an example, the battery cell 1 can be a cylindrical battery cell 1, a prismatic battery cell 1, a pouch battery cell 1, or a battery cell 1 of other shapes. The prismatic battery cell 1 includes a square battery cell 1, a blade-shaped battery cell 1, and a multi-prismatic battery, such as a hexagonal prismatic battery. This application does not have any particular limitations.

[0042] In some embodiments, the housing 40 includes an end cap 30 and a housing 20, the housing 20 having an opening, and the end cap 30 covering the opening. The housing 20 may have one or more openings. The end cap 30 may also have one or more.

[0043] In some embodiments, at least one electrode terminal 25 is provided on the housing 40, and the electrode terminal 25 is electrically connected to the electrode tab. The electrode terminal 25 can be directly connected to the electrode tab, or it can be indirectly connected to the electrode tab through a current collector. The electrode terminal 25 can be provided on the end cap 30 or on the housing 20.

[0044] In related technologies, the electrode assembly 10 can be formed by winding and shaping a positive electrode sheet, a separator, and a negative electrode sheet. The electrode sheet can be either a positive or negative electrode sheet. For example, the positive electrode sheet includes a current collector and an active material layer covering the current collector. The active material layer is formed by mixing active material powder with a binder, coating it onto the current collector, and then drying and curing it. The active material powder needs to be obtained by sintering the raw materials at high temperatures. During the sintering process, the atmosphere inside the furnace 201 needs to be adjusted according to different sintering stages, such as the heating stage, the holding stage, and the cooling stage. For example, during the heating stage, the inert gas flow rate and velocity are appropriately increased to accelerate the homogenization of the atmosphere inside the furnace; during the holding stage, the rotation speed and inert gas flow rate are reduced to maintain stable atmosphere conditions; during the cooling stage, the parameters are readjusted to ensure that the material cools under a suitable atmosphere and to guarantee the sintering quality. In conventional technologies, the introduction of inert gas is often done in a fixed, direct-flow structure, where the inert gas is directly introduced into the sintering furnace through fixed vents or pipes. This results in uneven gas concentration throughout the furnace, especially in dead zones where the inert gas cannot diffuse evenly. Furthermore, the inert gas outlet being directly opposite the material causes significant temperature fluctuations in that area, leading to uneven sintering and compromised product quality.

[0045] To address the aforementioned issues, this application provides a sintering apparatus 2, comprising a furnace body 201 for heating and sintering active materials. The furnace body 201 contains a container for the active materials and a heating device. The heating device generates heat through combustion and sinterstellates the material. An atmosphere regulating component 202 is used to introduce inert gas that does not participate in the combustion reaction into the furnace body 201 to regulate the efficiency of the combustion reaction, thereby controlling the temperature within the furnace body 201. In the atmosphere regulating component 202, a gas supply pipe 204 connects to an inert gas source, introducing inert gas into the furnace body 201. A connector 205 provides a rotary seal connection between a rotary jet nozzle 206 and the gas supply pipe 204. The rotary jet nozzle 206 communicates with the gas supply pipe 204 through a through-hole 223 on the connector 205 to obtain inert gas, and a nozzle 224 ejects the gas to regulate the gas composition within the furnace body 201. Furthermore, the nozzle 224 on the rotating jet component 206 is set at a certain angle to its own rotation direction. During the rotation, the gas in the gas supply pipe 204 rotates the rotating jet component 206, and the inert gas forms a swirling flow in the furnace body 201, which increases the flow speed and airflow intensity of the inert gas, making the distribution of inert gas in the furnace body 201 more uniform. The improved gas uniformity can effectively improve the consistency of process conditions in various parts of the furnace body 201, and improve the stability and consistency of product quality.

[0046] Please refer to the reference. Figures 2 to 3 , Figure 2 This is a schematic diagram of the sintering apparatus 2 according to one embodiment of this application. Figure 3 This is a schematic diagram of the sintering apparatus 2 according to another embodiment of this application.

[0047] As shown in the figure, the sintering apparatus 2 provided in this embodiment includes a furnace body 201 and an atmosphere conditioning component 202. The furnace body 201 is provided with an air inlet 203 and an exhaust port. The atmosphere conditioning component 202 includes a gas supply pipe 204, a connector 205, and a rotating jet nozzle 206. One end of the gas supply pipe 204 extends into the furnace body 201 through the air inlet 203 and is rotatably connected to the connector 205. The rotating jet nozzle 206 is installed on the connector 205 and rotates with it. The rotating jet nozzle 206 is provided with a centrifugal nozzle 224. The connector 205 is provided with a through hole 223. The nozzle 224 communicates with the gas supply pipe 204 through the through hole 223, and is used to uniformly spray gas into the furnace body 201 during rotation. The spray direction of the nozzle 224 intersects the rotation direction of the rotating jet nozzle 206. The rotating jet nozzle 206 achieves its rotation through the airflow impact of the gas supply pipe 204, so that the sprayed gas forms a swirling diffusion within the furnace body 201.

[0048] The air inlet 203 inside the furnace body 201 is used to introduce inert gases, such as nitrogen, helium, argon, or a mixture of the above gases. For example, since the combustion temperature inside the furnace body 201 is relatively high, it should be made of a material with a certain degree of high-temperature resistance. Optionally, a thermometer and a pressure gauge are also provided inside the furnace body 201 to monitor the temperature and pressure inside the furnace body 201 in real time.

[0049] The atmosphere conditioning assembly 202 includes a gas supply pipe 204, a connector 205, and a rotary jet injector 206. One end of the gas supply pipe 204 extends into the furnace through the air inlet 203 of the furnace body 201, serving as the channel for inert gas to enter the furnace body 201 from the gas source. The connector 205 provides a rotary sealing connection, reliably connecting the rotary jet injector 206 to the gas supply pipe 204, ensuring gas transmission while allowing the rotary jet injector 206 to rotate freely. The rotary jet injector 206 is mounted on the connector 205 and can rotate with it, achieving uniform gas injection into the furnace body 201. The connector 205 has a through hole 223 through which the rotary jet injector 206 communicates with the gas supply pipe 204. When the gas supply pipe 204 introduces inert gas from the gas source, the gas enters the rotary jet injector 206 through the through hole 223, and is then injected into the furnace body 201 by the centrifugal nozzle 224 on the rotary jet injector 206. The nozzle 224 of the rotating jet nozzle 206 is positioned so that its spray direction intersects with its own rotation direction. When the inert gas in the gas supply pipe 204 impacts the rotating jet nozzle 206, a torque is generated due to the specific angular relationship between the spray direction of the nozzle 224 and the rotation direction, thus causing the rotating jet nozzle 206 to rotate. During rotation, the nozzle 224 evenly sprays the inert gas into the furnace body 201, causing the gas to form a swirling diffusion within the furnace.

[0050] In the technical solution of this application embodiment, a furnace body 201 is provided for heating and sintering active material. The furnace body 201 contains a container for holding the sintered material and a heating device. The heating device generates heat through combustion and heats and sintersulates the material. An atmosphere conditioning component 202 is used to introduce inert gas that does not participate in the combustion reaction into the furnace body 201 to regulate the efficiency of the combustion reaction, thereby controlling the temperature inside the furnace body 201. In the atmosphere conditioning component 202, a gas supply pipe 204 is used to connect to an inert gas source, introducing inert gas into the furnace body 201. A connector 205 provides a rotary seal connection between a rotary jet nozzle 206 and the gas supply pipe 204. The rotary jet nozzle 206 communicates with the gas supply pipe 204 through a through hole 223 on the connector 205 to obtain inert gas, and a nozzle 224 ejects the gas to regulate the gas composition inside the furnace body 201. Furthermore, the nozzle 224 on the rotating jet component 206 is set at a certain angle to its own rotation direction. During the rotation, the gas in the gas supply pipe 204 rotates the rotating jet component 206, and the inert gas forms a swirling flow in the furnace body 201, which increases the flow speed and airflow intensity of the inert gas, making the distribution of inert gas in the furnace body 201 more uniform. The improved gas uniformity can effectively improve the consistency of process conditions in various parts of the furnace body 201, and improve the stability and consistency of product quality.

[0051] In some embodiments of this application, there are multiple nozzles 224, which are evenly distributed around the circumference of the rotating jet member 206, and the jet direction of each nozzle 224 is set at an acute angle to the rotation axis of the rotating jet member 206.

[0052] Multiple nozzles 224 are evenly arranged along the circumference of the rotating jet member 206. This means that the spacing angle between adjacent nozzles 224 on the circumference of the rotating jet member 206 is equal. For example, if four nozzles 224 are provided on the rotating jet member 206, the spacing angle between adjacent nozzles 224 is 90°. If six nozzles 224 are provided on the rotating jet member 206, the spacing angle is 60°. This uniform distribution allows gas to be evenly ejected from different directions of the rotating jet member 206.

[0053] In the aforementioned structure, the uniformity of gas distribution is improved by setting multiple evenly distributed nozzles 224, further enhancing the stability of the sintered material during the sintering process and the precision of temperature control. A uniform gas distribution provides a stable atmospheric environment for the sintered material. During sintering, the atmospheric environment has a significant impact on the chemical reactions, phase transitions, and microstructure formation of the sintered material.

[0054] In some embodiments of this application, the rotating jet component 206 includes a turntable 207, which is fixedly connected to a connector 205. The surface of the turntable 207 facing the connector 205 is provided with a groove, which communicates with a through hole 223. The side wall of the turntable 207 is provided with a spray hole 212, which communicates with the groove and forms a nozzle 224.

[0055] The surface of the turntable 207 facing the connector 205 has a groove with a specific shape and depth, designed to communicate with the through hole 223. The through hole 223 generally penetrates the connector 205 and connects to an external air source, serving as a channel for inert gas to enter the rotating jet 206. The communication between the groove and the through hole 223 allows the inert gas flowing in from the through hole 223 to converge and be initially guided within the groove. Spray holes 212 are provided on the sidewall of the turntable 207, communicating with the groove to form a nozzle 224 structure. When the inert gas enters the groove from the through hole 223, it flows along the groove's direction and is eventually ejected at high speed from the spray holes 212 on the sidewall. Because the spray holes 212 are located on the sidewall of the turntable 207, and the spray direction has a certain angular relationship with the rotation axis of the turntable 207, they provide power for the rotation of the turntable 207.

[0056] When inert gas is ejected at high speed from nozzle 212, it generates a reaction force on the turntable 207. Since nozzle 212 is located on the side wall of turntable 207 and the injection direction forms an acute angle with the axis of rotation, this reaction force can be decomposed into a component along the tangent of turntable 207 and a component along the axis of rotation. The tangential component causes turntable 207 to tend to rotate around the axis of rotation, thus driving turntable 207 to rotate. This method of achieving rotation using the reaction force of gas injection eliminates the need for additional complex mechanical transmission structures, simplifying equipment design and manufacturing, reducing costs, and improving the reliability and stability of rotation. The rotation of turntable 207 allows nozzle 212 to continuously change its injection direction during rotation, enabling gas to be injected into furnace body 201 from different directions. Compared to a stationary nozzle 224, the rotating nozzle 212 allows for a more uniform gas distribution within furnace body 201, avoiding situations where local gas concentrations are too high or too low, providing a more stable and uniform atmosphere for the sintering process.

[0057] Due to the rotation of the turntable 207 and the acute angle between the jet direction of the nozzle 212 and the axis of rotation, the gas ejected from the nozzle 212 forms a swirling flow within the furnace body 201. This swirling flow allows the gas to circulate continuously within the furnace body 201, enhancing the convective heat transfer between the gas and the sintering material. Simultaneously, the swirling flow promotes gas mixing, resulting in a more uniform atmosphere within the furnace body 201, which is beneficial for the uniformity of various chemical reactions during sintering. Furthermore, the centrifugal force generated by the swirling flow also provides a certain degree of agitation to the sintering material, helping to improve its uniformity and density.

[0058] Uniform gas distribution and enhanced swirling effect improve heat transfer conditions within the furnace body 201. During sintering, heat is transferred to the sintering material through convection, conduction, and radiation. Uniform gas flow and swirling allow for a more even distribution of heat within the furnace body 201, reducing temperature gradients and thus improving temperature control precision. Precise temperature control is crucial for the quality of the sintered material, preventing sintering defects caused by uneven temperature, such as cracking, deformation, and uneven microstructure.

[0059] In the above structure, the shape of the turntable 207 facilitates the rotation of the gas ejected from the nozzle 212. A groove is provided in the turntable 207 to connect the nozzle 212 and the through hole 223, and the flow direction of the inert gas in the through hole 223 is changed by the groove, so that the airflow can be smoothly ejected from the nozzle 212, while driving the turntable 207 to rotate, thereby improving the swirling effect of the gas in the furnace body 201.

[0060] like Figure 4 As shown, in some embodiments of this application, the turntable 207 includes a first sealing plate 208, a second sealing plate 209, a partition plate 210, and a side sealing plate 211. The first sealing plate 208 is sealed to the connector 205 and has multiple plate holes. The second sealing plate 209 is disposed opposite to the first sealing plate 208, forming a sealed chamber between them. The partition plate 210 is fixedly connected to the side of the second sealing plate 209 facing the first sealing plate 208, and divides the sealed chamber into multiple fan-shaped sub-chambers 213 circumferentially, with each sub-chamber 213 corresponding to at least one plate hole. The side sealing plate 211 is sleeved on the outer edge of the first sealing plate 208 and the second sealing plate 209 to form a sealed connection, and the peripheral wall of the side sealing plate 211 has spray holes 212 corresponding to each sub-chamber 213. The through hole 223 is connected to each sub-chamber 213 through the plate hole, and the axis of each spray hole 212 is set perpendicular to the radial plane of the turntable 207.

[0061] The turntable 207 is composed of a first sealing plate 208, a second sealing plate 209, a partition plate 210, and a side sealing plate 211. This combined structure aims to achieve efficient gas flow and uniform injection, while ensuring the sealing of the turntable 207 during rotation.

[0062] For example, the first sealing plate 208 is sealed to the end face of the connector 205 by welding, bolting, or riveting. Because the first sealing plate 208 is sealed to the connector 205, gas will not leak from the connection between the first sealing plate 208 and the connector 205. The first sealing plate 208 has multiple holes corresponding to the through holes 223 on the connector 205. These holes are important channels for gas to enter the sealed chamber inside the turntable 207 from the connector 205.

[0063] The second sealing plate 209 is disposed opposite to the first sealing plate 208 with a certain gap between them. Their outer edges are sealed together by the side sealing plate 211, thereby forming a sealed chamber between the first sealing plate 208 and the second sealing plate 209. This sealed chamber is the key area for the flow and distribution of gas inside the turntable 207.

[0064] The baffle 210 divides the sealed chamber into multiple fan-shaped sub-chambers 213, with each sub-chamber 213 corresponding to at least one plate orifice. This structure allows gas entering the sealed chamber from the plate orifice to be evenly distributed into each sub-chamber 213. Regardless of the initial gas flow rate and pressure, after distribution by the sub-chambers 213, the gas flow rate and pressure in each sub-chamber 213 tend to be consistent, thus ensuring uniform gas distribution within the rotary table 207. The nozzles 212 on the side sealing plate 211 correspond one-to-one with each sub-chamber 213, allowing gas in each sub-chamber 213 to be independently ejected from the corresponding nozzle 212. This design further ensures the uniformity of gas ejection from the rotary table 207, avoiding localized atmosphere differences within the furnace caused by concentrated gas injection or uneven distribution.

[0065] The axes of each nozzle 212 are perpendicular to the radial plane of the turntable 207, allowing the gas to be ejected in a direction perpendicular to the overall rotation direction of the turntable 207. This vertical injection method generates a large reaction force, which not only propels the turntable 207 to rotate but also enhances the gas flow within the furnace. After vertical injection, the gas forms more complex turbulence and swirls within the furnace, promoting mixing and diffusion between gases, allowing the inert gas to cover the entire furnace space more quickly and evenly.

[0066] In the above structure, the first sealing plate 208 forms a sealed connection with the connector 205, and the second sealing plate 209 is spaced apart from the first sealing plate 208, forming a sealed chamber through a circumferential seal by the side sealing plate 211. The partition plate 210 divides the sealed chamber into multiple sub-chambers 213 to allow simultaneous gas flow. The gas jet is located on the side sealing plate 211, allowing the gas to be ejected in a direction perpendicular to the overall rotation direction of the turntable 207, thereby further improving gas flowability and the uniform distribution of inert gas. Uniform gas distribution and good gas flowability improve heat transfer conditions within the furnace. Uniform gas flow within the furnace can carry away or transfer heat, making the furnace temperature more uniform and reducing temperature gradients. This helps improve the accuracy of temperature control, avoiding sintering defects such as cracking and deformation caused by uneven temperature, thereby improving the yield and quality stability of the sintered products.

[0067] In some embodiments of this application, the partition 210 is an arc-shaped plate radially distributed along the turntable 207, and a gradually expanding sub-chamber 213 is formed between adjacent arc-shaped plates. The width of the sub-chamber 213 gradually increases along the gas flow direction, and the nozzle 212 is provided on the side sealing plate 211 at the widest point of the sub-chamber 213.

[0068] A gradually expanding sub-chamber 213 is formed between adjacent arc-shaped plates. This means that the width of the sub-chamber 213 is not fixed, but gradually increases along the gas flow direction. This gradually expanding structural design is to better guide and regulate the gas flow. When inert gas enters the gradually expanding sub-chamber 213 through the through hole 223 and the plate hole, the gas expands during the flow process due to the gradually increasing width of the sub-chamber 213 along the gas flow direction, according to the principles of fluid mechanics. In this process, the pressure energy of the gas is partially converted into kinetic energy, which increases the gas velocity at the rear end of the sub-chamber 213. When the gas is ejected at high speed from the nozzle 212 on the side sealing plate 211 located at the widest point of the sub-chamber 213, the gas generates a reaction force on the turntable 207. Since the gas velocity is faster at this time, the reaction force is also greater, thus providing stronger rotational power for the turntable 207 and effectively increasing the rotational speed of the turntable 207.

[0069] The above structure, by setting the partition 210 as an arc-shaped plate, can further increase the rotation speed of the turntable 207 and enhance the swirling effect.

[0070] In some embodiments of this application, the side of the nozzle 212 facing away from the sealed chamber is also connected to the air guide pipe 214. Exemplarily, the extension direction of the air guide pipe 214 is the radial direction of the turntable 207.

[0071] The gas guide tube 214 plays a stabilizing role in gas flow, reducing fluctuations in gas flow rate. When gas enters the gas guide tube 214 from the nozzle 212, the inner wall of the gas guide tube 214 constrains the gas, making the gas flow more uniform and stable. During the rotation of the turntable 207, the gas pressure in the sealed chamber may change due to factors such as centrifugal force, causing fluctuations in the gas flow rate at the nozzle 212. The presence of the gas guide tube 214 can buffer the impact of such pressure changes on the gas flow rate, ensuring that the gas is ejected at a relatively stable flow rate. This structure, by setting the gas guide tube 214, guides the direction of gas ejection from the nozzle 212, thereby improving the accuracy of gas control.

[0072] like Figure 2 as well as Figure 3 As shown, in some embodiments of this application, the furnace body 201 is further provided with a material support plate 215, which is used to support the sintering material 3. The rotating jet nozzle 206 is located on the side of the material support plate 215 away from the sintering material 3. The jetting direction of the nozzle 224 is arranged parallel to the material support plate 215 of the sintering material 3 to reduce the impact of the airflow on the sintering material 3.

[0073] The rotary jet 206 is installed on the side of the material support plate 215 opposite to the sintering material 3, that is, below the support plate. This layout design ensures that the rotary jet 206 is not directly exposed above the sintering material 3 during operation. As the core component for gas supply and injection, the rotary jet 206, through its own rotational motion combined with the specific injection direction of the nozzle 224, can form an airflow with a specific direction and intensity within the furnace body 201. Its installation below the support plate avoids direct contact with the sintering material 3 while still influencing the sintering process through reasonable airflow organization. The injection direction of the nozzle 224 is arranged parallel to the material support plate 215, ensuring that the gas ejected from the nozzle 224 does not directly impact the sintering material 3. During the sintering process, the surface condition of the material has a significant impact on the sintering quality. If the gas directly impacts the material surface, it may cause problems such as powder splashing and particle shedding, damaging the surface structure of the material and affecting the uniformity and density of the sintering. Parallel injection airflow avoids this direct impact, protecting the integrity of the material surface. By improving the stability of the sintering process and optimizing the sintering conditions, the performance of sintered products can ultimately be improved.

[0074] In the above structure, a support plate is set to support the sintering material 3, which improves the stability of the sintering process. The rotating jet 206 is set below the support plate, and the jetting direction of the nozzle 224 is arranged parallel to the material support plate 215 of the sintering material 3, which can reduce the disturbance of the jetting gas to the sintering material 3 and improve the sintering effect.

[0075] like Figure 5 As shown, in some embodiments of this application, the gas supply pipe 204 includes an air inlet section 216, a variable diameter section 217, and a connecting section 218 connected in sequence. The connecting section 218 is used to connect the rotating jet component 206. The inner diameter of the variable diameter section 217 gradually decreases and then gradually increases along the direction from the air inlet section 216 to the connecting section 218.

[0076] The variable diameter section 217 is located between the inlet section 216 and the connecting section 218, with its inner diameter gradually decreasing and then gradually increasing. This design of contraction followed by expansion means that when gas flows from the inlet section 216 into the variable diameter section 217, the gas flow channel narrows as the inner diameter gradually decreases. According to the continuity equation and Bernoulli's equation in fluid mechanics, the gas velocity gradually increases, and the pressure also rises accordingly, achieving a local pressurization effect. As the gas continues to flow to the part with the gradually increasing inner diameter, the gas flow channel widens, and the flow velocity is further adjusted under the combined effects of centrifugal effect and other factors, while the pressure also changes.

[0077] For example, the connecting section 218 is connected to the connector 205 and is designed close to the reducing section 217, allowing the localized gas pressurization effect to directly act on the rotating jet 206. The design of the reducing section 217 enables the gas to flow more efficiently within the gas supply pipe 204, reducing energy loss within the pipe. By locally pressurizing and accelerating the gas, it can reach the rotating jet 206 at a more suitable pressure and flow rate, improving the energy utilization efficiency of the entire gas supply system and reducing energy consumption.

[0078] In the above structure, by setting a variable diameter section 217, the gas is locally pressurized, thereby increasing the gas velocity. This enhances the centrifugal effect of the rotary jet 206 during the jetting process, increasing the jetting speed of the rotary jet 206, and thus increasing the gas velocity and the uniformity of gas distribution within the furnace body 201. Uniform gas distribution and stable gas velocity help maintain the stability of process parameters such as temperature and pressure within the furnace body 201. During sintering, fluctuations in temperature and pressure can severely impact product quality. The optimized combination of the gas supply pipe 204 and the rotary jet 206 provides a more stable gas supply to the furnace body 201, reducing process parameter fluctuations caused by unstable gas supply, thereby improving the stability and reliability of the entire sintering system.

[0079] In some embodiments of this application, the connector 205 includes a fixed flange 219 and a movable flange 220. The fixed flange 219 is fixedly connected to one end of the gas supply pipe 204 and has a first through hole 221 communicating with the gas supply pipe 204. The movable flange 220 is rotatably fitted to the fixed flange 219 via a bearing assembly and has a second through hole 222 coaxial with the first through hole 221. The turntable 207 is fixedly connected to the movable flange 220. The movable flange 220 is capable of rotating relative to the fixed flange 219 in response to the rotational drive of the turntable 207, and the first through hole 221 and the second through hole 222 remain in communication during rotation.

[0080] The fixed flange 219 is fixedly connected to one end of the gas supply pipe 204, serving to securely connect the gas supply pipe 204 and the connector 205. The fixed flange 219, fixed to the gas supply pipe 204, provides a stable base for the entire connector 205. Through the reliable connection between the fixed flange 219 and the gas supply pipe 204, the connector 205 can be firmly installed in the gas supply system, preventing loosening or displacement due to the rotation of the rotating jet nozzle 206 or other external factors, thus ensuring the stability of the gas transmission channel. It has a first through hole 221, which communicates with the gas supply pipe 204. Its function is to provide a channel for gas to enter the connector 205 from the gas supply pipe 204, ensuring that the gas can flow smoothly from the gas supply pipe 204 to the subsequent moving flange 220 and the rotating jet nozzle 206.

[0081] The moving flange 220 is rotatably fitted to the fixed flange 219 via a bearing assembly. The bearing assembly allows the moving flange 220 to rotate freely relative to the fixed flange 219, reducing frictional resistance during rotation and ensuring smooth and stable rotation. The moving flange 220 has a second through hole 222 coaxial with the first through hole 221. This coaxial design ensures that the first through hole 221 and the second through hole 222 remain connected during the rotation of the moving flange 220 relative to the fixed flange 219. Thus, regardless of how the moving flange 220 rotates, the gas entering from the gas supply pipe 204 through the first through hole 221 can continue to flow to the rotating jet 206 through the second through hole 222, ensuring a continuous gas supply.

[0082] In the sintering process, the stability of gas flow rate has a significant impact on the sintering effect. A stable gas flow rate ensures a uniform gas atmosphere within the furnace body 201, providing stable heat exchange and chemical reaction conditions for the sintered material 3. For example, in gas-involved oxidation and reduction reactions, a stable gas flow rate ensures sufficient contact between reactants and materials and uniform reaction, reducing sintering defects caused by gas flow rate fluctuations, such as localized over-burning or under-burning, thereby improving the quality and consistency of the sintered product.

[0083] The above structure achieves the connection between the rotating jet 206 and the connecting piece 205 by setting a fixed flange 219 and setting a moving flange 220 to achieve the rotation of the rotating jet 206 relative to the connecting piece 205, thereby realizing the stability of the gas flow rate during the rotation of the rotating jet 206 and improving the sintering effect.

[0084] In some embodiments of this application, the sintering apparatus 2 further includes a gas filling mechanism connected to a gas supply pipe 204 to fill gas into the furnace body 201.

[0085] For example, the inflation mechanism includes a gas storage tank, an inflation pump, and control valves. A gas supply pipe 204 is connected to the gas storage tank, and the inflation pump and control valves are located on the gas supply pipe 204. The control valve controls the connection and closure of the gas supply pipe 204, and the inflation pump is used to pressurize the gas and increase its flow rate.

[0086] In the above structure, by setting up a gas filling mechanism, the flow rate and volume of gas in the gas supply pipe 204 are increased, the swirling effect of the gas is enhanced, and the inert gas is filled into all directions inside the furnace body 201, thereby improving the sintering effect.

[0087] In some embodiments of this application, the furnace body 201 is provided with a transparent viewing window, which is provided in relation to the atmosphere adjustment component 202.

[0088] During sintering, the material undergoes a series of complex physical and chemical changes, such as particle melting, agglomeration, and shrinkage. Operators can directly observe the dynamic changes in the material's morphology through a transparent viewing window on furnace body 201. This intuitive observation helps accurately determine whether the sintering process is proceeding normally. Different stages of material morphology exhibit different characteristics; real-time observation through the viewing window allows for timely detection of discrepancies between the material's morphology and expectations, such as abnormal expansion, cracking, or incomplete localized sintering, providing a basis for timely adjustments to sintering parameters.

[0089] In the above structure, by setting a viewing window, the sintering process can be observed in real time, thereby improving the accuracy of control over the sintering material 3.

[0090] In some optional embodiments, the sintering apparatus 2 includes a furnace body 201 and an atmosphere conditioning assembly 202. The furnace body 201 is provided with an air inlet 203 and an exhaust outlet. The atmosphere conditioning assembly 202 includes a gas supply pipe 204, a connector 205, and a rotating jet nozzle 206. One end of the gas supply pipe 204 extends into the furnace body 201 through the air inlet 203 and is rotatably connected to the connector 205. The rotating jet nozzle 206 is mounted on the connector 205 and rotates with it. The rotating jet nozzle 206 is provided with centrifugal nozzles 224. The connector 205 is provided with through holes 223. The nozzles 224 communicate with the gas supply pipe 204 through the through holes 223, and are used to uniformly spray gas into the furnace body 201 during rotation. There are multiple nozzles 224, which are evenly distributed around the circumference of the rotating jet nozzle 206, and the spray direction of each nozzle 224 is set at an acute angle to the rotation axis of the rotating jet nozzle 206. The nozzle 224 is positioned so that its spray direction intersects with the rotation direction of the rotating jet 206. The rotating jet 206 rotates due to the airflow impact from the gas supply pipe 204, causing the sprayed gas to form a swirling diffusion within the furnace body 201. The turntable 207 includes a first sealing plate 208, a second sealing plate 209, a partition plate 210, and a side sealing plate 211. The first sealing plate 208 is sealed to the connector 205 and has multiple perforations. The second sealing plate 209 is positioned opposite to the first sealing plate 208, forming a sealed chamber between them. The partition plate 210 is fixedly connected to the side of the second sealing plate 209 facing the first sealing plate 208. The partition plate 210 divides the sealed chamber into multiple fan-shaped sub-chambers 213 circumferentially, with each sub-chamber 213 corresponding to at least one perforation. A side sealing plate 211 is sleeved on the outer edge of the first sealing plate 208 and the second sealing plate 209 to form a sealed connection. The peripheral wall of the side sealing plate 211 has nozzles 212 corresponding to each sub-chamber 213. Through holes 223 communicate with each sub-chamber 213 through plate holes, and the axis of each nozzle 212 is perpendicular to the radial plane of the turntable 207. The partition plate 210 is an arc-shaped plate radially distributed along the turntable 207, forming gradually expanding sub-chambers 213 between adjacent arc-shaped plates. The width of each sub-chamber 213 gradually increases along the gas flow direction, and the nozzles 212 are located on the side sealing plate 211 at the widest point of each sub-chamber 213. The side of the nozzle 212 facing away from the sealed chamber is also connected to a gas guide pipe 214. The air supply pipe 204 includes an inlet section 216, a reducing section 217, and a connecting section 218 connected in sequence. The connecting section 218 is used to connect the rotating jet component 206. Along the direction from the inlet section 216 to the connecting section 218, the inner diameter of the reducing section 217 gradually decreases and then gradually increases. The connecting component 205 includes a fixed flange 219 and a movable flange 220. The fixed flange 219 is fixedly connected to one end of the air supply pipe 204 and has a first through hole 221 communicating with the air supply pipe 204.The movable flange 220 is rotatably fitted to the fixed flange 219 via a bearing assembly and has a second through hole 222 coaxial with the first through hole 221. The turntable 207 is fixedly connected to the movable flange 220. The movable flange 220 can rotate relative to the fixed flange 219 in response to the rotation drive of the turntable 207, and the first through hole 221 and the second through hole 222 remain connected during the rotation.

[0091] Embodiments of this application also provide a battery manufacturing system, which includes the sintering apparatus 2 described in the above embodiments. The sintering apparatus 2 is used to sinter the active material powder in the battery cell 1.

[0092] The sintering apparatus 2 includes a furnace body 201 for heating and sintering active materials. The furnace body 201 contains a container for the active materials and a heating device. The heating device generates heat through combustion to heat and sinter the material. An atmosphere conditioning component 202 introduces inert gas that does not participate in the combustion reaction into the furnace body 201 to regulate the efficiency of the combustion reaction and thus control the temperature within the furnace body 201. In the atmosphere conditioning component 202, a gas supply pipe 204 connects to an inert gas source, introducing inert gas into the furnace body 201. A connector 205 provides a rotary seal connection between a rotary jet nozzle 206 and the gas supply pipe 204. The rotary jet nozzle 206 communicates with the gas supply pipe 204 through a through-hole 223 on the connector 205 to obtain inert gas. A nozzle 224 ejects the gas to regulate the gas composition within the furnace body 201. Furthermore, the nozzle 224 on the rotating jet component 206 is set at a certain angle to its own rotation direction. During the rotation, the gas in the gas supply pipe 204 rotates the rotating jet component 206, and the inert gas forms a swirling flow in the furnace body 201, which increases the flow speed and airflow intensity of the inert gas, making the distribution of inert gas in the furnace body 201 more uniform. The improved gas uniformity can effectively improve the consistency of process conditions in various parts of the furnace body 201, and improve the stability and consistency of product quality.

[0093] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and not to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. These modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application, and they should all be covered within the scope of the claims and specification of this application. In particular, as long as there is no structural conflict, the various technical features mentioned in the embodiments can be combined in any way. This application is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A sintering apparatus, characterized in that, include: The furnace body is equipped with air inlet and exhaust outlets; The atmosphere conditioning assembly includes a gas supply pipe, a connector, and a rotating jet injector. One end of the gas supply pipe extends into the furnace body through the air inlet and is rotatably connected to the connector. The rotating jet injector is mounted on the connector and rotates with it. The rotating jet injector is equipped with a centrifugal nozzle. The connector has a through hole, through which the nozzle communicates with the gas supply pipe, for uniformly injecting gas into the furnace body during rotation. The nozzle's spray direction intersects with the rotation direction of the rotating jet component. The rotating jet component achieves its rotation through the airflow impact from the gas supply pipe, causing the sprayed gas to form a swirling diffusion within the furnace body.

2. The sintering apparatus according to claim 1, characterized in that, The number of nozzles is multiple, and the multiple nozzles are evenly distributed along the circumference of the rotating jet component, and the jet direction of each nozzle is set at an acute angle to the rotation axis of the rotating jet component.

3. The sintering apparatus according to claim 2, characterized in that, The rotating jet component includes a turntable, which is fixedly connected to the connector. The surface of the turntable facing the connector has a groove that communicates with the through hole. The side wall of the turntable has a spray hole that communicates with the groove and forms the nozzle.

4. The sintering apparatus according to claim 3, characterized in that, The turntable includes: A first sealing plate is sealed to the connector, and the first sealing plate is provided with a plurality of plate holes; The second sealing plate is disposed opposite to the first sealing plate, and a sealed cavity is formed between the two; A partition is fixedly connected to the side of the second sealing plate facing the first sealing plate. The partition divides the sealing chamber into multiple fan-shaped sub-chambers along the circumference. Each sub-chamber is provided with at least one corresponding plate hole. A side sealing plate is sleeved on the outer edge of the first sealing plate and the second sealing plate to form a sealed connection. The peripheral wall of the side sealing plate is provided with spray holes that correspond one-to-one with each of the sub-chambers. The through hole communicates with each of the sub-chambers through the plate hole, and the axis of each spray hole is perpendicular to the radial plane of the turntable.

5. The sintering apparatus according to claim 4, characterized in that, The partition is an arc-shaped plate radially distributed along the turntable. The adjacent arc-shaped plates form a gradually expanding sub-chamber. The width of the sub-chamber gradually increases along the gas flow direction. The nozzle is located on the side sealing plate at the widest point of the sub-chamber.

6. The sintering apparatus according to claim 4, characterized in that, The side of the nozzle opposite to the sealed chamber is also connected to an air guide pipe.

7. The sintering apparatus according to any one of claims 1-6, characterized in that, The furnace body is also provided with a material support plate, which is used to support the sintering material. The rotating jet nozzle is located on the side of the material support plate away from the sintering material. The jetting direction of the nozzle is arranged parallel to the material support plate of the sintering material to reduce the impact of airflow on the sintering material.

8. The sintering apparatus according to any one of claims 1-6, characterized in that, The air supply pipe includes an air inlet section, a variable diameter section, and a connecting section connected in sequence. The connecting section is used to connect the rotating jet component. The inner diameter of the variable diameter section gradually decreases and then gradually increases along the direction from the air inlet section to the connecting section.

9. The sintering apparatus according to any one of claims 3-6, characterized in that, The connector includes: A fixed flange is fixedly connected to one end of the gas supply pipeline and has a first through hole that communicates with the gas supply pipeline; The movable flange is rotatably fitted to the fixed flange via a bearing assembly and has a second through hole coaxial with the first through hole. The turntable is fixedly connected to the movable flange. The moving flange is able to rotate relative to the fixed flange in response to the rotation drive of the turntable, and the first through hole and the second through hole remain connected during the rotation.

10. The sintering apparatus according to claim 9, characterized in that, The sintering apparatus further includes a gas filling mechanism connected to the gas supply pipe to fill the furnace body with gas.

11. The sintering apparatus according to claim 10, characterized in that, The furnace body is provided with a transparent viewing window, which is set in relation to the atmosphere conditioning component.

12. A battery manufacturing system, characterized in that, The battery manufacturing system includes a sintering apparatus as described in any one of claims 1-11.

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