Gluing nozzle, gluing device and battery production line

Abstract

The utility model relates to the technical field of battery production, in particular to a gluing nozzle, a gluing device and a battery production line. The gluing nozzle comprises a connecting section, a glue homogenizing section and a glue discharging section, a first cavity is formed in the connecting section, and an inlet communicated with the first cavity is formed in one end of the connecting section; the end, deviating from the inlet, of the connecting section is connected with the glue homogenizing section, and a second cavity is formed in the glue homogenizing section and communicates with the first cavity; a glue outlet is formed in one end, deviating from the glue homogenizing section, of the glue outlet section; the end, deviating from the connecting section, of the glue homogenizing section is connected with the glue outlet section, and a third cavity is formed in the glue outlet section and communicates with the second cavity; wherein the connecting section, the glue homogenizing section and the glue discharging section are of an integrated structure. According to the gluing nozzle disclosed by the embodiment of the invention, the connecting section, the glue homogenizing section and the glue discharging section which are of an integrated structure are arranged, so that the gluing nozzle can be integrally formed, and the assembly procedures of the gluing nozzle are reduced.

Description

Technical Field

[0001] The present application relates to the technical field of battery production, and in particular to a glue coating nozzle, a glue coating device and a battery production line. Background Art

[0002] This section merely provides background information related to the present disclosure and is not necessarily prior art.

[0003] As new energy technologies become increasingly mature, new energy vehicles and other electrical equipment are gradually entering the public eye. The core technology of new energy vehicles lies in the battery device, and the safety and stability of the battery device directly determine the performance of the entire vehicle.

[0004] During the production process of battery devices, a glue coating device is often used. The glue coating device includes a glue coating nozzle. The glue coating nozzle includes multiple parts and has many assembly steps. Utility Model Content

[0005] In view of the above problems, the present application provides a glue coating nozzle, a glue coating device and a battery production line, which solve the problem of the glue coating nozzle in the prior art having too many assembly steps.

[0006] A first aspect of an embodiment of the present application provides a glue coating nozzle, comprising:

[0007] A connecting section, wherein a first cavity is provided in the connecting section, and an inlet communicating with the first cavity is provided at one end of the connecting section;

[0008] The end of the connecting section away from the inlet is connected to the glue-distributing section, and a second cavity is provided in the glue-distributing section, and the second cavity is communicated with the first cavity; and

[0009] A glue outlet section, wherein one end of the glue outlet section away from the glue equalizing section is provided with a glue outlet, and the end of the glue equalizing section away from the connecting section is connected to the glue outlet section, and a third cavity is provided in the glue outlet section, and the third cavity is connected to the second cavity;

[0010] Among them, the connecting section, the glue distributing section and the glue discharging section are an integrated structure.

[0011] The glue coating nozzle of the embodiment of the present application can be formed in one piece by providing a connecting section, a glue distribution section and a glue outlet section of an integrated structure, thereby reducing the assembly process of the glue coating nozzle; in addition, the embodiment of the present application is provided with an inlet at one end of the connecting section, a first cavity is provided in the connecting section, a second cavity connected to the first cavity is provided in the glue distribution section, and a third cavity connected to the second cavity is provided in the glue outlet section, so that glue can flow in from the inlet, pass through the first cavity, the second cavity and the third cavity in sequence, and then flow out from the glue outlet, thereby realizing the gluing process.

[0012] In some embodiments of the present application, the glue outlet section is a flat structure, which includes a first plate body and a second plate body arranged opposite to each other, and a reinforcing plate connecting the first plate body and the second plate body, and the reinforcing plate is arranged in the third cavity and spaced apart from the glue outlet.

[0013] In the embodiment of the present application, the glue outlet section is provided with a flat structure, and the glue outlet section includes a first plate body and a second plate body arranged opposite to each other, and a reinforcing plate connecting the first plate body and the second plate body, wherein the reinforcing plate is arranged in the third cavity and is spaced apart from the glue outlet. The reinforcing plate can improve the structural strength of the glue outlet section, reduce the probability of deformation of the glue outlet section under high pressure, and at the same time maintain the lightweight of the glue outlet section.

[0014] In some embodiments of the present application, the number of reinforcing plates is at least two, and at least two reinforcing plates are arranged at intervals along the first direction, and the arrangement direction of the connecting section, the glue distribution section and the glue outlet section intersects with the first direction.

[0015] In the embodiment of the present application, the number of reinforcing plates is at least two, and at least two reinforcing plates are arranged at intervals along the first direction, wherein the arrangement direction of the connecting section, the glue distribution section and the glue outlet section intersects with the first direction. The structural strength of the glue outlet section can be improved from different positions by at least two reinforcing plates, thereby reducing the probability of deformation of the glue outlet section under high pressure.

[0016] In some embodiments of the present application, the contact surface between the reinforcing plate and the first plate body is a plane or a curved surface; and / or, the contact surface between the reinforcing plate and the second plate body is a plane or a curved surface.

[0017] In the embodiments of the present application, the contact surface between the reinforcing plate and the first plate body is a plane or a curved surface, so that the reinforcing plate and the first plate body can be stably connected; the contact surface between the reinforcing plate and the second plate body is a plane or a curved surface, so that the reinforcing plate and the second plate body can be stably connected.

[0018] In some embodiments of the present application, the end of the reinforcing plate along the second direction is a planar structure or a curved surface, and the arrangement direction of the connecting section, the glue distribution section and the glue outlet section is consistent with the second direction.

[0019] In the embodiments of the present application, the end of the reinforcing plate along the second direction is planar or curved, and the arrangement direction of the connecting section, the glue equalizing section and the glue outlet section is consistent with the second direction. This allows the glue to flow downward from both sides of the reinforcing plate along the first direction when passing through the end of the reinforcing plate along the second direction, thereby reducing the impact on the glue flow process.

[0020] In some embodiments of the present application, along the second direction, the minimum distance between the reinforcing plate and the glue-distributing section is greater than the minimum distance between the reinforcing plate and the glue outlet.

[0021] In the embodiment of the present application, by making the minimum distance between the reinforcing plate and the glue distributing section along the second direction greater than the minimum distance between the reinforcing plate and the glue outlet, the reinforcing plate can be arranged closer to the glue outlet, so that the reinforcing plate is connected to the lower half of the first plate body, thereby increasing the structural strength of the lower half of the glue outlet section.

[0022] In some embodiments of the present application, the reinforcement plate is an axisymmetric structure, and the reinforcement plate includes a contact surface connected to the first plate body. Along the second direction, the height H2 of the contact surface is less than 0.5 times the height H1 of the first plate body, the maximum length of the contact surface along the first direction is L2, and the length of the glue outlet along the first direction is L1, and L2 is less than the quotient of L1 and 3 times the number of reinforcement plates.

[0023] In the embodiment of the present application, the reinforcing plate is made into an axisymmetric structure, and the reinforcing plate includes a contact surface connected to the first plate body, and along the second direction, the height H2 of the contact surface is less than 0.5 times the height H1 of the first plate body, thereby reducing the probability that the reinforcing plate is too high in the second direction, resulting in a poor flow uniformity effect of the glue nozzle. In addition, in the embodiment of the present application, the maximum length of the contact surface along the first direction is L2, the length of the glue outlet along the first direction is L1, and L2 is less than the quotient of L1 and 3 times the number of reinforcing plates, thereby reducing the probability that the uniformity of glue discharge near the reinforcing plate will deteriorate.

[0024] In some embodiments of the present application, the glue equalizing section includes a first plate portion and a second plate portion that are relatively arranged, the first plate portion is connected to the first plate body, the second plate portion is connected to the second plate body, the first plate portion and the second plate portion form a second cavity, and a flow equalizing component is provided in the second cavity, the flow equalizing component forms a first flow channel with an inverted cone structure, and the first flow channel is connected to the first cavity.

[0025] In an embodiment of the present application, a glue equalizing section includes a first plate portion and a second plate portion that are relatively arranged, wherein the first plate portion is connected to a first plate body, the second plate portion is connected to a second plate body, the first plate portion and the second plate portion form a second cavity, and a flow equalizing component is provided in the second cavity, the flow equalizing component forms a first flow channel with an inverted cone structure, and the first flow channel is connected to the first cavity. Then, the dynamic performance of the fluid can be optimized and the fluid resistance can be reduced through the first flow channel with an inverted cone structure formed by the flow equalizing component.

[0026] In some embodiments of the present application, the flow equalizing member includes a first flow equalizing plate and a second flow equalizing plate, one of the first flow equalizing plate and the second flow equalizing plate is arranged on the first plate portion and protrudes relative to the first plate portion, the other of the first flow equalizing plate and the second flow equalizing plate is arranged on the second plate portion and protrudes relative to the second plate portion, and a first flow channel is formed between the first flow equalizing plate and the second flow equalizing plate.

[0027] Embodiments of the present application improve the glue discharging uniformity at the glue outlet by forming a gradually narrowing flow region through a first flow channel formed between a first flow equalizing plate and a second flow equalizing plate, where one of the first flow equalizing plate and the second flow equalizing plate is disposed on the first plate portion and protrudes relative to the first plate portion, and the other of the first flow equalizing plate and the second flow equalizing plate is disposed on the second plate portion and protrudes relative to the second plate portion.

[0028] In some embodiments of the present application, the first flow equalizing plate has a frustum-like structure, the second flow equalizing plate has a frustum-like structure, and the first flow equalizing plate and the second flow equalizing plate are symmetrically disposed on opposite sides of the first flow channel.

[0029] Embodiments of the present application form a gradually narrowing first flow channel through two frustum-like structures by making the first flow equalizing plate have a frustum-like structure, the second flow equalizing plate have a frustum-like structure, and the first flow equalizing plate and the second flow equalizing plate be symmetrically disposed on opposite sides of the first flow channel, which has a simple structure and is easy to process.

[0030] In some embodiments of the present application, the first flow equalizing plate has a regular triangular pyramid frustum structure, and the second flow equalizing plate has a regular triangular frustum structure; the maximum length of the regular triangular frustum structure is L3, and L1 / 3 ≤ L3 ≤ 2L1 / 3.

[0031] Embodiments of the present application improve the flow equalizing effect of the glue spraying nozzle by making the first flow equalizing plate have a regular triangular pyramid frustum structure, the second flow equalizing plate have a regular triangular frustum structure, the maximum length of the regular triangular frustum structure be L3, and L1 / 3 ≤ L3 ≤ 2L1 / 3.

[0032] In some embodiments of the present application, the first cavity has a cylindrical structure, and the diameter of the first cavity is t1; the minimum distance between the first flow equalizing plate and the second flow equalizing plate is t2, and t1 / 4 < t2 < 2t1 / 3.

[0033] Embodiments of the present application reduce the probability of blocking the second cavity and achieve a good flow equalizing effect by making the first cavity have a cylindrical structure, where the diameter of the first cavity is t1; the minimum distance between the first flow equalizing plate and the second flow equalizing plate is t2, and t1 / 4 < t2 < 2t1 / 3.

[0034] In some embodiments of the present application, the size of the glue outlet in the third direction is t3, where t1 is greater than 2t3, and the third direction intersects with the first direction and intersects with the second direction.

[0035] Embodiments of the present application improve the consistency of the glue outlet flow rate by changing the size of the flow channel, where the size of the glue outlet in the third direction is t3 and t1 is greater than 2t3.

[0036] A second aspect of the embodiments of the present application provides a gluing device, which includes the gluing nozzle mentioned in the above embodiments.

[0037] A third aspect of the embodiments of the present application proposes a battery production line, comprising the gluing device mentioned in the above embodiments, wherein the gluing nozzle of the gluing device is used for gluing.

[0038] The above description is only an overview of the technical solution of the present application. In order to more clearly understand the technical means of the present application, it can be implemented in accordance with the contents of the specification. In order to make the above and other purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are listed below. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] Various other advantages and benefits will become apparent to those of ordinary skill in the art by reading the detailed description of the preferred embodiments below. The accompanying drawings are only for the purpose of illustrating the preferred embodiments and are not to be considered as limiting the present application. Moreover, the same reference numerals are used throughout the accompanying drawings to represent the same components. In the accompanying drawings:

[0040] Figure 1 A schematic diagram of a three-dimensional structure of a glue coating nozzle provided in some embodiments of the present application;

[0041] Figure 2 for Figure 1 The schematic diagram of the structure of the glue coating nozzle shown in the second viewing angle;

[0042] Figure 3 for Figure 1 The schematic diagram of the structure of the glue coating nozzle shown in FIG. 1 is in a third viewing angle;

[0043] Figure 4 for Figure 1 The schematic diagram of the structure of the glue coating nozzle shown in FIG. 1 is in a fourth viewing angle;

[0044] Figure 5 for Figure 4 The schematic diagram of the cross-sectional structure of the glue coating nozzle shown along the AA cross section;

[0045] Figure 6 for Figure 4 The schematic diagram of the cross-sectional structure of the glue coating nozzle shown along the BB section;

[0046] Figure 7 for Figure 6 A schematic diagram of the cross-sectional structure of the reinforcement plate of the glue coating nozzle shown along the third direction;

[0047] Figure 8 for Figure 6 Another structural schematic diagram of the reinforcing plate of the glue coating nozzle shown in ;

[0048] Fig. 9 for Figure 6 Another structural schematic diagram of the reinforcing plate of the glue coating nozzle shown in ;

[0049] Fig.10 for Figure 6 Another structural schematic diagram of the reinforcing plate of the glue coating nozzle shown in ;

[0050] Fig.11 for Figure 6 Another structural schematic diagram of the reinforcing plate of the glue coating nozzle shown in ;

[0051] Fig.12 A partial structural schematic diagram of a glue coating device provided in some embodiments of the present application.

[0052] The reference numerals are as follows:

[0053] 100. Gluing device;

[0054] 10. Glue coating nozzle; 11. Connecting section; 111. First cavity; 112. Inlet; 113. Connecting thread; 12. Glue distributing section; 121. Second cavity; 1211. First flow channel; 122. First plate; 123. Second plate; 124. Flow balancing member; 1241. First flow balancing plate; 1242. Second flow balancing plate; 13. Glue distributing section; 131. Glue distributing port; 132. Third cavity; 133. First plate body; 134. Second plate body; 135. Third plate body; 136. Fourth plate body; 14. Reinforcement plate;

[0055] 20. Glue coating and conveying components;

[0056] YY, first direction;

[0057] ZZ, second direction;

[0058] XX, third direction;

[0059] H1, the height of the first plate;

[0060] H2, the height of the contact surface between the reinforcing plate and the first plate body;

[0061] L1, the length of the glue outlet along the first direction;

[0062] L2, the maximum length of the contact surface between the reinforcing plate and the first plate body along the first direction;

[0063] t1, diameter of the first cavity;

[0064] t2, the minimum distance between the first current balancing plate and the second current balancing plate;

[0065] t3. Dimension of the glue outlet along the third direction. DETAILED DESCRIPTION

[0066] The following embodiments of the technical solution of the present application are described in detail in conjunction with the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the present application, and are therefore only used as examples, and cannot be used to limit the scope of protection of the present application.

[0067] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by technicians in the technical field to which this application belongs; the terms used herein 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 figure descriptions and any variations thereof are intended to cover non-exclusive inclusions.

[0068] In the description of the embodiments of the present application, the technical terms "first", "second", etc. are only used to distinguish different objects, and cannot be understood as indicating or implying relative importance or implicitly indicating the number, specific order or primary and secondary relationship of the indicated technical features. In the description of the embodiments of the present application, the meaning of "multiple" is more than two, unless otherwise clearly and specifically defined.

[0069] Reference to "embodiments" herein means that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present application. The appearance of the phrase in various locations 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. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0070] In the description of the embodiments of the present application, the term "and / or" is only a description of the association relationship of the associated objects, indicating that there may 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 article generally indicates that the associated objects before and after are in an "or" relationship.

[0071] In the description of the embodiments of the present application, the term "multiple" refers to more than two (including two). Similarly, "multiple groups" refers to more than two groups (including two groups), and "multiple pieces" refers to more than two pieces (including two pieces).

[0072] In the description of the embodiments of the present application, the technical terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial" and "circumferential" etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the embodiments of the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the embodiments of the present application.

[0073] In the description of the embodiments of the present application, unless otherwise clearly specified and limited, technical terms such as "installed", "connected", "connected" and "fixed" 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 mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, and it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the embodiments of the present application can be understood according to the specific circumstances.

[0074] At present, from the perspective of market development, the application of battery devices is becoming more and more extensive. Battery devices are not only used in energy storage power systems such as hydropower, thermal power, wind power and solar power stations, but also widely used in electric vehicles such as electric bicycles, electric motorcycles, electric cars, as well as military equipment and aerospace and other fields. With the continuous expansion of the application field of battery devices, the market demand is also constantly expanding.

[0075] The battery device involved in the embodiment of the present application can be used in, but not limited to, electrical equipment such as vehicles, ships or aircraft. The battery device comprising the battery cells, battery devices, etc. involved in the present application can be used.

[0076] In the embodiments of the present application, the electrical equipment using the battery device as the power source may be, but is not limited to, mobile phones, tablets, laptop computers, electric toys, electric tools, battery cars, electric cars, ships, spacecraft, etc. Among them, the electric toys may include fixed or mobile electric toys, such as game consoles, electric car toys, electric ship toys, and electric airplane toys, etc., and the spacecraft may include airplanes, rockets, space shuttles, and spacecraft, etc.

[0077] It should be understood that the technical solutions described in the embodiments of the present application are not limited to the battery devices and electrical equipment described above, but can also be applied to all batteries including a box and electrical equipment using the battery.

[0078] The battery apparatus mentioned in the embodiments of the present application may include one or more battery cell assemblies for providing voltage and capacity. The battery cell assembly may include multiple battery cells, which are connected in series, in parallel or in mixed connection through a busbar component.

[0079] In some embodiments, a battery cell assembly is generally formed by arranging a plurality of battery cells.

[0080] As an example, the battery cell assembly may be a battery module, which is formed by arranging and fixing a plurality of battery cells to form an independent module. As an example, the battery module may be formed by bundling a plurality of battery cells by a cable tie.

[0081] In some embodiments, the battery device may be a battery pack, which includes a case and one or more battery cell assemblies, wherein the battery cell assemblies are accommodated in the case.

[0082] As an example, the battery cell assembly may be a battery module, and the battery cell assembly may be accommodated in the box by fixing the battery module in the box.

[0083] As an example, the battery cell assembly may also be housed in the case by directly fixing a plurality of battery cells to the case.

[0084] As an example, the box may include a first box and a second box. The first box and the second box are buckled together to form a closed space inside the box to accommodate the battery cell assembly. The closed here means covered or closed, which can be sealed or unsealed. The first box can be a top cover or a bottom plate.

[0085] As an example, the box body may include a top cover, a frame and a bottom plate. The top cover and the bottom plate are respectively connected to the frame, so that a closed space is formed inside the box body to accommodate the battery cell assembly.

[0086] In some embodiments, the box body can be used as a part of the chassis structure of the vehicle. For example, part of the box body can become at least a part of the floor of the vehicle, or part of the box body can become at least a part of the cross beam and longitudinal beam of the vehicle.

[0087] The battery cell includes an electrode assembly and an electrolyte. The electrode assembly is composed of a positive electrode sheet, a negative electrode sheet and a separator. The 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 electrode current collector and a positive electrode active material layer. The positive electrode active material layer is coated on the surface of the positive electrode current collector. The current collector not coated with the positive electrode active material layer protrudes from the current collector coated with the positive electrode active material layer. The current collector not coated with the positive electrode active material layer is stacked as a positive electrode tab. Taking lithium-ion batteries as an example, the material of the positive electrode current collector can be aluminum, and the positive electrode active material can be lithium cobalt oxide, lithium iron phosphate, ternary lithium or lithium manganese oxide. The negative electrode sheet includes a negative electrode current collector and a negative electrode active material layer. The negative electrode active material layer is coated on the surface of the negative electrode current collector. The current collector not coated with the negative electrode active material layer protrudes from the current collector coated with the negative electrode active material layer. The current collector not coated with the negative electrode active material layer is stacked as a negative electrode tab. The material of the negative electrode current collector can be copper, and the negative electrode active material can be carbon or silicon. The material of the isolation film may be PP (polypropylene) or PE (polyethylene), etc. In addition, the electrode assembly may be a winding structure or a stacked structure, but the embodiments of the present application are not limited thereto.

[0088] The technical solutions described in the embodiments of the present application are applicable to various electrical devices that use battery cells, such as mobile phones, portable devices, laptop computers, electric vehicles, electric toys, electric tools, vehicles, ships and spacecraft, for example, spacecraft include airplanes, rockets, space shuttles and spacecraft, etc.

[0089] During the production process of battery devices, a glue coating device is often used. The glue coating device includes a glue coating nozzle. The glue coating nozzle includes multiple components. The multiple components are connected by components such as screws, and there are many assembly steps.

[0090] In order to solve this problem, an embodiment of the present application proposes a glue coating nozzle, including a connecting section, a glue equalizing section and a glue discharging section, wherein a first cavity is provided in the connecting section, and an inlet connected to the first cavity is provided at one end of the connecting section; the end of the connecting section away from the inlet is connected to the glue equalizing section, and a second cavity is provided in the glue equalizing section, and the second cavity is connected to the first cavity; the glue discharging section is a flat structure, and a glue outlet is provided at one end of the flat structure away from the glue equalizing section, and the glue outlet is a long strip structure; the end of the glue equalizing section away from the connecting section is connected to the glue discharging section, and a third cavity is provided in the glue discharging section, and the third cavity is connected to the second cavity; wherein the connecting section, the glue equalizing section and the glue discharging section are an integrated structure. The glue coating nozzle of the embodiment of the present application can be formed in one piece by providing a connecting section, a glue distribution section and a glue outlet section of an integrated structure, thereby reducing the assembly process of the glue coating nozzle; in addition, the embodiment of the present application is provided with an inlet at one end of the connecting section, a first cavity is provided in the connecting section, a second cavity connected to the first cavity is provided in the glue distribution section, and a third cavity connected to the second cavity is provided in the glue outlet section, so that glue can flow in from the inlet, pass through the first cavity, the second cavity and the third cavity in sequence, and then flow out from the glue outlet, thereby realizing the gluing process.

[0091] The glue coating nozzle in the embodiment of the present application can be used on a glue coating device, and the glue coating device is used to coat glue in the production process of a battery device. The glue coating device can also be used in the glue coating process of the production process of other products.

[0092] The structure in the embodiments of the present application will be described in detail below with reference to the accompanying drawings.

[0093] The first aspect of the embodiment of the present application proposes a glue coating nozzle 10, such as Figures 1 to 6 As shown, it includes a connecting section 11, a glue-distributing section 12 and a glue-discharging section 13. A first cavity 111 is provided in the connecting section 11, and an inlet 112 connected to the first cavity 111 is provided at one end of the connecting section 11; the end of the connecting section 11 away from the inlet 112 is connected to the glue-distributing section 12, and a second cavity 121 is provided in the glue-distributing section 12, and the second cavity 121 is connected to the first cavity 111; a glue outlet 131 is provided at one end of the glue-discharging section 13 away from the glue-distributing section 12; the end of the glue-distributing section 12 away from the connecting section 11 is connected to the glue-discharging section 13, and a third cavity 132 is provided in the glue-discharging section 13, and the third cavity 132 is connected to the second cavity 121; wherein, the connecting section 11, the glue-distributing section 12 and the glue-discharging section 13 are an integrated structure.

[0094] It should be noted that the outer surface of the connecting section 11 here is provided with a connecting thread 113 , which can be detachably connected with other parts of the glue coating device 100 .

[0095] The glue-distributing section 12 is located between the connecting section 11 and the glue-discharging section 13, and can even out the glue in the second cavity 121, thereby improving the glue-discharging uniformity of the glue outlet 131. The glue outlet 131 is a wide strip structure, which can apply a wide range of glue at one time, and can improve the glue-discharging efficiency compared to a circular structure.

[0096] The glue outlet section 13 is located at the downstream side of the glue equalizing section 12 . A glue outlet 131 is provided at the end of the glue outlet section 13 . The glue in the third cavity 132 flows from the glue outlet 131 to the glue coating position of the product.

[0097] The glue coating nozzle 10 of the embodiment of the present application can be formed in one piece by providing an integrated connecting section 11, a glue distribution section 12 and a glue outlet section 13, thereby reducing the assembly process of the glue coating nozzle 10; in addition, the embodiment of the present application is provided with an inlet 112 at one end of the connecting section 11, a first cavity 111 is provided in the connecting section 11, a second cavity 121 connected to the first cavity 111 is provided in the glue distribution section 12, and a third cavity 132 connected to the second cavity 121 is provided in the glue outlet section 13, so that glue can flow in from the inlet 112, pass through the first cavity 111, the second cavity 121 and the third cavity 132 in sequence, and then flow out from the glue outlet 131, thereby realizing the gluing process.

[0098] In some embodiments of the present application, Figure 5 As shown, the glue outlet section 13 is a flat structure, and includes a first plate body 133 and a second plate body 134 arranged opposite to each other, and a reinforcing plate 14 connecting the first plate body 133 and the second plate body 134. The reinforcing plate 14 is arranged in the third cavity 132 and is spaced apart from the glue outlet 131.

[0099] The glue outlet section 13 here also includes a portion connecting the first plate body 133 and the second plate body 134, so that the glue outlet section 13 forms a circumferentially completely closed structure.

[0100] It should be noted that the two ends of the reinforcing plate 14 here are respectively integrated with the first plate body 133 and the second plate body 134, so as to increase the strength of the first plate body 133 and the second plate body 134 and increase the structural stability of the glue coating nozzle 10. In addition, the reinforcing plate 14 here is arranged in the third cavity 132 and has a certain interval with the glue outlet 131, so that after the glue passes through the separation of the reinforcing plate 14 and enters the space on the downstream side, it can still gather together and flow out from the glue outlet 131, which can improve the glue outlet 131 The uniformity of the glue outlet 131. Here, by setting the glue outlet section 13 as a flat structure, the width of the glue can be gradually increased after entering the inlet 112 of the connecting section 11, thereby increasing the width of the glue and improving the uniformity of the glue outlet 131.

[0101] In the embodiment of the present application, the glue outlet section 13 includes a first plate body 133 and a second plate body 134 that are relatively arranged, and a reinforcing plate 14 connecting the first plate body 133 and the second plate body 134, wherein the reinforcing plate 14 is arranged in the third cavity 132 and is spaced apart from the glue outlet 131. The reinforcing plate 14 can improve the structural strength of the glue outlet section 13, reduce the probability of deformation of the glue outlet section 13 under high pressure, and at the same time maintain the lightweight of the glue outlet section 13.

[0102] In some embodiments of the present application, Figure 6 As shown, the number of the reinforcing plates 14 is at least two, and at least two reinforcing plates 14 are arranged at intervals along the first direction, and the arrangement direction of the connecting section 11, the glue equalizing section 12 and the glue outlet section 13 intersects with the first direction.

[0103] exist Figure 6 In the embodiment, the number of reinforcing plates 14 is seven, and the seven reinforcing plates 14 are arranged at intervals along the first direction, wherein the arrangement direction of the connecting section 11, the glue-distributing section 12 and the glue-distributing section 13 intersects with the first direction, wherein the arrangement direction of the connecting section 11, the glue-distributing section 12 and the glue-distributing section 13 is Figure 1 The ZZ direction in the figure, wherein the ZZ direction is the second direction, the first direction is the YY direction, and the third direction is XX.

[0104] Optionally, the reinforcing plates 14 are evenly spaced in the second cavity 121 along the YY direction, which can improve the structural strength of the glue outlet section 13 from different positions and reduce the probability of deformation of the glue outlet section 13 under high pressure.

[0105] In the embodiment of the present application, the number of reinforcing plates 14 is at least two, and at least two reinforcing plates 14 are arranged at intervals along the first direction, wherein the arrangement direction of the connecting section 11, the glue equalizing section 12 and the glue outlet section 13 intersects with the first direction. Then, the structural strength of the glue outlet section 13 can be improved from different positions by at least two reinforcing plates 14, thereby reducing the probability of deformation of the glue outlet section 13 under high pressure.

[0106] In some embodiments of the present application, Figures 7 to 11 As shown, the contact surface between the reinforcing plate 14 and the first plate body 133 is a plane or a curved surface; and / or, the contact surface between the reinforcing plate 14 and the second plate body 134 is a plane or a curved surface.

[0107] exist Figure 7 , Figure 8 and Fig. 9 In the embodiment, the contact surface between the reinforcing plate 14 and the first plate body 133 is a plane. At this time, the inner surface of the first plate body 133 is a plane structure, and the inner surface of the second plate body 134 is also a plane structure. Fig.10 and Fig.11In the embodiment, the contact surface between the reinforcing plate 14 and the second plate body 134 is a curved surface. In this case, the inner surface of the first plate body 133 is provided with a curved surface structure, and the inner surface of the second plate body 134 is also provided with a curved surface structure.

[0108] Regardless of whether the contact surface between the reinforcing plate 14 and the first plate body 133 is a plane or a curved surface, or whether the contact surface between the reinforcing plate 14 and the second plate body 134 is a plane or a curved surface, the reinforcing plate 14 and the first plate body 133 can be connected, and the reinforcing plate 14 and the second plate body 134 can be connected.

[0109] In the embodiment of the present application, the contact surface between the reinforcing plate 14 and the first plate body 133 is a plane or a curved surface, so that the reinforcing plate 14 and the first plate body 133 can be stably connected; the contact surface between the reinforcing plate 14 and the second plate body 134 is a plane or a curved surface, so that the reinforcing plate 14 and the second plate body 134 can be stably connected.

[0110] In some embodiments of the present application, Figures 7 to 11 As shown, the end of the reinforcing plate 14 along the second direction is a planar structure or a curved surface, and the arrangement direction of the connecting section 11, the glue-distributing section 12 and the glue-discharging section 13 is consistent with the second direction.

[0111] exist Figure 7 In the embodiment, the end of the reinforcing plate 14 along the second direction is an arc-shaped surface structure. Figure 8 In the embodiment, the end of the reinforcing plate 14 along the second direction is in a bent surface structure. Fig. 9 In the embodiment, the reinforcing plate 14 is a rectangular plate structure, so the end of the reinforcing plate 14 along the second direction is a planar structure. Fig.10 In the embodiment, the reinforcing plate 14 is a spindle-shaped plate structure, and the end of the reinforcing plate 14 along the second direction is a curved surface structure. Fig.11 In the embodiment, the reinforcing plate 14 is an elliptical plate-shaped structure, and the end of the reinforcing plate 14 along the second direction is a curved surface structure.

[0112] In the embodiment of the present application, the end of the reinforcing plate 14 along the second direction is a planar structure or a curved surface, and the arrangement direction of the connecting section 11, the glue equalizing section 12 and the glue outlet section 13 is consistent with the second direction. Therefore, when the glue passes through the end of the reinforcing plate 14 along the second direction, it can flow downward from both sides of the reinforcing plate 14 along the first direction, thereby reducing the impact on the glue flow process.

[0113] In some embodiments of the present application, Figure 6 As shown, along the second direction, the minimum distance between the reinforcing plate 14 and the glue distribution section 12 is greater than the minimum distance between the reinforcing plate 14 and the glue outlet 131. That is, the reinforcing plate 14 is connected to the lower half of the first plate body 133 and is disposed closer to the glue outlet 131.

[0114] In the embodiment of the present application, by making the minimum distance between the reinforcing plate 14 and the glue-distributing section 12 along the second direction greater than the minimum distance between the reinforcing plate 14 and the glue outlet 131, the reinforcing plate 14 can be arranged closer to the glue outlet 131, so that the reinforcing plate 14 is connected to the lower half of the first plate body 133, thereby increasing the structural strength of the lower half of the glue outlet section 13.

[0115] In some embodiments of the present application, Figure 2 , Figures 7 to 11 As shown, the reinforcing plate 14 is an axisymmetric structure, and the reinforcing plate 14 includes a contact surface connected to the first plate body 133. Along the second direction, the height H2 of the contact surface is less than 0.5 times the height H1 of the first plate body 133, the maximum length of the contact surface along the first direction is L2, and the length of the glue outlet 131 along the first direction is L1, and L2 is less than the quotient of L1 and 3 times the number of reinforcing plates 14.

[0116] That is, L2 is smaller than L1 / (3N), where N is the number of reinforcing plates 14 .

[0117] In the embodiment of the present application, the reinforcing plate 14 is made into an axisymmetric structure, and the reinforcing plate 14 includes a contact surface connected to the first plate body 133, and along the second direction, the height H2 of the contact surface is less than 0.5 times the height H1 of the first plate body 133, thereby reducing the probability that the reinforcing plate 14 is too high in the second direction, resulting in a poor flow uniformity effect of the glue nozzle. In addition, in the embodiment of the present application, the maximum length of the contact surface along the first direction is L2, the length of the glue outlet 131 along the first direction is L1, and L2 is less than the quotient of L1 and 3 times the number of reinforcing plates 14, thereby reducing the probability that the uniformity of glue discharge near the reinforcing plate 14 becomes poor.

[0118] In some embodiments of the present application, Figure 5 and Figure 6 As shown, the glue equalizing section 12 includes a first plate portion 122 and a second plate portion 123 that are relatively arranged. The first plate portion 122 is connected to the first plate body 133, and the second plate portion 123 is connected to the second plate body 134. The first plate portion 122 and the second plate portion 123 form a second cavity 121, and a flow equalizing member 124 is provided in the second cavity 121. The flow equalizing member 124 forms a first flow channel 1211 with an inverted cone structure, and the first flow channel 1211 is connected to the first cavity 111.

[0119] It should be noted that if Figure 1 and Figure 2 As shown, the glue-distributing section 12 is formed into a fishtail-shaped structure, and the first plate portion 122 and the second plate portion 123 form a fishtail-shaped second cavity 121 body, so that the glue can flow evenly along the first flow channel 1211 after entering from the inlet 112 .

[0120] The first flow channel 1211 here can be directly formed by processing on the flow equalizing component 124, or the first flow channel 1211 can be surrounded by two components.

[0121] In the embodiment of the present application, the glue equalizing section 12 includes a first plate portion 122 and a second plate portion 123 which are arranged opposite to each other, wherein the first plate portion 122 is connected to the first plate body 133, the second plate portion 123 is connected to the second plate body 134, the first plate portion 122 and the second plate portion 123 form a second cavity 121, and a flow equalizing member 124 is provided in the second cavity 121, the flow equalizing member 124 forms a first flow channel 1211 with an inverted cone structure, and the first flow channel 1211 is connected to the first cavity 111, so that the dynamic performance of the fluid can be optimized and the fluid resistance can be reduced through the first flow channel 1211 with an inverted cone structure formed by the flow equalizing member 124.

[0122] In some embodiments of the present application, Figure 5 and Figure 6 As shown, the flow equalizing member 124 includes a first flow equalizing plate 1241 and a second flow equalizing plate 1242, one of the first flow equalizing plate 1241 and the second flow equalizing plate 1242 is arranged on the first plate portion 122 and protrudes relative to the first plate portion 122, the other of the first flow equalizing plate 1241 and the second flow equalizing plate 1242 is arranged on the second plate portion 123 and protrudes relative to the second plate portion 123, and a first flow channel 1211 is formed between the first flow equalizing plate 1241 and the second flow equalizing plate 1242.

[0123] exist Figure 5 In the embodiment, the first current balancing plate 1241 is disposed on the first plate portion 122 , the second current balancing plate 1242 is disposed on the second plate portion 123 , and the first current balancing plate 1241 and the second current balancing plate 1242 are symmetrically arranged.

[0124] In the embodiment of the present application, a first current balancing plate 1241 and a second current balancing plate 1242 are arranged, wherein one of the first current balancing plate 1241 and the second current balancing plate 1242 is arranged on the first plate portion 122 and protrudes relative to the first plate portion 122, and the other of the first current balancing plate 1241 and the second current balancing plate 1242 is arranged on the second plate portion 123 and protrudes relative to the second plate portion 123, and a first flow channel 1211 is formed between the first current balancing plate 1241 and the second current balancing plate 1242. A gradually narrowing flow area can be formed through the first flow channel 1211, thereby improving the uniformity of the glue discharge from the glue outlet 131.

[0125] Specifically, the first current balancing plate 1241 is in a prism-shaped structure, the second current balancing plate 1242 is in a prism-shaped structure, and the first current balancing plate 1241 and the second current balancing plate 1242 are symmetrically arranged on opposite sides of the first flow channel 1211 .

[0126] The frustum-shaped structure here can be a triangular frustum structure or a quadrangular frustum structure, etc., which can form a gradually narrowing flow region between the first flow equalizing plate 1241 and the second flow equalizing plate 1242, and the downstream side of the first flow channel 1211 has flow channels with the same size, enabling the homogenization of the glue.

[0127] In the embodiment of the present application, by making the first flow equalizing plate 1241 in a frustum shape and the second flow equalizing plate 1242 in a frustum shape, and the first flow equalizing plate 1241 and the second flow equalizing plate 1242 are symmetrically arranged on opposite sides of the first flow channel 1211, a gradually narrowing first flow channel 1211 can be formed by the two frustum-shaped structures, with a simple structure and easy processing.

[0128] Optionally, as Figure 6 shown, the first flow equalizing plate 1241 is a regular triangular pyramid frustum structure, and the second flow equalizing plate 1242 is a regular triangular frustum structure; the maximum length of the regular triangular frustum structure is L3, and L1 / 3 ≤ L3 ≤ 2L1 / 3.

[0129] Specifically, L3 can be equal to 0.5L1 or 0.6L1, which can avoid reducing the glue discharging uniformity of the glue outlet 131 due to too small L3, and can also avoid reducing the glue discharging uniformity of the glue outlet 131 due to too large L3.

[0130] In the embodiment of the present application, by making the first flow equalizing plate 1241 a regular triangular pyramid frustum structure and the second flow equalizing plate 1242 a regular triangular frustum structure; the maximum length of the regular triangular frustum structure is L3, and L1 / 3 ≤ L3 ≤ 2L1 / 3, the flow equalizing effect of the glue spraying nozzle can be improved.

[0131] In some embodiments of the present application, as Figure 5 shown, the first cavity 111 is in a cylindrical structure, and the diameter of the first cavity 111 is t1; the minimum interval between the first flow equalizing plate 1241 and the second flow equalizing plate 1242 is t2, and t1 / 4 < t2 < 2t1 / 3.

[0132] Specifically, t2 can be 0.3t1, 0.4t1, 0.5t1 or 0.6t1, etc.

[0133] In the embodiment of the present application, by making the first cavity 111 in a cylindrical structure, where the diameter of the first cavity 111 is t1; the minimum interval between the first flow equalizing plate 1241 and the second flow equalizing plate 1242 is t2, and t1 / 4 < t2 < 2t1 / 3, the probability of glue blockage in the second cavity 121 can be reduced, and a good flow equalizing effect can be achieved.

[0134] In some embodiments of the present application, as Figure 5 shown, the size of the glue outlet 131 in the third direction is t3, where t1 is greater than 2t3, and the third direction intersects with the first direction and intersects with the second direction.

[0135] Specifically, t1 may be 2.5t3 or 3t3, etc., and the consistency of the flow rate of the glue outlet 131 can be improved by narrowing the flow channel.

[0136] In the embodiment of the present application, the dimension of the glue outlet 131 along the third direction is t3, wherein t1 is greater than 2t3, and the consistency of the flow rate of the glue outlet 131 can be improved by changing the dimension of the flow channel.

[0137] Alternatively, if Figure 5 and Figure 6 As shown, the glue outlet section 13 also includes a third plate 135 and a fourth plate 136, wherein the third plate 135 and the fourth plate 136 are arranged opposite to each other, the third plate 135 is connected to the first plate 133, and the fourth plate 136 is connected to the second plate 134, wherein the third plate 135 and the fourth plate 136 surround the glue outlet 131, and the flow channel formed between the third plate 135 and the fourth plate 136 gradually narrows, so that the glue can flow out of the glue outlet 131 evenly.

[0138] In some embodiments of the present application, the glue nozzle 10 is a plastic part.

[0139] The plastic parts here can be made of plastics such as polytetrafluoroethylene or polyvinyl chloride plastics, and are formed in one piece using an injection molding process.

[0140] In the embodiment of the present application, the glue nozzle 10 is made of a plastic part, and the integrated production of the glue nozzle 10 can be realized through the injection molding process, thereby reducing the assembly process and the manufacturing cost of the glue nozzle 10. In addition, the plastic part can also reduce the cost and reduce the situation where the glue is adhered to the inner wall of the glue nozzle 10.

[0141] The length L1 of the glue outlet 131 along the first direction is usually 45mm to 150mm, specifically 45mm, 50mm, 80mm, 100mm or 150mm, etc. The dimension t3 of the glue outlet 131 along the third direction is usually 0.5mm to 3mm, specifically 0.5mm, 1mm, 2mm, 2.5mm or 3mm, etc.

[0142] The glue coating nozzle 10 of the embodiment of the present application can reduce the cost by more than 90% compared with the split structure, and the consistency of the glue thickness of the glue outlet 131 is greater than 95%.

[0143] The second aspect of the embodiment of the present application provides a glue coating device 100, such as Fig.12As shown, the glue coating device 100 includes the glue coating nozzle 10 mentioned in the above embodiment, and the glue coating device 100 also includes a glue coating conveying component 20, wherein the glue coating conveying component 20 is connected to the glue coating nozzle 10, and is used to convey glue to the glue coating nozzle 10. The glue here can be epoxy resin glue, silicone rubber or polyurethane glue.

[0144] The method of using the glue coating device 100 is as follows:

[0145] Confirm that the glue delivery assembly 20 and the glue nozzle 10 are intact and not damaged or blocked.

[0146] The glue coating nozzle 10 is connected to the glue coating delivery assembly 20 so that the connection is firm and the seal is good, thereby reducing the probability of glue leakage.

[0147] The parameters of the glue coating device 100, such as pressure, temperature, etc., are adjusted to meet specific glue coating requirements.

[0148] Turn on the glue supply system and observe the glue dispensing speed and uniformity of the glue dispensing nozzle. If adjustments are needed, they can be made by changing the parameters of the glue coating device 100 or adjusting the position of the glue coating nozzle 10. During the glue coating process, the distance and angle between the glue coating nozzle 10 and the work surface are maintained to ensure uniform glue distribution.

[0149] After the glue coating is completed, the glue supply system is turned off, the operation of the glue coating device 100 is stopped, and the glue coating nozzle 10 and the glue coating conveying assembly 20 are cleaned to reduce the phenomenon of glue solidification blocking the glue coating nozzle 10.

[0150] A third aspect of the embodiments of the present application proposes a battery production line, comprising the glue coating device 100 mentioned in the above embodiments, wherein the glue coating nozzle 10 of the glue coating device 100 is used for glue coating.

[0151] Of course, the battery production line here may also include equipment such as welding devices and winding devices, which are used in different production processes of battery devices.

[0152] The above description is only an overview of the technical solution of the present application. In order to more clearly understand the technical means of the present application, it can be implemented in accordance with the contents of the specification. In order to make the above and other purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are listed below.

[0153] The first aspect of the embodiment of the present application proposes a glue coating nozzle 10, including a connecting section 11, a glue-distributing section 12 and a glue-discharging section 13. A first cavity 111 is provided in the connecting section 11, and an inlet 112 connected to the first cavity 111 is provided at one end of the connecting section 11; the end of the connecting section 11 away from the inlet 112 is connected to the glue-distributing section 12, and a second cavity 121 is provided in the glue-distributing section 12, and the second cavity 121 is connected to the first cavity 111; a glue outlet 131 is provided at one end of the glue-discharging section 13 away from the glue-distributing section 12; the end of the glue-distributing section 12 away from the connecting section 11 is connected to the glue-discharging section 13, and a third cavity 132 is provided in the glue-discharging section 13, and the third cavity 132 is connected to the second cavity 121; wherein the connecting section 11, the glue-distributing section 12 and the glue-discharging section 13 are an integrated structure. Further, the glue outlet section 13 includes a first plate body 133 and a second plate body 134 arranged opposite to each other, and a reinforcing plate 14 connecting the first plate body 133 and the second plate body 134, and the reinforcing plate 14 is arranged in the third cavity 132 and spaced apart from the glue outlet 131. Further, the number of reinforcing plates 14 is at least two, and at least two reinforcing plates 14 are spaced apart along the first direction, and the arrangement direction of the connecting section 11, the glue-distributing section 12 and the glue outlet section 13 intersects with the first direction. Further, the contact surface between the reinforcing plate 14 and the first plate body 133 is a plane or a curved surface; and / or, the contact surface between the reinforcing plate 14 and the second plate body 134 is a plane or a curved surface. Further, the end of the reinforcing plate 14 along the second direction is a planar structure or a curved surface, and the arrangement direction of the connecting section 11, the glue-distributing section 12 and the glue outlet section 13 is consistent with the second direction. Further, along the second direction, the minimum distance between the reinforcing plate 14 and the glue-distributing section 12 is greater than the minimum distance between the reinforcing plate 14 and the glue outlet 131. Further, the reinforcing plate 14 is an axisymmetric structure, and the reinforcing plate 14 includes a contact surface connected to the first plate body 133, and along the second direction, the height H2 of the contact surface is less than 0.5 times the height H1 of the first plate body 133, the maximum length of the contact surface along the first direction is L2, and the length of the glue outlet 131 along the first direction is L1, and L2 is less than the quotient of L1 and 3 times the number of reinforcing plates 14. Furthermore, the glue equalizing section 12 includes a first plate portion 122 and a second plate portion 123 which are arranged opposite to each other. The first plate portion 122 is connected to the first plate body 133, and the second plate portion 123 is connected to the second plate body 134. The first plate portion 122 and the second plate portion 123 form a second cavity 121, and a flow equalizing member 124 is provided in the second cavity 121. The flow equalizing member 124 forms a first flow channel 1211 with an inverted cone structure, and the first flow channel 1211 is connected to the first cavity 111.Further, the flow equalizing member 124 includes a first flow equalizing plate 1241 and a second flow equalizing plate 1242. One of the first flow equalizing plate 1241 and the second flow equalizing plate 1242 is disposed on the first plate portion 122 and protrudes relative to the first plate portion 122. The other of the first flow equalizing plate 1241 and the second flow equalizing plate 1242 is disposed on the second plate portion 123 and protrudes relative to the second plate portion 123. A first flow channel 1211 is formed between the first flow equalizing plate 1241 and the second flow equalizing plate 1242. Further, the first flow equalizing plate 1241 has a frustum-shaped structure, the second flow equalizing plate 1242 has a frustum shape, and the first flow equalizing plate 1241 and the second flow equalizing plate 1242 are symmetrically disposed on opposite sides of the first flow channel 1211. Further, the first flow equalizing plate 1241 has a regular triangular pyramid frustum structure, and the second flow equalizing plate 1242 has a regular triangular frustum structure; the maximum length of the regular triangular frustum structure is L3, and L1 / 3 ≤ L3 ≤ 2L1 / 3. Further, the first cavity 111 has a cylindrical structure, and the diameter of the first cavity 111 is t1; the minimum distance between the first flow equalizing plate 1241 and the second flow equalizing plate 1242 is t2, and t1 / 4 < t2 < 2t1 / 3. Further, the size of the glue outlet 131 in the third direction is t3, where t1 is greater than 2t3, and the third direction intersects the first direction and intersects the second direction.

[0154] The above is only a preferred specific embodiment of the present application, but the protection scope of the present application is not limited thereto. Any changes or substitutions that can be easily thought of by those skilled in the art within the technical scope disclosed in the present application should be covered by the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. A glue coating nozzle, characterized in that: include: A connecting section, wherein a first cavity is provided in the connecting section, and an inlet communicating with the first cavity is provided at one end of the connecting section; a glue-distributing section, wherein the end of the connecting section away from the inlet is connected to the glue-distributing section, and a second cavity is provided in the glue-distributing section, and the second cavity is communicated with the first cavity; and A glue outlet section, wherein one end of the glue outlet section away from the glue equalizing section is provided with a glue outlet; the end of the glue equalizing section away from the connecting section is connected to the glue outlet section, and a third cavity is provided in the glue outlet section, and the third cavity is connected to the second cavity; Wherein, the connecting section, the glue equalizing section and the glue outlet section are an integrated structure.

2. The gluing nozzle according to claim 1, characterized in that: The glue outlet section is a flat structure, and includes a first plate body and a second plate body that are arranged opposite to each other, and a reinforcing plate connecting the first plate body and the second plate body, wherein the reinforcing plate is arranged in the third cavity and spaced apart from the glue outlet.

3. The gluing nozzle according to claim 2, characterized in that: The number of the reinforcing plates is at least two, and at least two of the reinforcing plates are arranged at intervals along the first direction, and the arrangement direction of the connecting section, the glue equalizing section and the glue outlet section intersects with the first direction.

4. The glue coating nozzle according to claim 3, characterized in that: The contact surface between the reinforcing plate and the first plate body is a flat surface or a curved surface; And / or, the contact surface between the reinforcing plate and the second plate body is a flat surface or a curved surface.

5. The glue coating nozzle according to claim 4, characterized in that: The end of the reinforcing plate along the second direction is in a planar structure or a curved surface, and the arrangement direction of the connecting section, the glue-distributing section and the glue-discharging section is consistent with the second direction.

6. The glue coating nozzle according to claim 5, characterized in that: Along the second direction, the minimum distance between the reinforcing plate and the glue-distributing section is greater than the minimum distance between the reinforcing plate and the glue outlet.

7. The glue coating nozzle according to claim 5, characterized in that: The reinforcing plate is an axisymmetric structure, and includes a contact surface connected to the first plate body. Along the second direction, the height H2 of the contact surface is less than 0.5 times the height H1 of the first plate body. The maximum length of the contact surface along the first direction is L2. The length of the glue outlet along the first direction is L1. L2 is less than the quotient of L1 and 3 times the number of the reinforcing plates.

8. The glue coating nozzle according to claim 6, characterized in that: The glue equalizing section includes a first plate portion and a second plate portion that are arranged opposite to each other, the first plate portion is connected to the first plate body, the second plate portion is connected to the second plate body, the first plate portion and the second plate portion surround the second cavity, and a flow equalizing component is provided in the second cavity, the flow equalizing component surrounds a first flow channel with an inverted cone structure, and the first flow channel is connected to the first cavity.

9. The glue coating nozzle according to claim 8, characterized in that: The flow balancing component includes a first flow balancing plate and a second flow balancing plate, one of the first flow balancing plate and the second flow balancing plate is arranged on the first plate portion and protrudes relative to the first plate portion, the other of the first flow balancing plate and the second flow balancing plate is arranged on the second plate portion and protrudes relative to the second plate portion, and the first flow channel is formed between the first flow balancing plate and the second flow balancing plate.

10. The glue coating nozzle according to claim 9, characterized in that: The first current balancing plate is in a prism-shaped structure, the second current balancing plate is in a prism-shaped structure, and the first current balancing plate and the second current balancing plate are symmetrically arranged on opposite sides of the first flow channel.

11. The glue coating nozzle according to claim 9, characterized in that: The first flow balancing plate is a regular triangular pyramid structure, and the second flow balancing plate is a regular triangular pyramid structure; The maximum length of the regular triangular pyramid structure is L3, and L1 / 3≤L3≤2L1 / 3.

12. The glue coating nozzle according to claim 10, characterized in that: The first cavity is a cylindrical structure, and the diameter of the first cavity is t1; The minimum interval between the first current balancing plate and the second current balancing plate is t2, t1 / 4 <t2<2t1 / 3。 13. The glue coating nozzle according to claim 11, characterized in that: A dimension of the glue outlet along the third direction is t3, wherein t1 is greater than 2t3, and wherein the third direction intersects with the first direction and with the second direction.

14. A glue coating device, characterized in that: The invention comprises a glue coating nozzle as claimed in any one of claims 1 to 13.

15. A battery production line, characterized in that: It comprises the gluing device as claimed in claim 14, wherein the gluing nozzle of the gluing device is used for gluing.

Images