Coating die head and coating equipment

Abstract

The embodiment of the invention provides a coating die head and coating equipment, and belongs to the technical field of battery manufacturing. The coating die head comprises a die head main body, the die head main body is provided with a die cavity, the die head main body is provided with a feeding hole, a discharging part and a pressure regulating piece, and the feeding hole, the discharging part and the pressure regulating piece are all communicated with the die cavity; and the pressure adjusting piece is configured to be opened or closed when the pressure distribution of the die cavities is inconsistent so as to adjust the pressure distribution of the die cavities. The pressure distribution in the die cavity is more uniform, the discharging is more stable, and the slurry coating effect is better.

Description

Technical Field

[0001] The present application relates to the field of battery manufacturing technology, and in particular to a coating die head and coating equipment. Background Art

[0002] The manufacturing process of lithium batteries includes a coating process, which is to use coating equipment to apply slurry on the substrate.

[0003] The coating equipment has a coating die head, the coating die head has a mold cavity, and the coating die head is provided with a discharge portion and a feed port connected to the mold cavity, so that the slurry flows through the feed port, the mold cavity and the discharge portion in sequence.

[0004] However, the slurry coating effect of the existing coating die head is poor. Summary of the invention

[0005] The embodiments of the present application provide a coating die and a coating device to solve the problem of poor slurry coating effect of the existing coating die.

[0006] In a first aspect, an embodiment of the present application provides a coating die head, comprising:

[0007] A die body, wherein a die cavity is formed on the die body, and a feed port, a discharge port and a pressure regulating member are arranged on the die body, and the feed port, the discharge port and the pressure regulating member are all connected to the die cavity;

[0008] The pressure regulating member is configured to be opened or closed when the pressure distribution in the mold cavity is inconsistent so as to adjust the pressure distribution in the mold cavity.

[0009] In a possible implementation, the coating die head provided in the embodiment of the present application further includes an adjustment component, the adjustment component is connected to the pressure regulating member, and a portion of the adjustment component is located in the mold cavity;

[0010] The regulating component is configured to detect the mold cavity pressure so as to control the pressure regulating component to open when the mold cavity pressure is greater than a preset pressure range, or to control the pressure regulating component to close when the mold cavity pressure is less than the preset pressure range.

[0011] In a possible embodiment, in the coating die provided in the embodiment of the present application, the adjustment component includes a control component and a plurality of detection components connected to the control component, wherein the detection components are arranged at intervals in the mold cavity, the control component is connected to the pressure regulating component, the detection components are used to detect the pressures at different positions of the mold cavity respectively, and the control component is used to control the pressure regulating component to be opened or closed.

[0012] In a possible implementation, in the coating die provided in the embodiment of the present application, at least two pressure regulating components are arranged on the die body at intervals, and at least one detection component is arranged corresponding to the pressure regulating component.

[0013] In a possible embodiment, in the coating die provided in an embodiment of the present application, the mold cavity is provided with a curved surface, a reverse arc segment is provided on the side of the curved surface facing the discharge portion, the reverse arc segment is smoothly connected to the discharge portion, and the curvature of the reverse arc segment is opposite to the curvature of the curved surface.

[0014] In a possible implementation, the coating die provided in the embodiment of the present application further includes a material sparging component, wherein the material sparging component is disposed on the die body, and a portion of the material sparging component is located in the die cavity;

[0015] The slurry assembly is configured such that a portion located in the mold cavity rotates relative to the mold cavity to stir the slurry in the mold cavity.

[0016] In a possible implementation, the coating die head provided in the embodiment of the present application, the sparging assembly includes:

[0017] at least one rotating member, the rotating member being located in the mold cavity;

[0018] A driving member is arranged on the die body and is magnetically connected to the rotating member so as to drive the rotating member to rotate through electromagnetic force.

[0019] In a possible implementation, in the coating die head provided in the embodiment of the present application, the material leveling assembly further includes at least one support member, the support member is inserted into the mold cavity, and the rotating members are sleeved on the support member in a one-to-one correspondence.

[0020] In a possible implementation, the coating die provided in the embodiment of the present application further includes a temperature control component, wherein the temperature control component is disposed on the die body and adjacent to the die cavity;

[0021] The temperature control component is configured to detect the temperature of the mold cavity and control the temperature of the mold cavity within a preset temperature range.

[0022] In a second aspect, an embodiment of the present application provides a coating device, comprising a device body and any of the above-mentioned coating die heads arranged on the device body.

[0023] The coating die and coating equipment provided in the embodiment of the present application have a die cavity, and are provided with a feed port, a discharge portion and a pressure regulating piece connected to the die cavity. By opening the pressure regulating piece, the pressure regulating piece is connected to the die cavity, and then when the pressure in the die cavity exceeds the preset pressure range, the pressure regulating piece can be opened so that part of the slurry in the die cavity can flow out through the pressure regulating piece, appropriately reducing the pressure in the die cavity, and when the pressure in the die cavity is less than the preset pressure range, the pressure regulating piece is closed so that the pressure in the die cavity increases, thereby adjusting the pressure in the die cavity, making it easier to make the pressure distribution in the die cavity more uniform, the discharge more stable and uniform, and the slurry coating effect better. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present application and, together with the description, serve to explain the principles of the present application.

[0025] Figure 1 A schematic diagram of the structure of a coating die head provided in an embodiment of the present application;

[0026] Figure 2 for Figure 1 A schematic diagram of the structure of the coating die from another perspective;

[0027] Figure 3 for Figure 1 A schematic diagram of the structure of the coating die head from another perspective;

[0028] Figure 4 for Figure 2 AA section view;

[0029] Figure 5 for Figure 3 BB cross-sectional view;

[0030] Figure 6 for Figure 5 Enlarged view of point C;

[0031] Figure 7 for Figure 6 Schematic diagram of the structure of the rotating parts.

[0032] Description of reference numerals:

[0033] 100-die body; 110-die cavity; 120-discharging portion; 130-feeding port; 140-pressure regulating member; 150-upper die; 160-lower die; 161-arc surface; 162-reverse arc segment;

[0034] 200-adjustment component;

[0035] 300- material leveling assembly; 310- rotating member; 320- driving member; 330- supporting member;

[0036] 400-temperature control component; 410-temperature control pipeline; 411-water inlet; 412-water outlet.

[0037] The above drawings have shown clear embodiments of the present application, which will be described in more detail later. These drawings and text descriptions are not intended to limit the scope of the present application in any way, but to illustrate the concept of the present application to those skilled in the art by referring to specific embodiments. DETAILED DESCRIPTION

[0038] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention. In the absence of conflict, the following embodiments and features in the embodiments can be combined with each other.

[0039] As described in the background art, the coating device has a coating die head, the coating die head has a mold cavity, and the coating die head is provided with a discharge portion and a feed port connected to the mold cavity, so that the slurry flows through the feed port, the mold cavity and the discharge portion in sequence.

[0040] The slurry is usually composed of active substances, conductive agents, binders and solvents. Its components are similar to suspensions and are easy to agglomerate, resulting in uneven distribution of the slurry and uneven pressure distribution in the cavity of the coating die.

[0041] Uneven pressure distribution in the mold cavity will lead to poor slurry coating effect and uneven thickness of the coated material layer, which will affect the electrochemical performance of the battery and may also cause local overheating, capacity decay and other problems. In addition, uneven coating thickness will also make subsequent processing steps more difficult, resulting in reduced production efficiency and increased production costs.

[0042] In order to overcome the defects in the prior art, the coating die head and coating equipment provided in the embodiments of the present application have a mold cavity, and a feed port, a discharge portion and a pressure regulating piece connected to the mold cavity are arranged on the coating die head. By opening the pressure regulating piece, the pressure regulating piece is connected to the mold cavity, and then when the pressure in the mold cavity exceeds the preset pressure range, the pressure regulating piece can be opened so that part of the slurry in the mold cavity can flow out through the pressure regulating piece, appropriately reducing the pressure in the mold cavity, and when the pressure in the mold cavity is less than the preset pressure range, the pressure regulating piece is closed so that the pressure in the mold cavity increases, thereby adjusting the pressure in the mold cavity, making it easier to make the pressure distribution in the mold cavity more uniform, the discharge more stable and uniform, and the slurry coating effect better.

[0043] The content of the present invention will be described in detail below in conjunction with the accompanying drawings so that those skilled in the art can understand the content of the present invention more clearly and in detail.

[0044] Reference Figures 1 to 4 As shown, the present application embodiment provides a coating die head, comprising:

[0045] The die body 100 has a die cavity 110, and is provided with a feed port 130, a discharge portion 120 and a pressure regulating member 140, and the feed port 130, the discharge portion 120 and the pressure regulating member 140 are all connected to the die cavity 110;

[0046] The pressure regulating member 140 is configured to be opened or closed when the pressure distribution of the mold cavity 110 is inconsistent, so as to adjust the pressure distribution of the mold cavity 110 .

[0047] It can be understood that the die body 100 includes an upper die 150 and a lower die 160, and the upper die 150 and the lower die 160 are assembled to form a mold cavity 110 between the upper die 150 and the lower die 160, and a gasket is sandwiched between the upper die 150 and the lower die 160, and the extension direction of the mold cavity 110 is consistent with the corresponding extension direction of the upper die 150 or the lower die 160. The upper die 150 and the lower die 160 form a slit structure on one side of the extension direction of the mold cavity 110, and the slit structure is connected to the mold cavity 110 as a discharge part 120 to facilitate uniform discharge.

[0048] The feed port 130 is disposed on the lower die head 160 and communicated with the mold cavity 110 , so that the slurry can enter the mold cavity 110 through the feed port 130 , and then be evenly coated on the substrate from the mold cavity 110 through the discharge portion 120 .

[0049] A pressure regulating member 140 is provided on the upper die head 150, and the pressure regulating member 140 is also connected to the mold cavity 110. Specifically, the pressure regulating member 140 can be set as a pressure regulating valve, a pressure relief valve or a solenoid valve. By using the pressure regulating member 140, when the local pressure of the slurry in the mold cavity 110 exceeds the preset pressure range, part of the slurry can be discharged through the pressure regulating member 140, so that the slurry pressure in the mold cavity 110 is reduced to within the preset pressure range. When the local pressure of the slurry in the mold cavity 110 does not meet the preset pressure range, the pressure regulating member 140 is in a closed state, so that the pressure in the mold cavity 110 is increased to the preset range, ensuring that the discharge portion 120 can smoothly flow out the slurry and ensure the slurry coating quality.

[0050] Therefore, the coating die head provided in the embodiment of the present application has a mold cavity 110 , and is provided with a feed port 130 , a discharge portion 120 and a pressure regulating member 140 which are connected to the mold cavity 110 .

[0051] In addition, by opening the pressure regulating member 140, the pressure regulating member 140 is connected to the mold cavity 110. When the pressure in the mold cavity 110 exceeds a preset pressure range, the pressure regulating member 140 can be opened so that part of the slurry in the mold cavity 110 can flow out through the pressure regulating member 140, thereby appropriately reducing the pressure in the mold cavity 110. When the pressure in the mold cavity 110 is less than the preset pressure range, the pressure regulating member 140 is closed so that the pressure in the mold cavity 110 increases, thereby adjusting the pressure in the mold cavity 110, making the pressure distribution in the mold cavity 110 more uniform, the discharge more stable and uniform, and the slurry coating effect better.

[0052] In some embodiments, reference Figures 1 to 4 As shown, the coating die provided in the embodiment of the present application also includes an adjusting component 200, which is connected to the pressure regulating component 140, and part of the adjusting component 200 is located in the mold cavity 110; the adjusting component 200 is configured to detect the pressure of the mold cavity 110, so as to control the pressure regulating component 140 to open when the pressure of the mold cavity 110 is greater than the preset pressure range, or to control the pressure regulating component 140 to close when the pressure of the mold cavity 110 is less than the preset pressure range.

[0053] By providing the adjustment component 200 , the pressure adjustment of the mold cavity 110 by the pressure regulating component 140 can be made more flexible and convenient, thereby further improving the slurry coating effect of the coating die head.

[0054] Among them, the regulating component 200 can be used to ensure that the slurry pressure in the mold cavity 110 is evenly distributed. Exemplarily, when the slurry enters the mold cavity 110, the regulating component 200 can be used to control the pressure regulating part 140 to open so that the slurry can smoothly enter the mold cavity 110, and the pressure regulating part 140 can be closed after the slurry fills the mold cavity 110. In the subsequent coating process, as the slurry is continuously added to the mold cavity 110, the slurry pressure in the mold cavity 110 may be unevenly distributed. At this time, when the regulating component 200 detects that the local slurry pressure is greater than the preset pressure range, the pressure regulating part 140 can be controlled to open and discharge part of the slurry to achieve a pressure relief effect, or when the regulating component 200 detects that the local slurry pressure is less than the preset pressure range, it can remain closed to compensate for the pressure in the mold cavity 110, so that the pressure in the mold cavity 110 quickly returns to the preset pressure range.

[0055] Furthermore, by using the adjustment component 200 to compensate or relieve the slurry pressure distribution in the mold cavity 110, the vibration and noise of the coating die during the slurry coating process can be reduced, the service life of the coating die can be extended, and the working efficiency of the coating die can be improved.

[0056] Or in some embodiments, the regulating assembly 200 may not be provided, and a mechanical pressure relief valve may be selected so that when the pressure in the mold cavity 110 is greater than a preset pressure value, the slurry can be discharged through the mechanical pressure relief valve at the pressure regulating member 140. This is lower in cost and easier to implement, and the present application does not impose any restrictions on this.

[0057] In some embodiments, reference Figures 1 to 5 As shown, the adjustment component 200 includes a control component and multiple detection components connected to the control component, and the detection components are arranged at intervals in the mold cavity 110. The control component is connected to the pressure regulating component 140. The detection components are used to detect the pressure at different positions of the mold cavity 110, and the control component is used to control the pressure regulating component 140 to be opened or closed.

[0058] Among them, in order to make the adjustment component 200 detect the pressure distribution in the mold cavity 110 more accurately, multiple detection components are provided, and the multiple detection components are arranged at intervals along the extension direction of the mold cavity 110, so that each detection component can detect the pressure at different positions in the mold cavity 110 respectively. The control component is connected to the pressure regulating component 140 to control the opening and closing of the pressure regulating component 140. In this regard, the detection component can be set as a pressure sensor, and the present application does not impose any restrictions on this.

[0059] In some embodiments, reference Figures 1 to 5 As shown, at least two pressure regulating members 140 are arranged at intervals on the die body 100 , and at least one detection member is arranged corresponding to the pressure regulating member 140 .

[0060] It can be understood that by arranging at least two pressure regulating components 140 at intervals along the extension direction of the die body 100, that is, at least two pressure regulating components 140 are arranged at intervals along the extension direction of the mold cavity 110, the corresponding pressure regulating components 140 can be controlled to be opened or closed according to the local abnormal position of the slurry pressure in the mold cavity 110, so that the pressure regulation of the mold cavity 110 can be more accurate and efficient.

[0061] Furthermore, such a configuration can make the control of the adjustment component 200 more automated, and the control component can be used to control the operation of the detection component and the pressure regulating component 140. In addition, the pressure distribution of the slurry in the mold cavity 110 can be detected in real time by the detection component, and then the filling speed and slurry temperature of the slurry can be adjusted in time according to the pressure distribution of the slurry in the mold cavity 110, so that the pressure distribution in the mold cavity 110 is uniform, and the slurry pressure in the mold cavity 110 can be maintained within a preset pressure range.

[0062] In some embodiments, reference Figure 4 As shown, the mold cavity 110 is provided with an arc surface 161, and a reverse arc segment 162 is provided on the side of the arc surface 161 facing the discharge portion 120. The reverse arc segment 162 is smoothly connected to the discharge portion 120, and the curvature of the reverse arc segment 162 is opposite to that of the arc surface 161.

[0063] With such a configuration, a smooth transition connection is formed between the mold cavity 110 and the discharge portion 120, that is, a relatively smooth and uniform flow path can be formed between the mold cavity 110 and the slit structure, so that the process of the slurry flowing from the mold cavity 110 to the discharge portion 120 is smoother and smoother, and the slurry agglomeration is reduced, so that the pressure distribution of the slurry in the mold cavity 110 is more uniform, and the local pressure of the die head is avoided to be too high or too low, so that the slurry coating is more uniform.

[0064] It can be understood that the lower die head 160 is provided with a concave arc surface 161 structure, so that the arc surface 161 and the upper die head 150 are assembled to form the mold cavity 110, and the arc surface 161 is used as the bottom of the mold cavity 110. In this way, the slurry can be accommodated in the mold cavity 110 structure formed by the arc surface 161, and since the surface of the arc surface 161 is relatively smooth and fluent, the slurry can flow smoothly in the mold cavity 110.

[0065] A reverse arc segment 162 is also provided on the side of the mold cavity 110 facing the discharge portion 120. The reverse arc segment 162 is also a curved surface structure, but the center of the arc of the reverse arc segment 162 is located outside the mold cavity 110, and the center of the curved surface 161 is located inside the mold cavity 110. The curvatures of the two are opposite, so that the curved surface 161 can smoothly transition with the surface of the lower die head 160, and then transitionally connect with the slit structure between the lower die head 160 and the upper die head 150, thereby effectively controlling the flow rate and pressure of the slurry entering the discharge portion 120.

[0066] Specifically, the radii of the arc surface 161 and the anti-arc segment 162 can be determined through simulation, and appropriate selection of the radii of the arc surface 161 and the anti-arc segment 162 can reduce the eddy current and turbulence of the slurry.

[0067] In some embodiments, reference Figures 4 to 7 As shown, the coating die provided in the embodiment of the present application also includes a material leveling component 300, which is arranged on the die body 100, and part of the material leveling component 300 is located in the mold cavity 110; the material leveling component 300 is configured so that the part located in the mold cavity 110 rotates relative to the mold cavity 110 to stir the slurry in the mold cavity 110.

[0068] It can be understood that the slurry itself has a high viscosity and is very easy to accumulate in the mold cavity 110, which not only affects the flow of the slurry itself, but also affects the uniformity of subsequent coating. Therefore, a material leveling component 300 can be provided to rotate the material leveling component 300 relative to the mold cavity 110 to stir the slurry, so as to ensure the flow state of the slurry, ensure the uniformity of mixing of the various components of the slurry, and prevent the accumulation of slurry.

[0069] Among them, refer to Figures 4 to 7As shown, the material sparging assembly 300 includes: at least one rotating member 310, the rotating member 310 is located in the mold cavity 110; and a driving member 320, the driving member 320 is disposed on the die body 100 and is magnetically connected to the rotating member 310 to drive the rotating member 310 to rotate through electromagnetic force.

[0070] It can be understood that a mounting groove is provided on the upper die head 150 for the installation of the driving member 320. The rotating member 310 is placed in the mold cavity 110 and is magnetically connected to the rotating member 310. Therefore, when the driving member 320 is running, the rotating member 310 can be driven to rotate in the mold cavity 110 by electromagnetic force. Based on the magnetic levitation technology, there is no direct contact between the rotating member 310 and the driving member 320, thereby avoiding wear of the rotating member 310 and ensuring the purity of the slurry.

[0071] In this regard, the rotating member 310 can be set as a ceramic rotor, so that the rotating member 310 has better wear resistance and corrosion resistance, and is convenient for the rotating member 310 to operate stably under high temperature and high pressure environment. The interior of the ceramic rotor is set as a hollow structure to fill the ceramic rotor with magnetic fluid, and the driving member 320 can be set as a magnetic suspension PCB control board, which is integrated with a magnetic suspension coil, has a compact structure and occupies a small space, so that the driving member 320 generates a magnetic field acting on the magnetic fluid in the rotating member 310, drives the rotating member 310 to rotate, and controls the rotation direction, rotation speed and rotation height of the rotating member 310. When the rotating member 310 rotates in the mold cavity 110, the rotating member 310 can drive the slurry to mix and shear together, increase the shear force between the slurries, so as to improve the fluidity of the slurry, and then control the flow path and flow speed of the slurry in the mold cavity 110, so as to achieve the effect of improving the coating stability of the coating die.

[0072] Such a configuration allows the driving member 320 to more accurately control the rotation speed and rotation direction of the rotating member 310, thereby improving the stability and reliability of the coating die head and reducing the vibration of the driving member 320 during the rotation of the rotating member 310. While preventing the rotating member 310 from generating magnetic substances, the magnetic substances in the slurry can also be adsorbed to a certain extent, thereby reducing the magnetic substances in the slurry.

[0073] In a specific implementation, in order to improve the uniformity of the stirring of the slurry by the rotating member 310, a plurality of rotating members 310 may be arranged in the mold cavity 110, and the plurality of rotating members 310 rotate simultaneously. Correspondingly, a driving member 320 may be arranged to drive the plurality of rotating members 310 to rotate together through electromagnetic force, or a plurality of driving members 320 may be arranged one by one corresponding to the rotating member 310 so that each driving member 320 controls each rotating member 310 individually. The present application does not impose any restrictions on this.

[0074] Further, in some embodiments, referring to Figures 4 to 6As shown, the material leveling assembly 300 further includes at least one support member 330 , the support member 330 is inserted into the mold cavity 110 , and the rotating members are sleeved on the support member 330 in a one-to-one correspondence.

[0075] It can be understood that the support member 330 is inserted into the mold cavity 110, and the rotating member 310 is sleeved on the support member 330. The support member 330 can be used to fix the relative position of the rotating member 310, so that the rotating member 310 always rotates around the support member 330 as the axis, thereby preventing the rotating member 310 from moving around and ensuring that the slurry in the mold cavity 110 is evenly distributed.

[0076] Furthermore, the structural dimensions of the support member 330 can be calculated by fluid mechanics according to the flow path and flow velocity of the slurry, so that the support member 330 can serve as a spoiler to effectively guide the flow direction of the slurry.

[0077] In some embodiments, reference Figures 1 to 4 As shown, the coating die provided in the embodiment of the present application also includes a temperature control component 400, which is disposed on the die body 100 and adjacent to the mold cavity 110; the temperature control component 400 is configured to detect the temperature of the mold cavity 110 and control the temperature of the mold cavity 110 within a preset temperature range.

[0078] It can be understood that a temperature control component 400 is arranged near the mold cavity 110. By raising or lowering the temperature of the temperature control component 400, the temperature control component 400 ensures uniform temperature in the mold cavity 110 through heat conduction, thereby avoiding changes in slurry viscosity caused by temperature gradients in the mold cavity 110.

[0079] The temperature control assembly 400 includes: a temperature measuring element, which is arranged corresponding to the mold cavity 110 to detect the temperature of the mold cavity 110; and a temperature control pipeline 410, which is arranged around at least part of the periphery of the mold cavity 110 to control the temperature of the mold cavity 110.

[0080] The temperature measuring element may be a temperature sensor, which is specifically arranged in the mold cavity 110 or outside the mold cavity 110 near the mold cavity 110, and the present application does not limit this. The temperature control pipeline 410 may be a heat exchange pipe such as a water pipe penetrating the lower die head 160 and adjacent to the mold cavity 110, and the temperature in the mold cavity 110 is ensured to be stable by circulating constant temperature water in the water pipe, or the temperature control pipeline 410 may be set as an electric heating pipe, and the present application does not limit this.

[0081] In addition, parameters such as the internal dimensions of the mold cavity 110, the size, number and distribution position of the rotating parts 310, the number and distribution position of the temperature control pipelines 410 can all be determined through simulation, and this application does not impose any restrictions on this.

[0082] Exemplarily, a water inlet 411 and a water outlet 412 are provided on one side of the temperature control pipeline 410. Constant temperature water can enter the temperature control pipeline 410 through the water inlet 411, circulate through the temperature control pipeline 410, and then flow out from the water outlet 412. The heat of the slurry in the mold cavity 110 can be transferred to the constant temperature water in the temperature control pipeline 410 through the lower die head 160, and heat is exchanged with the constant temperature water. The temperature in the mold cavity 110 is kept stable through the continuous circulation of the constant temperature water.

[0083] An embodiment of the present application also provides a coating device, including a device body and a coating die head in any of the above embodiments arranged on the device body.

[0084] The coating die head is described in detail in the above embodiments and will not be described in detail here.

[0085] The coating device provided in the embodiment of the present application has a coating die head having a die cavity 110, and is provided with a feed port 130, a discharge portion 120 and a pressure regulating member 140 which are connected to the die cavity 110. The die cavity 110 and the discharge portion 120 are smoothly connected, so that the flow path of the slurry in the die cavity 110 is relatively smooth and uniform. When the slurry flows to the discharge portion 120, it is convenient to make the slurry at each position of the discharge portion 120 more evenly distributed, and avoid the local pressure of the die head being too high or too low, so that the slurry coating is more uniform. In addition, by opening the pressure regulating member 140, the pressure regulating member 140 is connected to the mold cavity 110. When the pressure in the mold cavity 110 exceeds a preset pressure range, the pressure regulating member 140 can be opened so that part of the slurry in the mold cavity 110 can flow out through the pressure regulating member 140, thereby appropriately reducing the pressure in the mold cavity 110. When the pressure in the mold cavity 110 is less than the preset pressure range, the pressure regulating member 140 is closed so that the pressure in the mold cavity 110 increases, thereby adjusting the pressure in the mold cavity 110, making the pressure distribution in the mold cavity 110 more uniform, the discharge more stable and uniform, and the slurry coating effect better.

[0086] It should be noted that the phrases "one embodiment", "an embodiment", "an exemplary embodiment", "some embodiments", etc. mentioned in the specification indicate that the described embodiments may include certain features, structures or characteristics, but not every embodiment may include the certain features, structures or characteristics. In addition, such phrases do not necessarily refer to the same embodiment. In addition, when describing certain features, structures or characteristics in conjunction with an embodiment, it is within the knowledge of those skilled in the art to implement such features, structures or characteristics in conjunction with other embodiments, whether explicitly or not explicitly described.

[0087] In general, terms should be understood, at least in part, by the context in which they are used. For example, the term "one or more" as used herein may be used to describe any feature, structure, or characteristic in a singular sense, or may be used to describe a combination of features, structures, or characteristics in a plural sense, depending, at least in part, on the context. Similarly, terms such as "a," "an," or "the" may also be understood to convey singular usage or to convey plural usage, depending, at least in part, on the context.

[0088] It should be easily understood that “on,” “above,” and “over” in this application should be interpreted in the broadest manner, so that “on” not only means “directly on something,” but also includes the meaning of “on something” with intervening features or layers therebetween, and “above” or “over” not only includes the meaning of “above something” or “over,” but also may include the meaning of “above something” or “over” with no intervening features or layers therebetween.

[0089] In addition, spatially relative terms, such as "below," "below," "below," "above," "above," etc., may be used herein for ease of description to describe the relationship of one element or feature relative to other elements or features as shown in the figures. Spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation shown in the figures. The device may have other orientations, and the spatially relative descriptors used herein may likewise be interpreted accordingly.

[0090] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A coating die head, characterized in that: include: A die body (100), the die body (100) being provided with a die cavity (110), the die body (100) being provided with a feed port (130), a discharge portion (120) and a pressure regulating member (140), the feed port (130), the discharge portion (120) and the pressure regulating member (140) being all in communication with the die cavity (110); The pressure regulating member (140) is configured to be opened or closed when the pressure distribution of the mold cavity (110) is inconsistent, so as to adjust the pressure distribution of the mold cavity (110).

2. The coating die head according to claim 1, characterized in that: It also comprises an adjustment component (200), the adjustment component (200) being connected to the pressure regulating member (140), and a portion of the adjustment component (200) being located in the mold cavity (110); The regulating component (200) is configured to detect the pressure of the mold cavity (110) so as to control the pressure regulating component (140) to open when the pressure of the mold cavity (110) is greater than a preset pressure range, or to control the pressure regulating component (140) to close when the pressure of the mold cavity (110) is less than the preset pressure range.

3. The coating die head according to claim 2, characterized in that: The regulating component (200) comprises a control component and a plurality of detection components connected to the control component, wherein the detection components are arranged at intervals in the mold cavity (110), the control component is connected to the pressure regulating component (140), the detection components are respectively used to detect the pressure at different positions of the mold cavity (110), and the control component is used to control the pressure regulating component (140) to be opened or closed.

4. The coating die head according to claim 3, characterized in that: At least two of the pressure regulating components (140) are arranged at intervals on the die body (100), and at least one of the detection components is arranged corresponding to the pressure regulating component (140).

5. The coating die head according to claim 1, characterized in that: The mold cavity (110) is provided with a curved surface (161), and a reverse arc segment (162) is provided on a side of the curved surface (161) facing the discharge portion (120), the reverse arc segment (162) is smoothly connected to the discharge portion (120), and the curvature of the reverse arc segment (162) is opposite to that of the curved surface (161).

6. The coating die head according to any one of claims 1 to 5, characterized in that: It also includes a material leveling component (300), wherein the material leveling component (300) is arranged on the die head body (100), and a portion of the material leveling component (300) is located in the die cavity (110); The material mixing assembly (300) is configured such that a portion located in the mold cavity (110) rotates relative to the mold cavity (110) to stir the slurry in the mold cavity (110).

7. The coating die head according to claim 6, characterized in that: The screed assembly (300) comprises: at least one rotating member (310), the rotating member (310) being located in the mold cavity (110); A driving member (320) is disposed on the die head body (100) and is magnetically connected to the rotating member (310) so as to drive the rotating member (310) to rotate through electromagnetic force.

8. The coating die head according to claim 7, characterized in that: The material leveling assembly (300) further comprises at least one supporting member (330), wherein the supporting member (330) is inserted into the mold cavity (110), and the rotating members (310) are sleeved on the supporting members (330) in a one-to-one correspondence.

9. The coating die head according to any one of claims 1 to 5, characterized in that: It also includes a temperature control component (400), wherein the temperature control component (400) is arranged on the die body (100) and is adjacent to the die cavity (110); The temperature control component (400) is configured to detect the temperature of the mold cavity (110) and control the temperature of the mold cavity (110) within a preset temperature range.

10. A coating device, characterized in that: The invention comprises an equipment body and a coating die head as described in any one of claims 1 to 9 arranged on the equipment body.

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