Coating die and coating equipment

Abstract

The present invention provides a coating die and coating equipment, belonging to the field of battery manufacturing technology. The coating die comprises a die body, a die cavity, a feed port, a discharge port, and a pressure regulator, all of which are connected to the die cavity. The pressure regulator is configured to open or close to adjust the cavity pressure distribution when the cavity pressure distribution is inconsistent. This ensures a more uniform pressure distribution within the cavity, smoother discharge, and better slurry coating.

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, which has a mold cavity and 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 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 existing coating dies.

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

[0007] A die body, wherein the die body defines a die cavity, and is provided with a feed port, a discharge port, and a pressure regulating member, wherein the feed port, the discharge port, and the pressure regulating member are all in communication with 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 one possible implementation, the coating die provided in the embodiment of the present application further includes an adjustment component, wherein 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 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 one possible embodiment, the coating die provided in the embodiment of the present application, the adjustment component includes a control part and a plurality of detection parts connected to the control part, each of the detection parts is arranged at intervals in the mold cavity, the control part is connected to the pressure regulating part, the detection parts are used to detect the pressure at different positions of the mold cavity respectively, and the control part is used to control the pressure regulating part 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 spaced apart on the die body, and at least one detection component is disposed corresponding to the pressure regulating component.

[0013] In one possible embodiment, the coating die head provided in the embodiment of the present application, the mold cavity is provided with a curved surface, the curved surface is provided with a reverse arc segment on the side 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 embodiment, the coating die provided in the embodiment of the present application further includes a material screed assembly, wherein the material screed assembly is disposed on the die body, and a portion of the material screed assembly is located within the die cavity;

[0015] The slurry distributing 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 one possible embodiment, the coating die head provided in the embodiment of the present application, the screed assembly includes:

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

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

[0019] In a possible embodiment, 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 embodiment, 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 embodiments of the present application have a die cavity, and are provided with a feed port, a discharge portion, and a pressure regulating member connected to the die cavity. By providing the pressure regulating member, the pressure regulating member is connected to the die cavity, and when the pressure in the die cavity exceeds a preset pressure range, the pressure regulating member can be opened so that part of the slurry in the die cavity can flow out through the pressure regulating member, appropriately reducing the pressure in the die cavity. When the pressure in the die cavity is less than the preset pressure range, the pressure regulating member is closed so that the pressure in the die cavity increases, thereby achieving regulation of the pressure in the die cavity, making the pressure distribution in the die cavity more uniform, discharging more stable and uniform, and achieving a better slurry coating effect. 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 structural diagram of a coating die head provided in an embodiment of the present application;

[0026] Figure 2 for Figure 1 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 cross-sectional 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 - discharge portion; 130 - feed port; 140 - pressure regulating member; 150 - upper die; 160 - lower die; 161 - arc surface; 162 - anti-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 illustrate specific embodiments of the present application, which will be described in more detail below. These drawings and the textual description are not intended to limit the scope of the present application in any way, but rather to illustrate the concepts of the present application to those skilled in the art by reference to specific embodiments. DETAILED DESCRIPTION

[0038] To make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions 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 making creative work are within the scope of protection of the present invention. The following embodiments and features in the embodiments can be combined with each other unless there is a conflict.

[0039] As described in the background art, the coating equipment has a coating die head, which has a mold cavity and 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 within the mold cavity can lead to poor slurry coating and uneven coating thickness, which in turn affects the battery's electrochemical performance and may also cause problems such as localized overheating and capacity decay. Furthermore, uneven coating thickness can 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 and coating equipment provided in the embodiments of the present application have a die cavity, and are provided with a feed port, a discharge portion and a pressure regulating member connected to the die cavity. By providing a pressure regulating member, the pressure regulating member is connected to the die cavity, and then when the pressure in the die cavity exceeds a preset pressure range, the pressure regulating member can be opened so that part of the slurry in the die cavity can flow out through the pressure regulating member, appropriately reducing the pressure in the die cavity. When the pressure in the die cavity is less than the preset pressure range, the pressure regulating member is closed so that the pressure in the die cavity increases, thereby achieving regulation of the pressure in the die cavity, making the pressure distribution in the die cavity more uniform, discharging more stable and uniform, and achieving a better slurry coating effect.

[0043] The content of the present invention will be described in detail below with reference to 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 embodiment of the present application provides a coating die head, comprising:

[0045] The die body 100 defines a die cavity 110 , and is 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 are all in communication with the die cavity 110 ;

[0046] The pressure regulating member 140 is configured to be opened or closed when the pressure distribution in the mold cavity 110 is inconsistent, so as to adjust the pressure distribution in 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 die 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. The extension direction of the die 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 die cavity 110, and the slit structure is connected to the die cavity 110 as a discharge part 120 to facilitate uniform discharge.

[0048] The feed port 130 is provided on the lower die head 160 and communicates 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 is also in communication with the die cavity 110. Specifically, the pressure regulating member 140 can be configured as a pressure regulating valve, a pressure relief valve, or a solenoid valve. Utilizing the pressure regulating member 140, when the local pressure of the slurry in the die cavity 110 exceeds a preset pressure range, a portion of the slurry can be discharged through the pressure regulating member 140, thereby reducing the slurry pressure in the die cavity 110 to within the preset pressure range. Furthermore, when the local pressure of the slurry in the die cavity 110 does not meet the preset pressure range, the pressure regulating member 140 is closed, thereby increasing the pressure in the die cavity 110 to within the preset range, thereby ensuring that the slurry can flow out of the discharge portion 120 smoothly and that the slurry coating quality is guaranteed.

[0050] Therefore, the coating die 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 communicating with the mold cavity 110 .

[0051] In addition, by opening the pressure regulating piece 140, the pressure regulating piece 140 is connected to the mold cavity 110. When the pressure in the mold cavity 110 exceeds the preset pressure range, the pressure regulating piece 140 can be opened so that part of the slurry in the mold cavity 110 can flow out through the pressure regulating piece 140, thereby appropriately reducing the pressure in the mold cavity 110. When the pressure in the mold cavity 110 is lower than the preset pressure range, the pressure regulating piece 140 is closed so that the pressure in the mold cavity 110 increases, thereby achieving the adjustment of 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 further 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 assembly 200 , the pressure adjustment of the mold cavity 110 by the pressure regulating member 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. For example, 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, it can control the pressure regulating part 140 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, thereby extending the service life of the coating die and improving the working efficiency of the coating die.

[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 this 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. 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 respectively, and the control component is used to control the pressure regulating component 140 to open or close.

[0058] Among them, in order to make the adjustment component 200 detect the pressure distribution in the mold cavity 110 more accurately, multiple detection parts are provided, and the multiple detection parts are arranged at intervals along the extension direction of the mold cavity 110, so that each detection part can detect the pressure at different positions in the mold cavity 110 respectively. The control part is connected to the pressure regulating part 140 to control the opening and closing of the pressure regulating part 140. In this regard, the detection part can be set as a pressure sensor, and this 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 parts 140 at intervals along the extension direction of the die body 100, that is, at least two pressure regulating parts 140 are arranged at intervals along the extension direction of the mold cavity 110, the corresponding pressure regulating parts 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 is more accurate and efficient.

[0061] Furthermore, this arrangement allows for a higher degree of automation in the control of the adjustment assembly 200, utilizing the control element to control the operation of the detection element and the pressure regulating element 140. Furthermore, the detection element can also be used to detect the pressure distribution of the slurry within the mold cavity 110 in real time, and then, based on the pressure distribution of the slurry within the mold cavity 110, the slurry injection speed and slurry temperature can be adjusted in a timely manner to ensure a uniform pressure distribution within the mold cavity 110 and maintain the slurry pressure within the mold cavity 110 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 part 120. The reverse arc segment 162 is smoothly connected to the discharge part 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, avoiding excessively high or too low local pressure on the die head, so that the slurry coating is more uniform.

[0064] It is understood that the lower die head 160 is provided with a recessed arcuate surface 161 so that the arcuate surface 161 and the upper die head 150 can be assembled to form the mold cavity 110, and the arcuate surface 161 serves 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 arcuate surface 161. Since the surface of the arcuate surface 161 is relatively smooth and fluent, the slurry can flow smoothly in the mold cavity 110.

[0065] A reverse arc section 162 is also provided on the side of the mold cavity 110 facing the discharge part 120. The reverse arc section 162 is also a curved surface structure, but the center of the arc of the reverse arc section 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 transition to 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 part 120.

[0066] Specifically, the radii of the curved surface 161 and the anti-arc segment 162 can be determined through simulation. Appropriate selection of the radii of the curved surface 161 and the anti-arc segment 162 can reduce eddy currents and turbulences 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, promote the slurry to maintain a flowing state, and ensure the uniformity of mixing of the various components of the slurry to prevent slurry accumulation.

[0069] Among them, reference 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 by 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] To this end, the rotating member 310 can be configured as a ceramic rotor to improve the wear resistance and corrosion resistance of the rotating member 310, thereby facilitating the stable operation of the rotating member 310 in a high-temperature and high-pressure environment. The interior of the ceramic rotor is configured as a hollow structure to be filled with a magnetic fluid, and the driving member 320 can be configured as a magnetic suspension PCB control board, which integrates a magnetic suspension coil and has a compact structure and occupies a small space. In this way, the driving member 320 generates a magnetic field that acts 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, thereby improving the fluidity of the slurry, and further controlling the flow path and flow speed of the slurry in the mold cavity 110, thereby achieving the effect of improving the coating stability of the coating die.

[0072] Such a setting allows the driving member 320 to more accurately control the rotation speed and rotation direction of the rotating member 310, improve the stability and reliability of the coating die head, and reduce 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, it can also adsorb the magnetic substances in the slurry to a certain extent, thereby reducing the magnetic substances in the slurry.

[0073] During specific implementation, in order to improve the uniformity of the stirring of the slurry by the rotating member 310, multiple rotating members 310 can be arranged in the mold cavity 110, and the multiple rotating members 310 rotate simultaneously. Correspondingly, a driving member 320 can be set to simultaneously drive the multiple rotating members 310 to rotate together through electromagnetic force, or multiple driving members 320 can be arranged one-to-one with respect to the rotating member 310, so that each driving member 320 controls each rotating member 310 separately. This 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 with the support member 330 as the axis, thereby preventing the rotating member 310 from running 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 through 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 arranged 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 set 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 circumference of the mold cavity 110 to control the temperature of the mold cavity 110.

[0080] The temperature measuring element can be a temperature sensor, specifically disposed within mold cavity 110 or outside mold cavity 110 adjacent to mold cavity 110, and this application does not impose any restrictions thereon. The temperature control pipe 410 can be a heat exchange pipe, such as a water pipe, disposed within lower die head 160 adjacent to mold cavity 110, to maintain a stable temperature within mold cavity 110 by circulating constant-temperature water within the water pipe. Alternatively, the temperature control pipe 410 can be an electrically heated pipe, and this application does not impose any restrictions thereon.

[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] Illustratively, 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 mold head 160, and exchange heat 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 further provides a coating device, comprising a device body and a coating die head according to 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 in communication with the die cavity 110. The die cavity 110 and the discharge portion 120 are smoothly connected, thereby making the flow path of the slurry in the die cavity 110 relatively smooth and uniform. When the slurry flows to the discharge portion 120, the slurry is distributed relatively evenly at various positions of the discharge portion 120, avoiding excessively high or low local pressure in the die head, thereby ensuring relatively uniform slurry coating. In addition, by opening the pressure regulating piece 140, the pressure regulating piece 140 is connected to the mold cavity 110. When the pressure in the mold cavity 110 exceeds the preset pressure range, the pressure regulating piece 140 can be opened so that part of the slurry in the mold cavity 110 can flow out through the pressure regulating piece 140, thereby appropriately reducing the pressure in the mold cavity 110. When the pressure in the mold cavity 110 is lower than the preset pressure range, the pressure regulating piece 140 is closed so that the pressure in the mold cavity 110 increases, thereby achieving the adjustment of 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 references in this specification to "one embodiment," "an embodiment," "an exemplary embodiment," "some embodiments," and the like indicate that the described embodiment may include a particular feature, structure, or characteristic, but not necessarily every embodiment includes that particular feature, structure, or characteristic. Furthermore, such phrases do not necessarily refer to the same embodiment. Furthermore, when a particular feature, structure, or characteristic is described in conjunction with an embodiment, it is within the knowledge of those skilled in the art to implement such feature, structure, or characteristic in conjunction with other embodiments, whether explicitly described or not.

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

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

[0089] Additionally, spatially relative terms, such as "below," "beneath," "beneath," "above," and the like, 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 depicted in the figures. The device may have other orientations, and the spatially relative descriptors used herein should 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 above embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the above 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) defines a die cavity (110), the die body (100) is 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) all being 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); It also includes an adjustment component (200), the adjustment component (200) is connected to the pressure regulating member (140), and a portion of the adjustment component (200) is located in the mold cavity (110); The regulating assembly (200) is configured to detect the pressure of the mold cavity (110) so as to control the pressure regulating member (140) to open when the pressure of the mold cavity (110) is greater than a preset pressure range, or to control the pressure regulating member (140) to close when the pressure of the mold cavity (110) is less than the preset pressure range; The mold cavity (110) is provided with a curved surface (161), and a reverse arc segment (162) is provided on the 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).

2. The coating die head according to claim 1, characterized in that The regulating assembly (200) comprises a control member and a plurality of detection members connected to the control member, wherein the detection members are arranged at intervals in the mold cavity (110), the control member is connected to the pressure regulating member (140), the detection members are respectively used to detect the pressure at different positions of the mold cavity (110), and the control member is used to control the opening or closing of the pressure regulating member (140).

3. The coating die head according to claim 2, characterized in that At least two of the pressure regulating parts (140) are arranged at intervals on the die body (100), and at least one of the detection parts is arranged corresponding to the pressure regulating part (140).

4. The coating die according to any one of claims 1 to 3, characterized in that: It also includes a material leveling component (300), 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 leveling 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).

5. The coating die head according to claim 4, 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 provided on the die head body (100) and is magnetically connected to the rotating member (310) to drive the rotating member (310) to rotate through electromagnetic force.

6. The coating die head according to claim 5, characterized in that The material leveling assembly (300) further comprises at least one support member (330), wherein the support member (330) is inserted into the mold cavity (110), and the rotating members (310) are sleeved on the support member (330) in a one-to-one correspondence.

7. The coating die according to any one of claims 1 to 3, 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.

8. A coating device, characterized in that: The device comprises an equipment body and a coating die head as described in any one of claims 1 to 7 arranged on the equipment body.

Images