Film forming device and pole piece production equipment

Abstract

The utility model provides a film forming device and pole piece production equipment, the film forming device comprises a film forming assembly, a feeding assembly and a first vibration piece, the film forming assembly comprises a shell and two rollers, the shell is provided with a feeding port and a discharging port, the two rollers are arranged at the discharging port, and the two rollers can rotate relative to the shell; the two rollers are arranged in the first horizontal direction, an extrusion seam is formed between the two rollers and can extrude powder into a film, and the first horizontal direction is perpendicular to the extending direction of the rollers; the feeding assembly is arranged opposite to the feeding port so as to convey powder to the extrusion seam. The first vibration part is arranged in the shell and located above the extrusion seam, and the first vibration part can vibrate relative to the shell so as to scatter the powder stacked above the extrusion seam, so that the same amount of powder evenly enters the extrusion seam to be extruded into a film, the thickness uniformity of the film is guaranteed, and the overall quality of the formed film is improved.

Description

Technical Field

[0001] This application relates to the field of battery manufacturing technology, and in particular to a film-forming apparatus and electrode production equipment. Background Technology

[0002] Dry electrode technology is increasingly used in the manufacture of lithium batteries. In existing technologies, dry electrode powder is usually rolled into a film by rolling, and then combined with current collector to form an electrode sheet. During the film manufacturing process, when the powder has poor flowability or the roller speed is too fast, the powder may accumulate in the roller gap and cannot fall off, which will cause the film to have regional defects, affecting the uniformity of film thickness and film quality. Utility Model Content

[0003] This application discloses a film-forming apparatus and electrode production equipment, which can improve the uniformity of film thickness and film quality.

[0004] To achieve the above objectives, this application discloses a film-forming apparatus. ， A film-forming assembly includes a housing and two rollers. The housing has an inlet and an outlet. The two rollers are disposed at the outlet and are rotatable relative to the housing. The two rollers are arranged along a first horizontal direction and an extrusion slit is formed between the two rollers. The extrusion slit is capable of extruding powder into a film. The first horizontal direction is perpendicular to the extension direction of the rollers.

[0005] A feeding assembly is disposed opposite to the feed inlet to deliver the powder into the extrusion seam;

[0006] A first vibrating element is disposed inside the housing and located above the extrusion seam. The first vibrating element is capable of vibrating relative to the housing to disperse the powder accumulated above the extrusion seam.

[0007] Optionally, along the extending direction of the roll 120, the housing has opposing first and second sidewalls;

[0008] The first vibrating element is a vibrating rod disposed inside the housing 110. The extension direction of the vibrating rod is parallel to the extension direction of the roller 120, and one end of the vibrating rod is connected to the first side wall of the housing 110, and the other end is close to the second side wall and has a gap with the second side wall.

[0009] Optionally, the vibrating rod is connected between the first sidewalls by an adjustable connection structure, so that the installation position of the vibrating rod on the first sidewall is adjustable in the vertical direction.

[0010] Optionally, the adjustable connection structure includes a fastener and an adjustment groove disposed on the first sidewall, the adjustment groove extending along the vertical direction, and the fastener being used to fix the vibrating rod in the adjustment groove.

[0011] Optionally, the vibrating rod is a cylindrical vibrating rod or a prismatic vibrating rod.

[0012] Optionally, the feeding assembly includes a trough and a second vibrating element. The trough is used to store the powder, and the outlet of the trough faces the extrusion gap. The second vibrating element is connected to the trough and can drive the bottom of the trough to vibrate, so that the powder in the trough moves towards the outlet under the action of vibration, so that the powder can enter the extrusion gap through the outlet.

[0013] Optionally, the second vibrating element is connected to the end of the trough away from the discharge port.

[0014] Optionally, the second vibrating element is an electromagnetic vibrator.

[0015] Optionally, the film-forming device further includes a control module and a detection element electrically connected to the control module. The detection element is disposed inside the housing 110 and near the top of the housing 110. The detection element is used to detect the height of powder accumulated at the extrusion seam.

[0016] The control module is electrically connected to the second vibrating element, and the control module is used to control the vibration frequency of the second vibrating element according to the height of powder accumulated at the extrusion seam detected by the detection element.

[0017] This application also discloses an electrode production apparatus, which includes the above-described film-forming device.

[0018] Compared with the prior art, the beneficial effects of this application are as follows:

[0019] During film formation, the powder moves towards the extrusion slit under gravity and other forces, easily accumulating above the slit. The first vibrator continuously disrupts this accumulation, keeping the powder loose and preventing large amounts of powder from gathering together. This ensures a continuous and uniform supply of powder to the extrusion slit, maintaining the stability of the film formation process. The force generated by the vibration overcomes the internal friction between the powder particles and the friction between the powder and the shell, providing additional power to the powder, making it easier to flow and move smoothly towards the extrusion slit. This prevents the powder from stagnating inside the shell, ensuring the smooth progress of the entire film formation process. Furthermore, if the powder accumulation above the extrusion slit is uneven, the amount of powder entering the slit will be unstable, resulting in inconsistent film thickness. The first vibrator disperses and evenly distributes the powder, allowing equal amounts of powder to enter the extrusion slit and be extruded into a film, thus ensuring the uniformity of film thickness and improving the overall quality of the film. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of this application, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1 This is a schematic diagram of a film-forming apparatus provided in an embodiment of this application;

[0022] Figure 2 This is a schematic diagram of powder accumulation provided in an embodiment of this application;

[0023] Figure 3 This is a schematic diagram of the first vibrating element dispersing powder according to an embodiment of this application;

[0024] Figure 4 This is a top view of the film-forming apparatus provided in the embodiments of this application;

[0025] Figure 5 This is a rear view of a film-forming apparatus provided in an embodiment of this application.

[0026] Explanation of main figure symbols

[0027] 1-Film forming apparatus;

[0028] 100 - Film forming assembly; 110 - Housing; 1101 - Inlet; 1102 - Outlet; 1103 - First sidewall; 1104 - Second sidewall; 120 - Roll;

[0029] 200 - Feeding assembly; 210 - Feed trough; 220 - Second vibrating element;

[0030] 300 - First vibrating element;

[0031] 400 - Adjustable connection structure;

[0032] 500 - Inspection Items. Detailed Implementation

[0033] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0034] In this application, the terms "upper," "lower," "left," "right," "front," "rear," "top," "bottom," "inner," "outer," "middle," "vertical," "horizontal," "lateral," and "longitudinal" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. These terms are primarily for the purpose of better describing this application and its embodiments, and are not intended to limit the indicated device, element, or component to having a specific orientation, or to be constructed and operated in a specific orientation.

[0035] Furthermore, in addition to indicating location or positional relationship, some of the aforementioned terms may also have other meanings. For example, the term "above" may also be used in some cases to indicate a certain dependency or connection relationship. Those skilled in the art can understand the specific meaning of these terms in this application based on the specific circumstances.

[0036] Furthermore, the terms "installation," "setup," "equipped with," "connection," and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral structure; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium, or an internal connection between two devices, components, or parts. Those skilled in the art can understand the specific meaning of these terms in this application based on the specific circumstances.

[0037] Furthermore, the terms "first," "second," etc., are primarily used to distinguish different devices, elements, or components whose specific types and structures may be the same or different, and are not intended to indicate or imply the relative importance or quantity of the indicated devices, elements, or components. Unless otherwise stated, "a plurality of" means two or more.

[0038] As mentioned in the background section, during the production of the membrane, when the powder has poor flowability or the roller speed is too fast, the powder may accumulate in the roller gap and cannot fall off, which will cause the membrane to have regional defects, affecting the uniformity of the membrane thickness and the quality of the membrane.

[0039] To address the aforementioned issues, this application provides a film-forming apparatus and an electrode production equipment. The film-forming apparatus uses vibration to disperse the powder accumulated above the extrusion seam, making the powder loose and preventing it from clumping. This prepares the powder for uniform entry into the extrusion seam later. Under the combined action of gravity and vibration, the dispersed powder uniformly enters the extrusion seam between the two rollers, thereby ensuring the uniformity of the film thickness and improving the overall quality of the film.

[0040] The technical solutions of the film-forming apparatus and electrode production equipment of this application will be further described below with reference to specific embodiments and accompanying drawings.

[0041] See Figures 1 to 4 This embodiment provides a film-forming device 1, which includes a film-forming component 100, a feeding component 200, and a first vibrating element 300. The film-forming component 100 includes a housing 110 and two rollers 120. The housing 110 has an inlet 1101 and an outlet 1102. The two rollers 120 are disposed at the outlet 1102 and are rotatable relative to the housing 110. The two rollers 120 are arranged along a first horizontal direction, and an extrusion slit is formed between the two rollers 120. The extrusion slit can extrude powder into a film. The first horizontal direction is perpendicular to the extension direction of the rollers 120. The feeding component 200 is disposed opposite to the inlet 1101 to convey powder to the extrusion slit. The first vibrating element 300 is disposed inside the housing 110 and located above the extrusion slit. The first vibrating element 300 can vibrate relative to the housing 110 to disperse the powder accumulated above the extrusion slit.

[0042] Among them, the first horizontal direction is Figure 4 The direction indicated by the middle arrow X.

[0043] During the process of extruding powder into a film, the feeding assembly 200 conveys the powder to the inlet 1101 of the housing 110. The feeding assembly 200 can be a screw feeder, belt conveyor, or other equipment. After the powder enters the housing 110 through the inlet 1101, it will accumulate above the extrusion gap due to gravity. At this time, the first vibrating element 300 starts to work. The first vibrating element 300 can be a vibrating motor, electromagnetic vibrator, etc. Through its own vibration, it disperses the powder accumulated above the extrusion gap. The vibration wave generated by the first vibrating element 300 propagates in the powder, causing changes in the interaction force between the powder particles, destroying the powder's accumulation structure, making the powder loose, preventing powder agglomeration, and preparing for subsequent uniform entry into the extrusion gap. Under the combined action of gravity and vibration, the dispersed powder enters the extrusion gap between the two rollers 120 evenly. As the rollers 120 rotate, the powder is squeezed by the two rollers 120 in the extrusion gap, gradually being compacted and forming a continuous film structure.

[0044] During the film formation process, the powder moves towards the extrusion slit under gravity and other forces, easily accumulating above the slit. The first vibrating element 300 continuously disrupts this accumulation, keeping the powder loose and preventing large amounts of powder from gathering together. This ensures a continuous and uniform supply of powder to the extrusion slit, maintaining the stability of the film formation process. The force generated by the vibration overcomes the internal friction between the powder particles and the friction between the powder and the housing 110, providing additional power to the powder, making it easier to flow and move smoothly towards the extrusion slit. This prevents the powder from stagnating within the housing 110, ensuring the smooth progress of the entire film formation process. Furthermore, if the powder accumulation above the extrusion slit is uneven, the amount of powder entering the slit will be unstable, resulting in inconsistent film thickness. The first vibrating element 300 disperses and evenly distributes the powder, allowing equal amounts of powder to enter the extrusion slit and be extruded into a film, thereby ensuring film thickness uniformity and improving the overall quality of the film formation.

[0045] In one possible embodiment, see Figure 4 Along the extending direction of the roll 120, the housing 110 has a first sidewall 1103 and a second sidewall 1104. The first vibrating member 300 is a vibrating rod disposed in the housing 110. The extending direction of the vibrating rod is parallel to the extending direction of the roll 120, and one end of the vibrating rod is connected to the first sidewall 1103 of the housing 110, and the other end is close to the second sidewall 1104 and has a gap with the second sidewall 1104.

[0046] The vibrating rod extends parallel to the roller 120, allowing vibration to be evenly transmitted to the powder inside the housing 110 along the extension direction of the roller 120. Compared to other non-parallel arrangements, this method can more comprehensively and evenly act on the powder, avoiding insufficient vibration and clumping in some areas. It ensures that the powder entering the extrusion gap maintains a good loose state throughout its width, which is beneficial for improving the uniformity of film formation. Furthermore, one end of the vibrating rod is connected to the first sidewall 1103, which can effectively transmit vibration from the sidewall to the entire space of the housing 110. Since its extension direction is consistent with the roller 120, it can better utilize the space of the housing 110, allowing vibration energy to propagate further and more evenly in the powder, reducing vibration energy loss, enhancing the powder dispersing effect, and further ensuring the uniformity and stability of powder supply.

[0047] In addition, the installation method in which one end of the vibrator is connected to the first sidewall 1103 and the other end is close to the second sidewall 1104 with a preset gap is more convenient during installation. The construction personnel can first fix one end of the vibrator to the first sidewall 1103 and then adjust its position so that the other end maintains a suitable gap with the second sidewall 1104. This installation method does not require complicated operations inside the housing 110, reducing the installation difficulty. Moreover, the gap between the vibrator and the second sidewall 1104 avoids rigid collision between the vibrator and the second sidewall 1104 during operation, ensuring that there is a certain buffer space between the vibrator and the second sidewall 1104, which improves the safety and stability of the film formation process.

[0048] In one possible embodiment, see Figure 4 and Figure 5 The vibrating rods are connected between the first sidewalls 1103 by an adjustable connection structure 400, so that the installation position of the vibrating rods on the first sidewalls 1103 is adjustable in the vertical direction.

[0049] Because different types of powders have different physical properties, such as particle size, density, and flowability, for powders with larger particle size, higher density, or poorer flowability, it may be necessary to lower the position of the vibrator to bring it closer to the powder in order to enhance the vibration effect and better disperse the powder. Therefore, by adjusting the vertical position, the optimal vibration point can be found according to the specific characteristics of the powder, ensuring that the ideal dispersion effect can be achieved for various powders.

[0050] Furthermore, during the film formation process, the height of the powder accumulation above the extrusion seam varies with factors such as the feeding speed and film formation speed. When the powder accumulation height is high, lowering the vibrator can more effectively transmit the vibration to the accumulated powder, preventing the powder from accumulating and compacting at high points. When the powder accumulation height is low, raising the vibrator can ensure that the vibrator still has sufficient force on the powder, allowing the powder to flow evenly towards the extrusion seam, thereby maintaining a stable film formation process.

[0051] In one possible embodiment, the adjustable connection structure 400 includes a fastener and an adjustment groove disposed on the first sidewall 1103, the adjustment groove extending in a vertical direction, and the fastener being used to fix the vibrator in the adjustment groove.

[0052] The adjustment groove extends vertically, providing a clear path and range for adjusting the position of the vibrator. Operators can easily move the vibrator up and down within the adjustment groove after loosening the fasteners, quickly adjusting it to the desired height. This allows for precise adjustment of the vibrator's position to adapt to different powder characteristics, stacking heights, and production process requirements. Compared to some adjustment methods that require multiple tools or complex disassembly and assembly, this structure only requires operating the fasteners to fix and adjust the vibrator. The fasteners can be bolts, nuts, or other components, and can be operated with ordinary tools such as wrenches, requiring no specialized equipment or complex techniques. This significantly reduces the difficulty and workload of adjustment, improving operational convenience.

[0053] Furthermore, the fasteners can firmly fix the vibrator in the adjustment groove, ensuring that the vibrator will not loosen or shift due to external forces such as vibration during the operation of the film forming device 1, so as to ensure that the vibrator always works stably in the set position, maintains a stable vibration effect, and thus ensures the stability of the film forming process and the consistency of product quality.

[0054] Of course, the adjustable connection structure 400 includes, but is not limited to, the above-described forms. For example, the adjustable connection structure 400 can also have a vertical guide rail installed on the first side wall 1103, with the vibrator connected to the guide rail via a slider. The slider is equipped with a locking device, and the slider can slide freely up and down on the guide rail, thereby driving the vibrator to move vertically. After reaching a suitable position, the slider is fixed on the guide rail by the locking device, thereby realizing the adjustment and fixation of the position of the vibrator.

[0055] In one possible embodiment, the vibrator is a cylindrical vibrator or a prismatic vibrator.

[0056] When the cylindrical vibrator is working, its circumferential surface can transmit vibration energy to the surrounding material in a relatively even manner, avoiding local vibration that is too strong or too weak. This helps the material to flow and distribute more evenly within the shell 110, which is very beneficial for ensuring the consistency of film quality and can reduce problems such as uneven film thickness caused by uneven material distribution.

[0057] The angular or planar structure of a prismatic vibrator can generate more directional vibrational energy transfer during vibration. For example, when the edges or planes of the prism come into contact with the material, the vibrational energy can be more concentrated and transferred to the material in a specific direction. This can be more effective for areas that require focused vibration or mixing, helping to break up clumps or agglomerates of the material, making the material mix more thoroughly, and improving the uniformity and quality of film formation. The angular and planar structures of the prismatic vibrator can also increase the friction between the vibrator and the material. During vibration, this greater friction can better drive the material movement, promote the tumbling and flow of the material, and prevent the material from stagnating or clogging.

[0058] In one possible embodiment, see Figures 1 to 3 The feeding assembly 200 includes a trough 210 and a second vibrator 220. The trough 210 is used to store powder. The outlet 1102 of the trough 210 faces the extrusion seam. The second vibrator 220 is connected to the trough 210. The second vibrator 220 can drive the bottom of the trough 210 to vibrate, so that the powder in the trough 210 moves towards the outlet 1102 under the action of vibration, so that the powder can enter the extrusion seam through the outlet 1102.

[0059] During storage and transportation, powder is prone to accumulating and clogging in the feed trough 210 due to clumping, moisture, or its own stickiness. The second vibrator 220 drives the bottom of the feed trough 210 to vibrate, which can break the interaction force between the powder and keep the powder in a loose state, allowing it to flow smoothly towards the discharge port 1102. This effectively avoids clogging of the feed trough 210, ensures the continuity of the feeding process, and the frequency and amplitude of the vibration can be controlled by adjusting the second vibrator 220. This allows for precise control of the movement speed and flow rate of the powder in the feed trough 210. Stable vibration causes the powder to move evenly towards the discharge port 1102 in the feed trough 210, achieving uniform feeding and ensuring the working stability of the extrusion seam and the consistency of the diaphragm quality.

[0060] In one possible embodiment, the second vibrator 220 is connected to the end of the feed trough 210 away from the discharge port 1102.

[0061] By placing the second vibrator 220 at the end furthest from the discharge port 1102, vibration can be transmitted from one end of the trough 210 to the other, ensuring that the powder in the entire trough 210 receives relatively uniform vibration. Compared to placing the second vibrator 220 near the discharge port 1102 or in other locations, this arrangement can prevent powder from accumulating in certain areas of the trough 210 due to insufficient vibration, ensuring that the powder can flow effectively from all parts of the trough 210 to the discharge port 1102, improving the comprehensiveness and uniformity of powder flow. Furthermore, since the vibration is transmitted from the end furthest from the discharge port 1102, the powder is continuously agitated and pushed during the vibration transmission process, which can also move powder that may have accumulated at the bottom or corners of the trough 210, reducing the accumulation of powder in these areas, maintaining the overall fluidity of the powder in the trough 210, and reducing the risk of blockage caused by powder accumulation.

[0062] In addition, if the second vibrator 220 is close to the discharge port 1102, the direct action of the vibration may cause large fluctuations in the powder pressure at the discharge port 1102, affecting the uniformity and stability of the discharge. However, if the second vibrator 220 is set at the end away from the discharge port 1102, the vibration is buffered and transmitted by the powder in the trough 210. When it reaches the discharge port 1102, the vibration has a relatively small impact on the powder pressure at the discharge port 1102, which can effectively reduce the pressure fluctuation at the discharge port 1102 and allow the powder to flow out in a more stable state.

[0063] In one possible embodiment, the second vibrating element 220 is an electromagnetic vibrator.

[0064] Electromagnetic vibrators can precisely adjust the frequency and amplitude of vibration by changing the frequency and intensity of the input current. This allows operators to flexibly adjust vibration parameters according to the characteristics of different powders, the size and shape of the feed trough 210, and the requirements of the production process to achieve the best feeding effect. For example, for powders with smaller particle size and higher viscosity, the vibration frequency can be reduced and the vibration amplitude increased to make the powder flow better; while for powders with larger particle size and better flowability, the vibration frequency can be increased and the vibration amplitude reduced to achieve uniform feeding.

[0065] Of course, the second vibrating element 220 can be an eccentric wheel vibrating element, a cam vibrating element, etc., in addition to an electromagnetic vibrating element.

[0066] In one possible embodiment, see Figures 1 to 4The film-forming apparatus 1 also includes a control module and a detection element 500 electrically connected to the control module. The detection element 500 is disposed inside the housing 110 and is located near the top of the housing 110. The detection element 500 is used to detect the height of powder accumulated at the extrusion seam. The control module is electrically connected to the second vibrating element 220. The control module is used to control the vibration frequency of the second vibrating element 220 according to the height of powder accumulated at the extrusion seam detected by the detection element 500.

[0067] The height of powder accumulated at the extrusion seam is monitored in real time by the detection element 500. The control module can accurately adjust the vibration frequency of the second vibrator 220 according to the powder height. When the powder height is low, the vibration frequency is appropriately increased to accelerate the flow of powder to the extrusion seam and ensure that there is enough powder to participate in film formation. When the powder height is too high, the vibration frequency is reduced to avoid excessive powder accumulation, so that the amount of powder entering the extrusion seam remains stable and uniform, thereby ensuring the consistency of film thickness and quality and reducing the probability of defects such as uneven film thickness and voids. In addition, the powder supply may be affected by various factors during the film formation process. The detection element 500 can capture these changes in real time, and the control module can quickly adjust the vibration frequency of the second vibrator 220 according to the detection results. This allows the film forming device 1 to quickly adapt to changes in production conditions without frequent manual intervention and adjustment, shortening the production adjustment time and improving the flexibility and adaptability of production.

[0068] The aforementioned detection component 500 can be a laser displacement sensor or an ultrasonic ranging sensor, etc., and is not limited here.

[0069] This application also provides an electrode production apparatus, which includes the film forming device 1 described above.

[0070] The film-forming device 1 in this embodiment may have the same structure as the film-forming device 1 in the above embodiments and may bring the same or similar beneficial effects. For details, please refer to the description in the above embodiments. This embodiment will not be repeated here.

[0071] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application.

Claims

1. A film forming apparatus characterized by comprising: The film forming device comprises: a film forming assembly (100), the film forming assembly (100) comprising a housing (110) and two rollers (120), the housing (110) having an inlet (1101) and an outlet (1102), the two rollers (120) being arranged at the outlet (1102) and being rotatable relative to the housing (110), the two rollers (120) being arranged along a first horizontal direction, and a pressing gap being formed between the two rollers (120) to press the powder into a film, the first horizontal direction being perpendicular to the extending direction of the rollers (120); a feeding assembly (200) arranged opposite to the inlet (1101) to feed the powder into the pressing gap; a first vibrating member (300) arranged in the housing (110) above the pressing gap, the first vibrating member (300) being vibratable relative to the housing (110) to scatter the powder accumulated above the pressing gap.

2. The film forming device according to claim 1, wherein: the housing (110) has opposite first and second side walls (1103, 1104) along the extending direction of the rollers (120); the first vibrating member (300) is a vibrating rod arranged in the housing (110), the extending direction of the vibrating rod being parallel to the extending direction of the rollers (120), and one end of the vibrating rod being connected to the first side wall (1103) of the housing (110) and the other end being close to the second side wall (1104) with a gap therebetween.

3. The film forming apparatus according to claim 2, wherein the vibrating rod is connected between the first side walls (1103) by an adjustable connecting structure (400) to make the mounting position of the vibrating rod on the first side walls (1103) adjustable in a vertical direction.

4. The film forming apparatus according to claim 3, wherein the adjustable connecting structure (400) comprises a fastener and an adjusting groove arranged on the first side wall (1103), the adjusting groove extending along the vertical direction, and the fastener being used to fix the vibrating rod in the adjusting groove.

5. The film forming apparatus according to claim 2, wherein the vibrating rod is a cylindrical vibrating rod or a prismatic vibrating rod.

6. The film forming apparatus according to claim 1, wherein the feeding assembly (200) comprises a hopper (210) for storing the powder, the outlet (1102) of the hopper (210) facing the pressing gap, and a second vibrating member (220) connected to the hopper (210), the second vibrating member (220) being able to vibrate the bottom of the hopper (210) to make the powder in the hopper (210) move towards the outlet (1102) under the action of the vibration force, so that the powder can enter the pressing gap through the outlet (1102).

7. The film forming apparatus according to claim 6, wherein the second vibrating member (220) is connected to the end of the hopper (210) away from the outlet (1102).

8. The film forming apparatus according to claim 6, wherein the second vibrating member (220) is an electromagnetic vibrator. 9.The film forming device according to claim 6, characterized in that, the film forming device further comprises a control module and a detection member (500) electrically connected with the control module, the detection member (500) is arranged in the shell (110) and is arranged close to the top of the shell (110), and the detection member (500) is used for detecting the height of the powder accumulated at the extrusion gap; the control module is electrically connected with the second vibration member (220), and the control module is used for controlling the vibration frequency of the second vibration member (220) according to the height of the powder accumulated at the extrusion gap detected by the detection member (500).

10. An electrode tab production apparatus characterized by comprising: The film forming device according to any one of claims 1-9.

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