High-frequency coating device and coating machine

Abstract

The utility model belongs to the technical field of battery manufacturing, and particularly discloses a high-frequency coating device and a coating machine. According to the high-frequency coating device provided by the utility model, the execution assembly drives the flow choking block to slide along the first direction, and the flow choking block can extend out of the upper die head or the lower die head to adjust the gap size of the slit of the die head and change the amount of coated slurry, so that the density of a coating surface is changed; the utility model provides the high-frequency control assembly, the high-frequency control assembly controls the execution assembly to drive the flow choking block to slide to a target position, and the high-frequency control assembly can realize high-frequency driving of the execution assembly to act, so that the response rate of coating surface density adjustment is improved, hysteresis does not exist, the coating surface density is ensured to meet the production requirement, and the production efficiency is improved. And the production quality of the pole piece is further improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to battery manufacturing technical field especially relates to a high frequency coating device and coating machine. BACKGROUND

[0002] Lithium battery has the advantages of high energy density, long cycle life, high voltage, no memory effect and no pollution, has been widely used, and in recent years, lithium battery occupies the market of electric vehicles and energy storage field rapidly due to its unique advantages.

[0003] With the development of lithium battery industry, the requirement of lithium battery performance is more strict, therefore, the production process of lithium battery must be strictly controlled, among them, coating process is a very important process in the production process of lithium battery. The quality, precision and stability of coated pole piece are the basis to ensure the quality and reliability of lithium battery. The high-quality coated pole piece has smooth surface, uniform coating, good adhesion, no material falling, no material dropping, no material shortage, no dust accumulation, no scratch, no bubble. But there are many disturbances in the production process of lithium battery, for example, environmental dust, blocking, poor bubble releasing property of coating, foreign matter or large particle stuck in the coating gap, poor quality of base material, uneven distribution of slurry, low viscosity of slurry, and system error of mechanical equipment that cannot be eliminated, which will cause various defects and malfunctions of coated pole piece.

[0004] In the prior art, the coating liquid in the die head of the coating machine is pressed out along the slit of the coating die head and transferred to the moving base material, an important parameter of coating is coating area density, and the control of the size of the slit is an important factor affecting the coating area density. In the coating process, the size of the slit needs to be adjusted in real time to ensure that the coating area density meets the production requirements. However, the adjustment response rate of the slit in the prior art is slow, and the adjustment has hysteresis, which affects the coating area density. UTILITY MODEL CONTENTS

[0005] The utility model aims at providing a high frequency coating device and coating machine, which improves the response rate of adjusting the coating area density and has no hysteresis, thereby ensuring that the coating area density meets the production requirements.

[0006] To achieve this purpose, the utility model adopts the following technical solutions:

[0007] In a first aspect, a high frequency coating device is provided, comprising:

[0008] an upper die head;

[0009] a lower die head, disposed opposite to the upper die head along a first direction, a coating slit formed between the front end of the lower die head and the front end of the upper die head for slurry outflow, and a gasket provided between the lower die head and the upper die head;

[0010] A choke block is slidably connected with the upper die head or the lower die head in a first direction, and the choke block can extend out of the upper die head or the lower die head to adjust the gap size of the coating slot.

[0011] An execution assembly is connected with the choke block, and is used to drive the choke block to slide in the first direction.

[0012] A high-frequency control assembly is electrically connected with the execution assembly, and the high-frequency control assembly is configured to control the execution assembly to drive the choke block to slide to a target position.

[0013] As an optional technical solution of the high-frequency coating device, a response period of the high-frequency control assembly in controlling the execution assembly to drive the choke block to slide to the target position is less than or equal to 1 ms.

[0014] As an optional technical solution of the high-frequency coating device, a sliding groove is arranged on the upper die head or the lower die head, an opening of the sliding groove faces the gasket, the choke block is slidably arranged in the sliding groove, the execution assembly is arranged outside the upper die head or the lower die head, one end of the execution assembly penetrates a groove wall of the sliding groove and is connected with the choke block.

[0015] As an optional technical solution of the high-frequency coating device, the execution assembly includes a plurality of first motors, the plurality of first motors are arranged in sequence in a second direction, and driving ends of the plurality of first motors are respectively connected with the choke block by penetrating the groove wall of the sliding groove.

[0016] As an optional technical solution of the high-frequency coating device, a first support is arranged outside the upper die head or the lower die head, the first support has an L-shaped structure, a vertical plate of the first support is connected with the upper die head or the lower die head, the driving end of the first motor penetrates a horizontal plate of the first support, and the first motor is fixedly arranged on the horizontal plate of the first support.

[0017] As an optional technical solution of the high-frequency coating device, a first differential adjustment assembly is arranged between each first motor and the corresponding choke block, and the first motor drives the choke block to slide in the first direction through the first differential adjustment assembly.

[0018] As an optional technical solution of the high-frequency coating device, the execution assembly includes a plurality of piezoelectric ceramic actuators, the plurality of piezoelectric ceramic actuators are arranged in sequence in the second direction, and driving ends of the plurality of piezoelectric ceramic actuators are respectively connected with the choke block by penetrating the groove wall of the sliding groove.

[0019] As an optional technical solution of the above-mentioned high-frequency coating device, a second bracket is provided on the outside of the upper die head or the lower die head. The second bracket has an S-shaped structure. One end of the second bracket is connected to the upper die head or the lower die head. The piezoelectric ceramic actuator is fixedly mounted on the second bracket, and the driving end of the piezoelectric ceramic actuator passes through the second bracket.

[0020] As an optional technical solution for the aforementioned high-frequency coating device, each of the piezoelectric ceramic actuators is connected to a second differential adjustment component, which adjusts the displacement of the piezoelectric ceramic actuator in the first direction.

[0021] As an optional technical solution for the aforementioned high-frequency coating device, the second differential adjustment component is connected to a second motor, which drives the second differential adjustment component to adjust the displacement of the piezoelectric ceramic actuator in the first direction.

[0022] As an optional technical solution of the above-mentioned high-frequency coating device, the high-frequency coating device further includes a coating thickness detection element for detecting the thickness of the coated electrode sheet. The coating thickness detection element is electrically connected to the high-frequency control component, and the high-frequency control component is configured to determine the target displacement of the flow blocking block based on the data detected by the coating thickness detection element.

[0023] As an optional technical solution of the above-mentioned high-frequency coating device, the high-frequency coating device further includes a displacement detection element, which is correspondingly arranged with the flow-blocking block and electrically connected to the high-frequency control component. The displacement detection element is configured to detect the actual displacement of the flow-blocking block and transmit the actual displacement of the flow-blocking block to the high-frequency control component. The high-frequency control component is configured to determine whether the flow-blocking block has slid to the target position based on the actual displacement of the flow-blocking block and the target displacement.

[0024] Secondly, a coating machine is provided, including the aforementioned high-frequency coating apparatus.

[0025] The beneficial effects of this utility model are:

[0026] The high-frequency coating device provided by this utility model has an actuator that drives a flow-blocking block to slide along a first direction. The flow-blocking block can extend from the upper or lower die head to adjust the gap size of the slit, thereby changing the amount of coating slurry and thus changing the coating surface density. This utility model also provides a high-frequency control component that controls the actuator to drive the flow-blocking block to the target position. The high-frequency control component can achieve high-frequency drive of the actuator, improving the response rate of coating surface density adjustment, eliminating hysteresis, ensuring that the coating surface density meets production requirements, and thus improving the production quality of the electrode sheet. Attached Figure Description

[0027] Figure 1 is the shaft side view of the first structure of the high-frequency coating device provided by the embodiment of the utility model;

[0028] Figure 2 is the side view of the first structure of the high-frequency coating device provided by the embodiment of the utility model;

[0029] Figure 3 is the partial structure schematic view of A of Figure 2

[0030] Figure 4 is the shaft side view of the second structure of the high-frequency coating device provided by the embodiment of the utility model;

[0031] Figure 5 is the side view of the second structure of the high-frequency coating device provided by the embodiment of the utility model;

[0032] Figure 6 is the partial sectional view of the second structure of the high-frequency coating device provided by the embodiment of the utility model;

[0033] Figure 7 is the shaft side view of the third structure of the high-frequency coating device provided by the embodiment of the utility model;

[0034] Figure 8 is the side view of the third structure of the high-frequency coating device provided by the embodiment of the utility model;

[0035] Figure 9 is the partial sectional view of the third structure of the high-frequency coating device provided by the embodiment of the utility model;

[0036] Figure 10 is the shaft side view of the fourth structure of the high-frequency coating device provided by the embodiment of the utility model;

[0037] Figure 11 is the side view of the fourth structure of the high-frequency coating device provided by the embodiment of the utility model;

[0038] Figure 12 is the partial sectional view of the fourth structure of the high-frequency coating device provided by the embodiment of the utility model;

[0039] Figure 13 is the shaft side view of the fifth structure of the high-frequency coating device provided by the embodiment of the utility model;

[0040] Figure 14 is the side view of the fifth structure of the high-frequency coating device provided by the embodiment of the utility model;

[0041] Figure 15 ​It is the partial sectional view of the fifth structure of the high frequency coating device provided by the embodiment of the utility model.

[0042] In the drawing:

[0043] 100, coating roller;

[0044] 1, upper die head; 2, lower die head; 3, coating slit; 4, gasket; 5, choke block; 6, execution assembly; 7, displacement detection piece; 8, high frequency control assembly; 9, coating thickness detection piece;

[0045] 11, upper lip plate;

[0046] 21, lower lip plate;

[0047] 61, first motor; 62, first support; 63, piezoelectric ceramic actuator; 64, second support; 65, pressing plate; 66, adjusting rod; 67, first differential adjusting assembly; 671, adjusting seat; 672, first screw rod; 673, second screw rod; 68, second differential adjusting assembly; 69, second motor. DETAILED DESCRIPTION

[0048] The utility model will be further explained in detail below in combination with the drawings and embodiments. It can be understood that the specific embodiments described herein are only used to explain the utility model, and not limited to the utility model. In addition, it should be noted that, in order to facilitate the description, only the part related to the utility model is shown in the drawings, not all structures.

[0049] In the description of the utility model, unless otherwise explicitly specified and limited, the terms "connected", "connected", "fixed" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium, or it can be the communication or interaction relationship between two elements. For ordinary skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.

[0050] In the utility model, unless otherwise explicitly specified and limited, the first feature "on" or "under" the second feature can include that the first and second features are in direct contact, or the first and second features are not in direct contact but are in contact through another feature between them. Moreover, the first feature "on", "above" and "above" the second feature includes that the first feature is directly above and obliquely above the second feature, or only indicates that the horizontal height of the first feature is higher than that of the second feature. The first feature "below", "below" and "below" the second feature includes that the first feature is directly below and obliquely below the second feature, or only indicates that the horizontal height of the first feature is less than that of the second feature.

[0051] In the description of the present embodiment, the terms "upper", "lower", "right", "left", and the like, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of description and simplification of operation, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application. In addition, the terms "first" and "second" are only used to distinguish in the description, and have no special meaning.

[0052] As shown in Figures 1 to 6 The present embodiment provides a high-frequency coating device, which comprises an upper die head 1, a lower die head 2, a choke block 5, an execution assembly 6, and a high-frequency control assembly 8. The lower die head 2 is arranged opposite to the upper die head 1 along a first direction, a coating slit 3 for slurry outflow is formed between the front end of the lower die head 2 and the front end of the upper die head 1, and a gasket 4 is arranged between the lower die head 2 and the upper die head 1. The choke block 5 is slidably connected to the upper die head 1 or the lower die head 2 in the first direction, and the choke block 5 can extend out of the upper die head 1 or the lower die head 2 to adjust the gap size of the coating slit 3. The execution assembly 6 is connected to the choke block 5, and the execution assembly 6 is used to drive the choke block 5 to slide in the first direction. The high-frequency control assembly 8 is electrically connected to the execution assembly 6, and the high-frequency control assembly 8 is configured to control the execution assembly 6 to drive the choke block 5 to slide to a target position.

[0053] The high-frequency coating device provided by the present embodiment drives the choke block 5 to slide in the first direction by the execution assembly 6, the choke block 5 can extend out of the upper die head 1 or the lower die head 2 to adjust the gap size of the coating slit 3, change the amount of slurry outflow, and thus improve the coating surface density; the present embodiment provides the high-frequency control assembly 8, the high-frequency control assembly 8 controls the execution assembly 6 to drive the choke block 5 to slide to a target position, and the high-frequency control assembly 8 can realize high-frequency driving of the execution assembly 6, improve the response rate of the coating surface density adjustment, has no hysteresis, ensure that the coating surface density meets the production requirements, and thus improve the production quality of the pole piece.

[0054] The upper die head 1 is provided with an upper lip plate 11, the lower die head 2 is provided with a lower lip plate 21, and the upper lip plate 11 and the lower lip plate 21 form a lip opening in communication with the coating slit 3, and the slurry flows out through the lip opening.

[0055] In some embodiments, the response period of the high-frequency control assembly 8 for controlling the execution assembly 6 to drive the choke block 5 to slide to a target position is less than or equal to 1ms. The high-frequency control period of the choke block 5 is in the order of milliseconds. By setting the high-frequency control period of the choke block 5 to be in the order of milliseconds, the fluctuations of the measurable disturbance and the coating surface density can be suppressed at the millisecond level, and the coating quality is improved.

[0056] The response period refers to the time interval of each control instruction. In practical applications, the shorter the response period of the high-frequency control assembly 8, the more continuous the control effect. In this embodiment, it is assumed that the data curve of the coating surface density is f(t), and the Fourier transform thereof is F(j). A low-pass filter is designed to eliminate high-frequency white noise interference and retain key feature information. The filtered data curve of the coating surface density is f*(t). If the desired coating control effect is that the change in the coating surface density is not greater than 0.01 mg / cm 2 The surface density data is collected at different sampling periods ΔT, and the change in the coating surface density between adjacent two sampling periods is calculated. The value of ΔT is continuously adjusted. When ΔT = ΔT1, max(Δm) ≤ 0.01 mg / cm 2 Therefore, ΔT1 can be used as the high-frequency response period in this embodiment. Through experiments, it is found that when ΔT is adjusted to 1 ms, it is a time interval that meets the condition, that is, 1 ms can be used as the response period in this embodiment.

[0057] The high-frequency coating device further comprises a coating thickness detection member 9. The coating thickness detection member 9 is used to detect the thickness of the coated pole piece. The coating thickness detection member 9 is electrically connected to the high-frequency control assembly 8. The high-frequency control assembly 8 is configured to determine the target displacement amount of the flow blocking block 5 according to the data detected by the coating thickness detection member 9, so as to realize real-time detection of the thickness of the coated pole piece, accurately adjust the displacement amount of the flow blocking block 5, and further improve the coating quality. Optionally, the coating thickness detection member 9 can be a laser thickness sensor or an ultrasonic thickness sensor, which is not limited here. The electrical connection structure between the coating thickness detection member 9 and the high-frequency control assembly 8 is a prior art, which is not described in detail here.

[0058] Further optionally, as shown in Figure 11 The coating machine die also comprises a displacement detection member 7. Each flow blocking block 5 is provided with a displacement detection member 7. The displacement detection member 7 is electrically connected to the high-frequency control assembly 8. The displacement detection member 7 is configured to detect the actual displacement amount of the flow blocking block 5 and transmit the actual displacement amount of the flow blocking block 5 to the high-frequency control assembly 8. The high-frequency control assembly 8 is configured to determine whether the flow blocking block 5 slides to the target position according to the actual displacement amount and the target displacement amount of the flow blocking block 5, so as to accurately control the displacement amount of the flow blocking block 5 and improve the coating quality. The electrical connection structure between the displacement detection member 7 and the high-frequency control assembly 8 is a prior art, which is not described in detail here. The displacement detection member 7 can be a potentiometer type displacement sensor or a laser type displacement sensor.

[0059] In some embodiments, continuing to refer to Figure 5As shown in the drawings, the upper die 1 or the lower die 2 is provided with a sliding groove, the slot of the sliding groove faces the gasket 4, the choke block 5 is slidingly arranged in the sliding groove, the execution assembly 6 is arranged outside the upper die 1 or the lower die 2, one end of the execution assembly 6 penetrates the slot wall of the sliding groove and is connected with the choke block 5. The sliding groove provides a guide for the movement of the choke block 5, avoiding the choke block 5 from deviating during the movement and affecting the adjustment effect of the gap size of the coating slot 3, and further affecting the coating quality.

[0060] In the first implementable mode, as shown in the drawings, Figure 1 and Figure 2 the execution assembly 6 includes a plurality of first motors 61, the plurality of first motors 61 are arranged in sequence along the second direction, and the driving ends of the plurality of first motors 61 are respectively connected with the choke block 5 by penetrating the slot wall of the sliding groove. The first motor 61 is electrically connected with the high-frequency control assembly 8, and the connection structure of the first motor 61 and the high-frequency control assembly 8 is prior art, which will not be described in detail here. The high-frequency control assembly 8 controls the rotation of the first motor 61, and the first motor 61 drives the choke block 5 to slide in the first direction to adjust the gap size of the coating slot 3. Further, the high-frequency control assembly 8 determines whether the choke block 5 slides to the target position according to the actual displacement amount of the choke block 5 detected by the displacement detection piece 7. The first motor 61 can be a linear motor.

[0061] Further, the outside of the upper die 1 or the lower die 2 is provided with a first bracket 62, the first bracket 62 is in L-shaped structure, the vertical plate of the first bracket 62 is connected with the upper die 1 or the lower die 2, the driving end of the first motor 61 penetrates the horizontal plate of the first bracket 62, and the first motor 61 is fixedly arranged on the horizontal plate of the first bracket 62. The first bracket 62 is arranged to facilitate the fixation of the first motor 61.

[0062] The output shaft of the first motor 61 is connected with an adjusting rod 66, the adjusting rod 66 is connected with the choke block 5, and the adjusting rod 66 is connected with the choke block 5 by penetrating the slot wall of the sliding groove.

[0063] In the second implementable mode, as shown in the drawings, Figures 4 to 6 the execution assembly 6 includes a plurality of first motors 61, and a first differential adjustment assembly 67 is arranged between each first motor 61 and the corresponding choke block 5, and the first motor 61 drives the choke block 5 to slide in the first direction through the first differential adjustment assembly 67. The first motor 61 is electrically connected with the high-frequency control assembly 8, and the connection structure of the first motor 61 and the high-frequency control assembly 8 is prior art, which will not be described in detail here. The high-frequency control assembly 8 controls the rotation of the first motor 61, and the first motor 61 drives the choke block 5 to slide in the first direction through the first differential adjustment assembly 67 to adjust the gap size of the coating slot 3. Further, the high-frequency control assembly 8 determines whether the choke block 5 slides to the target position according to the actual displacement amount of the choke block 5 detected by the displacement detection piece 7. The first motor 61 can be a step motor.

[0064] The first differential adjusting assembly 67 adjusts the displacement of the choke block 5 in the first direction under the rotation drive of the first motor 61. In the embodiment, the first support 62 is also arranged, and the specific arrangement structure is referred to the first implementable embodiment. The first differential adjusting assembly 67 is connected with the horizontal plate of the first support 62. Optionally, the first differential adjusting assembly 67 comprises an adjusting seat 671, a first screw rod 672 and a second screw rod 673. The adjusting seat 671 is fixedly connected with the horizontal plate of the first support 62. The first screw rod 672 is provided with first and second thread segments with the same rotation direction at two ends. The lead of the first thread segment is greater than that of the second thread segment. The first thread segment is screwed with the adjusting seat 671. The second thread segment is screwed with one end of the second screw rod 673. The second screw rod 673 is slidingly fitted with the adjusting seat 671 in the second direction. The other end of the second screw rod 673 is connected with an adjusting rod 66. The adjusting rod 66 is connected with the choke block 5. The first motor 61 is connected with the first screw rod 672. The first motor 61 drives the first screw rod 672 to rotate. The first screw rod 672 moves downward relative to the adjusting seat 671, while the second screw rod 673 moves upward relative to the second thread segment of the first screw rod 672. The distance of the first screw rod 672 moving upward and downward and the distance of the second screw rod 673 moving upward and downward are combined, so that the smaller distance of movement is achieved, the precision of adjusting the choke block 5 is improved, and the adjustment is more accurate. Moreover, the automatic adjustment can be realized by the first motor 61, so that the adjustment is convenient and the precision is high.

[0065] In the third implementable embodiment, as shown in Figures 7 to 9 The execution assembly 6 comprises a plurality of piezoelectric ceramic actuators 63. The plurality of piezoelectric ceramic actuators 63 are arranged in sequence in the second direction. The driving ends of the plurality of piezoelectric ceramic actuators 63 are connected with the choke block 5 through the slot wall of the sliding slot. The piezoelectric ceramic actuators 63 generate deformation under the electrification to drive the choke block 5 to move in the first direction, thereby playing a role of adjusting the position of the choke block 5. The choke block 5 cooperates with the piezoelectric ceramic actuators 63 to make the movement of the choke block 5 in the first direction have the effect of automatic deviation correction. The piezoelectric ceramic actuators 63 are electrically connected with the high-frequency control assembly 8. The specific connection structure is the prior art, which is not described in detail here.

[0066] Further, the elastic member is connected between the choke block 5 and the upper die head 1 or the lower die head 2. When the piezoelectric ceramic actuators 63 do not exert force on the choke block 5, the choke block 5 is mechanically automatically reset by the elastic force of the elastic member after being compressed.

[0067] The outer side of the upper die head 1 or the lower die head 2 is provided with a second support 64, the second support 64 is in S-shaped structure, one end of the second support 64 is connected with the upper die head 1 or the lower die head 2, and the piezoelectric ceramic actuator 63 is fixedly arranged on the second support 64, the driving end of the piezoelectric ceramic actuator 63 penetrates the second support 64, and the second support 64 is arranged to facilitate fixing the piezoelectric ceramic actuator 63.

[0068] The high-frequency control assembly 8 determines whether the flow blocking block 5 slides to the target position according to the actual displacement amount of the flow blocking block 5 detected by the displacement detection piece 7. Optionally, the displacement detection piece 7 is fixedly connected with the second support 64, the driving end of the piezoelectric ceramic actuator 63 is connected with an adjusting rod 66, the adjusting rod 66 is provided with a pressing plate 65, the pressing plate 65 is arranged corresponding to the detection end of the displacement detection piece 7, the piezoelectric ceramic actuator 63 generates deformation after being electrified to drive the adjusting rod 66 to generate displacement in the first direction, and the displacement detection piece 7 obtains the displacement amount of the adjusting rod 66 driven by the piezoelectric ceramic actuator 63 through detecting the pressing plate 65, and further obtains the displacement amount of the flow blocking block 5.

[0069] In the fourth implementable manner, as shown in Figures 10 to 12 The difference between this embodiment and the third embodiment is that each piezoelectric ceramic actuator 63 is respectively connected with a second differential adjusting assembly 68, the displacement of the piezoelectric ceramic actuator 63 in the first direction is adjusted through the second differential adjusting assembly 68, and further the displacement of the flow blocking block 5 in the first direction is adjusted. The second differential adjusting assembly 68 can realize coarse adjustment of the displacement amount of the flow blocking block 5, and the piezoelectric ceramic actuator 63 can realize fine adjustment of the displacement amount of the flow blocking block 5.

[0070] The other structures of this embodiment are the same as those of the third embodiment, and will not be described in detail here. The structure of the second differential adjusting assembly 68 is the same as that of the first differential adjusting assembly 67, and will not be described in detail here. The displacement of the piezoelectric ceramic actuator 63 can be adjusted by manually screwing the first screw rod 672.

[0071] In the fifth implementable manner, as shown in Figures 13 to 15 The difference between this embodiment and the fourth embodiment is that each second differential adjusting assembly 68 is further respectively connected with a second motor 69, and the second motor 69 drives the second differential adjusting assembly 68. Specifically, the second motor 69 is connected with the first screw rod 672 of the second differential adjusting assembly 68, drives the first screw rod 672 to rotate, adjusts the displacement of the piezoelectric ceramic actuator 63 in the first direction, further adjusts the displacement of the flow blocking block 5 in the first direction, and realizes automatic adjustment. The second motor 69 can be a stepping motor, and the second differential adjusting assembly 68 adjusts the displacement amount of the flow blocking block 5 in the first direction under the rotation driving of the second motor 69.

[0072] The other structures of this embodiment are the same as those of the fourth embodiment, and will not be described in detail here.

[0073] The embodiment also provides a coating machine, comprising the high-frequency coating device, further comprising a coating roller 100, a coating die of the coating machine is arranged on one side of the coating roller 100, the coating slot 3 of the high-frequency coating device faces the coating roller 100, the coating pole piece can pass through between the coating roller 100 and the coating slot 3, and the coating pole piece is attached to the coating roller 100, and the coating slot 3 is in contact with the coating pole piece.

[0074] Obviously, the above embodiments of the utility model are only examples for clearly illustrating the utility model, and are not the limitation of the embodiments of the utility model. For ordinary skilled in the art, various obvious changes, re-adjustment and replacement can be carried out without departing from the protection scope of the utility model. Here, all the embodiments need not and cannot be exhausted. Any modification, equivalent replacement and improvement within the spirit and principle of the utility model should be included in the protection scope of the utility model claim.

Claims

1. A high frequency coating device, characterized by, The application relates to a coating device, which comprises: an upper die head (1); a lower die head (2) arranged opposite to the upper die head (1) along a first direction, a front end of the lower die head (2) and a front end of the upper die head (1) forming a coating gap (3) for slurry outflow, and a gasket (4) arranged between the lower die head (2) and the upper die head (1); a flow resistance block (5) slidingly connected to the upper die head (1) or the lower die head (2) along the first direction, and capable of extending out of the upper die head (1) or the lower die head (2) to adjust the gap size of the coating gap (3); an execution assembly (6) connected to the flow resistance block (5) and used for driving the flow resistance block (5) to slide along the first direction; a high-frequency control assembly (8) electrically connected to the execution assembly (6) and configured to control the execution assembly (6) to drive the flow resistance block (5) to slide to a target position.

2. The high-frequency coating apparatus according to claim 1, characterized by The response cycle of the high-frequency control assembly (8) for controlling the execution assembly (6) to drive the flow resistance block (5) to slide to the target position is less than or equal to 1 ms.

3. The high-frequency applicator according to claim 1, wherein The upper die head (1) or the lower die head (2) is provided with a sliding groove, the groove opening of the sliding groove faces the gasket (4), the flow resistance block (5) is slidingly arranged in the sliding groove, the execution assembly (6) is arranged outside the upper die head (1) or the lower die head (2), and one end of the execution assembly (6) penetrates the groove wall of the sliding groove and is connected with the flow resistance block (5).

4. The high-frequency applicator according to claim 3, characterized in that The execution assembly (6) comprises a plurality of first motors (61), the plurality of first motors (61) are arranged in sequence along a second direction, and the driving ends of the plurality of first motors (61) respectively penetrate the groove wall of the sliding groove and are connected with the flow resistance block (5).

5. The high-frequency coating apparatus according to claim 4, characterized by The outside of the upper die head (1) or the lower die head (2) is provided with a first support (62), the first support (62) has an L-shaped structure, the vertical plate of the first support (62) is connected with the upper die head (1) or the lower die head (2), the driving end of the first motor (61) penetrates the horizontal plate of the first support (62), and the first motor (61) is fixedly arranged on the horizontal plate of the first support (62).

6. The high-frequency applicator according to claim 4, wherein A first differential adjustment assembly (67) is arranged between each first motor (61) and the corresponding flow resistance block (5), and the first motor (61) drives the flow resistance block (5) to slide along the first direction through the first differential adjustment assembly (67).

7. The high-frequency applicator according to claim 3, wherein The execution assembly (6) comprises a plurality of piezoelectric ceramic actuators (63), the plurality of piezoelectric ceramic actuators (63) are arranged in sequence along the second direction, and the driving ends of the plurality of piezoelectric ceramic actuators (63) respectively penetrate the groove wall of the sliding groove and are connected with the flow resistance block (5).

8. The high-frequency coating apparatus according to claim 7, characterized by The outer side of the upper die head (1) or the lower die head (2) is provided with a second support (64), which is in an S-shaped structure, one end of the second support (64) is connected with the upper die head (1) or the lower die head (2), and the piezoelectric ceramic actuator (63) is fixedly arranged on the second support (64), and the driving end of the piezoelectric ceramic actuator (63) penetrates the second support (64).

9. The high-frequency applicator according to claim 7, wherein Each piezoelectric ceramic actuator (63) is connected with a second differential adjustment assembly (68), and the displacement of the piezoelectric ceramic actuator (63) in the first direction is adjusted through the second differential adjustment assembly (68).

10. The high-frequency coating apparatus according to claim 9, characterized by The second differential adjustment assembly (68) is connected with a second motor (69), and the second motor (69) drives the second differential adjustment assembly (68) to adjust the displacement of the piezoelectric ceramic actuator (63) in the first direction.

11. The high frequency coater according to claim 1, wherein The high-frequency coating device further comprises a coating thickness detection member (9) for detecting the thickness of the coated pole piece, the coating thickness detection member (9) is electrically connected with the high-frequency control assembly (8), and the high-frequency control assembly (8) is configured to determine the target displacement amount of the flow blocking block (5) according to the data detected by the coating thickness detection member (9).

12. The high-frequency coating apparatus according to claim 11, characterized by The high-frequency coating device further comprises a displacement detection member (7) corresponding to the flow blocking block (5) and electrically connected with the high-frequency control assembly (8), the displacement detection member (7) is configured to detect the actual displacement amount of the flow blocking block (5) and transmit the actual displacement amount of the flow blocking block (5) to the high-frequency control assembly (8), and the high-frequency control assembly (8) is configured to determine whether the flow blocking block (5) slides to the target position according to the actual displacement amount and the target displacement amount of the flow blocking block (5).

13. A coater characterized by comprising: The high-frequency coating device comprises the high-frequency coating device according to any one of claims 1-12. The high-frequency coating device comprises the high-frequency coating device according to any one of claims 1-12.

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