Ultrasonic spraying device

Abstract

The utility model belongs to the technical field of spraying, and discloses an ultrasonic spraying device which comprises a bearing part and at least one ultrasonic spraying head, the bearing part is provided with a supporting plane, and a plurality of adsorption holes are formed in the supporting plane; at least two shielding pieces are arranged side by side in the same direction above the supporting plane, and a coating area is formed between any two adjacent shielding pieces; in the direction perpendicular to the supporting plane, each shielding piece has a first state far away from the supporting plane and a second state close to the supporting plane, and in the second state, a diaphragm pressing gap is formed between each shielding piece and the supporting plane and used for pressing a diaphragm on the supporting plane; in any two adjacent shielding pieces, the position of at least any one of the shielding pieces in a plane parallel to the supporting plane is adjustable, so that the diaphragm pressed on the supporting plane is leveled; and the ultrasonic spray head moves at least in the width direction of the shielding piece and is used for spraying the coating liquid to the membrane. The device can improve the flatness and the coating uniformity of the diaphragm and improve the yield of the diaphragm.

Description

Technical Field

[0001] The utility model belongs to the technical field of spraying, and in particular relates to an ultrasonic spraying device. Background Art

[0002] Diaphragms such as battery electrodes are generally fixed by vacuum adsorption and coated with spray equipment. However, direct adsorption and fixation of the diaphragm may cause problems such as bulging, creases, and uneven material distribution to form vertical lines, which affect the flatness of the diaphragm. Utility Model Content

[0003] In view of the above-mentioned defects or deficiencies in the prior art, it is desired to provide an ultrasonic spraying device.

[0004] The first aspect of the present invention provides an ultrasonic spraying device, comprising:

[0005] A carrier, wherein the carrier has a support plane provided with a plurality of adsorption holes;

[0006] At least two shielding members are arranged side by side in the same direction above the support plane, and a coating area is formed between any two adjacent shielding members;

[0007] In a direction perpendicular to the supporting plane, each of the shielding members has a first state away from the supporting plane and a second state close to the supporting plane. In the second state, a diaphragm pressure gap is formed between each of the shielding members and the supporting plane, for pressing the diaphragm onto the supporting plane.

[0008] The position of at least one of any two adjacent shielding members in a plane parallel to the supporting plane is adjustable to flatten the diaphragm pressed on the supporting plane;

[0009] At least one ultrasonic nozzle is movable at least in the width direction of the shielding member, and is used for spraying coating liquid onto the membrane in each coating area.

[0010] The ultrasonic spraying device provided by the utility model has a simple structure and can perform a leveling operation on the diaphragm, avoiding problems such as bulging, creases, and vertical lines formed by uneven material distribution on the diaphragm, thereby improving the flatness of the diaphragm; and the ultrasonic nozzle can achieve uniform coating of the diaphragm coating area, thereby improving the yield rate of diaphragm processing.

[0011] In addition, the ultrasonic spraying device of the present invention may also have the following additional technical features:

[0012] Preferably, it includes multiple ultrasonic nozzles; the ultrasonic spraying device also includes first support members with the same number as the coating areas, and each coating area is arranged in a one-to-one correspondence with each first support member, each first support member is extended along the length direction of the shielding member, and at least one ultrasonic nozzle is arranged on each first support member, and each ultrasonic nozzle is arranged side by side on the first support member along the length direction.

[0013] Preferably, second support members are respectively provided at both ends of the first support member, the first support member is slidably provided on the second support member along the width direction of the shielding member, and the second support member spans across each of the coating areas.

[0014] Preferably, the ultrasonic nozzle includes an ultrasonic transducer, a discharge channel and a blowing channel; wherein, the ultrasonic transducer includes an ultrasonic vibration rod, the discharge channel is connected to a discharge nozzle, the blowing channel is connected to a blowing nozzle, the discharge nozzle and the blowing nozzle are respectively arranged on both sides of the ultrasonic vibration rod, the discharge nozzle is used to provide coating liquid to the ultrasonic vibration rod, and the blowing nozzle is used to blow air to the ultrasonic vibration rod.

[0015] Preferably, at least part of the side surface of the ultrasonic vibration rod close to the discharge nozzle is an arc-shaped surface, and at least part of the side surface of the ultrasonic vibration rod close to the blowing nozzle is a plane.

[0016] Preferably, the blowing direction of the blowing nozzle is arranged obliquely to the axis of the ultrasonic vibration rod.

[0017] Preferably, the ultrasonic nozzle is fixed on a first support frame, and a second support frame is provided at the lower end of the side wall of the first support frame so as to slide along the axial direction of the ultrasonic vibration rod. The second support frame includes a vertical segment support and a horizontal segment support connected by bending, wherein the vertical segment support is slidably connected to the first support frame, and a third support frame is provided on the side of the horizontal segment support away from the first support frame;

[0018] The horizontal section bracket and the third support frame are both provided with a center hole, the diameter of the center hole is larger than the diameter of the ultrasonic vibration rod, and the ultrasonic vibration rod passes through the center holes of the horizontal section bracket and the third support frame in sequence, and is loosely fitted with the center hole.

[0019] Preferably, mounting holes are provided on the horizontal section bracket and the third support bracket, and the axes of the mounting holes are arranged parallel to the axis of the center hole; a protective cover is provided outside the discharge nozzle, and the discharge nozzle is installed in the mounting hole through the protective cover.

[0020] Preferably, a limiting groove is provided on the side of the third support frame away from the ultrasonic vibration rod, a limiting bracket is provided in the limiting groove, a circular hole is provided in the limiting bracket, a rotating part is assembled in the circular hole, the rotating part is assembled with the blowing nozzle, and the axis of the blowing nozzle is eccentrically arranged with the rotation axis of the rotating part.

[0021] Preferably, a pressing block is screwed onto the limiting bracket, and a relief opening for avoiding the blowing nozzle is provided on the pressing block.

[0022] Additional aspects and advantages of the present invention will be given in part in the following description and will become apparent from the following description or learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Other features, objects and advantages of the present application will become more apparent upon reading the detailed description of non-limiting embodiments made with reference to the following drawings:

[0024] Figure 1 A top view of the ultrasonic spraying device (without an ultrasonic spray head) provided in an embodiment of the present application;

[0025] Figure 2 A top view of an ultrasonic spray coating device (with an ultrasonic nozzle) provided in an embodiment of the present application;

[0026] Figure 3 A front view of the ultrasonic spraying device provided in an embodiment of the present application;

[0027] Figure 4 A left side view of the ultrasonic spraying device provided in an embodiment of the present application;

[0028] Figure 5 A diagram showing the coordination structure of the shielding member and the diaphragm provided in an embodiment of the present application;

[0029] Figure 6 A front view of the ultrasonic nozzle provided in an embodiment of the present application;

[0030] Figure 7 A side view of an ultrasonic nozzle provided in an embodiment of the present application;

[0031] Figure 8 A rear view of the ultrasonic nozzle provided in an embodiment of the present application;

[0032] Figure 9 A structural diagram of the discharge nozzle provided in an embodiment of the present application;

[0033] Figure 10 This is a diagram of the compression block structure provided in an embodiment of the present application.

[0034] In the above picture:

[0035] 100 bearing member; 110 shielding member; 111 shielding plate; 112 cushion; 120 diaphragm; 121 coating area; 122 blank area; 130 shielding member mounting body; 140 first linear drive member; 150 second linear drive member; 160 laser signal transmitter; 161 laser signal receiver; 170 heat exchange chamber; 180 support frame; 190 third linear drive member;

[0036] 200 Ultrasonic nozzle; 210 Ultrasonic transducer; 211 Ultrasonic vibration rod; 220 Discharge channel; 221 Discharge nozzle; 222 Protective cover; 230 Air blowing channel; 231 Air blowing nozzle; 240 First support frame; 250 Second support frame; 251 Vertical section support; 252 Horizontal section support; 260 Third support frame; 270 Limiting support; 280 Pressing block; 281 Avoidance;

[0037] 300 first support member; 400 second support member. DETAILED DESCRIPTION

[0038] The present application will be further described in detail below with reference to the accompanying drawings and examples. It should be understood that the specific embodiments described herein are merely for the purpose of explaining the relevant utility model and are not intended to limit the utility model. It should also be noted that, for ease of description, only portions relevant to the utility model are shown in the accompanying drawings.

[0039] It should be noted that, in the absence of conflict, the embodiments and features of the embodiments in this application can be combined with each other. The present application will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0040] The terms used in this application are for the purpose of describing specific embodiments only and are not intended to limit this application. The singular forms "a," "the," and "the" used in this application and the appended claims are also intended to include plural forms unless the context clearly indicates otherwise. It should also be understood that the term "and / or" as used herein refers to and encompasses any or all possible combinations of one or more of the associated listed items.

[0041] Unless the context requires otherwise, throughout the specification and claims, the term "comprising" is to be construed in an open, inclusive sense, that is, meaning "including, but not limited to."

[0042] Throughout the specification, terms such as "one embodiment," "some embodiments," "exemplary embodiments," "example," "specific example," or "some examples" are intended to indicate that a particular feature, structure, material, or characteristic associated with that embodiment or example is included in at least one embodiment or example of the present disclosure. Schematic representations of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be included in any one or more embodiments or examples in any appropriate manner.

[0043] The terms "first" and "second" are used for descriptive purposes only and should not be understood to indicate or imply relative importance or implicitly specify the number of the technical features indicated. Therefore, a feature specified as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of the embodiments of the present disclosure, unless otherwise specified, "plurality" means two or more.

[0044] The membrane 120, such as the battery electrode, generally needs to be sprayed with an inorganic material. The presence of the inorganic material can make the diffusion effect of lithium ions more obvious, ensuring that the charging and discharging process is more efficient. Before the battery electrode is sprayed with the inorganic material, vacuum adsorption is generally used to fix the battery electrode, and a heating element is used to heat the sprayed inorganic material to ensure the uniform distribution of the inorganic material on the battery electrode. However, if the battery electrode is directly fixed by vacuum adsorption, the battery electrode will have problems such as bulging, creases, and uneven material distribution forming vertical lines, which affects the flatness of the battery electrode and thus affects the efficiency and quality of the inorganic material coating.

[0045] In order to solve the above technical problems, Figures 1 to 4 As shown, the first aspect of the present invention provides an ultrasonic spraying device, comprising:

[0046] A carrier 100, wherein the carrier 100 has a support plane, and the support plane is provided with a plurality of adsorption holes;

[0047] At least two shielding members 110 are arranged side by side in the same direction above the support plane, and a coating area 121 is formed between any two adjacent shielding members 110;

[0048] In a direction perpendicular to the supporting plane, each of the shielding members 110 has a first state away from the supporting plane and a second state close to the supporting plane. In the second state, a diaphragm pressure gap is formed between each of the shielding members 110 and the supporting plane, for pressing the diaphragm 120 onto the supporting plane.

[0049] The position of at least one of any two adjacent shielding members 110 in a plane parallel to the supporting plane is adjustable to flatten the diaphragm 120 pressed on the supporting plane;

[0050] At least one ultrasonic nozzle 200 is movable at least in the width direction of the shielding member 110 , and is configured to spray coating liquid onto the membrane within each coating area 121 .

[0051] Specifically, a plurality of adsorption holes penetrating the supporting plane are provided on the supporting plane of the carrier 100, and the plurality of adsorption holes are distributed in an array on the supporting plane to reduce the suction force of a single adsorption hole. The diaphragm 120 is placed on the supporting plane of the carrier 100. The use of adsorption holes distributed in an array can reduce the deformation of the diaphragm 120 during adsorption, thereby ensuring the flatness of the diaphragm 120.

[0052] A plurality of shielding members 110 (at least two shielding members 110) are arranged side by side above the supporting plane, and a coating area 121 is formed between two adjacent shielding members 110. The diaphragm 120 can be coated in the coating area 121. The shielding members 110 are located in the non-coating area 121 of the diaphragm 120. The non-coating area 121 can be a blank area 122 of the diaphragm 120, and no coating operation is performed in the blank area 122. For example, if the diaphragm 120 is a battery electrode, the battery electrode has blank areas 122 on both side edges and the middle position along the width direction, and the blank areas 122 extend along the length direction of the battery electrode. The setting of the blank areas 122 facilitates the cutting of the battery electrode to cut out the battery electrode of the required size, and the electrode tab mounting position of the battery electrode can be formed in the blank areas 122. The shielding member 110 is arranged directly above the electrode tab mounting position to prevent the electrode tab position from being contaminated; a coating area 121 is formed between two adjacent blank areas 122, and the coating area 121 of the battery electrode can be coated with a solid electrolyte material. The three shielding members 110 can be respectively arranged in the corresponding blank areas 122 above the battery electrode to shield the blank areas 122 to prevent the blank areas 122 from being coated with solid electrolyte materials, such as inorganic materials. It should be noted that in this example, three blank areas 122 are used to illustrate the battery pole piece. The number of corresponding blank areas 122 can be set according to the cutting size and quantity requirements of the battery pole piece. Technical personnel in this field do not make any special restrictions. Accordingly, the number of blank areas 122 is the same as the number of shielding parts 110.

[0053] Each shielding member 110 can move up and down on the supporting plane in a direction perpendicular to the supporting plane, so that each shielding member 110 has a first state away from the supporting plane and a second state close to the supporting plane. In the first state, each shielding member 110 is in a separated state from the supporting plane, which is convenient for placing the diaphragm 120 on the supporting plane; in the second state, a diaphragm pressure gap is formed between each shielding member 110 and the supporting plane, and the diaphragm pressure gap matches the thickness of the diaphragm 120. Each shielding member 110 is pressed on the surface of the diaphragm 120 to make the diaphragm 120 fit tightly against the supporting plane.

[0054] At least one of any two adjacent shielding members 110 is capable of moving relative to the support plane in a direction parallel to the support plane, with the direction of movement being parallel to the width of the diaphragm 120. When the diaphragm 120 and each shielding member 110 are in a compressed state, the shielding member 110 is controlled to move along the width of the diaphragm 120, thereby causing the diaphragm 120 to move relative to the support plane, thereby flattening the diaphragm 120 and avoiding problems such as bulging, creases, and uneven material distribution forming vertical stripes on the diaphragm 120. Of the two adjacent shielding members 110, one shielding member 110 can move along the width of the diaphragm 120 while the other shielding member 110 is fixed; alternatively, both shielding members 110 can move along the width of the diaphragm 120.

[0055] There are one or more ultrasonic spray heads 200, each of which moves at least in the width direction of the shielding member 111 and is used to spray the coating liquid onto the membrane 120 within each coating area 121. If the membrane 120 is a battery electrode, an inorganic material can be sprayed onto the electrode to form a solid-state battery. The solid-state battery can be a solid-state lithium battery, which is a secondary battery that relies on the movement of lithium ions between the positive and negative electrodes. The inorganic material is introduced into the battery electrode to enable the electrode to effectively maintain a stable circuit state between the positive and negative electrodes, ensuring the normal operation of the solid-state lithium battery. The inorganic material can effectively reduce the internal resistance between the positive and negative electrodes within the battery, thereby improving the safety of the battery during the charging and discharging process. The inorganic material can prevent the circuit between the positive and negative electrodes from being constant, ensuring the impedance balance of the battery and the long-term stability of the battery. The presence of the inorganic material can enhance the diffusion of lithium ions, ensuring a more efficient charging and discharging process. The battery electrode can be a positive electrode or a negative electrode.

[0056] The ultrasonic spraying device provided by the present invention has a simple structure. Each shielding member 110 is used to effectively shield the non-coating area 121 of the diaphragm 120 to prevent the non-coating area 121 from sticking to the coating liquid, and each shielding member 110 can move up and down in the vertical direction relative to the supporting plane of the carrier 100, so that when each shielding member 110 moves toward the side close to the supporting plane, a diaphragm pressure gap can be formed between the supporting plane to apply pressure to the diaphragm 120 in the diaphragm pressure gap, so that the diaphragm 120 is pressed on the supporting plane, and then the position of the shielding member 110 in the plane parallel to the supporting plane is adjustable to achieve the leveling operation of the diaphragm 120, avoiding problems such as bulging, creases and uneven material distribution forming vertical lines on the diaphragm 120, improving the flatness of the diaphragm 120, and the ultrasonic nozzle can spray the coating liquid to the coating area of ​​the diaphragm to ensure the uniformity of the coating liquid on the diaphragm 120 and improve the product yield of the diaphragm 120.

[0057] In some embodiments, as Figures 2 to 4 As shown, it includes multiple ultrasonic nozzles 200; the ultrasonic spraying device also includes the same number of first support members 300 as the coating areas 121, and each coating area 121 is arranged in a one-to-one correspondence with each first support member 300, each first support member 300 is extended along the length direction of the shielding member 110, and at least one ultrasonic nozzle 200 is arranged on each first support member 300, and each ultrasonic nozzle 200 is arranged side by side on the first support member 300 along the length direction.

[0058] Specifically, the first support member 300 can be a support rod, and one or more ultrasonic nozzles 200 are fixedly provided on each first support member 300. The number of ultrasonic nozzles 200 provided on each first support member 300 can be the same or different. Each ultrasonic nozzle 200 is arranged side by side on the first support member 300 along the length direction of the shielding member 110. The multiple ultrasonic nozzles 200 fixedly provided on the first support member 300 can enable the diaphragm 120 to be coated multiple times during operation, ensuring that the coating area 121 of the diaphragm 120 forms a coating with uniform thickness and density.

[0059] The number of first support members 300 is the same as the number of coating areas 121, and the first support members 300 and the coating areas 121 are arranged in a one-to-one correspondence, so that each coating area 121 of the diaphragm 120 can be coated at the same time, ensuring the coating consistency of each coating area 121 of the diaphragm 120 and improving the processing efficiency of the diaphragm 120.

[0060] In some embodiments, as Figure 2 and Figure 4As shown, second support members 400 are respectively provided at both ends of the first support member 300 . The first support member 300 is slidably provided on the second support member 400 along the width direction of the shielding member 110 , and the second support member 400 spans across each of the coating areas 121 .

[0061] Specifically, the second support member 400 is respectively arranged on both sides along the length direction of the shielding member 110, and the second support member 400 is extended along the width direction of the shielding member 110. The second support member 400 can be a slide rail, and the first support member 300 is slidably connected to the second support member 400 through a slider, so that the first support member 300 can move back and forth along the width direction of the shielding member 110, thereby driving the ultrasonic nozzle 200 fixed on the first support member 300 to move back and forth along the width direction, ensuring that the coating liquid sprayed by the ultrasonic nozzle 200 can completely cover the coating area 121 of the diaphragm 120, thereby improving the yield rate of the diaphragm 120 processing; and can adapt to the coating requirements of diaphragms 120 of different sizes.

[0062] In some embodiments, as Figures 6 to 8 As shown, the ultrasonic nozzle 200 includes an ultrasonic transducer 210, a discharge channel 220 and a blowing channel 230; wherein, the ultrasonic transducer 210 includes an ultrasonic vibration rod 211, the discharge channel 220 is connected to be provided with a discharge nozzle 221, the blowing channel 230 is connected to be provided with a blowing nozzle 231, the discharge nozzle 221 and the blowing nozzle 231 are respectively arranged on both sides of the ultrasonic vibration rod 211, the discharge nozzle 221 is used to provide coating liquid to the ultrasonic vibration rod 211, and the blowing nozzle 231 is used to blow air to the ultrasonic vibration rod 211.

[0063] Specifically, the discharge nozzle 221 provides the coating liquid to the ultrasonic vibration rod 211 through the discharge channel 220, the ultrasonic vibration rod 211 breaks up the coating liquid flowing out of the discharge nozzle 221, and the blowing nozzle 231 blows compressed gas toward the ultrasonic vibration rod 211 to blow the broken up coating liquid into a fan shape. By controlling the air pressure of the compressed gas blown out by the blowing nozzle 231 and the distance between the ultrasonic nozzle 200 and the target object such as the diaphragm 120, the size of the fan shape is controlled to achieve the purpose of controlling the spraying range and shape.

[0064] In some embodiments, at least a portion of the side surface of the ultrasonic vibration rod 211 close to the discharge nozzle 221 is an arc-shaped surface, and at least a portion of the side surface of the ultrasonic vibration rod 211 close to the blowing nozzle 231 is a plane.

[0065] Specifically, the setting of the arc surface can enable the ultrasonic vibration rod 211 to better receive the coating liquid flowing out of the discharge nozzle 221, increase the residence time of the coating liquid on the ultrasonic vibration rod 211, so that the ultrasonic vibration rod 211 can break up the coating liquid more evenly, and during this residence time, compressed gas is blown toward the plane side of the ultrasonic vibration rod 211 through the blowing nozzle 231 to blow the evenly broken coating liquid into a fan shape, and spray the coating liquid onto the coating area 121 of the diaphragm 120, so that the coating area 121 of the diaphragm 120 forms a coating with uniform thickness and density.

[0066] In some embodiments, as Figure 7 As shown, the blowing direction of the blowing nozzle 231 is tilted to the axis of the ultrasonic vibration rod 211.

[0067] Specifically, the blowing nozzle 231 is a straight tube, the axis of which is tilted relative to the axis of the ultrasonic vibration rod 211, so that its blowing direction is tilted to the axis of the ultrasonic vibration rod 211. By setting the blowing direction to be tilted to the axis of the ultrasonic vibration rod 211, the coating liquid broken up by the ultrasonic vibration rod 211 can be blown into a fan shape, and the material coating liquid blown into a fan shape can be evenly sprayed onto the diaphragm 120 to form a uniform coating.

[0068] In some embodiments, as Figures 6 to 8 As shown, the ultrasonic nozzle 200 is fixed on the first support frame 240, and a second support frame 250 is provided at the lower end of the side wall of the first support frame 240 so as to slide along the axial direction of the ultrasonic vibration rod 211. The second support frame 250 includes a vertical segment bracket 251 and a horizontal segment bracket 252 connected by bending, wherein the vertical segment bracket 251 is slidably connected to the first support frame 240, and a third support frame 260 is provided on the side of the horizontal segment bracket 252 away from the first support frame 240;

[0069] The horizontal section bracket 252 and the third support frame 260 are both provided with a center hole, the diameter of which is larger than the diameter of the ultrasonic vibration rod 211. The ultrasonic vibration rod 211 passes through the center holes of the horizontal section bracket 252 and the third support frame 260 in sequence, and is loosely fitted with the center holes.

[0070] Specifically, one end of the ultrasonic nozzle 200 is fixedly mounted on the first support frame 240, and the other end passes through the center holes of the horizontal section bracket 252 and the third support frame 260 in sequence and extends out of the third support frame 260. The third support frame 260 is fixedly connected to the horizontal section bracket 252, and the third support frame 260 is respectively fixed with a blowing nozzle 231 and a discharge nozzle 221. The blowing nozzle 231 and the discharge nozzle 221 are respectively arranged on both sides of the ultrasonic vibration rod 211. The vertical section bracket 251 and the first support frame 240 are slidingly arranged, and the relative position relationship between the ultrasonic vibration rod 211 and the blowing nozzles 231 and the discharge nozzles 221 on both sides can be adjusted so that the coating liquid flowing out of the discharge nozzle 221 can flow to the ultrasonic vibration rod 211, which is convenient for the ultrasonic vibration rod 211 to break up the coating liquid, and the dispersed coating liquid is blown into a fan shape through the blowing nozzle 231. The fan-shaped material coating liquid can be evenly sprayed onto the diaphragm 120 to form a uniform coating.

[0071] In some embodiments, as Figures 6 to 9 As shown, mounting holes are provided on the horizontal section bracket 252 and the third support bracket 260 , and the axes of the mounting holes are arranged parallel to the axis of the center hole; a protective cover 222 is provided outside the discharge nozzle 221 , and the discharge nozzle 221 is installed in the mounting hole through the protective cover 222 .

[0072] Specifically, one end of the discharge nozzle 221 is set toward the ultrasonic vibration rod 211, and the other end passes through the mounting holes on the third support frame 260 and the horizontal section bracket 252 in sequence and is connected to the discharge channel 220; wherein, the discharge nozzle 221 is installed in the mounting hole through the protective cover 222, which facilitates the disassembly and replacement of discharge nozzles 221 of different sizes to meet the use requirements of different liquid discharge amounts of the coating liquid.

[0073] In some embodiments, as Figures 6 to 8 As shown, a limiting groove is provided on the side of the third support frame 260 away from the ultrasonic vibration rod 211, and a limiting bracket 270 is provided in the limiting groove. A circular hole is provided in the limiting bracket 270, and a rotating part is assembled in the circular hole. The rotating part is assembled with the blowing nozzle 231, and the axis of the blowing nozzle 231 is eccentrically arranged with the rotation axis of the rotating part.

[0074] Specifically, the rotating part is rotatably assembled in the circular hole of the limiting bracket 270, thereby driving the blowing nozzle 231 fixedly connected to the rotating part to rotate circumferentially, adjusting the height and angle of the blowing nozzle 231, and then adjusting and controlling the size of the fan and the flight direction of the coating liquid to achieve the purpose of controlling the spraying range, shape and flight angle.

[0075] In some embodiments, as Figure 7 and Figure 10As shown, a pressing block 280 is screwed onto the limiting bracket 270 , and a avoiding opening 281 for avoiding the blowing nozzle 231 is provided on the pressing block 280 .

[0076] Specifically, the pressure block 280 is threadedly connected to the limiting bracket 270, increasing the counterweight of the limiting bracket 270, preventing the blowing nozzle 231 from loosening or falling off due to the vibration of the ultrasonic vibration rod 211, and improving the vibration resistance of the blowing nozzle 231. The pressure block 280 is provided with an arc-shaped avoidance opening 281 on the side near the blowing nozzle 231 to avoid the blowing nozzle 231.

[0077] In some embodiments, as Figure 5 As shown, each shielding member 110 includes a shielding plate 111, and the shielding plate 111 is detachably connected to a buffer pad 112 on the side facing the support plane. The buffer pad 112 extends along the length direction of the shielding plate 111, and the length of the buffer pad 112 is greater than half the length of the shielding plate 111.

[0078] Specifically, the shielding member 110 includes a shielding plate 111. A buffer pad 112 is provided on the side of the shielding plate 111 facing the support plane. The buffer pad 112 can be made of a material such as rubber. The buffer pad 112 is detachably connected to the shielding plate 111. For example, a slot is provided on the side of the shielding plate 111 facing the support plane, and the buffer pad 112 is installed in the slot. The slot can be a trapezoidal slot to ensure that the buffer pad 112 is firmly installed with the shielding plate 111. The buffer pad 112 extends along the length of the shielding plate 111, and the length of the buffer pad 112 is greater than half the length of the shielding plate 111. When the shielding plate 111 is in the second state, the shielding plate 111 is tightly fitted with the diaphragm 120 through the buffer pad 112 to press the diaphragm 120 against the support plane. The provision of the buffer pad 112 can prevent damage to the diaphragm 120 caused by the downward pressure applied by the shielding plate 111, thereby improving the yield rate of the diaphragm 120.

[0079] In some embodiments, as Figure 1 and Figure 4 As shown, a shielding member installation body 130 is provided above the support plane, and each shielding member 110 is installed on the shielding member installation body 130;

[0080] Each of the shielding members 110 is slidably engaged with the shielding member mounting body 130 , and the sliding direction is perpendicular to the length direction of the shielding member 110 ; or,

[0081] Of any two adjacent shielding members 110 , one is in sliding engagement with the shielding member mounting body 130 , and the sliding direction is perpendicular to the length direction of the shielding member 110 , and the other is in fixed engagement with the shielding member mounting body 130 ; or,

[0082] Among the shielding members 110 , some of the shielding members 110 are slidably engaged with the shielding member mounting body 130 , and the sliding direction is perpendicular to the length direction of the shielding member 110 , and the remaining part of the shielding members 110 are fixedly engaged with the shielding member mounting body 130 .

[0083] Specifically, at least one shielding member mounting body 130 is arranged above the support plane, and multiple shielding member mounting bodies 130 are arranged side by side above the support plane in the same direction. The shielding member mounting body 130 can be a support rod extending along the width direction of the diaphragm 120. Exemplarily, the number of shielding member mounting bodies 130 can be 1, 2, 3, etc. Preferably, the number of shielding member mounting bodies 130 is 2, and the two shielding member mounting bodies 130 are arranged on both sides of the support plane along the length direction of the diaphragm 120.

[0084] Each shielding member 110 is mounted on a shielding member mounting body 130. The connection between each shielding member 110 and the shielding member mounting body 130 can be implemented in a variety of ways, and those skilled in the art can configure it according to actual needs. Specifically, the shielding member 110 is fixed with a support frame 180 extending in a direction perpendicular to the support plane. The support frame 180 is slidably or fixedly connected to the shielding member mounting body 130 to achieve a sliding or fixed fit between the shielding member 110 and the shielding member mounting body 130. The sliding connection between the support frame 180 and the shielding member mounting body 130 refers to the following: the support frame 180 is provided with a mounting hole, and the shielding member mounting body 130 passes through the mounting hole of the support frame 180 to achieve the sliding connection between the shielding member mounting body 130 and the support frame 180; or, the shielding member mounting body 130 and the support frame 180 are provided with a slide rail and a slider on one of the shielding member mounting body 130 and the support frame 180, and the support frame 180 and the shielding member mounting body 130 are slidably connected by the slider and the slide rail. Other methods can also be used to achieve the sliding connection between the shielding member 110 and the shielding member mounting body 130. The sliding direction of the shielding member 110 is parallel to the width direction of the shielding member 110 and perpendicular to the length direction of the shielding member 110. The support frame 180 can also be fixedly connected to the shielding member mounting body 130 by welding, screwing, riveting, etc., so as to achieve the fixed connection between the shielding member 110 and the shielding member mounting body 130.

[0085] For example, if each shielding member 110 is slidably connected to the shielding member mounting body 130, the distance between any two adjacent shielding members 110 can be adjusted, and then the position of each shielding member 110 can be adjusted according to the coating area 121 of the diaphragm 120, to meet the cutting requirements of different sizes of the diaphragm 120 and facilitate the leveling operation of the diaphragm 120. For example, three shielding members 110 are slidably installed on the shielding member mounting body 130, namely the first shielding member, the second shielding member and the third shielding member, wherein the second shielding member is located between the first shielding member and the third shielding member, and the three shielding members 110 slide on the shielding member mounting body 130, so that the first shielding member and the third shielding member are respectively located in the blank areas 122 on both sides of the diaphragm 120, and the second shielding member is located in the blank area 122 in the middle of the diaphragm 120, so as to effectively block the blank area 122 of the diaphragm 120 and prevent the blank area 122 from sticking to the coating liquid, and the first shielding member and the third shielding member are respectively in a pressed fit state with the diaphragm 120, and the leveling operation of the diaphragm 120 is realized by controlling at least one of the first shielding member and the third shielding member 110 to move toward the side away from the supporting plane.

[0086] For example, if there are any two adjacent shielding members 110, one of them is fixedly matched with the shielding member mounting body 130, and the fixedly matched shielding member 110 is located in the blank area 122 of the diaphragm 120, and the other is slidably matched with the shielding member mounting body 130, and the slidably matched shielding member 110 adaptively adjusts the position of the shielding member 110 according to the coating area 121 of the diaphragm 120, so that the coating area 121 is formed between the two adjacent shielding members 110. For example, if three shielding members 110 are installed on the shielding member mounting body 130, namely the first shielding member, the second shielding member and the third shielding member, wherein the second shielding member is located between the first shielding member and the third shielding member, the first shielding member and the third shielding member are slidably matched with the shielding member mounting body 130 respectively, the second shielding member is fixedly matched with the shielding member mounting body 130, and the second shielding member can be located in the blank area 122 in the middle position of the diaphragm 120, and the first shielding member and the third shielding member can be adjusted according to different models. The position of the diaphragm 120 is adjusted so that the first shielding member and the third shielding member are located in the blank areas 122 on both sides of the diaphragm 120 to effectively shield the blank areas 122 of the diaphragm 120 to prevent the blank areas 122 from sticking to the coating liquid, and the first shielding member and the third shielding member are respectively in a pressed fit state with the diaphragm 120, and the leveling operation of the diaphragm 120 is achieved by controlling at least one shielding member 110 of the first shielding member and the third shielding member to move toward the side away from the supporting plane.

[0087] Exemplarily, in each shielding member 110, part of the shielding member 110 is in sliding engagement with the shielding member mounting body 130, and the remaining part of the shielding member 110 is fixedly engaged with the shielding member mounting body 130. For example, four shielding members 110 are mounted on the shielding member mounting body 130, namely, a first shielding member, a second shielding member, a third shielding member, and a fourth shielding member, which are arranged in sequence. The first shielding member, the second shielding member, and the fourth shielding member are in sliding engagement with the shielding member mounting body 130, and the third shielding member is fixedly engaged with the shielding member mounting body 130. The third shielding member can be located in the blank area 122 of the diaphragm 120. The first shielding member, the second shielding member, and the fourth shielding member can be adjusted in position according to the coating area 121 of the diaphragm 120 to meet the cutting requirements of the diaphragm 120 in different sizes.

[0088] In some embodiments, as Figures 1 to 3 As shown, the shielding member 110 that is slidably matched with the shielding member mounting body 130 is connected to at least one first linear driving member 140 , and the first linear driving member 140 is disposed on the shielding member mounting body 130 .

[0089] Specifically, a first linear drive member 140 is fixedly mounted on the shielding member mounting body 130. The first linear drive member 140 can be a motor, a cylinder, an electric push rod, etc. The shielding member 110, which is slidably engaged with the shielding member mounting body 130, is connected to at least one first linear drive member 140. The first linear drive member 140 drives the corresponding shielding member 110 to move linearly along the width direction of the diaphragm 120, thereby achieving adjustable position of the shielding member 110 parallel to the support plane. The number of first linear drives 140 connected to the slidable shielding member 110 can be set according to actual needs. For example, two first linear drives 140 can be connected to the slidable shielding member 110 to improve the force applied to the corresponding shielding member 110.

[0090] In some embodiments, as Figure 1 and Figure 4 As shown, at least one second linear driving member 150 is connected to the shielding member mounting body 130 to drive the shielding member mounting body 130 to move linearly along a direction perpendicular to the supporting plane.

[0091] Specifically, the second linear drive member 150 may be a motor, a cylinder, an electric push rod, etc. One or more second linear drives 150 are connected to the shielding member mounting body 130. When one second linear drive member 150 is connected to the shielding member mounting body 130, the second linear drive member 150 may be located in the middle of the shielding member mounting body 130. When two second linear drives 150 are connected to the shielding member mounting body 130, the two second linear drives 150 may be located at both ends of the shielding member mounting body 130. When three or more second linear drives 150 are connected to the shielding member mounting body 130, the plurality of second linear drives 150 may be evenly distributed on the shielding member mounting body 130. The second linear drive member 150 can drive the shielding member mounting body 130 to move up and down in a direction perpendicular to the support plane, thereby driving the shielding member 110 to move up and down, thereby switching the shielding member 110 between the first state and the second state.

[0092] In some embodiments, the carrier 100 is provided with an electric heating element; or,

[0093] A heat exchange chamber 170 is provided on the carrier 100 . The heat exchange chamber 170 has a heat exchange medium inlet and a heat exchange medium outlet. A heat exchange medium circulation device is provided between the heat exchange medium inlet and the heat exchange medium outlet.

[0094] Specifically, the carrier 100 has two heating methods to heat the membrane 120 on the support plane of the carrier 100, ensuring uniformity of the membrane 120 during coating and allowing the coating liquid to be evenly distributed in the coating area 121 of the membrane 120. For example, the carrier 100 can be provided with an electric heating element, which can be a resistance wire, and the resistance wire generates heat to heat the membrane 120 on the support plane of the carrier 100.

[0095] Or, as Figures 1 to 4 As shown, a heat exchange chamber 170 is provided on the carrier 100. The heat exchange chamber 170 has a heat exchange medium inlet and a heat exchange medium outlet. A heat exchange medium, such as a high-temperature liquid or a high-temperature gas, can be injected into the heat exchange chamber 170 through the heat exchange medium inlet. The heat exchange medium can exchange heat with the diaphragm 120 to achieve heating of the diaphragm 120, which is beneficial to the uniformity of the coating on the diaphragm 120; the heat exchange medium after heat exchange, that is, the cooled medium is discharged through the heat exchange medium outlet.

[0096] A heat exchange medium circulation device is provided between the heat exchange medium inlet and outlet. This device circulates the heat exchange medium within the heat exchange chamber 170 to continuously heat the diaphragm 120. The heat exchange medium circulation device can be a fan or pump. The fan can be a blower, exhaust fan, or negative pressure fan, etc.; the pump can be a vacuum pump or liquid extraction pump, etc. Negative pressure fans and vacuum pumps can also achieve negative pressure adsorption and fixation of the diaphragm 120 on the support surface.

[0097] It should be noted that the ultrasonic spraying device provided in the embodiment of the present application also includes a vacuum adsorption component, which includes a negative pressure pump and a suction pipe. The negative pressure pump is connected to the adsorption hole on the supporting plane through the suction pipe. The negative pressure pump can realize negative pressure adsorption and fixation of the diaphragm 120 on the supporting plane, so that the diaphragm 120 is firmly fixed on the supporting plane.

[0098] In some embodiments, as Figure 3 and Figure 4 As shown, the ultrasonic spraying device also includes a third linear drive member 190, which is fixedly connected to the electric heating member or the heat exchange chamber 170 to drive the electric heating member or the heat exchange chamber 170 to move linearly in a direction perpendicular to the support plane.

[0099] Specifically, the third linear drive member 190 can be a motor, a cylinder, an electric push rod, etc. The third drive member is fixedly connected to the electric heating element or the heat exchange chamber 170 to drive the heating element or the heat exchange chamber 170 to move up and down, thereby driving the diaphragm 120 on the supporting plane to move up and down.

[0100] In some embodiments, the ultrasonic spraying device further includes a flatness detection mechanism, and the flatness detection mechanism is used to detect the flatness of the diaphragm 120 pressed on the supporting plane.

[0101] Specifically, the leveling detection mechanism can detect the flatness of the diaphragm 120 on the supporting plane. When it is detected that the flatness of the diaphragm 120 is poor, the shielding member 110 can be controlled to move again to perform a leveling operation on the diaphragm 120 until the flatness of the diaphragm 120 is qualified.

[0102] In some embodiments, as Figures 1 to 3 As shown, the flatness detection mechanism includes a laser signal transmitter 160 and a laser signal receiver 161, and the signal transmitter and the signal receiver are respectively placed on both sides of the carrier 100. The laser signal transmitter 160 is used to emit surface laser, and the surface laser is parallel to the supporting plane. Moreover, in the second state, the surface laser is located above the supporting plane and the distance from the supporting plane is less than 2 mm.

[0103] Specifically, the flatness detection mechanism includes a laser signal transmitter 160 and a laser signal receiver 161. The laser signal transmitter 160 and the laser signal receiver 161 are respectively arranged on both sides of the carrier 100 along the running direction of the diaphragm 120. The laser signal transmitter 160 can emit a surface laser. The plane where the surface laser is located is parallel to the support plane, and the plane where the surface laser is located can completely cover the plane where the diaphragm 120 is located on the support plane. The distance between the surface laser and the support plane is less than 2 mm, for example, 1.5 mm, 1.2 mm, 1.0 mm, 0.8 mm , 0.5mm, 0.3mm, etc., to ensure that the surface laser signal emitted by the laser signal transmitter 160 can completely cover the diaphragm 120, and the laser signal receiver 161 can receive the surface laser signal emitted by the laser signal transmitter 160. If the surface laser signal received by the laser signal receiver 161 is a continuous signal, the flatness of the diaphragm 120 is better; if the surface laser signal received by the laser signal receiver 161 is an intermittent signal, it means that the diaphragm 120 has problems such as bulging, and the propagation of the laser signal will be blocked at the bulge position, indicating that the flatness of the diaphragm 120 is poor.

[0104] It can be understood that the ultrasonic spraying device can also include an unwinding mechanism and a rewinding mechanism. The unwinding mechanism and the rewinding mechanism are respectively arranged on both sides of the carrier 100 along the running direction of the diaphragm 120. The unwinding mechanism is used to unwind the diaphragm 120, and the rewinding mechanism is used to rewind the coated diaphragm 120, so that the diaphragm 120 can automatically and smoothly pass through the supporting plane of the carrier 100, realize automation, improve efficiency and save costs.

[0105] The following takes a battery electrode as an example to illustrate the ultrasonic spraying of a battery electrode by the ultrasonic spraying device provided in an embodiment of the present application, as follows:

[0106] S210: The third linear drive member 190 drives the electric heating element or the heat exchange chamber 170 to move downward in a direction perpendicular to the support plane of the carrier 100 to a first position. The unwinding mechanism and the rewinding mechanism control the quantitative delivery of the battery electrode sheet to the support plane of the carrier 100. The third linear drive member 190 then controls the electric heating element or the heat exchange chamber 170 to move upward in a direction perpendicular to the support plane of the carrier 100 to a second position. The height corresponding to the second position is greater than the height corresponding to the first position.

[0107] S220: The second linear drive member 150 drives each shielding member 110 to move downward in a direction perpendicular to the support plane of the carrier 100 until each shielding member 110 is tightly fitted with the surface of the battery electrode, so that the battery electrode is pressed against the support plane;

[0108] S230: The first linear driving member 140 drives each shielding member 110 to move outward along the width direction of the battery electrode sheet, so as to drive the battery electrode sheet to move relative to the supporting plane, thereby achieving a leveling operation of the battery electrode sheet;

[0109] S240: Using a flatness detection mechanism to detect the flatness of the flattened battery electrode sheet. If the flatness of the battery electrode sheet passes the test, the vacuum suction component is turned on to firmly fix the battery electrode sheet on the supporting plane, and an ultrasonic nozzle is used to spray the inorganic material onto the coating area 121 of the battery electrode sheet. During the process of spraying the inorganic material, the battery electrode sheet is heated to ensure uniformity of the inorganic material coating.

[0110] S250: If the flatness test of the battery electrode sheet fails, step S230 is executed to flatten the battery electrode sheet again until the flatness test of the battery electrode sheet passes.

[0111] The ultrasonic spraying device provided in the embodiments of the present application can achieve automatic leveling, automatic adsorption, and automated spraying of battery pole pieces, with a high degree of automation and improved work efficiency. Compared with the existing direct vacuum adsorption of battery pole pieces that may cause bulging and other problems, the present application first flattens the battery pole pieces and then vacuum adsorbs them. This can better solve the problems of bulging, creases, and uneven material distribution forming vertical lines caused by vacuum adsorption on the battery pole pieces, and ensure the flatness of the battery pole pieces when adsorbed on the supporting surface.

[0112] The above description is merely a preferred embodiment of the present application and an illustration of the technical principles employed. Those skilled in the art should understand that the scope of the utility model disclosed in this application is not limited to the technical solutions formed by the specific combination of the above-mentioned technical features, but also encompasses other technical solutions formed by any combination of the above-mentioned technical features or their equivalents without departing from the concept of the utility model. For example, a technical solution formed by replacing the above-mentioned features with (but not limited to) technical features with similar functions disclosed in this application.

Claims

1. An ultrasonic spraying device, characterized in that, include: A carrier (100), the carrier (100) having a supporting plane, the supporting plane being provided with a plurality of adsorption holes; At least two shielding members (110) are arranged side by side in the same direction above the support plane, and a coating area (121) is formed between any two adjacent shielding members (110); In a direction perpendicular to the support plane, each shielding member (110) has a first state away from the support plane and a second state close to the support plane, and in the second state, a diaphragm pressure gap is formed between each shielding member (110) and the support plane, for pressing the diaphragm (120) onto the support plane; The position of at least one of any two adjacent shielding members (110) in a plane parallel to the support plane is adjustable to flatten the diaphragm (120) pressed on the support plane; At least one ultrasonic nozzle (200), the ultrasonic nozzle (200) being movable at least in the width direction of the shielding member (110) and being used for spraying coating liquid onto the diaphragm (120) within each coating area (121).

2. The ultrasonic spraying device according to claim 1, characterized in that comprising a plurality of ultrasonic nozzles (200); The ultrasonic spraying device further includes first support members (300) having the same number as the coating areas (121), and each coating area (121) is arranged in a one-to-one correspondence with each first support member (300), each first support member (300) is extended along the length direction of the shielding member (110), and each first support member (300) is provided with at least one ultrasonic nozzle (200), and each ultrasonic nozzle (200) is arranged side by side on the first support member (300) along the length direction.

3. The ultrasonic spraying device according to claim 2, characterized in that Second support members (400) are respectively provided at both ends of the first support member (300), the first support member (300) is slidably provided on the second support member (400) along the width direction of the shielding member (110), and the second support member (400) spans each of the coating areas (121).

4. The ultrasonic spraying device according to claim 1, characterized in that The ultrasonic nozzle (200) comprises an ultrasonic transducer (210), a discharge channel (220) and an air blowing channel (230); wherein the ultrasonic transducer (210) comprises an ultrasonic vibration rod (211), the discharge channel (220) is connected to a discharge nozzle (221), the air blowing channel (230) is connected to a blow nozzle (231), the discharge nozzle (221) and the air blowing nozzle (231) are respectively arranged on both sides of the ultrasonic vibration rod (211), the discharge nozzle (221) is used to provide a coating liquid to the ultrasonic vibration rod (211), and the air blowing nozzle (231) is used to blow air to the ultrasonic vibration rod (211).

5. The ultrasonic spraying device according to claim 4, characterized in that: At least part of the side surface of the ultrasonic vibration rod (211) close to the discharge nozzle (221) is an arc-shaped surface, and at least part of the side surface of the ultrasonic vibration rod (211) close to the blowing nozzle (231) is a plane.

6. The ultrasonic spraying device according to claim 4, characterized in that: The blowing direction of the blowing nozzle (231) is arranged obliquely to the axis of the ultrasonic vibration rod (211).

7. The ultrasonic spraying device according to any one of claims 4 to 6, characterized in that: The ultrasonic nozzle (200) is fixed on a first support frame (240), and a second support frame (250) is provided at the lower end of the side wall of the first support frame (240) so as to slide along the axial direction of the ultrasonic vibration rod (211), and the second support frame (250) includes a vertical section support (251) and a horizontal section support (252) connected by bending, wherein the vertical section support (251) is slidably connected to the first support frame (240), and a third support frame (260) is provided on the side of the horizontal section support (252) away from the first support frame (240); The horizontal section bracket (252) and the third support bracket (260) are both provided with a center hole, the diameter of the center hole being larger than the diameter of the ultrasonic vibration rod (211), and the ultrasonic vibration rod (211) passes through the center holes of the horizontal section bracket (252) and the third support bracket (260) in sequence, and is loosely fitted with the center holes.

8. The ultrasonic spraying device according to claim 7, characterized in that: The horizontal section bracket (252) and the third support bracket (260) are provided with mounting holes, and the axes of the mounting holes are arranged parallel to the axis of the central hole; a protective sleeve (222) is provided outside the discharge nozzle (221), and the discharge nozzle (221) is installed in the mounting hole through the protective sleeve (222).

9. The ultrasonic spraying device according to claim 7, characterized in that: A limiting groove is provided on a side of the third support frame (260) away from the ultrasonic vibration rod (211), a limiting bracket (270) is provided in the limiting groove, a circular hole is provided in the limiting bracket (270), a rotating part is installed in the circular hole, the rotating part is installed with the blowing nozzle (231), and the axis of the blowing nozzle (231) is eccentrically arranged with the rotation axis of the rotating part.

10. The ultrasonic spraying device according to claim 9, characterized in that: A pressing block (280) is screwed onto the limiting bracket (270), and a relief opening (281) for avoiding the blowing nozzle (231) is provided on the pressing block (280).

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