Membrane leveling adsorption equipment and spraying device

Abstract

The utility model belongs to the technical field of leveling, and discloses a diaphragm leveling adsorption device and a spraying device, the diaphragm leveling adsorption device comprises: a bearing member, the bearing member is provided with a support plane, and the support plane is provided with a plurality of adsorption holes; 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 membrane pressing gap is formed between each shielding piece and the supporting plane and used for pressing a membrane to be coated on the supporting plane; and 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 to-be-coated diaphragm pressed on the supporting plane is leveled. According to the equipment, the leveling operation on the diaphragm can be realized, the problems of bumps, creases, vertical lines formed by non-uniform material distribution and the like of the diaphragm are avoided, and the flatness of the diaphragm is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of leveling, and in particular relates to a membrane leveling adsorption device and a spraying device. Background Art

[0002] The diaphragm needs to be fixed by vacuum adsorption to achieve uniform coating of the coating material on the diaphragm. If the diaphragm is directly fixed by vacuum adsorption, problems such as bulging, creases, and uneven distribution of material to form vertical lines will occur on the diaphragm, affecting 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 a membrane leveling adsorption device and a spraying device.

[0004] In a first aspect, the present invention provides a membrane leveling adsorption 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 film pressure gap is formed between each of the shielding members and the supporting plane, for pressing the film to be coated 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 so as to flatten the film to be coated pressed on the supporting plane.

[0009] The diaphragm leveling adsorption device provided by the utility model has a simple structure and can realize the leveling operation of 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.

[0010] In addition, the membrane leveling adsorption device of the present invention may also have the following additional technical features:

[0011] Preferably, each of the shielding members includes a shielding plate, and a buffer pad is detachably connected to the side of the shielding plate facing the supporting plane. The buffer pad extends along the length direction of the shielding plate, and the length of the buffer pad is greater than half the length of the shielding plate.

[0012] Preferably, a shielding member installation body is provided above the support plane, and each shielding member is installed on the shielding member installation body;

[0013] Each of the shielding members is slidably engaged with the shielding member mounting body, and the sliding direction is perpendicular to the length direction of the shielding member; or,

[0014] Of any two adjacent shielding members, one is in sliding engagement with the shielding member mounting body, and the sliding direction is perpendicular to the length direction of the shielding member, and the other is fixedly engaged with the shielding member mounting body; or,

[0015] In each of the shielding members, part of the shielding members is in sliding cooperation with the shielding member mounting body, and the sliding direction is perpendicular to the length direction of the shielding member, and the remaining part of the shielding members is in fixed cooperation with the shielding member mounting body.

[0016] Preferably, the shielding member that is slidably matched with the shielding member mounting body is connected to at least one first linear driving member, and the first linear driving member is provided on the shielding member mounting body.

[0017] Preferably, the device further comprises a second linear driving member, wherein the second linear driving member is fixedly connected to the shielding member mounting body to drive the shielding member mounting body to move linearly in a direction perpendicular to the supporting plane.

[0018] Preferably, the carrier is provided with an electric heating element; or,

[0019] A heat exchange cavity is provided on the carrier. The heat exchange cavity 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.

[0020] Preferably, the device further comprises a third linear drive member, which is fixedly connected to the electric heating member or the heat exchange chamber to drive the electric heating member or the heat exchange chamber to move linearly in a direction perpendicular to the support plane.

[0021] Preferably, the device further comprises a flatness detection mechanism, and the flatness detection mechanism is used to detect the flatness of the film to be coated pressed on the supporting plane.

[0022] Preferably, the flatness detection mechanism includes a laser signal transmitter and a laser signal receiver, and the signal transmitter and the signal receiver are respectively placed on both sides of the carrier. The laser signal transmitter 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.

[0023] A second aspect of the present invention provides a spraying device, which includes the membrane leveling adsorption device described in any embodiment of the present application.

[0024] 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

[0025] 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:

[0026] Figure 1 A top view of the membrane leveling adsorption device provided in an embodiment of the present application;

[0027] Figure 2 A front view of the membrane leveling adsorption device provided in an embodiment of the present application;

[0028] Figure 3 A left side view of the membrane leveling adsorption device provided in an embodiment of the present application;

[0029] Figure 4 This is a diagram of the matching structure of the shielding member and the diaphragm provided in an embodiment of the present application.

[0030] In the above picture:

[0031] 100 bearing member; 110 shielding member; 111 shielding plate; 112 buffer pad; 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. DETAILED DESCRIPTION

[0032] 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.

[0033] 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.

[0034] 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.

[0035] 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."

[0036] 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.

[0037] 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.

[0038] 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.

[0039] In order to solve the above technical problems, Figures 1 to 3 As shown, the first aspect of the present invention provides a membrane leveling adsorption device, comprising:

[0040] A carrier 100, wherein the carrier 100 has a support plane, and the support plane is provided with a plurality of adsorption holes;

[0041] 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;

[0042] 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 film pressure gap is formed between each of the shielding members 110 and the supporting plane, for pressing the film 120 to be coated onto the supporting plane.

[0043] 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 film sheet 120 to be coated that is pressed on the supporting plane.

[0044] 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 film 120 to be coated 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 film 120 to be coated when it is adsorbed, thereby ensuring the flatness of the film 120 to be coated.

[0045] 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 film to be coated 120 can be coated in the coating area 121. The shielding member 110 is located in the non-coating area 121 of the film to be coated 120. The non-coating area 121 can be a blank area 122 of the film to be coated 120, and no coating operation is performed in the blank area 122. For example, if the membrane 120 to be coated 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 cutting of the battery electrode to cut out battery electrodes of the required size, and a tab mounting position for the battery electrode can be formed in the blank areas 122. The shielding member 110 is arranged directly above the tab mounting position to prevent the 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. 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.

[0046] 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 separated from the supporting plane, which is convenient for placing the film 120 to be coated on the supporting plane; in the second state, a film pressure gap is formed between each shielding member 110 and the supporting plane, and the film pressure gap matches the thickness of the film 120 to be coated, and each shielding member 110 is pressed on the surface of the film 120 to be coated so that the film 120 to be coated is tightly fitted with the supporting plane.

[0047] At least one of any two adjacent shielding members 110 can move 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 film 120. When the film 120 to be coated and each shielding member 110 are in a compressed state, the shielding member 110 is controlled to move along the width of the film 120 to be coated, so that the film 120 to be coated moves relative to the support plane, thereby achieving a flattening operation on the film 120 to be coated, thereby avoiding problems such as bulging, creases, and uneven material distribution forming vertical stripes on the film 120 to be coated. Of the two adjacent shielding members 110, one shielding member 110 can move along the width of the film 120 while the other shielding member 110 is fixed; alternatively, both shielding members 110 can move along the width of the film 120.

[0048] The diaphragm leveling and adsorption equipment 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 material, 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 to be coated in the diaphragm pressure gap, so that the diaphragm 120 to be coated is pressed on the supporting plane, and then the position of the shielding member 110 in a plane parallel to the supporting plane is adjustable to achieve the leveling operation of the diaphragm 120, avoid problems such as bulging, creases and uneven material distribution forming vertical lines on the diaphragm 120, improve the flatness of the diaphragm 120, and thus ensure the uniformity of the coating material on the diaphragm 120, and improve the product yield of the diaphragm 120.

[0049] In some embodiments, as Figure 4 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.

[0050] 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 rubber or other materials. 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 film to be coated 120 through the buffer pad 112 to press the film to be coated 120 against the support plane. The provision of the buffer pad 112 can prevent damage to the film 120 caused by the downward pressure applied by the shielding plate 111, thereby improving the yield rate of the film 120.

[0051] In some embodiments, as Figure 1 and Figure 3 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;

[0052] 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,

[0053] 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,

[0054] 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 .

[0055] 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.

[0056] 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.

[0057] As an 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, 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 support plane.

[0058] 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 and prevent the blank areas 122 from sticking to the coating material, 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.

[0059] 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.

[0060] 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 .

[0061] 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.

[0062] In some embodiments, as Figure 2 and Figure 3 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.

[0063] 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.

[0064] In some embodiments, the carrier 100 is provided with an electric heating element; or,

[0065] 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.

[0066] 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, so that the coating material can 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.

[0067] Or, as Figures 1 to 3 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.

[0068] 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.

[0069] It should be noted that the diaphragm leveling adsorption equipment 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.

[0070] In some embodiments, as Figure 2 and Figure 3 As shown, the 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.

[0071] 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.

[0072] In some embodiments, the device further includes a flatness detection mechanism, which is used to detect the flatness of the film to be coated 120 pressed on the supporting plane.

[0073] Specifically, the leveling detection mechanism can detect the flatness of the film to be coated 120 on the supporting plane. When it is detected that the flatness of the film to be coated 120 is not good, the shielding member 110 can be controlled to move again to perform the leveling operation of the film to be coated 120 until the flatness of the film to be coated 120 is qualified.

[0074] In some embodiments, as Figure 1 and Figure 2 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.

[0075] 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.

[0076] A second aspect of the present invention provides a spraying device, which includes the membrane leveling adsorption device described in any embodiment of the present application.

[0077] Specifically, the specific technical features and technical effects of the spraying device of the present application are consistent with those of the membrane leveling adsorption equipment, and will not be repeated in this application.

[0078] It is understood that the spraying device of the present application may also include a spraying device, which sprays the coating material onto the coating area 121 of the membrane 120. 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 introduction of the inorganic material into the battery electrode enables the electrode to effectively maintain a stable circuit state between the positive and negative electrodes, allowing the solid-state lithium battery to operate normally. 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 effect of lithium ions, ensuring a more efficient charging and discharging process. The battery electrode can be a positive electrode or a negative electrode.

[0079] It can be understood that the 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 to be coated, 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.

[0080] The following uses a battery electrode as an example to illustrate a method 200 for leveling a battery electrode using a membrane leveling adsorption device provided in an embodiment of the present application:

[0081] 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.

[0082] 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;

[0083] 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;

[0084] 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 inorganic material is sprayed onto the coating area 121 of the battery electrode sheet using a spraying device. During the process of spraying the inorganic material, the battery electrode sheet is heated to ensure uniformity of the inorganic material coating.

[0085] 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.

[0086] The membrane flattening and adsorption equipment 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 on the battery pole pieces caused by vacuum adsorption, and ensure the flatness of the battery pole pieces when adsorbed on the support surface.

[0087] 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. A membrane leveling adsorption 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. In the second state, a diaphragm pressure gap is formed between each shielding member (110) and the support plane, for pressing the diaphragm (120) to be coated onto the support plane. 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 film (120) to be coated that is pressed on the supporting plane.

2. The membrane leveling adsorption device according to claim 1, characterized in that: Each shielding member (110) comprises a shielding plate (111), wherein a side of the shielding plate (111) facing the support plane is detachably connected to a buffer pad (112), and 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).

3. The membrane leveling adsorption device according to claim 1, characterized in that: 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); 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, 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, Among the shielding members (110), part 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), and the remaining part of the shielding members (110) is fixedly engaged with the shielding member mounting body (130).

4. The membrane leveling adsorption device according to claim 3, characterized in that: The shielding member (110) that is slidably engaged 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 arranged on the shielding member mounting body (130).

5. The membrane leveling adsorption device according to claim 4, characterized in that: The device further comprises a second linear drive member (150), wherein the second linear drive member (150) is fixedly connected to the shielding member mounting body (130) to drive the shielding member mounting body (130) to move linearly in a direction perpendicular to the support plane.

6. The membrane leveling adsorption device according to claim 1, characterized in that: The carrier (100) is provided with an electric heating element; or, A heat exchange chamber (170) is provided on the carrier (100), the heat exchange chamber (170) having a heat exchange medium inlet and a heat exchange medium outlet, and a heat exchange medium circulation device is provided between the heat exchange medium inlet and the heat exchange medium outlet.

7. The membrane leveling adsorption device according to claim 6, characterized in that: The device further comprises a third linear drive member (190), wherein the third linear drive member (190) 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.

8. The membrane leveling adsorption device according to any one of claims 1 to 7, characterized in that: The device further comprises a flatness detection mechanism, which is used to detect the flatness of the film (120) to be coated pressed on the supporting plane.

9. The membrane leveling adsorption device according to claim 8, characterized in that: The flatness detection mechanism comprises a laser signal transmitter (160) and a laser signal receiver (161), wherein the signal transmitter and the signal receiver are respectively disposed on two sides of the carrier (100), and the laser signal transmitter (160) is used to emit a surface laser, wherein the surface laser is parallel to the supporting plane, and, in the second state, the surface laser is located above the supporting plane and is less than 2 mm away from the supporting plane.

10. A spraying device, characterized in that: The device comprises the membrane flattening adsorption equipment according to any one of claims 1 to 9.

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