Clamping mechanism, cutting device, film coating equipment and battery production system

Abstract

The utility model discloses a clamping mechanism, a cutting device, film wrapping equipment and a battery production system. The clamping mechanism is used for clamping a protective film wrapping the outer side of a battery cell. Wherein the protective film is provided with an inner surface facing the battery cell and an outer surface deviating from the battery cell. The clamping mechanism comprises a first clamping piece and a second clamping piece, and the first clamping piece is provided with a first clamping surface; the first clamping piece is provided with a first clamping surface, the second clamping piece is provided with a second clamping surface, the second clamping surface is used for being matched with the first clamping surface to clamp the protective film, the first clamping surface corresponds to the outer surface, and the second clamping surface corresponds to the inner surface; the first clamping face is provided with an air suction hole, and / or the second clamping face is provided with an air blowing hole. According to the technical scheme, the film coating effect of the battery can be improved.

Description

Technical Field

[0001] The utility model relates to the technical field of battery manufacturing, in particular to a clamping mechanism, a cutting device, a film coating device and a battery production system. Background Art

[0002] At present, during the coating process of the battery cell, a cutting device is usually required to clamp and cut the protective film to separate the protective films on the adjacent two sides to facilitate the subsequent folding of the coating. However, since the outer side of the protective film is not sticky but the inner side is sticky, when the clamping mechanism in the cutting device releases the protective film after the cutting is completed, the protective film will stick to the clamping piece on the inner side of the corresponding protective film in the clamping mechanism due to uneven force. In this way, when the clamping mechanism is reset and opened, the protective film will be pulled and offset, resulting in wrinkles in the subsequent coating and affecting the coating effect of the battery. Utility Model Content

[0003] The main purpose of the present application is to provide a clamping mechanism to improve the coating effect of the battery.

[0004] To achieve the above-mentioned purpose, the clamping mechanism proposed in the present application is used to clamp the protective film coated on the outside of the battery cell, the protective film has an inner surface facing the battery cell and an outer surface away from the battery cell, and the clamping mechanism includes:

[0005] a first clamping member, the first clamping member having a first clamping surface; and

[0006] A second clamping member, the second clamping member having a second clamping surface, the second clamping surface is used to cooperate with the first clamping surface to clamp the protective film, the first clamping surface corresponds to the outer surface, and the second clamping surface corresponds to the inner surface;

[0007] Wherein, the first clamping surface is provided with an air suction hole, and / or the second clamping surface is provided with an air blowing hole.

[0008] When the clamping mechanism in the technical solution of the present application is in use, since the first clamping surface of the first clamping member is provided with an air suction hole, and / or the second clamping surface of the second clamping member is provided with an air blowing hole, negative pressure suction can be formed between the first clamping surface and the protective film, and / or positive pressure blowing can be formed between the second clamping surface and the protective film. In this way, the adhesive force of the inner surface of the protective film can be offset by negative pressure suction and / or positive pressure blowing, so that the clamping mechanism can be smoothly separated from the protective film when opened, avoiding the phenomenon that the clamping mechanism pulls the protective film and causes it to deviate, resulting in wrinkles during subsequent coating, thereby improving the coating effect of the battery.

[0009] Optionally, there are multiple air intake holes.

[0010] This is beneficial to improving the air extraction efficiency between the first clamping surface and the protective film, thereby improving the separation efficiency of the clamping mechanism and the protective film and improving the coating efficiency of the battery.

[0011] Optionally, the plurality of air suction holes include a plurality of rows of air suction holes, and each row of air suction holes includes a plurality of air suction holes.

[0012] Thus, the limited area of ​​the first clamping surface can be fully utilized to distribute as many air suction holes as possible, thereby further improving the air extraction efficiency between the first clamping surface and the protective film. At the same time, it is also beneficial to improve the convenience of processing and forming multiple air suction holes.

[0013] Optionally, a plurality of first air extraction channels are provided in the first clamping member, each first air extraction channel is provided corresponding to a row of air suction holes, and a plurality of air suction holes in each row are connected to the corresponding first air extraction channel;

[0014] A second air extraction channel is also provided in the first clamping member, and the same end of the plurality of first air extraction channels is connected to the second air extraction channel.

[0015] Therefore, the pipeline connection structure between the first clamping member and the air extraction mechanism can be greatly simplified, thereby facilitating the manufacturing convenience of the coating equipment.

[0016] Optionally, one end of the first air extraction channel away from the second air extraction channel has a first opening penetrating the first clamping member, and the clamping mechanism further includes a first sealing member, which seals the first opening.

[0017] Thus, the convenience of forming the first air suction channel can be improved while ensuring the sealing performance of the first air suction channel.

[0018] Optionally, one end of the second air extraction channel is connected to a first air extraction channel, and the other end has a second opening that penetrates the first clamping member.

[0019] Thus, the convenience of forming the second air suction channel can be improved while ensuring the sealing performance of the second air suction channel.

[0020] Optionally, the clamping mechanism further includes a first air nozzle, and the first air nozzle is installed at the second opening.

[0021] Thus, it is convenient to connect with the pipeline connected to the air extraction mechanism.

[0022] Optionally, there are multiple blowing holes.

[0023] This is beneficial to improving the blowing efficiency between the second clamping surface and the protective film, so as to improve the separation efficiency between the clamping mechanism and the protective film and improve the coating efficiency of the battery.

[0024] Optionally, the plurality of blowing holes include a plurality of rows of blowing holes, and each row of blowing holes includes a plurality of blowing holes.

[0025] Thus, the limited area of ​​the second clamping surface can be fully utilized to distribute as many blowing holes as possible, thereby further improving the blowing efficiency between the second clamping surface and the protective film. At the same time, it is also beneficial to improve the convenience of processing and forming multiple blowing holes.

[0026] Optionally, a plurality of first blowing channels are provided in the second clamping member, each first blowing channel is provided corresponding to a row of blowing holes, and a plurality of blowing holes in each row are connected to the corresponding first blowing channel;

[0027] A second air blowing channel is also provided in the second clamping member, and the same end of the plurality of first air blowing channels is connected to the second air blowing channel.

[0028] Therefore, the pipeline connection structure between the second clamping member and the blowing mechanism can be greatly simplified, thereby facilitating the manufacturing convenience of the coating equipment.

[0029] Optionally, one end of the first blowing channel away from the second blowing channel has a first opening penetrating the second clamping member, and the clamping mechanism further includes a second sealing member, which seals the first opening.

[0030] Thereby, the convenience of forming the first air blowing channel can be improved, and the sealing performance of the first air blowing channel can be ensured.

[0031] Optionally, one end of the second blowing channel is connected to one of the first blowing channels, and the other end has a second opening penetrating the second clamping member.

[0032] Thus, the convenience of forming the second air suction channel can be improved, and the sealing performance of the second air suction channel can be ensured.

[0033] Optionally, the clamping mechanism further comprises a second air nozzle, and the second air nozzle is installed at the second orifice.

[0034] This makes it easier to connect the pipe to the air blowing mechanism.

[0035] Optionally, the extension direction of the center line of the air suction hole and / or the air blowing hole is defined as a first direction, the clamping mechanism further has a second direction and a third direction, the first direction, the second direction and the third direction intersect each other, and the first clamping member and the second clamping member are enclosed on one side of the second direction to form an entrance for the protective film to extend into between the first clamping surface and the second clamping surface;

[0036] The first clamping member is provided with two first cutting grooves, which are arranged side by side in the third direction and penetrate through the first clamping member on both sides in the first direction;

[0037] The second clamping member is provided with two second cutting grooves, each of which is provided corresponding to a first cutting groove and runs through two sides of the second clamping member in the first direction.

[0038] Thereby, it can be ensured that the position where the protective film is cut can be stably clamped to ensure the subsequent cutting effect of the protective film.

[0039] Optionally, the first cutting groove also runs through a side of the first clamping member close to the entrance;

[0040] And / or, the second cutting groove also runs through a side of the second clamping member close to the entrance;

[0041] And / or, the air suction hole is located between the two first cutting grooves;

[0042] And / or, the blowing hole is located between the two second cutting grooves.

[0043] Thereby, the convenience of processing and forming the first cutting groove and the second cutting groove can be improved, and the adsorption effect and the blowing effect of the protective film can be improved.

[0044] Optionally, the clamping mechanism further includes a first driving member, defining an extension direction of a center line of the air suction hole and / or the air blowing hole as a first direction, and the first driving member is used to drive the first clamping member and the second clamping member to move closer to and away from each other in the first direction.

[0045] As a result, the degree of automation of the coating device is improved, which is beneficial to improving the efficiency of coating the battery cells.

[0046] Optionally, the first clamping member comprises a first plate body and a second plate body arranged at an angle, and the first plate body has a first clamping surface;

[0047] The second clamping member comprises a first plate and a second plate arranged at an angle, and the second plate has a second clamping surface;

[0048] The first clamping member is located on the inner side of the second clamping member, the angle formed by the first plate body and the second plate body is in the same direction as the angle formed by the first plate body and the second plate body, and the second plate body and the second plate body are connected to the first driving member.

[0049] Thereby, the convenience and stability of clamping the protective film and connecting with the first driving member can be improved.

[0050] Optionally, the first clamping member further includes a first connecting seat, and the first connecting seat is connected to an end of the second plate body away from the first plate body;

[0051] The second clamping member also includes a second connecting seat, which is connected to a side of the second plate away from the first plate, and the second connecting seat and the first connecting seat are connected to the first driving member.

[0052] This helps to further improve the convenience of connection between the first clamping member, the second clamping member and the first driving member.

[0053] Optionally, the clamping mechanism further has a second direction, the second direction intersects with the first direction, and the first clamping member and the second clamping member are enclosed on one side of the second direction to form an entrance for the protective film to extend into between the first clamping surface and the second clamping surface;

[0054] The clamping mechanism also includes a second driving member, which is used to drive the first driving member, the first clamping member and the second clamping member to slide along the second direction.

[0055] Thereby, the degree of automation of the clamping mechanism can be further improved, thereby facilitating the improvement of the efficiency of the cell wrapping.

[0056] The present application also proposes a cutting device, comprising:

[0057] A clamping mechanism, the clamping mechanism is the above-mentioned clamping mechanism, and the clamping mechanism is used to clamp the protective film wrapped around the outside of the battery; and

[0058] The cutting mechanism includes a third driving member and a cutter. The cutter is connected to the third driving member and can be driven by the third driving member to slide in a direction parallel to the extension direction of the center line of the suction hole and / or the blowing hole to cut the protective film.

[0059] Optionally, the outer side of the cutter is coated with an insulating layer;

[0060] And / or, the cutter has a blade, and the extending direction of the blade is arranged at an angle to the first direction;

[0061] And / or, there are two clamping mechanisms, which are arranged at a relative interval; there are two cutting mechanisms, and each cutting mechanism corresponds to one clamping mechanism.

[0062] In this way, it is possible to avoid the residual adhesive sticking to the cutter, which causes wrinkles in the protective film after coating, so as to further improve the coating effect of the battery. At the same time, the protective effect of the insulating layer can also increase the service life of the cutter. The oblique cutting edge can make the protective film smoother and free of wire drawing when cutting, which is conducive to improving the cutting effect of the protective film. The setting of two clamping mechanisms and two cutting mechanisms can improve the coating efficiency of the battery.

[0063] Optionally, the cutting mechanism further comprises a mounting seat, and the mounting seat is connected to the third driving member;

[0064] The mounting seat is provided with a mounting groove, and one end of the cutter is mounted in the mounting groove.

[0065] Thereby, the convenience, accuracy and stability of the installation of the cutter can be improved.

[0066] Optionally, the extension direction of the center line of the air suction hole and / or the air blowing hole is defined as a first direction, the clamping mechanism further has a second direction and a third direction, the first direction, the second direction and the third direction intersect each other, and the first clamping member and the second clamping member are enclosed on one side of the second direction to form an entrance for the protective film to extend into between the first clamping surface and the second clamping surface;

[0067] The mounting seat is provided with mounting grooves on two opposite sides in the third direction, and a cutter is installed in each mounting groove.

[0068] Thereby, the cutting efficiency of the cutting mechanism on the protective film can be improved.

[0069] The present application also proposes a film wrapping device, comprising the above-mentioned cutting device.

[0070] Optionally, the film-wrapping device further comprises a film-shifting mechanism, which comprises a fourth driving member and a film-shifting sheet connected to the fourth driving member;

[0071] The film-pushing sheet has a contact surface, which is used to contact and drive the protective film. The contact surface is provided with a recessed groove, and one end of the fourth driving member connected to the film-pushing sheet is embedded in the recessed groove.

[0072] Thereby, adhesion between the fourth driving member and the protective film can be avoided.

[0073] The present application also proposes a battery production system, comprising the above-mentioned coating device. BRIEF DESCRIPTION OF THE DRAWINGS

[0074] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying any creative work.

[0075] Figure 1 This is a schematic structural diagram of an embodiment of the film coating device of the present application;

[0076] Figure 2 for Figure 1 A schematic diagram of the structure of the cutting device of the middle film coating equipment;

[0077] Figure 3 for Figure 2 A schematic diagram of the exploded structure of the middle cutting device from one perspective;

[0078] Figure 4 for Figure 2 Another perspective diagram of the exploded structure of the cutting device;

[0079] Figure 5 for Figure 3 A schematic diagram of a partial structure of the cutting device;

[0080] Figure 6 for Figure 5 A schematic diagram of the structure of the clamping mechanism of the middle cutting device;

[0081] Figure 7 for Figure 6 A partial structural diagram of the clamping mechanism;

[0082] Figure 8 for Figure 7 A schematic diagram of the exploded structure of the clamping mechanism from one perspective;

[0083] Fig. 9 for Figure 7 Another perspective diagram of the exploded structure of the clamping mechanism;

[0084] Fig.10 is a cross-sectional schematic diagram of the first clamping member of the clamping mechanism in 9;

[0085] Fig.11 for Figure 8 A cross-sectional schematic diagram of a second clamping member of the middle clamping mechanism;

[0086] Fig.12 for Figure 5 An exploded structural diagram of a cutting mechanism of a cutting device;

[0087] Fig.13 for Figure 1 A schematic diagram of the middle membrane mechanism from one angle;

[0088] Fig.14 for Figure 1 Schematic diagram of the middle membrane mechanism from another perspective.

[0089] Description of Figure Numbers:

[0090]

[0091]

[0092] The realization of the purpose, functional features and advantages of this application will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0093] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0094] It should be noted that all directional indications in the embodiments of the present application (such as up, down, left, right, front, back, etc.) are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0095] In this application, unless otherwise clearly specified and limited, the terms "connection", "fixation", etc. should be understood in a broad sense. For example, "fixation" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0096] In addition, the descriptions of "first", "second", etc. in this application are only for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the meaning of "and / or" appearing in the full text is to include three parallel solutions. Taking "A and / or B as an example", it includes solution A, or solution B, or a solution that satisfies both A and B. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of ordinary technicians in this field to implement. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by this application.

[0097] During the production process of batteries, it is usually necessary to wrap the battery cells with a protective film to achieve insulation protection for the cells. Common coating methods include U-shaped coating and ring-shaped coating. Among them, the U-shaped full-wrapping method has the advantages of high efficiency, low cost, and no leakage of cells, making it highly safe, making this coating method widely used. Specifically, the process of the U-shaped full-wrapping method is: first coat the bottom surface of the cell (the side of the cell with an explosion-proof valve and an electrode column is the top surface, and the side facing away from the top surface is the bottom surface) and two large side surfaces, and then fold the protective film to coat the two small side surfaces of the cell, thereby completing the coating of the bottom surface and side circumference of the cell.

[0098] Among them, in the process of folding the protective film to cover the two small side surfaces of the battery cell, a cutting device is needed to clamp and cut the protective film to form a cutting opening to separate the protective films on the adjacent two sides, so as to facilitate the subsequent folding of the protective film corresponding to the long side of the small side surface, and then folding the protective film corresponding to the short side of the small side surface, thereby achieving full coverage of the small side surface of the battery cell.

[0099] However, since the outer side of the protective film is not sticky but the inner side is sticky, when the clamping mechanism in the cutting device releases the protective film after cutting, the protective film will stick to the clamping piece on the inner side of the corresponding protective film in the clamping mechanism due to uneven force. In this way, when the clamping mechanism is reset, the protective film will be pulled and deflected, resulting in wrinkles in the subsequent film coating, which affects the coating effect of the battery.

[0100] Therefore, based on the above considerations, in order to solve the problem of low coating effect of current batteries, the present application proposes a new clamping mechanism. The clamping mechanism innovatively provides a suction hole on the first clamping surface of the first clamping member facing the outer surface of the protective film, and / or a blowing hole on the second clamping surface of the second clamping member facing the inner surface of the protective film, so as to offset the adhesion of the inner surface of the protective film by negative pressure suction and / or positive pressure blowing, so as to achieve smooth separation of the clamping mechanism from the protective film when opened, avoid the phenomenon that the clamping mechanism pulls the protective film and causes it to deviate and cause wrinkles during subsequent coating, and improve the coating effect of the battery.

[0101] In addition, it should be noted that the clamping mechanism proposed in the present application can be applied to the coating equipment, which can be used to wrap the battery cells with protective film as introduced above, and of course can also be used to wrap other products with packaging film, etc. The present application does not limit the objects to be coated by the coating equipment.

[0102] Next, the structure of the clamping mechanism proposed in this application is explained and illustrated by an embodiment. In one embodiment of this application, please refer to Figures 1 to 9 The clamping mechanism 10 proposed in the present application includes a first clamping member 11 and a second clamping member 13, the first clamping member 11 has a first clamping surface 111; the second clamping member 13 has a second clamping surface 131, the second clamping surface 131 is used to cooperate with the first clamping surface 111 to clamp the protective film 2002, the first clamping surface 111 corresponds to the outer surface 2004 of the protective film 2002, and the second clamping surface 131 corresponds to the inner surface 2003 of the protective film 2002; wherein, the first clamping surface 111 is provided with an air suction hole 112, and / or, the second clamping surface 131 is provided with an air blowing hole 132.

[0103] The first clamping member 11 can correspond to the outer surface 2004 of the protective film 2002 through the first clamping surface 111. Among them, the outer surface 2004 of the protective film 2002, that is, the surface of the protective film 2002 on the side away from the battery cell 2001 when the protective film 2002 is wrapped on the outside of the battery cell 2001 of the battery 2000, is usually not sticky. In addition, the first clamping member 11 can be a plate structure, or a combination of multiple plates, or a column structure and a seat structure, etc. The present application does not limit the structural type and shape of the first clamping member 11. The suction hole 112 on the first clamping surface 111 can be used to communicate with an exhaust mechanism such as an exhaust pump. In this way, when the cutting of the protective film 2002 is completed and the clamping mechanism 10 and the protective film 2002 need to be opened to separate, the gas between the first clamping surface 111 and the protective film 2002 can be evacuated through the suction hole 112 by the exhaust mechanism to form a negative pressure. At this time, the outer surface 2004 of the protective film 2002 can be adsorbed and can offset the adhesion between the inner surface 2003 of the protective film 2002 and the second clamping member 13, so that the inner and outer sides of the protective film 2002 are uniformly stressed, so that the clamping mechanism 10 can be smoothly separated from the protective film 2002 when it is opened. Among them, the number of suction holes 112 can be one, or of course multiple. The shape of the suction hole 112 can be circular, or of course square or rectangular. It can be seen that the present application does not limit the number and shape of the suction holes 112. In addition, in one embodiment, the exhaust mechanism can also be connected to a first pressure gauge to display the air pressure value between the first clamping surface 111 and the protective film 2002 through the first pressure gauge, so as to facilitate the intuitive understanding of the user, so as to adaptively adjust the exhaust pressure of the exhaust mechanism according to the viscosity change of the protective film 2002, and then adjust the adaptability of the adsorption force on the outside of the protective film 2002 and the adhesion force on the inside.

[0104] The second clamping member 13 can correspond to the inner surface 2003 of the protective film 2002 through the second clamping surface 131. The inner surface 2003 of the protective film 2002, that is, the surface of the protective film 2002 facing the battery cell 2001 when the protective film 2002 is wrapped on the outer side of the battery cell 2001 of the battery 2000, is usually sticky so that the protective film 2002 can be adhered to the outer side of the battery cell 2001. In addition, the second clamping member 13 can be a plate structure, or a combination structure of multiple plates, or a column structure and a seat structure, etc. The present application does not limit the structural type and shape of the second clamping member 13. The blowing hole 132 on the second clamping surface 131 can be used to connect with a blowing mechanism such as an air pump. In this way, when the cutting of the protective film 2002 is completed and the clamping mechanism 10 and the protective film 2002 need to be opened to separate, the blowing mechanism can be used to blow air between the second clamping surface 131 and the protective film 2002 through the blowing hole 132 to form a positive pressure. At this time, the inner surface 2003 of the protective film 2002 can be blown away to offset the adhesion between the inner surface 2003 of the protective film 2002 and the second clamping member 13, so that the inner and outer sides of the protective film 2002 are evenly stressed, and the clamping mechanism 10 can be smoothly separated from the protective film 2002 when it is opened. Among them, the number of blowing holes 132 can be one, and of course it can also be multiple. The shape of the blowing hole 132 can be circular, and of course it can also be square or rectangular. It can be seen that the present application does not limit the number and shape of the blowing holes 132. In addition, in one embodiment, the blowing mechanism may be connected to a second pressure gauge to display the air pressure value between the second clamping surface 131 and the protective film 2002 through the second pressure gauge, so as to facilitate the user to intuitively understand and adaptively adjust the blowing pressure of the blowing mechanism according to the viscosity change of the protective film 2002, so as to adjust the adaptability of the airflow blowing force on the inner side of the protective film 2002 and the adhesive force on the inner side. In addition, it should be noted that the clamping mechanism 10 proposed in the present application may be provided with the air suction holes 112 only on the first clamping surface 111; of course, it may also be provided with the air blowing holes 132 only on the second clamping surface 131; or, while the air suction holes 112 are provided on the first clamping surface 111, the air blowing holes 132 are also provided on the second clamping surface 131. When the air suction holes 112 are provided on the first clamping surface 111 and the air blowing holes 132 are provided on the second clamping surface 131, the air suction holes 112 on the first clamping surface 111 and the air blowing holes 132 on the second clamping surface 131 can be arranged correspondingly, or of course, they can be arranged in a staggered manner, and the present application does not limit this.

[0105] When the clamping mechanism 10 in the technical solution of the present application is in use, the first clamping member 11 and the second clamping member 13 cooperate to clamp the protective film 2002, so as to subsequently stably cut the protective film 2002. When the cutting is completed and the clamping mechanism 10 needs to be opened, since the first clamping surface 111 of the first clamping member 11 is provided with an air suction hole 112, and / or the second clamping surface 131 of the second clamping member 13 is provided with an air blowing hole 132, negative pressure suction can be formed between the first clamping surface 111 and the protective film 2002, and / or positive pressure blowing can be formed between the second clamping surface 131 and the protective film 2002. In this way, negative pressure suction and / or positive pressure blowing can offset the adhesion of the inner surface 2003 of the protective film 2002, so that the clamping mechanism 10 can be smoothly separated from the protective film 2002 when opened, avoiding the clamping mechanism 10 pulling the protective film 2002 and causing it to deviate, resulting in wrinkles during subsequent wrapping, thereby improving the wrapping effect of the battery 2000.

[0106] Please refer to Fig. 9 In one embodiment of the present application, the number of the air intake holes 112 is multiple.

[0107] Multiple, that is to say, the number of the air intake holes 112 can be two, or three or more. Among them, the multiple air intake holes 112 can be formed in multiple rows, and the air intake holes 112 in each two adjacent rows can be correspondingly arranged to form a rectangular array distribution. Of course, the air intake holes 112 in each two adjacent rows can also be staggered. In addition, the multiple air intake holes 112 can also be distributed in a circular array, or in a disordered distribution. The present application does not limit the specific number and distribution form of the air intake holes 112. In addition, the multiple air intake holes 112 can be connected to one air suction mechanism, or of course, they can be connected to at least two air suction mechanisms.

[0108] In this embodiment, the number of the suction holes 112 is set to be multiple, so that air can be sucked out simultaneously through the multiple suction holes 112, which is beneficial to improve the air extraction efficiency between the first clamping surface 111 and the protective film 2002, thereby improving the separation efficiency of the clamping mechanism 10 and the protective film 2002 and improving the packaging efficiency of the battery 2000.

[0109] Please refer to Fig. 9 In one embodiment of the present application, the plurality of air intake holes 112 include a plurality of rows of air intake holes 112 , and each row of air intake holes 112 includes a plurality of air intake holes 112 .

[0110] In this embodiment, the plurality of air intake holes 112 are arranged to include a plurality of rows of air intake holes 112, so that the air intake holes 112 can be distributed more regularly, so as to make full use of the limited area on the first clamping surface 111, and distribute as many air intake holes 112 as possible, thereby further improving the air extraction efficiency between the first clamping surface 111 and the protective film 2002. In addition, such an arrangement is also conducive to improving the convenience of processing and forming the plurality of air intake holes 112.

[0111] Please refer to Fig. 9 and Fig.10 In one embodiment of the present application, a plurality of first air exhaust channels 113 are provided in the first clamping member 11, each first air exhaust channel 113 is provided corresponding to a row of air intake holes 112, and the plurality of air intake holes 112 in each row are all connected to the corresponding first air exhaust channel 113; a second air exhaust channel 115 is also provided in the first clamping member 11, and the same end of the plurality of first air exhaust channels 113 is all connected to the second air exhaust channel 115.

[0112] The first air extraction channel 113 can be used to communicate with the plurality of air suction holes 112 in a corresponding row. The second air extraction channel 115 can be used to communicate with the first air extraction channel 113 and the air extraction mechanism described above. Therefore, in other words, the first air extraction channel 113 is a shunt air extraction channel, and the second air extraction channel 115 is a main air extraction channel.

[0113] In this embodiment, the arrangement of multiple first air extraction channels 113 and one first air extraction channel 113 enables multiple air suction holes 112 in each row to be exhausted through the corresponding first air extraction channels 113, and multiple first air extraction channels 113 can be exhausted through one second air extraction channel 115. In this way, only one second air extraction channel 115 and one air extraction mechanism need to be connected, which can greatly simplify the pipeline connection structure between the first clamping member 11 and the air extraction mechanism, thereby facilitating the manufacturing convenience of the film coating device 1000.

[0114] Please refer to Fig. 9 and Fig.10 In one embodiment of the present application, one end of the first air extraction channel 113 away from the second air extraction channel 115 has a first opening 114 that penetrates the first clamping member 11 , and the clamping mechanism 10 further includes a first sealing member that seals the first opening 114 .

[0115] The first opening 114 penetrates the first clamping member 11, that is, the first opening 114 is arranged outside the first clamping member 11. The first sealing member seals the first opening 114, that is, the first opening 114 can be covered and sealed by the first sealing member. The first sealing member can extend into the first opening 114 for sealing, and of course, it can also be completely located outside the first clamping member 11.

[0116] In this embodiment, the first air extraction channel 113 is provided with a first opening 114, so that during processing, drilling can be performed directly from one side of an integrated first clamping member 11 having the first opening 114, so as to improve the convenience of forming the first air extraction channel 113 and ensure the sealing of the first air extraction channel 113. The provision of the first sealing member can further ensure the sealing at the first opening 114. Of course, it should be noted that in other embodiments, when the first opening 114 is not provided, the first air extraction channel 113 can also be formed by enclosing a part of the first clamping member 11 and another part of the second clamping member 13.

[0117] Please refer to Fig. 9 and Fig.10 In one embodiment of the present application, one end of the second air extraction channel 115 is connected to a first air extraction channel 113 , and the other end has a second opening 116 that penetrates the first clamping member 11 .

[0118] The second opening 116 penetrates through the first clamping member 11 , that is, is also disposed on the outer side of the first clamping member 11 .

[0119] In this embodiment, the second air extraction channel 115 is provided with a second opening 116, so that during processing, drilling can be performed directly from a side of the first clamping member 11 having the second opening 116, so as to improve the convenience of forming the second air extraction channel 115 and ensure the sealing of the second air extraction channel 115. Of course, it should be noted that in other embodiments, when the second opening 116 is not provided, the second air extraction channel 115 can also be formed by enclosing a part of the first clamping member 11 and another part of the second clamping member 13.

[0120] In one embodiment of the present application, the clamping mechanism 10 further includes a first air nozzle installed at the second opening 116 .

[0121] In this embodiment, the provision of the first gas nozzle can be used to provide a connection position, thereby facilitating connection with a pipeline connected to the air extraction mechanism.

[0122] Please refer to Figure 8 In one embodiment of the present application, the number of the blowing holes 132 is multiple.

[0123] That is to say, the number of the blowing holes 132 can be two, or three or more. Among them, the multiple blowing holes 132 can be formed in multiple rows, and the blowing holes 132 in each two adjacent rows can be correspondingly arranged to form a rectangular array distribution. Of course, the blowing holes 132 in each two adjacent rows can also be staggered. In addition, the multiple blowing holes 132 can also be distributed in a circular array, or in a disordered distribution. The present application does not limit the specific number and distribution form of the blowing holes 132. In addition, the multiple blowing holes 132 can be connected to one blowing mechanism, or of course, they can be connected to at least two blowing mechanisms.

[0124] In this embodiment, the number of blowing holes 132 is set to be multiple, so that air can be blown through multiple blowing holes 132 at the same time, which is beneficial to improve the blowing efficiency between the second clamping surface 131 and the protective film 2002, thereby improving the separation efficiency of the clamping mechanism 10 and the protective film 2002 and improving the packaging efficiency of the battery 2000.

[0125] Please refer to Figure 8 In one embodiment of the present application, the plurality of blowing holes 132 include a plurality of rows of blowing holes 132 , and each row of blowing holes 132 includes a plurality of blowing holes 132 .

[0126] In this embodiment, the plurality of blowing holes 132 are arranged to include a plurality of rows of blowing holes 132, so that the distribution of the blowing holes 132 is relatively regular, so as to make full use of the limited area on the second clamping surface 131, and distribute as many blowing holes 132 as possible, thereby further improving the blowing efficiency between the second clamping surface 131 and the protective film 2002. In addition, such an arrangement is also conducive to improving the convenience of processing and forming the plurality of blowing holes 132.

[0127] Please refer to Figure 8 and Fig.11 In one embodiment of the present application, a plurality of first blowing channels 133 are provided in the second clamping member 13, each first blowing channel 133 is arranged corresponding to a row of blowing holes 132, and the plurality of blowing holes 132 in each row are all connected to the corresponding first blowing channel 133; a second blowing channel 135 is also provided in the second clamping member 13, and the same end of the plurality of first blowing channels 133 is all connected to the second blowing channel 135.

[0128] The first blowing channel 133 can be used to communicate with the corresponding row of multiple blowing holes 132. The second blowing channel 135 can be used to communicate with the first blowing channel 133 and the blowing mechanism described above. Therefore, in other words, the first blowing channel 133 is a branch blowing channel, and the second blowing channel 135 is a main blowing channel.

[0129] In this embodiment, the arrangement of the plurality of first blowing channels 133 and one first blowing channel 133 enables the plurality of blowing holes 132 in each row to be blown through the corresponding first blowing channels 133, and the plurality of first blowing channels 133 can be blown through one second blowing channel 135. In this way, only the one second blowing channel 135 and one blowing mechanism need to be connected, which can greatly simplify the pipeline connection structure between the second clamping member 13 and the blowing mechanism, thereby facilitating the manufacturing convenience of the film coating device 1000.

[0130] Please refer to Figure 8 and Fig.11 In one embodiment of the present application, one end of the first blowing channel 133 away from the second blowing channel 135 has a first opening 134 that penetrates the second clamping member 13 , and the clamping mechanism 10 further includes a second sealing member that seals the first opening 134 .

[0131] The first opening 134 penetrates the second clamping member 13, that is, the first opening 134 is arranged outside the second clamping member 13. The second sealing member seals the first opening 134, that is, the first opening 134 can be covered and sealed by the second sealing member. The second sealing member can extend into the first opening 134 for sealing, and of course, it can also be completely located outside the second clamping member 13.

[0132] In this embodiment, the first blowing channel 133 is provided with a first orifice 134, so that during processing, drilling can be performed directly from one side of an integrated second clamping member 13 having the first orifice 134, so as to improve the convenience of forming the first blowing channel 133 and ensure the sealing of the first blowing channel 133. The provision of the second sealing member can further ensure the sealing at the first orifice 134. Of course, it should be noted that in other embodiments, when the first orifice 134 is not provided, the first blowing channel 133 can also be formed by enclosing a part of the second clamping member 13 and another part of the second clamping member 13.

[0133] Please refer to Figure 8 and Fig.11 In one embodiment of the present application, one end of the second blowing channel 135 is connected to a first blowing channel 133 , and the other end has a second opening 136 that penetrates the second clamping member 13 .

[0134] The second hole 136 penetrates through the second clamping member 13 , that is, is also provided on the outside of the second clamping member 13 .

[0135] In this embodiment, the second air extraction channel 115 is provided with a second orifice 136, so that during processing, drilling can be performed directly from one side of an integrated second clamping member 13 having the second orifice 136, so as to improve the convenience of forming the second air extraction channel 115 and ensure the sealing of the second air extraction channel 115. Of course, it should be noted that in other embodiments, when the second orifice 136 is not provided, the second air extraction channel 115 can also be formed by enclosing a part of the second clamping member 13 and another part of the second clamping member 13.

[0136] In one embodiment of the present application, the clamping mechanism 10 further includes a second air nozzle installed at the second orifice 136 .

[0137] In this embodiment, the second air nozzle can be provided to provide a connection position, thereby facilitating connection with a pipeline connected to the blowing mechanism.

[0138] Please refer to Figures 5 to 8 In one embodiment of the present application, the extension direction of the center line of the suction hole 112 and / or the blowing hole 132 is defined as the first direction, and the clamping mechanism 10 also has a second direction and a third direction. The first direction, the second direction and the third direction intersect each other, and the first clamping member 11 and the second clamping member 13 are enclosed on one side of the second direction to form an entrance 15 for the protective film 2002 to extend into between the first clamping surface 111 and the second clamping surface 131; the first clamping member 11 is provided with two first cutting grooves 117, and the two first cutting grooves 117 are arranged side by side in the third direction and pass through the first clamp on both sides in the first direction; the second clamping member 13 is provided with two second cutting grooves 137, and each second cutting groove 137 is arranged corresponding to a first cutting groove 117 and passes through the second clamping member 13 on both sides in the first direction.

[0139] The entry opening 15 is the opening between the first clamping member 11 and the second clamping member 13 through which the protective film 2002 wrapped around the battery cell 2001 enters. As described below, the second driving member 19 drives the first clamping member 11 and the second clamping member 13 to approach the battery cell 2001, so that the protective film 2002 extends from the entry opening 15 to between the first clamping member 11 and the second clamping member 13. Of course, other driving members may also drive the battery cell 2001 to approach the first clamping member 11 and the second clamping member 13, so that the protective film 2002 extends from the entry opening 15 to between the first clamping member 11 and the second clamping member 13. The first cutting groove 117 and the second cutting groove 137 may be used for the passage of the cutting knife 33 in the cutting mechanism 30, so as to achieve the cutting of the protective film 2002 by the cutting knife 33.

[0140] In this embodiment, the first cutting groove 117 and the second cutting groove 137 enable the cutting position of the cutting knife 33 in the cutting mechanism 30 on the protective film 2002 to be covered by the first clamping member 11 and the second clamping member 13 respectively, so as to ensure that the cutting position of the protective film 2002 can be stably clamped to ensure the subsequent cutting effect of the protective film 2002.

[0141] Please refer to Figure 7 and Figure 8 In one embodiment of the present application, the first cutting groove 117 also penetrates a side of the first clamping member 11 close to the entrance 15 .

[0142] In this embodiment, the first cutting groove 117 is passed through the side of the first clamping member 11 close to the entrance 15, so that the structure of the first cutting groove 117 can be simpler, thereby facilitating the processing and forming thereof.

[0143] Please refer to Figure 7 and Figure 8 In one embodiment of the present application, the second cutting groove 137 also penetrates a side of the second clamping member 13 close to the entrance 15 .

[0144] In this embodiment, the second cutting groove 137 is passed through the side of the second clamping member 13 close to the entrance 15, so that the structure of the second cutting groove 137 is also simpler, which is conducive to improving the convenience of processing and forming it.

[0145] Please refer to Fig. 9 In one embodiment of the present application, the air suction hole 112 is located between the two first cutting grooves 117 .

[0146] In this embodiment, the air intake hole 112 is arranged between the two first cutting grooves 117, so that after the cutting mechanism 30 cuts the protective film 2002 of the short side of the small side of the corresponding battery cell 2001, the air intake hole 112 can absorb air from the main part of the protective film 2002 of the short side of the small side of the corresponding battery cell 2001, which is beneficial to improve the adsorption effect of the protective film 2002.

[0147] Please refer to Figure 8 In one embodiment of the present application, the blowing hole 132 is located between the two second cutting grooves 137 .

[0148] In this embodiment, the blowing hole 132 is arranged between the two second cutting grooves 137, so that after the cutting mechanism 30 cuts the protective film 2002 of the short side of the small side of the corresponding battery cell 2001, the blowing hole 132 can blow air on the main part of the protective film 2002 of the short side of the small side of the corresponding battery cell 2001, which is beneficial to improve the blowing effect of the protective film 2002.

[0149] Please refer to Figure 5 In one embodiment of the present application, the clamping mechanism 10 also includes a first driving member 17, which defines the extension direction of the center line of the suction hole 112 and / or the blowing hole 132 as a first direction, and the first driving member 17 is used to drive the first clamping member 11 and the second clamping member 13 to move closer to and away from each other in the first direction.

[0150] The first driving member 17 can be used to provide a driving force to drive the first clamping member 11 and the second clamping member 13 to move closer to and away from each other. The first driving member 17 can be a pneumatic finger to reduce the number and structure of the first driving member 17 and improve the convenience of its installation and setting. Of course, the first driving member 17 can also be two telescopic cylinders. At this time, one of the two first driving members 17 is used to drive the first clamping member 11, and the other is used to drive the second clamping member 13. Therefore, the present application does not limit the type of the first driving member 17, and it only needs to be able to drive the first clamping member 11 and the second clamping member 13 to move closer to and away from each other.

[0151] In this embodiment, the first driving member 17 is provided to automatically drive the first clamping member 11 and the second clamping member 13 to move closer to and away from each other, thereby improving the automation of the coating device and further facilitating the coating efficiency of the battery cell 2001 .

[0152] Please refer to Figures 5 to 8 In one embodiment of the present application, the first clamping member 11 includes a first plate 118 and a second plate 119 arranged at an angle, and the first plate 118 has a first clamping surface 111; the second clamping member 13 includes a first plate 138 and a second plate 139 arranged at an angle, and the second plate 139 has a second clamping surface 131; the first clamping member 11 is located on the inner side of the second clamping member 13, and the angle formed by the first plate 118 and the second plate 119 is in the same direction as the angle formed by the first plate 138 and the second plate 139, and the second plate 119 and the second plate 139 are connected to the first driving member 17.

[0153] In this embodiment, the first clamping member 11 is configured to include a first plate body 118 and a second plate body 119, and the second clamping member 13 is configured to include a first plate 138 and a second plate 139, so that the first clamping member 11 and the second clamping member 13 can clamp the protective film 2002 through the first plate body 118 and the first plate 138, and are connected to the first driving member 17 through the second plate body 119 and the second plate 139. In this way, the first clamping member 11 and the second clamping member 13 can complete the clamping of the protective film 2002 and the connection with the first driving member 17 through different parts, which can improve the convenience and stability of the clamping of the protective film 2002 and the connection with the first driving member 17.

[0154] Please refer to Figures 5 to 8 In one embodiment of the present application, the first clamping member 11 also includes a first connecting seat 120, which is connected to one end of the second plate body 119 away from the first plate body 118; the second clamping member 13 also includes a second connecting seat 140, which is connected to a side of the second plate body 139 away from the first plate body 138, and the second connecting seat 140 and the first connecting seat 120 are connected to the first driving member 17.

[0155] In this embodiment, the first connection seat 120 and the second connection seat 140 can provide a better connection position to connect with the first driving member 17, which is conducive to further improving the convenience of connection between the first clamping member 11 and the second clamping member 13 and the first driving member 17. Among them, the first connection seat 120 and the second connection seat 140 and the first driving member 17 can be connected by screws to simplify the connection structure between the two and improve the stability of the connection. Of course, the connection between the first connection seat 120 and the second connection seat 140 and the first driving member 17 can also be connected by snap connection or adhesive connection, etc., which is not limited in this application.

[0156] Please refer to Figures 5 to 7 In one embodiment of the present application, the clamping mechanism 10 also has a second direction, which intersects with the first direction, and the first clamping member 11 and the second clamping member 13 are enclosed on one side of the second direction to form an entrance 15 for the protective film 2002 to extend into the first clamping surface 111 and the second clamping surface 131; the clamping mechanism 10 also includes a second driving member 19, and the second driving member 19 is used to drive the first driving member 17, the first clamping member 11 and the second clamping member 13 to slide along the second direction.

[0157] The second driving member 19 can be used to provide driving force to drive the first driving member 17, the first clamping member 11 and the second clamping member 13 to approach the battery cell 2001, thereby achieving the protective film 2002 coated on the battery cell 2001 to enter between the first clamping surface 111 and the second clamping surface 131 through the entry port 15. The second driving member 19 can be a telescopic cylinder, or a linear motor, etc., and the present application does not limit the type of the second driving member 19.

[0158] In this embodiment, the second driving member 19 is arranged so that when the battery cell 2001 reaches the preset position, the second driving member 19 can drive the first driving member 17, the first clamping member 11 and the second clamping member 13 to automatically approach the battery cell 2001. This further improves the automation of the clamping mechanism 10, thereby facilitating the efficiency of coating the battery cell 2001.

[0159] Please refer to Figures 5 to 11In one embodiment of the present application, the clamping mechanism 10 includes a first clamping member 11 and a second clamping member 13. The first clamping member 11 has a first clamping surface 111; the second clamping member 13 has a second clamping surface 131, and the second clamping surface 131 is used to cooperate with the first clamping surface 111 to clamp the protective film 2002. The first clamping surface 111 corresponds to the outer surface 2004, and the second clamping surface 131 corresponds to the inner surface 2003; wherein, the first clamping surface 111 is provided with an air suction hole 112, and the second clamping surface 131 is provided with an air blowing hole 132. The number of the air suction holes 112 is multiple; the multiple air suction holes 112 include multiple rows of air suction holes 112, and each row of air suction holes 112 includes multiple air suction holes 112. A plurality of first air extraction channels 113 are provided in the first clamping member 11, and each first air extraction channel 113 is provided corresponding to a row of air suction holes 112, and the plurality of air suction holes 112 in each row are all connected to the corresponding first air extraction channel 113; a second air extraction channel 115 is also provided in the first clamping member 11, and the same end of the plurality of first air extraction channels 113 is all connected to the second air extraction channel 115. One end of the first air extraction channel 113 away from the second air extraction channel 115 has a first opening 114 that passes through the first clamping member 11, and the clamping mechanism 10 further includes a first sealing member, which seals the first opening 114. One end of the second air extraction channel 115 is connected to one of the first air extraction channels 113, and the other end has a second opening 116 that passes through the first clamping member 11. The clamping mechanism 10 further includes a first air nozzle, which is installed at the second opening 116. There are multiple air blowing holes 132, and the multiple air blowing holes 132 include multiple rows of air blowing holes 132, and each row of air blowing holes 132 includes multiple air blowing holes 132. Multiple first air blowing channels 133 are provided in the second clamping member 13, and each first air blowing channel 133 is arranged corresponding to a row of air blowing holes 132, and the multiple air blowing holes 132 in each row are all connected to the corresponding first air blowing channel 133; a second air blowing channel 135 is also provided in the second clamping member 13, and the same end of the multiple first air blowing channels 133 is connected to the second air blowing channel 135. One end of the first air blowing channel 133 away from the second air blowing channel 135 has a first orifice 134 that penetrates the second clamping member 13, and the clamping mechanism 10 also includes a second sealing member, and the second sealing member seals the first orifice 134. One end of the second air blowing channel 135 is connected to a first air blowing channel 133, and the other end has a second orifice 136 that penetrates the second clamping member 13. The clamping mechanism 10 further includes a second air nozzle installed at the second opening 136 .The extension direction of the center lines of the air suction hole 112 and the air blowing hole 132 is defined as the first direction, and the clamping mechanism 10 also has a second direction and a third direction. The first direction, the second direction and the third direction intersect each other, and the first clamping member 11 and the second clamping member 13 are enclosed on one side of the second direction to form an entrance 15 for the protective film 2002 to extend into between the first clamping surface 111 and the second clamping surface 131; the first clamping member 11 is provided with two first cutting grooves 117, and the two first cutting grooves 117 are arranged side by side in the third direction and pass through the first clamp on both sides in the first direction; the second clamping member 13 is provided with two second cutting grooves 137, and each second cutting groove 137 is arranged corresponding to a first cutting groove 117 and passes through both sides of the second clamping member 13 in the first direction. The first cutting groove 117 also penetrates a side of the first clamping member 11 close to the entrance 15; the second cutting groove 137 also penetrates a side of the second clamping member 13 close to the entrance 15; the air suction hole 112 is located between the two first cutting grooves 117; and the air blowing hole 132 is located between the two second cutting grooves 137. The clamping mechanism 10 further includes a first driving member 17, which is used to drive the first clamping member 11 and the second clamping member 13 to move closer to and away from each other in the first direction. The first clamping member 11 includes a first plate 118 and a second plate 119 arranged at an angle, and the first plate 118 has a first clamping surface 111; the second clamping member 13 includes a first plate 138 and a second plate 139 arranged at an angle, and the second plate 139 has a second clamping surface 131; the first clamping member 11 is located on the inner side of the second clamping member 13, and the angle formed by the first plate 118 and the second plate 119 is in the same direction as the angle formed by the first plate 138 and the second plate 139, and the second plate 119 and the second plate 139 are connected to the first driving member 17. The first clamping member 11 also includes a first connecting seat 120, and the first connecting seat 120 is connected to an end of the second plate 119 away from the first plate 118; the second clamping member 13 also includes a second connecting seat 140, and the second connecting seat 140 is connected to a side of the second plate 139 away from the first plate 138, and the second connecting seat 140 and the first connecting seat 120 are connected to the first driving member 17. The clamping mechanism 10 further includes a second driving member 19 , which is used to drive the first driving member 17 , the first clamping member 11 and the second clamping member 13 to slide along the second direction.

[0160] Please refer to Figures 3 to 5The present application also proposes a cutting device 100, which includes a clamping mechanism 10 and a cutting mechanism 30. The specific structure of the clamping mechanism 10 refers to the above embodiment. Since the present cutting device 100 adopts all the technical solutions of all the above embodiments, it at least has all the beneficial effects brought by the technical solutions of the above embodiments, which will not be repeated here. Among them, the clamping mechanism 10 is used to clamp the protective film 2002 wrapped around the outside of the battery 2000; the cutting mechanism 30 includes a third driving member 31 and a cutter 33, the cutter 33 is connected to the third driving member 31, and can be driven by the third driving member 31 to slide in a direction parallel to the extension direction of the center line of the suction hole 112 and / or the blowing hole 132 to cut the protective film 2002 to form the required cutting opening 2005. The third driving member 31 can be used to provide a driving force to drive the cutter 33 to cut the protective film 2002 clamped between the first clamp 11 and the second clamp 13. The third driving member 31 may be a telescopic cylinder, or a linear motor. The present application does not limit the type of the third driving member 31 .

[0161] In one embodiment of the present application, the outer side of the cutter 33 is coated with an insulating layer.

[0162] In this embodiment, an insulating layer is coated on the outside of the cutter 33, which can prevent the cutter 33 from adhering to residual glue and causing wrinkles in the protective film 2002 after coating, so as to further improve the coating effect of the battery 2000. At the same time, the protective effect of the insulating layer can also increase the service life of the cutter 33. The insulating layer can be Teflon, or other plastic materials.

[0163] Please refer to Figure 5 In one embodiment of the present application, the cutter 33 has a blade 331, and the extending direction of the blade 331 is set at an angle to the first direction.

[0164] In this embodiment, the extension direction of the blade 331 is set to be set at an angle with the first direction, so that when cutting the protective film 2002, the cutter 33 can first cut through one end of the blade 331, and then gradually complete the cutting of the protective film 2002 during the driving process of the third driving member 31. In this way, the protective film 2002 can be made smoother and free of wire drawing when cutting, which is conducive to improving the cutting effect of the protective film 2002.

[0165] Please refer to Figure 5 and Fig.12 In one embodiment of the present application, the cutting mechanism 30 further includes a mounting seat 35 , which is connected to the third driving member 31 ; the mounting seat 35 is provided with a mounting groove 351 , and one end of the cutter 33 is mounted in the mounting groove 351 .

[0166] In this embodiment, the mounting seat 35 can provide a mounting position to facilitate the installation of the cutter 33. At the same time, the mounting seat 35 can also provide a connection position so as to be connected to the third driving member 31. Therefore, the setting of the mounting seat 35 improves the convenience of installing the cutter 33 on the third driving member 31. Further, the mounting seat 35 is provided with a mounting groove 351, so that the mounting groove 351 can play a positioning and limiting role on the cutter 33, thereby facilitating the accuracy and stability of the installation of the cutter 33 on the mounting seat 35. Among them, the mounting groove 351 can only include a groove bottom wall and a groove side wall to simplify the structure of the mounting groove 351 and improve the convenience of its processing and forming. Of course, the mounting groove 351 can also include a groove bottom wall and three connected groove bottom walls. In addition, the connection between the cutter 33 and the mounting seat 35 can be connected by screws to simplify the connection structure of the cutter 33 while ensuring the stability of the connection between the two. Of course, the cutter 33 and the mounting seat 35 may also be connected by snap-fit ​​connection or adhesive connection, etc. The present application does not limit the connection between the cutter 33 and the mounting seat 35.

[0167] Please refer to Figure 5 and Fig.12 In one embodiment of the present application, the extension direction of the center line of the suction hole 112 and / or the blowing hole 132 is defined as the first direction, and the clamping mechanism 10 also has a second direction and a third direction. The first direction, the second direction and the third direction intersect each other, and the first clamping member 11 and the second clamping member 13 are enclosed on one side of the second direction to form an entrance 15 for the protective film 2002 to extend into the first clamping surface 111 and the second clamping surface 131; the mounting seat 35 is provided with mounting grooves 351 on opposite sides in the third direction, and a cutter 33 is installed in each mounting groove 351.

[0168] In this embodiment, two cutters 33 are installed on the mounting seat 35 so that the cutting mechanism 30 can cut two incisions in the protective film 2002 at one time, thereby improving the cutting efficiency of the protective film 2002 and improving the coating efficiency of the battery 2000.

[0169] Please refer to Figures 2 to 4 In one embodiment of the present application, there are two clamping mechanisms 10 , and the two clamping mechanisms 10 are arranged at a relative interval; there are two cutting mechanisms 30 , and each cutting mechanism 30 is arranged corresponding to one clamping mechanism 10 .

[0170] In this embodiment, the number of the clamping mechanism 10 and the cutting mechanism 30 are set to two, so that they can better correspond to the protective film 2002 used to cover the two small sides of the battery cell 2001, so as to achieve one-time cutting of the protective film 2002 on both sides of the battery cell 2001, further improve the cutting efficiency of the protective film 2002 and further improve the coating efficiency of the battery 2000.

[0171] Please refer to Figure 1 The present application also proposes a coating device 1000, which includes a cutting device 100. The specific structure of the cutting device 100 is referred to the above embodiment. Since the coating device 1000 adopts all the technical solutions of all the above embodiments, it at least has all the beneficial effects brought by the technical solutions of the above embodiments, which will not be described one by one here. Among them, the coating device 1000 can also include a conveying mechanism for conveying the battery cell 2001, and a roller mechanism for rolling the protective film 2002 to drive the protective film 2002 to fold and cover the battery cell 2001.

[0172] Please refer to Figure 1 , Fig.13 as well as Fig.14 In one embodiment of the present application, the coating device 1000 also includes a film-pushing mechanism 300, which includes a fourth driving member and a film-pushing sheet 301 connected to the fourth driving member; the film-pushing sheet 301 has a contact surface 303, which is used to contact and drive the protective film 2002, and the contact surface 303 is provided with a recessed groove 305, and one end of the fourth driving member connected to the film-pushing sheet 301 is embedded in the recessed groove 305.

[0173] In this embodiment, the film-pushing mechanism 300 is arranged so that after the cutting device 100 completes the cutting of the protective film 2002, the fourth driving member in the film-pushing mechanism 300 can drive the film-pushing sheet 301 to drive the protective film 2002 of the short side of the small side of the corresponding battery cell 2001 to move outward, so that the roller mechanism can smoothly and firstly move the protective film 2002 of the short side of the small side of the corresponding battery cell 2001 inward and fold it onto the battery cell 2001. Furthermore, a concave groove 305 is provided on the abutting surface 303, and one end of the fourth driving member connected to the film-pushing sheet 301 is embedded in the concave groove 305. In this way, the adhesion between the fourth driving member and the protective film 2002 can be avoided. Among them, the fourth driving member can be a telescopic cylinder, and of course it can also be a linear motor or a rotary motor, etc., and the present application does not limit the number of the fourth driving members. In addition, there can be two film-pushing mechanisms 300 so as to push away two protective films 2002 corresponding to the short sides of the small side surfaces of the battery cell 2001 at one time, thereby further improving the coating efficiency of the battery 2000 .

[0174] In one embodiment of the present application, the working process of the coating device 1000 can be: after the bottom surface and two large side surfaces of the battery cell 2001 are coated, the battery cell 2001 is driven to move to a preset position; then the first driving member 17, the first clamping member 11 and the second clamping member 13 can be driven by the second driving member 19 to approach the battery cell 2001, so that the protective film 2002 on the battery cell 2001 can extend between the first clamping member 11 and the second clamping member 13; then the first driving member 17 can drive the first clamping member 11 and the second clamping member 13 to approach each other to clamp the protective film 2002; then the third driving member 31 can drive the cutter 33 to approach the protective film 2002 to form a cutting opening 2005 on the protective film 2002 to complete the cutting of the protective film 2002; then the third driving member 31 can drive the cutter 33 away from the protective film 200 2, for resetting; then the first driving member 17 can drive the first clamping member 11 and the second clamping member 13 to move away from each other, and at the same time, suction is performed through the suction hole 112 and / or blowing is performed through the blowing hole 132 to offset the adhesive force between the protective film 2002 and the first clamping member 11, so that the first clamping member 11 and the second clamping member 13 are smoothly separated from the protective film 2002; then the battery cell 2001 is driven to move to the next station, and the fourth driving member in the film-pushing mechanism 300 can drive the film-pushing sheet 301 to move, so as to drive the short side protective film 2002 of the small side surface of the corresponding battery cell 2001 to be pushed outward, so as to facilitate the film-wrapping device 1000 to relatively smoothly first make the long side protective film 2002 of the small side surface of the corresponding battery cell 2001 fold inwardly; then the short side protective film 2002 of the small side surface of the corresponding battery cell 2001 is driven to fold inwardly.

[0175] The present application also proposes a battery production system, which includes a coating device 1000. The specific structure of the coating device 1000 refers to the above embodiment. Since the present battery production system adopts all the technical solutions of all the above embodiments, it at least has all the beneficial effects brought by the technical solutions of the above embodiments, which will not be described one by one here. Among them, the battery production system can also include stirring equipment and coating equipment.

[0176] The above description is only a preferred embodiment of the present application, and does not limit the patent scope of the present application. All equivalent structural changes made by using the contents of the present application specification and drawings under the inventive concept of the present application, or directly / indirectly applied in other related technical fields are included in the patent protection scope of the present application.

Claims

1. A clamping mechanism for clamping a protective film wrapped around the outside of a battery cell, wherein the protective film has an inner surface facing the battery cell and an outer surface facing away from the battery cell, characterized in that: The clamping mechanism comprises: a first clamping member having a first clamping surface; and A second clamping member, wherein the second clamping member has a second clamping surface, and the second clamping surface is used to cooperate with the first clamping surface to clamp the protective film, the first clamping surface corresponds to the outer surface, and the second clamping surface corresponds to the inner surface; Wherein, the first clamping surface is provided with an air suction hole, and / or the second clamping surface is provided with an air blowing hole.

2. The clamping mechanism according to claim 1, characterized in that: The number of the air suction holes is multiple.

3. The clamping mechanism according to claim 2, characterized in that: The plurality of air intake holes include a plurality of rows of air intake holes, and each row of air intake holes includes a plurality of air intake holes.

4. The clamping mechanism according to claim 3, characterized in that: A plurality of first air extraction channels are provided in the first clamping member, each of the first air extraction channels corresponds to a row of the air suction holes, and the plurality of the air suction holes in each row are connected to the corresponding first air extraction channel; A second air extraction channel is also provided in the first clamping member, and the same end of a plurality of the first air extraction channels is connected to the second air extraction channel.

5. The clamping mechanism according to claim 4, characterized in that: One end of the first air extraction channel away from the second air extraction channel has a first opening penetrating through the first clamping member, and the clamping mechanism further includes a first sealing member, which seals the first opening.

6. The clamping mechanism according to claim 4 or 5, characterized in that: One end of the second air extraction channel is connected to one of the first air extraction channels, and the other end has a second opening that penetrates the first clamping member.

7. The clamping mechanism according to claim 6, characterized in that: The clamping mechanism further includes a first air nozzle, and the first air nozzle is installed at the second opening.

8. The clamping mechanism according to any one of claims 1 to 7, characterized in that: The number of the blowing holes is multiple.

9. The clamping mechanism according to claim 8, characterized in that: The plurality of air blowing holes include a plurality of rows of air blowing holes, and each row of air blowing holes includes a plurality of air blowing holes.

10. The clamping mechanism according to claim 9, characterized in that: A plurality of first blowing channels are provided in the second clamping member, each of the first blowing channels corresponds to a row of the blowing holes, and the plurality of the blowing holes in each row are connected to the corresponding first blowing channel; A second air blowing channel is also provided in the second clamping member, and the same end of a plurality of the first air blowing channels is connected to the second air blowing channel.

11. The clamping mechanism according to claim 10, characterized in that: One end of the first blowing channel away from the second blowing channel has a first opening penetrating through the second clamping member, and the clamping mechanism further includes a second sealing member, which seals the first opening.

12. The clamping mechanism according to claim 10 or 11, characterized in that: One end of the second blowing channel is connected to one of the first blowing channels, and the other end has a second opening that penetrates the second clamping member.

13. The clamping mechanism according to claim 12, characterized in that: The clamping mechanism further includes a second air nozzle, and the second air nozzle is installed at the second orifice.

14. The clamping mechanism according to any one of claims 1 to 13, characterized in that: The extension direction of the center line of the air suction hole and / or the air blowing hole is defined as a first direction, the clamping mechanism further has a second direction and a third direction, the first direction, the second direction and the third direction intersect each other, and the first clamping member and the second clamping member are enclosed on one side of the second direction to form an entrance for the protective film to extend into between the first clamping surface and the second clamping surface; The first clamping member is provided with two first cutting grooves, the two first cutting grooves are arranged side by side in the third direction and pass through the first clamping member on both sides in the first direction; The second clamping member is provided with two second cutting grooves, each of which is provided corresponding to one of the first cutting grooves and runs through two sides of the second clamping member in the first direction.

15. The clamping mechanism according to claim 14, characterized in that: The first cutting groove also passes through a side of the first clamping member close to the entry port; And / or, the second cutting groove also passes through a side of the second clamping member close to the entrance; And / or, the air suction hole is located between two of the first cutting grooves; And / or, the blowing hole is located between two of the second cutting grooves.

16. The clamping mechanism according to any one of claims 1 to 15, characterized in that: The clamping mechanism also includes a first driving member, which defines an extension direction of a center line of the air suction hole and / or the air blowing hole as a first direction, and the first driving member is used to drive the first clamping member and the second clamping member to move closer to and away from each other in the first direction.

17. The clamping mechanism according to claim 16, characterized in that: The first clamping member comprises a first plate body and a second plate body arranged at an angle, and the first plate body has the first clamping surface; The second clamping member comprises a first plate and a second plate arranged at an angle, and the second plate has the second clamping surface; The first clamping member is located on the inner side of the second clamping member, the angle formed by the first plate body and the second plate body is in the same direction as the angle formed by the first plate body and the second plate body, and the second plate body and the second plate are connected to the first driving member.

18. The clamping mechanism according to claim 17, characterized in that: The first clamping member further comprises a first connecting seat, and the first connecting seat is connected to an end of the second plate body away from the first plate body; The second clamping member further includes a second connecting seat, the second connecting seat is connected to a side of the second plate facing away from the first plate, and the second connecting seat and the first connecting seat are connected to the first driving member.

19. The clamping mechanism according to claim 18, characterized in that: The clamping mechanism also has a second direction, the second direction intersects with the first direction, and the first clamping member and the second clamping member are enclosed on one side of the second direction to form an entrance for the protective film to extend into between the first clamping surface and the second clamping surface; The clamping mechanism further includes a second driving member, and the second driving member is used to drive the first driving member, the first clamping member and the second clamping member to slide along a second direction.

20. A cutting device, characterized in that: include: A clamping mechanism, wherein the clamping mechanism is the clamping mechanism according to any one of claims 1 to 19, and the clamping mechanism is used to clamp the protective film wrapped around the outside of the battery; and The cutting mechanism comprises a third driving member and a cutter, wherein the cutter is connected to the third driving member and can be driven by the third driving member to slide in a direction parallel to the extension direction of the center line of the suction hole and / or the blowing hole to cut the protective film.

21. The cutting device according to claim 20, characterized in that: The outer side of the cutter is coated with an insulating layer; And / or, the cutter has a blade, and the extending direction of the blade is arranged at an angle to the first direction; And / or, the number of the clamping mechanisms is two, and the two clamping mechanisms are arranged at a relative interval; the number of the cutting mechanisms is two, and each cutting mechanism corresponds to one clamping mechanism.

22. The cutting device according to claim 20 or 21, characterized in that: The cutting mechanism further comprises a mounting seat, wherein the mounting seat is connected to the third driving member; The mounting seat is provided with a mounting groove, and one end of the cutter is mounted in the mounting groove.

23. The cutting device according to claim 22, characterized in that: The extension direction of the center line of the air suction hole and / or the air blowing hole is defined as a first direction, the clamping mechanism further has a second direction and a third direction, the first direction, the second direction and the third direction intersect each other, and the first clamping member and the second clamping member are enclosed on one side of the second direction to form an entrance for the protective film to extend into between the first clamping surface and the second clamping surface; The mounting seat is provided with mounting grooves on two opposite sides in the third direction, and one of the cutters is installed in each mounting groove.

24. A coating device, characterized in that: Comprising a cutting device as claimed in any one of claims 20 to 23.

25. The coating device according to claim 24, characterized in that The film-wrapping device further comprises a film-moving mechanism, wherein the film-moving mechanism comprises a fourth driving member and a film-moving sheet connected to the fourth driving member; The film-pushing sheet has a contact surface, and the contact surface is used to contact and drive the protective film. The contact surface is provided with a recessed groove, and one end of the fourth driving member connected to the film-pushing sheet is embedded in the recessed groove.

26. A battery production system, characterized in that: Comprising the coating device as claimed in claim 24 or 25.

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