Film coating device and battery processing equipment

Abstract

The utility model relates to a film coating device and battery processing equipment, and the film coating device comprises a film coating mechanism which is used for coating the periphery of a battery monomer with a thermal shrinkage film; and the hot-pressing mechanism comprises a first pre-pressing piece and a second pre-pressing piece which are arranged at an interval along a preset direction, a hot-pressing space is formed between the first pre-pressing piece and the second pre-pressing piece, and at least one of the first pre-pressing piece and the second pre-pressing piece is movably arranged along the preset direction so as to attach the thermal shrinkage film to the battery monomer. According to the application, firstly, the periphery of the battery monomer is coated with the thermal shrinkage film through the film coating mechanism, so that the thermal shrinkage film is more smoothly attached to the surface of the battery monomer, then, the battery monomer coated with the film is placed in the hot pressing space, and the first pre-pressing piece and the second pre-pressing piece can perform hot pressing on the battery monomer; the thermal shrinkage film is attached to the surface of the battery monomer in a hot pressing manner, so that rapid shaping of the battery monomer is realized, the flatness of the thermal shrinkage film on the surface of the battery monomer is improved, and the film coating quality of the battery monomer is improved.

Description

Technical Field

[0001] The present application relates to the technical field of batteries, and particularly to a film coating device and a battery processing device. Background Art

[0002] After the battery cell is manufactured, it is necessary to wrap a heat-shrinkable film around the outer periphery of the battery cell. The heat-shrinkable film forms a heat-shrinkable wrap around the battery cell to play a role in protection and isolation. Currently, in the process of wrapping the heat-shrinkable film, the heat-shrinkable film is usually pre-treated to form a film sleeve, and the film sleeve is sleeved around the outer periphery of the battery cell, and then the film sleeve is heated to make it heat-shrink and wrap the battery cell.

[0003] However, in the above structure, during the heat-shrinking process, the heat-shrinkable film is likely to form wrinkles on the surface of the battery cell, affecting the film coating quality of the battery cell. Summary of the Utility Model

[0004] Based on this, it is necessary to provide a film coating device and a battery processing device for the problem that the heat-shrinkable film is likely to form wrinkles on the surface of the battery cell during the current heat-shrinking process.

[0005] In a first aspect, the present application provides a film coating device, including a film coating mechanism and a hot pressing mechanism. The film coating mechanism is used to wrap the heat-shrinkable film around the outer periphery of the battery cell. The hot pressing mechanism includes a first pre-pressing member and a second pre-pressing member that are spaced apart along a preset direction, and a hot pressing space for accommodating the battery cell after film coating is formed between the two. At least one of the first pre-pressing member and the second pre-pressing member is movably arranged along the preset direction to hot press the battery cell in the hot pressing space and attach the heat-shrinkable film to the battery cell.

[0006] With the above structure, first, the heat-shrinkable film is wrapped around the outer periphery of the battery cell by the film coating mechanism, so that the heat-shrinkable film fits more flatly on the surface of the battery cell. Then, the battery cell after film coating is placed in the hot pressing space. The first pre-pressing member and the second pre-pressing member can hot press the battery cell, and the heat-shrinkable film is attached to the surface of the battery cell by hot pressing, realizing rapid shaping of the battery cell, and improving the flatness of the heat-shrinkable film on the surface of the battery cell, and improving the film coating quality of the battery cell.

[0007] In some embodiments, the first pre-pressing member and the second pre-pressing member respectively have hot pressing surfaces facing each other, and the hot pressing surfaces are used for surface contact with the large surfaces of the battery cell in the hot pressing space.

[0008] With the above structure, the heat-shrinkable film can be attached more flatly to the large surface of the battery cell under the action of the hot pressing surface, thereby improving the problem of wrinkles on the large surface of the heat-shrinkable film on the battery cell and improving the film coating quality of the battery cell.

[0009] In some embodiments, the film covering mechanism includes a base and positioning members disposed on the base. The base is used to carry the heat-shrinkable film and the battery cell, and the positioning members are used to position the heat-shrinkable film on the base.

[0010] Thus, the heat-shrinkable film can be stably disposed on the base through the positioning members, reducing the probability of the heat-shrinkable film shifting during the film covering process, so as to more smoothly wrap the heat-shrinkable film around the outer periphery of the battery cell.

[0011] In some embodiments, the positioning members include a plurality of suction cups uniformly disposed on the base, and each suction cup is used to adsorb the heat-shrinkable film.

[0012] Through the above structure, the positioning and fixing of the heat-shrinkable film on the base can be quickly achieved, and each suction cup can uniformly adsorb and fix the heat-shrinkable film, reducing the probability of the heat-shrinkable film shifting during the film covering process.

[0013] In some embodiments, the film covering mechanism further includes support components respectively disposed on opposite sides of the base along a first direction. The support components are movably disposed along a second direction and are used to attach the part of the heat-shrinkable film extending beyond the base to the side surface of the battery cell;

[0014] Wherein, the first direction is parallel to the base, and the second direction intersects the base.

[0015] By providing the support components, the folding of the heat-shrinkable film can be achieved, and the covering of the side surface of the battery cell by the heat-shrinkable film can be completed.

[0016] In some embodiments, the support component includes a first driving member and a support member connected to each other. The first driving member is used to drive the support member to move along the second direction. The support member has a support surface parallel to the second direction, and the support surface is used to make surface contact with the side surface of the battery cell.

[0017] Through the above structure, the heat-shrinkable film can be smoothly attached to the side surface of the battery cell, realizing the flat covering of the side surface of the battery cell by the heat-shrinkable film.

[0018] In some embodiments, the film covering mechanism further includes a smoothing component disposed on at least one side of the base along the first direction. The smoothing component is movably disposed along the first direction and is used to attach the heat-shrinkable film to the large surface of the battery cell.

[0019] Thus, by providing the smoothing component, the heat-shrinkable film can be attached to the large surface of the battery cell, thereby realizing the covering of the entire battery cell by the heat-shrinkable film.

[0020] In some embodiments, there are two smoothing components disposed on opposite sides of the base along the first direction, and both smoothing components are movably disposed along the first direction.

[0021] As a result, there are overlapping portions at both ends of the heat-shrinkable film on the large surface where the battery cell is arranged upward. By connecting these overlapping portions, the heat-shrinkable film can be more completely wrapped around the outer periphery of the battery cell.

[0022] In some embodiments, each flattening component includes a second driving member and a flattening member connected to each other. The second driving member is used to drive the corresponding flattening member to move along the first direction. The flattening member has a flattening surface parallel to the first direction, and the flattening surface is used for surface contact with the large surface of the battery cell.

[0023] With the above structure, the heat-shrinkable film can be more smoothly attached to the large surface of the battery cell, so as to improve the film wrapping quality of the battery cell.

[0024] In some embodiments, the film wrapping device further includes a gluing mechanism, and the gluing mechanism is used to apply glue between the edge of the heat-shrinkable film and the surface of the battery cell.

[0025] With the above structure, adhesive fixation between the heat-shrinkable film and the surface of the battery cell can be achieved, so that the heat-shrinkable film is more stably attached to the outer periphery of the battery cell.

[0026] In some embodiments, the film wrapping device further includes a moving mechanism. The moving mechanism is movably arranged between the film covering mechanism and the hot pressing mechanism, and is used to drive the battery cell to move between the film covering mechanism and the hot pressing mechanism.

[0027] By providing the moving mechanism, the battery cell can be smoothly transferred between the film covering mechanism and the hot pressing mechanism, so as to smoothly achieve the film wrapping process of the battery cell.

[0028] In a second aspect, the present application also provides a battery processing device, including the above-mentioned film wrapping device, and the film wrapping device is used to heat-shrink and fix the heat-shrinkable film on the outer periphery of the battery cell.

[0029] For the above-mentioned film wrapping device and battery processing device, first, the heat-shrinkable film is wrapped around the outer periphery of the battery cell through the film covering mechanism, so that the heat-shrinkable film fits more smoothly with the surface of the battery cell. Then, the battery cell after film covering is placed in the hot pressing space. The first pre-pressing member and the second pre-pressing member can perform hot pressing on the battery cell. By means of hot pressing, the heat-shrinkable film is attached to the surface of the battery cell, realizing rapid shaping of the battery cell, and improving the flatness of the heat-shrinkable film on the surface of the battery cell, and improving the film wrapping quality of the battery cell. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 It is a schematic structural diagram of the hot pressing mechanism in the film wrapping device according to one or more embodiments.

[0031] Figure 2 It is a three-dimensional structural diagram of the film covering mechanism in the film wrapping device according to one or more embodiments.

[0032] Figure 3 Side schematic view of the film covering mechanism in the film covering device according to one or more embodiments.

[0033] Figure 4 Structural schematic view of the glue coating process according to one or more embodiments.

[0034] Figure 5 Structural schematic view of the battery cell after film covering according to one or more embodiments.

[0035] Explanation of reference numerals: 100, film covering device; 200, heat-shrinkable film; 300, battery cell; 10, film covering mechanism; 20, hot pressing mechanism; 30, glue coating mechanism; 11, base; 12, support assembly; 13, smoothing assembly; 21, first pre-pressing member; 22, second pre-pressing member; 23, hot pressing space; 24, hot pressing surface; 121, first driving member; 122, support member; 123, support surface; 131, second driving member; 132, smoothing member; 133, smoothing surface; a, preset direction; b, first direction; c, second direction. Detailed description of the specific implementation

[0036] To make the above objects, features, and advantages of the present application more obvious and understandable, the following will describe the specific implementation of the present application in detail with reference to the accompanying drawings. Many specific details are set forth in the following description in order to fully understand the present application. However, the present application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without departing from the connotation of the present application. Therefore, the present application is not limited by the specific embodiments disclosed below.

[0037] In the description of the present application, it should be understood that if there are terms such as "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., the orientation or positional relationship indicated by these terms is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present application.

[0038] In addition, if the terms "first" and "second" appear, these terms are for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include at least one such feature. In the description of this application, if the term "plurality" appears, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise specifically defined.

[0039] In this application, unless otherwise clearly specified and defined, if terms such as "installed", "connected", "joined", "fixed", etc. appear, these terms should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements or the interaction relationship between two elements, unless otherwise clearly defined. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0040] In this application, unless otherwise clearly specified and defined, if there is a description such as a first feature being "on" or "under" a second feature, its meaning can be that the first and second features are in direct contact, or the first and second features are indirectly in contact through an intermediate medium. Moreover, the first feature being "above", "over" and "on top of" the second feature can be that the first feature is directly above or obliquely above the second feature, or merely indicates that the first feature has a higher horizontal height than the second feature. The first feature being "under", "beneath" and "underneath" the second feature can be that the first feature is directly below or obliquely below the second feature, or merely indicates that the first feature has a lower horizontal height than the second feature.

[0041] It should be noted that if an element is referred to as being "fixed to" or "disposed on" another element, it can be directly on the other element or there can also be an intermediate element. If an element is considered to be "connected" to another element, it can be directly connected to the other element or there may be an intermediate element at the same time. If so, the terms "vertical", "horizontal", "up", "down", "left", "right" and similar expressions used in this application are only for the purpose of illustration and do not represent the only implementation.

[0042] Currently, from the perspective of the development of the market situation, the application of power batteries is becoming more and more extensive. Power batteries are not only used in energy storage power systems such as hydropower, thermal power, wind power and solar power stations, but also widely used in electric vehicles such as electric bicycles, electric motorcycles, electric cars and other fields. With the continuous expansion of the application fields of power batteries, the market demand for them is also continuously increasing.

[0043] A battery cell is the smallest unit that makes up a battery. After the battery cell is manufactured, a heat-shrinkable film needs to be wrapped around the outer periphery of the battery cell to protect and isolate the battery cell.

[0044] Currently, general heat-shrinkable films are usually products that have been pre-treated to form a film sleeve. The film sleeve is sleeved on the outer periphery of the battery cell, and then heat-shrinkage treatment is carried out by heating, so that the film sleeve can be smoothly wrapped around the outer periphery of the battery cell. However, in order to enable the film sleeve to be smoothly sleeved on the outer periphery of the battery cell, the size of the film sleeve is usually slightly larger than the size of the battery cell. In this way, when heat-shrinking is carried out by heating, the heat-shrinkable film is likely to form wrinkles on the surface of the battery cell, affecting the quality of the film wrapping.

[0045] Based on the above considerations, in order to solve the problem that the heat-shrinkable film is likely to form wrinkles on the surface of the battery cell during the current heat-shrinkage treatment process, one or more embodiments of the present application provide a film wrapping device. First, the heat-shrinkable film is wrapped around the outer periphery of the battery cell through a film covering mechanism, so that the heat-shrinkable film fits more smoothly with the surface of the battery cell. Then, the battery cell after film covering is placed in a hot pressing space, and the first pre-pressing member and the second pre-pressing member can perform hot pressing on the battery cell, and the heat-shrinkable film is attached to the surface of the battery cell by hot pressing, realizing rapid shaping of the battery cell, and improving the flatness of the heat-shrinkable film on the surface of the battery cell and the quality of the film wrapping of the battery cell.

[0046] Referring to Figure 1 、 Figure 2 and Figure 3 , an embodiment of the present application provides a film wrapping device 100, including a film covering mechanism 10 and a hot pressing mechanism 20. The film covering mechanism 10 is used to wrap the heat-shrinkable film 200 around the outer periphery of the battery cell 300. The hot pressing mechanism 20 includes a first pre-pressing member 21 and a second pre-pressing member 22 that are spaced apart along a preset direction a, and a hot pressing space 23 for accommodating the battery cell 300 after film covering is formed between the two. At least one of the first pre-pressing member 21 and the second pre-pressing member 22 is movably arranged along the preset direction a to hot press the battery cell 300 in the hot pressing space 23 and attach the heat-shrinkable film 200 to the battery cell 300.

[0047] It should be noted that the film covering mechanism 10 refers to a structure that can wrap the heat-shrinkable film 200 around the outer periphery of the battery cell 300, and the hot pressing mechanism 20 refers to a structure that can smoothly attach the heat-shrinkable film 200 wrapped around the outer periphery of the battery cell 300 to the surface of the battery cell 300 by hot pressing. First, the heat-shrinkable film 200 is wrapped around the outer periphery of the battery cell 300 by using the film covering mechanism 10, then the battery cell 300 wrapped with the heat-shrinkable film 200 is placed in the hot pressing space 23, and then the heat-shrinkable film 200 is smoothly attached to the surface of the battery cell 300 by hot pressing through the first pre-pressing member 21 and the second pre-pressing member 22, and finally the film wrapping treatment of the battery cell 300 is realized.

[0048] Specifically, the preset direction a can be set as the vertical direction, that is, the first pre-pressing member 21 and the second pre-pressing member 22 are arranged at intervals in the vertical direction, so that a hot pressing space 23 is formed between the first pre-pressing member 21 and the second pre-pressing member 22. The battery cell 300 after film covering is placed in the hot pressing space 23. Among them, the battery cell 300 can be arranged in the hot pressing space 23 by means of clamping and fixing, or the battery cell 300 can be placed on one of the first pre-pressing member 21 and the second pre-pressing member 22 located below to carry the battery cell 300.

[0049] When the battery cell 300 is arranged in the hot pressing space 23 by clamping and fixing or other means, the first pre-pressing member 21 and the second pre-pressing member 22 are both movably arranged in the vertical direction. Control the first pre-pressing member 21 and the second pre-pressing member 22 to approach each other until the first pre-pressing member 21 and the second pre-pressing member 22 respectively contact the surface of the battery cell 300, so as to realize the attachment of the heat-shrinkable film 200 on the surface of the battery cell 300.

[0050] When the battery cell 300 is placed on one of the first pre-pressing member 21 and the second pre-pressing member 22 located below, one of the first pre-pressing member 21 and the second pre-pressing member 22 can be set to be movably arranged in the vertical direction. Of course, the first pre-pressing member 21 and the second pre-pressing member 22 can also be both movably arranged in the vertical direction, so that when the first pre-pressing member 21 and the second pre-pressing member 22 approach each other, the heat-shrinkable film 200 can be attached to the surface of the battery cell 300.

[0051] Through the above structure, first, the film covering mechanism 10 is used to cover the heat-shrinkable film 200 on the outer periphery of the battery cell 300, so that the heat-shrinkable film 200 fits more smoothly with the surface of the battery cell 300. Then, the battery cell 300 after film covering is placed in the hot pressing space 23. The first pre-pressing member 21 and the second pre-pressing member 22 can hot press the battery cell 300. By means of hot pressing, the heat-shrinkable film 200 is attached to the surface of the battery cell 300, realizing the rapid shaping of the battery cell 300, and improving the flatness of the heat-shrinkable film 200 on the surface of the battery cell 300 and the film covering quality of the battery cell 300.

[0052] In some embodiments, the first pre-pressing member 21 and the second pre-pressing member 22 respectively have hot pressing surfaces 24 facing each other, and the hot pressing surfaces 24 are used for surface contact with the large surface of the battery cell 300 in the hot pressing space 23.

[0053] It should be noted that the large surface of the battery cell 300 refers to the surface with the largest surface area in the battery cell 300. When the battery cell 300 is set in a rectangular structure, the battery cell 300 has two mutually parallel large surfaces. In addition, the battery cell 300 also has two mutually parallel side surfaces and two mutually parallel end surfaces. The two side surfaces and the two end surfaces are perpendicular to the large surface and respectively surround the periphery of the large surface, jointly forming the rectangular structure of the battery cell 300. Among them, at least one end surface is usually provided with structures such as electrode terminals and explosion-proof valves.

[0054] When wrapping the battery cell 300 with a film, the heat-shrinkable film 200 is usually wrapped on the two large surfaces and the two side surfaces of the battery cell 300. Therefore, when the battery cell 300 after film covering is placed in the hot pressing space 23, the two large surfaces of the battery cell 300 can be respectively arranged facing the first pre-pressing member 21 and the second pre-pressing member 22, so as to facilitate the first pre-pressing member 21 and the second pre-pressing member 22 to attach the heat-shrinkable film 200 to the large surface of the battery cell 300.

[0055] Specifically, the first pre-pressing member 21 and the second pre-pressing member 22 can be, but are not limited to, set as pressing plate structures. When the first pre-pressing member 21 and the second pre-pressing member 22 are arranged at intervals in the vertical direction and the first pre-pressing member 21 is located above the second pre-pressing member 22, the hot pressing surface 24 of the first pre-pressing member 21 is the lower surface of the first pre-pressing member 21, and the hot pressing surface 24 of the second pre-pressing member 22 is the upper surface of the second pre-pressing member 22.

[0056] The hot pressing surfaces 24 of the first pre-pressing member 21 and the second pre-pressing member 22 are both parallel to the large surface of the battery cell 300, so that the hot pressing surfaces 24 of the first pre-pressing member 21 and the second pre-pressing member 22 can better make surface contact with the large surface of the battery cell 300 and attach the heat-shrinkable film 200 more flatly to the large surface of the battery cell 300.

[0057] Thus, through the above structure, the heat-shrinkable film 200 can be more flatly attached to the large surface of the battery cell 300 under the action of the hot pressing surface 24, thereby improving the problem that the heat-shrinkable film 200 has wrinkles on the large surface of the battery cell 300 and improving the film covering quality of the battery cell 300.

[0058] In some embodiments, the film covering mechanism 10 includes a base 11 and a positioning member (not shown in the figure) arranged on the base 11. The base 11 is used to carry the heat-shrinkable film 200 and the battery cell 300, and the positioning member is used to position the heat-shrinkable film 200 on the base 11.

[0059] Specifically, the base 11 can be, but is not limited to, set as a bottom plate structure. First, the heat-shrinkable film 200 is laid on the bottom plate structure, and then the positioning member is used to position the heat-shrinkable film 200, so that the heat-shrinkable film 200 can be more stably arranged on the bottom plate structure.

[0060] Thus, the heat shrink film 200 can be stably set on the base 11 through the positioning member, reducing the probability of the heat shrink film 200 shifting during the film covering process, so as to more smoothly wrap the heat shrink film 200 around the outer periphery of the battery cell 300.

[0061] In some embodiments, the positioning member includes a plurality of suction cups uniformly arranged on the base 11, and each suction cup is used to adsorb the heat shrink film 200.

[0062] Specifically, each suction cup is uniformly arranged on the base 11. When the heat shrink film 200 is laid on the base 11, the suction cups on the base 11 can form an adsorption effect on the heat shrink film 200, positioning the heat shrink film 200 while fixing it on the base 11.

[0063] Through the above structure, the positioning and fixing of the heat shrink film 200 on the base 11 can be quickly realized, and each suction cup can uniformly adsorb and fix the heat shrink film 200, reducing the probability of the heat shrink film 200 shifting during the film covering process.

[0064] In some embodiments, the film covering mechanism 10 further includes support components 12 respectively arranged on opposite sides of the base 11 along the first direction b. The support components 12 are movably arranged along the second direction c and are used to attach the part of the heat shrink film 200 extending beyond the base 11 to the side surface of the battery cell 300. Wherein, the first direction b is parallel to the base 11, and the second direction c intersects with the base 11.

[0065] Specifically, when the battery cell 300 is placed on the base 11, the first direction b is arranged along the width direction of the battery cell 300, and the second direction c is arranged along the thickness direction of the battery cell 300. That is, the first direction b is the horizontal direction, and the second direction c is the vertical direction.

[0066] The area of the base 11 matches the area of the large surface of the battery cell 300, while the area of the heat shrink film 200 is usually larger than that of the base 11. Therefore, when the heat shrink film 200 is laid on the base 11, the heat shrink film 200 extends beyond the base 11 along the first direction b. At this time, the support components 12 are respectively located on opposite sides of the base 11 along the first direction b. Control the support components 12 to move upward along the second direction c, and lift a part of the heat shrink film 200 extending beyond the base 11 in the first direction b, so that this part of the heat shrink film 200 can be smoothly attached to the two side surfaces of the battery cell 300.

[0067] By setting the support components 12, the folding of the heat shrink film 200 can be realized, and the covering of the side surface of the battery cell 300 by the heat shrink film 200 can be completed.

[0068] In some embodiments, the support assembly 12 includes a first driving member 121 and a support member 122 that are interconnected. The first driving member 121 is configured to drive the support member 122 to move along the second direction c. The support member 122 has a support surface 123 parallel to the second direction c, and the support surface 123 is configured to be in surface contact with the side surface of the battery cell 300.

[0069] Specifically, the first driving member 121 may but is not limited to be configured as a driving motor, and the support member 122 may but is not limited to be configured as a support plate. The driving motor drives the support plate to move along the second direction c. Wherein, corresponding driving motors and support plates are respectively arranged on opposite sides of the base 11 along the first direction b, and the support plates are arranged parallel to the vertical direction. The support surfaces 123 of the two support plates face each other and are both oriented towards the base 11.

[0070] Thus, when the battery cell 300 is placed on the base 11, the support surfaces 123 of the two support plates are respectively parallel to the two side surfaces of the battery cell 300.

[0071] By driving the support plate to move upward by the driving motor, the heat shrink film 200 is pushed upward, and under the action of the support surface 123, the heat shrink film 200 is attached to the side surface of the battery cell 300, thereby realizing the covering of the side surface of the battery cell 300 by the heat shrink film 200.

[0072] With the above structure, the heat shrink film 200 can be smoothly attached to the side surface of the battery cell 300, and the side surface of the battery cell 300 can be evenly covered by the heat shrink film 200.

[0073] In some embodiments, the film covering mechanism 10 further includes a smoothing component 13 arranged on at least one side of the base 11 along the first direction b. The smoothing component 13 is movably arranged along the first direction b and is configured to attach the heat shrink film 200 to the large surface of the battery cell 300.

[0074] Specifically, when the battery cell 300 is placed on the base 11, one large surface of the battery cell 300 is supported on the base 11, and the other large surface is oriented upward.

[0075] The smoothing component 13 may be arranged on one side of the base 11 along the first direction b. At this time, the smoothing component 13 attaches the heat shrink film 200 on this side to the large surface of the battery cell 300. Of course, the smoothing component 13 may also be arranged on opposite sides of the base 11 along the first direction b. The smoothing components 13 on the opposite sides move along the second direction c to approach or separate from each other. When the two smoothing components 13 approach each other along the second direction c, the heat shrink films 200 on both sides in the second direction c are attached to the large surface of the battery cell 300.

[0076] Thus, by providing the smoothing component 13, the heat-shrinkable film 200 can be attached to the large surface of the battery cell 300, thereby achieving the overall wrapping of the battery cell 300 by the heat-shrinkable film 200.

[0077] In some embodiments, there are two smoothing components 13 disposed on opposite sides of the base 11 along the first direction b, and both smoothing components 13 are movably disposed along the first direction b.

[0078] As Figure 4 and Figure 5 shown, when the two smoothing components 13 are respectively disposed on opposite sides of the base 11 along the first direction b, first control one smoothing component 13 to move close to the base 11 along the first direction b, and attach the heat-shrinkable film 200 on this side to the large surface of the battery cell 300. Then, control the other smoothing component 13 to move close to the base 11 along the first direction b, and attach the heat-shrinkable film 200 on this side to the large surface of the battery cell 300.

[0079] Thus, there is an overlapping portion at both ends of the heat-shrinkable film 200 on the large surface of the battery cell 300 arranged upward. By connecting this overlapping portion, the heat-shrinkable film 200 can be more completely wrapped around the outer periphery of the battery cell 300.

[0080] In some embodiments, each smoothing component 13 includes a second driving member 131 and a smoothing member 132 connected to each other. The second driving member 131 is used to drive the corresponding smoothing member 132 to move along the first direction b. The smoothing member 132 has a smoothing plane 133 parallel to the first direction b, and the smoothing plane 133 is used for surface contact with the large surface of the battery cell 300.

[0081] Specifically, the second driving member 131 can be, but is not limited to, a driving motor, and the smoothing member 132 can be, but is not limited to, a smoothing plate. The smoothing plate is arranged in the horizontal direction, and the corresponding smoothing plate is driven to move along the first direction b by the driving motor.

[0082] Among them, the smoothing planes 133 of the two smoothing plates are both lower surfaces. First, control the driving motor on one side to drive the smoothing plate connected thereto to move in the direction close to the base 11, and the smoothing plate attaches the heat-shrinkable film 200 on this side to the large surface of the battery cell 300. Then, control the driving motor on the other side to drive the smoothing plate connected thereto to move in the direction close to the base 11, and the smoothing plate attaches the heat-shrinkable film 200 on this side to the large surface of the battery cell 300, thereby completing the wrapping of the battery cell 300 by the heat-shrinkable film 200.

[0083] With the above structure, the heat-shrinkable film 200 can be attached to the large surface of the battery cell 300 more smoothly, so as to improve the film wrapping quality of the battery cell 300.

[0084] In some embodiments, the film wrapping device 100 further includes a glue coating mechanism 30, which is used to apply glue between the edge of the heat-shrinkable film 200 and the surface of the battery cell 300.

[0085] When the flattening member 132 on one side is controlled to attach the heat-shrinkable film 200 on this side to the large surface of the battery cell 300, the glue coating mechanism 30 is controlled to apply glue between the edge of the heat-shrinkable film 200 and the large surface of the battery cell 300, so that the heat-shrinkable film 200 can be stably attached to the large surface of the battery cell 300 and prevent the heat-shrinkable film 200 from shifting.

[0086] Further, after the glue coating is completed, the flattening member 132 on the other side is controlled to attach the heat-shrinkable film 200 on this side to the large surface of the battery cell 300. At this time, there is an overlapping part between the heat-shrinkable film 200 on this side and the heat-shrinkable film 200 on the other side, that is, a part of the heat-shrinkable film 200 on this side will cover the heat-shrinkable film 200 that has been attached to the large surface. At this time, the previously applied glue can also achieve the adhesive fixation of the heat-shrinkable film 200 on this side.

[0087] Through the above structure, the adhesive fixation between the heat-shrinkable film 200 and the surface of the battery cell 300 can be realized, so that the heat-shrinkable film 200 is more stably attached to the outer periphery of the battery cell 300.

[0088] In some embodiments, the film wrapping device 100 further includes a moving mechanism (not shown in the figure), which is movably arranged between the film covering mechanism 10 and the hot pressing mechanism 20 and is used to drive the battery cell 300 to move between the film covering mechanism 10 and the hot pressing mechanism 20.

[0089] Specifically, the moving mechanism can be but is not limited to being set as a robotic arm, a clamping component or other structures. After the battery cell 300 is covered with the heat-shrinkable film 200 on the film covering mechanism 10, the moving mechanism is controlled to transfer the battery cell 300 covered with the film on the film covering mechanism 10 to the hot pressing space 23 of the hot pressing mechanism 20, so as to facilitate the hot pressing mechanism 20 to hot press and fix the heat-shrinkable film 200 on the large surface of the battery cell 300, thereby realizing the smooth covering of the heat-shrinkable film 200 on the outer periphery of the battery cell 300.

[0090] Thus, by setting the moving mechanism, the battery cell 300 can be smoothly transferred between the film covering mechanism 10 and the hot pressing mechanism 20, thereby smoothly realizing the film wrapping process of the battery cell 300.

[0091] Based on the same concept as the above film wrapping device 100, the present application further provides a battery processing device, including the above-mentioned film wrapping device 100, and the film wrapping device 100 is used to heat-shrink and fix the heat-shrinkable film 200 on the outer periphery of the battery cell 300.

[0092] In one or more embodiments, first, the heat-shrinkable film 200 is laid on the base 11, and the heat-shrinkable film 200 is adsorbed and fixed by the suction cups on the base 11. Then, the battery cell 300 is clamped and placed on the heat-shrinkable film 200 of the base 11.

[0093] The first driving member 121 drives the support member 122 to move upward, jacks up the heat-shrinkable film 200 extending beyond the base 11 in the first direction b, and attaches the heat-shrinkable film 200 to the side surface of the battery cell 300 through the support surface 123 of the support member 122.

[0094] Further, the second driving member 131 is controlled to first drive the smoothing member 132 on one side to move toward the direction close to the base 11, and attach the heat-shrinkable film 200 on this side to the large surface of the battery cell 300. The gluing mechanism 30 applies glue between the edge of the heat-shrinkable film 200 and the large surface of the battery cell 300 to adhesively fix the heat-shrinkable film 200 and the battery cell 300.

[0095] Then, the second driving member 131 on the other side is controlled to drive the smoothing member 132 on the other side to move toward the direction close to the base 11, and attach the heat-shrinkable film 200 on this side to the large surface of the battery cell 300. Meanwhile, under the smoothing action of the smoothing member 132, the heat-shrinkable film 200 is connected end to end through the previously applied glue, and adhesively fixed to the large surface of the battery cell 300.

[0096] Thus, the covering of the heat-shrinkable film 200 around the battery cell 300 is completed. The moving mechanism is controlled to transfer the battery cell 300 already covered with the film on the film covering mechanism 10 to the hot pressing space 23 of the hot pressing mechanism 20, and then the first pre-pressing member 21 and the second pre-pressing member 22 are controlled to perform hot pressing and shaping on the battery cell 300, so that the heat-shrinkable film 200 is flatly attached to the large surface of the battery cell 300.

[0097] The technical features of the above-described embodiments can be combined arbitrarily. For the sake of brevity of description, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, it should be considered as the scope recorded in this specification.

[0098] The above-described embodiments only represent several implementation manners of the present application. The description is relatively specific and detailed, but it should not be construed as a limitation on the scope of the patent application. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present application, several deformations and improvements can still be made, and these all belong to the protection scope of the present application. Therefore, the protection scope of the patent of the present application should be subject to the appended claims.

Claims

1. A coating device, characterized in that: include: A film covering mechanism, used for covering the outer periphery of the battery cell with a heat shrink film; and The hot pressing mechanism includes a first pre-pressing member and a second pre-pressing member arranged at intervals along a preset direction, and the interval between the two forms a hot pressing space for accommodating the battery monomer after coating. At least one of the first pre-pressing member and the second pre-pressing member is movably arranged along the preset direction to hot press the battery monomer in the hot pressing space and attach the heat shrink film to the battery monomer.

2. The coating device according to claim 1, characterized in that: The first pre-pressing member and the second pre-pressing member respectively have heat-pressing surfaces facing each other, and the heat-pressing surfaces are used to contact with the large surface of the battery cell in the heat-pressing space.

3. The coating device according to claim 1, characterized in that: The film laminating mechanism comprises a base and a positioning member arranged on the base, the base is used to carry the heat shrinkable film and the battery cell, and the positioning member is used to position the heat shrinkable film on the base.

4. The coating device according to claim 3, characterized in that: The positioning member includes a plurality of suction cups uniformly arranged on the base, and each suction cup is used for adsorbing the heat shrink film.

5. The coating device according to claim 3, characterized in that: The film laminating mechanism further includes support components respectively disposed on opposite sides of the base along a first direction, the support components being movably disposed along a second direction and used to adhere the portion of the heat shrink film that exceeds the base to the side surface of the battery cell; Wherein, the first direction is parallel to the base, and the second direction intersects with the base.

6. The coating device according to claim 5, characterized in that: The support assembly includes a first driving member and a supporting member connected to each other, the first driving member is used to drive the supporting member to move along the second direction, the supporting member has a supporting surface parallel to the second direction, and the supporting surface is used to contact the side surface of the battery cell.

7. The coating device according to claim 5, characterized in that: The film coating mechanism further includes a smoothing component disposed on at least one side of the base along the first direction. The smoothing component is movably disposed along the first direction and is used to adhere the heat shrink film to the large surface of the battery cell.

8. The coating device according to claim 7, characterized in that: The smoothing components include two components arranged at opposite sides of the base along the first direction, and the two smoothing components are movably arranged along the first direction.

9. The coating device according to claim 8, characterized in that: Each of the smoothing assemblies comprises a second driving member and a smoothing member connected to each other, wherein the second driving member is used to drive the corresponding smoothing member to move along the first direction, and the smoothing member has a smoothing surface parallel to the first direction, and the smoothing surface is used to contact the large surface of the battery cell.

10. The coating device according to claim 1, characterized in that: The film wrapping device further comprises a glue coating mechanism, and the glue coating mechanism is used for coating glue between the edge of the heat shrink film and the surface of the battery cell.

11. The coating device according to claim 1, characterized in that: The coating device further comprises a moving mechanism, which is movably disposed between the coating mechanism and the hot pressing mechanism and is used to drive the battery cell to move between the coating mechanism and the hot pressing mechanism.

12. A battery processing device, characterized in that: It comprises a wrapping device as described in any one of claims 1 to 11, wherein the wrapping device is used to heat-shrink and fix the heat shrink film to the periphery of the battery cell.

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