CN115832388A

CN115832388A - Film pasting device, film pasting system and film pasting method

Info

Publication number: CN115832388A
Application number: CN202111441118.4A
Authority: CN
Inventors: 孙燕林; 张志刚; 罗磊; 陈蕃科; 夏义俊
Original assignee: Contemporary Amperex Technology Co Ltd
Current assignee: Contemporary Amperex Technology Co Ltd
Priority date: 2021-11-30
Filing date: 2021-11-30
Publication date: 2023-03-21

Abstract

The application provides a pad pasting device, pad pasting system and pad pasting method for attaching insulating film to battery module, this pad pasting device includes: the film taking mechanism is used for clamping the insulating film and moving the insulating film to a position corresponding to a film pasting part on the first outer surface of the battery module; the film sticking mechanism is used for sticking the insulating film to the film sticking part; and the film folding mechanism is used for folding the insulating film from the film pasting part to a second outer surface vertical to the first outer surface and pressing the insulating film on the second outer surface. The application discloses pad pasting device can carry out the pad pasting operation to the position that parts such as end plates interfered, realizes battery module's complete insulation to avoid the problem that the bounce-back of artifical pad pasting upwarps, improved pad pasting quality and pad pasting efficiency.

Description

Film pasting device, film pasting system and film pasting method

Technical Field

The application relates to the technical field of batteries, in particular to a film sticking device, a film sticking system and a film sticking method.

Background

Energy conservation and emission reduction are the key points of sustainable development of the automobile industry. Under such circumstances, electric vehicles are an important component of sustainable development of the automobile industry due to their energy saving and environmental protection advantages. In the case of electric vehicles, battery technology is an important factor in the development thereof. The battery is protected from short circuit in the use process, and the safety and the reliability of the battery are improved.

Disclosure of Invention

The application provides a pad pasting device, pad pasting system and pad pasting method, automatically to battery module attached insulating film, guarantee battery insulating properties, the protection battery does not take place the short circuit in the use, improves the security, the reliability of battery.

The present application provides in a first aspect a film laminating apparatus for laminating an insulating film to a battery module, the film laminating apparatus comprising: the film taking mechanism is used for clamping the insulating film and moving the insulating film to a position corresponding to a film pasting part on the first outer surface of the battery module; the film sticking mechanism is used for sticking the insulating film to the film sticking part; and the film folding mechanism is used for folding the insulating film from the film pasting part to a second outer surface vertical to the first outer surface and pressing the insulating film on the second outer surface.

The application discloses pad pasting device can carry out the pad pasting operation to the position that parts such as end plate interfered, realizes battery module's complete insulation to the problem of the bounce-back upwarp of artifical pad pasting has been avoided, has improved pad pasting quality and pad pasting efficiency.

In some embodiments, the film folding mechanism includes a first pushing portion, a second pushing portion and a film folding portion, the first pushing portion can drive the second pushing portion and the film folding portion to move along a direction perpendicular to the first outer surface, and the second pushing portion can drive the film folding portion to attach the insulating film to the second outer surface.

In above-mentioned technical scheme, jointly drive a membrane portion motion through first promotion portion and second promotion portion, can make a membrane portion accomplish the automatic operation that the pad pasting rolled over the membrane, realize the pad pasting to the complicated surface of battery module and roll over the membrane, improve the pad pasting quality, it is efficient.

In some embodiments, the film folding portion comprises a film folding plate and a connecting frame, the film folding plate is fixedly connected to the connecting frame, and one end of the connecting frame, which is far away from the film folding plate, is connected with the second pushing portion.

In the technical scheme, the connecting frame is driven to move through the second pushing part, so that the film folding plate can be driven to swing towards the direction close to the second outer surface, the film folding plate can extrude the insulating film, namely the second outer surface, and the insulating film is tightly attached to the second outer surface.

In some embodiments, the film sticking device further comprises a main body frame, the connecting frame is hinged with the main body frame, and when the second pushing part drives the connecting frame to move, the connecting frame drives the film folding plate to rotate around the hinged position of the connecting frame and the main body frame.

In the technical scheme, the hinge position of the connecting frame and the main body frame is used as a fulcrum, the film folding plate rotates around the hinge position, the swing of the film folding plate is realized, and the film folding plate can fold the insulating film.

In some embodiments, the connecting frame is connected with the main body frame through a pin shaft, the main body frame is provided with a strip-shaped groove, and the pin shaft penetrates through the strip-shaped groove and can slide in the strip-shaped groove.

In above-mentioned technical scheme, make the round pin axle slide in the bar inslot to can adjust the shift position of a membrane portion, prevent to roll over membrane portion and die at the wobbling in-process card, improve the flexibility of rolling over the membrane operation.

In some embodiments, the membrane folding plate comprises a flexible sheet which can be elastically deformed under the action of force, and the flexible sheet is driven by the first pushing part and the second pushing part to press the insulating membrane.

In the above technical solution, when the flexible sheet leaves the first outer surface of the battery module, the extrusion force applied to the flexible sheet is released, the elastic deformation of the flexible sheet is recovered, the insulating film is folded toward the second outer surface, and the flexible sheet can press the folded insulating film against the second outer surface.

In some embodiments, the film laminating mechanism includes a first moving portion, a second moving portion and at least one film pressing roller, the first moving portion can drive the film pressing roller to move above the film laminating portion to press the insulating film onto the film laminating portion, and the second moving portion can drive the film pressing roller to roll along the film laminating portion.

In some embodiments, the laminating mechanism includes two lamination rollers, the two lamination rollers being juxtaposed.

In above-mentioned technical scheme, set up two squeeze film rollers, push down and remove another squeeze film roller below with a squeeze film roller 123 earlier, can roll the pressfitting insulating film to the pad pasting position with the insulating film pressfitting in the space between two squeeze film rollers again to both sides simultaneously, improve work efficiency.

In some embodiments, the first outer surface is a bottom surface of the battery module.

According to the technical scheme, the insulating film can be attached to the corner position of the battery module by firstly attaching the film on the bottom surface and then turning the insulating film to the side plate direction, so that the problem that the insulating film cannot be attached to the side plate of the end plate due to interference of the end plate is avoided, the problem that the blue film is attached to the individual part of the battery module in a leakage mode is solved, and the risk of short circuit of the battery module is reduced.

A second aspect of the present application provides a film attaching system for attaching an insulating film to a battery module, comprising: the film supply device is used for supplying an insulating film material; the film drawing and cutting device is used for drawing the insulating film material out and cutting the insulating film material to form an insulating film; a film attaching device for attaching the insulating film to the battery module; wherein, the pad pasting device includes: the film taking mechanism is used for clamping the insulating film and moving the insulating film to a position corresponding to a film sticking part on the first outer surface of the battery module; the film sticking mechanism is used for sticking the insulating film to the film sticking part; and the film folding mechanism is used for folding the insulating film from the film pasting part to a second outer surface vertical to the first outer surface and pressing the insulating film on the second outer surface.

In some embodiments, the film lamination system further comprises a positioning and overturning device, which overturns the externally conveyed battery module to enable the first outer surface to face the film lamination mechanism and fixes the battery module at a fixed position.

The application discloses pad pasting system, through pad pasting mechanism with the insulating film attached to predetermined position after, recycle and roll over the membrane mechanism and turn over the insulating film and paste tightly, can carry out the pad pasting operation to the position that parts such as end plate interfered, realize battery module's complete insulation to the problem of the bounce-back upwarp of artifical pad pasting has been avoided, has improved pad pasting quality and pad pasting efficiency.

A third aspect of the present application provides a film attaching method for attaching an insulating film to a battery module, comprising the steps of: providing an insulating film material; pulling out the provided insulating film material and cutting to form an insulating film; attaching an insulating film to the battery module; wherein the insulating film is clamped and moved to a position corresponding to a film-attaching portion on a first outer surface of the battery module; attaching an insulating film to the film attaching part; and folding the insulating film from the film pasting part to a second outer surface vertical to the first outer surface and pressing the insulating film on the second outer surface.

In some embodiments, attaching the insulating film to the film attachment portion includes: arranging two film pressing rollers in parallel; moving the two film pressing rollers to a position above the center of the film pasting part, and enabling the two film pressing rollers to be in contact with each other, wherein the distance between the two film pressing rollers and the insulating film is larger than or equal to the diameter of the film pressing rollers; pressing one of the film pressing rollers downwards, pressing the insulating film to a film pasting part, and rolling the film pressing roller towards the other film pressing roller for the diameter distance of one film pressing roller and then rolling the film pressing roller for the diameter distance of one film pressing roller in the opposite direction; pressing the other film pressing roller to the film pasting part; the two film pressing rollers roll towards the direction far away from the other film pressing roller respectively, and the insulating film is completely attached to the film attaching part.

In some embodiments, folding over and pressing the insulating film from the film-attaching portion to a second outer surface perpendicular to the first outer surface includes: arranging a membrane folding plate, wherein the membrane folding plate comprises a flexible sheet which can generate elastic deformation under stress; moving the film folding plate to a direction vertical to the first outer surface, contacting with the insulating film at the film pasting part and enabling the flexible thin plate to generate elastic deformation; swinging the film folding plate towards the direction towards the second outer surface, and folding the insulating film towards the second outer surface; the flexible sheet is pressed against the insulating film to press the insulating film to the second outer surface.

In some embodiments, before the insulating film is attached to the battery module, the method further comprises the step of positioning and turning over the battery, turning over the externally conveyed battery module so that the first outer surface faces the insulating film, and fixing the battery module in a fixed position.

According to the film pasting method, after the insulating film is attached to the preset position, the insulating film is turned over and pasted tightly, film pasting operation can be carried out on positions where components such as the end plate interfere, complete insulation of the battery module is achieved, the problem that rebounding and warping of manual film pasting are avoided, and film pasting quality and film pasting efficiency are improved.

It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the application.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings used in the embodiments of the present application will be briefly described below, and it is obvious that the drawings described below are only specific embodiments of the present application, and those skilled in the art can obtain other embodiments from the following drawings without inventive effort.

FIG. 1 is a schematic structural diagram of a vehicle provided in some embodiments of the present application;

fig. 2 is an exploded schematic view of a battery provided in accordance with some embodiments of the present application;

fig. 3 is a schematic diagram of a battery cell arrangement structure according to an embodiment of the present disclosure;

fig. 4 is a schematic structural diagram of a battery module according to an embodiment of the present disclosure;

fig. 5 is a schematic structural diagram of a film pasting device according to an embodiment of the present application;

FIG. 6 is a left side view of a film application device according to an embodiment of the present disclosure;

FIG. 7 is a schematic structural view of a film sticking device according to another direction provided in the embodiments of the present application;

FIG. 8 is a schematic view illustrating a film folding operation performed by the film folding mechanism according to an embodiment of the present disclosure;

FIG. 9 is a schematic structural view of another direction of the film folding device provided in the embodiment of the present application;

FIG. 10 is a front view of a film folding device provided in an embodiment of the present application;

FIG. 11 is a schematic view of a squeeze film roller descending during a squeeze film operation of the squeeze film mechanism;

FIG. 12 is a schematic view of the lowered lamination roller of FIG. 11 moving toward another lamination roller;

FIG. 13 is a schematic view of the descending lamination roller of FIG. 12 reaching under another lamination roller moving in a reverse direction;

FIG. 14 is a schematic view of another lamination roller being lowered after the lowered lamination roller has been moved to the home position;

FIG. 15 is a schematic structural diagram of a film sticking system according to an embodiment of the present disclosure;

FIG. 16 is a front view of the film attachment system 1000 of FIG. 15;

fig. 17 is a flowchart of a film attaching method according to an embodiment of the present application;

FIG. 18 is a flow chart of the application of some embodiments of the present application to a portion of an insulating film to be laminated;

FIG. 19 is a flow chart of a film folding operation provided in some embodiments of the present application.

Reference numerals:

1-a vehicle; 2-a battery; 3-a controller; 4-a motor; 5-a box body;

51-a first tank portion; 52-a second tank portion; 53-an accommodation space;

20-a battery cell; 200-a battery module;

201-a backplane; 202-side plate; 203-end plate;

21-an insulating film; 22-a first outer surface; 221-a film-sticking part; 23-a second outer surface;

100-a film sticking device;

110-a film taking mechanism;

120-a film sticking mechanism;

121-a first moving part; 122-a second moving part; 123-film pressing roller;

130-a film folding mechanism;

131-a first pushing part;

1311-first cylinder; 1312-a support frame;

132-a second pushing portion;

1321-including a second cylinder; 1322-mounting seats;

133-a membrane folding part;

1331-membrane folding plate; 13311-soft sheet; 1332-a linker; 1333-a pin;

140-a body frame;

141-a strip groove;

1000-film pasting system;

300-a film supply device;

400-a film drawing and cutting device;

500-positioning and overturning device;

510-a clamping jaw; 520-turnover mechanism.

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present application and together with the description, serve to explain the principles of the application.

Detailed Description

For better understanding of the technical solutions of the present application, the following detailed descriptions of the embodiments of the present application are provided with reference to the accompanying drawings.

It should be understood that the following examples are only some of the examples of the present application. All other embodiments obtained by a person skilled in the art without making any inventive step are within the scope of protection of the present application, based on the following examples.

The terminology used in the embodiments of the present application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. As used in the examples of this application and the appended claims, the singular forms "a", "an", and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise.

It should be understood that the term "and/or" as used herein is merely one type of association that describes an associated object, meaning that three relationships may exist, e.g., a and/or B may mean: a exists alone, A and B exist simultaneously, and B exists alone. In addition, the character "/" herein generally indicates that the former and latter associated objects are in an "or" relationship.

It should be noted that the terms "upper", "lower", "left", "right", and the like used in the embodiments of the present application are described in terms of the angles shown in the drawings, and should not be construed as limiting the embodiments of the present application. In addition, in this context, it will also be understood that when an element is referred to as being "on" or "under" another element, it can be directly on "or" under "the other element or be indirectly on" or "under" the other element via an intermediate element.

At present, the application of power batteries is more and more extensive from the development of market conditions. The power battery is not only applied to energy storage power supply systems such as hydraulic power, firepower, wind power and solar power stations, but also widely applied to electric vehicles such as electric bicycles, electric motorcycles, electric automobiles and the like, and a plurality of fields such as military equipment and aerospace. With the continuous expansion of the application field of the power battery, the market demand is also continuously expanding. In the field of electric vehicles such as electric vehicles, the power battery is used as a core component of the vehicle, which is one of the most important standards for considering the performance of the power battery, with regard to the safety of the vehicle and the safety of the power battery.

Reference to a battery in embodiments of the present application refers to a single physical module that includes one or more battery cells to provide higher voltage and capacity. For example, the battery referred to in the present application may include a battery module or a battery pack, etc. Batteries generally include a case for enclosing one or more battery cells. The box can avoid liquid or other foreign matters to influence the charging or discharging of battery monomer.

At present, a battery cell generally includes a casing, an electrode assembly electrically connected to the end cap assembly, and an end cap assembly covering an opening of the casing, wherein the casing and the end cap assembly are generally fixed by welding to provide a sealed space for the electrode assembly and an electrolyte. The electrode assembly consists of a cathode plate, an anode plate and a diaphragm. The battery cell mainly depends on metal ions moving between the cathode pole piece and the anode pole piece to work. The cathode pole piece comprises a cathode current collector and a cathode active substance layer, wherein the cathode active substance layer is coated on the surface of the cathode current collector, the cathode current collector which is not coated with the cathode active substance layer protrudes out of the cathode current collector which is coated with the cathode active substance layer, and the cathode current collector which is not coated with the cathode active substance layer is used as a cathode lug. The anode active material layer is coated on the surface of the anode current collector, the anode current collector which is not coated with the anode active material layer protrudes out of the anode current collector which is coated with the anode active material layer, and the anode current collector which is not coated with the anode active material layer is used as an anode tab. In order to ensure that the high current can be passed without fusing, a plurality of cathode tabs are laminated together, and a plurality of anode tabs are laminated together.

When the battery cells are assembled into a battery, the number of the battery cells can be set to any value according to different power requirements. A plurality of battery cells may be connected in series, parallel, or series-parallel to achieve greater capacity or power. The plurality of battery monomers can also be connected in series or in parallel or in series-parallel to form a battery module, and the plurality of battery modules are connected in series or in parallel or in series-parallel to form a battery. That is to say, a plurality of battery cells can directly constitute the battery, or a battery module can be firstly constituted, and then the battery module constitutes the battery, and is accommodated in the box body.

When assembling the battery cells into the battery module, generally, a bottom plate is provided, a plurality of battery cells are sequentially mounted on the bottom plate, and then side plates are provided at ends of the plurality of battery cells, respectively, to fix the plurality of battery cells as a unit. After the battery cells are assembled to form the battery module, insulating films are attached to the bottom plate and the side plates of the battery module to realize the insulating performance of the battery module.

In some embodiments, end plates connected to other battery modules or the outside are further disposed on the outer sides of the side plates along both sides of the length direction of the arrangement of the plurality of battery cells, and due to interference of the end plates, when the film attaching device attaches the insulating films to the bottom plate and the side plates, the film attaching operation cannot be performed on the side plates on the side of the end plates close to the bottom plate, so that the film attaching device cannot completely attach the insulating films to the battery modules, and complete insulation of the battery modules cannot be achieved.

In order to solve the curb plate pad pasting problem that the end plate is close to bottom plate one side, make battery module completely insulating, can only carry out the pad pasting operation to this position through the manual work usually, nevertheless because manual operation's error influences the standard nature of product, the unable assurance of artifical pad pasting compresses tightly the laminating with the insulating film moreover, can lead to the insulating film bounce-up of linking department at bottom plate and curb plate to stick up, such artifical pad pasting mode pad pasting quality is not high, and inefficiency.

In order to solve the problems, the film sticking device, the film sticking system and the film sticking method are provided, and the film sticking and folding mechanism is arranged on the film sticking device, so that an insulating film is automatically stuck on a battery module, the insulating property of the battery is ensured, the battery is protected from short circuit in the using process, and the safety and the reliability of the battery are improved.

The technical solution of the present application will be described in detail below.

The battery cell described in the embodiments of the present application is applicable to a battery and a device using the battery.

The device using the battery may be a vehicle, a mobile phone, a portable device, a notebook computer, a ship, a spacecraft, an electric toy, an electric tool, and the like. The vehicle can be a fuel oil vehicle, a gas vehicle or a new energy vehicle, and the new energy vehicle can be a pure electric vehicle, a hybrid electric vehicle or a range-extended vehicle and the like; spacecraft include aircraft, rockets, space shuttles, and spacecraft, among others; electric toys include stationary or mobile electric toys, such as game machines, electric car toys, electric ship toys, electric airplane toys, and the like; the electric power tools include metal cutting electric power tools, grinding electric power tools, assembly electric power tools, and electric power tools for railways, such as electric drills, electric grinders, electric wrenches, electric screwdrivers, electric hammers, electric impact drills, concrete vibrators, and electric planers. The embodiment of the present application does not specifically limit the above-described device using a battery.

For convenience of explanation, the following embodiments will be described by taking a device using a battery as an example of a vehicle.

Fig. 1 is a schematic structural diagram of a vehicle 1 according to some embodiments of the present application.

As shown in fig. 1, a battery 2 is disposed inside a vehicle 1, and the battery 2 refers to a single physical module including one or more battery cells to provide higher voltage and capacity, for example, the battery 2 mentioned in this application may include a battery module or a battery pack, etc. The battery 2 may be disposed at the bottom or the head or the tail of the vehicle 1. The battery 2 may be used for power supply of the vehicle 1, and for example, the battery 2 may serve as an operation power source of the vehicle 1. The vehicle 1 may further comprise a controller 3 and a motor 4, the controller 3 being adapted to control the battery 2 to power the motor 4, e.g. for start-up, navigation and operational power demands while driving of the vehicle 1.

Fig. 2 is an exploded view of a battery 2 according to some embodiments of the present disclosure.

As shown in fig. 2, the battery 2 includes a case 5 and a battery module 200, the battery module 200 being accommodated in the case 5, the battery module 200 including a plurality of battery cells 20 (see fig. 3).

The case 5 serves to receive the battery module 200, and the case 5 may have various structures. In some embodiments, the box body 5 may include a first box body portion 51 and a second box body portion 52, the first box body portion 51 and the second box body portion 52 cover each other, and the first box body portion 51 and the second box body portion 52 jointly define a receiving space 53 for receiving the battery cell 21. The second casing part 52 may be a hollow structure with one open end, the first casing part 51 may be a plate-shaped structure, and the first casing part 51 covers the open side of the second casing part 52 to form the casing 5 with the accommodating space 53; the first casing portion 51 and the second casing portion 52 may be hollow structures each having one side opened, and the opening side of the first casing portion 51 may be covered with the opening side of the second casing portion 52 to form the casing 5 having the accommodating space 53. Of course, the first and second casing portions 51 and 52 may be various shapes, such as a cylinder, a rectangular parallelepiped, or the like.

In order to improve the sealing property after the first casing portion 51 and the second casing portion 52 are connected, a sealing member, such as a sealant or a gasket, may be provided between the first casing portion 51 and the second casing portion 52.

The number of the battery cells 20 may be set to any number according to different power requirements. A plurality of battery cells 20 may be connected in series, parallel, or series-parallel to achieve greater capacity or power. The plurality of battery cells 20 are connected in series or in parallel or in series-parallel to form the battery module 200, and the plurality of battery modules 200 are connected in series or in parallel or in series-parallel to form the battery 2.

Fig. 3 is a schematic diagram of an arrangement structure of the battery cells 20 according to the embodiment of the present disclosure, and fig. 4 is a schematic diagram of a structure of the battery module 200 according to the embodiment of the present disclosure.

As shown in fig. 3 and 4, the battery module 200 includes a plurality of battery cells 20, a bottom plate 201, side plates 202, and end plates 203. The plurality of single batteries 20 are sequentially stacked along the length direction X of the battery module to form a single battery 20 arrangement structure, a bottom plate 201 is arranged at the bottom of the single battery 20 arrangement structure, side plates 202 are arranged at the two side ends of the single battery 20 arrangement structure along the length direction X of the battery module, and the side plates 202 can also be arranged along the width direction Y of the battery module. The arrangement structure of the battery cells 20 is further provided with end plates 203 connected to other battery modules 200 or the outside along the outer sides of the side plates 202 at both ends of the battery cell length direction X.

After the battery module 200 is assembled, the insulating film 21 needs to be attached to the bottom plate 201 and the side plate 202 of the battery module, the end plate 203 has a certain thickness and a certain height difference with the bottom plate 201 after the battery module is assembled, and when the film attaching device attaches the film to the bottom plate 201 and the side plate 202, the insulating film 21 cannot be attached to the side plate 202 of the end plate 203 facing the bottom plate 201 due to the interference of the end plate 203.

For this reason, the present application provides a film laminating apparatus 100 (see fig. 5) capable of folding the insulating film 21 in the direction of the side plate 202 and pressing the insulating film 21 onto the side plate 202 while adhering the insulating film 21 to the bottom plate 201.

Fig. 5 is a schematic structural diagram of a film laminating apparatus 100 according to an embodiment of the present disclosure.

As shown in fig. 5, the film pasting device 100 provided by the present application is used for pasting an insulating film 21 to a battery module 200, and the film pasting device 100 includes a film taking mechanism 110, a film pasting mechanism 120, and a film folding mechanism 130. The film taking mechanism 110 is used for clamping the insulating film 21 and moving the insulating film 21 to a position corresponding to a film attaching part 221 on the first outer surface 22 (see fig. 4) of the battery module 200; the film attaching mechanism 120 is used for attaching the insulating film 21 to the film attaching portion 221; the film folding mechanism 130 is used for folding the insulation film 21 from the film pasting part 221 to the second outer surface 23 perpendicular to the first outer surface 22 and pressing the insulation film to the second outer surface 23.

Referring to fig. 4 and 5, in some embodiments, the first outer surface 22 is an outer surface of the bottom plate 201 of the battery module 200, the second outer surface 23 is an outer surface of the side plate 202, and when the film sticking apparatus 100 sticks the insulating film 21 to the battery module 200, the film picking mechanism 110 aligns the clamped insulating film 21 with the film sticking portion 221 of the first outer surface 22, and then the film sticking mechanism 120 presses down to stick the insulating film 21 to the film sticking portion 221.

In some embodiments, the battery module 200 is in the upside-down state of fig. 4, i.e., the bottom plate 201 is located above in the battery module height direction Z, with the first outer surface 22, i.e., the outer surface of the bottom plate 201, facing the insulating film 21 and the film attaching mechanism 120. The film sticking mechanism 120 moves downward in the battery module height direction Z, i.e., in the direction of the insulating film 21 and the film sticking portion 221, until the insulating film 21 is stuck to the film sticking portion 221.

The insulating film 21 has a portion exceeding the edge of the first outer surface 22, and the film folding mechanism 130 folds the portion exceeding the insulating film 21 in the direction of the second outer surface 23 and presses the folded insulating film 21 onto the second outer surface 23, thereby completing the attachment of the insulating film 21.

In some embodiments, the first outer surface 22 may be an outer surface of the bottom plate 201 of the battery module 200, in other embodiments, the first outer surface 22 may also be an outer surface of the side plate 202, and when the first outer surface 11 is an outer surface of the side plate 202, the second outer surface perpendicular to the first outer surface 22 may be an outer surface of the bottom plate 201. It is understood that the first outer surface 22 and the second outer surface 23 are two outer surfaces perpendicular to each other, and when the insulating film 21 is attached to one of them, the excess portion of the insulating film 21 may be folded back in the other direction.

The film sticking device 100 disclosed by the application is characterized in that after the insulating film 21 is attached to a preset position through the film sticking mechanism 120, the film sticking mechanism 130 is recycled to turn over the insulating film 21 and stick tightly, the film sticking operation can be carried out on the positions where components such as the end plate 103 interfere, the complete insulation of the battery module 200 is realized, the problem that the manual film sticking rebounds and warps is avoided, and the film sticking quality and the film sticking efficiency are improved.

Fig. 6 is a left side view of a film sticking device 100 according to an embodiment of the present application.

As shown in fig. 6, in some embodiments, the film folding mechanism 130 includes a first pushing portion 131, a second pushing portion 132, and a film folding portion 133. The first pushing portion 131 can drive the second pushing portion 132 and the film folding portion 133 to move in a direction perpendicular to the first outer surface 22, and the second pushing portion 132 can drive the film folding portion 133 to adhere the insulating film 21 to the second outer surface 23. For convenience of description, the first outer surface 22 is an outer surface of the bottom plate 201 of the battery module 200, and the second outer surface 23 is an outer surface of the side plate 202.

In some embodiments, the first pushing part 131 includes a first cylinder 1311 and a support bracket 1312. The supporting bracket 1312 has one end fixedly connected to the first cylinder 1311 and the other end connected to the second pushing part 132, and supports the second pushing part 132. When the film folding mechanism 130 performs the film folding operation, the first air cylinder 1311 first drives the supporting frame 1312 to move along a direction perpendicular to the first outer surface 22 (the direction is the same as the height direction Z of the battery module), and the supporting frame 1312 drives the second pushing portion 132 and the film folding portion 133 to move together, so that the film folding portion 133 can reach the film sticking portion 221.

In some embodiments, the second pushing portion 132 includes a second cylinder 1321 and a mounting seat 1322, the second cylinder 1321 is mounted on the mounting seat 1322, and the mounting seat 1322 is fixedly connected to the supporting frame 1312 of the first pushing portion. The second cylinder 1321 is connected to the film folding portion 133, the second cylinder 1321 can move in a direction perpendicular to the second outer surface 23 (the direction is the same as the length direction X of the battery module), when the second cylinder 1321 is pushed in the length direction X of the battery module, the film folding portion 133 is driven to move, and the portion, exceeding the first outer surface 22, of the insulating film 21 is folded and pressed against the second outer surface 23 by the film folding portion 133.

Through first promotion portion 131 and the motion of second promotion portion 132 joint drive membrane folding portion 133, can make membrane folding portion 133 accomplish the automatic operation that the pad pasting rolled over the membrane, realize rolling over the membrane to the pad pasting of the complicated surface of battery module 200, improve the pad pasting quality, it is efficient.

With reference to fig. 6, in some embodiments, the membrane folding portion 133 includes a membrane folding plate 1331 and a connecting frame 1332, the membrane folding plate 1331 is fixedly connected to the connecting frame 1332, and an end of the connecting frame 1332 away from the membrane folding plate 1331 is connected to the second pushing portion 132.

In one embodiment, an end of the connection frame 1332, which is away from the membrane folding plate 1331, is hinged to the second cylinder 1321 of the second pushing part 132, and when the second cylinder 1321 pushes the connection frame 1332 in the direction perpendicular to the second outer surface 24 along the length direction X of the battery membrane block, the position where the connection frame 1332 is hinged to the second cylinder 1321 moves with the second cylinder 1321, and rotates at the hinged position. When the second cylinder 1321 pushes the connection frame 1332, the connection frame 1332 can drive the film folding plate 1331 to swing towards the direction approaching to the second outer surface 23, so that the film folding plate 1331 can press the insulating film 21 and the second outer surface 23, and the insulating film 21 is attached to the second outer surface. When the second cylinder 1321 pulls the connecting frame 1332, the connecting frame 1332 can drive the film folding plate 1331 to swing towards the direction away from the second outer surface 23, so that the film folding plate 1331 can release the extrusion on the insulating film 21, and the film pasting and folding operation on the battery module 200 is completed.

Fig. 7 is a schematic structural diagram of another direction of a film laminating apparatus 100 according to an embodiment of the present disclosure.

As shown in fig. 6 and 7, in some embodiments, the film pasting device 100 further includes a main body frame 140, the connection frame 1332 is hinged to the main body frame 140, and when the second pushing part 132 drives the connection frame 1332 to move, the connection frame 1332 drives the film folding plate 1331 to rotate around the hinged position of the connection frame 1332 and the main body frame 140.

The main body frame 140 may be used as a general support for the film sticking device 100, other components are mounted on the main body frame 140 or supported by the main body frame 140, one end of the connecting frame 1332 is connected to the second cylinder 1321, and the other end is hinged to the main body frame 140, and when the second cylinder 1321 drives the connecting frame 1332 to move, the connecting frame 1332 may rotate around the hinged position with the main body frame 140. The folding plate 1331 is rotated around the hinge position of the connecting frame 1332 and the main body frame 140 as a fulcrum, so that the folding plate 1331 swings, and the folding plate 1331 can fold the insulating film 21.

In some embodiments, the connecting frame 1332 is connected to the main body frame 140 by a pin 1333, the main body frame 140 is provided with a strip-shaped groove 141, and the pin 1333 passes through the strip-shaped groove 141 and can slide in the strip-shaped groove 141. Set up bar groove 141 on main body frame 140, can make round pin axle 1333 slide in bar groove 141 to can adjust the shift position of a membrane portion 133, prevent that membrane portion 133 from dying at the wobbling in-process card, improve the flexibility of a membrane operation.

In some embodiments, the membrane folding plate 1331 includes a flexible sheet 13311 that is elastically deformed by a force, and the flexible sheet 13311 presses the insulating membrane 21 under the driving of the first pushing part 131 and the second pushing part 132. When the thin flexible sheet 13311 presses the insulating film 21, the thin flexible sheet 13311 may be elastically deformed by the pressing force to be bent.

Fig. 8 is a schematic diagram of the film folding operation performed by the film folding mechanism 130 according to the embodiment of the present application.

As shown in fig. 7 and 8, when the film folding mechanism 130 folds the insulating film 21, the first cylinder 1311 drives the supporting frame 1312 to move in a direction perpendicular to the first outer surface 22 (the same as the height direction Z of the battery module), and the supporting frame 1312 drives the second pushing portion 132 and the film folding portion 133 to move together, so that the film folding portion 133 can reach the film sticking portion 221. The second cylinder 1321 of the second pushing portion 132 may first pull the connecting frame 1332 of the membrane folding portion 133, that is, pull the connecting frame 1332 in a direction opposite to the arrow direction in fig. 8, so that the membrane folding plate 1331 swings in a direction away from the battery module 200, when the flexible sheet 13311 is separated from the first outer surface 22 of the battery module 200 with the driving of the second cylinder 1321, the pressing force applied to the flexible sheet 13311 is released, the elastic deformation of the flexible sheet 13311 is recovered, the insulating film 21 is folded in a direction of the second outer surface 23, and when the second cylinder 1321 drives 13311 to swing in a direction toward the second outer surface 23 of the battery module 200, that is, the second cylinder 1321 pushes the connecting frame 1332 in the arrow direction in fig. 8, so that the flexible sheet 13311 presses the folded insulating film 21 against the second outer surface 23.

Fig. 9 is a schematic structural diagram of another direction of the film folding device 100 according to the embodiment of the present application.

As shown in fig. 9, in some embodiments, the film pasting mechanism 120 includes a first moving part 121, a second moving part 122 and at least one film pressing roller 123, the first moving part 121 can drive the film pressing roller 123 to move above the film pasting part 221 to press the insulating film 21 onto the film pasting part 221, and the second moving part 122 can drive the film pressing roller 123 to roll along the film pasting part 221. The squeeze roller 123 is driven by the first and second moving

portions

121 and 122, and the squeeze roller 123 can be reciprocated in the cell module height direction Z and the cell module width direction Y, thereby completely attaching the insulating film 21 to the film attaching portion 221.

When the film sticking mechanism 120 performs the film sticking operation, the film pressing roller 123 is driven by the first moving part 121 to move in the direction toward the insulating film 21, the direction toward the insulating film 21 is the same as the direction perpendicular to the first outer surface 22 until the film pressing roller 123 presses the insulating film 21 against the film sticking portion 221, the insulating film 21 is stuck to the film sticking portion 221, and the film pressing roller 123 is driven by the second moving part 122 to roll in the direction in which the film sticking portion 221 extends, and in the battery module 200 in the embodiment shown in fig. 4, the direction in which the film sticking portion 221 extends is the battery module width direction Y, so that the insulating film 21 can be completely stuck to the film sticking portion 221 in the battery module width direction Y.

Fig. 10 is a front view of the film folding device 100 according to the embodiment of the present application.

As shown in fig. 10, in some embodiments, the laminating mechanism 120 includes two lamination rollers 123, and the two lamination rollers 123 are juxtaposed.

The squeeze rollers 123 are independent of each other, and each squeeze roller 123 is driven by the first moving part 121 and the second moving part 122 connected thereto.

Fig. 11 to 14 are schematic diagrams illustrating a process of the film laminating operation performed by the film laminating mechanism 120, and fig. 11 is a schematic diagram illustrating a film laminating roller 123 descending (moving downward in the height direction Z of the battery module) when the film laminating mechanism 120 performs the film laminating operation; fig. 12 is a schematic view of the lowered lamination roller 123 of fig. 11 moving toward another lamination roller 123; fig. 13 is a schematic view of the lower squeeze roller 123 of fig. 12 reaching the other squeeze roller 123 and moving in the opposite direction; fig. 14 is a schematic view in which another squeeze roller 123 descends after the descending squeeze roller 123 moves to the home position.

Referring to fig. 11 and 12, in the film laminating operation, one of the lamination rollers 123 is pressed down by the first moving part 121 until the insulation film 21 is pressed to the film laminating part 221. Referring to fig. 13, after the second moving portion 122 drives the squeeze roller 123 to roll under another squeeze roller 123, the squeeze roller 123 is driven to move in the opposite direction to the home position. After moving the lowered lamination rollers 123 to the pressure drop original position, the other lamination roller is pressed down to the lamination position 221 by the first moving part 121, at this time, as shown in fig. 14, the two lamination rollers 123 press the insulation film 21 to the lamination position 221 in parallel, and then the two lamination rollers 123 roll to both sides respectively, so that the insulation film 21 is completely laminated to the lamination position 221 along the width direction Y of the battery module, thereby completing the lamination operation of the first outer surface 22.

Set up two squeeze film rollers 123, press down and move to another squeeze film roller 123 below with a squeeze film roller 123 earlier, can roll pressfitting insulating film 21 to the pad pasting position 221 with two squeeze film rollers 123 clearance between the roller 123 again to both sides simultaneously, improve work efficiency.

In some embodiments, the first outer surface 22 is a bottom surface of the battery module 200. The bottom surface of the battery module 200 is the outer surface of the bottom plate 201 away from the battery cell 20, and the film attachment portion 221 is the position where the bottom surface is adjacent to the side plate 202. When the film attaching operation is performed, the film attaching mechanism 120 attaches the insulating film 21 to the film attaching portion 221 located on the bottom surface, and the film folding mechanism 130 folds and attaches the insulating film 21 to the outer surface, away from the battery cell 20, of the side plate 202 adjacent to the film attaching portion 221, so that the film attaching and folding operation of the battery module 200 is completed.

In the above technical solution, the insulating film can be attached to the corner position of the battery module 200 by first attaching the film on the bottom surface and then folding the insulating film in the direction of the side plate 202, so as to avoid the problem that the insulating film 21 cannot be attached to the side plate on the side of the end plate 203 due to interference of the end plate 203, reduce the problem that the blue film is leaked from the individual part of the battery module 200, and reduce the risk of short circuit of the battery module 200.

Fig. 15 is a schematic structural diagram of a film sticking system 1000 according to an embodiment of the present disclosure; fig. 16 is a front view of the film attachment system 1000 of fig. 15.

As shown in fig. 15 and 16, the present application provides a film attaching system 1000 for attaching an insulating film 21 to a battery module 200, the film attaching system 1000 including: a film supply device 300, a film drawing and cutting device 400 and a film sticking device 100. The film supply device 300 is used for supplying the insulating film material 211, the film drawing and cutting device 400 is used for drawing out the insulating film material 211 and cutting the insulating film material 211 to form the insulating film 21, and the film sticking device 100 is used for sticking the insulating film 21 to the battery module 200.

The film sticking apparatus 100 includes: a film taking mechanism 110, a film pasting mechanism 120 and a film folding mechanism 130. The film taking mechanism 110 is used for clamping the insulating film 21 and moving the insulating film 21 to a position corresponding to a film attaching part 221 on the first outer surface 22 of the battery module 200, the film attaching mechanism 120 is used for attaching the insulating film 21 to the film attaching part 221, and the film folding mechanism 130 is used for folding the insulating film 21 from the film attaching part 221 to a second outer surface 23 perpendicular to the first outer surface 22 and pressing the insulating film to the second outer surface 23.

Referring to fig. 15, in some embodiments, the film supplying device 300 and the film drawing and cutting device 400 of the film pasting system 1000 are two groups arranged in parallel, after the insulating film material 211 on one group of the film supplying device 300 is used up, the other group of the film supplying device 300 and the film drawing and cutting device 400 automatically complete the film supplying operation, and the cut insulating film 21 is conveyed to the film pasting device 100, so that the time for replacing the insulating film material 211 is saved, and the operation efficiency of the film pasting system 1000 is improved.

The application of pad pasting system 1000, can provide insulating film material 221 and pull out and tailor to insulating film 21 through drawing membrane cutting device 400 for membrane supply device 300, rethread pad pasting device 100 get membrane mechanism 110 will draw membrane cutting device 400 to cut the insulating film 21 of cutting out and press from both sides automatically and get and move to the pad pasting position 221 top of battery module 200, and through pad pasting mechanism 120 with roll over membrane mechanism 130 on attaching insulating film 21 to battery module 200 automatically, need not manual operation, improve pad pasting quality and work efficiency.

With continued reference to fig. 15 and 16, in some embodiments, the film pasting system 1000 further includes a positioning and overturning device 500 that overturns the externally conveyed battery module 200 such that the first outer surface 22 faces the film pasting mechanism 120 and fixes the battery module 200 in a fixed position.

Since the battery module 200 is in an upright state after the assembly is completed, that is, the bottom plate 201 is located below the height direction Z of the battery module, when the external device transfers the battery module 200 to the film attaching mechanism, the battery module 200 is turned over in order to attach the film to the bottom plate 201, so that the bottom plate 201 of the battery module 200 is located above the height direction Z of the battery module.

In some embodiments, the positioning and overturning device 500 includes a clamping jaw 510 and an overturning mechanism 520, and when the external device transfers the battery module to the film laminating system 1000, the positioning and overturning device 500 clamps the battery module 200 through the clamping jaw 510, and then overturns the clamping jaw 510 together with the battery module 200 by 180 ° by using the overturning mechanism 520, so that the bottom surface of the battery module 200 faces the film laminating mechanism 120. Of course, the turnover mechanism 520 is not limited to 180 ° when the clamping jaw 510 together with the battery module 200 is turned over, and may be turned over by 90 ° or 270 ° when the film attaching operation is required to be performed on the outer surface of the battery side plate 202 first.

The film pasting system 1000 of the application, after attaching insulating film 21 to the predetermined position through film pasting mechanism 120, recycle and roll over film mechanism 130 and turn over insulating film 21 and paste tightly, can carry out the pad pasting operation to the position that parts such as end plate 103 interfere, realize battery module 200's complete insulation to the problem of the bounce-back upwarp of artifical pad pasting has been avoided, has improved pad pasting quality and pad pasting efficiency.

Fig. 17 is a flowchart of a film pasting method according to an embodiment of the present application.

As shown in fig. 17, the present application provides a film attaching method for attaching an insulating film 21 to a battery module 200, the method comprising the steps of:

in step S1, an insulating film material 211 is provided.

In step S2, the provided insulating film material 211 is pulled out and cut to form the insulating film 21.

Step S3 of attaching the insulating film 21 to the battery module 200; wherein the insulating film 21 is gripped and the insulating film 21 is moved to a position corresponding to the film attaching part 221 located on the first outer surface 22 of the battery module 200; bonding the insulating film 21 to the film-bonding portion 221; the insulating film 21 is folded from the film attaching part 221 toward the second outer surface 23 perpendicular to the first outer surface 22 and is pressed on the second outer surface 23.

Fig. 18 is a flowchart illustrating the process of attaching the insulating film 21 to the film attaching portion 221 according to some embodiments of the present disclosure.

In some embodiments, in step S3, the step of attaching the insulating film 21 to the film attaching portion 221 includes:

in step S31, two squeeze rollers 123 are provided such that the two squeeze rollers 123 are juxtaposed.

In step S32, the two squeeze rollers 123 are moved to above the center position of the laminating part 221, and the two squeeze rollers 123 are brought into contact, and the distance between the two squeeze rollers 123 and the insulating film 21 is equal to or greater than the diameter of the squeeze rollers 123.

In step S33, one of the lamination rollers 123 is pressed down to press the insulating film 21 to the lamination portion 221.

Step S34 is to roll the pressed lamination roller 123 by a distance corresponding to the diameter of one lamination roller 123 toward the other lamination roller 123, and then to roll the pressed lamination roller 123 by a distance corresponding to the diameter of one lamination roller 123 in the opposite direction.

Step S35, pressing down the other film pressing roller 123 to the film adhering part 221; the two squeeze rollers 123 are rolled in directions away from each other to completely bond the insulating film 21 to the film bonding portion 221.

In some embodiments, folding the insulation film 21 from the film attaching part 221 to the second outer surface 23 perpendicular to the first outer surface 22 and pressing the insulation film to the second outer surface 22 includes:

step S36, arranging a membrane folding plate 1331, wherein the membrane folding plate 1331 comprises a soft thin plate 13311 which can generate elastic deformation under stress;

step S37, moving the film folding plate 1331 in a direction perpendicular to the first outer surface 22, and contacting the insulating film 21 of the film sticking portion 221 to elastically deform the flexible sheet;

step S38 of folding the insulating film 21 toward the second outer surface 22 by swinging the film folding plate 1331 toward the second outer surface 22;

in step S39, the soft sheet 13311 is pressed against the insulating film 21 to press the insulating film 21 to the second outer surface 22.

In some embodiments, before the insulating film 21 is attached to the battery module 200, a step of positioning and turning over the battery module 200 is further included, the externally transferred battery module 200 is turned over so that the first outer surface 22 faces the insulating film 21, and the battery module 200 is fixed at a fixed position.

According to the film sticking method, after the insulating film 21 is attached to the preset position, the insulating film 21 is turned over and tightly stuck, film sticking operation can be performed on positions where components such as the end plate 103 interfere, complete insulation of the battery module 200 is achieved, the problem that the manual film sticking is rebounded and warped is avoided, and the film sticking quality and the film sticking efficiency are improved.

The above description is only a preferred embodiment of the present application and is not intended to limit the present application, and various modifications and changes may be made to the present application by those skilled in the art. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A film laminating apparatus for laminating an insulating film to a battery module, comprising:

the film taking mechanism is used for clamping the insulating film and moving the insulating film to a position corresponding to a film pasting part on the first outer surface of the battery module;

a film sticking mechanism for sticking the insulating film to the film sticking part;

and the film folding mechanism is used for folding the insulating film from the film pasting part to a second outer surface vertical to the first outer surface and pressing the insulating film on the second outer surface.

2. The film laminating device according to claim 1, wherein the film folding mechanism includes a first pushing portion, a second pushing portion, and a film folding portion, the first pushing portion can drive the second pushing portion and the film folding portion to move in a direction perpendicular to the first outer surface, and the second pushing portion can drive the film folding portion to laminate the insulating film to the second outer surface.

3. The film sticking device as claimed in claim 2, wherein the film folding portion comprises a film folding plate and a connecting frame, the film folding plate is fixedly connected to the connecting frame, and one end of the connecting frame, which is far away from the film folding plate, is connected with the second pushing portion.

4. The film pasting device as claimed in claim 3, further comprising a main body frame, wherein the connecting frame is hinged to the main body frame, and when the second pushing portion drives the connecting frame to move, the connecting frame drives the film folding plate to rotate around a hinged position of the connecting frame and the main body frame.

5. The film sticking device according to claim 4, wherein the connecting frame is connected with the main body frame through a pin shaft, the main body frame is provided with a strip-shaped groove, and the pin shaft penetrates through the strip-shaped groove and can slide in the strip-shaped groove.

6. The film sticking device according to claim 4, wherein the film folding plate comprises a flexible sheet which can be elastically deformed by force, and the flexible sheet presses the insulating film under the driving of the first pushing part and the second pushing part.

7. A laminating device according to any one of claims 1-6, characterized in that the laminating mechanism comprises a first moving part, a second moving part and at least one laminating roller, the first moving part is capable of driving the laminating roller to move above the laminating part to laminate the insulating film to the laminating part, and the second moving part is capable of driving the laminating roller to roll along the laminating part.

8. The laminating device of claim 7, wherein said laminating mechanism comprises two of said lamination rollers, said lamination rollers being juxtaposed.

9. The film attachment device of any one of claims 1-6, wherein the first outer surface is a bottom surface of the battery module.

10. A film laminating system for laminating an insulating film to a battery module, comprising:

the film supply device is used for supplying an insulating film material;

the film drawing and cutting device is used for drawing the insulating film material out and cutting the insulating film material to form an insulating film;

a film attaching device for attaching the insulating film to the battery module;

wherein, the pad pasting device includes:

11. The film laminating system of claim 10, further comprising a positioning and inverting device that inverts the externally conveyed battery module with the first outer surface facing the film laminating mechanism and secures the battery module in a fixed position.

12. A film attaching method for attaching an insulating film to a battery module, comprising the steps of:

providing an insulating film material;

pulling out the provided insulating film material and cutting to form an insulating film;

attaching the insulating film to the battery module;

wherein the content of the first and second substances,

clamping the insulating film and moving the insulating film to a position corresponding to a film-attaching portion on a first outer surface of the battery module; attaching the insulating film to the film attaching portion; and folding the insulating film from the film pasting part to a second outer surface vertical to the first outer surface and pressing the insulating film on the second outer surface.

13. The film laminating method according to claim 12, wherein the laminating the insulating film to the film laminating portion includes:

arranging two film pressing rollers, and arranging the two film pressing rollers in parallel;

moving the two film pressing rollers to a position above the center of the film pasting part, and enabling the two film pressing rollers to be in contact with each other, wherein the distance between the two film pressing rollers and the insulating film is larger than or equal to the diameter of the film pressing rollers;

pressing one of the film pressing rollers downwards, pressing the insulating film to the film pasting part, and rolling the film pressing roller towards the other film pressing roller for the diameter distance of one film pressing roller and then rolling the film pressing roller for the diameter distance of one film pressing roller in the opposite direction;

pressing down the other film pressing roller to the film pasting part;

and rolling the two film pressing rollers towards the direction far away from the other film pressing roller respectively to completely attach the insulating film to the film attaching part.

14. The film laminating method according to claim 12 or 13, wherein said folding back and pressing the insulating film from the film laminating portion to a second outer surface perpendicular to the first outer surface and to the second outer surface comprises:

arranging a membrane folding plate, wherein the membrane folding plate comprises a flexible thin plate which can generate elastic deformation under stress;

moving the film folding plate to a direction vertical to the first outer surface, contacting the film folding plate with the insulating film at the film pasting part, and enabling the flexible thin plate to generate elastic deformation;

swinging the film folding plate towards the direction of the second outer surface, and folding the insulating film towards the second outer surface;

pressing the flexible sheet against the insulating film to press the insulating film to the second outer surface.

15. The film laminating method according to claim 14, further comprising a step of positioning and inverting the battery module before the insulating film is attached to the battery module, inverting the externally transferred battery module so that the first outer surface faces the direction of the insulating film, and fixing the battery module at a fixed position.