TW202008637A - Laminated battery and manufacturing method of laminated battery capable of improving the manufacturing efficiency and shortening the manufacturing time of a laminated battery - Google Patents

Abstract

The object of the present invention is to surely fix a bent portion of a protruding portion of a package body to a battery body, and to improve the manufacturing efficiency and shorten the manufacturing time of the laminated battery. To achieve the object, a laminated battery (200) of the present invention includes a battery body (6); and a package body (7) for packaging the battery body. The package body has protruding portions (8a, 8b) protruding from side surfaces (62, 63) of the battery body. The protruding portions has bent portions (9a, 9b) formed by bending. An ultraviolet curing adhesive (12) is applied between the bent portion and the side surface of the battery body. The bent portion and the battery body are fixed by curing the ultraviolet curing adhesive.

Description

Laminated battery and method for manufacturing laminated battery

The present invention relates to a laminated battery and a method of manufacturing a laminated battery, in particular, a laminated battery and a method of manufacturing a laminated battery using an ultraviolet curing adhesive.

In recent years, with the development of electronic devices, small-sized, light-weight, high-energy density, and repetitively charge and discharge laminated batteries have become mainstream.

In the previous laminated battery, a metal package is generally used to encapsulate the battery body. However, the metal package cannot achieve miniaturization and weight reduction. Therefore, a technology has been developed to replace the metal package with a thin film package to encapsulate the battery body.

As shown in FIG. 1A, as such a laminated battery 100, a packaging body 2 made of a thin film is generally used to encapsulate the battery body 1. The package 2 is usually formed by two films or two parts 2a, 2b formed by reversing a film, by using the two films or two parts 2a, 2b formed by reversing a film The battery body 1 is wrapped to form a package 2 that encapsulates the battery body 1. Thereby, the battery body 1 can be protected and the size of the laminated battery can be reduced.

When the laminated body 100 composed of the battery body 1 is packaged with the package body 2 made of a thin film, in order to prevent the electrolyte and the like in the battery body 1 from leaking out, and to prevent outside air or impurities from entering the package body 2 The two films 2a, 2b forming the package 2 protrude from the side surface of the battery body 1, and the protruding portions where the two films 2a, 2b overlap are fused to form the protruding portions 3a, 3b. Furthermore, in order to ensure the sealing of the package 2, the area of bonding is increased as much as possible.

However, as shown in FIG. 1B, when the laminate battery 100 is viewed from above, the excess area of the protruding portion 3 causes the laminate battery 100 to increase in size, which reduces the energy efficiency per unit volume.

In view of this, as shown in FIG. 2A, a part of the protruding portions 3a, 3b of the package 2 is generally bent to form bent portions 4a, 4b, and the bent portions 4a, 4b are adhered and attached to the battery body 1, thereby reducing the area of the laminated battery 100, and further reducing the overall volume of the laminated battery 100 in plan view.

However, since the package 2 is usually formed of a flexible film, as shown in FIG. 2B, the bent portions 4a and 4b cannot be fixed to the battery body 1 after being bent, which may result in left and right bent portions The bending angles of 4a and 4b are not uniform. Moreover, through repeated bending, the protruding portions 3a, 3b may become brittle, which may cause breakage of the bent portions 4a, 4b.

Therefore, Patent Document 1 proposes a technique for forming the package 2 with a hot-melt material, and the bent portions 4a, 4b of the protruding portions 3a, 3b are bent and fixed to the battery body 1 by a thermally tortuous manufacturing method. However, over time, the protrusions 3a, 3b formed by the hot-melt material may be deformed, so that the bent portions 4a, 4b cannot be fixed to the battery body 1.

Therefore, Patent Document 2 proposes a solution decision. As shown in FIG. 3A, first attach double-sided adhesive 5 to the protrusions 3a, 3b, and then, as shown in FIG. 3B, bend the protrusions 3a, 3b to form a bend. After the raised portions 4a and 4b, the bent portions 4a and 4b are fixed to the battery body 1 due to the viscosity of the adhesive 5 on both sides.

However, in the technology of Patent Document 2, the process of attaching the double-sided adhesive 5 needs to be performed manually in advance, which causes difficulty in manufacturing the laminated battery. Moreover, if the attachment position of the double-sided adhesive 5 is inaccurate, there may be a risk that it cannot be properly fixed between the bent portions 4a, 4b and the battery body 1. Moreover, in a laminated battery, if the attachment positions of the adhesives 5 on both sides are different, the angles of the bent portions 4a and 4b on the left and right sides will be different, and a laminated battery of the same specification cannot be manufactured. Moreover, once the double-sided adhesive 5 is attached to the bent portions 4a, 4b, it is difficult to completely remove the double-sided adhesive 5, if the attachment fails, the entire set of laminated batteries needs to be discarded, resulting in an increase in manufacturing costs. In addition, the process of attaching the double-sided adhesive 5 to the bent portions 4a and 4b with high precision requires much time and the manufacturing efficiency is extremely low. [Prior Technical Literature] [Patent Literature]

[Patent Document 1] JP 2014-179171 A 　　 [Patent Document 2] JP H11-67167 A

[Problems to be solved by the invention]

Therefore, an object of the present invention is to provide a laminated battery and a method of manufacturing the laminated battery, which can reliably fix the bent portion of the protruding portion of the package to the battery body, and improve the laminated battery Manufacturing efficiency and shorten manufacturing time, and reduce unnecessary engineering. [Technical means to solve the problem]

A laminated battery according to an embodiment of the present invention includes: a battery body; a package that encapsulates the battery body; wherein the package has a protrusion protruding from the side of the battery body; the protrusion has a warp A bent portion formed by bending; between the bent portion and the side surface of the battery body, an ultraviolet curing adhesive is applied; by curing the ultraviolet curing adhesive, the curved portion and the foregoing are cured The battery body is fixed.

In the laminated battery according to an embodiment of the present invention, the ultraviolet light-curing adhesive is completely coated between the bent portion and the side surface of the battery body.

In the laminated battery according to an embodiment of the present invention, the ultraviolet curing adhesive is applied in a dot shape between the bent portion and the side surface of the battery body.

In the laminated battery according to an embodiment of the present invention, the ultraviolet curing adhesive is coated with an "I" shape.

In the laminated battery according to an embodiment of the present invention, the dimension of the cured ultraviolet light-curing adhesive in the height direction is higher than the dimension of the bent portion in the height direction.

In the laminated battery according to an embodiment of the present invention, the dimension of the cured ultraviolet ray adhesive in the height direction is lower than the dimension of the bent portion in the height direction.

A laminated battery according to an embodiment of the present invention, wherein the bent portion has a second protrusion formed by bending the bent portion again, and a second protrusion formed by bending the second protrusion again 2Bend the part.

In the laminated battery according to an embodiment of the present invention, the protruding portion further includes a plurality of stepped protruding portions and bent portions.

A method for manufacturing a laminated battery according to an embodiment of the present invention includes the steps of forming a package that encapsulates a battery body and providing the package body with a protrusion protruding from the side of the battery body; applying ultraviolet light The process of hardening the adhesive; the process of bending the protruding part to form a bent part; the process of fixing the bent part and the battery body by hardening the ultraviolet light hardening adhesive.

In the method for manufacturing a laminated battery according to an embodiment of the present invention, in the process of applying the ultraviolet light-curing adhesive, the ultraviolet light-curing adhesive is completely coated.

In the method for manufacturing a laminated battery according to an embodiment of the present invention, in the process of applying the ultraviolet light-curing adhesive, the ultraviolet light-curing adhesive is applied in dots.

In the method for manufacturing a laminated battery according to an embodiment of the present invention, in the process of applying the ultraviolet light-curing adhesive, the ultraviolet light-curing adhesive is coated in an "I" shape.

In the method for manufacturing a laminated battery according to an embodiment of the present invention, the dimension of the cured ultraviolet ray adhesive in the height direction is higher than the dimension of the bent portion in the height direction.

In the method for manufacturing a laminated battery according to an embodiment of the present invention, the dimension of the cured ultraviolet ray adhesive in the height direction is lower than the dimension of the bent portion in the height direction.

A method for manufacturing a laminated battery according to an embodiment of the present invention further includes: bending the bent portion to form a second protrusion, and bending the second protrusion to form a second bend Part of the project.

In the method for manufacturing a laminated battery according to an embodiment of the present invention, the protruding portion further includes a plurality of stepped protruding portions and bent portions.

An electronic device according to an embodiment of the present invention includes the laminated battery described in the aforementioned embodiment or the laminated battery formed by the method for manufacturing the laminated battery described in the aforementioned embodiment. [Compare the efficacy of the prior art]

According to the present invention, it is possible to provide a laminated battery and a method of manufacturing the laminated battery, which can reliably fix the bent portion of the protruding portion of the package to the battery body and improve the manufacturing efficiency of the laminated battery And shorten the manufacturing time.

[Laminated battery]

In the following description, embodiments of the present invention will be described with reference to the drawings. In the drawings, the same symbols are added to the same parts and the description is omitted. In addition, the content in each drawing is only an illustration of the present invention and is not intended to limit the present invention.

As shown in FIG. 4A, the laminated battery 200 according to the embodiment of the present invention includes a battery body 6, a package 7 that encapsulates the battery body 6, a positive terminal 10, and a negative terminal 11. In the following description, although the battery body 6 will be encapsulated by the package body 7, for convenience of explanation, unless otherwise specified, the entire battery body 6 covered by the package body 7 will be referred to as "battery body 6" Situation.

The battery body 6 is, for example, a non-aqueous electrolyte rechargeable battery. Such a rechargeable battery includes, for example, a positive electrode active material (lithium cobalt oxide such as LiCoO ₂ and the like, lithium manganese oxide such as LiMn ₂ O ₄ , and LiNiO ₂ that can absorb and release lithium ions. Lithium composite oxides such as lithium nickel oxide, etc.) and a positive electrode mixture containing a conductive auxiliary agent, a binder, etc. are applied to a positive electrode current collector formed of aluminum foil and dried, and the positive electrode formed by drying A negative electrode active material (graphite, pyrolytic carbon, coke, glassy carbon, metal, metal oxide, etc.) that absorbs/releases lithium ions and a negative electrode mixture containing a conductive agent, a binder, etc. are applied to a negative electrode formed of aluminum foil, etc. A lithium rechargeable battery with a negative electrode, a separator, and a non-aqueous electrolyte formed on the current collector and dried, but not limited to this.

As the film forming the package 7, for example, a thermally fusible resin layer such as an ionic polymer is provided on the innermost layer, and the thermally fusible resin layer is covered with a thin metal foil such as aluminum. Finally, the outermost layer is formed to protect the metal foil from A composite film (laminated film) formed of resin layers such as polyethylene terephthalate and nylon, which are physically impacted, but not limited to this. The package 7 is generally formed by covering the battery body 6 with two films. Alternatively, it may be formed in such a manner that a sheet of film is folded back to cover the battery body 6.

The battery body 6 has four side surfaces on its sides, a top surface on its top, and a bottom surface on its bottom. As shown in FIG. 4A, the surface of the battery body 6 facing the +X direction is the front side surface 61, the surface facing the -Y direction is the left side surface 62, the surface facing the +Y direction is the right side surface 63, and the surface is facing the -X direction The surface of is the rear side 64, the surface facing the +Z direction is the top surface 65, and the surface facing the -Z direction is the bottom surface 66. In the following description, the left side surface 62 and the right side surface 63 may be collectively referred to as "both side surfaces 62, 63".

As shown in FIG. 4A, the positive terminal 10 and the negative terminal 11 extend from the front side 61 of the battery body 6. However, the positive electrode terminal 10 and the negative electrode terminal 11 are not limited to extend from the front side surface 61 of the battery body 6, and may extend from the rear side surface 64 of the battery body 6. In addition, the positive electrode terminal 10 and the negative electrode terminal 11 generally extend from the bonding position of the two films forming the package 7, but it is not limited to this, and extends from any position on the side of the battery body 6 through the package 7 can. In addition, in the laminated battery 200 shown in FIG. 4A, the battery body 6, the bent portions 9 a and 9 b of the protrusions 8 a and 8 b are fixed by the ultraviolet light curing adhesive 12.

4B and 4C are views of the laminated battery 200 from the rear side 64 of the battery body 6. As shown in FIG. 4B, the package 7 has two protrusions 8 a and 8 b protruding from the left side 62 and the right side 63 of the battery body 6 on the bottom surface 66 of the battery body 6.

Next, as shown in FIG. 4C, the two protruding portions 8a, 8b of the package 7 respectively have bent portions 9a, 9b formed by being bent at a certain angle. In addition, as shown in FIG. 4D, the angle of the bending is not limited to 90 degrees (that is, parallel to the two sides 62 and 63 of the battery body 6 ), and those of ordinary skill in the art can freely set it according to needs. In addition, those of ordinary skill in the art can freely set the length of the bent portions 9a and 9b (the size from the bent position to the front end of the protruding portion) according to needs.

As shown in FIG. 4E, as a modification, the bent portions 9a and 9b may be bent again to form second protrusions 81a and 81b, and the second protrusions 81a and 81b may be bent again to form a second bend Starting parts 91a, 91b. Thereby, stepped protrusions and bent portions can be formed. By repeating the above bending operation, a plurality of stepped bending portions can be formed, and those of ordinary skill in the art can freely set according to needs.

As shown in FIG. 5A, the ultraviolet curing adhesive 12 may be applied to the protrusions 8a, 8b before bending the protrusions 8a, 8b. The ultraviolet curing adhesive 12 may be applied to the entire surface of the protruding portions 8a, 8b, or may be applied only to the portions of the protruding portions 8a, 8b where the bent portions 9a, 9b are to be formed. In addition, it may be applied to the convex portions 8a, 8b other than the portions where the bent portions 9a, 9b are to be formed. In addition, as shown in FIG. 5B, after bending the protruding portions 8a, 8b to form the bent portions 9a, 9b, the ultraviolet curing adhesive 12 is applied to the bent portions 9a, 9b and the left side of the battery body 6, respectively The space enclosed between the surface 62 and the right side surface 63 may be sufficient. In addition, the timing of application of the ultraviolet light-curing adhesive 12 is not particularly limited.

In addition, as for the coating method of the ultraviolet light-curing adhesive 12, as shown in FIG. 6A, the ultraviolet light-curing adhesive 12 is applied all over to ensure the stability of the fixed bent portions 9a and 9b and the battery body 6. Moreover, as shown in FIG. 6B, applying the ultraviolet light-curing adhesive 12 at dot-shaped intervals can save the ultraviolet light-curing adhesive 12 while ensuring the fixation between the bent portions 9a, 9b and the battery body 6 Usage. Next, as shown in FIG. 6C, applying the UV-curable adhesive 12 in an "I" shape can ensure the fixation of the bent portions 9a, 9b and the battery body 6 at the edge position, and save other parts that are not easy to fall off The amount of UV curing adhesive 12 used. However, the above coating methods of the ultraviolet curing adhesive 12 are only examples, and those of ordinary skill in the art can freely change the coating method of the ultraviolet curing adhesive 12 according to needs.

Because the UV-curable adhesive has good stability and can be cured by irradiation with ultraviolet light, when the coating position is wrong or the coating amount is too large, the UV-curable adhesive can be easily removed and reapplied as It is more suitable to fix the bent portions 9a, 9b and the battery body 6.

As the material of the ultraviolet light hardening adhesive, it is generally possible to use an adhesive that has a light hardening function, and also has a water hardening function. For example, it may be a common composition composed of a polyurethane prepolymer, a reactive diluent, a photoinitiator, a leveling agent, a polymerization inhibitor, a silane coupling agent, or the like, or a composition composed of at least three of the above, for example, it may be used DYMAX's 9481-E, 9482, 9101, 9103, POLYTE's UV2137DC, UV2322DC, UV257DC, DELO's AD491, GE4919, but not limited to this.

After making the bent portions 9a, 9b at a certain angle, and applying the ultraviolet light curing adhesive 12 between the bent portions 9a, 9b and the two side surfaces 62, 63 of the battery body 6, the ultraviolet light is hardened and adhered The agent 12 is hardened, so that the bent portions 9 a, 9 b are fixed to the battery body 6 to form the laminated battery 200. Here, the so-called "fixing the bent portion to the battery body" means that the bent portions 9a, 9b are sandwiched between the two side surfaces 62, 63 covering the battery body 6 by the ultraviolet curing adhesive 12. The package 7 is fixed to the battery body 6, so the bent portions 9a, 9b are not "directly" fixed to the two sides 62, 63 of the battery body 6, the bent portions 9a, 9b and the two sides 62, 63 of the battery body 6 It doesn't matter if there are other things in between.

As a method of hardening the ultraviolet light curing adhesive 12, there is a method of irradiating ultraviolet light to harden the ultraviolet light curing adhesive. As an ultraviolet light source, there is a person who irradiates light with a wavelength of 400 nm at an intensity of 600 mW/cm ² , but it is not limited to this. Those of ordinary skill in the art can freely change the irradiation wavelength, intensity, and irradiation time according to the type of the ultraviolet light-curing adhesive 12.

In addition, as shown in FIG. 7A, when the bent portions 9a, 9b are fixed to the battery body 6, the height dimension of the hardened ultraviolet-curable adhesive 12 may be higher than the height dimension of the bent portions 9a, 9b It may be the same height as the height dimension of the bent portions 9a and 9b. Alternatively, as shown in FIG. 7B, the height dimension of the cured ultraviolet light-curing adhesive 12 may be lower than the height dimension of the bent portions 9a and 9b, and those of ordinary skill in the art may freely set according to needs .

As shown in FIG. 7A, when the height dimension of the cured ultraviolet light-curing adhesive 12 is higher than (including equal to) the height dimension of the bent portions 9a and 9b, both side surfaces 62 of the laminated battery 200 can be prevented When 63 collides with other objects, the end of the battery body 6 (part R in FIG. 7A) is damaged. In addition, as shown in FIG. 7B, when the height dimension of the cured ultraviolet light curing adhesive 12 is lower than the height dimension of the bent portions 9a and 9b, the amount of the ultraviolet light curing adhesive 12 can be saved.

According to the laminate battery 200 of the present embodiment, the compact battery can be reduced in size. The ultraviolet light-curing adhesive 12 can also be a protective layer when both sides 62 and 63 of the laminated battery 200 are impacted, and can protect the battery body 6 from damage.

Furthermore, compared to the prior art technique of fixing by manually attaching double-sided adhesives, the application of the ultraviolet light-curing adhesive 12 of this embodiment can be performed through automated engineering (described later), which reduces the manufacturing time and reduces the manufacturing layer The construction of the assembled battery 200 is complicated. Moreover, the ultraviolet light-curing adhesive 12 has good fixability, and can prevent the bending angles of the left and right bent portions 9a and 9b from changing. Furthermore, by fixing the bent portions 9a, 9b and the battery body 6 by the ultraviolet light-curing adhesive 12, the bent portions 9a, 9b can be prevented from being brittle by repeated bending. Furthermore, since the UV-curable adhesive 12 before curing can be easily removed, even if the coating position of the UV-curable adhesive 12 is wrong, the UV-curable adhesive 12 can be easily removed and re-applied. The entire set of laminated battery 200 needs to be discarded, which can save manufacturing costs. [Manufacturing method of laminated battery]

Next, a method of manufacturing the laminated battery of this embodiment will be described.

As shown in FIG. 8A, a manufacturing apparatus 300 of a laminated battery 200 includes: a stage 31 for mounting a package 7 in which the battery body 6 is packaged; and bending portions 8a and 8b of the package 7 are formed by bending The jigs 40a, 40b of the bent portions 9a, 9b, the coaters 50a, 50b that apply the ultraviolet light curing adhesive 12, and the light source 60. However, the configuration of the manufacturing apparatus 300 is only an example, and those of ordinary skill in the art can change its configuration or configuration according to its needs.

FIG. 9 is a flowchart of the method for manufacturing the laminated battery 200 of this embodiment. Hereinafter, a method of manufacturing the laminated battery 200 of this embodiment will be described with reference to FIGS. 8 and 9.

First, as shown in FIG. 8A, the package body 7 that encapsulates the battery body 6 is formed, and the package body 7 has protrusions 8 a, 8 b protruding from both side surfaces 62, 63 of the battery body 6 on the bottom surface 66 of the battery body 6 (S901).

Next, as shown in FIG. 8B, the ultraviolet curing adhesive 12 is applied to the protruding portions 8a, 8b by the coaters 50a, 50b (S902). Among them, a coating machine 50 may be used to apply the ultraviolet curing adhesive 12 on top of the protruding portion 8a first, and then move on to apply the ultraviolet curing adhesive 12 on the protruding portion 8b.

Next, as shown in FIG. 8C, the protrusions 8a, 8b of the package 7 are bent at a certain angle using jigs 40a, 40b to form bent portions 9a, 9b (S903). However, although FIG. 8B illustrates a case where the bending angle is 90 degrees, it is not limited to this. At this time, the jigs 40a, 40b will continue to bend the raised portions 9a, 9b, and proceed to the next step.

In addition, the order of the process of applying the ultraviolet light-curing adhesive (FIG. 8B, S902) and the process of bending the protrusion to form a bent portion (FIG. 8C, S903) can be interchanged.

Finally, as shown in FIG. 8D, the ultraviolet light 600 is irradiated by the light source 60 to harden the ultraviolet light curing adhesive 12, so that the bent portions 9a and 9b are fixed to the battery body 6 (S904). Among them, those of ordinary skill in the technical field can freely change the irradiation wavelength, intensity, and irradiation time of the light source 60 according to the type of the ultraviolet light-curing adhesive 12.

According to the manufacturing method of the laminated battery of the present embodiment, it is possible to manufacture the compact and lightweight laminated battery 200. Compared with the prior art technique of manually attaching double-sided adhesive to fix, the manufacturing method of the laminated battery 200 of the present embodiment can automatically apply/harden the ultraviolet curing adhesive 12 to reduce the manufacturing of the laminated type It takes time for the battery 200 and prevents the complication of the process of manufacturing the laminated battery. In addition, compared to the protrusions formed by using a hot-melt material in the prior art, the method of manufacturing the laminated battery 200 of the present embodiment can be performed at normal temperature, and the battery body can be prevented from being heated.

The laminated battery 200 of the present invention can be used in various electronic devices. The electronic device may be, for example, a personal computer, a notebook computer, a tablet computer, a mobile phone, a smart phone, a camera, etc., and its application is not limited. [Comparison of Examples and Prior Art]

Next, the laminated battery manufactured by the manufacturing method of the laminated battery of the present invention was compared with the comparative example of the prior art, and the results are shown in [Table 1].

[Example 1]: Use GE4919 type ultraviolet curing adhesive of DELO company, apply it between the bent part of the laminated battery of the present invention and the side of the battery body, and apply ultraviolet light (400nm, 600mW/ cm ² ) Irradiate for 4 seconds to fix the bent part to the battery body.

[Example 2]: After using the UV curing adhesive of the model AD491 of DELO Co., it is coated between the bent part of the laminated battery of the present invention and the side surface of the battery body, with ultraviolet light (400nm, 600mW/ cm ² ) Irradiate for 4 seconds to fix the bent part to the battery body.

[Comparative Example 1]: Instead of using ultraviolet light-curing adhesive, use two-sided adhesive to manually cut it to the size of the ultraviolet light-curing adhesive coating of the above Example 1 and Example 2 and attach it to the same position. The starting part is attached to the battery body to fix it.

[Comparative Example 2]: Only the bent portion was bent without using any adhesive material.

[Table 1]

Among them, the "amount of change in width (%)" in [Table 1] refers to the amount of change in the battery width (battery size in the Y direction) after one week has passed since the manufacture of the laminated battery. Specifically, it is calculated by a calculation formula of 100*(battery size in Y direction after one week after manufacturing-battery size in Y direction after manufacturing)/battery size (%) in Y direction after manufacturing. It can be found from the above [Table 1] that in Comparative Example 2 without using any adhesive material, the width of the battery greatly changed after one week, that is, the bent portion could not be fixed to the battery body. In Comparative Example 1, which uses double-sided adhesive, although the bent part can be fixed to the battery body, after a week, the battery width will be slightly changed, and its stability cannot be ensured. On the other hand, in the laminated batteries of Examples 1 and 2 of the present invention, after one week, the battery width will not change at all. Therefore, the laminated battery of the present invention can reliably fix the bent portion to the battery body.

Regarding the manufacturing time, since Embodiment 1 and Embodiment 2 of the present invention can be performed using automated engineering, the manufacturing can be completed in about 30 seconds on average. In contrast, in Comparative Example 1, since it is necessary to manually attach the double-sided adhesive, the average manufacturing time requires 153 seconds. Therefore, the method for manufacturing the laminated battery of the present invention can greatly reduce the manufacturing time.

In the above description, the present invention has been described with a preferred embodiment, but this embodiment is merely an example, and the technical scope of the present invention will be determined by the description of the patent application scope and its equivalent scope.

100‧‧‧Laminated battery 1‧‧‧Battery body 2‧‧‧Package body 3‧‧‧Protrusion 4‧‧‧Bent part 5‧‧‧Double-sided adhesive 6‧‧‧Battery body 7‧‧‧ Package 8‧‧‧Projection 9‧‧‧Bent part 200‧‧‧Laminated battery 61‧‧‧Front side 62‧‧‧Left side 63‧‧‧Right side 64‧‧‧Rear side 65‧ ‧‧Top surface 66‧‧‧Bottom surface 10‧‧‧Positive terminal 11‧‧‧Negative terminal 12‧‧‧Ultraviolet light curing adhesive 81‧‧‧Second protruding part 91‧‧‧Second bending part 300‧ ‧‧Manufacturing device 31‧‧‧Carrier 40‧‧‧Clamp 50‧‧‧Coating machine 60‧‧‧Light source 600‧‧‧Ultraviolet light

[FIG. 1] FIG. 1A is a front view showing a previous laminate battery. FIG. 1B is a plan view showing a previous laminate battery. [FIG. 2] FIGS. 2A and 2B are front views showing bent portions of the previous laminated battery. [FIG. 3] FIGS. 3A and 3B are front views showing that the two-sided adhesive is attached to the former laminated battery to fix the bent portion. [FIG. 4] FIG. 4A is a perspective view showing the laminated battery of the present invention. 4B to E are front views showing various changes of the protruding portion and the bent portion of the laminated battery of the present invention. [FIG. 5] FIG. 5A is a front view showing the projection of the laminated battery of the present invention coated with an ultraviolet curing adhesive. FIG. 5B is a front view of the ultraviolet curing adhesive applied between the bent portion of the laminated battery of the present invention and the side surface of the battery body. [FIG. 6] FIGS. 6A to 6C are plan views showing that the laminated battery of the present invention is coated with an ultraviolet curing adhesive in various ways. 7 [FIG. 7] FIGS. 7A and 7B are front views showing the height of the cured ultraviolet light-curing adhesive of the laminated battery of the present invention. [FIG. 8] FIGS. 8A to 8D are diagrams showing a manufacturing apparatus for manufacturing the laminated battery of the present invention. [FIG. 9] FIG. 9 is a flowchart showing the method for manufacturing the laminated battery of the present invention.

6‧‧‧Battery body

7‧‧‧Package

8a, 8b ‧‧‧ protrusion

9a, 9b‧‧‧Bent part

10‧‧‧Positive terminal

11‧‧‧Negative terminal

12‧‧‧UV hardening adhesive

61‧‧‧Front side

62‧‧‧Left side

63‧‧‧right side

64‧‧‧back side

65‧‧‧Top

66‧‧‧Bottom

81a, 81b ‧‧‧ 2nd protrusion

91a, 91b‧‧‧The second curved part

200‧‧‧Laminated battery

Claims (17)

A laminated battery, comprising: 　　 battery body; 　　 package body encapsulating the battery body; 　　 wherein 　　 the package body has a protrusion protruding from the side of the battery body; 　　 the protrusion has a bend formed by bending The raised portion; 　　 Between the curved portion and the side surface of the battery body is coated with an ultraviolet curing adhesive; 　　 By curing the ultraviolet curing adhesive, the curved portion is fixed to the battery body. The laminate battery according to claim 1, wherein the ultraviolet light-curing adhesive is applied entirely between the bent portion and the side surface of the battery body. The laminated battery according to claim 1, wherein the ultraviolet light-curing adhesive is applied in dots between the bent portion and the side surface of the battery body. The laminated battery according to claim 1, wherein the ultraviolet light-curing adhesive is coated with an "I" shape. The laminated battery according to claim 1, wherein the dimension of the cured ultraviolet light-curing adhesive in the height direction is higher than the dimension of the bent portion in the height direction. The laminated battery according to claim 1, wherein the dimension of the cured ultraviolet light-curing adhesive in the height direction is lower than the dimension of the bent portion in the height direction. The laminated battery according to claim 1, wherein the bent portion has a second protruding portion formed by re-bending the bent portion, and a second protruding portion formed by re-bending the second protruding portion 2Bend the part. The laminated battery according to claim 1, wherein the protruding portion further includes a plurality of stepped protruding portions and bent portions. A method for manufacturing a laminated battery, comprising: 　　 forming a package that encapsulates a battery body, and providing the package with protrusions that protrude from the side of the battery body; 　　application of a UV-curing adhesive; The process of bending the protruding part to form a bent part; 　　The process of fixing the bent part and the battery body by hardening the ultraviolet curing adhesive. The method for manufacturing a laminated battery according to claim 9, wherein in the process of applying the ultraviolet light-curing adhesive, the ultraviolet light-curing adhesive is completely coated. The method for manufacturing a laminated battery according to claim 9, wherein in the process of applying the ultraviolet light-curing adhesive, the ultraviolet light-curing adhesive is applied in dots. The method for manufacturing a laminated battery according to claim 9, wherein in the process of applying the ultraviolet light-curing adhesive, the ultraviolet light-curing adhesive is applied in an "I" shape. The method for manufacturing a laminated battery according to claim 9, wherein the dimension of the cured ultraviolet ray adhesive in the height direction is higher than the dimension of the bent portion in the height direction. The method for manufacturing a laminated battery according to claim 9, wherein the dimension of the ultraviolet-curable adhesive after curing in the height direction is lower than the dimension of the bent portion in the height direction. The method for manufacturing a laminated battery according to claim 9, further comprising: bending the bent portion to form a second protrusion, and bending the second protrusion to form a second bend Part of the project. The method for manufacturing a laminated battery according to claim 9, wherein the protruding portion further includes a plurality of stepped protruding portions and bent portions. An electronic device comprising: the laminated battery as described in any one of claims 1 to 8, or the laminated battery formed by the method for manufacturing a laminated battery of any one of claims 9 to 16. battery.

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