Cross Citation with Related Applications
[2]
This application claims the benefit of priority based on Korean Patent Application No. 10-2018-0143264 dated November 20, 2018, and all contents disclosed in the documents of the Korean patent application are incorporated as a part of this specification.
[3]
technical field
[4]
The present invention relates to an adhesive applying device and an adhesive applying method, and more particularly, to an adhesive applying device and an adhesive applying method capable of preventing a liquid adhesive from being applied and improving the productivity of a secondary battery.
background
[5]
In general, types of secondary batteries include a nickel cadmium battery, a nickel hydrogen battery, a lithium ion battery, and a lithium ion polymer battery. These secondary batteries are not only used in small products such as digital cameras, P-DVDs, MP3Ps, mobile phones, PDAs, Portable Game Devices, Power Tools and E-bikes, but also in large products requiring high output such as electric and hybrid vehicles and surplus power generation. It is also applied and used in power storage devices that store power or renewable energy and power storage devices for backup.
[6]
In order to manufacture such a secondary battery, first, an electrode active material slurry is applied to a positive electrode current collector and a negative electrode current collector to prepare a positive electrode and a negative electrode, and by laminating them on both sides of a separator, an electrode assembly having a predetermined shape (Electrode Assembly) to form Then, the electrode assembly is accommodated in the battery case, and the electrolyte is injected and then sealed.
[7]
The secondary battery is classified into a pouch type, a can type, and the like, according to a material of a case for accommodating the electrode assembly. The pouch type accommodates the electrode assembly in a pouch made of a soft polymer material having an irregular shape.
[8]
If the sealing part is left as it is after sealing the pouch-type battery case, the metal of the pouch film is exposed to the outside through the end surface of the sealing part. Accordingly, a short circuit (short) may occur due to corrosion of the metal or contact with the electrode of the secondary battery. Accordingly, it is necessary not to expose the cross section of the sealing part.
[9]
Conventionally, a double side folding method of folding the sealing part twice was performed, or a method of attaching an insulating tape to the sealing part was performed. However, this reduces the manufacturing yield of the secondary battery and takes a lot of time to optimize the equipment. In order to solve this problem, recently, a method of applying a liquid adhesive to the sealing part and then curing it has been developed. However, some nozzles for applying the liquid adhesive were clogged, and there was a problem in that the liquid adhesive was not applied to the sealing portion of some secondary batteries.
DETAILED DESCRIPTION OF THE INVENTION
technical challenge
[10]
An object to be solved by the present invention is to provide an adhesive applying device and an adhesive applying method capable of preventing the liquid adhesive from being applied and improving the productivity of a secondary battery.
[11]
The problems of the present invention are not limited to the problems mentioned above, and other problems not mentioned will be clearly understood by those skilled in the art from the following description.
means of solving the problem
[12]
Adhesive applying device according to an embodiment of the present invention for solving the above problems is a side comprising a support surface for supporting one surface of the upright secondary battery; and an adhesive space accommodating a liquid adhesive and into which a sealing part of one side of the upright secondary battery is inserted, and a flow path connected to the adhesive space to allow the liquid adhesive to flow into the adhesive space, and a lower part located below the side part. include
[13]
In addition, the bonding space may be formed to be recessed downward from the upper surface of the lower portion.
[14]
In addition, the bonding space may have a narrower width toward the bottom.
[15]
In addition, the bonding space may include an inner wall facing the support surface, an upper inner wall having chamfered or filleted edges, and a lower inner wall formed in parallel with the support surface.
[16]
In addition, it may further include a dispenser for injecting the liquid adhesive into the flow path.
[17]
In addition, by storing the liquid adhesive, it may further include an adhesive tank for supplying the liquid adhesive to the dispenser.
[18]
In addition, the flow path may be formed in plurality.
[19]
In addition, the side portion may further include an inclined surface having a specific inclination toward the inside from the lower end of the support surface.
[20]
Adhesive application method according to an embodiment of the present invention for solving the above problems comprises the steps of accommodating a liquid adhesive in the adhesive space of the adhesive applying device through a flow path; erecting the secondary battery and inserting a sealing part of one side of the secondary battery into the bonding space; taking out the secondary battery; and irradiating ultraviolet rays to the sealing part to which the liquid adhesive is applied.
[21]
In addition, in the step of injecting the liquid adhesive, the liquid adhesive may be injected into the flow path using a dispenser.
[22]
In addition, the dispenser may receive the liquid adhesive from an adhesive tank storing the liquid adhesive and inject the liquid adhesive into the flow path.
[23]
In addition, in the step of inserting the sealing part, the secondary battery may have one surface supported from the support surface of the adhesive applying device, and the one side sealing part may be inserted into the bonding space.
[24]
In addition, the liquid adhesive may be a urethane acrylate-based adhesive.
[25]
Other specific details of the invention are included in the detailed description and drawings.
Effects of the Invention
[26]
According to the embodiments of the present invention, there are at least the following effects.
[27]
Since the nozzle is not used, it is possible to prevent the nozzle from clogging and not applying the liquid adhesive.
[28]
In addition, since it is not necessary to set a line through which a nozzle moves and an application time to apply the liquid adhesive, it is possible to improve the manufacturing yield and improve the productivity of the secondary battery.
[29]
The effect according to the present invention is not limited by the contents exemplified above, and more various effects are included in the present specification.
Brief description of the drawing
[30]
1 is an assembly view of a pouch-type secondary battery according to an embodiment of the present invention.
[31]
2 is a perspective view of a pouch-type secondary battery according to an embodiment of the present invention.
[32]
3 is a flowchart of a method for applying an adhesive according to an embodiment of the present invention.
[33]
4 is a schematic view showing an adhesive applying device according to an embodiment of the present invention from the side.
[34]
5 is a schematic view showing a state in which the liquid adhesive is accommodated in the bonding space of the adhesive applying device according to an embodiment of the present invention from the side.
[35]
6 is a schematic diagram illustrating a state in which a sealing part of a secondary battery is inserted into an adhesive space of an adhesive applying device according to an embodiment of the present invention from the side.
[36]
7 is a schematic diagram illustrating a state in which a sealing part of a secondary battery is inserted into an adhesive space of an adhesive applying apparatus according to an embodiment of the present invention from the front.
[37]
8 is a schematic diagram illustrating a state in which ultraviolet rays are irradiated to a sealing part of a secondary battery according to an embodiment of the present invention.
[38]
9 is a schematic view showing an adhesive applying device according to another embodiment of the present invention from the side.
Modes for carrying out the invention
[39]
Advantages and features of the present invention and methods of achieving them will become apparent with reference to the embodiments described below in detail in conjunction with the accompanying drawings. However, the present invention is not limited to the embodiments disclosed below, but can be implemented in various different forms, and only these embodiments allow the disclosure of the present invention to be complete, and common knowledge in the art to which the present invention pertains It is provided to fully inform those who have the scope of the invention, and the present invention is only defined by the scope of the claims. Like reference numerals refer to like elements throughout.
[40]
Unless otherwise defined, all terms (including technical and scientific terms) used herein may be used with the meaning commonly understood by those of ordinary skill in the art to which the present invention belongs. In addition, terms defined in a commonly used dictionary are not to be interpreted ideally or excessively unless clearly specifically defined.
[41]
The terminology used herein is for the purpose of describing the embodiments and is not intended to limit the present invention. In this specification, the singular also includes the plural, unless specifically stated otherwise in the phrase. As used herein, “comprises” and/or “comprising” does not exclude the presence or addition of one or more other components in addition to the stated components.
[42]
Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.
[43]
1 is an assembly view of a pouch-type secondary battery 1 according to an embodiment of the present invention, and FIG. 2 is a perspective view of a pouch-type secondary battery 1 according to an embodiment of the present invention.
[44]
In the process of manufacturing the pouch-type secondary battery 1 according to an embodiment of the present invention, first, a slurry in which an electrode active material, a binder, and a plasticizer are mixed is applied to a positive electrode current collector and a negative electrode current collector to prepare a positive electrode and a negative electrode, The electrode assembly 10 of a predetermined shape is formed by stacking this on both sides of a separator, and then the electrode assembly 10 is inserted into the battery case 13, and the electrolyte is injected and then sealed.
[45]
As shown in FIG. 1 , the electrode assembly 10 includes an electrode tab 11 . The electrode tab 11 is respectively connected to the positive electrode and the negative electrode of the electrode assembly 10 , and protrudes to the outside of the electrode assembly 10 , and serves as a path through which electrons can move between the inside and the outside of the electrode assembly 10 . . The current collector of the electrode assembly 10 includes a portion to which the electrode active material is applied and a distal portion to which the electrode active material is not applied, that is, an uncoated portion. In addition, the electrode tab 11 may be formed by cutting the uncoated area or may be formed by connecting a separate conductive member to the uncoated area by ultrasonic welding or the like. As shown in FIG. 1 , the electrode tabs 11 may protrude side by side from one side of the electrode assembly 10 in the same direction, but are not limited thereto and may protrude in different directions.
[46]
An electrode lead 12 is connected to the electrode tab 11 of the electrode assembly 10 by spot welding or the like. A part of the electrode lead 12 is surrounded by the insulating portion 14 . The insulating part 14 is positioned limitedly in the sealing part 134 to which the upper pouch 131 and the lower pouch 132 of the battery case 13 are heat-sealed, so that the electrode lead 12 is attached to the battery case 13 . glue it together In addition, electricity generated from the electrode assembly 10 is prevented from flowing to the battery case 13 through the electrode lead 12 , and the sealing of the battery case 13 is maintained. Accordingly, the insulating portion 14 is made of a non-conductive material that does not conduct electricity well. In general, as the insulating part 14, an insulating tape that is easy to attach to the electrode lead 12 and has a relatively thin thickness is often used. have.
[47]
The electrode leads 12 may extend in the same direction or in opposite directions depending on the formation positions of the positive electrode tab 111 and the negative electrode tab 112 . The material of the positive lead 121 and the negative lead 122 may be different from each other. That is, the positive electrode lead 121 may be made of the same aluminum (Al) material as the positive electrode plate, and the negative electrode lead 122 may be made of the same copper (Cu) material as the negative electrode plate or nickel (Ni) coated copper. And a portion of the electrode lead 12 protruding to the outside of the battery case 13 becomes a terminal portion, and is electrically connected to the external terminal.
[48]
In the pouch-type secondary battery 1 according to embodiments of the present invention, the battery case 13 is a pouch made of a flexible material. Hereinafter, the battery case 13 will be described as a pouch. The battery case 13 accommodates and seals the electrode assembly 10 so that a portion of the electrode lead 12, that is, the terminal portion is exposed. As shown in FIG. 1 , the battery case 13 includes an upper pouch 131 and a lower pouch 132 . The lower pouch 132 is provided with an accommodating space 1331 accommodating the electrode assembly 10 , and the upper pouch 131 prevents the electrode assembly 10 from being separated to the outside of the battery case 13 . The accommodation space 1331 is covered from the top. At this time, as shown in FIG. 1 , an accommodating space 1331 is also formed in the upper pouch 131 to accommodate the electrode assembly 10 in the upper portion. The upper pouch 131 and the lower pouch 132 may be manufactured with one side connected to each other as shown in FIG.
[49]
When the electrode lead 12 is connected to the electrode tab 11 of the electrode assembly 10 and the insulating part 14 is formed on a portion of the electrode lead 12 , the accommodation space 1331 provided in the lower pouch 132 . The electrode assembly 10 is accommodated in the , and the upper pouch 131 covers the accommodation space 1331 from the top. Then, when the electrolyte is injected therein and the sealing part 134 formed on the edges of the upper pouch 131 and the lower pouch 132 is sealed, the secondary battery 1 is manufactured as shown in FIG. 2 .
[50]
3 is a flowchart of a method for applying an adhesive according to an embodiment of the present invention.
[51]
According to the adhesive application method according to an embodiment of the present invention, since the nozzle is not used, it is possible to prevent the nozzle from being clogged and the liquid adhesive 3 not being applied. In addition, since it is not necessary to set a line through which the nozzle moves and an application time to apply the liquid adhesive 3 , it is possible to improve the manufacturing yield and improve the productivity of the secondary battery 1 .
[52]
To this end, the adhesive application method according to an embodiment of the present invention, the adhesive space 221 of the adhesive application device 2 through the flow path 222 receiving the liquid adhesive (3); inserting a sealing part 134 of one side of the secondary battery 1 into the adhesion space 221 by making the secondary battery 1 upright; taking out the secondary battery (1); and irradiating ultraviolet rays 41 to the sealing part 134 to which the liquid adhesive 3 is applied.
[53]
Hereinafter, each step shown in the flowchart of FIG. 3 will be described in detail with reference to FIGS. 4 to 8 .
[54]
4 is a schematic view showing the adhesive applying device 2 according to an embodiment of the present invention from the side.
[55]
Adhesive applying device 2 according to an embodiment of the present invention, as shown in Figure 4, the side portion 21 including a support surface 211 for supporting one surface of the upright secondary battery (1); and an adhesive space 221 accommodating the liquid adhesive 3 and into which one side sealing part 134 of the upright secondary battery 1 is inserted, and the adhesive space 221 so that the liquid adhesive 3 is connected to the It includes a flow path 222 flowing into the bonding space 221 , and includes a lower portion 22 positioned below the side portion 21 .
[56]
The side portion 21 of the adhesive application device 2 includes a support surface 211 . The support surface 211 supports one surface of the secondary battery 1 when the secondary battery 1 is uprightly inserted into the bonding space 221 . To this end, it is preferable that the support surface 211 is formed flat and parallel to one surface of the upright secondary battery 1 . Thereby, one surface of the secondary battery 1 can be stably supported.
[57]
The lower portion 22 of the adhesive application device 2 is positioned below the side portion 21 , and includes an adhesion space 221 and a flow path 222 . The side portion 21 and the lower portion 22 of the adhesive application device 2 may be separately manufactured and then assembled, but may be formed in various ways without being limited, such as being integrally manufactured from the beginning.
[58]
The adhesive space 221 accommodates the liquid adhesive 3 (shown in FIG. 5 ) and the one-side sealing part 134 of the upright secondary battery 1 is inserted. To this end, the adhesive space 221 may be formed to be recessed downward from the upper surface of the lower portion 22 of the adhesive applying device 2 as shown in FIG. 4 . When the secondary battery 1 is upright, one surface of the secondary battery 1 supported by the supporting surface 211 faces the left or right side of the secondary battery 1 , and one side sealing part 134 of the secondary battery 1 . is facing downwards. Accordingly, the bonding space 221 is formed in the lower portion 22 positioned below the side portion 21 , so that the secondary battery 1 is supported on the support surface 211 , and the sealing part 134 is naturally formed in the bonding space 221 . can be inserted into
[59]
The bonding space 221 accommodates the liquid adhesive 3 . Accordingly, when the sealing part 134 of the secondary battery 1 is inserted into the bonding space 221 , the sealing part 134 of the secondary battery 1 is immersed in the liquid adhesive 3 . And when the secondary battery 1 is taken out again, the liquid adhesive 3 is applied to a portion of the sealing part 134 immersed in the liquid adhesive 3 . Therefore, as the depth of the bonding space 221 increases, a large amount of the liquid adhesive 3 is accommodated, so the area of ​​the sealing part 134 to which the liquid adhesive 3 is applied is widened, and the depth of the bonding space 221 is increased. The shallower, the less liquid adhesive 3 is accommodated, so the area of ​​the sealing part 134 to which the liquid adhesive 3 is applied becomes narrow.
[60]
The liquid adhesive 3 may be a urethane acrylate (UA)-based adhesive that is cured when irradiated with ultraviolet (UV) rays. Urethane acrylate is a compound prepared by UV curing type (UV curing type) of a urethane resin, and is a generic term for compounds having both a urethane bond and an acrylate group. Such urethane acrylate is excellent in insulation, flexibility and abrasion resistance. Accordingly, when the liquid adhesive 3 applied to the sealing part 134 is irradiated with ultraviolet rays 41 (shown in FIG. 8 ), it can be cured and insulated from the metal exposed through the end surface of the sealing part 134 . .
[61]
The bonding space 221 becomes narrower toward the bottom. That is, the upper width of the bonding space 221 may be relatively wider than the lower width, whereas the lower width of the bonding space 221 may be relatively narrower than the upper width. In particular, as shown in FIG. 4 , the inner wall (referred to as the left inner wall in FIG. 4 ) facing the support surface 211 in the bonding space 221 may include an upper inner wall 2211 and a lower inner wall 2212 . have. In addition, the upper inner wall 2211 may have a shape in which edges are chamfered or filleted so that the width of the bonding space 221 is continuously narrowed downward. Thereby, the sealing part 134 of the secondary battery 1 can be easily inserted. In addition, the lower inner wall 2212 may be formed parallel to the support surface 211 . Accordingly, when the sealing part 134 of the secondary battery 1 is completely inserted into the bonding space 221 , the sealing part 134 of the secondary battery 1 can be stably supported by the lower inner wall 2212 . have. Meanwhile, a step may not be formed in the inner wall (referred to as the right inner wall 2213 in FIG. 4 ) facing the opposite direction of the support surface 211 in the bonding space 221 . Accordingly, there may be no obstacles that prevent the insertion of the sealing part 134 of the secondary battery 1 .
[62]
The flow path 222 is connected to the bonding space 221 to become a passage through which the liquid adhesive 3 flows into the bonding space 221 . Although only one flow path 222 may be formed, in order for the liquid adhesive 3 to be quickly accommodated in the bonding space 221 , it is preferable to form a plurality of flow paths 222 .
[63]
Although not shown in the drawings, the liquid adhesive 3 is stored in a separately provided adhesive tank. Then, the adhesive tank supplies the stored liquid adhesive 3 to the dispenser, and the dispenser injects the supplied liquid adhesive 3 into the flow path 222 . Accordingly, the liquid adhesive 3 injected into the flow path 222 may flow through the flow path 222 and be accommodated in the adhesion space 221 . When the flow path 222 is formed in plurality, only one dispenser is formed, and the liquid adhesive 3 may be injected into each flow path 222 while moving. However, the present invention is not limited thereto, and a plurality of dispensers may be formed, so that a dispenser corresponding to each flow path 222 may inject the liquid adhesive 3 into the corresponding flow path 222 .
[64]
In order to insert the sealing part 134 of the secondary battery 1 into the bonding space 221 , the user must directly grip the upper part of the secondary battery 1 by hand or a separate gripper must grip it. However, if the height of the adhesive applying device 2 is higher than that of the secondary battery 1 , the support surface 211 and the user's hand or gripper may collide with each other. Accordingly, the adhesive applying device 2 preferably has a lower height than the secondary battery 1 when the sealing portion 134 of the secondary battery 1 is inserted into the bonding space 221 .
[65]
5 is a schematic view showing a state in which the liquid adhesive 3 is accommodated in the adhesive space 221 of the adhesive applying device 2 according to an embodiment of the present invention from the side.
[66]
In order to apply the adhesive to the sealing part 134 of the secondary battery 1 , as shown in FIG. 5 , first, the adhesive space 221 of the adhesive applying device 2 through the flow path 222 passes through the liquid adhesive 3 ) is accommodated (S301). At this time, when the adhesive tank storing the liquid adhesive 3 supplies the liquid adhesive 3 to the dispenser, the liquid adhesive 3 may be injected into the flow path 222 using the dispenser. Then, the liquid adhesive 3 may flow through the flow path 222 and be accommodated in the bonding space 221 . If the amount of the liquid adhesive 3 is too small, the liquid adhesive 3 may not be sufficiently applied to the sealing part 134 . Conversely, if the amount of the liquid adhesive 3 is too large, when the sealing part 134 is inserted into the adhesive space 221 and immersed in the liquid adhesive 3 , the liquid adhesive 3 is attached to the outside of the adhesive space 221 . may leak. Accordingly, the optimum amount of the liquid adhesive 3 that can be sufficiently applied to the sealing portion 134 and does not leak to the outside of the bonding space 221 can be experimentally derived.
[68]
6 is a schematic view showing a state in which the sealing part 134 of the secondary battery 1 is inserted into the adhesive space 221 of the adhesive applying device 2 according to an embodiment of the present invention from the side, and FIG. 7 is It is a schematic diagram showing a state in which the sealing part 134 of the secondary battery 1 is inserted into the adhesive space 221 of the adhesive applying apparatus 2 according to an embodiment of the present invention from the front.
[69]
When the liquid adhesive 3 is sufficiently accommodated in the adhesive space 221 , as shown in FIGS. 6 and 7 , the secondary battery 1 is upright, and the sealing part 134 of one side of the secondary battery 1 is attached to the above. It is inserted into the bonding space 221 (S302). At this time, when one surface of the secondary battery 1 is supported by the support surface 211 of the adhesive applying device 2 , the secondary battery 1 can be stably erected.
[70]
If the upper pouch 131 and the lower pouch 132 of the battery case 13 are manufactured by connecting one side to each other, when the upper pouch 131 covers the accommodation space 1331, the connected portion is folded. do. Since the metal of the pouch film is not exposed to the outside of this folded portion, there is no need to apply the liquid adhesive 3 . However, since the metal of the pouch film is exposed to the outside of the heat-sealed sealing portion 134 rather than the folded portion, the liquid adhesive 3 must be applied. Therefore, when making the battery case 13 upright, the sealing part 134 to which the liquid adhesive 3 is to be applied is placed upright so that it is located downward.
[71]
6 and 7, the secondary battery 1 is shown to be upright so that the full width of the secondary battery 1 is directed in the vertical direction, but the present invention is not limited thereto, and the overall length of the secondary battery 1 is in the vertical direction. Thus, the secondary battery 1 may be made upright. If the secondary battery 1 is erected so that the full width of the secondary battery 1 faces in the vertical direction, the sealing part 134 elongated in the longitudinal direction of the secondary battery 1 is positioned downward. Then, the sealing part 134 formed long in the longitudinal direction is inserted into the bonding space 221 and immersed in the liquid adhesive 3 . However, if the secondary battery 1 is erected so that the overall length of the secondary battery 1 faces in the vertical direction, the sealing part 134 elongated in the width direction of the secondary battery 1 is positioned downward. Then, the sealing portion 134 formed long in the width direction is inserted into the bonding space 221 and immersed in the liquid adhesive 3 .
[72]
8 is a schematic view showing a state in which ultraviolet rays 41 are irradiated to the sealing part 134 of the secondary battery 1 according to an embodiment of the present invention.
[73]
After the sealing part 134 of the secondary battery 1 is sufficiently immersed in the liquid adhesive 3, the secondary battery 1 is again taken out (S303). Then, the liquid adhesive 3 is applied to a portion of the sealing portion 134 that was immersed in the liquid adhesive 3 . And, as shown in FIG. 8, the liquid adhesive 3 is applied to the sealing part 134 using the UV lamp 4 to irradiate the ultraviolet rays 41 (S304).
[74]
The UV lamp 4 is a lamp that irradiates ultraviolet rays 41 to the outside. In addition, the ultraviolet light 41 is an electromagnetic wave having a shorter wavelength than visible light, and has a wavelength of approximately 10 nm to 400 nm. The wavelength is so short that it is invisible to the human eye, and the energy is high and the chemical action is large, so it is easily used for sterilization and bleaching.
[75]
On the other hand, as described above, the liquid adhesive 3 may be a urethane acrylate (UA)-based adhesive that is cured when the ultraviolet (41) is irradiated. Accordingly, when the liquid adhesive 3 applied to the sealing part 134 is irradiated with ultraviolet rays 41 , it is possible to insulate the metal that is cured and exposed through the end surface of the sealing part 134 .
[76]
9 is a schematic view showing an adhesive applying device (2a) according to another embodiment of the present invention from the side.
[77]
In the adhesive application device 2 according to an embodiment of the present invention, the support surface 211 of the side part 21 is parallel to one surface of the secondary battery 1 , and the support surface 211 is the adhesive application device 2 . ) is formed extending to the lower portion 22. However, when the sealing part 134 of the secondary battery 1 is immersed in the liquid adhesive 3 and then pulled out, a part of the liquid adhesive 3 applied to the sealing part 134 of the secondary battery 1 falls. This may contaminate the upper surface of the lower portion 22 of the adhesive application device 2 . However, even if the liquid adhesive 3 that has fallen is cleaned, the liquid adhesive 3 may remain at the connecting edge of the side part 21 and the lower part 22 of the adhesive application device 2 . Then, when the sealing part 134 of the secondary battery 1 is again inserted into the bonding space 221 later, the outer surface of the secondary battery 1 may be contaminated.
[78]
According to another embodiment of the present invention, as shown in FIG. 9 , the side portion 21a of the adhesive applying device 2a has a specific inclination from the lower end of the support surface 211a toward the inside of the side portion 21a. The branch is formed with an inclined surface 212a. Thereby, it is possible to easily determine with the naked eye whether the liquid adhesive 3 is contaminated on the upper surface of the lower part 22 , and it is also possible to easily clean the upper surface of the contaminated lower part 22 . In addition, it is possible to prevent the outer surface of the secondary battery 1 from being contaminated.
[79]
Those of ordinary skill in the art to which the present invention pertains will understand that the present invention may be embodied in other specific forms without changing the technical spirit or essential features thereof. Therefore, it should be understood that the embodiments described above are illustrative in all respects and not restrictive. The scope of the present invention is indicated by the following claims rather than the above detailed description, and various embodiments derived from the meaning and scope of the claims and their equivalent concepts should be construed as being included in the scope of the present invention.
Claims
[Claim 1]
a side including a support surface for supporting one surface of an upright secondary battery; and an adhesive space accommodating a liquid adhesive and into which a sealing part of one side of the upright secondary battery is inserted, and a flow path connected to the adhesive space to allow the liquid adhesive to flow into the adhesive space, and a lower part located below the side part. Adhesive applicator comprising.
[Claim 2]
According to claim 1, wherein the bonding space, the adhesive application device is formed to be recessed downward from the upper surface of the lower portion.
[Claim 3]
The adhesive applying device according to claim 2, wherein the adhesive space becomes narrower in a downward direction.
[Claim 4]
The adhesive applying apparatus according to claim 3, wherein the bonding space includes an inner wall facing the support surface, an upper inner wall having chamfered or filleted edges, and a lower inner wall formed parallel to the support surface.
[Claim 5]
The adhesive applying apparatus according to claim 1, further comprising a dispenser for injecting the liquid adhesive into the flow path.
[Claim 6]
The adhesive application device according to claim 5, further comprising an adhesive tank for storing the liquid adhesive and supplying the liquid adhesive to the dispenser.
[Claim 7]
The adhesive applying apparatus according to claim 1, wherein the flow passages are formed in plurality.
[Claim 8]
According to claim 1, wherein the side portion, from the lower end of the support surface, the adhesive application device further comprising an inclined surface having a specific inclination toward the inside.
[Claim 9]
receiving the liquid adhesive in the adhesive space of the adhesive applying device through the flow path; erecting the secondary battery and inserting a sealing part of one side of the secondary battery into the bonding space; taking out the secondary battery; and irradiating ultraviolet rays to the sealing part to which the liquid adhesive is applied.
[Claim 10]
The method of claim 9 , wherein in the injecting of the liquid adhesive, the liquid adhesive is injected into the flow path using a dispenser.
[Claim 11]
The method of claim 10 , wherein the dispenser receives the liquid adhesive from an adhesive tank storing the liquid adhesive and injects the liquid adhesive into the flow path.
[Claim 12]
The method of claim 9 , wherein in the inserting of the sealing part, one side of the secondary battery is supported from a supporting surface of the adhesive applying device, and the one side sealing part is inserted into the bonding space.
[Claim 13]
The method of claim 9 , wherein the liquid adhesive is a urethane acrylate-based adhesive.