WO2015060525A1

WO2015060525A1 - Film attachment device of energy storage device

Info

Publication number: WO2015060525A1
Application number: PCT/KR2014/007674
Authority: WO
Inventors: 이동열
Original assignee: 비나텍 주식회사
Priority date: 2013-10-23
Filing date: 2014-08-19
Publication date: 2015-04-30
Also published as: KR101525573B1; KR20150046850A

Abstract

A film attachment device of an energy storage device comprises: a base body; a case support arranged on the base body and on which a case having a through hole formed at a side surface is arranged; a heater for supplying high frequencies to the case so as to heat the case; and a gas permeable membrane pressing unit for pressing a gas permeable membrane arranged at the portion having the through hole formed among the inner surfaces of the case.

Description

Film attachment device of energy storage device

The present invention relates to a film attaching device of an energy storage device, and more particularly, the present invention relates to a film attaching device of an energy storage device for attaching a gas passage membrane to a gas outlet formed in a case of the energy storage device.

Recently, supercapacitors have been developed as energy storage devices for systems that require a power supply, such as an electric vehicle, or a system for regulating or supplying an overload occurring instantaneously.

The supercapacitor includes a cell capable of collecting current and a metal case accommodating the cell.

Supercapacitors have various advantages, but have a disadvantage in that the internal pressure of the supercapacitors is greatly increased by the gas generated in the case when used for a long time.

In order to discharge the gas generated inside the super capacitor to the outside of the super capacitor, a through hole for exhausting the gas may be formed in the case of the super capacitor.

In order to form a through hole in the case of the super capacitor, a through hole may be formed in a direction from the outer side of the plate toward the inner side by using a piercing press such as Korean Patent Publication No. 10-2004-0006097. Can be.

On the other hand, when the through-hole is simply formed in the case, along with the gas generated in the case together with the electrolyte disposed inside the case also flows out of the case to shorten the life of the super capacitor.

In order to prevent this, a gas permeable membrane may be formed on the inner surface of the case of the supercapacitor so that gas passes and blocks the electrolyte.

The operator may attach the gas permeable membrane directly to the inner side of the case. Thus, when the operator attaches the gas permeable membrane to the inner side of the case by hand, the uniformity of the gas permeable membrane decreases depending on the operator.

When the adhesion uniformity of the gas permeable membrane is lowered, some of the gas permeable membrane is attached to the case, but some of the gas permeable membrane is not attached to the case, so that the gas generated inside the case as well as the electrolyte inside the case together with the gas are outside the case. Leakage occurs.

The present invention improves the adhesion uniformity of the gas barrier film to discharge the gas generated inside the case of the energy storage device such as a super capacitor and prevent leakage of the electrolyte and the like, and to more firmly attach the gas barrier film to the case. Provided is a film attachment device of an energy storage device.

In one embodiment, the film attachment device of the energy storage device comprises a base body; A case pedestal disposed on the base body and having a case having a through hole formed at a side thereof; A heater for heating the case by providing a high frequency to the case; And a permeable membrane pressurizing unit that presses a gas permeable membrane disposed at a portion of the inner surface of the case where the through hole is formed.

The case pedestal of the film attachment device of the energy storage device includes a first case pedestal and a second case pedestal spaced apart from the first case pedestal, wherein the case is placed on top surfaces of the first and second case pedestals, respectively. A recessed recess is formed.

The heater of the film attachment device of the energy storage device includes a coil-shaped high frequency induction heating heater surrounding the outer circumferential surface of the case placed on the case support.

The permeable membrane pressurizing unit of the film attachment device of the energy storage device includes a transfer unit entering and exiting the inner side of the case, an up-down unit coupled to the transfer unit, and a pressing unit coupled to the up-down unit.

The transfer unit of the film attachment device of the energy storage device is a transfer plate disposed on the base body, a transfer rail coupled to both edges of the transfer plate and transferred along the edges, a bracket coupled to the transfer rail, and It includes a drive unit for driving the bracket.

The bracket of the film attachment device of the energy storage device includes a first bracket coupled to the transfer rail and a second bracket formed on the first bracket perpendicular to the first bracket.

The up-down unit of the film attachment device of the energy storage device includes a drive plate coupled to the transfer unit and a drive unit for up-down the drive plate.

The pressing unit of the film attachment device of the energy storage device includes a pressing plate coupled to the up-down unit and an elastic member formed on the pressing plate to press the gas permeable membrane.

Part of the elastic member of the film attachment device of the energy storage device coupled to the gas permeable membrane is formed in a curved shape corresponding to the shape of the case.

The case of the film attachment device of the energy storage device is formed in a cylindrical shape and is formed of a metal material heated by the heater.

In the film attachment device of the energy storage device according to the present invention, the gas permeable membrane is firmly pressed against the case by pressing the gas permeable membrane with an automated facility by heating the case and forming a gas permeable membrane covering the through hole inside the case where the through hole is formed. It is possible to prevent the adhesion failure of the gas permeable membrane is generated by the coupling.

1 is a perspective view of a case to which a gas permeable membrane is attached by a film attachment device of an energy storage device according to an embodiment of the present invention.

FIG. 2 is a cross-sectional view taken along the line II ′ of FIG. 1.

3 is a block diagram of an apparatus for attaching a film of an energy storage device according to an embodiment of the present invention.

4 is an external perspective view of FIG. 3.

5 to 7 are cross-sectional views illustrating a process of attaching a gas barrier layer to an inner side of a case by a film attachment device of an energy storage device according to an embodiment of the present invention.

In the following description, only parts necessary for understanding the embodiments of the present invention will be described, it should be noted that the description of other parts will be omitted so as not to distract from the gist of the present invention.

The terms or words used in the specification and claims described below should not be construed as being limited to the ordinary or dictionary meanings, and the inventors are appropriate to the concept of terms in order to explain their invention in the best way. It should be interpreted as meanings and concepts in accordance with the technical spirit of the present invention based on the principle that it can be defined. Therefore, the embodiments described in the present specification and the configuration shown in the drawings are only preferred embodiments of the present invention, and do not represent all of the technical idea of the present invention, and various equivalents may be substituted for them at the time of the present application. It should be understood that there may be variations and variations.

1 is a perspective view of a case to which a gas permeable membrane is attached by a film attachment device of an energy storage device according to an embodiment of the present invention. FIG. 2 is a cross-sectional view taken along the line II ′ of FIG. 1.

1 and 2, an energy storage device according to an embodiment of the present invention may include, for example, a super capacitor.

The supercapacitor, one of the energy storage devices, includes a case 10 including a cell assembly (not shown) and a gas passage membrane 20.

The cell assembly has a configuration suitable for storing electrical energy, and the cell assembly includes, for example, a core wound and a core wound cell, the cell including a positive electrode, a negative electrode, a separator, and an electrolyte, and one of the present invention In an embodiment, the configuration of the cell assembly is not limited to the configuration of the bar cell assembly, which may be variously changed.

The case 10 provides a space for accommodating the cell assembly.

The case 10 may be made of a metal material or a synthetic resin material, and in one embodiment of the present invention, the case 10 is made of, for example, a metal material.

As the material forming the case 10, aluminum, stainless steel, tin-plated steel, or the like may be used.

The case 10 is formed in a metal cylindrical shape with both ends open, and terminal plates are disposed at one end of the case 10 with both ends opened and the other end opposite to the one end. The terminal plates serve to seal the case, and the electrolyte contained in the cell assembly is not leaked to the outside by the terminal plates.

On the other hand, as the terminal plates are coupled to both ends of the case 10, the electrolyte of the cell assembly does not leak to the outside of the case, while gas such as hydrogen generated inside the case 10 is also discharged to the outside of the case 10. As a result, the internal pressure of the case 10 may increase.

In order to discharge the gas generated inside the case 10 to the outside of the case 10, a plurality of through holes 15 may be formed at the side of the case 10 to discharge the gas inside the case 10. have.

In one embodiment of the present invention, the through holes 15 formed on the side of the case 10 are formed in a direction from the inner side of the case 10 toward the outer side of the case 10.

As such, when the through holes 15 are formed in the direction from the inner surface of the case 10 toward the outer surface of the case 10, burrs generated during forming the through holes 15 of the case 10 are formed. Is not formed on the inner side of the case 10 and a burr is formed on the outer side of the case 10.

When the burr is formed on the outer surface of the case 10 as described above, the burr may be formed on the inner surface of the case 10 even if the gas permeable membrane 20 selectively transmits only gas as shown in FIG. 2. It is possible to prevent the gas permeable membrane 20 from being torn or damaged by burrs.

When attaching the gas permeable membrane 20 having a thin thickness to the inner surface of the case 10 by hand, the inner space of the case 10 is narrow so that the gas permeable membrane 20 can be correctly attached to the designated position. Although it is difficult and this may cause frequent adhesion failure of the gas permeable membrane 20, by using the film attachment device of the energy storage device described below, a film such as the gas permeable membrane 20 at the position where the through hole is formed in the case Can be attached accurately.

Hereinafter, the film attaching device of the energy storage device will be described with reference to FIGS. 3 and 4.

3 is a block diagram of an apparatus for attaching a film of an energy storage device according to an embodiment of the present invention. 4 is an external perspective view of FIG. 3.

3 and 4, the film attachment device 600 of the energy storage device includes a base body 100, a case pedestal 200, a heater 300, and a permeable membrane pressurizing unit 400.

The base body 100 is, for example, formed in a plate shape, the case body 200 and the permeable membrane pressing unit 400 is disposed on the base body 100.

The base body 100 preferably includes a metal material having a small shape deformation.

The case pedestal 200 is disposed on the top surface of the base body 100 and fixed to the base body 100.

The case pedestal 200 serves to support the case 10 shown in FIG. 1.

The case pedestal 200 includes a first case pedestal 210 and a second case pedestal 220.

The first case pedestal 210 is made of an insulating material, the first case pedestal 210 is formed in a square plate shape, the first case pedestal 210 is disposed on the upper surface of the base body (100).

The first support groove 215 is formed on the upper surface of the first case pedestal 210 to prevent the case 10 from moving.

The shape of the first support groove 215 is, for example, formed in a concave shape corresponding to the shape of the case 10. For example, when the case 10 is formed in a cylindrical shape, the first support groove 215 is formed in a concave semi-circular groove shape.

The second case pedestal 220 is made of an insulating material, the second case pedestal 220 is formed in a square plate shape, the second case pedestal 220 is disposed on the upper surface of the base body (100).

In an embodiment of the present invention, the second case pedestal 220 and the first case pedestal 210 are spaced apart from each other, and the first and second case pedestals 210 and 220 may be formed in parallel to each other.

A second support groove 225 is formed on the upper surface of the second case pedestal 220 to prevent the case 10 from moving.

The shape of the second support groove 225 is, for example, formed in a concave shape corresponding to the shape of the case 10. For example, when the case 10 is formed in a cylindrical shape, the second support groove 225 is formed in a concave semicircular groove shape.

The heater 300 heats the cases 10 disposed on the first and second case pedestals 210 and 220 to further improve the adhesion of the case 10 and the gas permeable membrane 20.

In one embodiment of the present invention, the heater 300 includes a high frequency induction heating heater for rapidly heating the case 10 formed of a metal material by high frequency induction.

The heater 300 includes a high frequency generating unit 310 and a coil 320 for generating a high frequency. The coil 320 is wound several times with a diameter suitable for the case 10 to be inserted. The coil 320 is inserted into, for example, a space between the first and second case pedestals 210 and 220.

As such, when the coil 320 of the heater 300 is inserted between the first and second case pedestals 210 and 220, the through hole 15 of the case 10 between the first and second case pedestals 210 and 220. ) And the gas permeable membrane 20 is disposed, the coil 320 intensively provides heat to a portion of the case 10 to which the gas permeable membrane 20 is attached.

Although it is shown and described that the heater 300 is a high frequency induction heating heater in one embodiment of the present invention, various types of heaters that generate heat by various methods may be used.

On the other hand, it is difficult to closely attach the gas permeable membrane 20 disposed inside the case 10 to the inner surface of the case 10 only by providing heat to the case 10 by the heater 300.

The permeable membrane pressurizing unit 400 uniformly attaches the gas permeable membrane 20 to the inner surface of the case 10 so that the through holes 15 formed in the case 10 are covered by the gas permeable membrane 20. .

The permeable membrane pressurizing unit 400 includes a conveying unit 410, an up-down unit 420, and a pressing unit 430.

The transfer unit 410 includes a transfer plate 412, a transfer rail 414 coupled to the transfer plate 412, a bracket 416 coupled to the transfer rail 414, and the bracket 416 move the transfer plate 412. Along the drive unit 418 to cause a linear reciprocating motion.

The transfer plate 412 is disposed on the base body 100 in a rectangular plate shape, and the transfer plate 412 is formed in parallel with the case pedestal 200. The long side of the transfer plate 412 is formed in the same direction as the axial direction of the case 10.

The conveying rail 414 is coupled to both long sides of the conveying plate 412 to be conveyed along both opposing long sides of the conveying plate 412.

The bracket 416 is formed in an L shape, and the bracket 416 includes a first bracket portion 416a and a second bracket portion 416b.

The first bracket portion 416a is disposed in parallel with the transfer plate 412, and the first bracket portion 416a is disposed on the transfer plate 412. The first bracket portion 416a is coupled to the transfer rail 414.

The second bracket portion 416b is connected to the first bracket portion 416a, and the second bracket portion 416b is formed in a direction perpendicular to the first bracket portion 416a.

The drive unit 418 is connected to the rear end of the first bracket portion 416a, and the drive unit 418 pushes or pulls the first bracket portion 416a so that the bracket 416 moves along the transfer plate 412 to the case holder. It may be moved in the direction approaching 200 and the direction away from the case pedestal (200).

In one embodiment of the invention, the drive unit 418 may include, for example, a cylinder such as a pneumatic cylinder or a hydraulic cylinder that pushes or pulls the first bracket portion 416a.

Although in one embodiment the drive unit 418 is shown and described, for example, including a cylinder that pushes or pulls the bracket 416, the drive unit 418 uses a motor. A linear reciprocating mechanism may be used.

The up-down unit 420 includes a drive unit 422, a drive plate 424.

The drive unit 422 is coupled to the second bracket portion 416b of the bracket 416 of the transfer unit 410. The drive unit 422 includes a drive plate 424, which is up-down by the drive unit 422.

In one embodiment of the invention, the drive unit 422 may include a pneumatic cylinder or a hydraulic cylinder for up-down the drive plate 423.

The pressing unit 430 includes a pressing plate 432 coupled to the driving plate 423 and an elastic member 434 formed on the pressing plate 432.

The pressing plate 432 is coupled to an end of the driving plate 423, and an elastic member 426 is disposed at the end of the pressing plate 432.

The elastic member 426 may include rubber, synthetic resin, or the like, in which shape deformation is not generated by heat.

The elastic member 426 up-down by the pressing plate 432 is, for example, a gas permeation covering the through hole 15 and the through hole 15 formed in the case 10 disposed on the case pedestal 200. It is disposed facing the membrane 20, the elastic member 426 presses the gas permeable membrane 20 to attach the gas permeable membrane 20 to the inner surface of the case 10.

Hereinafter, a process of attaching the gas permeable membrane to the inside of the case of the film attachment device of the energy storage device will be described with reference to FIGS. 5 to 7.

3 and 5, first, the gas permeable membrane 20 is covered in the through hole 15 formed in the formed case 10, and an adhesive tape may be disposed at the edge of the gas permeable membrane 20. have.

In FIG. 5, the gas permeable membrane 20 is disposed on the inner side surface of the case 10.

Referring to FIG. 6, in a state where the gas permeable membrane 20 is disposed inside the case 10, the driving unit 418 of the transfer unit 410 of the permeable membrane pressing unit 400 may move the bracket 416. The elastic member 434 of the pressing unit 430 is pushed in the direction toward the case 10 to be inserted into the case 10.

The heater 300 after the elastic member 434 of the pressing unit 430 is inserted into the case 10 or before the elastic member 434 of the pressing unit 430 is inserted into the case 10. The case 10 is heated to heat the case 10 so that the gas permeable membrane 20 is suitable for being attached to the inside of the case 10.

Subsequently, as shown in FIG. 7, the pressing unit 430 is lowered by the up-down unit 420, and the elastic member 434 of the pressing unit 430 presses the gas permeable membrane 20 to press the gas permeable membrane ( 20) is firmly attached to the inside of the case 10 by heat and pressure.

As described in detail above, the gas permeable membrane is pressed into the case by heating and automated equipment while the gas permeable membrane covering the through hole is formed inside the case where the through hole is formed so that the gas permeable membrane is firmly coupled to the case. It is possible to prevent the adhesion failure of the permeable membrane from occurring.

On the other hand, the embodiments disclosed in the drawings are merely presented specific examples to aid understanding, and are not intended to limit the scope of the invention. It will be apparent to those skilled in the art that other modifications based on the technical idea of the present invention can be carried out in addition to the embodiments disclosed herein.

The present invention can be used in a system that requires a power supply, such as an electric vehicle, or a super capacitor, which is an energy storage device for a system for regulating or supplying an overload occurring instantaneously.

Claims

Base body;

A case pedestal disposed on the base body and having a case having a through hole formed at a side thereof;

A heater for heating the case by providing a high frequency to the case; And

And a permeable membrane pressurizing unit that presses a gas permeable membrane disposed in a portion of the inner surface of the case where the through hole is formed.
The method of claim 1,

The case pedestal includes a first case pedestal and a second case pedestal spaced apart from the first case pedestal, each of the energy storage device is formed on the upper surface of the first and second case pedestal concave support groove in which the case is placed; Film attachment device.
The method of claim 1,

The heater is a film attachment device of the energy storage device including a high frequency induction heating heater of the coil shape surrounding the outer peripheral surface of the case placed on the case support.
The method of claim 1,

The permeable membrane pressurizing unit includes a transfer unit entering and exiting the inner surface of the case, an up-down unit coupled to the transfer unit, and a pressing unit coupled to the up-down unit.
The method of claim 4, wherein

The transfer unit includes a transfer plate disposed on an upper portion of the base body, a transfer rail coupled to both edges of the transfer plate and transferred along the edges, a bracket coupled to the transfer rail, and a drive unit for driving the bracket. Film attachment device of the energy storage device comprising.
The method of claim 5,

The bracket includes a first bracket coupled to the transfer rail and a second bracket formed on the first bracket perpendicular to the first bracket.
The method of claim 4, wherein

And said up-down unit comprises a drive plate coupled to said transfer unit and a drive unit for up-down said drive plate.
The method of claim 4, wherein

And the pressing unit includes a pressing plate coupled to the up-down unit and an elastic member formed on the pressing plate to press the gas permeable membrane.
The method of claim 8,

The portion of the elastic member coupled to the gas permeable membrane is a film attachment device of the energy storage device formed in a curved shape corresponding to the shape of the case.
The method of claim 1,

The case is formed in a cylindrical shape, the film attachment device of the energy storage device formed of a metal material heated by the heater.