KR20170070339A - Electrochemical energy storage device and manufacturing method thereof - Google Patents

Electrochemical energy storage device and manufacturing method thereof Download PDF

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Publication number
KR20170070339A
KR20170070339A KR1020150177160A KR20150177160A KR20170070339A KR 20170070339 A KR20170070339 A KR 20170070339A KR 1020150177160 A KR1020150177160 A KR 1020150177160A KR 20150177160 A KR20150177160 A KR 20150177160A KR 20170070339 A KR20170070339 A KR 20170070339A
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KR
South Korea
Prior art keywords
electrode
rubber cap
case
electrode element
electrochemical energy
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Application number
KR1020150177160A
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Korean (ko)
Inventor
정한기
문대진
윤이나
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비나텍주식회사
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Priority to KR1020150177160A priority Critical patent/KR20170070339A/en
Publication of KR20170070339A publication Critical patent/KR20170070339A/en

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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE
    • H01G9/00—Electrolytic capacitors, rectifiers, detectors, switching devices, light-sensitive or temperature-sensitive devices; Processes of their manufacture
    • H01G9/004—Details
    • H01G9/08—Housing; Encapsulation
    • H01G9/10—Sealing, e.g. of lead-in wires
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE
    • H01G11/00—Hybrid capacitors, i.e. capacitors having different positive and negative electrodes; Electric double-layer [EDL] capacitors; Processes for the manufacture thereof or of parts thereof
    • H01G11/22—Electrodes
    • H01G11/26—Electrodes characterised by their structure, e.g. multi-layered, porosity or surface features
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE
    • H01G11/00—Hybrid capacitors, i.e. capacitors having different positive and negative electrodes; Electric double-layer [EDL] capacitors; Processes for the manufacture thereof or of parts thereof
    • H01G11/78—Cases; Housings; Encapsulations; Mountings
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE
    • H01G9/00—Electrolytic capacitors, rectifiers, detectors, switching devices, light-sensitive or temperature-sensitive devices; Processes of their manufacture
    • H01G9/004—Details
    • H01G9/04—Electrodes or formation of dielectric layers thereon
    • H01G9/06—Mounting in containers

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Sealing Battery Cases Or Jackets (AREA)
  • Electric Double-Layer Capacitors Or The Like (AREA)

Abstract

The present invention discloses an electrochemical energy storage device and a method of manufacturing the same. The electrochemical energy storage device of the present invention comprises an electrode element for storing electrochemical energy, a pair of electrode terminals protruding from an upper portion of the electrode element, a case having an open portion formed on the upper portion and an electrode element embedded through the open portion, A pair of through-holes through which the electrode terminals of the pair are passed, a rubber cap spaced apart from the upper portion of the electrode element, and a polymer resin formed on the upper surface of the rubber cap so as to lock the end of the opening portion, do.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electrochemical energy storage device,

The present invention relates to an electrochemical energy storage device, and more particularly, to an electrochemical energy storage device for sealing an opening portion of a case by double sealing to prevent leakage, and a method of manufacturing the same.

In the information age, high-value-added industries that collect and utilize diverse and useful information in real time through various information and communication devices are leading. In order to secure the reliability of such systems, it is recognized that supply of stable energy is an important factor.

As part of securing stable energy, an electrochemical energy storage device, which can convert electrical energy into chemical energy and store it, and convert it into electrical energy when necessary, is used.

Batteries, which are the most common electrochemical energy storage devices, are widely used because they can store a considerable amount of energy in relatively small volumes and weights, and can output moderate power in many applications. However, batteries have a common problem of low storage characteristics and low cycle life regardless of type. This is due to the natural deterioration of the chemical contained in the battery or deterioration due to use. The disadvantage of such a battery is a natural phenomenon, so no alternative is presented.

An electric double-layer capacitor (EDLC) is an energy storage device using an electric double layer formed between an electrode and an electrolyte, unlike a battery using a chemical reaction.

The basic structure of an electric double layer capacitor is composed of an electrode, an electrolyte, a current collector, and a separator. A voltage of several volts is applied to both ends of the unit cell electrode, And a series of electrochemical mechanisms that move along and adsorb onto the surface of the electrode.

In the electric double layer capacitor, the electrolytic solution is mainly used by dissolving a certain amount of metal salt or organic salt in the organic solution. In this case, it is possible to store more energy than conventional capacitors, and it is advantageous that rapid charge / discharge is possible.

In order to safely use such an electric double charge capacitor, an electrode element is embedded in a case and sealed with a rubber cap. At this time, if the electric double charge capacitor is used for a long time, foreign matter is generated on the surface of the rubber cap, and the lifetime of the electric double charge capacitor due to foreign matter is shortened.

Korean Patent Registration No. 10-1508646 (Feb.

SUMMARY OF THE INVENTION An object of the present invention is to provide an electrochemical energy storage device for sealing a rubber cap and a polymer resin in an opening of a case by double sealing to prevent leakage, and a method of manufacturing the same.

In order to achieve the above object, an electrochemical energy storage device according to the present invention comprises: an electrode element for storing electrochemical energy; a pair of electrode terminals protruding from the electrode element; A rubber cap formed on an upper surface of the rubber cap and having a pair of through holes through which the pair of electrode terminals are inserted, And a polymer resin which is formed so that an end of the opening portion is locked to seal the case.

In addition, the case may be formed such that a side of the case in contact with the rubber cap is depressed inwardly, and an end of the opening is formed in a hook shape and spaced apart from the rubber cap.

The polymer resin is an epoxy resin.

The method of manufacturing an electrochemical energy storage device according to the present invention includes the steps of preparing an electrode element for storing electrochemical energy, embedding the electrode element through the opening in a case having an opening portion at an upper end thereof, A step of deforming a side surface of the case in contact with the rubber cap and an end of the opening, and a step of forming a polymer resin so that the end of the opening is locked on the upper portion of the rubber cap .

According to the electrochemical energy storage device and the method of manufacturing the same according to the present invention, leakage of liquid can be prevented by double sealing the rubber cap and the polymer resin in the opening portion of the case.

1 is a cross-sectional view illustrating an electrochemical energy storage device according to an embodiment of the present invention.
2 is an exploded perspective view illustrating an electrode device according to an embodiment of the present invention.
3 is a flowchart illustrating a method of manufacturing an electrochemical energy storage device according to an embodiment of the present invention.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings. In the drawings, the same reference numerals as used in the appended drawings denote like elements, unless indicated otherwise. In the following description of the present invention, a detailed description of known functions and configurations incorporated herein will be omitted when it may make the subject matter of the present invention rather obvious or understandable to those skilled in the art.

In the electrochemical energy storage device of the present invention, an electric double charge capacitor using an electric double layer formed between an electrode and an electrolytic solution is used, but the technical idea of the present invention is not limited thereto. That is, the electrochemical energy storage device can be applied to any device capable of storing electrochemical energy, and it can be applied to an electrolytic capacitor having a capacitance of several tens to several hundreds of microns A super capacitor, a lithium ion capacitor, or the like may be used.

FIG. 1 is a cross-sectional view illustrating an electrochemical energy storage device according to an embodiment of the present invention, and FIG. 2 is an exploded perspective view illustrating an electrode device according to an embodiment of the present invention.

1 and 2, an electrochemical energy storage device 100 includes an electrode element 10, an electrode terminal 20, a case 50, a rubber cap 60, and a polymer resin 70.

The electrode element 10 stores electrochemical energy, and converts electrical energy into chemical energy or chemical energy into electrical energy. The electrode element 10 includes an anode 11, a cathode 13, an electrolyte (not shown), and a separator 15.

The positive electrode 11 includes a positive electrode current collector and a positive electrode material made of a slurry provided on one or both surfaces of the positive electrode collector. The negative electrode 13 includes a negative electrode collector and a slurry provided on one or both surfaces of the negative electrode collector And the negative electrode material made.

The positive electrode current collector and the negative electrode current collector accumulate electrons generated by the electrochemical reaction of the active material in the electrode element 10 and transmit the accumulated electrons to an external circuit. The positive electrode current collector and the negative electrode current collector may be made of a single body such as polycarbonate (PC), aluminum, nickel, titanium, copper, gold, silver, platinum or cobalt, A conductive polymer such as thiophene, polyphenol, etc. may be used. In particular, the cathode active material, the conductive material, and the binder are used as the cathode material and the cathode material made of the slurry.

As the electrode active material, a substance capable of adsorbing or desorbing a cation or anion of a salt in the electrolyte in the positive electrode current collector and the negative electrode current collector may be used. That is, activated carbon may be used as an electrode active material. Porous carbon-based materials having high electrical conductivity, thermal conductivity, low density, suitable corrosion resistance, low coefficient of thermal expansion, and high purity can be used as the electrode active material. For example, an activated carbon powder (ACP), a carbon nano tube (CNT), a graphite, a vapor grown carbon fiber (VGCF), a carbon aerogel, Carbon nano fiber (CNF) produced by carbonizing a polymer such as polyacrylonitrile (PAN) and polyvinylidenefluoride (PVdF) may be used.

The conductive material may be carbon black (CB), acetylene black, ketjen black, graphite, super-p, or the like as a material for imparting conductivity to the electrode .

The binder serves as a bridge for bonding the electrode active material and the conductive material, and for binding the electrode active material, the positive electrode collector, and the negative electrode collector. Materials usable as binders include carboxy methyl cellulose (CMC), polyvinylpyrrolidone (PVP), fluorinated polytetrafluoroethylene (PTFE) powder or emulsion, and rubber-based styrene butadiene rubber ( styrene butadiene rubber (SBR), and the like. These materials may be used in a mixture of at least one of these materials.

The CMC maintains the viscosity of the electrode slurry in a state similar to that of the paste, and enhances the binding strength with the positive electrode collector and the negative electrode collector. CMC increases the binding force but increases the embrittlement of the electrode material layer after casting the electrode slurry. CMC can be used to obtain the binding force between the current collector and the electrode slurry.

Polyvinylpyrrolidone serves as a dispersant and helps disperse the particles constituting the electrode slurry. Polyvinylpyrrolidone can be substituted if there are other substances that are low in addition and can aid dispersion.

Polytetrafluoroethylene is emulsified in the electrode slurry and melts at the melting point or higher, so that the polymer is held by the polymer like a web. Polytetrafluoroethylene can stably increase the bonding force between particles.

Rubber-based styrene-butadiene rubber protects the surface by coating the surface of the particles.

Additionally, the binder may further comprise polyvinylidene fluoride, carboxymethyl cellulose, hydropropyl methylcellulose, polyvinyl alcohol, and the like.

The electrolytic solution can make the charge generated from the positive electrode and the negative electrode move smoothly, and can be composed of a salt of a cation and an anion as a liquid solvent. For example, hydrochloric acid, sulfuric acid, nitric acid, acetic acid may be used alone or in combination with distilled water by selecting two or more electrolytes. It is also possible to use Li 2 SO 4 , Na 2 SO 4 , K 2 SO 4 , (NH 4 ) 2 SO 4 , LiOH, NaOH, KOH and NH 4 OH alone or in combination with distilled water have.

As the electrolyte, a cyclic carbonate, a linear carbonate, a lactone, an ether, an ester, a ketone, and / or water may be used.

Examples of the cyclic carbonates include ethylene carbonate (EC), propylene carbonate (PC), and butylene carbonate (BC). Examples of the linear carbonate include diethyl carbonate (DEC), dimethyl carbonate (DMC), dipropyl carbonate ), Ethyl methyl carbonate (EMC), and methyl propyl carbonate (MPC). Examples of the lactone are gamma butyrolactone (GBL), and examples of the ether include dibutyl ether, tetrahydrofuran, 2-methyltetrahydrofuran, 1,4-dioxane, 1,2-dimethoxyethane and the like . Examples of the esters include methyl acetate, ethyl acetate, methyl propionate, methyl pivalate, and the like. The ketones include, but are not limited to, polymethyl vinyl ketone. These solvents may be used alone or in admixture of two or more.

This, as well as the electrolytic solution as Li +, Na +, K + or a cation including an alkali metal ion composed of a combination thereof, such as, and PF 6 -, BF 4 -, Cl -, Br -, I-, ClO 4 - , Anions such as ASF 6 - , CH 3 CO 2 - , CF 3 SO 3 - , N (CF 3 SO 2 ) 2 - , C (CF 2 SO 2 ) 3 - (DEC), dimethyl carbonate (DMC), dipropyl carbonate (DPC), dimethyl sulfoxide, acetonitrile (AN), dimethoxyethane, diethoxyethane, An organic solvent selected from the group consisting of tetrahydrofuran, N-methyl-2-pyrrolidone (NMP), ethylmethyl carbonate (EMC), gamma butyrolactone or a mixture thereof may be used. TEABF 4 (tetraethylammonium tetrafluoroborate), TEMABF 4 (triethylmethylammonium tetrafluoroborate), LiClO 4 (lithium perchlor orate, lithium hexafluorophosphate (LiPF 6 ), lithium hexafluoroarsenate (LiAsF 6 ) and lithium tetrafluoroborate (LiBF 4 ), or a mixture of two or more salts thereof.

The electrolytic solution may be used to impregnate or coat the separation membrane 15.

The separator 15 is positioned between the anode 11 and the cathode 13 and electrically insulates them. The separation membrane 15 is not limited to a specific type, but it is preferable to use a porous separation membrane. For example, a pulp system, a polypropylene system, a polyethylene system, or a polyolefin system porous separation membrane may be used.

The electrode element 10 is formed by laminating a separator 15 on both surfaces of an anode 11, a cathode 13, between an anode 11 and a cathode 13, or between an anode 11 and a cathode 13, do. That is, the electrode element 10 according to the first embodiment of the present invention can be wound and formed into a cylindrical shape.

The electrode element 10 includes a pair of electrode terminals 20 protruding from the upper side of the electrode element 10. The pair of electrode terminals 20 can be divided into a first electrode terminal 30 and a second electrode terminal 40. The pair of electrode terminals 20 are connected to the positive electrode 11 and the negative electrode 12, It connects with power.

The first electrode terminal 30 includes a first connection portion 31 connected to the anode 11, a first electrode tab 35 composed of a first round portion 33 connected to the first connection portion 31, And a first external connection portion 37 welded to the first portion 33. The second electrode terminal 40 includes a second connection portion 41 connected to the cathode 13, a second electrode tab 45 composed of a second round bar portion 43 connected to the second connection portion 41, And a second external connection portion 47 welded to the round bar portion 43.

At this time, the first electrode terminal 30 and the second electrode terminal 40 can be made of one material of aluminum steel or stainless steel, and the surface can be coated with nickel or tin.

The case 50 is formed with an opening portion at the top, and the electrode element 10 is embedded through the opening portion. Not only the electrode elements 10 but also the gas generated in the electrode elements 10 are present in the case 50. The material of the case 50 is aluminum or aluminum alloy which is light in weight, Can be used.

The case 50 includes a fixing portion 51 which is formed by depressing the side surface which is in contact with the rubber cap 60, which will be described later, by an external pressure. The fixing portion 51 is a portion which is inserted through the opening portion of the case 50 and then deformed concavely inward by the external pressure so that the case 50 and the rubber cap 60 ) Are closely contacted to perform primary sealing. Also, after the rubber cap 60 is inserted into the case 50, the case end 53 may be deformed into a hook shape, and the hook shape may be formed so as to be spaced apart from the rubber cap 60.

The case 5 may be formed in a cylindrical shape and the maximum diameter? 1 is 18.1 mm 占 0.1, the diameter? 2 of the portion where the fixing portion 51 is formed is 16.3 mm 占 0.1, (H 1 ) is 40.7 mm ± 0.05, and the height (H 2 ) from the fixing portion 51 to the upper portion of the case is 3.8 mm ± 0.1.

However, the case 50 is not limited to a cylindrical shape but may be formed in a shape corresponding to the shape of the electrode element 10. [ In other words, when the electrode element 10 is cylindrical, the case 50 is also cylindrical, and when the electrode element 10 is polygonal, the case 50 may also be polygonal. However, the technical idea of the present invention is not limited to this, and when the electrode element 10 is cylindrical, the case 50 may be polygonal, and when the electrode element 10 is polygonal, May be cylindrical.

The rubber cap (60) is coupled inside the upper portion of the opening portion to seal the case (20). That is, the rubber cap 60 is sealed in the inside of the case 20, so that the inside and the outside of the electrode element 10 can be cut off.

The rubber cap 60 may be made of an elastic rubber material. As the rubber material, for example, olefinic synthetic rubbers such as ethylene propylene copolymer (EPT) and ethylene propylene diene copolymer (EPDM), silicone rubber, fluorine rubber, butyl rubber and the like can be used.

The rubber cap 60 is formed with a first through hole 61 and a second through hole 63 so as to be fitted to the first electrode terminal 30 and the second electrode terminal 40, respectively. That is, the rubber cap 60 may be installed on the upper portion of the electrode element 10 through the first through hole 61 and the second through hole 63. Therefore, the rubber cap 60 and the electrode element 10 can be installed at a distance of 0.4 mm to 10 mm. Thus, the rubber cap 60 can suppress the generation of foreign matter on the surface.

That is, since the electrochemical energy storage device 100 is installed with a distance between the rubber cap 60 and the electrode element 10, even if the electrochemical energy storage device 100 is used for a long time, no foreign matter is generated, and the lifetime can be increased.

As described above, the electrochemical energy storage device 100 is installed at a distance of 0.4 mm to 10 mm between the rubber cap 60 and the electrode element 10. If the spacing distance is shorter than 0.4 mm, When the chemical energy storage device 100 is used for a long time, foreign matter is generated on the surface of the rubber cap 60 or the lifetime thereof is shortened quickly. If the separation distance is further than 10 mm, the energy density of the electrochemical energy storage device 100 is lowered do.

The polymer resin 70 is formed so that the opening end 53 is locked on the upper surface of the rubber cap 60. Therefore, the polymer resin 70 can prevent the liquid leakage phenomenon in which the electrolyte leaks to the outside by performing the secondary sealing of the case 50. Particularly, the polymer resin 70 may be formed so as to cover the open end 53 and finish the case end 53 at the same time.

The polymer resin 70 may be made of a polymer resin having excellent mechanical properties and heat resistance, and may preferably be made of an epoxy resin.

An epoxy resin is a thermosetting resin produced by polymerization of a dendritic substance and an epoxy group having an epoxy group in a molecule and has excellent mechanical properties such as bending strength and hardness and has no generation of volatile substances and no shrinkage in volume at the time of curing, And has a large adhesive force on the surface.

Particularly, the polymer resin 70 may be at least one selected from the group consisting of bisphenol A type epoxy resin, bisphenol F type epoxy resin, phenol novolak type epoxy resin, cresol novolak type epoxy resin, hydrogenated bisphenol A type epoxy resin, BPA-novolak-type epoxy resin, cycloaliphatic epoxy resin, or a mixture thereof.

3 is a flowchart illustrating a method of manufacturing an electrochemical energy storage device according to an embodiment of the present invention.

Referring to FIGS. 1 to 3, the electrochemical energy storage device 100 can prevent the leakage of the liquid by sealing the rubber cap 60 and the polymer resin 70 in the opening part of the case with a double seal.

In step S10, the electrode element 10 is prepared. The electrode element 10 stores electrochemical energy, and converts electrical energy into chemical energy or chemical energy into electrical energy. The electrode element 10 may be an electrolytic capacitor having an electric capacity of several tens to several hundreds of volts, a supercapacitor having a capacitance of several Farads, an electric double layer capacitor having an electric capacity of 100 F or more, a lithium ion capacitor, etc. . The electrode element 10 may have a cylindrical shape or may have a rectangular prism shape such as a quadrangular prism, a pentagonal prism, and a hexagonal prism. The electrode element 10 includes an anode 11, a cathode 13, a separator 15, and an electrolytic solution.

Then, in step S11, the electrode element 10 is embedded in the case 50 having the open part through the open part. The case 50 may be made of aluminum or an aluminum alloy which is light in weight but has little effect of corrosion due to gas or the like. The case 50 generally has a shape corresponding to the shape of the electrode element 10.

Next, in step S12, a rubber cap 60 is formed on the electrode element 10. The rubber cap 60 may be made of an elastic rubber material.

Then, in step S13, the side surface of the case 50 which contacts the rubber cap 60 and the opening end 53 are deformed. The case 50 deforms by pushing inward the side contacting the rubber cap 60. As a result, the case 50 and the rubber cap 60 are brought into close contact with each other to perform primary sealing. In addition, the case 50 bends the opening end 53 in the shape of a hook. At this time, the open end 53 may be spaced apart from the rubber cap 60.

Next, in step S14, the polymer resin 70 is formed on the rubber cap 60 so that the opening end 53 is locked. The polymer resin 70 performs secondary sealing of the case 50. In particular, the polymer resin 70 may be formed so as to cover the open end 53 and finish the case end 53 at the same time. The polymer resin 70 may be made of a polymer resin having excellent mechanical properties and heat resistance, and may preferably be made of an epoxy resin.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is clearly understood that the same is by way of illustration and example only and is not to be taken by way of limitation in the embodiment in which said invention is directed. It will be understood by those skilled in the art that various changes in form and detail may be made therein without departing from the scope of the appended claims.

10: electrode element 11: anode
13: cathode 15: separator
20: electrode terminal 30: first terminal
31: first connecting portion 33: first round bar
35: first electrode tab 37: first external connection
40: second terminal 41: second connection part
43: second round bar 45: second electrode tab
47: second external connection part 50: case
51: Fixed portion 53: Case end
60: Rubber cap 61: First through hole
63: second through hole 70: polymer resin
100: Electrochemical energy storage device

Claims (4)

An electrode element for storing electrochemical energy;
A pair of electrode terminals protruding from the upper portion of the electrode element;
A case in which an opening is formed in an upper portion and the electrode element is embedded through the opening;
A rubber cap formed with a pair of through-holes through which the pair of electrode terminals pass, and spaced apart from the electrode elements; And
A polymer resin which is formed on an upper surface of the rubber cap so as to lock the end of the opening and seals the case;
And an electrochemical energy storage device. The method according to claim 1,
In this case,
Wherein the side surface in contact with the rubber cap is depressed inwardly and the end of the opening is formed in a shape of a hook and spaced apart from the rubber cap. The method according to claim 1,
Wherein the polymer resin is an epoxy resin. Preparing an electrode element for storing electrochemical energy;
Embedding the electrode element through the opening in a case having an opening at an upper end thereof;
Forming a rubber cap which is an elastic material so as to be spaced apart from an upper portion of the electrode element;
Deforming a side surface of the case, which is in contact with the rubber cap, and an end of the opening; And
Forming a polymeric resin on an upper surface of the rubber cap so that an end of the opening is locked;
≪ / RTI >
KR1020150177160A 2015-12-11 2015-12-11 Electrochemical energy storage device and manufacturing method thereof KR20170070339A (en)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20190081277A (en) * 2017-12-29 2019-07-09 비나텍주식회사 Manufacture method of series-connected capacitor module having half case
KR20190081276A (en) * 2017-12-29 2019-07-09 비나텍주식회사 Series-connected capacitor module having half case
WO2019190739A1 (en) * 2018-03-26 2019-10-03 Nesscap Co., Ltd. Flexible closure for energy storage device and energy storage device including the same

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20190081277A (en) * 2017-12-29 2019-07-09 비나텍주식회사 Manufacture method of series-connected capacitor module having half case
KR20190081276A (en) * 2017-12-29 2019-07-09 비나텍주식회사 Series-connected capacitor module having half case
WO2019190739A1 (en) * 2018-03-26 2019-10-03 Nesscap Co., Ltd. Flexible closure for energy storage device and energy storage device including the same
US11380952B2 (en) 2018-03-26 2022-07-05 Maxwell Technologies Korea Co., Ltd. Flexible closure for energy storage device and energy storage device including the same

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