KR20000025359A - Apparatus for impregnating an electrolysis of lithium ion polymer battery - Google Patents
Apparatus for impregnating an electrolysis of lithium ion polymer battery Download PDFInfo
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- KR20000025359A KR20000025359A KR1019980042401A KR19980042401A KR20000025359A KR 20000025359 A KR20000025359 A KR 20000025359A KR 1019980042401 A KR1019980042401 A KR 1019980042401A KR 19980042401 A KR19980042401 A KR 19980042401A KR 20000025359 A KR20000025359 A KR 20000025359A
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- H—ELECTRICITY
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- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/05—Accumulators with non-aqueous electrolyte
- H01M10/056—Accumulators with non-aqueous electrolyte characterised by the materials used as electrolytes, e.g. mixed inorganic/organic electrolytes
- H01M10/0564—Accumulators with non-aqueous electrolyte characterised by the materials used as electrolytes, e.g. mixed inorganic/organic electrolytes the electrolyte being constituted of organic materials only
- H01M10/0565—Polymeric materials, e.g. gel-type or solid-type
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/05—Accumulators with non-aqueous electrolyte
- H01M10/052—Li-accumulators
- H01M10/0525—Rocking-chair batteries, i.e. batteries with lithium insertion or intercalation in both electrodes; Lithium-ion batteries
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- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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Abstract
Description
본 발명은 리튬이온 폴리머전지를 제조하는 장치에 관한 것으로, 특히 전극에 전해질을 코팅하고 적층한 다음 이 적층면에 기게적인 방법으로 초음파나 임펄스 등을 가해 전해질이 전극표면에 고르게 분산되면서 전극내부로 용이하게 함침되도록 함으로써 고성능의 전지를 제조할 수 있도록 된 리튬이온 폴리머전지 전해질 함침장치에 관한 것이다.The present invention relates to a device for manufacturing a lithium-ion polymer battery, and in particular, by coating and laminating an electrolyte on an electrode, and then applying ultrasonic waves or impulses in a mechanical manner to the laminated surface, the electrolyte is evenly dispersed on the electrode surface and into the electrode. The present invention relates to a lithium ion polymer battery electrolyte impregnation device capable of easily impregnating a battery of high performance.
최근 기술이 발달되면서 이용이 편리한 각종 휴대용 전자기기들의 개발이 활발하게 추진되고 있는 바, 이로 인해 각종 휴대용 전자기기의 구동전원인 전지의 중요성이 한층 높아지고 있다.With the recent development of technology, the development of various portable electronic devices that are easy to use is being actively promoted, and thus, the importance of a battery, which is a driving power source of various portable electronic devices, is further increased.
한편 현재 충전과 방전이 가능한 2차전지로는 니켈-카드뮴(Ni-Cd)과 니켈-메탄계(Ni-MH) 및 리튬이온전지등이 가장 널리 사용되고 있는 바, 이 중에서도 특히 리튬이온전지는 다른 전지와 비교하여 작동전압이 3.7V가량 높고 에너지밀도도 상대적으로 높기 때문에 가장 많이 사용되고 있다.On the other hand, nickel-cadmium (Ni-Cd), nickel-methane-based (Ni-MH), and lithium ion batteries are the most widely used secondary batteries that can be charged and discharged. Compared with the operating voltage of about 3.7V and the energy density is also relatively high because it is the most used.
그런데 이 리튬이온전지는 내부단락이나 외부단락, 과층전 및 과방전 등의 이상현상이 발생하는 경우 전지내부의 전지내부의 온도가 상승하여 전해액으로 사용되는 유기용매가 발화될 수 있다는 위험이 있다.However, this lithium ion battery has a risk that an internal solvent, an external short circuit, an over-discharge, or an overdischarge may cause an organic solvent used as an electrolyte to ignite due to an increase in the temperature inside the battery.
이에 따라 최근에는 인화성이 상대적으로 적으면서 누액의 염려도 적은 겔(gel)·고체형 고분자 재료로 제조된 전해액을 사용하고, 음극전극재료로는 탄소재료를 사용함으로써 리튬이온전지의 안전성 문제를 해소하는 방안이 개발되고 있는 실정이다.As a result, the safety problem of lithium-ion batteries is solved by using an electrolyte made of a gel-solid polymer material with relatively low flammability and low leakage, and a carbon material as a cathode electrode material. The way to do that is being developed.
그런데 상기와 같이 겔형 폴리머 전해질을 이용하는 리튬이온폴리머전지 역시 제조시 전극내부로 전해질이 골고루 함침되지 않는 문제가 있어 고성능의 전지를 제조하기 어렵다는 결점이 있다.However, as described above, the lithium ion polymer battery using the gel polymer electrolyte also has a problem in that the electrolyte is not evenly impregnated into the electrode during manufacturing, making it difficult to manufacture a high performance battery.
이에 본 발명은 상기와 같은 결점을 해결하기 위하여 발명된 것으로, 한쪽 전극면에 전해액을 코팅하고 나머지 전극면과 겹쳐지도록 한 다음 이송유니트로 통과시키면서 겹쳐진 전극으로 일정 주파수의 기계적인 진동을 규칙적이면서 반복적으로 가해줌으로써, 전극표면과 전극내부에 전해질을 균일하게 분산시켜 고성능의 전지를 제조할 수 있도록 구성된 리튬이온 폴리머전지 전해질 함침장치를 제공함에 그 목적이 있다.Accordingly, the present invention has been invented to solve the above-described drawbacks, coating an electrolyte solution on one electrode surface and overlapping the other electrode surface, and then passing the transfer unit to the overlapping electrodes while regularly and repeatedly transmitting mechanical vibrations of a predetermined frequency. It is an object of the present invention to provide a lithium ion polymer battery electrolyte impregnation apparatus configured to uniformly disperse an electrolyte on an electrode surface and an electrode to produce a high performance battery.
도 1은 본 발명에 따른 리튬이온폴리머전지 전해질 함침장치를 개략적으로 도시한 구성도이다.1 is a schematic view showing a lithium ion polymer battery electrolyte impregnation apparatus according to the present invention.
1 --- 지지브라켓트, 2 --- 상부가압판,1 --- support bracket, 2 --- upper presser plate,
3 --- 하부가압판, 4 --- 가압유니트,3 --- lower presser plate, 4 --- pressurization unit,
5a,5b --- 구동로울러, 6 --- 컨베이어벨트,5a, 5b --- drive rollers, 6 --- conveyor belts,
7a,7b --- 회전로울러, 8 --- 이송유니트,7a, 7b --- rotary roller, 8 --- transfer unit,
9 --- 코팅로울러, 10 --- 저장호퍼,9 --- coating roller, 10 --- storage hopper,
11 --- 전해질, 12 --- 전해질코팅유니트,11 --- electrolyte, 12 --- electrolyte coating unit,
13 --- 양극롤, 14 --- 음극롤,13 --- anode roll, 14 --- cathode roll,
상기와 같은 목적을 달성하기 위한 본 발명은, 1쌍의 구동로울러 및 이 구동로울러와 컨베이어벨트를 매개로 연결된 1쌍의 회전로울러를 구비한 이송유니트와, 상기 컨베이어벨트를 사이에 두고 설치된 지지브라켓트를 매개로 부착되어 규칙적으로 수직왕복운동되는 상부가압판과 이 상부가압판의 아래쪽에 고정설치된 하부가압판을 구비한 가압유니트, 깔때기 형상을 하고서 그 하부에 코팅로울러가 장착된 저장호퍼를 구비하고서 전극면에 전해질을 소정두께로 코팅하는 전해질코팅유니트 및, 상기 이송유니트를 구성하는 1쌍의 구동로울러와 회전로울러의 컨베이어벨트사이로 동일속도로 이송되도록 된 양극롤과 음극롤을 구비한 구조를 이루고 있다.The present invention for achieving the above object, a transfer unit having a pair of drive rollers and a pair of rotary rollers connected via the drive rollers and the conveyor belt, and a support bracket provided with the conveyor belt therebetween. A pressurizing unit having an upper pressurizing plate which is regularly attached and reciprocated vertically, and a lower pressurizing plate fixed to the lower pressurizing plate, and a storage hopper having a funnel shape and having a coating roller mounted thereon. An electrolyte coating unit for coating an electrolyte to a predetermined thickness, and a positive electrode roll and a negative electrode roll to be transported at the same speed between the pair of drive roller and the conveyor belt of the rotary roller constituting the transfer unit.
따라서 상기 구동유니트로 통과될 때 한쪽 전극에 전해질이 코팅된 전극과 전해질이 코팅되지 않은 전극을 서로 맞대어 놓은 다음 가압시키면서 적층면에 소정의 기계적인 진동을 가해주게 되면, 발생되는 초음파 등으로 인하여 전해질이 전극표면과 내부에 골고루 함침되도록 되어 있다.Therefore, when passing through the driving unit, the electrode coated with the electrolyte and the electrode without the electrolyte coated on one electrode, and then pressurized while applying a certain mechanical vibration to the laminated surface, due to the ultrasonic wave generated, etc. The electrode surface and the inside are impregnated evenly.
이하 본 발명을 첨부된 예시도면에 의거 상세히 설명한다.Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.
도 1은 본 발명에 따른 전해질 함침 장치를 개략적으로 도시한 구성도로써, 본 발명에 따른 전해질 함침 장치는 지지브라켓트(1)를 매개로 수평방향으로 부착되어 소정범위내에서 규칙적으로 수직왕복운동하도록 된 상부가압판(2)과 이 상부가압판(2)의 아래쪽에 고정설치된 하부가압판(3)을 구비한 가압유니트(4)와, 이 가압유니트(4)의 좌우측 상하부에 각각 고정설치된 1쌍의 구동로울러(5a,5b) 및 이 구동로울러(5a,5b)와 컨베이어벨트(6)를 매개로 연결된 1쌍의 회전로울러(7a,7b)를 구비한 이송유니트(8), 깔때기 형상을 하고서 그 하부에 코팅로울러(9)가 장착된 저장호퍼(10)를 구비하고서 전극면에 전해질(11)을 소정두께로 코팅하게 되는 전해질코팅유니트(12) 및, 상기 이송유니트(8)를 구성하는 1쌍의 구동로울러(5)와 회전로울러(7)의 컨베이어벨트(6)사이로 동일속도로 이송되도록 된 양극롤(13)과 음극롤(14)을 구비한 구조로 되어 있으며, 상기 양극롤(13)은 알루미늄집전체에 양극 활물질이 코팅되어 감긴 형태이고 음극롤(14)은 구리 집전체에 음극 활물질이 코팅되어 감긴 형태로 되어 있다.1 is a configuration diagram schematically showing an electrolyte impregnation device according to the present invention, the electrolyte impregnation device according to the present invention is attached to the horizontal direction via a support bracket (1) so as to regularly vertical reciprocating movement within a predetermined range A pair of drive units each having a fixed upper press plate 2, a lower press plate 3 fixed to the lower side of the upper press plate 2, and a left and right upper and lower sides of the press unit 4, respectively. Transfer unit 8 having rollers 5a and 5b and a pair of rotary rollers 7a and 7b connected via driving rollers 5a and 5b and conveyor belt 6, having a funnel shape and lower part thereof A pair of constituting an electrolyte coating unit 12 having a storage hopper 10 having a coating roller 9 mounted thereon and coating the electrolyte 11 to a predetermined thickness on an electrode surface, and the transfer unit 8. Between the driving roller (5) and the conveyor belt (6) of the rotary roller (7). The positive electrode roll 13 and the negative electrode roll 14 to be transported at the same speed is provided, the positive electrode roll 13 is a form in which a positive electrode active material is coated and wound on an aluminum current collector and the negative electrode roll 14 is The negative electrode active material is coated and wound on the copper current collector.
따라서 상기 구동로울러(5a,5b)를 회전시키면서 전해질코팅유니트(12)를 구동시키게 되면 저장호퍼(10)에 담겨진 전해질이 흘러내려와 코팅로울러(9)를 매개로 눌려져 음극에 전해질이 코팅되게 되고, 이 같이 코팅된 음극이 양극과 맞대어진 형태로 구동로울러(5a,5b)와 회전로울러(7a,7b)사이에 감겨진 컨베이어벨트(6)로 진입되면 구동로울러(5a,5b)에 의하여 일정압력으로 가압되면서 컨베이어벨트(6)의 이송방향으로 전극을 이송시키게 된다.Accordingly, when the electrolyte coating unit 12 is driven while rotating the driving rollers 5a and 5b, the electrolyte contained in the storage hopper 10 flows down and is pressed through the coating roller 9 to coat the electrolyte on the negative electrode. When the coated cathode enters the conveyor belt 6 wound between the driving rollers 5a and 5b and the rotating rollers 7a and 7b in a form in which the coated cathode is opposed to the positive electrode, a predetermined pressure is applied by the driving rollers 5a and 5b. While being pressed to convey the electrode in the conveying direction of the conveyor belt (6).
그리고 맞대어진 상태로 이송되는 전극은 컨베이어벨트(6)에 의하여 기계적인 보호를 받게 되고, 컨베이어벨트(6)를 사이에 두고 장착된 가압유니트(4)의 반복동작으로 인하여 일정한 주파수의 기계적 진동이나 초음파 또는 임펄스중의 하나를 가해주게 되며, 이렇게 함으로써 맞대어진 전극사이로 이미 코팅되어져 있는 전해질이 전극표면으로 균일하게 함침되게 되는데, 이 때 전극은 이송유니트(8)의 컨베이어벨트(6)에 의하여 일정하게 장력이 유지된 상태에서 눌려진 상태로 이송방향을 따라 이동되게 되므로 편평하게 펴지게 된다.And the electrode transported in the butted state is subjected to mechanical protection by the conveyor belt (6), due to the repeated operation of the pressurizing unit (4) mounted with the conveyor belt (6) in between the mechanical vibration of a constant frequency or Either ultrasonic waves or impulses are applied, so that the electrolyte, which is already coated between the opposing electrodes, is uniformly impregnated into the electrode surface, at which time the electrodes are fixed by the conveyor belt 6 of the transfer unit 8. Since the tension is maintained in the pressed state is moved along the conveying direction is flattened.
이하 본 발명을 실시예에 의거 더욱 상세히 설명하면 다음과 같다.Hereinafter, the present invention will be described in more detail with reference to Examples.
양극은 활물질인 리튬 망가니즈 옥사이드(LiMn2O4)와 도전재인 카본(Carbon) 및 결합재(에컨대 폴리비닐덴플로라이드:PVDF)를 1-메틸-2-피롤리디논(1-Methyl-2- Pyrrolidinone)용매와 혼합하여 슬러리를 만들고, 이를 집전체인 알루미늄 호일위에 양면 코팅한 다음 건조과정을 거쳐 제조하였다.The positive electrode is composed of lithium manganese oxide (LiMn 2 O 4) , an active material, carbon (carbon) and a binder (eg, polyvinyl denfluoride: PVDF) as a conductive material, and 1-methyl-2-pyrrolidinone (1-Methyl-2). Pyrrolidinone) was mixed with a solvent to make a slurry, which was coated on both sides of an aluminum foil as a current collector and then dried.
그리고 음극은 활물질인 카본과 결합재를 1-메틸-2-피롤리디논 용매와 혼합하여 슬러리를 만들고, 이를 집전체인 구리호일 위에 양면 코팅한 다음 건조하여 제조하였다.The negative electrode was prepared by mixing carbon as an active material and a binder with a 1-methyl-2-pyrrolidinone solvent to make a slurry, and coating both surfaces on a copper foil as a current collector and then drying.
또한 이들 양극과 음극은 슬러리가 코팅되지 않은 무지부를 폭 1㎝로, 슬러리가 코팅된 전극면을 폭 4㎝가 되도록 하고, 양극과 음극의 무지부의 방향이 반대가 되도록 하였다.In addition, the positive electrode and the negative electrode were made to have a width of 1 cm without the slurry-coated non-coated portion, the electrode surface coated with the slurry to a width of 4 cm, and the opposite direction of the plain portions of the positive electrode and the negative electrode.
이후, 상기 양극과 음극에 일정압력을 파우더브레이크에 의해 인가할 수 있는 풀림롤에 미끄러지지 않도록 걸고 전극의 끝부분을 이송유니트(8)를 통과하도록 하면서 상기 컨베이어벨트(6)내를 통과할 때 일정시간동안 정지되도록 하여 이 정지되는 시간동안 상기 상부가압판(2)을 수직왕복시키게 되면 일정 주파수를 갖는 기계적 진동이 전극으로 전달되게 되는 바, 여기서 상기 기계적 진동은 전해질의 특성에 따라 결정되도록 되어 있다.Thereafter, a predetermined pressure is applied to the anode and the cathode so as not to slip on the unwinding roll that can be applied by the powder brake, and the end of the electrode passes through the transfer unit 8 while passing through the conveyor unit 6. When the upper pressure plate 2 is vertically reciprocated during the stopped time by stopping for a time, mechanical vibration having a predetermined frequency is transmitted to the electrode, where the mechanical vibration is to be determined according to the characteristics of the electrolyte.
이와 같이 전극이 배치되면 풀림속도가 일정한 음극면에 폴리머재질의 전해질이 소정두께로 일정하게 코팅된 상태로 양극과 겹쳐지게 된다. 이 같이 겹쳐진 전극은 이송유니트(8)에 의해 일정한 장력을 유지한 상태로 이송되게 되고, 이송유니트(8)의 컨베이어벨트(6)에 의하여 편평하게 펴지게 되며 가압유니트(4)의 기계적인 충격으로 부터 보호받게 되므로 충격을 완화시키기 위한 별도의 장치를 설치할 필요가 없게 된다.When the electrode is disposed as described above, the polymer electrolyte is uniformly coated with a predetermined thickness on the negative electrode surface of which the release rate is constant to overlap the positive electrode. The overlapping electrodes are transferred in a state of maintaining a constant tension by the transfer unit 8, and are flattened by the conveyor belt 6 of the transfer unit 8, and the mechanical impact of the pressure unit 4 is increased. Protected from the need to install a separate device to mitigate the impact.
한편, 본 발명은 상기에서 언급된 실시예에 한정되지 않고 당해 발명이 속하는 분야에서 통상의 지식을 가진 자라면 누구든지 다양한 변경/실시가 가능함은 물론이다.On the other hand, the present invention is not limited to the above-mentioned embodiment, anyone of ordinary skill in the art to which the invention belongs, it is a matter of course that various changes / implementation is possible.
이상에서 설명한 바와 같이 본 발명 리튬이온 폴리머전지 전해질 함침장치에 따르면, 전해액을 원할하게 함침시키는 동작이 연속적으로 수행되도록 되어 있어 상용화시킬 수 있고, 전극에 기계적인 힘을 적용시킬 때 컨베이어벨트에 의하여 전극을 보호할 수 있게 되므로 전극이 손상될 위험이 적고 균일한 힘을 전극으로 전달할 수 있어 양질의 전지를 제조할 수 있는 잇점이 있다.According to the lithium ion polymer battery electrolyte impregnation device of the present invention as described above, the operation of smoothly impregnating the electrolyte solution is to be carried out to be commercialized, the electrode by the conveyor belt when applying a mechanical force to the electrode Since it is possible to protect the risk of damaging the electrode and can transmit a uniform force to the electrode has the advantage of manufacturing a good quality battery.
Claims (3)
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| Application Number | Priority Date | Filing Date | Title |
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| KR1019980042401A KR20000025359A (en) | 1998-10-10 | 1998-10-10 | Apparatus for impregnating an electrolysis of lithium ion polymer battery |
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| KR1019980042401A KR20000025359A (en) | 1998-10-10 | 1998-10-10 | Apparatus for impregnating an electrolysis of lithium ion polymer battery |
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| Publication Number | Publication Date |
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| KR20000025359A true KR20000025359A (en) | 2000-05-06 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20170118452A (en) * | 2016-04-15 | 2017-10-25 | 주식회사 엘지화학 | Electrolyte impregnation apparatus |
| CN115084657A (en) * | 2021-03-15 | 2022-09-20 | 本田技研工业株式会社 | Method and apparatus for manufacturing battery member |
| WO2023128652A1 (en) * | 2021-12-30 | 2023-07-06 | 주식회사 솔룸신소재 | Lithium rolling apparatus and lithium rolling method using same |
-
1998
- 1998-10-10 KR KR1019980042401A patent/KR20000025359A/en not_active Application Discontinuation
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20170118452A (en) * | 2016-04-15 | 2017-10-25 | 주식회사 엘지화학 | Electrolyte impregnation apparatus |
| WO2017179831A3 (en) * | 2016-04-15 | 2018-04-05 | 주식회사 엘지화학 | Device for pouring electrolyte |
| US10511011B2 (en) | 2016-04-15 | 2019-12-17 | Lg Chem, Ltd. | Electrolyte impregnation apparatus |
| CN115084657A (en) * | 2021-03-15 | 2022-09-20 | 本田技研工业株式会社 | Method and apparatus for manufacturing battery member |
| WO2023128652A1 (en) * | 2021-12-30 | 2023-07-06 | 주식회사 솔룸신소재 | Lithium rolling apparatus and lithium rolling method using same |
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