KR100537607B1 - Folding type electrode assembly and secondary battery with the same - Google Patents
Folding type electrode assembly and secondary battery with the same Download PDFInfo
- Publication number
- KR100537607B1 KR100537607B1 KR10-1999-0036252A KR19990036252A KR100537607B1 KR 100537607 B1 KR100537607 B1 KR 100537607B1 KR 19990036252 A KR19990036252 A KR 19990036252A KR 100537607 B1 KR100537607 B1 KR 100537607B1
- Authority
- KR
- South Korea
- Prior art keywords
- electrode
- folding
- negative electrode
- positive electrode
- secondary battery
- Prior art date
Links
Classifications
-
- 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
- H01M10/04—Construction or manufacture in general
- H01M10/045—Cells or batteries with folded plate-like electrodes
- H01M10/0454—Cells or batteries with electrodes of only one polarity folded
-
- 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
- H01M10/04—Construction or manufacture in general
- H01M10/0431—Cells with wound or folded electrodes
-
- 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
- H01M10/058—Construction or manufacture
- H01M10/0583—Construction or manufacture of accumulators with folded construction elements except wound ones, i.e. folded positive or negative electrodes or separators, e.g. with "Z"-shaped electrodes or separators
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/50—Current conducting connections for cells or batteries
- H01M50/531—Electrode connections inside a battery casing
- H01M50/538—Connection of several leads or tabs of wound or folded electrode stacks
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/50—Current conducting connections for cells or batteries
- H01M50/543—Terminals
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/50—Current conducting connections for cells or batteries
- H01M50/572—Means for preventing undesired use or discharge
- H01M50/574—Devices or arrangements for the interruption of current
- H01M50/578—Devices or arrangements for the interruption of current in response to pressure
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M2200/00—Safety devices for primary or secondary batteries
- H01M2200/20—Pressure-sensitive devices
-
- 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
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
-
- 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
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Secondary Cells (AREA)
Abstract
목적 : 롤 상의 권취 구조로 인해 발생하는 부피 변화 및 변형을 방지하여, 전지의 성능과 수명 특성을 향상시키는 폴딩형 전극군 및 이를 이용한 이차전지를 제공한다.PURPOSE: To provide a folding type electrode group and a secondary battery using the same, which prevents volume change and deformation caused by a winding structure on a roll, thereby improving battery performance and lifespan characteristics.
구성 : 병풍구조를 갖는 부극(24)을 형성하고, 상기 병풍구조의 사이마다 단판으로 된 정극(22)을 삽입하되 각각의 정극을 리이드(22a)를 이용하여 전기적으로 연결하며, 상기 정극과 부극의 사이마다 세퍼레이터(26)를 삽입하여 폴딩형 전극군을 형성한다. 또 상기 폴딩형 전극군과 함께 전해액을 수납하는 캔(6)과, 상기 캔의 개구에 결합 밀봉되는 것으로 외부 인출단자(8a)를 구비하는 캡 플레이트(8)를 포함하며, 상기 정극 혹은 부극 중에서 한 전극을 상기 캔과 전기적으로 연결하고, 나머지 한 전극을 외부 인출단자와 전기적으로 연결하여 이차전지를 구성한다.Structure: A negative electrode 24 having a folding structure is formed, and a positive electrode 22 made of a single plate is inserted between the folding structures, and each of the positive electrodes is electrically connected using the lead 22a. The positive electrode and the negative electrode are electrically connected. The separator 26 is inserted in between to form the folding electrode group. And a can plate 6 containing an electrolyte solution together with the folding electrode group, and a cap plate 8 having an outer lead terminal 8a coupled to and sealed by an opening of the can, among the positive electrode and the negative electrode. One electrode is electrically connected to the can, and the other electrode is electrically connected to an external lead terminal to form a secondary battery.
효과 : 상기한 전극군은 복원력이 제거되므로 스웰링 및 변형이 방지되는 것이며, 활물질의 탈락 및 열화가 방지되어서 전지의 성능과 수명을 향상시킨다.Effect: The electrode group prevents swelling and deformation since the restoring force is removed, and the dropping and deterioration of the active material is prevented, thereby improving the performance and life of the battery.
Description
본 발명은 전극군의 부피 변화에 따른 전지의 변형을 억제하고 수명 향상을 실현할 수 있도록 하며, 박형화를 가능하게 하는 폴딩형 전극군 및 이를 이용한 이차전지에 관한 것이다.The present invention relates to a folding-type electrode group and a secondary battery using the same, which can suppress deformation of a battery due to a volume change of the electrode group and realize an improvement in life, and enable thinning.
이차전지는 충·방전이 가능한 것으로, 외관상 원통형과 각형으로 구분되고 양극 및 음극 물질에 따라 니켈-수소(Ni-MH) 전지, 리튬(Li) 전지, 리튬이온(Li-ion) 전지 등으로 구분되고 있다.Secondary batteries are capable of charging and discharging, and are divided into cylindrical and rectangular in appearance, and are classified into nickel-hydrogen (Ni-MH) batteries, lithium (Li) batteries, and lithium-ion (Li-ion) batteries according to positive and negative electrode materials. It is becoming.
도 6은 종래 공지된 각형 이차전지를 보여주고 있다. 도면에서와 같이 정극과 세퍼레이터 및 부극이 함께 롤 상으로 권취 및 압착된 전극군(2)은 스프링(4)을 개재하여 캔(6) 내부로 수납되고, 그 캔(6)의 상부에는 안전장치를 포함하는 캡 플레이트(8)가 설치되어서, 캡 플레이트(8) 상에 형성된 주입구(10)를 통해 액체 전해질을 주입한 후 플러그를 막아 밀봉되어진다.6 illustrates a conventionally known square secondary battery. As shown in the drawing, the electrode group 2 in which the positive electrode, the separator, and the negative electrode are wound and compressed together in a roll is accommodated into the can 6 via a spring 4, and a safety device is placed on the upper part of the can 6. Cap plate 8 including a is installed, the liquid electrolyte is injected through the injection hole 10 formed on the cap plate 8 is sealed by plugging.
여기서 정극 및 부극과 같은 전극은 종류에 따라 다소 차이가 있지만 통상적으로 기재에 활물질을 도포 및 충전하여 제조한다. 이렇게 제조된 정극 및 부극은 사이에 세퍼레이터를 개재하고 맨드렐을 이용하여 원형에 가까운 형태로 권취한 후, 도면과 같은 형태로 압착하여 각형 캔(6)의 내부로 수납되어진다.Here, the electrode such as the positive electrode and the negative electrode is slightly different depending on the type, but is usually prepared by applying and filling the active material on the substrate. The positive electrode and the negative electrode thus produced are wound in a shape close to a circle by using a mandrel with a separator interposed therebetween, and then compressed in a shape as shown in the figure to be stored inside the rectangular can 6.
그러나 상기한 전극군(2)은 롤의 권취 구조상 복원력에 의해 반발하게 되고, 전지의 충·방전시 반복되는 팽창 및 수축에 의해 스웰링(swelling)하게 되며, 그 부피 변화에 의해 활물질이 탈락되거나 열화되고, 또한 부반응을 촉발시켜 전지의 성능을 저하시키게 된다.However, the electrode group 2 is repulsed by the restoring force due to the winding structure of the roll, and swelled by repeated expansion and contraction when the battery is charged and discharged, and the active material is dropped by the volume change. It degrades and also triggers side reactions, which degrades the performance of the battery.
이러한 점을 고려하여 종래에는 전극군(2)과 캔(6)의 사이에 스프링(4)을 삽입하고 있으나, 전극군(2)의 팽창, 수축시 캔(4)도 함께 변형하므로 그 효과가 미미한 정도에 머물고 있다.Considering this point, conventionally, the spring 4 is inserted between the electrode group 2 and the can 6, but the can 4 is also deformed when the electrode group 2 is expanded or contracted. It is staying insignificant.
또한 종래 공지된 것으로 리튬이온 폴리머전지에서는 정극 및 부극과 같은 전극을 겹쳐 판상 구조로 형성하고 있지만, 이것은 개개의 전극을 세퍼레이터로 인벨럽핑(enveloping)하게 되므로 제조 작업이 번거로운 문제점이 있다.In addition, in the conventionally known lithium ion polymer battery, electrodes such as a positive electrode and a negative electrode are overlapped to form a plate-like structure. However, since the individual electrodes are enveloped with a separator, there is a troublesome manufacturing operation.
앞서 설명한 종래 기술의 문제점을 해소하기 위한 것으로서, 본 발명은 롤 상의 권취 구조로 인해 발생하는 복원력과 그에 따른 부피 변화 및 변형을 억제하여 전지 성능과 수명을 향상시키고, 아울러 박형화를 실현할 수 있도록 함에 그 목적을 두고 있다.In order to solve the problems of the prior art described above, the present invention is to restrain the restoring force caused by the winding structure on the roll and the resulting volume change and deformation to improve battery performance and life, and also to realize a thinner The purpose is to.
이를 위하여 본 발명에서는 지그재그로 접혀지고 겹쳐져 적층되는 폴딩(folding)형 전극군을 제안한다. 보다 구체적으로 상기 전극군은 병풍구조를 갖는 부극을 형성하고, 상기 병풍구조의 사이마다 단판으로 된 정극을 삽입하되 각각의 정극을 리이드를 이용하여 전기적으로 연결하며, 상기 정극과 부극의 사이마다 세퍼레이터를 삽입 설치하여 절연한 구성으로 이루어진다.To this end, the present invention proposes a folding electrode group folded and stacked in a zigzag manner. More specifically, the electrode group forms a negative electrode having a folding structure, and inserts a positive electrode made of a single plate between each of the folding structures, and electrically connects each of the positive electrodes using a lead, and separators between the positive electrode and the negative electrode. It is made of an insulated configuration by inserting it.
또한 본 발명에서는 상기한 구성의 폴딩형 전극군을 이용하여 제조한 이차전지를 제안한다. 즉 상기 이차전지는 폴딩형 전극군과 함께 전해액을 수납하는 캔과, 상기 캔의 개구에 결합 밀봉되는 것으로 외부 인출단자를 구비하는 캡 플레이트를 포함하며, 상기 정극 혹은 부극 중에서 한 전극을 상기 캔과 전기적으로 연결하고, 나머지 한 전극을 외부 인출단자와 전기적으로 연결하여 구성한다.In addition, the present invention proposes a secondary battery manufactured using the folding electrode group having the above-described configuration. That is, the secondary battery includes a can plate accommodating an electrolyte solution together with a folding electrode group, and a cap plate having an external lead terminal coupled to and sealed to an opening of the can, wherein the electrode includes one electrode of the positive electrode or the negative electrode. It is electrically connected, and the other electrode is electrically connected with the external lead-out terminal.
이와 같은 구성에 따라 본 발명의 폴딩형 전극군은 종래의 권취 구조와 달리 복원력이 제거되고, 그 결과 부피 변화 및 변형을 억제할 수 있다. 또한 상기한 폴딩형 전극군을 채용한 이차전지는 활물질의 탈락 및 열화를 방지할 수 있어 전지의 성능과 수명을 향상시킬 수 있게 된다. According to such a structure, unlike the conventional winding structure, the folding type electrode group of the present invention can remove the restoring force, and as a result, it is possible to suppress the volume change and deformation. In addition, the secondary battery employing the folding electrode group can prevent the active material from falling off and deteriorating, thereby improving the performance and life of the battery.
이하, 본 발명을 실현하기 위한 실시예를 첨부 도면에 의거하여 보다 상세하게 설명한다.EMBODIMENT OF THE INVENTION Hereinafter, the Example for implementing this invention is demonstrated in detail based on an accompanying drawing.
참고로 본 발명에서는 일 예로서 각형 케이스 구조를 가지며, 리튬 이온의 이동에 따라 충, 방전이 이루어지도록 하는 이차전지에 대하여 설명하고 있으며, 종래 기술과 동일한 구성에 대하여는 설명의 명료성을 위해 동일 부호를 사용하기로 한다.For reference, the present invention describes a secondary battery having a rectangular case structure as an example, and charging and discharging is performed according to the movement of lithium ions. The same components as in the prior art are denoted by the same reference numerals for clarity. I will use it.
도 1은 본 발명에 의한 이차전지의 전체 구조이며, 도 2는 본 발명의 이차전지를 횡 방향으로 절취한 상태의 내부 전극군의 구조를 보여주고 있다.1 is an overall structure of a secondary battery according to the present invention, and FIG. 2 illustrates a structure of an internal electrode group in a state in which the secondary battery of the present invention is cut in the lateral direction.
도면에서와 같이 본 발명의 이차전지는 외관상 각형 구조의 캔(6)과 그 상측 개구에 용접 결합되는 캡 플레이트(8)로 구성된다.As shown in the figure, the secondary battery of the present invention is composed of a can 6 having a rectangular structure in appearance and a cap plate 8 welded to an upper opening thereof.
캡 플레이트(8)는 전해액 주입구(10)를 포함하며, 그 주입구(10)를 통해 전해액을 주입한 후 밀봉되어진다.The cap plate 8 includes an electrolyte injection hole 10 and is sealed after injecting the electrolyte solution through the injection hole 10.
캔(6)은 상기 캡 플레이트(8)의 결합 전에 그 내부에 정극(22), 부극(24), 상기 정극과 부극의 사이에 삽입되어 절연하는 세퍼레이터(26)로 된 폴딩형 전극군(20)을 수납하고, 상기 캡 플레이트(8)의 결합 후에 전해액을 주입하므로 구성되는 발전수단을 수납하여 이루어진다.The can 6 is a folding electrode group 20 made of a positive electrode 22, a negative electrode 24, and a separator 26 inserted between the positive electrode and the negative electrode and insulated therein before the cap plate 8 is coupled. ) And the power generation means configured to inject the electrolyte solution after the cap plate 8 is engaged.
본 발명의 특징적인 구성으로 폴딩형 전극군(20)은 종래 롤 상의 권취 구조와 달리, 지그재그로 접어서 겹쳐지게 적층한 병풍구조로 이루어지며, 이것은 권취 구조에 의한 복원력을 제거한 구조이므로 부피 변화 및 변형을 최소의 상태로 억제할 수 있다.In the characteristic configuration of the present invention, the folding electrode group 20 is made of a folding screen structure which is folded and stacked in a zigzag form, unlike a winding structure on a conventional roll. Can be suppressed to a minimum state.
보다 구체적으로 본 발명의 폴딩형 전극군(20)은 먼저 판상의 부극(24)을 지그재그로 접고 겹쳐서 병풍구조를 갖도록 형성한다. 상기 부극(24)의 병풍구조의 사이에는 단판으로 된 정극(22)을 삽입하되 각각의 정극(22)을 리이드(22a)를 이용하여 전기적으로 연결하고, 상기 정극(22)과 부극(24)의 사이에는 'U'자 상으로 된 세퍼레이터(26)를 삽입하여 절연한다.More specifically, the folding electrode group 20 of the present invention is first formed to have a folding structure by folding and laminating the plate-shaped negative electrode 24 in a zigzag manner. The positive electrode 22 made of a single plate is inserted between the folding structures of the negative electrode 24, and the respective positive electrodes 22 are electrically connected using the leads 22a, and the positive electrode 22 and the negative electrode 24 are connected to each other. Insulation is performed by inserting a separator 26 in the shape of a 'U'.
또한 본 발명에서는 폴딩형 전극군(20)의 다른 구조로서 도 3과 같이 인접된 정극(22)을 'U'자 상으로 연결할 수도 있으며, 이때 세퍼레이터(26)는 정극(22)과 부극(24)을 절연하기 위해 인전된 것과 연결되므로 'W'자 상으로 형성되어진다.In addition, in the present invention, as another structure of the folding electrode group 20, adjacent positive electrodes 22 may be connected in a 'U' shape as shown in FIG. 3, and the separator 26 may include the positive electrode 22 and the negative electrode 24. ) Is formed in the shape of 'W' because it is connected to the energized to insulate it.
상기한 부극(24)은 병풍 구조를 보다 용이하게 실현하기 위해 도 4와 같이, 접혀지는 모서리에 해당하는 영역에 활물질(28)이 도포되지 않은 무지부(30)를 형성하거나, 혹은 도 5와 같이 오목부(32)를 형성할 수 있다.In order to more easily realize the folding structure, the negative electrode 24 may form the uncoated portion 30 to which the active material 28 is not applied, as shown in FIG. 4, or in FIG. 5. Likewise, the concave portion 32 can be formed.
정극(22) 및 부극(24)과 같은 전극은 리튬이온전지 및 리튬이온폴리머전지의 경우에, 정극 활물질로 ,및 중에서 적어도 1종이 함유된 리튬-천이금속산화물을 사용하고, 부극 활물질로 탄소 및 탄소복합체를 사용하여 형성되어진다.Electrodes such as the positive electrode 22 and the negative electrode 24 serve as positive electrode active materials in the case of lithium ion batteries and lithium ion polymer batteries. , And It is formed using a lithium-transition metal oxide containing at least one of the above, and using carbon and a carbon composite as a negative electrode active material.
이렇게 형성된 부극(24)은 탭(24a)을 부착하여 캔(6) 내부에 용접되거나, 혹은 캔(6)과 직접 접촉되므로 전기적인 연결을 실현한다. 또 정극(22)에는 탭(22b)을 부착하고, 그 탭(22b)을 캡 플레이트(8)를 관통하고 절연된 외부 인출단자(8a)에 용접하므로 전기적인 연결을 실현한다.The negative electrode 24 thus formed is welded inside the can 6 by attaching the tab 24a or directly in contact with the can 6 to realize electrical connection. In addition, the tab 22b is attached to the positive electrode 22, and the tab 22b is penetrated through the cap plate 8 and welded to the insulated external lead terminal 8a to realize electrical connection.
한편 본 발명의 캡 플레이트(8)는 전지의 내부 압력이 규정 이상으로 상승될 경우 파단되어서 내압을 해소하므로 폭발을 방지하는 방폭수단(8b)을 구비한다. 방폭수단(8b)은 캡 플레이트(8)의 일부를 얇게 형성하거나, 구멍을 형성한 후 그 구멍을 얇은 판으로 막아 상대적으로 취약하게 형성하므로 실현할 수 있다.On the other hand, the cap plate 8 of the present invention is provided with explosion-proof means 8b that prevents an explosion because it breaks when the internal pressure of the battery rises above a specified level, thereby releasing the internal pressure. The explosion-proof means 8b can be realized by forming a portion of the cap plate 8 thinly or by forming a hole and then blocking the hole with a thin plate to form relatively fragile.
이상에서 설명한 본 발명의 구성 및 작용을 통하여 알 수 있듯이, 폴딩형 전극군은 롤 상의 권취 구조와 달리 지그재그로 접어 병풍 구조를 형성하므로 복원력에 의한 반발을 제거할 수 있으며, 그 결과 전극군의 부피 변화 및 변형이나 충·방전시의 스웰링을 최소화할 수 있다.As can be seen through the configuration and operation of the present invention described above, the folding electrode group can be folded in a zigzag form to form a folding structure, unlike the winding structure on the roll to remove the repulsion due to the restoring force, as a result of the volume of the electrode group Changes, deformations and swelling during charging and discharging can be minimized.
따라서 본 발명은 전극 활물질의 탈락 및 열화를 방지할 수 있으며, 전지의 성능 및 수명을 향상시킬 수 있다.Therefore, the present invention can prevent the falling off and deterioration of the electrode active material, and can improve the performance and life of the battery.
또 본 발명에 의하면 전지의 고용량 설계시 전극군을 안정적으로 형성하는데 효과적이며, 이것은 리튬전지, 리튬이온전지, 리튬이온폴리머전지뿐 아니라, 각형 구조를 갖는 전지에 모두 적용할 수 있다.In addition, according to the present invention, it is effective to stably form the electrode group in the high capacity design of the battery, which can be applied to not only lithium batteries, lithium ion batteries, lithium ion polymer batteries, but also batteries having a rectangular structure.
도 1은 본 발명에 의한 이차전지의 분리 사시도.1 is an exploded perspective view of a secondary battery according to the present invention;
도 2는 본 발명에 의한 이차전지의 단면도.2 is a cross-sectional view of a secondary battery according to the present invention.
도 3은 본 발명에 의한 전극군의 다른 예를 도시한 단면도.3 is a cross-sectional view showing another example of an electrode group according to the present invention.
도 4는 본 발명에 관련된 부극을 도시한 사시도.4 is a perspective view showing a negative electrode according to the present invention;
도 5는 본 발명에 관련된 부극의 다른 예를 도시한 사시도.5 is a perspective view showing another example of the negative electrode according to the present invention;
도 6은 종래 공지된 각형 이차전지를 보인 분리 사시도.Figure 6 is an exploded perspective view showing a conventionally known square secondary battery.
* 도면의 주요 부분에 대한 부호의 설명 *Explanation of symbols on the main parts of the drawings
6-캔 8-캡 플레이트6-Can 8-Cap Plate
8a-외부 인출단자 8b-방폭수단8a-outer terminal 8b-explosion proof
20-전극군 22-정극20-electrode group 22-positive electrode
22a-리이드 24-부극22a-lead 24-negative
26-세퍼레이터 28-활물질26-separator 28-active material
30-무지부 32-오목부30-ignorance 32-concave
Claims (8)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR10-1999-0036252A KR100537607B1 (en) | 1999-08-30 | 1999-08-30 | Folding type electrode assembly and secondary battery with the same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR10-1999-0036252A KR100537607B1 (en) | 1999-08-30 | 1999-08-30 | Folding type electrode assembly and secondary battery with the same |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| KR20010019700A KR20010019700A (en) | 2001-03-15 |
| KR100537607B1 true KR100537607B1 (en) | 2005-12-19 |
Family
ID=19609197
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| KR10-1999-0036252A KR100537607B1 (en) | 1999-08-30 | 1999-08-30 | Folding type electrode assembly and secondary battery with the same |
Country Status (1)
| Country | Link |
|---|---|
| KR (1) | KR100537607B1 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102055004A (en) * | 2009-11-03 | 2011-05-11 | 三星Sdi株式会社 | Rechargeable battery and method of manufacturing the same |
| EP3907807B1 (en) * | 2019-12-04 | 2023-12-13 | Contemporary Amperex Technology Co., Limited | Electrode assembly and its forming method and manufacturing system, secondary battery, battery module and device |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100563038B1 (en) * | 1999-10-27 | 2006-03-22 | 삼성에스디아이 주식회사 | Sealed battery |
| KR100907623B1 (en) * | 2006-05-15 | 2009-07-15 | 주식회사 엘지화학 | Electrolyte Assembly for Secondary Battery of Novel Laminated Structure |
| KR101292952B1 (en) | 2011-03-16 | 2013-08-02 | 삼성에스디아이 주식회사 | Electrode assembly and secondary battery using the same |
| KR101590217B1 (en) * | 2012-11-23 | 2016-01-29 | 주식회사 엘지화학 | Method for manufacturing electorde assembly and electrode assembly manufactured thereby |
| KR101865450B1 (en) * | 2015-06-23 | 2018-07-13 | 주식회사 엘지화학 | Electrode assembly for secondary battery, method of making the electrode assembly |
| KR102143558B1 (en) * | 2017-03-20 | 2020-08-12 | 주식회사 엘지화학 | Electrode assembly and the manufacturing method |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5300373A (en) * | 1992-09-11 | 1994-04-05 | Valence Technology, Inc. | Electrochemical cell stack and method of making an electrochemical cell stack |
| US5582931A (en) * | 1992-12-18 | 1996-12-10 | Canon Kabushiki Kaisha | Rectangular cell |
| JPH10302828A (en) * | 1997-04-28 | 1998-11-13 | Mitsubishi Cable Ind Ltd | Angular battery and manufacture thereof |
| KR20000051741A (en) * | 1999-01-26 | 2000-08-16 | 김순택 | Electrode assembly used in secondary battery |
| EP1113511A1 (en) * | 1999-06-11 | 2001-07-04 | Kao Corporation | Lithium secondary cell and its producing method |
-
1999
- 1999-08-30 KR KR10-1999-0036252A patent/KR100537607B1/en active IP Right Grant
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5300373A (en) * | 1992-09-11 | 1994-04-05 | Valence Technology, Inc. | Electrochemical cell stack and method of making an electrochemical cell stack |
| US5582931A (en) * | 1992-12-18 | 1996-12-10 | Canon Kabushiki Kaisha | Rectangular cell |
| JPH10302828A (en) * | 1997-04-28 | 1998-11-13 | Mitsubishi Cable Ind Ltd | Angular battery and manufacture thereof |
| KR20000051741A (en) * | 1999-01-26 | 2000-08-16 | 김순택 | Electrode assembly used in secondary battery |
| EP1113511A1 (en) * | 1999-06-11 | 2001-07-04 | Kao Corporation | Lithium secondary cell and its producing method |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102055004A (en) * | 2009-11-03 | 2011-05-11 | 三星Sdi株式会社 | Rechargeable battery and method of manufacturing the same |
| KR101084075B1 (en) | 2009-11-03 | 2011-11-16 | 삼성에스디아이 주식회사 | Rechargeable battery and manufacturing method of the same |
| CN102055004B (en) * | 2009-11-03 | 2014-10-29 | 三星Sdi株式会社 | Rechargeable battery and method of manufacturing the same |
| EP3907807B1 (en) * | 2019-12-04 | 2023-12-13 | Contemporary Amperex Technology Co., Limited | Electrode assembly and its forming method and manufacturing system, secondary battery, battery module and device |
Also Published As
| Publication number | Publication date |
|---|---|
| KR20010019700A (en) | 2001-03-15 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| KR100614381B1 (en) | Li Ion Secondary Battery | |
| KR100570625B1 (en) | Secondary battery | |
| EP2597705B1 (en) | Rechargeable battery | |
| EP2587566B1 (en) | Rechargeable battery with improved safety | |
| KR100313119B1 (en) | Electrode assembly used in secondary battery | |
| EP4080644A1 (en) | Electrode assembly comprising disconnection prevention layer, and preparation method thereof | |
| KR101546545B1 (en) | Pouch type lithium secondary battery | |
| JP2000048779A (en) | Cap assembly of secondary battery | |
| KR100537607B1 (en) | Folding type electrode assembly and secondary battery with the same | |
| EP2424007A1 (en) | Rechargeable battery | |
| KR20040006639A (en) | Pole plate assembly for lithium ion cell and lithium ion cell | |
| KR20050110459A (en) | Secondary battery, electrodes assembly and plate using the same | |
| KR101156331B1 (en) | Electrode assembly, method for fabricating the electrode assembly and secondary battery including the electrode assembly | |
| KR20050020894A (en) | Secondary Battery having a Tap in Short Part of Can | |
| KR100515356B1 (en) | Secondary battery and method for fabricating safety valve thereof | |
| US20230299394A1 (en) | Battery case and secondary battery including the same | |
| KR100322100B1 (en) | Sealed battery | |
| KR20000038268A (en) | Can of secondary battery | |
| KR100590009B1 (en) | Secondary battery and electrodes assembly using the same | |
| KR101473392B1 (en) | Secondary battery and method for manufacturing the same | |
| KR100601536B1 (en) | Li Ion Secondary Battery | |
| CN110534799B (en) | Battery and battery cover plate assembly | |
| KR20220139619A (en) | Secondary battery and manufacturing method of the same | |
| KR102335696B1 (en) | The Current Interrupt Device And The Cap Assembly | |
| KR100918409B1 (en) | Jelly-roll type electrode assembly and secondary cell therewith |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| A201 | Request for examination | ||
| E701 | Decision to grant or registration of patent right | ||
| GRNT | Written decision to grant | ||
| FPAY | Annual fee payment |
Payment date: 20121123 Year of fee payment: 8 |
|
| FPAY | Annual fee payment |
Payment date: 20131125 Year of fee payment: 9 |
|
| FPAY | Annual fee payment |
Payment date: 20141118 Year of fee payment: 10 |
|
| FPAY | Annual fee payment |
Payment date: 20151123 Year of fee payment: 11 |
|
| FPAY | Annual fee payment |
Payment date: 20161115 Year of fee payment: 12 |
|
| FPAY | Annual fee payment |
Payment date: 20171121 Year of fee payment: 13 |
|
| FPAY | Annual fee payment |
Payment date: 20181119 Year of fee payment: 14 |