KR19980019880U - Current collector for negative electrode plate of cylindrical secondary battery - Google Patents
Current collector for negative electrode plate of cylindrical secondary battery Download PDFInfo
- Publication number
- KR19980019880U KR19980019880U KR2019960033074U KR19960033074U KR19980019880U KR 19980019880 U KR19980019880 U KR 19980019880U KR 2019960033074 U KR2019960033074 U KR 2019960033074U KR 19960033074 U KR19960033074 U KR 19960033074U KR 19980019880 U KR19980019880 U KR 19980019880U
- Authority
- KR
- South Korea
- Prior art keywords
- negative electrode
- electrode plate
- current collector
- secondary battery
- cylindrical secondary
- Prior art date
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- 239000000956 alloy Substances 0.000 claims abstract description 9
- 229910045601 alloy Inorganic materials 0.000 claims abstract description 9
- 229910052751 metal Inorganic materials 0.000 claims description 4
- 239000002184 metal Substances 0.000 claims description 4
- 239000000758 substrate Substances 0.000 claims 1
- 238000004804 winding Methods 0.000 abstract description 8
- 238000005452 bending Methods 0.000 abstract description 6
- 239000000463 material Substances 0.000 abstract description 5
- 229910052739 hydrogen Inorganic materials 0.000 description 9
- 239000001257 hydrogen Substances 0.000 description 9
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 6
- 238000007599 discharging Methods 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 239000007773 negative electrode material Substances 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 3
- 238000003860 storage Methods 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 239000003792 electrolyte Substances 0.000 description 2
- 150000002739 metals Chemical class 0.000 description 2
- 238000005096 rolling process Methods 0.000 description 2
- 239000011149 active material Substances 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 229910044991 metal oxide Inorganic materials 0.000 description 1
- 150000004706 metal oxides Chemical class 0.000 description 1
- 239000007774 positive electrode material Substances 0.000 description 1
- 238000005728 strengthening Methods 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M4/00—Electrodes
- H01M4/02—Electrodes composed of, or comprising, active material
- H01M4/36—Selection of substances as active materials, active masses, active liquids
- H01M4/38—Selection of substances as active materials, active masses, active liquids of elements or alloys
-
- 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
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Secondary Cells (AREA)
- Battery Electrode And Active Subsutance (AREA)
- Cell Electrode Carriers And Collectors (AREA)
Abstract
원통형 이차전지의 전극부를 형성하는 음극판에 있어, 이 음극판의 모체가 되는 집전체로서, 종래의 음극판이 양극판과 함께 권취될 때에 그 굽힘강도의 세기로 인해 꺾임 현상을 발생시켜 전지의 전극부 권취공정에 어려움을 불러일으키는 문제점을 해결하기 위하여, 세퍼레이터를 사이에 두고 양극판과 함께 권취되어 원통형 캔 내부에 삽입되는 음극판용 집전체에 있어서, 상기 집전체가 Ni 도금하여 그 내부에 다수의 홀을 형성한 주기판으로 이루어지되, 이 주기판이 Fe과 함께 P, Al, Ni 중 하나의 금속인 혼합된 합금으로 이루어진 원통형 이차전지의 음극판용 집전체를 제안한다.A negative electrode plate for forming an electrode part of a cylindrical secondary battery, which is a current collector which is a base material of the negative electrode plate, when a conventional negative electrode plate is wound together with a positive electrode plate, a bending phenomenon occurs due to the strength of the bending strength, thereby winding the electrode part of the battery. In order to solve the problem of causing a problem in the current collector for a negative electrode plate wound with a positive electrode plate with a separator interposed therebetween and inserted into a cylindrical can, the current collector is Ni-plated to form a plurality of holes therein. The present invention proposes a current collector for a negative electrode plate of a cylindrical secondary battery, which is composed of a main plate, and the main plate is made of an alloy mixed with one of P, Al, and Ni together with Fe.
Description
본 고안은 이차전지의 음극판용 집전체에 관한 것으로서, 보다 상세하게는 음극 활물질을 지지하여 전지의 음극판을 형성하는 이차전지의 음극판용 집전체에 관한 것이다.The present invention relates to a current collector for a negative electrode plate of a secondary battery, and more particularly, to a negative electrode current collector for a secondary battery that supports a negative electrode active material to form a negative electrode plate of a battery.
잘 알려진 바와 같이 전지의 종류에 있어, 이차전지는 충, 방전의 작용으로 지속적인 사용이 가능한 전지를 가리키고 있다.As is well known, in the type of battery, the secondary battery refers to a battery that can be continuously used by the action of charging and discharging.
즉, 이러한 이차전지의 하나인 니켈-수소 전지에 있어서는, 금속산화물을 양극으로 사용하고, 음극으로는 수소 저장합금을 사용하여 충전시 음극에서 발생된 수소를 수소 저장합금이 흡수하고 방전시에는 필요한 수소를 전해액 내로 방출하여 충, 방전을 일으킴으로써 사용이 가능하게 된다.That is, in the nickel-hydrogen battery, which is one of such secondary batteries, a metal oxide is used as a positive electrode and a hydrogen storage alloy is used as a negative electrode, so that the hydrogen storage alloy absorbs hydrogen generated at the negative electrode during charging and is necessary for discharging. It is possible to use hydrogen by releasing hydrogen into the electrolyte to cause charging and discharging.
상기 니켈-수소 전지를 이차전지의 예로 하여 볼 때, 이 니켈-수소 전지의 일반적인 구성은, 세퍼레이터를 사이에 두고 권취상태를 이루는 양,음극판이 일정 형태(원통형, 각형)를 이루는 캔 내부에 삽입되고, 여기에 KOH, NaOH, NiOH 등의 전해액이 주입된 다음, 상기 캔 개구부로 가스킷을 개재한 캡 어셈블리가 장착됨으로써 이루어지고 있다.Considering the nickel-hydrogen battery as an example of a secondary battery, a general structure of the nickel-hydrogen battery is inserted into a can in which a positive and negative electrode plates in a wound state with a separator interposed therebetween form a cylindrical shape (cylindrical and square). Then, an electrolyte such as KOH, NaOH, NiOH, or the like is injected therein, and then a cap assembly through a gasket is attached to the can opening.
상기에서 양, 음극판은 전지의 전극부를 구성하는 부위로서, 이는 각기 해당 집전체에 양, 음극 활물질이 도포되고 롤러로서 압연됨으로써 형성된다.In the above, the positive and negative electrode plates are the portions constituting the electrode portion of the battery, which are formed by applying positive and negative electrode active materials to the respective current collectors and rolling them as rollers.
이러한 양, 음극판 중, 종래의 음극판은 그 내부에 다수의 홀을 형성한 음극판용 집전체에 수소 저장합금을 포함한 활물질이 도포되어 이루어지게 되는데, 이 때 상기 음극판용 집전체는 평탄한 Fe 판에 Ni 이 도금된 재질이 사용되는 것이 통상적이다.Of these positive and negative electrode plates, a conventional negative electrode plate is formed by applying an active material including a hydrogen storage alloy to a current collector for a negative electrode plate having a plurality of holes formed therein, wherein the current collector for a negative electrode plate is formed on a flat Fe plate. It is common for this plated material to be used.
이에, 상기와 같이 구성되는 음극판은 양극판과 함께 전지의 (-) 단자를 이루는 캔 내부에 삽입되어 전지의 전극부를 형성하여 이차전지의 충, 방전을 가능케 한다.Thus, the negative electrode plate configured as described above is inserted into the can forming the negative terminal of the battery together with the positive electrode plate to form an electrode part of the battery, thereby enabling charging and discharging of the secondary battery.
그런데, 상기한 종래의 음극판은 원통형으로 이루어진 전지에 적용될 경우, 그 제조 공정시 양극판 및 세퍼레이터와 함께 감아지는 공정에서 꺾임 현상을 발생시킴으로써 그 권취 제조 공정을 어렵게 하고 있는 실정이다.By the way, when the conventional negative electrode plate is applied to a battery having a cylindrical shape, the winding manufacturing process is made difficult by generating a bending phenomenon in a process of winding together with the positive electrode plate and the separator during the manufacturing process.
이러한 문제점은 상기 음극판용 집전체의 재질에서 그 원인이 비롯되는데, 이는 즉, 상기 집전체의 주재질이 Fe 만으로 형성되어 음극판의 굽힘 강도를 높히고 있기 때문이다.This problem is caused by the material of the current collector for the negative electrode plate, that is, because the main material of the current collector is formed of only Fe to increase the bending strength of the negative electrode plate.
따라서, 본 고안은 이와 같은 종래의 이차전지 음극판용 집전체가 가지고 있는 문제점을 해결하기 위하여 안출된 것으로서, 전지의 권취 공정시, 꺾임 현상을 억제시켜 음극판이 양호한 상태로 감겨 캔 내부에 삽입되도록 함으로써 전지 제조 작업성을 향상시킬 수 있도록 하는 원통형 이차전지의 음극판용 집전체를 제공하는 것에 그 목적을 두고 있다.Therefore, the present invention was devised to solve the problems of the conventional current collector for secondary battery negative electrode plates, and during the winding process of the battery, the bending phenomenon is suppressed so that the negative electrode plate is wound in a good state and inserted into the can. It is an object of the present invention to provide a current collector for a negative electrode plate of a cylindrical secondary battery capable of improving battery manufacturing workability.
이에, 상기 목적을 실현하기 위하여 본 고안은 다음과 같은 수단 즉, 세퍼레이터를 사이에 두고 양극판과 함께 권취되어 원통형 캔 내부에 삽입되는 음극판용 집전체에 있어서, 상기 집전체가 Ni 도금하여 그 내부에 다수의 홀을 형성한 주기판으로 이루어지되, 이 주기판이 Fe과 함께 P, Al, Ni 중 하나의 금속인 혼합된 합금으로 이루어진 원통형 이차전지의 음극판용 집전체를 제안한다.Accordingly, in order to realize the above object, the present invention provides a negative electrode current collector for which the following means, that is, a negative electrode plate wound together with a positive electrode plate with a separator interposed therebetween, are inserted into a cylindrical can, and the current collector is Ni-plated therein. It proposes a current collector for a negative electrode plate of a cylindrical secondary battery, which is composed of a main plate formed with a plurality of holes, and the main plate is made of a mixed alloy of Fe, P, Al, and Ni.
도 1 은 본 고안에 따른 원통형 이차전지의 음극판용 집전체를 도시한 사시도이다.1 is a perspective view showing a current collector for a negative electrode plate of a cylindrical secondary battery according to the present invention.
이하, 본 고안의 이해를 돕기 위하여 바람직한 실시예를 첨부한 도면과 함께 설명하면 다음과 같다.Hereinafter, with reference to the accompanying drawings, preferred embodiments to help understand the present invention are as follows.
도 1 은 본 고안에 따라 구비된 원통형 이차전지의 음극판용 집전체를 도시한 사시도로서, 도시된 바와 같이 상기 집전체(1)는 종래의 집전체와 마찬가지로 소정의 두께를 지니고 띠 모양으로 이루어지고 있는 바, 그 내부에는 다수의 음극 활물질 삽입용 홀(10)이 형성되어 있다.1 is a perspective view illustrating a current collector for a negative electrode plate of a cylindrical secondary battery provided according to the present invention, and as shown, the current collector 1 has a predetermined thickness and has a band shape like a conventional current collector. As such, a plurality of holes 10 for inserting the negative electrode active material are formed therein.
이러한 상기 집전체(1) 역시 그 표면에 음극 활물질이 도포된 후, 건조 압연 공정을 거쳐 원통형 이차전지에 필요한 음극판을 형성하게 된다.After the negative electrode active material is coated on the surface of the current collector 1, the negative electrode plate required for the cylindrical secondary battery is formed through a dry rolling process.
본 고안을 따라 구비되는 상기 집전체(1)는 종래와 같이 주기판(12)에 Ni이 도금된 도금부(14)를 보유하여 이루어지게 되나, 상기 주기판(12)은 Fe 를 기본으로 하면서 이에 P, Al, Ni 중 하나의 금속이 혼합되어 형성된 합금으로 이루어지게 된다. 본 실시예에서는 이를 Fe 와 P로 이루어진 합금을 사용하여 형성하였다.The current collector 1 provided according to the present invention is made by retaining the plated portion 14 plated with Ni on the main board 12 as in the prior art, but the main board 12 is based on Fe and thus P It is made of an alloy formed by mixing one metal of Al, Ni. In this embodiment it was formed using an alloy consisting of Fe and P.
본 고안에서 이처럼 상기 집전체(1)의 주기판(12)을 상기 금속들의 합금으로 형성하게 되는 것은, 상기 Fe 과 혼합되는 상기 금속들의 작용에 따라 상기 집전체(1)의 전체적인 유연성을 강화시키기 위함이다.In the present invention, the main plate 12 of the current collector 1 is formed of an alloy of the metals in order to enhance the overall flexibility of the current collector 1 according to the action of the metals mixed with the Fe. to be.
이에, 상기 집전체(1)는 종래의 집전체에 비해 그 유연성이 강화됨에 따라 음극판으로 최종 형성되어 양극판 및 세퍼레이터와 전지의 권취 공정시, 그 유연성으로 인하여 꺾임 현상을 방지하면서 양호하게 감기어 원통형인 캔 내부로 용이하게 삽입될 수 있게 된다.Accordingly, the current collector 1 is finally formed of a negative electrode plate as its flexibility is strengthened as compared with a conventional current collector, and thus, the winding of the positive electrode plate, the separator, and the battery is performed while the winding process of the positive electrode plate and the separator is prevented due to its flexibility. It can be easily inserted into the in can.
이상에서 살펴 본 바와 같이, 본 고안에 의한 원통형 이차전지의 음극판용 집전체는 그 주기판의 재질 변경에 따라 유연성의 강화로 굽힘 강도를 종래 보다 줄일 수 있게 된다.As described above, the current collector for the negative electrode plate of the cylindrical secondary battery according to the present invention can reduce the bending strength by strengthening the flexibility according to the material change of the main plate.
이러한 효과는 본 고안이 적용된 음극판의 권취상태를 양호하게 이루도록 하여, 이차전지의 제조 공정시, 양, 음극판의 권취하여 이를 캔 내부에 삽입하는 공정에 작업성 향상을 가져오는 이점을 낳게 된다.This effect is to achieve a good winding state of the negative electrode plate to which the present invention is applied, it has the advantage of bringing workability improvement in the process of winding the positive electrode plate and inserting it into the can during the manufacturing process of the secondary battery.
Claims (1)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR2019960033074U KR19980019880U (en) | 1996-10-08 | 1996-10-08 | Current collector for negative electrode plate of cylindrical secondary battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR2019960033074U KR19980019880U (en) | 1996-10-08 | 1996-10-08 | Current collector for negative electrode plate of cylindrical secondary battery |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| KR19980019880U true KR19980019880U (en) | 1998-07-15 |
Family
ID=53978595
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| KR2019960033074U KR19980019880U (en) | 1996-10-08 | 1996-10-08 | Current collector for negative electrode plate of cylindrical secondary battery |
Country Status (1)
| Country | Link |
|---|---|
| KR (1) | KR19980019880U (en) |
-
1996
- 1996-10-08 KR KR2019960033074U patent/KR19980019880U/en not_active Application Discontinuation
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