JPH02170351A - Cylindrical cell and its manufacture - Google Patents
Cylindrical cell and its manufactureInfo
- Publication number
- JPH02170351A JPH02170351A JP63324122A JP32412288A JPH02170351A JP H02170351 A JPH02170351 A JP H02170351A JP 63324122 A JP63324122 A JP 63324122A JP 32412288 A JP32412288 A JP 32412288A JP H02170351 A JPH02170351 A JP H02170351A
- Authority
- JP
- Japan
- Prior art keywords
- active material
- positive
- sheet
- electrode plate
- negative electrodes
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000004519 manufacturing process Methods 0.000 title claims description 4
- 239000011149 active material Substances 0.000 claims abstract description 12
- 238000005520 cutting process Methods 0.000 claims abstract description 10
- 238000000034 method Methods 0.000 claims abstract description 4
- 238000004804 winding Methods 0.000 claims abstract description 4
- 229910052751 metal Inorganic materials 0.000 claims description 16
- 239000002184 metal Substances 0.000 claims description 16
- 238000010248 power generation Methods 0.000 claims description 5
- 238000001035 drying Methods 0.000 claims 1
- 238000003825 pressing Methods 0.000 claims 1
- 239000007774 positive electrode material Substances 0.000 abstract description 8
- 239000007773 negative electrode material Substances 0.000 abstract description 6
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 2
- 239000011810 insulating material Substances 0.000 description 2
- NUJOXMJBOLGQSY-UHFFFAOYSA-N manganese dioxide Chemical compound O=[Mn]=O NUJOXMJBOLGQSY-UHFFFAOYSA-N 0.000 description 2
- 238000004080 punching Methods 0.000 description 2
- 238000010008 shearing Methods 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 239000004743 Polypropylene Substances 0.000 description 1
- FBDMJGHBCPNRGF-UHFFFAOYSA-M [OH-].[Li+].[O-2].[Mn+2] Chemical compound [OH-].[Li+].[O-2].[Mn+2] FBDMJGHBCPNRGF-UHFFFAOYSA-M 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 229910002092 carbon dioxide Inorganic materials 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- -1 polypropylene Polymers 0.000 description 1
- 229920001155 polypropylene Polymers 0.000 description 1
- 125000006850 spacer group Chemical group 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 239000000126 substance Substances 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
- H01M4/04—Processes of manufacture in general
- H01M4/0402—Methods of deposition of the material
- H01M4/0404—Methods of deposition of the material by coating on electrode collectors
-
- 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
- H01M4/04—Processes of manufacture in general
-
- 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
- H01M4/04—Processes of manufacture in general
- H01M4/043—Processes of manufacture in general involving compressing or compaction
-
- 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
Abstract
Description
【発明の詳細な説明】 産業上の利用分野 本発明は円筒形電池に関するものである。[Detailed description of the invention] Industrial applications The present invention relates to cylindrical batteries.
従来の技術
従来の円筒形電池の極板の切断加工は、切刃によるせん
断加工、あるいは金型による打抜き加工により行われて
いた。BACKGROUND OF THE INVENTION Conventionally, the electrode plates of cylindrical batteries have been cut by shearing with a cutting blade or punching with a die.
発明が解決しようとする課題
ここでは−例として正極が金属集電網６と活物質７から
成る例で以下説明する。Problems to be Solved by the Invention Hereinafter, an example in which the positive electrode is composed of a metal current collecting network 6 and an active material 7 will be explained below.
せん断加工あるいは打抜き加工によって切断された正極
極板１６の側端部は、第２図人に示すように、金属集電
網６の切断加工時の平面方向への突起、つまり°かえり
”１６が発生する。このかえり１６は切刃の摩耗鈍化と
ともに増大し１次第に第２図Ｂのように正極活物質７を
超えて突き出てくる。また、第２図Ｇのようにかえり１
６が発生した部分の正極活物質γと金属集電網６との密
着力は弱くなり、正極活物質７は欠けやすく、脱落して
、かえり１６が表面に現われてしまう。このようにかえ
り１６が大きくなったり、あるいは正概括物質７の脱落
によりかえり１６が表面に現われると、このかえり１６
がセパレータを突き破り。As shown in FIG. 2, the side edge of the positive electrode plate 16 cut by shearing or punching has protrusions in the plane direction during the cutting process of the metal current collector net 6, that is, burrs 16. This burr 16 increases as the wear of the cutting edge slows down, and gradually protrudes beyond the positive electrode active material 7 as shown in FIG. 2B.Also, as shown in FIG.
The adhesion between the positive electrode active material γ and the metal current collector net 6 becomes weak in the portion where the burrs 6 occur, and the positive electrode active material 7 is easily chipped and falls off, resulting in burrs 16 appearing on the surface. If the burr 16 becomes larger in this way, or if the burr 16 appears on the surface due to shedding of the general substance 7, this burr 16
breaks through the separator.
負極と接触して内部短絡を起こすという問題があった。There was a problem in that contact with the negative electrode caused an internal short circuit.
本発明は、このような問題点を解決するもので。The present invention solves these problems.
金属集電網の切断時のかえりを無くシ、他方極との接触
による内部短絡を防止した１円筒形電池及びその製造法
を提供することを目的とするものである。It is an object of the present invention to provide a single cylindrical battery that eliminates burrs when cutting a metal current collector grid and prevents internal short circuits due to contact with the other electrode, and a method for manufacturing the same.
課題を解決するだめの手段
上記の問題点を解決するため１本発明は、正・負極の少
なくとも一方が、金属集電網に圧着されたシート状の活
物質からなり、この正・負極とこの正・負極間に介在し
たセパレータとを巻回した発電要素群からなる円筒形電
池において、前記金属集電網と活物質からなる極板の側
端部をレーザー光により、切断加工したものである。Means for Solving the Problems In order to solve the above-mentioned problems, the present invention provides that at least one of the positive and negative electrodes is made of a sheet-like active material crimped to a metal current collector network, and the positive and negative electrodes and the positive - In a cylindrical battery consisting of a group of power generating elements wound around a separator interposed between negative electrodes, the side edges of the electrode plates made of the metal current collecting network and active material are cut using a laser beam.
作用
上記の構成によれば、金属集電網の切断時のかえりは発
生せず、他極と接触して、内部短絡を発生するという問
題は解決される。Effects According to the above configuration, burrs do not occur when the metal current collection network is cut, and the problem of contact with other electrodes and occurrence of internal short circuits is solved.
実施例 以下１本発明の一実施例を図面に基づいて説明する。Example An embodiment of the present invention will be described below based on the drawings.
第１図Ａは本発明の一実施例を示す円筒形電池の断面図
である。第１図において５円筒形電池１は、一方が開口
された円筒状の電池ケース２の中に発電要素群３が収納
され、前記ケース２の開口部が正極端子板４により閉鎖
されている。前記発電要素群３は、シート状の負極活物
質５と金属集電網６に圧着されたシート状の正極活物質
７とをこの正・負極活物質６．７間にセパレーター８を
介在させて渦巻状に巻回して形成されている。第１図Ｂ
は、正極極板１６の正面図及び断面図を示したもの、ま
た第１図Ｃは切断面の一部を示したものであり、その側
端部（外周）はレーザー光により切断されており、金属
集電網の突出部にリボン状の正極集電体９が溶接され、
正極集電体９の先端は、正極端子板４に溶接されている
。また負極活物質６と電池ケース２の底面との間には負
極集電体１Ｑが介在され、この負極集電体１ｏを介して
、負極活物質５と！池ケース２とが電気的に接続されて
いる。また発電要素群３の下部と電池ケース２の底面上
の負極集電体１ｏとの間には、中央に孔を有する絶縁板
１１が配設され１発電要素群３の上部にも、リング状の
絶縁材（スペーサ）１２が配設されている。FIG. 1A is a sectional view of a cylindrical battery showing an embodiment of the present invention. In FIG. 1, a five-cylindrical battery 1 has a power generation element group 3 housed in a cylindrical battery case 2 with one side open, and the opening of the case 2 is closed by a positive terminal plate 4. The power generation element group 3 consists of a sheet-shaped negative electrode active material 5 and a sheet-shaped positive electrode active material 7 crimped onto a metal current collection network 6, which are swirled together with a separator 8 interposed between the positive and negative electrode active materials 6 and 7. It is formed by winding it into a shape. Figure 1B
1 shows a front view and a cross-sectional view of the positive electrode plate 16, and FIG. , a ribbon-shaped positive electrode current collector 9 is welded to the protrusion of the metal current collector network,
The tip of the positive electrode current collector 9 is welded to the positive electrode terminal plate 4. Further, a negative electrode current collector 1Q is interposed between the negative electrode active material 6 and the bottom surface of the battery case 2, and the negative electrode active material 5 and! It is electrically connected to the pond case 2. Furthermore, an insulating plate 11 having a hole in the center is provided between the lower part of the power generating element group 3 and the negative electrode current collector 1o on the bottom surface of the battery case 2. An insulating material (spacer) 12 is provided.
まだ、電池ケース２と正極端子板４との間には絶縁バッ
キング１３が介在され内部を気密に密閉している。An insulating backing 13 is still interposed between the battery case 2 and the positive terminal plate 4 to airtightly seal the inside.
次に本発明を、直径１６．５１ｆｆｆｆ、高さ３３．５
１の円筒形二酸化マンガンリチウム電池において実施し
、従来例として、金型による打抜き加工による正極極板
を使用した電池と１本発明の実施例の正極極板を使用し
た電池の、内部短絡不良の発生率を比較した。第１表は
その結果を示したものである。なお実施例の正極極板は
、炭酸ガスレーザー光にて、出力５００Ｗ切断スピ一ド
ｓｍ／分で連続的に切断したものである。またレーザー
光の出力の条件により、金属集電網は切断せずに活物質
を除去することも可能である。また、実施例で使用した
正極活物質は主として二酸化マンガンとカーボンからな
り、金属集電網は、ステンレス、セパレーターは、ポリ
プロピレン製の微多孔質セパレータ−（厚さ２５μｍ）
を用いている。Next, the present invention has a diameter of 16.51ffff and a height of 33.5mm.
The tests were carried out on cylindrical manganese dioxide lithium batteries (1), and as a conventional example, a battery using a positive electrode plate punched by a mold, and (1) a battery using a positive electrode plate according to an embodiment of the present invention. Incidence rates were compared. Table 1 shows the results. The positive electrode plate of the example was continuously cut with a carbon dioxide laser beam at an output of 500 W and a cutting speed of sm/min. Furthermore, depending on the laser beam output conditions, it is also possible to remove the active material without cutting the metal current collection network. In addition, the positive electrode active material used in the example mainly consisted of manganese dioxide and carbon, the metal current collecting network was made of stainless steel, and the separator was a microporous separator made of polypropylene (thickness: 25 μm).
is used.
第１表
第１表に示すように１本発明の実施例に２いては正極極
板のかえりによる内部短絡は発生しない。As shown in Table 1, in Examples 1 and 2 of the present invention, internal short circuits due to burrs of the positive electrode plate did not occur.
発明の効果
以上のように１本発明によれば、極板の側端部にかえり
が発生することがなく、かえりのない安定した極板を得
ることが出来、他極との内部短絡を防止することが出来
る。Effects of the Invention As described above, according to the present invention, burrs do not occur at the side edges of the electrode plate, a stable electrode plate without burrs can be obtained, and internal short circuits with other electrodes are prevented. You can.
第１図ム、Ｂ、Ｃは本発明の一実施例を示す円筒形電池
の断面図、ならびに正極極板の正面図及び断面図、第２
図人、Ｂ、Ｃは、従来の正極極板の側端部の切断面の一
部を示したものである。
１・・・・・・円筒形電池、２・・・・・・電池ケース
、３・・・・・・発電要素群、４・・・・・・正極端子
板、５・・・・・・負極活物質、６・・・・・・金属集
電網、７・・・・・・正極活物質、８・・・・・・セパ
レータ、９・・・・・・正極集電体、１０・・・・・・
負極集電体、１１・・・・・・絶縁板、１２・・・・・
・絶縁材、１３・・・・・・絶縁バッキング２１４・・
・・・・絶縁シート、１５・・・・・正極極板、１６・
・・・・・かえり。
代理人の氏名 弁理士 粟 野 重 孝 ほか１名ベFigures 1, B, and C are cross-sectional views of a cylindrical battery showing one embodiment of the present invention, a front view and a cross-sectional view of the positive electrode plate, and Figure 2.
Figures B and C show part of the cut surface of the side end of a conventional positive electrode plate. 1... Cylindrical battery, 2... Battery case, 3... Power generation element group, 4... Positive terminal plate, 5... Negative electrode active material, 6... Metal current collector network, 7... Positive electrode active material, 8... Separator, 9... Positive electrode current collector, 10...・・・・・・
Negative electrode current collector, 11... Insulating plate, 12...
・Insulating material, 13...Insulating backing 214...
... Insulating sheet, 15 ... Positive electrode plate, 16.
・・・・・・Back. Name of agent: Patent attorney Shigetaka Awano and one other person
Claims (2)
されたシート状の活物質からなり、この正・負極と、正
・負極間に介在したセパレータとを巻回した発電要素群
からなる円筒形電池であって、前記金属集電網と活物質
からなる一方の極板の側端部をレーザー光により、切断
加工したことを特徴とする円筒形電池。(1) At least one of the positive and negative electrodes consists of a sheet-like active material crimped onto a metal current collection network, and the power generation element group consists of a winding of the positive and negative electrodes and a separator interposed between the positive and negative electrodes. 1. A cylindrical battery, characterized in that a side end of one electrode plate made of the metal current collector network and an active material is cut using a laser beam.
されたシート状の活物質からなり、この正・負極と、正
・負極間に介在したセパレータとを巻回した発電要素群
を用いる円筒形電池の製造法であって、金属集電網に活
物質を充填・圧着し、乾燥後、シート状極板の側端部を
レーザー光により切断し、巻回することを特徴とする円
筒形電池の製造法。(2) At least one of the positive and negative electrodes is made of a sheet-like active material crimped onto a metal current collection network, and a power generation element group is used in which the positive and negative electrodes and a separator interposed between the positive and negative electrodes are wound. A method for manufacturing a cylindrical battery, which is characterized by filling and pressing an active material into a metal current collection network, drying, cutting the side edges of a sheet-like electrode plate with a laser beam, and winding the battery. Battery manufacturing method.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63324122A JPH02170351A (en) | 1988-12-22 | 1988-12-22 | Cylindrical cell and its manufacture |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63324122A JPH02170351A (en) | 1988-12-22 | 1988-12-22 | Cylindrical cell and its manufacture |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH02170351A true JPH02170351A (en) | 1990-07-02 |
Family
ID=18162401
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP63324122A Pending JPH02170351A (en) | 1988-12-22 | 1988-12-22 | Cylindrical cell and its manufacture |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH02170351A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010034009A (en) * | 2008-07-31 | 2010-02-12 | Nec Tokin Corp | Stacked secondary battery and method of manufacturing the same |
| WO2018043443A1 (en) * | 2016-08-31 | 2018-03-08 | 三洋電機株式会社 | Secondary battery electrode, method for manufacturing same, secondary battery, and method for manufacturing same |
-
1988
- 1988-12-22 JP JP63324122A patent/JPH02170351A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010034009A (en) * | 2008-07-31 | 2010-02-12 | Nec Tokin Corp | Stacked secondary battery and method of manufacturing the same |
| WO2018043443A1 (en) * | 2016-08-31 | 2018-03-08 | 三洋電機株式会社 | Secondary battery electrode, method for manufacturing same, secondary battery, and method for manufacturing same |
| US11527744B2 (en) | 2016-08-31 | 2022-12-13 | Sanyo Electric Co., Ltd. | Secondary-battery electrode and secondary-battery electrode manufacturing method, and secondary battery and method of manufacturing secondary battery |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US4363857A (en) | Laminated metal-plastic battery grid | |
| JPH10125348A (en) | Battery | |
| JPH02170351A (en) | Cylindrical cell and its manufacture | |
| JPH07220715A (en) | Battery and its manufacture | |
| JP4016214B2 (en) | Battery electrode manufacturing method | |
| JPH0418432B2 (en) | ||
| JP3701900B2 (en) | Method for producing non-aqueous electrolyte battery | |
| JPS6134695Y2 (en) | ||
| JPS58188050A (en) | Manufacture of case for cell | |
| JP3857751B2 (en) | Battery with non-sintered electrode plate | |
| JPH0112377Y2 (en) | ||
| JP3350359B2 (en) | Manufacturing method of positive electrode plate for alkaline storage battery | |
| JPS58214273A (en) | Manufacture of lead-acid battery | |
| JP2708123B2 (en) | Manufacturing method of paste electrode | |
| JPH0513064A (en) | Manufacture of electrode plate for alkaline storage battery | |
| JPS6065452A (en) | Alkaline storage battery | |
| JP2976825B2 (en) | Cylindrical sealed alkaline storage battery | |
| JP2017174519A (en) | Electrode for battery, manufacturing method of electrode for battery and laminated battery | |
| JPS603492Y2 (en) | Sealed alkaline storage battery | |
| JPS61133571A (en) | Flat battery | |
| JPH11307089A (en) | Battery electrode plate | |
| RU2083034C1 (en) | Stripless cadmium electrode of sealed storage cell | |
| JP3853343B2 (en) | Non-aqueous electrolyte battery | |
| JP3144267B2 (en) | Manufacturing method of button type zinc-air battery | |
| JPS59130072A (en) | Manufacturing method of collector for battery |