JPH0845500A - Manufacture of electrode - Google Patents
Manufacture of electrodeInfo
- Publication number
- JPH0845500A JPH0845500A JP6179117A JP17911794A JPH0845500A JP H0845500 A JPH0845500 A JP H0845500A JP 6179117 A JP6179117 A JP 6179117A JP 17911794 A JP17911794 A JP 17911794A JP H0845500 A JPH0845500 A JP H0845500A
- Authority
- JP
- Japan
- Prior art keywords
- electrode
- active material
- periphery
- burrs
- core body
- 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.)
- Granted
Links
Classifications
-
- 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
- Battery Electrode And Active Subsutance (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、３次元多孔体に活物質
を充填することによって作製される電極の製造方法に関
する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for producing an electrode prepared by filling a three-dimensional porous body with an active material.
【０００２】[0002]
【従来の技術】電池の電極として用いられているものに
は、その作製工程から区別して、焼結式電極と、非焼結
式電極とがある。このうち非焼結式電極は、低コストで
作製ができ且つ高いエネルギー密度を有するといった利
点を有しており、工業的にも広く用いられている。2. Description of the Related Art Electrodes used as a battery electrode include a sintered electrode and a non-sintered electrode, which are distinguished from each other in their manufacturing process. Among them, the non-sintered electrode has the advantages that it can be manufactured at low cost and has a high energy density, and is widely used industrially.
【０００３】上記非焼結式電極を作製する方法として
は、以下のような方法をあげることができる。 ３次元の多孔質の芯体に活物質を充填し、次いで乾
燥を行い、活物質の充填密度を向上させるために、ロー
ラによって活物質が充填された芯体全体を圧延し、最後
に所定の形状に切断し電極を完成させる方法。 または、芯体を予め所定の大きさに切断し、切断し
た芯体に活物質を充填し、乾燥させ、最後に活物質の充
填密度を向上させるために、ローラによって活物質が充
填された芯体全体を圧延して電極を完成させる方法。As a method for producing the non-sintered electrode, the following method can be mentioned. A three-dimensional porous core is filled with the active material and then dried, and in order to improve the packing density of the active material, the whole core filled with the active material is rolled by a roller, and finally a predetermined core is rolled. A method of cutting the shape to complete the electrode. Alternatively, the core is preliminarily cut into a predetermined size, the cut core is filled with the active material, dried, and finally, the core is filled with the active material by a roller to improve the packing density of the active material. A method of rolling the entire body to complete the electrode.
【０００４】[0004]
【発明が解決しようとする課題】ところで、上記、
のように作製された電極は、いずれも、完成した電極の
周囲には電極の厚みよりも外側に飛び出した状態の芯体
のバリ（図７の（ｃ）参照）が生じてしまう。上記のよ
うなバリが生じるのは、以下のような理由からである。[Problems to be Solved by the Invention] By the way,
In any of the electrodes manufactured as described above, a burr (see (c) in FIG. 7) of the core body that protrudes outside the thickness of the electrode is generated around the completed electrode. The burr described above is generated for the following reasons.
【０００５】まず、の方法の場合、図７（ａ）〜
（ｃ）に示す、一連の芯体の切断工程において、切断部
分が刃によって上方（或いは下方）に押されて、捲くれ
上がった状態になる。この方法では切断が電極の作製過
程の一番最後に行なわれるので結果として完成した電極
の周囲にバリが生じる。また、の方法で作製した場合
は、芯体を切断した際に上記と同様にバリが生じ、さら
に、活物質を充填する際に、活物質を充填するために用
いられる治具等に芯体の周囲が引っ掛かることによっ
て、芯体周囲が捲れ上がったようなバリが生じてしま
う。また、芯体が重なり合ったりすると、芯体同志がひ
っかかってバリが生じることもある。特に活物質を充填
していない状態では芯体の強度は弱くバリが生じやす
い。First, in the case of the method of FIG.
In the series of cutting steps of the core body shown in (c), the cut portion is pushed upward (or downward) by the blade to be rolled up. In this method, cutting is performed at the very end of the electrode manufacturing process, resulting in burrs around the completed electrode. Further, in the case of manufacturing by the method of (1), when the core body is cut, burrs are generated in the same manner as described above, and further, when the active material is filled, the core body is used in a jig or the like used for filling the active material. If the periphery of the core is caught, a burr like that around the core is rolled up. In addition, when the cores overlap each other, the cores may be caught by each other and burrs may occur. In particular, when the active material is not filled, the strength of the core is weak and burrs are likely to occur.
【０００６】この方法では、最終的にローラにより充填
された芯体全体を圧延しているので、周囲に発生したバ
リが若干押さえられるが、全体的な厚みを薄くするため
結局電極の厚みよりバリが外側に飛び出した状態に変わ
りはない。このように周囲に電極の厚みより外側に飛び
出した状態のバリが存在する電極を用いて電池を作製す
ると、バリがセパレータを突き破って対極と接触しショ
ートを起こしてしまう。According to this method, since the entire core finally filled with the roller is rolled, the burr generated around the core can be slightly suppressed, but in order to reduce the overall thickness, the burr is more than the electrode thickness. There is no change in the state that the pops out. When a battery is manufactured by using an electrode in which a burr that protrudes to the outside of the thickness of the electrode is present, the burr breaks through the separator and contacts the counter electrode, causing a short circuit.
【０００７】本発明は、上記問題に鑑みなされたもので
あり、電池を作製した際にショートの原因となるバリの
数が少ない電極の製造方法を提供することを目的とす
る。The present invention has been made in view of the above problems, and it is an object of the present invention to provide a method of manufacturing an electrode in which the number of burrs that cause a short circuit when a battery is manufactured is small.
【０００８】[0008]
【課題を解決する手段】上記目的を達成するために、本
発明は、電極の作製において、３次元多孔体に活物質を
充填し、活物質が充填された状態で芯体を所定の形状に
切断した後、或いは、３次元多孔体を所定の形状に切断
し、切断された芯体に活物質を充填した後に、上記芯体
の周囲を圧延し、周囲の厚さを薄くすることを特徴とす
る。In order to achieve the above-mentioned object, the present invention is to manufacture an electrode by filling a three-dimensional porous body with an active material and forming the core body into a predetermined shape with the active material filled. After cutting, or after cutting the three-dimensional porous body into a predetermined shape and filling the cut core body with an active material, the periphery of the core body is rolled to reduce the thickness of the periphery. And
【０００９】また、３次元多孔体に活物質を充填し、活
物質が充填された状態で芯体を所定の形状に切断した
後、或いは、３次元多孔体を所定の形状に切断し、切断
された芯体に活物質を充填した後に、上記芯体の周囲を
削り取り周囲の厚さを薄くすることを特徴とする。Further, after the three-dimensional porous body is filled with the active material and the core body is cut into a predetermined shape with the active material filled, or the three-dimensional porous body is cut into a predetermined shape and cut. After filling the core body with the active material, the periphery of the core body is shaved off to reduce the thickness of the periphery.
【００１０】[0010]
【作用】上記のように構成することにより、以下のよう
に作用する。上記したようなバリが生じた芯体の周囲を
圧延することにより、芯体の厚みより外側に飛び出した
状態のバリは押さえつけられ、芯体の主表面に対して垂
直な方向に飛び出していたバリが、芯体の主表面に対し
て水平な方向につぶれた状態になり、バリが飛び出した
状態が軽減され、さらに周囲の厚みを薄くするので飛び
出した状態が残っていたとしても電極の中央部の厚みよ
りも飛び出すことがないので電池を作製した際にショー
トの原因に成りにくい。Operation With the above-mentioned configuration, the following operations are performed. By rolling around the core body in which burrs as described above occur, the burrs protruding outside the thickness of the core body are suppressed, and the burrs protruding in the direction perpendicular to the main surface of the core body are pressed. However, it will be crushed in a direction horizontal to the main surface of the core body, the burr protruding state will be reduced, and the surrounding thickness will be made thinner, so even if the protruding state remains, the central part of the electrode Since it does not pop out more than the thickness of, it is less likely to cause a short circuit when a battery is manufactured.
【００１１】また、この圧延の工程を、電極作製工程中
バリ生成を引き起こすと考えられる芯体の切断工程及び
活物質の充填工程の後に、行なうことにより、ショート
の原因となるバリの数を確実に軽減することができる。
また芯体の周囲を削ることにより、周囲に生じたバリが
削り取ることができる。この場合、削り取った面に若干
バリ状のものが生成しても、周囲の厚みは薄く、芯体中
央部の厚みより飛び出ることはないのでショートの発生
は低下する。Further, by carrying out this rolling process after the cutting process of the core body and the filling process of the active material which are considered to cause the formation of burrs during the electrode manufacturing process, the number of burrs causing short circuits can be ensured. Can be reduced to
By shaving the periphery of the core body, burrs generated around the core can be scraped off. In this case, even if a slight burr is formed on the scraped surface, the peripheral thickness is thin and does not protrude beyond the thickness of the central portion of the core, so that the occurrence of short circuit is reduced.
【００１２】また、この削り取りの工程も、芯体の切
断、活物質の充填後に行なっているので、バリの数を確
実に低減させることができる。Further, since this scraping step is also performed after cutting the core and filling the active material, the number of burrs can be surely reduced.
【００１３】[0013]
【実施例】本発明の一例にかかる実施例について以下に
説明を行なう。 （実施例１）厚さ１．５ｍｍの３次元多孔体芯体に水酸
化ニッケルからなるスラリー状の活物質を充填し、乾燥
後、活物質を密に充填するためにローラによって芯体全
体を圧延し、ベース電極を作製した。この時点でのベー
ス電極の厚みは、０．５ｍｍである。EXAMPLES Examples according to one example of the present invention will be described below. (Example 1) A 1.5-mm-thick three-dimensional porous body core was filled with a slurry-like active material made of nickel hydroxide, and after drying, the whole core body was covered with a roller to densely fill the active material. It rolled and produced the base electrode. The thickness of the base electrode at this point is 0.5 mm.
【００１４】上記のように作製したベース電極を所定の
寸法に切断し、図１に示すように、ベース電極１の周囲
を加圧機２によって上下方向から挟み込むようにして圧
延し、完成電極とした。このように作製された完成電極
は、図２に示すように周囲１ｍｍの厚みＴ1 が中央部の
厚みＴ2 と比べて０．０１ｍｍ薄くなっている。The base electrode produced as described above is cut into a predetermined size, and as shown in FIG. 1, the base electrode 1 is rolled by being sandwiched from above and below by a pressing machine 2 to obtain a completed electrode. . In the thus-prepared completed electrode, as shown in FIG. 2, the thickness T 1 at the periphery of 1 mm is 0.01 mm thinner than the thickness T 2 at the central portion.
【００１５】この完成電極を、以下（ａ1） 電極と称す
る。 （実施例２）上記実施例１と同様にベース電極を作製
し、このベース電極を所定の大きさに切断した後、図３
に示すように、ベース電極１の周囲にステンレス球３を
あて、図４に示すようにベース電極１を矢印方向に移動
させることにより周囲とステンレス球３とを擦り合わせ
て、ベース電極周囲を約０．０１ｍｍ削り落とし完成電
極とした。This completed electrode is referred to as (a 1 ) It is called an electrode. (Example 2) A base electrode was prepared in the same manner as in Example 1, and the base electrode was cut into a predetermined size.
As shown in FIG. 4, a stainless ball 3 is applied around the base electrode 1, and the base electrode 1 is moved in the direction of the arrow as shown in FIG. The finished electrode was scraped off by 0.01 mm.
【００１６】このように作製された完成電極の周囲は図
５のような角が削りとられた形状になっていた。この完
成電極を、以下（ａ2） 電極と称する。 （比較例１）実施例１と同様にベース電極を作製し、こ
のベース電極を所定の大きさに切断したものを完成電極
とした。The periphery of the completed electrode thus manufactured had a shape with the corners removed as shown in FIG. This completed electrode is referred to below (a 2 ) It is called an electrode. (Comparative Example 1) A base electrode was prepared in the same manner as in Example 1, and the base electrode was cut into a predetermined size to obtain a completed electrode.
【００１７】このように作製した完成電極を、以下（ｘ
1） 電極と称する。 （比較例２）上記実施例１で用いたと同様の３次元多孔
体芯体を所定の大きさに切断後、芯体の周囲を実施例１
と同様の装置を用いて圧延し周囲の厚みを薄くした。こ
の後、当該芯体に活物質を充填し、乾燥後、活物質を密
に充填させるためローラにより芯体全体を圧延し、完成
電極とした。The completed electrode thus prepared is referred to as (x
1 ) It is called an electrode. (Comparative Example 2) The same three-dimensional porous body core as used in Example 1 was cut into a predetermined size, and then the periphery of the core was subjected to Example 1
It rolled using the same apparatus as above and the peripheral thickness was thinned. After that, the core was filled with the active material, dried, and then the whole core was rolled with a roller to densely fill the active material to obtain a completed electrode.
【００１８】このように作製された完成電極の周囲の厚
みは、中央部より約０．０１ｍｍ薄くなっている。この
完成電極を、以下（ｘ2） 電極と称する。 （比較例３）実施例１と同様の方法で、ベース電極を作
製し、ベース電極周囲の厚みが中央部の厚みより０．０
１ｍｍ薄く成るように圧延した後、圧延した部分を切断
し完成電極とした。The thickness of the periphery of the completed electrode thus manufactured is about 0.01 mm thinner than that of the central portion. This completed electrode is below (x 2 ) It is called an electrode. (Comparative Example 3) A base electrode was prepared in the same manner as in Example 1, and the thickness around the base electrode was 0.0 than the thickness at the center.
After rolling to a thickness of 1 mm, the rolled portion was cut into a finished electrode.
【００１９】このように作製した完成電極を、以下（ｘ
3） 電極と称する。 （実験）上記のように作製した実施例の（ａ1） 、（ａ
2） 電極、比較例の（ｘ1） 〜（ｘ3） 電極を用いて試
験用電池を作製し、ショート発生率と、サイクル寿命に
ついて調べたので、下記表１に示す。The completed electrode thus prepared is
3 ) It is called an electrode. (Experiment) (a 1 ) of the example produced as described above , (A
2 ) Electrode, comparative example (x 1 ) ~ (X 3 ) A test battery was prepared using the electrodes, and the occurrence rate of short circuits and the cycle life were examined. The results are shown in Table 1 below.
【００２０】尚、以下に試験用電池の作製方法と、実験
条件を記載する。 試験用電池の作製方法 実施例の（ａ1） 、（ａ2） 電極、比較例の（ｘ1） 〜
（ｘ3） 電極をそれぞれ正極とし、所定の方法で作製さ
れた水素吸蔵合金を負極とし、これらの両電極をセパレ
ータを介して積層することによって電極群を作製し、こ
の電極群を負極端子兼用の電池ケース内に配置した。し
かる後、電池ケース内に電解液を注液し、さらに電池ケ
ースを封口することによって、電池を作製した。The method for producing the test battery and the experimental conditions will be described below. Method for producing test battery (a 1 ) in Example , (A 2 ) Electrode, comparative example (x 1 ) ~
(X 3 ) Each of the electrodes is used as a positive electrode, a hydrogen storage alloy produced by a predetermined method is used as a negative electrode, and an electrode group is produced by stacking these two electrodes with a separator interposed between them. Placed in. After that, an electrolyte was poured into the battery case, and the battery case was sealed to manufacture a battery.
【００２１】尚、以下（ａ1 ）、（ａ2 ）電極を正極と
して用いて作製した電池をそれぞれ（Ａ1 ）、（Ａ2 ）
電池と称し、また、（ｘ1 ）〜（ｘ3 ）電極を正極とし
て用いて作製した電池をそれぞれ（Ｘ1 ）〜（Ｘ3 ）電
池と称する。 実験条件 （ショート発生率）各試験用電池を１０００セルづつ用
意し、０．１Ｃ（６０ｍＡ）で１時間充電、１０分間放
置後、電池電圧を測定し、電圧が０．５Ｖ以下のものを
ショートしたものとみなし、ショート発生率を算出し
た。 （サイクル寿命）各試験用電池を１０セルづつ用意し、
０．１Ｃ充放電を３回繰り返すことによって活性化した
後、以下の条件で充放電を繰り返し、電池容量が初期容
量の１／２以下になった時を寿命とした。In the following, batteries (A 1 ) and (A 2 ) prepared by using the (a 1 ) and (a 2 ) electrodes as positive electrodes are respectively described.
The batteries are referred to as batteries, and the batteries prepared by using the (x 1 ) to (x 3 ) electrodes as positive electrodes are referred to as (X 1 ) to (X 3 ) batteries, respectively. Experimental conditions (rate of occurrence of short circuit) Prepare 1000 cells of each test battery, charge at 0.1 C (60 mA) for 1 hour, leave for 10 minutes, measure the battery voltage, and short the one with a voltage of 0.5 V or less. The occurrence rate of short-circuit was calculated as if it had occurred. (Cycle life) Prepare 10 cells for each test battery,
After activation was performed by repeating 0.1 C charge / discharge three times, charge / discharge was repeated under the following conditions, and the life was defined when the battery capacity became half or less of the initial capacity.
【００２２】充放電条件 充電 １Ｃ×１６ｈ 休止 １ｈ 放電 １Ｃ 終止電圧１Ｖ 実験結果Charge / Discharge Conditions Charge 1 C × 16 h Pause 1 h Discharge 1 C Final voltage 1 V Experimental result
【００２３】[0023]
【表１】 上記表から明らかなように、（Ａ1） 、（Ａ2） 電池
は、比較例の（Ｘ1） 〜（Ｘ3） 電池と比べて、ショー
ト発生率が低く、サイクル寿命も良好な値を示した。こ
れは、（Ａ1） 、（Ａ2） 電池に用いた（ａ1） 、（ａ
2） 電極では、切断工程、活物質充填工程の後に、ベー
ス電極の周囲の圧延、または、ベース電極の周囲の削り
取りを行なうことによって、電極の厚みより外側に飛び
出したバリを効果的にに減少させることができたためで
あると考える。[Table 1] As is clear from the above table, (A 1 ) , (A 2 ) The battery is a comparative example (X 1 ). ~ (X 3 ) The short-circuit occurrence rate was lower than that of the battery, and the cycle life was also good. This is (A 1 ) , (A 2 ) Used in batteries (a 1 ) , (A
2 ) In the electrode, after the cutting step and the active material filling step, the periphery of the base electrode is rolled or the periphery of the base electrode is shaved to effectively reduce burrs protruding outside the thickness of the electrode. I think it was because I was able to.
【００２４】また（Ｘ2） 電池の（ｘ2） 電極について
は、芯体切断時に生じたバリは、芯体周囲のの圧延によ
り解消されたが、周囲の圧延後に行なわれた活物質充填
時に芯体の薄くなった部分の周囲６ａだけでなく、図６
に示すように、芯体の厚みが厚い部分の周囲６ｂにもバ
リが生じたために、ローラで圧延しても結局電極の厚み
よりバリが外側に飛び出した状態に変わりはなく、ショ
ート発生率、サイクル寿命共に良好な値を示すことがで
きなかったと思われる。Also (X 2 ) Battery (x 2 ) Regarding the electrode, the burr generated when the core body was cut was eliminated by rolling around the core body, but not only the periphery 6a of the thinned portion of the core body at the time of filling the active material performed after rolling the core body, Figure 6
As shown in Fig. 5, since burr also occurred around the thick portion of the core body 6b, even if it was rolled with a roller, the burr did not change beyond the thickness of the electrode, and the short-circuit occurrence rate, It seems that the cycle life could not show a good value.
【００２５】（Ｘ1） 、（Ｘ3） 電池については、（ｘ
1） 、（ｘ3） 電極の作製過程において、一番最後の段
階で切断を行なっているので、その際に生じたバリによ
って、ショートが起きたものと考える。尚、（ｘ3） 電
極については、周囲の厚みが薄くなった部分を切断して
いるので、（ｘ1） 電極よりは、切断時に生成するバリ
が電極厚みよりも外側にはみ出しにくい。従って、（ｘ
3） 電極のショート発生率は、（ｘ1） 電池のショート
発生率よりは若干小さいが、本発明よりは発生しやすい
状態になっている。 〔その他の事項〕 ベース電極の周囲を圧延し周囲の厚みを薄くする工
程、ベース電極の周囲を削り取る工程の前の工程は、上
記実施例の作製順序に限ることはなく、ベース電極の周
囲を圧延し周囲の厚みを薄くする工程、ベース電極の周
囲を削り取る工程の前に、バリを発生する切断の工程
と、活物質の充填の工程が、行なわれていればよい。 上記実施例では、水酸化ニッケルを活物質としたニ
ッケル電極を作製したが、３次元多孔質の芯体に活物質
を充填するものであれば、これに限るものではない。 上記実施例では、周囲を均一な厚みに圧延したが、
端にむかって段階的に薄くなる形やテーパ状の形など芯
体の周囲部分が薄くなっていればよい。 上記実施例２では、球体のステンレスを用いてバリ
を削り取ったが、形状は、円錐状や平板状などでもよ
く、また、材質もステンレスに限ることはない。(X 1 ) , (X 3 ) For batteries, (x
1 ) , (X 3 ) Since the cutting is performed at the last stage in the process of manufacturing the electrodes, it is considered that the burr generated at that time caused a short circuit. In addition, (x 3 ) As for the electrode, the part where the surrounding thickness is thin is cut, so (x 1 ) Burrs generated at the time of cutting are less likely to extend outside the electrode than the thickness of the electrode. Therefore, (x
3 ) Electrode short circuit occurrence rate is (x 1 ) Although it is slightly lower than the rate of occurrence of short circuit in the battery, it is more likely to occur than in the present invention. [Other matters] The steps before the step of rolling the periphery of the base electrode to reduce the thickness of the periphery and the step of scraping off the periphery of the base electrode are not limited to the manufacturing order of the above-mentioned embodiment, Before the step of rolling to reduce the thickness of the periphery and the step of scraping off the periphery of the base electrode, the step of cutting to generate burrs and the step of filling the active material may be performed. In the above-mentioned examples, nickel electrodes using nickel hydroxide as an active material were produced, but the present invention is not limited to this as long as the three-dimensional porous core body is filled with the active material. In the above example, the circumference was rolled to a uniform thickness,
It suffices that the peripheral portion of the core body be thin, such as a shape that gradually becomes thinner toward the end or a tapered shape. In Example 2, the burrs were scraped off using spherical stainless steel, but the shape may be conical or flat, and the material is not limited to stainless steel.
【００２６】[0026]
【発明の効果】以上説明したように、本発明によれば、
芯体の切断、活物質の充填後に芯体の周囲の圧延するこ
とによって切断及び活物質の充填時に発生したバリが押
さえられ、周囲を薄くすることによって電極の中央部分
の厚みよりバリが飛び出しにくくなり、ショートの原因
となるバリの数を低減することができる。As described above, according to the present invention,
Burrs generated during cutting and filling of the active material are suppressed by cutting the core, rolling the periphery of the core after filling with the active material, and thinning the periphery makes it more difficult for burr to pop out than the thickness of the central portion of the electrode. Therefore, the number of burrs that cause a short circuit can be reduced.
【００２７】または周囲を削りとることにより、バリは
削り取らとれる。さらに、周囲の圧延、周囲の削り取
り、いずれの工程も、バリの発生する芯体切断の工程及
び活物質充填の工程の後に行なうことによって確実にバ
リの数を低減するとができる。Alternatively, the burrs can be removed by scraping off the periphery. Furthermore, the number of burrs can be surely reduced by performing the rolling of the periphery and the scraping of the periphery after the step of cutting the core body in which burrs are generated and the step of filling the active material.
【図１】ベース電極の周囲を圧延する方法を示す図であ
る。FIG. 1 is a diagram showing a method of rolling around a base electrode.
【図２】完成電極の断面図である。FIG. 2 is a sectional view of a completed electrode.
【図３】ベース電極の周囲を削り取る方法を示す図であ
る。FIG. 3 is a diagram showing a method of scraping off the periphery of a base electrode.
【図４】ベース電極の周囲を削り取る方法を示す図であ
る。FIG. 4 is a diagram showing a method of scraping off the periphery of a base electrode.
【図５】完成電極の断面図である。FIG. 5 is a cross-sectional view of the completed electrode.
【図６】比較例の電極の断面図である。FIG. 6 is a sectional view of an electrode of a comparative example.
【図７】バリの生じる過程を説明する図である。FIG. 7 is a diagram illustrating a process in which burrs are generated.
１ ベース電極 ２ 加圧機 ３ ステンレス球 1 Base electrode 2 Pressurizer 3 Stainless steel ball
Claims (2)
が充填された状態で芯体を所定の形状に切断した後、或
いは、３次元多孔体を所定の形状に切断し、切断された
芯体に活物質を充填した後に、上記芯体の周囲を圧延
し、周囲の厚さを薄くすることを特徴とする電極の製造
方法。1. A three-dimensional porous body is filled with an active material, and the core body is cut into a predetermined shape with the active material filled, or the three-dimensional porous body is cut into a predetermined shape and then cut. A method for manufacturing an electrode, comprising: filling the core body thus prepared with an active material; and rolling the periphery of the core body to reduce the thickness of the periphery.
が充填された状態で芯体を所定の形状に切断した後、或
いは、３次元多孔体を所定の形状に切断し、切断された
芯体に活物質を充填した後に、上記芯体の周囲を削り取
り周囲の厚さを薄くすることを特徴とする電極の製造方
法。2. A three-dimensional porous body is filled with an active material, and the core body is cut into a predetermined shape with the active material filled, or the three-dimensional porous body is cut into a predetermined shape and then cut. A method for manufacturing an electrode, characterized in that after the filled core body is filled with an active material, the periphery of the core body is shaved off to reduce the thickness of the periphery.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP17911794A JP3349268B2 (en) | 1994-07-29 | 1994-07-29 | Electrode manufacturing method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP17911794A JP3349268B2 (en) | 1994-07-29 | 1994-07-29 | Electrode manufacturing method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0845500A true JPH0845500A (en) | 1996-02-16 |
| JP3349268B2 JP3349268B2 (en) | 2002-11-20 |
Family
ID=16060313
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP17911794A Expired - Lifetime JP3349268B2 (en) | 1994-07-29 | 1994-07-29 | Electrode manufacturing method |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3349268B2 (en) |
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6416559B1 (en) | 1999-05-14 | 2002-07-09 | Matsushita Electric Industrial Co., Ltd. | Method for manufacturing electrodes for battery |
| US6620213B2 (en) | 2000-05-10 | 2003-09-16 | Matsushita Electric Industrial Co., Ltd. | Method for manufacturing electrode plate for battery |
| JP2004303963A (en) * | 2003-03-31 | 2004-10-28 | Nissan Diesel Motor Co Ltd | Electric double layer capacitor and its manufacturing method |
| JP2005277064A (en) * | 2004-03-24 | 2005-10-06 | Tdk Corp | Electrode and method for manufacturing the same and method for manufacturing electrochemical device and electrochemical device |
| KR100515823B1 (en) * | 1998-12-14 | 2005-12-02 | 삼성에스디아이 주식회사 | Manufacturing method of lithium ion polymer battery |
| CN100347883C (en) * | 2006-01-20 | 2007-11-07 | 深圳市豪鹏科技有限公司 | Manufacturing method of negative electrode plate of Ni-H cell |
| CN100396410C (en) * | 2004-06-29 | 2008-06-25 | Tdk株式会社 | Slitter apparatus and production method of electrode |
| US20080157779A1 (en) * | 2006-12-28 | 2008-07-03 | Panasonic Ev Energy Co., Ltd. | Prismatic battery short circuit inspection method, prismatic battery manufacturing method and current collector shape adjusting device |
| JP2008176939A (en) * | 2007-01-16 | 2008-07-31 | Matsushita Electric Ind Co Ltd | Electrode plate of nonaqueous electrolyte secondary battery, its manufacturing method, and nonaqueous electrolyte secondary battery |
| JP2017168634A (en) * | 2016-03-16 | 2017-09-21 | 太陽誘電株式会社 | Electrode for electrochemical device, electrochemical device, method for manufacturing electrode for electrochemical device, and method for manufacturing electrochemical device |
| CN114883576A (en) * | 2022-05-09 | 2022-08-09 | 江苏正力新能电池技术有限公司 | Battery core, battery module and battery pack |
| CN114883576B (en) * | 2022-05-09 | 2024-05-24 | 江苏正力新能电池技术有限公司 | Electric core, battery module and battery package |
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Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100515823B1 (en) * | 1998-12-14 | 2005-12-02 | 삼성에스디아이 주식회사 | Manufacturing method of lithium ion polymer battery |
| US6416559B1 (en) | 1999-05-14 | 2002-07-09 | Matsushita Electric Industrial Co., Ltd. | Method for manufacturing electrodes for battery |
| US6620213B2 (en) | 2000-05-10 | 2003-09-16 | Matsushita Electric Industrial Co., Ltd. | Method for manufacturing electrode plate for battery |
| JP2004303963A (en) * | 2003-03-31 | 2004-10-28 | Nissan Diesel Motor Co Ltd | Electric double layer capacitor and its manufacturing method |
| JP2005277064A (en) * | 2004-03-24 | 2005-10-06 | Tdk Corp | Electrode and method for manufacturing the same and method for manufacturing electrochemical device and electrochemical device |
| CN100396410C (en) * | 2004-06-29 | 2008-06-25 | Tdk株式会社 | Slitter apparatus and production method of electrode |
| US7507435B2 (en) | 2004-06-29 | 2009-03-24 | Tdk Corporation | Slitter apparatus and production method of electrode |
| CN100347883C (en) * | 2006-01-20 | 2007-11-07 | 深圳市豪鹏科技有限公司 | Manufacturing method of negative electrode plate of Ni-H cell |
| US20080157779A1 (en) * | 2006-12-28 | 2008-07-03 | Panasonic Ev Energy Co., Ltd. | Prismatic battery short circuit inspection method, prismatic battery manufacturing method and current collector shape adjusting device |
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| US8555695B2 (en) | 2006-12-28 | 2013-10-15 | Panasonic Ev Energy Co., Ltd. | Current collector shape adjusting device |
| JP2008176939A (en) * | 2007-01-16 | 2008-07-31 | Matsushita Electric Ind Co Ltd | Electrode plate of nonaqueous electrolyte secondary battery, its manufacturing method, and nonaqueous electrolyte secondary battery |
| JP2017168634A (en) * | 2016-03-16 | 2017-09-21 | 太陽誘電株式会社 | Electrode for electrochemical device, electrochemical device, method for manufacturing electrode for electrochemical device, and method for manufacturing electrochemical device |
| CN114883576A (en) * | 2022-05-09 | 2022-08-09 | 江苏正力新能电池技术有限公司 | Battery core, battery module and battery pack |
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