JPH0429187B2 - - Google Patents
Info
- Publication number
- JPH0429187B2 JPH0429187B2 JP58053214A JP5321483A JPH0429187B2 JP H0429187 B2 JPH0429187 B2 JP H0429187B2 JP 58053214 A JP58053214 A JP 58053214A JP 5321483 A JP5321483 A JP 5321483A JP H0429187 B2 JPH0429187 B2 JP H0429187B2
- Authority
- JP
- Japan
- Prior art keywords
- active material
- positive electrode
- current collector
- plate
- electrode plate
- 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.)
- Expired - Lifetime
Links
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims description 17
- 239000011149 active material Substances 0.000 claims description 15
- 229910052759 nickel Inorganic materials 0.000 claims description 8
- 238000004519 manufacturing process Methods 0.000 claims description 7
- 239000000463 material Substances 0.000 claims description 6
- 239000011230 binding agent Substances 0.000 claims description 2
- 238000000034 method Methods 0.000 description 8
- 238000007796 conventional method Methods 0.000 description 4
- KWYUFKZDYYNOTN-UHFFFAOYSA-M Potassium hydroxide Chemical compound [OH-].[K+] KWYUFKZDYYNOTN-UHFFFAOYSA-M 0.000 description 3
- 239000007864 aqueous solution Substances 0.000 description 3
- 230000002950 deficient Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 239000011148 porous material Substances 0.000 description 3
- 239000000758 substrate Substances 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 238000007599 discharging Methods 0.000 description 2
- 239000007774 positive electrode material Substances 0.000 description 2
- 229920001875 Ebonite Polymers 0.000 description 1
- 239000004677 Nylon Substances 0.000 description 1
- 230000002159 abnormal effect Effects 0.000 description 1
- 230000005856 abnormality Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- OJIJEKBXJYRIBZ-UHFFFAOYSA-N cadmium nickel Chemical compound [Ni].[Cd] OJIJEKBXJYRIBZ-UHFFFAOYSA-N 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000010924 continuous production Methods 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000003792 electrolyte Substances 0.000 description 1
- 230000001747 exhibiting effect Effects 0.000 description 1
- 238000005429 filling process Methods 0.000 description 1
- 238000005470 impregnation Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- LGQLOGILCSXPEA-UHFFFAOYSA-L nickel sulfate Chemical compound [Ni+2].[O-]S([O-])(=O)=O LGQLOGILCSXPEA-UHFFFAOYSA-L 0.000 description 1
- 229910000363 nickel(II) sulfate Inorganic materials 0.000 description 1
- KBJMLQFLOWQJNF-UHFFFAOYSA-N nickel(ii) nitrate Chemical compound [Ni+2].[O-][N+]([O-])=O.[O-][N+]([O-])=O KBJMLQFLOWQJNF-UHFFFAOYSA-N 0.000 description 1
- 239000004745 nonwoven fabric Substances 0.000 description 1
- 229920001778 nylon Polymers 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
- 238000004804 winding 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
- 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
-
- 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
- H01M4/64—Carriers or collectors
- H01M4/70—Carriers or collectors characterised by shape or form
- H01M4/80—Porous plates, e.g. sintered carriers
- H01M4/808—Foamed, spongy materials
-
- 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)
- Connection Of Batteries Or Terminals (AREA)
Description
【発明の詳細な説明】
本発明は、スポンジ状ニツケル多孔体に活物質
を充填して成るアルカリ電池用正極板の製造装置
に関するもので、連続帯状、すなわちフープ状の
スポンジ状ニツケル多孔体の供給方法を改良する
ことによつて、集電端子の取付けを確実に行なう
ことを目的とするものである。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an apparatus for producing a positive electrode plate for an alkaline battery, which is formed by filling a sponge-like porous nickel material with an active material, and the present invention relates to an apparatus for producing a positive electrode plate for an alkaline battery, which is made by filling a sponge-like porous nickel material with an active material. The purpose of this invention is to ensure that the current collector terminals are attached by improving the method.
従来、アルカリ電池の正極板の基板としては、
ニツケル粉末の焼結体が用いられているが、その
多孔度は70〜80％程度であり、これ以上に多孔度
を上げると、その機械的強度が著しく減少し、し
たがつてその空隙内に正極活物質を充填した場合
に、基板の変形、亀裂や活物質の剥離等を招来す
る欠点があつた。また、活物質を充填する場合、
通常、減圧含浸法とよばれる方法、すなわち硝酸
ニツケルや硫酸ニツケル等の塩の水溶液を基板に
減圧含浸したのち、アルカリ水溶液で処理し、さ
らに湯洗、乾燥するという操作を繰り返す方法が
とられている。しかしながら、一回の操作によつ
て充填される量は少く、しかも、２回目から充填
される量は次第に減少してくるので通常４〜10回
の操作を繰り返す必要がある。そのため製造工程
が複雑で経済的コストが高くなるという欠点があ
つた。 Conventionally, the substrate for the positive electrode plate of alkaline batteries is
A sintered body of nickel powder is used, but its porosity is about 70 to 80%, and increasing the porosity beyond this will significantly reduce its mechanical strength, and therefore When filled with a positive electrode active material, there were drawbacks such as deformation and cracking of the substrate and peeling of the active material. In addition, when filling the active material,
Normally, a method called vacuum impregnation method is used, in which the substrate is impregnated under reduced pressure with an aqueous solution of salts such as nickel nitrate or nickel sulfate, treated with an alkaline aqueous solution, and then washed with hot water and dried. There is. However, the amount to be filled in one operation is small, and the amount to be filled in the second operation gradually decreases, so it is usually necessary to repeat the operation 4 to 10 times. Therefore, the manufacturing process is complicated and the economic cost is high.
そこで近年、三次元的に連続した製造を有する
ニツケル金属よりなるスポンジ状多孔体に、ペー
スト状にした正極活物質を直接充填するものが注
目されてきている。 Therefore, in recent years, attention has been paid to methods in which a three-dimensionally continuous sponge-like porous body made of nickel metal is directly filled with a positive electrode active material in the form of a paste.
三次元的に連続した構造を有するスポンジ状ニ
ツケル多孔体は、その多孔度が90〜98％と高く、
しかも機械的強度が大きい。そのうえ、孔径が大
きいのでこの多孔体に活物質を充填すると正極板
の高容量化を図る事が出来ると共に充填が極めて
簡便になり連続工程が可能で経済的にも有利とな
る。しかしながら、このスポンジ状の多孔体は従
来の焼結式極板のように鉄にニツケルメツキをし
た穿孔板やニツケル網を使用していないので集電
端子の取付けが難しい。そのうえに、活物質を充
填した後にスポツト溶接等によつて集電端子を取
付けると、活物質や結着剤等が大きな電気抵抗と
なつて火花が発生し、その取付けは極めて困難と
なる。そこで予め集電端子を取付けた多孔体に活
物質を充填することも考えられるが、集電端子が
妨げとなつて充填の能率が低下し、また充填の際
に集電端子がはずれやすいという欠点がある。ま
た、多孔体の集電端子取付け部分を加圧して活物
質が充填されないようにすることが提案されてい
るが、この場合も集電端子取付け部分への若干の
活物質や結着剤の付着は免れず、集電端子の取付
けが不完全になる場合があり、なお充分ではなか
つた。 Sponge-like porous nickel material with a three-dimensional continuous structure has a high porosity of 90 to 98%.
Moreover, it has high mechanical strength. Moreover, since the pore size is large, filling this porous body with an active material can increase the capacity of the positive electrode plate, and the filling process is extremely simple, allowing a continuous process, which is economically advantageous. However, unlike conventional sintered electrode plates, this sponge-like porous body does not use perforated plates made of nickel-plated iron or nickel mesh, so it is difficult to attach current collector terminals. Moreover, if a current collector terminal is attached by spot welding or the like after filling the active material, the active material, binder, etc. will have a large electrical resistance and sparks will be generated, making the attachment extremely difficult. Therefore, it is possible to fill a porous body with a current collector terminal attached in advance with the active material, but the drawback is that the current collector terminal becomes an obstruction, reducing filling efficiency, and the current collector terminal is likely to come off during filling. There is. In addition, it has been proposed to pressurize the part of the porous body where the current collector terminal is attached to prevent it from being filled with active material. However, there were cases where the current collecting terminals were not completely installed, which was still not sufficient.
本発明は上記のような欠点を解決すべくなされ
たものであり、フープ状のスポンジ状ニツケル多
孔体を、その集電端子取付け部に相当する部分を
その厚さ方向から挟持して、活物質充填装置等の
一連の製造装置に供給することによつてこの部分
の活物質等の付着を防止し、集電端子の取付けの
確実性を向上させたものである。 The present invention has been made in order to solve the above-mentioned drawbacks, and the present invention is made by sandwiching a hoop-like sponge-like porous nickel material from the thickness direction of the part corresponding to the current collector terminal attachment part, and then inserting the active material into the hoop-like sponge-like porous material. By supplying it to a series of manufacturing devices such as a filling device, it is possible to prevent the active material from adhering to this portion and improve the reliability of attachment of the current collector terminal.
以下、本発明の実施例ならびにその効果を図面
に基づき説明する。本発明によるフープ状多孔体
の供給方法を説明するための概略図を第１図に示
す。第２図は第１図のＡ−A′断面図である。支
持板３の上に配置されたフープ状多孔体２は、板
状の突手部１を有する保持具４によつて集電端子
取付け部５に相当する部分を厚さ方向から挟まれ
ており、保持具４を移動させることによつて支持
板３上を移動し、一連の製造装置に連続的に供給
される。また、このフープ状多孔体は軽い加圧に
よつて容易に変形するために、板状の突手部１に
よつて挟む際の圧力を調節することによつて第２
図に示すように集電端子取付け部５を圧縮形成す
ることができる。その場合、板状の突手部１の表
面とフープ状多孔体２の表面が同一平面を形成す
るように調節すると、極板面の凹凸がなくなり、
その後の活物質の充填等の一連の工程の能率が向
上するという利点もある。なお、保持具４の材質
として硬質ゴムやプラスチツク等の可撓性に富ん
だものを用いることによつて、保持具４はベルト
状にして連続的に用いることができる。本発明に
よる製造装置を用いて製作した正極板には集電端
子取付け部５に活物質等の絶縁性物質が全く付着
しないために、集電端子の取付けは極めて容易
で、かつ確実であつた。この正極板１枚と従来か
ら公知のペースト式負極板１枚とをナイロン不織
布のセパレータを介して渦巻状に巻き、電解液と
してS.G1300（20℃）水酸化カリウム水溶液を用
いて、公称容量2.5Ahの単２形の円筒形密閉ニツ
ケル−カドミウム電池Ａを製作した。比較のため
に、フープ状多孔体の集電端子取付け部を加圧し
て活物質を充填するという従来の方法によつて製
作した正極板を用いた電池Ｂを製作した。これら
の電池をそれぞれ500セルずつ製作した。極板製
造時から電池組立完了時までに発生した集電端子
取付け部のはがれや、その取付け不良に基づく化
成時（0.1CA充電、1CA放電）の充放電電圧の異
常（充電電圧が1.6V以上あるいは放電開始後20
分目の電圧が1.2Vより低いもの）を呈した個数
を表１に示す。表１からもわかるように、本発明
による電池の不良発生は皆無なのに対して従来の
方法では約10％にあたる48個の不良が発生した。 Embodiments of the present invention and their effects will be described below with reference to the drawings. A schematic diagram for explaining the method for supplying a hoop-shaped porous body according to the present invention is shown in FIG. FIG. 2 is a sectional view taken along line A-A' in FIG. The hoop-shaped porous body 2 placed on the support plate 3 is sandwiched in the thickness direction by a holder 4 having a plate-shaped protrusion 1 at a portion corresponding to the current collector terminal attachment part 5. , by moving the holder 4 on the support plate 3, and is continuously supplied to a series of manufacturing devices. In addition, since this hoop-shaped porous body is easily deformed by light pressure, the second
As shown in the figure, the current collector terminal attachment portion 5 can be formed by compression. In that case, if the surface of the plate-shaped protrusion 1 and the surface of the hoop-shaped porous body 2 are adjusted to form the same plane, the unevenness of the electrode plate surface will be eliminated.
Another advantage is that the efficiency of a series of subsequent steps such as filling with active material is improved. By using a highly flexible material such as hard rubber or plastic for the holder 4, the holder 4 can be made into a belt and used continuously. Since no insulating material such as active material adhered to the current collector terminal mounting portion 5 of the positive electrode plate manufactured using the manufacturing apparatus according to the present invention, the current collector terminal could be attached extremely easily and reliably. . This one positive electrode plate and one conventionally known paste-type negative electrode plate were wound spirally through a nylon nonwoven fabric separator, and using S.G1300 (20℃) potassium hydroxide aqueous solution as the electrolyte, the A 2.5Ah AA cylindrical sealed nickel-cadmium battery A was manufactured. For comparison, a battery B was fabricated using a positive electrode plate fabricated by a conventional method in which the collector terminal attachment portion of the hoop-shaped porous body was filled with an active material by applying pressure. We manufactured 500 cells of each of these batteries. Abnormal charging/discharging voltage during formation (0.1CA charging, 1CA discharging) due to peeling of the collector terminal mounting part or poor installation that occurred from the time of electrode plate manufacture to the completion of battery assembly (charging voltage is 1.6V or higher) Or 20 minutes after the start of discharge
Table 1 shows the number of samples exhibiting voltage lower than 1.2V. As can be seen from Table 1, there were no defects in the battery according to the present invention, whereas 48 defects, which is about 10%, occurred in the conventional method.
表１ 不良発生数（個数）
不良発生個数
本発明によるもの ０
従来法によるもの 48
このように従来法による場合に不良率が大きく
なつた原因を調べると集電端子がはがれたり、あ
るいはつづく巻工程等の組立工程で取付け部が弱
くなり電池として充放電した場合に電圧異常とな
ることが判明した。 Table 1 Number of defective products (number) Number of defective products According to the present invention 0 According to the conventional method 48 When examining the reasons why the defective rate increased when using the conventional method, it was found that the current collecting terminal peeled off, or the subsequent winding process It was discovered that the attachment part became weak during the assembly process, resulting in voltage abnormalities when charged and discharged as a battery.
以上述べたように、本発明によれば集電端子の
取付けが確実に行なうことができる。 As described above, according to the present invention, the current collecting terminal can be reliably attached.
第１図は本発明によるフープ状多孔体の供給方
法を説明するための概略図、第２図は第１図のＡ
−A′断面図である。
１……突手部、２……フープ状多孔体、４……
フープ状多孔体の保持具。
FIG. 1 is a schematic diagram for explaining the method for supplying a hoop-shaped porous body according to the present invention, and FIG. 2 is a diagram showing A of FIG.
-A' sectional view. 1... Protrusion portion, 2... Hoop-shaped porous body, 4...
Holder for hoop-shaped porous material.
Claims (1)
し、活物質充填装置及び結着剤含浸装置等の一連
の製造装置に連続的に供給するための供給装置を
備えたアルカリ電池用正極板製造装置であつて、 該供給装置は支持板上を移動する保持具を備
え、 該保持具は板状の突手部を有し、 該板状の突手部は少くとも該スポンジ状ニツケ
ル多孔体の集電端子取付部に相当する部分をその
厚さ方向から挟持するものであることを特徴とす
る アルカリ電池用正極板製造装置。[Scope of Claims] 1. An alkaline battery equipped with a feeding device for holding a hoop-shaped sponge-like porous nickel material and continuously feeding it to a series of manufacturing devices such as an active material filling device and a binder impregnating device. a positive electrode plate manufacturing apparatus, the feeding device includes a holder that moves on a support plate, the holder has a plate-shaped protrusion, and the plate-shaped protrusion has at least the sponge. 1. An apparatus for producing a positive electrode plate for an alkaline battery, characterized in that a portion of a nickel porous body corresponding to a current collector terminal attachment portion is held in the thickness direction thereof.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP58053214A JPS59177856A (en) | 1983-03-28 | 1983-03-28 | Manufacturing apparatus of positive plate for alkaline battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP58053214A JPS59177856A (en) | 1983-03-28 | 1983-03-28 | Manufacturing apparatus of positive plate for alkaline battery |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS59177856A JPS59177856A (en) | 1984-10-08 |
| JPH0429187B2 true JPH0429187B2 (en) | 1992-05-18 |
Family
ID=12936580
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP58053214A Granted JPS59177856A (en) | 1983-03-28 | 1983-03-28 | Manufacturing apparatus of positive plate for alkaline battery |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS59177856A (en) |
-
1983
- 1983-03-28 JP JP58053214A patent/JPS59177856A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS59177856A (en) | 1984-10-08 |
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