JPS58106767A - Manufacture of button-type alkaline battery - Google Patents
Manufacture of button-type alkaline batteryInfo
- Publication number
- JPS58106767A JPS58106767A JP20500281A JP20500281A JPS58106767A JP S58106767 A JPS58106767 A JP S58106767A JP 20500281 A JP20500281 A JP 20500281A JP 20500281 A JP20500281 A JP 20500281A JP S58106767 A JPS58106767 A JP S58106767A
- Authority
- JP
- Japan
- Prior art keywords
- sodium polyacrylate
- electrolyte
- negative
- sheet
- battery
- 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
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M6/00—Primary cells; Manufacture thereof
- H01M6/04—Cells with aqueous electrolyte
- H01M6/06—Dry cells, i.e. cells wherein the electrolyte is rendered non-fluid
- H01M6/12—Dry cells, i.e. cells wherein the electrolyte is rendered non-fluid with flat electrodes
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Primary Cells (AREA)
- Battery Electrode And Active Subsutance (AREA)
Abstract
Description
【発明の詳細な説明】
本発明はボタン形アルカリ電池の製造法に関するＯ
アルカリ電池においてに、負極亜鉛の不働態化の防止な
どをはかるため、ゲル化剤としてポリアクリル酸ナトリ
ウムを絵加することが多く行なわれている。[Detailed Description of the Invention] The present invention relates to a method for manufacturing a button-type alkaline battery. is being done a lot.
ところが、ポリアクリル酸ナトリウムと氷化亜鉛との比
嵐差が大きいので、氷化亜鉛粉末とポリアクリル酸ナト
リウムとの均一な混合物が得られがたく、氷化亜鉛とポ
リアクリル酸ナトリウムとの混合比がバラライて活物質
の光撫蓋に変動を米すうえに、ポリアクリル酸ナトリウ
ムが水分を吸収して秤量が正確に行なわれなくなって、
秤量イ１そのものにも変動を来すようになる。However, because the difference in specificity between sodium polyacrylate and glazed zinc is large, it is difficult to obtain a homogeneous mixture of glazed zinc powder and sodium polyacrylate. Not only do the ratios vary, causing fluctuations in the active material's optical properties, but also the sodium polyacrylate absorbs moisture, making it difficult to measure accurately.
The weight A1 itself also begins to fluctuate.
そこで、両者をそれぞれ別々に秤量することも考えられ
るが、氷化亜鉛の秤量精度は向上するものの、静電気に
よるポリアクリル酸ナトリウムの飛散やポリアクリル酸
ナトリウムの水分吸着などがあって、必すしも好ましい
ものとはいえない〇また、粉末状のポリアクリル酸ナト
リウムを用磨いているかぎり、負極缶に充填しその上か
ら電解液を注入したときに、注入時の圧力でポリアクリ
ル酸ナトリウムが外部へ飛散することが生じる・そして
、この電解液注入時のポリアクリル酸ナトリウムの外部
飛散による弊害は、電池が薄形化するほど顕在化してき
て、薄形の電池を製造する際に大きな障害となる。Therefore, it may be possible to weigh both separately, but although this improves the accuracy of weighing frozen zinc, it is not always recommended because the sodium polyacrylate may scatter due to static electricity and the sodium polyacrylate may absorb water. This is not desirable〇Also, as long as powdered sodium polyacrylate is used for polishing, when the negative electrode can is filled and electrolyte is injected from above, the sodium polyacrylate will be exposed to the outside due to the pressure at the time of injection. This problem caused by sodium polyacrylate scattering to the outside when the electrolyte is injected becomes more obvious as the battery becomes thinner, and becomes a major hindrance when manufacturing thinner batteries. Become.
本−明はそのような事情に鑑みてなされたものであシ、
ポリアクリル酸ナトリウムをシート化し、これを打ち抜
いて負極缶に挿入することにより、ポリアクリル酸ナト
リウムおよび氷化亜鉛の秤量精度をあげ、かつ電解液注
入時のポリアクリル鈑ナトリウムの飛散を防止したもの
である。This book was created in view of such circumstances.
By forming a sheet of sodium polyacrylate, punching it out, and inserting it into the negative electrode can, the accuracy of weighing the sodium polyacrylate and zinc oxide is increased, and the scattering of the sodium polyacrylate sheet is prevented when the electrolyte is injected. It is.
つぎに本発明の実施例を図面とともに説明する。Next, embodiments of the present invention will be described with reference to the drawings.
絢縁折り返し部に環状ガスケット（１）を嵌着した負極
缶（２）に、氷化亜鉛粉末（３）を充填し、ついで電解
液（４）を注入したのち、ポリアクリル酸ナトリウム（
架橋ポリアクリル酸ナトリウム）のシート（５）を挿入
する（第１図参照）０
これとは別に、正極缶（７）に二酸化マンガンを活物質
とする正極合剤（８）を挿入し、−該正極合剤（８）上
Ｋｆｌ孔性ポリプロピレンフィルムとセロハントラ積′
ＭＬＦｆてなるセパレータ（９）およびビニロン−レー
ヨン混抄紙よシなる電解液吸収体（７）を載置し、この
状態の正極缶（７）をその上下を反転させて前記負極缶
（２） Ｋ嵌合し、正極缶（７）の開口部周壁を内方へ
締め付けて彎曲させその内周面を環状ガスケット（１）
に圧接させて封口することによシミ池を製造した０
第２図は上記のようにして製造された電池を示す断面−
である０ただし、製造工程中とは上下を反転した状態で
示されている０第２図において、（６）は前記ポリアク
リル酸ナトリウムシート（５）が電解液（４）Ｋ溶け、
水化亜鉛（３）と混ざさって形成された負極剤である。A negative electrode can (2) with an annular gasket (1) fitted to the folded edge part is filled with frozen zinc powder (3), then an electrolyte (4) is injected, and then sodium polyacrylate (
Insert a sheet (5) of cross-linked sodium polyacrylate (see Figure 1) Separately, insert a positive electrode mixture (8) containing manganese dioxide as an active material into the positive electrode can (7), and - The product of the Kfl porous polypropylene film and cellophane layer on the positive electrode mixture (8)
A separator (9) made of MLFf and an electrolyte absorber (7) made of vinylon-rayon mixed paper are placed thereon, and the positive electrode can (7) in this state is turned upside down to form the negative electrode can (2) K. Once fitted, the opening peripheral wall of the positive electrode can (7) is tightened inward and curved, and its inner peripheral surface is covered with an annular gasket (1).
A stain pond was manufactured by press-fitting and sealing the battery.0 Figure 2 shows a cross section of the battery manufactured as described above.
0 However, in FIG. 2, which is shown upside down from the manufacturing process, (6) means that the sodium polyacrylate sheet (5) is dissolved in the electrolytic solution (4) K,
It is a negative electrode material formed by mixing with zinc hydrate (3).
なお、（ロ）は正極合剤（８）の加圧成形時に正極合剤
（８）の周縁部に固着させたステンレス鋼製の環状台座
である。Note that (b) is a stainless steel annular pedestal fixed to the peripheral edge of the positive electrode mixture (8) during pressure molding of the positive electrode mixture (8).
本発明において、ポリアクリル酸ナトリウムシートの負
極缶への挿入は、上述のように電解液の注入後に行なう
のが好ましいが、その場合のみに限られるものではなく
、水化亜鉛の充填後挿入し、そののち電解液を注入して
もよいし、また氷化亜鉛の充填にさきたって挿入しても
よい０負極缶内に挿入したポリアクリル酸ナトリウムシ
ートは負極缶内で電解液に溶は氷化亜鉛と混ざるので、
粉末状で水化亜鉛と混合する場合に比べてとくに電気性
能の低下を生じるようなことはない。そして、ポリアク
リル酸ナトリウムの添加蓋としては、粉末状のものを用
いる場合と同様に水化亜鉛１００部（重量部、以下同様
）に対して０．５〜５部程度でよい。In the present invention, the sodium polyacrylate sheet is preferably inserted into the negative electrode can after filling the electrolyte as described above, but is not limited to this case. After that, the electrolyte may be injected, or the sodium polyacrylate sheet inserted into the negative electrode can may be inserted before filling with frozen zinc. Because it mixes with zinc chloride,
Compared to when it is mixed with zinc hydride in powder form, there is no particular deterioration in electrical performance. The addition cap for sodium polyacrylate may be about 0.5 to 5 parts per 100 parts (parts by weight, hereinafter the same) of zinc hydride, as in the case of using a powdered product.
つぎの第１表は本発明により秤量した場合と従来法によ
り秤量した場合との秤量精度を比較して示すものである
。The following Table 1 shows a comparison of the weighing accuracy between the case of weighing according to the present invention and the case of weighing according to the conventional method.
本発明による場合は水化亜鉛粉末のみを秤量し、従来法
による場合は氷化亜鉛粉末１００部に対してポリアクリ
ル酸ナトリウム粉末を１部の割合で添加した混合粉末を
秤量したものであシ、秤量は両者ともマス切り方式によ
るものであるＯ第 １ 表
第１表に示すように、本発明の方法による場合は氷化亜
鉛のみを粉体で秤量するので秤量値のノ（ラツキが少な
い。そして本発明の方法によればポリアクリル酸ナトリ
ウムはシート状で秤量するので秤量値のバラツキが非常
に少なくなるし、また電解液注入時のポリアクリル酸ナ
トリウムの飛散はもちろん生じない０In the case of the present invention, only zinc hydrate powder is weighed, and in the case of the conventional method, a mixed powder in which 1 part of sodium polyacrylate powder is added to 100 parts of frozen zinc powder is weighed. Table 1 As shown in Table 1, in the method of the present invention, only the frozen zinc is weighed as a powder, so the weighing value is less uneven. According to the method of the present invention, sodium polyacrylate is weighed in the form of a sheet, so there is very little variation in the weighed values, and of course there is no scattering of sodium polyacrylate when the electrolyte is injected.
第１図は本発明の方法によシボリアクリル酸ナトリウム
シートを負極缶に挿入した状態を模式的に示す断面図、
第２図は本発明の方法によシ製造されたボタン形アルカ
リ電池の断面図である。
（２）・・・負極缶、（５）・・・ポリアクリル酸ナト
リウムのシート
特許出願人 日立マクセル株式会社FIG. 1 is a cross-sectional view schematically showing a state in which a shibori sodium acrylate sheet is inserted into a negative electrode can by the method of the present invention;
FIG. 2 is a sectional view of a button-type alkaline battery manufactured by the method of the present invention. (2)...Anode can, (5)...Sodium polyacrylate sheet Patent applicant: Hitachi Maxell, Ltd.
Claims (1)
ート状で負極缶に挿入することを特徴とするボタン形ア
ルカリ電池の製造法。1. A method for producing a button-type alkaline battery, which comprises inserting a sheet of sodium polyacrylate as a gelling agent into a negative electrode can.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP20500281A JPS58106767A (en) | 1981-12-17 | 1981-12-17 | Manufacture of button-type alkaline battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP20500281A JPS58106767A (en) | 1981-12-17 | 1981-12-17 | Manufacture of button-type alkaline battery |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS58106767A true JPS58106767A (en) | 1983-06-25 |
Family
ID=16499819
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP20500281A Pending JPS58106767A (en) | 1981-12-17 | 1981-12-17 | Manufacture of button-type alkaline battery |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS58106767A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60182666A (en) * | 1984-02-28 | 1985-09-18 | Toshiba Battery Co Ltd | Manufacture of nonaqueous electrolyte battery |
| JPH0613071A (en) * | 1992-06-29 | 1994-01-21 | Matsushita Electric Ind Co Ltd | Manufacture of negative electrode for button type alkaline battery |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5328823B1 (en) * | 1970-06-03 | 1978-08-17 |
-
1981
- 1981-12-17 JP JP20500281A patent/JPS58106767A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5328823B1 (en) * | 1970-06-03 | 1978-08-17 |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60182666A (en) * | 1984-02-28 | 1985-09-18 | Toshiba Battery Co Ltd | Manufacture of nonaqueous electrolyte battery |
| JPH0613071A (en) * | 1992-06-29 | 1994-01-21 | Matsushita Electric Ind Co Ltd | Manufacture of negative electrode for button type alkaline battery |
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