JPH0218924Y2 - - Google Patents
Info
- Publication number
- JPH0218924Y2 JPH0218924Y2 JP17622883U JP17622883U JPH0218924Y2 JP H0218924 Y2 JPH0218924 Y2 JP H0218924Y2 JP 17622883 U JP17622883 U JP 17622883U JP 17622883 U JP17622883 U JP 17622883U JP H0218924 Y2 JPH0218924 Y2 JP H0218924Y2
- Authority
- JP
- Japan
- Prior art keywords
- separator
- positive electrode
- negative electrode
- positive
- circumference
- 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
Links
- 238000012856 packing Methods 0.000 claims description 14
- 230000002093 peripheral effect Effects 0.000 claims description 8
- 238000009413 insulation Methods 0.000 claims description 3
- NUJOXMJBOLGQSY-UHFFFAOYSA-N manganese dioxide Chemical compound O=[Mn]=O NUJOXMJBOLGQSY-UHFFFAOYSA-N 0.000 description 4
- 229910052751 metal Inorganic materials 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 239000011255 nonaqueous electrolyte Substances 0.000 description 2
- 229910001220 stainless steel Inorganic materials 0.000 description 2
- 239000010935 stainless steel Substances 0.000 description 2
- 230000008961 swelling Effects 0.000 description 2
- QPLDLSVMHZLSFG-UHFFFAOYSA-N Copper oxide Chemical compound [Cu]=O QPLDLSVMHZLSFG-UHFFFAOYSA-N 0.000 description 1
- 239000005751 Copper oxide Substances 0.000 description 1
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 1
- 239000004743 Polypropylene Substances 0.000 description 1
- 239000011149 active material Substances 0.000 description 1
- 229910000431 copper oxide Inorganic materials 0.000 description 1
- 229910052744 lithium Inorganic materials 0.000 description 1
- 239000004745 nonwoven fabric Substances 0.000 description 1
- -1 polypropylene Polymers 0.000 description 1
- 229920001155 polypropylene Polymers 0.000 description 1
- 239000007774 positive electrode material Substances 0.000 description 1
Classifications
-
- Y02E60/12—
Landscapes
- Sealing Battery Cases Or Jackets (AREA)
- Cell Separators (AREA)
Description
【考案の詳細な説明】
(イ) 産業上の利用分野
本考案は放電反応に伴い膨潤する正極上にセパ
レータを介して負極を載置すると共に正負極外装
ケース間を絶縁する環状絶縁パツキングと正極と
によりセパレータの周縁部を挾持する構造の扁平
型電池に関するものである。[Detailed description of the invention] (a) Industrial application field This invention places a negative electrode via a separator on a positive electrode that swells due to a discharge reaction, and also uses an annular insulating packing that insulates between the positive and negative electrode outer cases, and a positive electrode. This invention relates to a flat battery having a structure in which the peripheral edge of the separator is held between the two.
(ロ) 従来技術
この種電池の一例として第１図に示す電池構造
が実公昭57−44618号公報に開示されている。(b) Prior Art As an example of this type of battery, a battery structure shown in FIG. 1 is disclosed in Japanese Utility Model Publication No. 57-44618.
第１図において、１は正極外装ケースであつて
その内底面には正極２が配設されている。３は正
極上にセパレータ４を介して配置された負極であ
り負極外装ケース５の内底面に圧接されている。
６は正負極外装ケース間を絶縁する環状絶縁パツ
キングであり、この絶縁パツキング６と正極２と
によりセパレータ４の周縁部を挾持している。７
は金属リングである。 In FIG. 1, reference numeral 1 denotes a positive electrode outer case, and a positive electrode 2 is disposed on the inner bottom surface of the case. A negative electrode 3 is placed on the positive electrode with a separator 4 interposed therebetween, and is pressed against the inner bottom surface of the negative electrode outer case 5.
Reference numeral 6 denotes an annular insulating packing for insulating between the positive and negative electrode exterior cases, and the peripheral edge of the separator 4 is held between the insulating packing 6 and the positive electrode 2. 7
is a metal ring.
ところで、第１図に示す如き構造を例えば、二
酸化マンガン或いは酸化銅などを正極活物質とす
る非水電解液電池に適用した場合、正極は放電に
伴い膨潤するものであり、特にセパレータの周縁
部が環状絶縁パツキング６と正極２とにより挾持
固定されているため第２図のように正極２の中央
部が盛上るように変形しこの変形に対してセパレ
ータ４の伸びが追随できず、セパレータ４が局部
的に破壊して内部短絡を生じる懸念がある。 By the way, when the structure shown in FIG. 1 is applied to a non-aqueous electrolyte battery using manganese dioxide or copper oxide as a positive electrode active material, the positive electrode swells with discharge, and the peripheral edge of the separator in particular swells. Since the positive electrode 2 is clamped and fixed between the annular insulating packing 6 and the positive electrode 2, the central part of the positive electrode 2 is deformed so as to bulge as shown in FIG. There is a concern that this may locally break down and cause an internal short circuit.
(ハ) 考案の目的
本考案は上記従来電池における不都合を解消す
ることを目的とする。(c) Purpose of the invention The purpose of the invention is to solve the above-mentioned disadvantages of conventional batteries.
(ニ) 考案の構成
本考案の扁平型電池は、放電反応に伴い膨潤す
る正極上にセパレータを介して負極を載置すると
共に正負極外装ケース間を絶縁する環状絶縁パツ
キングと前記正極とにより、前記セパレータの周
縁部を挾持するものであつて、前記セパレータの
前記環状絶縁パツキング口縁と対向する円周上
に、部分的な破断部を形成し、且つ前記円周の直
径を前記負極の直径よりも大としたことを特徴と
するものである。(d) Structure of the invention The flat battery of the invention has a negative electrode placed on the positive electrode, which swells due to a discharge reaction, via a separator, and the positive electrode and an annular insulating packing that insulates between the positive and negative electrode outer cases. The separator is configured to hold a peripheral edge of the separator, and to form a partial break on a circumference of the separator facing the annular insulation packing opening edge, and to make the diameter of the circumference equal to the diameter of the negative electrode. It is characterized by being larger than the
本考案によれば、正極の膨潤部と負極との間に
介在せるセパレータの部分がセパレータの周縁部
より切離され、この切離されたセパレータが正極
の膨潤度合にかかわらず常に正負極間に位置する
ため内部短絡を解消しうる。 According to the present invention, the part of the separator interposed between the swollen part of the positive electrode and the negative electrode is separated from the peripheral edge of the separator, and the separated separator is always placed between the positive and negative electrodes regardless of the degree of swelling of the positive electrode. Because of this position, internal short circuits can be eliminated.
(ホ) 実施例
以下本考案の一実施例を扁平型の非水電解液電
池を例にとり第３図乃至第５図を参照して詳述す
る。(e) Embodiment An embodiment of the present invention will be described in detail below with reference to FIGS. 3 to 5, taking a flat type non-aqueous electrolyte battery as an example.
第３図において１１はステンレス製の正極外装
ケースであつてその内底面には二酸化マンガンを
活物質とする正極１２が配設されている。１３は
正極上にポリプロピレン不織布よりなるセパレー
タ１４を介して配置されたリチウム負極であり、
ステンレス製の負極外装ケース１５の内底面に圧
着されている。１６は正負極外装ケース間を絶縁
する環状絶縁パツキングであり、この絶縁パツキ
ング１６と正極１２とによりセパレータ１４の周
縁部を挾持している。１７は金属リングである。 In FIG. 3, reference numeral 11 denotes a positive electrode outer case made of stainless steel, and a positive electrode 12 having manganese dioxide as an active material is disposed on the inner bottom surface of the case. 13 is a lithium negative electrode placed on the positive electrode with a separator 14 made of polypropylene nonwoven fabric interposed therebetween;
It is crimped to the inner bottom surface of the negative electrode outer case 15 made of stainless steel. Reference numeral 16 denotes an annular insulating packing for insulating between the positive and negative electrode exterior cases, and the peripheral edge of the separator 14 is held between the insulating packing 16 and the positive electrode 12. 17 is a metal ring.
而してセパレータ１４は第４図に示す如く前記
環状絶縁パツキング１６口縁と対向する円周上
に、部分的な破断部が形成されており、且つ前記
円周の直径を、負極１３の直径よりも大として、
易破壊部１４′が構成されている。 As shown in FIG. 4, the separator 14 has a partially broken part formed on the circumference facing the opening edge of the annular insulating packing 16, and the diameter of the circumference is set to the diameter of the negative electrode 13. as greater than,
A breakable portion 14' is configured.
そして前記易破壊部１４′を環状絶縁パツキン
グ１６の口縁に対向する部分に形成しているの
で、パツキング１６のエツヂ部によりシヤープに
切断しうる利点がある。 Since the breakable portion 14' is formed in the portion facing the edge of the annular insulating packing 16, there is an advantage that it can be sharply cut by the edge portion of the packing 16.
(ヘ) 考案の効果
本考案電池構造によれば、放電に伴つて正極が
膨潤した場合、第５図に示す如く正極の膨潤部と
負極との間に介在せるセパレータの部分がセパレ
ータの周縁部より切離され、この切離されたセパ
レータが正極の膨潤度合にかかわらず常に正負極
間に位置するため内部短絡を解消しうるという効
果を奏するものであり、その実用的価値は極めて
大である。(f) Effects of the invention According to the battery structure of the invention, when the positive electrode swells due to discharge, the portion of the separator interposed between the swollen part of the positive electrode and the negative electrode bulges at the peripheral edge of the separator, as shown in FIG. This separated separator is always located between the positive and negative electrodes regardless of the degree of swelling of the positive electrode, which has the effect of eliminating internal short circuits, and its practical value is extremely large. .
第１図乃至第２図は従来例に係り、第１図は組
立直後における従来電池の縦断面図、第２図は放
電末期における従来電池の縦断面図を示す。第３
図乃至第５図は本考案に係り、第３図は組立直後
における本案電池の縦断面図、第４図Ａはセパレ
ータの平面図、Ｂはそのａ−a′断面図、第５図は
放電末期における本案電池の縦断面図を夫々示
す。
１１……正極外装ケース、１２……正極、１３
……負極、１４……セパレータ、１４′……易破
壊部、１５……負極外装ケース、１６……環状絶
縁パツキング、１７……金属リング。
1 and 2 relate to a conventional example, with FIG. 1 showing a longitudinal sectional view of the conventional battery immediately after assembly, and FIG. 2 showing a longitudinal sectional view of the conventional battery at the end of discharge. Third
5 to 5 relate to the present invention, FIG. 3 is a longitudinal sectional view of the battery of the present invention immediately after assembly, FIG. FIG. 3 shows longitudinal cross-sectional views of the battery according to the present invention at its final stage. 11...Positive electrode outer case, 12...Positive electrode, 13
... Negative electrode, 14 ... Separator, 14' ... Easily broken part, 15 ... Negative electrode outer case, 16 ... Annular insulation packing, 17 ... Metal ring.
Claims (1)
介して負極を載置すると共に正負極外装ケース間
を絶縁する環状絶縁パツキングと前記正極とによ
り、前記セパレータの周縁部を挾持するものであ
つて、前記セパレータの前記環状絶縁パツキング
口縁と対向する円周上に、部分的な破断部を形成
し、且つ前記円周の直径を前記負極の直径よりも
大としたことを特徴とする扁平型電池。 A negative electrode is placed on the positive electrode that swells with the discharge reaction via a separator, and the peripheral edge of the separator is held between the positive electrode and an annular insulating packing that insulates between the positive and negative electrode outer cases, A flat battery, characterized in that a partial break is formed on a circumference of the separator facing the edge of the annular insulation packing, and the diameter of the circumference is larger than the diameter of the negative electrode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP17622883U JPS6087165U (en) | 1983-11-14 | 1983-11-14 | flat battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP17622883U JPS6087165U (en) | 1983-11-14 | 1983-11-14 | flat battery |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6087165U JPS6087165U (en) | 1985-06-15 |
| JPH0218924Y2 true JPH0218924Y2 (en) | 1990-05-25 |
Family
ID=30383197
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP17622883U Granted JPS6087165U (en) | 1983-11-14 | 1983-11-14 | flat battery |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6087165U (en) |
-
1983
- 1983-11-14 JP JP17622883U patent/JPS6087165U/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6087165U (en) | 1985-06-15 |
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