JP2805766B2 - Organic electrolyte battery - Google Patents
Organic electrolyte batteryInfo
- Publication number
- JP2805766B2 JP2805766B2 JP63230425A JP23042588A JP2805766B2 JP 2805766 B2 JP2805766 B2 JP 2805766B2 JP 63230425 A JP63230425 A JP 63230425A JP 23042588 A JP23042588 A JP 23042588A JP 2805766 B2 JP2805766 B2 JP 2805766B2
- Authority
- JP
- Japan
- Prior art keywords
- battery
- organic electrolyte
- case
- sealing plate
- positive electrode
- 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 - Fee Related
Links
- 239000005486 organic electrolyte Substances 0.000 title claims description 9
- 238000007789 sealing Methods 0.000 claims description 15
- 239000007788 liquid Substances 0.000 description 11
- 239000004743 Polypropylene Substances 0.000 description 4
- NUJOXMJBOLGQSY-UHFFFAOYSA-N manganese dioxide Chemical compound O=[Mn]=O NUJOXMJBOLGQSY-UHFFFAOYSA-N 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- -1 polypropylene Polymers 0.000 description 4
- 229920001155 polypropylene Polymers 0.000 description 4
- 230000006835 compression Effects 0.000 description 3
- 238000007906 compression Methods 0.000 description 3
- 229910001220 stainless steel Inorganic materials 0.000 description 3
- 239000010935 stainless steel Substances 0.000 description 3
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 2
- 230000006866 deterioration Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000008151 electrolyte solution Substances 0.000 description 2
- 229910052744 lithium Inorganic materials 0.000 description 2
- 239000007773 negative electrode material Substances 0.000 description 2
- XTHFKEDIFFGKHM-UHFFFAOYSA-N Dimethoxyethane Chemical compound COCCOC XTHFKEDIFFGKHM-UHFFFAOYSA-N 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
- 239000011149 active material Substances 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 239000003792 electrolyte Substances 0.000 description 1
- MHCFAGZWMAWTNR-UHFFFAOYSA-M lithium perchlorate Chemical compound [Li+].[O-]Cl(=O)(=O)=O MHCFAGZWMAWTNR-UHFFFAOYSA-M 0.000 description 1
- 229910001486 lithium perchlorate Inorganic materials 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000012046 mixed solvent Substances 0.000 description 1
- 239000007774 positive electrode material Substances 0.000 description 1
- RUOJZAUFBMNUDX-UHFFFAOYSA-N propylene carbonate Chemical compound CC1COC(=O)O1 RUOJZAUFBMNUDX-UHFFFAOYSA-N 0.000 description 1
- 239000000243 solution 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
- H01M6/00—Primary cells; Manufacture thereof
- H01M6/14—Cells with non-aqueous electrolyte
- H01M6/16—Cells with non-aqueous electrolyte with organic electrolyte
-
- 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
- H01M50/10—Primary casings; Jackets or wrappings
- H01M50/102—Primary casings; Jackets or wrappings characterised by their shape or physical structure
- H01M50/109—Primary casings; Jackets or wrappings characterised by their shape or physical structure of button or coin shape
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Primary Cells (AREA)
- Battery Electrode And Active Subsutance (AREA)
Description
【発明の詳細な説明】 産業上の利用分野 本発明は有機電解液電池に関するものである。Description: TECHNICAL FIELD The present invention relates to an organic electrolyte battery.
従来の技術 従来、この種の有機電解液電池は、第３図に示すよう
な構成であった。第３図において、１は負極端子を兼ね
る封口板、２は正極端子をかねる電池ケース、３はポリ
プロピレンからなるガスケット、４は二酸化マンガン等
を活物質とする正極、５は負極活物質であるリチウム、
６はポリプロピレン等からなるセパレータ、７は正極リ
ングである。2. Description of the Related Art Conventionally, this type of organic electrolyte battery has a configuration as shown in FIG. In FIG. 3, 1 is a sealing plate also serving as a negative electrode terminal, 2 is a battery case also serving as a positive electrode terminal, 3 is a gasket made of polypropylene, 4 is a positive electrode using manganese dioxide or the like as an active material, 5 is lithium as a negative electrode active material. ,
Reference numeral 6 denotes a separator made of polypropylene or the like, and reference numeral 7 denotes a positive electrode ring.
発明が解決しようとする課題 このような従来構成を応用して、厚さの厚い電池の構
成方法は以下の３種類があった。Problems to be Solved by the Invention There are the following three methods for forming a thick battery by applying such a conventional structure.
（１） 第４図に示すように封口板１の折り返し部ａの
寸法を長くする方法。(1) A method of lengthening the size of the folded portion a of the sealing plate 1 as shown in FIG.
（２） 第５図に示すように封口板１のＲ部ｂの形状を
変化させる方法。(2) A method of changing the shape of the R portion b of the sealing plate 1 as shown in FIG.
（３） 第６図に示すようにガスケット３の底部厚さｃ
を厚くする方法。(3) As shown in FIG. 6, the bottom thickness c of the gasket 3
How to thicken.
しかし、これら３種類の方法を用いることにより耐漏
液性能が悪化することが問題となっている。又、電池内
容積がガスケットの内径φ１によって決ってしまうた
め、電池容量をさらに上げることができない。However, there is a problem that the use of these three methods deteriorates the liquid leakage resistance. Further, since the battery in the volume will be determined by the inner diameter phi 1 of the gasket, it is impossible to further increase the battery capacity.
本発明は、上記のような従来の問題点を解決し、耐漏
液性能を向上させるとともに、さらに電池の容量アップ
をはかることを目的としたものである。SUMMARY OF THE INVENTION An object of the present invention is to solve the conventional problems as described above, improve the liquid leakage resistance, and further increase the capacity of a battery.
課題を解決するための手段 この問題を解決するために、本発明は、第２図に示す
ような、側面部に少なくとも１ケ所以上の穴をもうけ
た、断面逆ハット状の電池内ケース８を電池ケース内に
設置して溶接したものである。Means for Solving the Problems In order to solve this problem, the present invention provides a battery inner case 8 having at least one or more holes in a side surface and having an inverted hat-shaped cross section as shown in FIG. It is installed in the battery case and welded.
作用 この構成により、耐漏液性能の大きな因子となるガス
ケットの圧縮率及び封口板の変形量を薄形構造とほぼ同
程度におさえることが可能となり、耐漏液性能が安定す
る。又、前記電池内ケース側面部に穴をもうけること
で、ケースと内ケース側面部との間の空間部を液溜まり
とすることができ、従来構造では、デッドスペースとな
っていた体積を活用できるため、容量アップが可能とな
る。Operation With this configuration, the compression rate of the gasket and the amount of deformation of the sealing plate, which are the major factors in the liquid leakage resistance, can be suppressed to approximately the same level as the thin structure, and the liquid leakage resistance is stabilized. In addition, by forming a hole in the side surface of the battery inner case, the space between the case and the inner case side surface can be used as a liquid pool, and in the conventional structure, the dead space can be utilized. Therefore, the capacity can be increased.
実 施 例 以下本発明の実施例を高さ5.0mm,直径20.0mmの有機電
解液電池を例にとり説明する。EXAMPLES Hereinafter, examples of the present invention will be described using an organic electrolyte battery having a height of 5.0 mm and a diameter of 20.0 mm as an example.
第１図は、本発明によるリチウム１二酸化マンガン系
の有機電解液電池の断面図である。第１図において、１
はステンレス鋼製の負極端子を兼ねる封口板、２はステ
ンレス鋼製の正極端子を兼ねる電池ケース、３はポリプ
ロピレンからなるガスケット、４は正極活物質である二
酸化マンガン等からなる正極、５は負極活物質であるリ
チウムであり、前記封口板１に圧着している。６はポリ
プロピレン等よりなるセパレータ、８はステンレス鋼製
の本発明の電池内ケースである。本実施例では、前記電
池内ケース側面部に、径方形に４ケ所の穴９を設けてい
る。電解液には、プロピレンカーボネイトとジメトキシ
エタンとの等容積混合溶媒に過塩素酸リチウムを溶解さ
せたものを使用した。FIG. 1 is a sectional view of a lithium monomanganese dioxide-based organic electrolyte battery according to the present invention. In FIG. 1, 1
Is a sealing plate which also serves as a stainless steel negative electrode terminal, 2 is a battery case which also serves as a stainless steel positive electrode terminal, 3 is a gasket made of polypropylene, 4 is a positive electrode made of manganese dioxide which is a positive electrode active material, and 5 is a negative electrode active material. The material is lithium, which is pressed against the sealing plate 1. Reference numeral 6 denotes a separator made of polypropylene or the like, and reference numeral 8 denotes a battery case of the present invention made of stainless steel. In this embodiment, four holes 9 are provided in a rectangular shape on the side surface of the battery inner case. As the electrolytic solution, a solution prepared by dissolving lithium perchlorate in an equal volume mixed solvent of propylene carbonate and dimethoxyethane was used.
第２図は、本発明の電池内ケースの斜視図であり、フ
ランジ部10と、中央平坦部11とを環状の側面部12でつな
いで逆ハット状としている。FIG. 2 is a perspective view of the inner battery case of the present invention, in which a flange portion 10 and a central flat portion 11 are connected by an annular side surface portion 12 to form an inverted hat shape.
上記のように構成された本発明の電池Ａと、従来例の
第４図，第５図，第６図に示す構造の電池B,C,Dの耐漏
液性能を第１表に示す。なおヒートサイクルは60℃に１
時間,60℃から−10℃までの温度降下を１時間、−10℃
に１時間、−10℃から60℃までの温度上昇を１時間とし
たサイクルである。Table 1 shows the leakage resistance of the battery A of the present invention configured as described above and the batteries B, C, and D having the structures shown in FIGS. 4, 5, and 6 of the conventional example. The heat cycle is 1 at 60 ° C.
Time, temperature drop from 60 ℃ to -10 ℃ for 1 hour, -10 ℃
In this cycle, the temperature was raised from −10 ° C. to 60 ° C. for 1 hour.
従来構造は、耐漏液性に劣ることがわかる。第４図，
第５図に示す構造では、封口板１のトップd,eと折り返
し部f,gの間の距離が大きい為、電池ケース２を径方向
にかしめることにより封口するこの種の電池において、
封口板トップd,eを支点として、内側にモーメントが封
口板にかかり、そのかしめ力に封口板が耐えられず変形
量が大きくなり耐漏液性が悪化する。また、第６図に示
す構造では、封口によるガスケット底部の圧縮率が低下
するために、耐漏液性が悪化する。本発明の電池内ケー
スは、上部フランジ部10がガスケット底部に接してお
り、従来構造で耐漏液性悪化の原因となった封口板の変
形，ガスケット底部の圧縮率の低下はなく、良好な耐漏
液性を示す。又、従来この種の電池に用いられてきた正
極リング７は、放電による正極の体積膨張を電池の軸方
向に働かせ、電池内部接触を良好に保つ作用をもってい
るが、本発明の電池内ケース内面部13は、この正極リン
グの作用をはたすことができる。そのため、従来用いて
きた正極リング７をはぶくことができる。 It can be seen that the conventional structure is inferior in liquid leakage resistance. Fig. 4,
In the structure shown in FIG. 5, since the distance between the tops d and e of the sealing plate 1 and the folded portions f and g is large, in this type of battery sealed by caulking the battery case 2 in the radial direction,
With the tops d and e of the sealing plate as fulcrums, a moment is applied to the inside of the sealing plate, the sealing plate cannot withstand the caulking force, the deformation increases, and the leak resistance deteriorates. Further, in the structure shown in FIG. 6, since the compression rate of the bottom of the gasket by the sealing decreases, the liquid leakage resistance deteriorates. In the battery inner case of the present invention, the upper flange portion 10 is in contact with the bottom of the gasket, and there is no deformation of the sealing plate and deterioration of the compression ratio of the bottom of the gasket which caused deterioration of the liquid leakage resistance in the conventional structure. Shows liquid properties. The positive electrode ring 7, which has been conventionally used in this type of battery, has a function of causing the volume expansion of the positive electrode due to discharge to act in the axial direction of the battery, thereby maintaining good contact with the inside of the battery. The part 13 can fulfill the function of this positive electrode ring. Therefore, the conventionally used positive electrode ring 7 can be removed.
しかし、電池組立後の内部抵抗は第２表の（２）に示
すように、例えば同表の（１）に示すφ20,h3.2mmの電
池に比較して大きな値となる。これは解析の結果、電池
内ケースと電池ケースとの間に電解液が存在するためで
あることが判明した。その為、本発明による構造、つま
り、電池内ケースと電池ケースを溶接することにより第
２表の（３）に示すように非常に小さな内部抵抗値とな
った。However, as shown in Table 2 (2), the internal resistance after battery assembly has a larger value than, for example, a φ20, h3.2 mm battery shown in Table 1 (1). As a result of the analysis, it was found that the electrolytic solution was present between the inner battery case and the battery case. Therefore, when the structure according to the present invention, that is, the inner battery case and the battery case were welded, an extremely low internal resistance was obtained as shown in (3) of Table 2.
また、第７図に、本発明の電池Ａと従来例の代表とし
て第４図の構造をもつ電池Ｂの放電曲線を示す。図より
明らかなように、ＡはＢに比べ約10％の容量アップをは
かることができた。これは、第２図に示したように、電
池内ケース側面部に穴をもうけることによって電池ケー
スと電池内ケースの間の空間部分14を液溜まりに利用で
きたためである。 FIG. 7 shows the discharge curves of the battery A of the present invention and the battery B having the structure of FIG. 4 as a representative of the conventional example. As is clear from the figure, A was able to increase the capacity by about 10% compared to B. This is because, as shown in FIG. 2, the space 14 between the battery case and the battery case could be used as a liquid pool by making a hole in the side surface of the battery case.
なお、穴の形，個数，位置については、種々考えられ
る。Note that various shapes, numbers, and positions of the holes can be considered.
即ち、 （１） 穴の数については、少なくとも１ケ所以上あれ
ば良好である。(1) The number of holes is good if at least one or more holes are provided.
（２） 穴の形については、加工上の問題で本実施例で
は丸みを有した三角形になっているが、形はどのような
ものでもかまわない。(2) The shape of the hole is a rounded triangle in this embodiment due to processing problems, but any shape may be used.
（３） 穴の位置については、空間部分14には、電解液
が入り、これが穴内外へ移動することが必要であるの
で、できるかぎり側面部の下方向にあることがのぞまし
い。しかし、これは製造方法との関係で一概に判断でき
ない。(3) Regarding the position of the hole, since the electrolyte enters the space portion 14 and needs to move in and out of the hole, it is preferable that the hole be located as far downward as possible. However, this cannot be unconditionally determined in relation to the manufacturing method.
又、本発明の電池内ケースの側面部の長さをかえるこ
とによって、任意の厚みの電池を製造することができる
という効果を持っている。Also, by changing the length of the side portion of the battery inner case of the present invention, there is an effect that a battery having an arbitrary thickness can be manufactured.
発明の効果 以上のように、本発明によれば、電池の厚みに関係な
く、良好な耐漏液性を確保でき、また従来より使用され
てきた正極リングをはぶくことができる。さらに、電池
内ケースの高さを変更するだけで、同径電池の場合、ガ
スケット，封口板を共用し、厚さの異なる電池を生産で
きるという効果をもつ。Effect of the Invention As described above, according to the present invention, good liquid leakage resistance can be ensured regardless of the thickness of the battery, and the conventionally used positive electrode ring can be removed. Further, by changing the height of the battery inner case, in the case of a battery of the same diameter, the gasket and the sealing plate can be used in common, so that batteries having different thicknesses can be produced.
又、従来よりも、デッドスペースを少なくすることが
でき、電池の容量アップをはかることができる。Further, the dead space can be reduced and the capacity of the battery can be increased as compared with the related art.
第１図は本発明の実施例による有機電解液電池の縦断面
図、第２図は本発明の電池内ケースの斜視図、第３図は
従来構造の有機電解液の縦断面図、第４図〜第６図は電
池厚さが厚い従来例の縦断面図、第７図は電池の放電曲
線を示す図である。 １……封口板、２……電池ケース、３……ガスケット、
４……正極、５……負極、６……セパレータ、７……正
極リング、８……電池内ケース、９……穴、10……フラ
ンジ部、11……中央平坦部、12……側面部。FIG. 1 is a vertical sectional view of an organic electrolyte battery according to an embodiment of the present invention, FIG. 2 is a perspective view of a battery inner case of the present invention, FIG. 6 are longitudinal sectional views of a conventional example having a large battery thickness, and FIG. 7 is a view showing a discharge curve of the battery. 1 ... sealing plate, 2 ... battery case, 3 ... gasket,
4 ... Positive electrode, 5 ... Negative electrode, 6 ... Separator, 7 ... Positive electrode ring, 8 ... Battery inner case, 9 ... Hole, 10 ... Flange part, 11 ... Center flat part, 12 ... Side Department.
フロントページの続き (72)発明者 沢井 忠 大阪府門真市大字門真1006番地 松下電 器産業株式会社内 (56)参考文献 特開 昭62−170162（ＪＰ，Ａ) 実開 昭57−170275（ＪＰ，Ｕ) 実開 昭58−193572（ＪＰ，Ｕ) (58)調査した分野(Int.Cl.6，ＤＢ名) H01M 6/16 H01M 4/06Continuing from the front page (72) Inventor Tadashi Sakai 1006 Kazuma Kadoma, Kadoma City, Osaka Prefecture Matsushita Electric Industrial Co., Ltd. (56) References JP-A-62-170162 (JP, A) JP-A-57-170275 (JP) , U) Actually open 58-193572 (JP, U) (58) Fields investigated (Int. Cl. 6 , DB name) H01M 6/16 H01M 4/06
Claims (1)
ータよりなる発電要素を、封口板と電池ケース及びこの
両者間に介在したガスケットにより密封した有機電解液
電池であって、前記ガスケットの底部に当接してこれを
支持するフランジ部及び前記電池ケース内底面に溶接さ
れた中央平坦部を有し、さらにフランジ部と中央平坦部
をつなぐ側面部に少なくとも１ケ所以上の穴をもうけ
た、断面が逆ハット状の電池内ケースを備えた有機電解
液電池。An organic electrolyte battery in which a power generating element comprising a positive electrode, a negative electrode, and a separator impregnated with an organic electrolyte is sealed by a sealing plate, a battery case, and a gasket interposed therebetween. Having a flange portion that abuts and supports the battery case and a central flat portion welded to the inner bottom surface of the battery case, and further has at least one or more holes in a side portion connecting the flange portion and the central flat portion, Is an organic electrolyte battery provided with an inverted hat-shaped battery inner case.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63230425A JP2805766B2 (en) | 1988-09-14 | 1988-09-14 | Organic electrolyte battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63230425A JP2805766B2 (en) | 1988-09-14 | 1988-09-14 | Organic electrolyte battery |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0279366A JPH0279366A (en) | 1990-03-19 |
| JP2805766B2 true JP2805766B2 (en) | 1998-09-30 |
Family
ID=16907694
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP63230425A Expired - Fee Related JP2805766B2 (en) | 1988-09-14 | 1988-09-14 | Organic electrolyte battery |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2805766B2 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4983007B2 (en) * | 2005-11-28 | 2012-07-25 | パナソニック株式会社 | Flat battery sealing plate support and flat battery |
| JP2010212207A (en) * | 2009-03-12 | 2010-09-24 | Hitachi Maxell Ltd | Flat battery |
-
1988
- 1988-09-14 JP JP63230425A patent/JP2805766B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0279366A (en) | 1990-03-19 |
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| JPH0426051A (en) | Organic electrolyte battery | |
| JPH05159973A (en) | Electric double layer capacitor |
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