JP2636416B2 - Sealed lead-acid battery - Google Patents
Sealed lead-acid batteryInfo
- Publication number
- JP2636416B2 JP2636416B2 JP1102139A JP10213989A JP2636416B2 JP 2636416 B2 JP2636416 B2 JP 2636416B2 JP 1102139 A JP1102139 A JP 1102139A JP 10213989 A JP10213989 A JP 10213989A JP 2636416 B2 JP2636416 B2 JP 2636416B2
- Authority
- JP
- Japan
- Prior art keywords
- lead
- acid battery
- sealed lead
- active material
- expanding
- 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
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
Description
【発明の詳細な説明】 〔産業上の利用分野〕 本発明は密閉形鉛蓄電池に関するもので、特にコンピ
ュータ、通信機器等のバックアップ電源として、或は建
物等の非常用電源として使用される大容量の背の高い密
閉形鉛蓄電池に関するものである。Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a sealed lead-acid battery, and particularly to a large-capacity lead-acid battery used as a backup power source for a computer, a communication device or the like, or as an emergency power source for a building or the like. And a tall sealed lead-acid battery.
密閉形鉛蓄電池は通常、充電終期に正極で発生する酸
素ガスを負極に移動させ、負極活物質と反応させてこれ
を消費すると共に負極板を放電状態にして負極からの水
素ガスの発生を抑制するいわゆる「O2サイクル」を使っ
て密閉化している。A sealed lead-acid battery normally transfers oxygen gas generated at the positive electrode at the end of charging to the negative electrode, reacts with the negative electrode active material, consumes it, and puts the negative electrode plate into a discharged state to suppress the generation of hydrogen gas from the negative electrode It is sealed using a so-called “O 2 cycle”.
一方、格子の製造方法としては従来の鋳造法によるも
のの他、鉛又は鉛合金の連続シートの一部を網目状に展
開拡張してここに活物質を充填し、非展開部分を集電部
とするエキスパンド法が実用化されている。この方法は
生産性が高く、極板に占める格子の割合を小さく、活物
質の割合を大きくできるので容量を増加させることが可
能であり、自動車用鉛蓄電池を中心に密閉形鉛蓄電池に
も使われている。従来実用化されている極板は第１図に
示すようにその巾（Pw）が40〜150mm、高さ（Ｈ）が70
〜140mm程度であり、この程度の大きさであれば、自動
車用のように遊離した電解液が沢山存在する鉛蓄電池の
極板としては致命的な欠陥はなかった。しかしながら密
閉形鉛蓄電池は遊離した電解液が存在しないため、極群
の熱容量が小さく、高率での充・放電で格子が溶断し、
最悪の場合には爆発することさえある。この防止のため
の１つの方法として、特開昭64−19674号公報に記載さ
れているように、格子耳部の単位断面積当りの活物質の
理論容量を2.5Ah/mm2以下とすることが有効である。し
かし、これだけでは不充分であり、電池が誤って短絡さ
れた場合、網目部を形成しているストランド、特に集電
部材直下のストランドが溶断することがあった。しかも
本発明の密閉形鉛蓄電池のように大容量になると、極板
巾は約150mm程度で従来のものと余り変りがないにも拘
らず、高さが250〜500mmにもなる。従って上部にある非
展開の集電部直下のストランドには極めて大きな電流が
流れるためその安全性に問題が生じている。On the other hand, as a method of manufacturing a lattice, in addition to a conventional casting method, a part of a continuous sheet of lead or a lead alloy is expanded and expanded in a mesh shape, filled with an active material, and a non-deployed part is formed as a current collector. Expanding method has been put to practical use. This method has a high productivity and can increase the capacity because the ratio of the grid to the electrode plate is small and the ratio of the active material can be increased. Have been done. As shown in FIG. 1, the electrode plate which has been practically used has a width (Pw) of 40 to 150 mm and a height (H) of 70.
With a size of about 140 mm, there was no fatal defect as an electrode plate of a lead-acid battery in which a large amount of free electrolyte exists, such as for an automobile. However, since the sealed lead-acid battery does not have a free electrolyte solution, the heat capacity of the electrode group is small, and the grid is melted by charging and discharging at a high rate,
In the worst case it can even explode. As one method for preventing this, as described in JP-A-64-19674, the theoretical capacity of the active material per unit cross-sectional area of the grid ear is set to 2.5 Ah / mm 2 or less. Is valid. However, this is not sufficient, and if the battery is short-circuited by mistake, the strands forming the mesh part, particularly the strands immediately below the current collecting member, may be melted. In addition, when the capacity is large as in the sealed lead-acid battery of the present invention, the electrode plate width is about 150 mm, which is not much different from the conventional one, but the height is 250 to 500 mm. Therefore, an extremely large current flows through the strand immediately below the undeployed current collector at the upper part, which poses a problem in safety.
更に極板下部と集電部との抵抗もストランドが従来の
ように細かいと極めて高く、放電特性、特に高率放電特
性を低下させるばかりでなく、極板下部の充電効率をも
著しく低下させて、負極サルフェーションを招来し、電
池の寿命が短くなるという欠点がある。Furthermore, the resistance between the lower part of the electrode plate and the current collector is extremely high when the strand is as fine as before, which not only lowers the discharge characteristics, especially the high-rate discharge characteristics, but also significantly lowers the charging efficiency of the lower part of the electrode plate. In addition, there is a disadvantage that the negative electrode sulfation is caused and the life of the battery is shortened.
また、密閉形鉛蓄電池が遊離した流動する電解液を有
していないため、極板耳部は気体中に露出するのでその
耳部の断面積についてはそれが溶断しないよう特別の配
慮が必要であること、及びエキスパンド極板を使用する
に当ってはシート厚さが薄いために特にその配慮が重要
であることは前に述べた通りである。集電耳に関しては
前記特開昭64−19674号公報に開示されている技術を用
いれば良いが、例え集電耳部にこのような配慮をしても
なお網目部を構成するストランド、特に集電部直下のス
トランド断面積に関して配慮がないと溶断、爆発の危険
があることが明らかになった。この部分は、集電耳部の
ように電池空間内に露出してはいなく、そのまわりは活
物質、セパレータ及びその孔内に存在する電解液によっ
て囲まれているので所要断面積は耳部よりは少なくても
良いが、本発明の密閉形鉛蓄電池のように極板が大き
く、縦長になるとその値は大変限定されることが明らか
になった。In addition, since the sealed lead-acid battery does not have a free flowing electrolyte, the electrode lugs are exposed to the gas, so special consideration must be given to the cross-sectional area of the lugs so that they do not melt. As described above, the fact that the sheet thickness is small when using the expanded electrode plate is particularly important because the sheet thickness is small. Regarding the current collecting ear, the technique disclosed in the above-mentioned Japanese Patent Application Laid-Open No. 64-19674 may be used. However, even if such consideration is given to the current collecting ear part, the strands constituting the mesh part, especially the current collecting ear, It became clear that there was a danger of fusing and explosion if there was no consideration for the cross-sectional area of the strand just below the electrical part. This part is not exposed in the battery space like the current collecting ear part, and its surrounding area is surrounded by the active material, the separator and the electrolyte present in the hole, so that the required cross-sectional area is smaller than that of the ear part. It is clear that the value may be small, but the value is very limited when the electrode plate is large and vertically long like the sealed lead storage battery of the present invention.
本発明は上記欠点を解消したもので、放電特性にすぐ
れた安全性の高い密閉形鉛蓄電池を提供することにあ
る。An object of the present invention is to solve the above-mentioned disadvantages and to provide a sealed lead-acid battery having excellent discharge characteristics and high safety.
本発明は、その特許請求の範囲に記載した通りの密閉
形鉛蓄電池である。The present invention is a sealed lead-acid battery as described in the claims.
以下、本発明の実施例について述べる。 Hereinafter, examples of the present invention will be described.
実施例1. 第２図に示すように、鉛−カルシウム合金からなる種
々の厚さ（ST）の連続シートを種々の刻み巾（CW）でエ
キスパンド加工して巾（PW）150mm、高さ（Ｈ）330mmの
大きさの格子を得た。この格子の網目部に活物質ペース
トを充填し、負極板としたが、網目部を構成するストラ
ンド１の刻み巾（CW）はシート厚さ（ST）と同じにし、
非展開部２に接するストランド１の数は12本、極板厚さ
は2mm、そして活物質量は１枚当り290gで一定とした。
なお、第３図は第２図のＡ部（ストランド）の断面拡大
図である。Example 1. As shown in FIG. 2, a lead - calcium various thicknesses made of alloy (S T) Width (P W) by expanding process a continuous sheet in various increments width (C W) of 150 mm, A grid having a height (H) of 330 mm was obtained. The grid mesh was filled with an active material paste to form a negative electrode plate. The step width (C W ) of the strand 1 constituting the mesh was the same as the sheet thickness (S T ).
The number of the strands 1 in contact with the non-development portion 2 was 12, the thickness of the electrode plate was 2 mm, and the amount of the active material was constant at 290 g per sheet.
FIG. 3 is an enlarged cross-sectional view of part A (strand) of FIG.
このようにして得た種々の負極板を用いて、鋳造格子
による正極板及びセパレータと積層し、常法により密閉
形鉛直電池を組立てた。負極板の数はセル当り12枚、正
極板のそれは11枚で、組立てられた密閉形鉛蓄電池の容
量は300Ah/10HRである。The thus obtained various negative plates were laminated with a positive plate and a separator using a casting grid, and a sealed vertical battery was assembled by a conventional method. The number of negative plates is 12 per cell and that of positive plates is 11, and the capacity of the assembled lead-acid battery is 300 Ah / 10 HR.
組立てた密閉形鉛蓄電池の容量試験、短絡試験、放電
深度50％での寿命試験を実施したところ第１表のNo.1〜
５に示す結果を得た。A capacity test, short-circuit test, and life test at a depth of discharge of 50% of the assembled sealed lead-acid battery were performed.
The results shown in FIG.
実施例2. 第４図に示すように、集電親骨３を網目部４の展開方
向DMと平行に配置し、実施例１に示した手順により種々
の密閉形鉛蓄電池を作製し、各種の試験を実施した。そ
の結果を第１表のNo.6〜11に示すが、ストランドの刻み
巾はシート厚さと同じにし、非展開部（集電親骨）に接
するストランドの数は26本であり、極板厚さ、活物質量
等は上記実施例１と同じであった。Example 2 As shown in FIG. 4, the current collecting ribs 3 were arranged in parallel with the developing direction D M of the mesh portion 4, and various sealed lead-acid batteries were produced according to the procedure shown in Example 1. Was tested. The results are shown in Table 1 Nos. 6 to 11, where the step width of the strands is the same as the sheet thickness, the number of strands in contact with the non-deployed part (current collecting ribs) is 26, The amount of active material and the like were the same as in Example 1 above.
第１表の結果から明らかなように、非展開部直下のス
トランド断面積に対する負極活物質量の割合を10g/mm2
以下にすれば、容量は大きく、電池が誤って短絡された
としても、ストランドが溶断し、爆発したりすることは
ない。その上、特に6g/mm2以下にすれば、ストランド部
の抵抗 が小さくなるので、極板下部にまで充電々流が良く流れ
るので、負極板がサルフェーションして短寿命になるこ
ともなく、長寿命の電池になる。As is clear from the results in Table 1, the ratio of the amount of the negative electrode active material to the cross-sectional area of the strand immediately below the non-deployed portion was 10 g / mm 2
In the following, the capacity is large, and even if the battery is accidentally short-circuited, the strand does not melt and does not explode. In addition, especially when it is set to 6 g / mm 2 or less, the resistance of the strand As a result, the charging current flows well to the lower part of the electrode plate, so that the battery does not have a short life due to sulfation of the negative electrode plate, and the battery has a long life.
網目部の展開方向と平行に非展開集電耳部を配置する
のが、本発明の達成には最も容易で効果が大きい。この
ようにすれば、鉛又は鉛合金の連続シートの厚さが薄く
ても本発明の目的が達成され、その分多くの活物質を充
填することができ、しかも経済的である。このような格
子は、第５図に示すように、 ｉ）鉛又は鉛合金の連続シートの巾方向に平行にスリッ
トを入れる工程 ii）該スリットを展開拡張し、連続した網状部を形成す
る工程 iii）網状部の長さ方向に少なくとも１本の非展開の鉛
又は鉛合金からなる連続シートを連続して接合する工程 iv）網状部に鉛ペーストを塗着する工程 ｖ）鉛ペースト塗着後その両面を紙状体にて補強し連続
した極板にする工程 vi）連続した極板の巾方向が極板の高さ方向になるよう
に、そして非展開の鉛又は鉛合金からなる連続シートに
集電耳部を形成するように切断し、独立した極板とする
工程 によって製造することが可能である。Arranging the non-deployable current collecting ears in parallel with the direction in which the mesh is deployed is the easiest and most effective way to achieve the present invention. In this way, even if the thickness of the continuous sheet of lead or lead alloy is small, the object of the present invention is achieved, and more active material can be filled by that amount, and it is economical. As shown in FIG. 5, such a lattice is formed by: i) a step of forming a slit parallel to the width direction of a continuous sheet of lead or a lead alloy; ii) a step of expanding and expanding the slit to form a continuous mesh portion. iii) a step of continuously joining at least one continuous sheet of undeployed lead or a lead alloy in the longitudinal direction of the mesh part iv) a step of applying lead paste to the mesh part v) after applying the lead paste Vi) a step of reinforcing both sides with a paper-like body to form a continuous electrode plate vi) A continuous sheet made of undeployed lead or lead alloy so that the width direction of the continuous electrode plate is the height direction of the electrode plate It can be manufactured by a process in which the current collecting ears are cut to form independent electrode plates.
極板高さが、低い場合には本発明の構成は特に有効で
はない。極板高さが実施例の如く、200mmを越える場合
であって、かつその巾が150mm位よりも狭い場合に有効
である。When the electrode plate height is low, the configuration of the present invention is not particularly effective. This is effective when the electrode plate height exceeds 200 mm as in the embodiment and the width is smaller than about 150 mm.
このように本発明によれば大容量の背の高い、放電特
性にすぐれた、安全性の高い密閉形鉛蓄電池を提供でき
るので、その工業的価値は大きい。As described above, according to the present invention, a high-capacity sealed lead-acid battery having a large capacity, a high height, excellent discharge characteristics, and high safety can be provided, and thus has a great industrial value.
第１図は従来の格子の形状を示す平面図、第２図、第４
図は本発明に用いた格子を示す平面図、第３図は第２図
のＡ部の断面拡大図、第５図は第４図の格子を得る方法
の１つを示す平面図である。 1:ストランド、2:非展開部 3:集電親骨、4:網目部FIG. 1 is a plan view showing the shape of a conventional grating, FIG.
FIG. 3 is a plan view showing a grating used in the present invention, FIG. 3 is an enlarged sectional view of a portion A in FIG. 2, and FIG. 5 is a plan view showing one method for obtaining the grating in FIG. 1: Strand 2: Undeployed part 3: Current collecting rib, 4: Mesh part
Claims (3)
法により展開拡張して形成した網目部と非展開部とから
なる格子を備え、該網目部には活物質を充填し、該非展
開部に集電親骨兼集電耳を形成したエキスパンド極板を
用いた密閉形鉛蓄電池において、該非展開部に接するス
トランドの総断面積に対する活物質量の割合を10g/mm2
以下としたことを特徴とする密閉形鉛蓄電池。1. A grid comprising a mesh portion formed by expanding and expanding a continuous sheet of lead or a lead alloy by an expanding method and a non-developed portion, wherein the mesh portion is filled with an active material, and In a sealed lead-acid battery using an expanded electrode plate formed with a current collecting rib and a current collecting ear, the ratio of the amount of the active material to the total cross-sectional area of the strand in contact with the non-deployed portion is 10 g / mm 2
A sealed lead-acid battery characterized by the following.
法により展開拡張して形成した網目部と非展開部とから
なる格子を備え、該網目部には活物質を充填し、該非展
開部に集電親骨兼集電耳を形成したエキスパンド極板を
用いた密閉形鉛蓄電池において、該非展開部に接するス
トランドの総断面積に対する活物質量の割合を6g/mm2以
下としたことを特徴とする密閉形鉛蓄電池。2. A grid comprising a mesh portion formed by expanding and expanding a continuous sheet of lead or a lead alloy by an expanding method and a non-expanded portion, wherein the mesh portion is filled with an active material, and In a sealed lead-acid battery using an expanded electrode plate formed with a collecting rib and a collecting ear, the ratio of the amount of active material to the total cross-sectional area of the strand in contact with the non-deployed portion is set to 6 g / mm 2 or less. Sealed lead-acid battery.
開部を配置することを特徴とする請求項１又は請求項２
記載の密閉形鉛蓄電池。3. The non-developing portion is arranged in parallel to a direction in which the mesh portion expands and expands.
A sealed lead-acid battery as described.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1102139A JP2636416B2 (en) | 1989-04-20 | 1989-04-20 | Sealed lead-acid battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1102139A JP2636416B2 (en) | 1989-04-20 | 1989-04-20 | Sealed lead-acid battery |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH02281558A JPH02281558A (en) | 1990-11-19 |
| JP2636416B2 true JP2636416B2 (en) | 1997-07-30 |
Family
ID=14319434
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1102139A Expired - Fee Related JP2636416B2 (en) | 1989-04-20 | 1989-04-20 | Sealed lead-acid battery |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2636416B2 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105514442A (en) * | 2015-12-15 | 2016-04-20 | 常熟市万隆电源技术研发有限公司 | UPS storage battery grid not prone to deformation |
| JP2019029068A (en) * | 2017-07-25 | 2019-02-21 | 株式会社Ｇｓユアサ | Lead storage battery |
-
1989
- 1989-04-20 JP JP1102139A patent/JP2636416B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH02281558A (en) | 1990-11-19 |
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