JP2626254B2 - Manufacturing method of clad lead storage battery - Google Patents
Manufacturing method of clad lead storage batteryInfo
- Publication number
- JP2626254B2 JP2626254B2 JP2406616A JP40661690A JP2626254B2 JP 2626254 B2 JP2626254 B2 JP 2626254B2 JP 2406616 A JP2406616 A JP 2406616A JP 40661690 A JP40661690 A JP 40661690A JP 2626254 B2 JP2626254 B2 JP 2626254B2
- Authority
- JP
- Japan
- Prior art keywords
- clad
- anode plate
- battery
- formation
- manufacturing
- 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
- 238000004519 manufacturing process Methods 0.000 title claims description 9
- 238000003860 storage Methods 0.000 title claims description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 13
- 238000005253 cladding Methods 0.000 claims description 8
- 239000002184 metal Substances 0.000 claims description 8
- 238000000034 method Methods 0.000 claims description 7
- 239000008151 electrolyte solution Substances 0.000 claims description 6
- 230000015572 biosynthetic process Effects 0.000 description 26
- 239000000126 substance Substances 0.000 description 18
- HTUMBQDCCIXGCV-UHFFFAOYSA-N lead oxide Chemical compound [O-2].[Pb+2] HTUMBQDCCIXGCV-UHFFFAOYSA-N 0.000 description 13
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 12
- 238000001035 drying Methods 0.000 description 11
- WABPQHHGFIMREM-UHFFFAOYSA-N lead(0) Chemical compound [Pb] WABPQHHGFIMREM-UHFFFAOYSA-N 0.000 description 9
- 238000006243 chemical reaction Methods 0.000 description 8
- 239000002253 acid Substances 0.000 description 4
- PIJPYDMVFNTHIP-UHFFFAOYSA-L lead sulfate Chemical compound [PbH4+2].[O-]S([O-])(=O)=O PIJPYDMVFNTHIP-UHFFFAOYSA-L 0.000 description 4
- 238000003912 environmental pollution Methods 0.000 description 3
- 238000007796 conventional method Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000005484 gravity Effects 0.000 description 2
- 238000007654 immersion Methods 0.000 description 2
- 229910000464 lead oxide Inorganic materials 0.000 description 2
- 239000012466 permeate Substances 0.000 description 2
- 238000004904 shortening Methods 0.000 description 2
- KEQXNNJHMWSZHK-UHFFFAOYSA-L 1,3,2,4$l^{2}-dioxathiaplumbetane 2,2-dioxide Chemical compound [Pb+2].[O-]S([O-])(=O)=O KEQXNNJHMWSZHK-UHFFFAOYSA-L 0.000 description 1
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- ISWSIDIOOBJBQZ-UHFFFAOYSA-N Phenol Chemical compound OC1=CC=CC=C1 ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 description 1
- 239000011149 active material Substances 0.000 description 1
- 239000013543 active substance Substances 0.000 description 1
- 239000007795 chemical reaction product Substances 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 239000000376 reactant Substances 0.000 description 1
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
-
- 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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
Landscapes
- Secondary Cells (AREA)
Description
【0001】[0001]
【産業上の利用分野】本発明は、クラッド式鉛蓄電池の
製造方法に関するものである。The present invention relates to a method for manufacturing a clad lead-acid battery.
【0002】[0002]
【従来の技術】従来、クラッド式鉛蓄電池は、クラッド
チューブ内の芯金の回りに鉛粉を充填してクラッド式陽
極板を形成する充填工程の後に、該クラッド式陽極板と
ペースト式陰極板と隔離板とを電槽に組込んで電池を組
立てて、該電池内に電解液を注液して電槽化成すること
により製造していた。2. Description of the Related Art Conventionally, a clad type lead-acid battery has a cladding-type anode plate and a paste-type cathode plate after a filling step of filling lead powder around a core in a cladding tube to form a clad-type anode plate. The battery is assembled by assembling the battery and the separator in a battery case, and an electrolytic solution is injected into the battery to form a battery case.
【0003】通常のクラッド式陽極板では、化成時に電
解液を注入すると、クラッドチューブの外周より徐々に
該電解液が浸透していく。このときに、硫酸H2 SO4
と作用活物質中の酸化鉛PbOとが反応して、硫酸鉛P
bSO4 と水H2 Oと水素ガスが発生する。In an ordinary clad type anode plate, when an electrolytic solution is injected during chemical formation, the electrolytic solution gradually permeates from the outer periphery of the clad tube. At this time, sulfuric acid H 2 SO 4
Reacts with lead oxide PbO in the active material to form lead sulfate PbO.
bSO 4 , water H 2 O and hydrogen gas are generated.
【0004】これらの反応は、クラッドチューブの中心
部になるほど反応生成物により抑制されて、硫酸の浸透
が遅くなる。また、化成時の通電電流によりこのPbS
O4が陽極では、PbO2 に変換される。よって、硫酸
の反応物質への浸透が遅ければ、PbSO4 の生成から
PbO2 に変換される反応も遅くなる。[0004] These reactions are suppressed by reaction products near the center of the clad tube, and the permeation of sulfuric acid is slowed. In addition, the PbS
O 4 is converted to PbO 2 at the anode. Thus, the slower the sulfuric acid permeates the reactants, the slower the reaction from the production of PbSO 4 to the conversion to PbO 2 .
【0005】この電槽化成は、未化板の化成工程と既化
板の初充電工程とをまとめて1回の充電工程としてい
る。このように1回の充電で鉛粉を作用物質(Pb
O2 )に変換しなければならないために従来は、化成時
間として4〜5日を要していた。この電槽化成での通電
条件として連続充電では、通電中の効率が低下するため
に、通電途中に休止期間を入れた図2のような通電パタ
ーンとしている。[0005] In this battery case formation, the step of forming an unconverted plate and the step of initially charging a converted plate are combined into a single charging step. In this way, the lead powder is converted into the active substance (Pb
Conventionally, 4 to 5 days were required as the formation time because it had to be converted to O 2 ). In the continuous charging as a power supply condition in the battery case formation, the efficiency during power supply is reduced, so that the power supply pattern as shown in FIG.
【0006】[0006]
【発明が解決しようとする課題】しかしながら、従来の
このような製造方法では、電槽化成に長時間を要する上
に、未化成物質として硫酸鉛PbSO4 や酸化鉛PbO
が多く残留するという問題点があった。However, in such a conventional manufacturing method, it takes a long time to form a battery case, and lead sulphate PbSO 4 and lead oxide PbO 2 are used as unformed substances.
However, there is a problem that a large amount of phenol remains.
【0007】PbSO4 の残留が多いと、初期容量がで
にくく、使用中にPbSO4 が還元(充電)され、硫酸
H2 SO4 を生成して、比重の上昇が起こる。[0007] If PbSO 4 remains too much, it is difficult to obtain an initial capacity, and PbSO 4 is reduced (charged) during use to generate sulfuric acid H 2 SO 4 , resulting in an increase in specific gravity.
【0008】また、PbOが多いと、保管中にH2 SO
4 と反応してPbSO4 とH2 Oを生成して、比重の低
下をきたす。Further, when PbO is large, H 2 SO 2 is stored during storage.
Reacts with 4 to produce PbSO 4 and H 2 O, causing a decrease in specific gravity.
【0009】また、従来のこのような製造方法では、化
成中に休止を入れなければならないので、化成日数が4
〜5日と長時間を要する問題点があった。In addition, in such a conventional production method, since a pause must be made during chemical formation, the number of chemical formation days is four.
There is a problem that it takes a long time of up to 5 days.
【0010】本発明の目的は、化成後のPbO2 量の増
加と初期容量のアップを図ると共に、化成時間を従来よ
り短縮し、より短時間に製造を行うことができるクラッ
ド式鉛蓄電池の製造方法を提供することにある。An object of the present invention is to produce a clad type lead-acid battery capable of increasing the amount of PbO 2 after chemical formation and increasing the initial capacity, shortening the chemical formation time and shortening the production time. It is to provide a method.
【0011】[0011]
【課題を解決するための手段】上記の目的を達成するた
めの本発明の構成を説明すると、本発明に係るクラッド
式鉛蓄電池の製造方法は、クラッドチューブ内の芯金の
回りに鉛粉を充填してクラッド式陽極板を形成し、該ク
ラッド式陽極板を水中に浸漬し、引上げて乾燥させた
後、該クラッド式陽極板と陰極板と隔離板とを電槽に組
込んで電池を組立てて、該電池内に電解液を注液して電
槽化成することを特徴とする。Means for Solving the Problems To explain the constitution of the present invention for achieving the above object, a method of manufacturing a clad lead storage battery according to the present invention comprises the steps of: providing lead powder around a core in a clad tube; filled forms form a clad-type anode plate, the clad type anode plate was immersed in water, dried Te pulling, batteries incorporate and said clad type anode plate and the cathode plate and the separator plate to the container Is assembled, and an electrolytic solution is injected into the battery to form a battery case.
【0012】[0012]
【作用】このように、クラッドチューブ内の芯金の回り
に鉛粉を充填してクラッド式陽極板を形成し、該クラッ
ド式陽極板を水中に浸漬し、引上げて乾燥させると、乾
燥時に鉛粉が収縮し、芯金と該鉛粉との密着性が良くな
り、化成時に電流が流れ易くなる。特に、このようにク
ラッド式陽極板を水中に浸漬し、引上げて乾燥させる
と、化成し難い4塩基性硫酸鉛が生成されるを防止する
ことができ、化成を速やかに行わせることができる。 [Action] Thus, by filling the Namariko around the core metal of the cladding tube forms form a clad-type anode plate and immersing the clad type anode plate in water and dried Te pulling, when dry The lead powder shrinks, the adhesion between the core metal and the lead powder is improved, and current easily flows during chemical formation. In particular,
Immerse the ladder anode plate in water, pull it up and dry it
To prevent the formation of 4-basic lead sulfate which is difficult to form
And the formation can be performed promptly.
【0013】また、乾燥時に形成される蒸気の逃げ道と
して空隙が形成され、鉛粉層の多孔度が向上し、化成時
の化学反応が内部まで速やかに進行するようになる。[0013] Further, voids are formed as escape paths for vapor formed during drying, the porosity of the lead powder layer is improved, and the chemical reaction during chemical formation proceeds quickly to the inside.
【0014】このため、化成後のPbO2 量の増加を図
ることができ、従来よりも初期容量を増加させることが
できた。また、化成時間を短縮することができた。[0014] Therefore, it is possible to increase the PbO 2 amount after the chemical conversion, it was possible to increase the initial capacity than conventional. In addition, the formation time could be shortened.
【0015】特に、クラッド式陽極板を水中に浸漬して
から乾燥する工程をとると、希硫酸中に浸漬してから乾
燥する工程をとる場合に生ずる、処理手段の腐食の問題
や環境汚染の問題等がなくなり、また希硫酸を用いる場
合より低コストで安全に実施することができる。 In particular, the clad anode plate is immersed in water
In the process of drying from
The problem of corrosion of processing means that occurs when taking a drying step
Environment and environmental pollution are eliminated, and when dilute sulfuric acid is used,
It can be implemented safely at lower cost than in the case.
【0016】[0016]
【実施例】以下、本発明の実施例を詳細に説明する。Embodiments of the present invention will be described below in detail.
【0017】本実施例では、クラッドチューブ内の芯金
の回りに鉛粉を充填してクラッド式陽極板を形成し、該
クラッド式陽極板を比重 1.000、温度30〜40℃の水中に
所定時間浸漬放置して、該水を十分浸透させた後、引上
げて乾燥させる。[0017] In this embodiment, by filling the Namariko around the core metal of the cladding tube forms form a clad-type anode plate, predetermined the clad type anode plate density 1.000, in water at a temperature 30 to 40 ° C. Let it soak for a while, let it soak in the water , then pull it up
And dry .
【0018】しかる後、該クラッド式陽極板と陰極板と
隔離板とを電槽に組込んで電池を組立てて、該電池内に
電解液を注液して電槽化成を行う。Thereafter, the clad type anode plate, cathode plate and separator are assembled in a battery case to assemble a battery, and an electrolytic solution is injected into the battery to form a battery case.
【0019】このように、クラッドチューブ内の芯金の
回りに鉛粉を充填して得たクラッド式陽極板を水中に浸
漬し、引上げて乾燥させると、乾燥時に鉛粉が収縮し、
芯金と該鉛粉との密着性が良くなり、化成時に電流が流
れ易くなる。特に、このようにクラッド式陽極板を水中
に浸漬し、引上げて乾燥させる方法によれば、化成し難
い4塩基性硫酸鉛が生成されるを防止することができ、
化成を速やかに行わせることができる。 [0019] Thus, the clad type anode plate obtained by filling the Namariko around the core metal of the cladding tube was immersed in water, and dried Te pulling, Namariko shrinks during drying,
The adhesion between the core metal and the lead powder is improved, so that current easily flows during chemical formation. In particular, the clad anode plate is
According to the method of immersing in water, pulling and drying, it is difficult to form
4 basic lead sulfate can be prevented from being produced,
Chemical formation can be performed promptly.
【0020】また、乾燥時に形成される蒸気の逃げ道と
して空隙が形成され、鉛粉層の多孔度が向上し、化成時
の化学反応が内部まで速やかに進行するようになる。In addition, voids are formed as escape paths for vapor formed during drying, the porosity of the lead powder layer is improved, and the chemical reaction during chemical formation proceeds quickly to the inside.
【0021】このため、化成後のPbO2 量の増加を図
ることができ、従来よりも初期容量を増加させることが
できた。また、従来は化成日数が4〜5かかっていた
が、本発明によれば3日で化成を終了することができ
た。As a result, the amount of PbO 2 after chemical formation can be increased, and the initial capacity can be increased as compared with the conventional case. Conventionally, the number of formation days was 4 to 5, but according to the present invention, formation could be completed in 3 days.
【0022】クラッド式陽極板に本発明による前処理を
行うと、図1からも明らかなように、前処理をしない従
来品に比較して、化成途中のいずれの時点でも高いPb
O2値を示すことが確認された。When the pretreatment according to the present invention is performed on the clad anode plate, as is clear from FIG. 1, the Pb at any point during the formation is higher than that of the conventional product without pretreatment.
It was confirmed to show an O 2 value.
【0023】また、蓄電池の初期容量でも約5%程度容
量アップを図ることができた。Also, the initial capacity of the storage battery could be increased by about 5%.
【0024】[0024]
【発明の効果】以上説明したように、本発明に係るクラ
ッド式鉛蓄電池の製造方法では、クラッドチューブ内の
芯金の回りに鉛粉を充填してクラッド式陽極板を形成
し、該クラッド式陽極板を水中に浸漬し、引上げて乾燥
させるので、乾燥時に鉛粉が収縮し、芯金と該鉛粉との
密着性が良くなり、化成時に電流が流れ易くなる利点が
ある。特に、このようにクラッド式陽極板を水中に浸漬
し、引上げて乾燥させると、化成し難い4塩基性硫酸鉛
が生成されるを防止することができ、化成を速やかに行
わせることができる。 As described in the foregoing, in the manufacturing method of the type lead-acid battery according to the present invention, the shape formed clad type anode plate by filling Namariko around the core metal of the cladding tube
And, said cladding formula anode plate immersed in water, because drying <br/> is to Te pulling, Namariko shrinks during drying, better adhesion between the metal core and該鉛powder, the current at the time of chemical conversion flow There is an advantage that it becomes easy. Especially, immersing the clad anode plate in water like this
, Then pull up and dry, it is difficult to convert to 4 basic lead sulfate
Can be prevented, and
I can make it.
【0025】また、乾燥時に形成される蒸気の逃げ道と
して空隙が形成され、鉛粉層の多孔度が向上し、化成時
の化学反応が内部まで速やかに進行するようになる利点
がある。Further, there is an advantage that voids are formed as escape paths for vapor formed at the time of drying, the porosity of the lead powder layer is improved, and the chemical reaction during chemical formation proceeds quickly to the inside.
【0026】このため本発明によれば、化成後のPbO
2 量の増加を図ることができ、従来よりも初期容量を増
加させることができる。また、化成時間を従来より大幅
に短縮することができる。Therefore, according to the present invention, PbO after chemical formation
It is possible to achieve an increase in 2 volume can be increased <br/> pressurizing the initial capacity than conventional. Further, the formation time can be significantly reduced as compared with the conventional case.
【0027】更に、本発明のようにクラッド式陽極板を
水中に浸漬してから乾燥する工程をとると、希硫酸中に
浸漬してから乾燥する工程をとる場合に生ずる、処理手
段の腐食の問題や環境汚染の問題等がなくなり、また希
硫酸を用いる場合より低コストで安全に実施することが
できる。 Further, as in the present invention, a clad anode plate is used.
If you take the process of immersion in water and then drying,
A processing step that occurs when taking the step of immersion and drying
The problem of corroded stages and the problem of environmental pollution have been eliminated.
Safer implementation at lower cost than using sulfuric acid
it can.
【図1】本発明の方法での化成時における陽極板のPb
O2 値の分析結果と、従来の方法での化成時における陽
極板のPbO2 値の分析結果を示す比較図である。FIG. 1 shows Pb of an anode plate during chemical formation by the method of the present invention.
FIG. 5 is a comparison diagram showing the analysis results of the O 2 value and the analysis results of the PbO 2 value of the anode plate during chemical formation by a conventional method.
【図2】従来の方法での化成時の通電パターン図であ
る。FIG. 2 is an energization pattern diagram at the time of formation by a conventional method.
Claims (1)
を充填してクラッド式陽極板を形成し、該クラッド式陽
極板を水中に浸漬し、引上げて乾燥させた後、該クラッ
ド式陽極板と陰極板と隔離板とを電槽に組込んで電池を
組立てて、該電池内に電解液を注液して電槽化成するこ
とを特徴とするクラッド式鉛蓄電池の製造方法。1. A filled with Namariko around the core metal of the cladding tube forms form a clad-type anode plate, the clad type anode plate immersed in water, dried Te pulling, the cladding formula A method for manufacturing a clad lead storage battery, comprising: assembling a battery by incorporating an anode plate, a cathode plate, and a separator into a battery case, and pouring an electrolytic solution into the battery to form a battery case.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2406616A JP2626254B2 (en) | 1990-12-26 | 1990-12-26 | Manufacturing method of clad lead storage battery |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2406616A JP2626254B2 (en) | 1990-12-26 | 1990-12-26 | Manufacturing method of clad lead storage battery |
Publications (2)
Publication Number | Publication Date |
---|---|
JPH04223060A JPH04223060A (en) | 1992-08-12 |
JP2626254B2 true JP2626254B2 (en) | 1997-07-02 |
Family
ID=18516236
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2406616A Expired - Lifetime JP2626254B2 (en) | 1990-12-26 | 1990-12-26 | Manufacturing method of clad lead storage battery |
Country Status (1)
Country | Link |
---|---|
JP (1) | JP2626254B2 (en) |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5069525A (en) * | 1973-10-24 | 1975-06-10 | ||
JPS56138877A (en) * | 1980-03-31 | 1981-10-29 | Shin Kobe Electric Mach Co Ltd | Lead battery |
JPS6224556A (en) * | 1985-07-24 | 1987-02-02 | Furukawa Battery Co Ltd:The | Manufacture of positive plate for clad type lead-acid battery |
JPS6224555A (en) * | 1985-07-24 | 1987-02-02 | Furukawa Battery Co Ltd:The | Manufacture of positive plate for clad type lead-acid battery |
GB8802329D0 (en) * | 1988-02-03 | 1988-03-02 | Ici Plc | Low energy fuse & method of manufacture |
JPH01235166A (en) * | 1988-03-14 | 1989-09-20 | Japan Storage Battery Co Ltd | Manufacture of sealed clad type lead-acid battery |
JP2700465B2 (en) * | 1988-05-09 | 1998-01-21 | 関西酵素株式会社 | Toiletries containing lysozyme chloride |
-
1990
- 1990-12-26 JP JP2406616A patent/JP2626254B2/en not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
JPH04223060A (en) | 1992-08-12 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US4656706A (en) | Formation efficiency of positive plates of a lead-acid battery | |
US4415410A (en) | Forming of tetrabasic lead sulfate battery electrodes | |
JP2626254B2 (en) | Manufacturing method of clad lead storage battery | |
JP4923574B2 (en) | Lead acid battery | |
JPS62145664A (en) | Manufacture of sealed lead storage battery | |
US3532544A (en) | Method of manufacture of a negative electrode for a storage battery | |
JPH01304663A (en) | Lead storage battery and manufacture thereof | |
US2952726A (en) | Storage batteries | |
JPS58115775A (en) | Lead-acid battery | |
JPH09190816A (en) | Manufacture of electrode plate for tube type lead-acid battery | |
JPS61142668A (en) | Manufacture of lead storage battery | |
JPH08138657A (en) | Manufacture of electrode plate for lead-acid battery | |
JPS59132562A (en) | Manufacture of lead storage battery | |
JPS6293857A (en) | Manufacture of enclosed lead storage battery | |
JPS607070A (en) | Manufacture of sealed lead-acid battery | |
JPH0569263B2 (en) | ||
JPH04345756A (en) | Manufacture of lead storage battery electrode | |
JPS6293858A (en) | Manufacture of enclosed lead storage battery | |
JPH0433109B2 (en) | ||
JPH08130009A (en) | Forming method for clad type positive plate | |
JPS6136347B2 (en) | ||
JPS607069A (en) | Manufacture of sealed lead-acid battery | |
WO2008029419A2 (en) | Lead-acid battery plates | |
JPH05159776A (en) | Manufacture of clad positive plate for lead-acid battery | |
JPH09199158A (en) | Manufacture of negative electrode absorbing sealed lead-acid battery |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
A01 | Written decision to grant a patent or to grant a registration (utility model) |
Free format text: JAPANESE INTERMEDIATE CODE: A01 Effective date: 19970218 |