DE2721560A1 - Expanded metal grids used as lead accumulator plates - where stiff metal or plastic substrate is clad with lead-antimony alloy - Google Patents
Expanded metal grids used as lead accumulator plates - where stiff metal or plastic substrate is clad with lead-antimony alloyInfo
- Publication number
- DE2721560A1 DE2721560A1 DE19772721560 DE2721560A DE2721560A1 DE 2721560 A1 DE2721560 A1 DE 2721560A1 DE 19772721560 DE19772721560 DE 19772721560 DE 2721560 A DE2721560 A DE 2721560A DE 2721560 A1 DE2721560 A1 DE 2721560A1
- Authority
- DE
- Germany
- Prior art keywords
- lead
- antimony
- alloy
- metal
- clad
- 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.)
- Withdrawn
Links
- 229910052751 metal Inorganic materials 0.000 title claims abstract description 11
- 239000002184 metal Substances 0.000 title claims abstract description 11
- 229910001245 Sb alloy Inorganic materials 0.000 title claims abstract description 8
- 239000002140 antimony alloy Substances 0.000 title claims description 6
- 239000000758 substrate Substances 0.000 title abstract 6
- 229910052787 antimony Inorganic materials 0.000 claims abstract description 15
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 claims abstract description 5
- 229910052791 calcium Inorganic materials 0.000 claims abstract description 4
- 239000002131 composite material Substances 0.000 claims abstract description 4
- 230000007797 corrosion Effects 0.000 claims abstract description 4
- 238000005260 corrosion Methods 0.000 claims abstract description 4
- WATWJIUSRGPENY-UHFFFAOYSA-N antimony atom Chemical compound [Sb] WATWJIUSRGPENY-UHFFFAOYSA-N 0.000 claims description 12
- 239000012876 carrier material Substances 0.000 claims description 8
- 239000002142 lead-calcium alloy Substances 0.000 claims description 6
- 239000002253 acid Substances 0.000 claims description 4
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 claims description 3
- 239000011575 calcium Substances 0.000 claims description 3
- 239000007769 metal material Substances 0.000 claims description 2
- 229910045601 alloy Inorganic materials 0.000 abstract description 3
- 239000000956 alloy Substances 0.000 abstract description 3
- 238000012423 maintenance Methods 0.000 abstract description 2
- 238000005452 bending Methods 0.000 abstract 1
- 238000005253 cladding Methods 0.000 abstract 1
- 235000011149 sulphuric acid Nutrition 0.000 abstract 1
- 229910000978 Pb alloy Inorganic materials 0.000 description 5
- 238000007792 addition Methods 0.000 description 5
- 238000005266 casting Methods 0.000 description 5
- BUGBHKTXTAQXES-UHFFFAOYSA-N Selenium Chemical compound [Se] BUGBHKTXTAQXES-UHFFFAOYSA-N 0.000 description 3
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 3
- 239000007789 gas Substances 0.000 description 3
- 229910052711 selenium Inorganic materials 0.000 description 3
- 239000011669 selenium Substances 0.000 description 3
- 239000011135 tin Substances 0.000 description 3
- 229910052718 tin Inorganic materials 0.000 description 3
- 230000032683 aging Effects 0.000 description 2
- 229910052785 arsenic Inorganic materials 0.000 description 2
- RQNWIZPPADIBDY-UHFFFAOYSA-N arsenic atom Chemical compound [As] RQNWIZPPADIBDY-UHFFFAOYSA-N 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 230000003247 decreasing effect Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000004881 precipitation hardening Methods 0.000 description 2
- 238000007711 solidification Methods 0.000 description 2
- 230000008023 solidification Effects 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 1
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- 238000000137 annealing Methods 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 238000011049 filling Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 238000011068 loading method Methods 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 231100000572 poisoning Toxicity 0.000 description 1
- 230000000607 poisoning effect Effects 0.000 description 1
- 238000010791 quenching Methods 0.000 description 1
- 230000000171 quenching effect Effects 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- 229910052709 silver Inorganic materials 0.000 description 1
- 239000004332 silver Substances 0.000 description 1
- 229910052717 sulfur Inorganic materials 0.000 description 1
- 239000011593 sulfur Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 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
- H01M4/00—Electrodes
- H01M4/02—Electrodes composed of, or comprising, active material
- H01M4/64—Carriers or collectors
- H01M4/66—Selection of materials
- H01M4/68—Selection of materials for use in lead-acid accumulators
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M4/00—Electrodes
- H01M4/02—Electrodes composed of, or comprising, active material
- H01M4/64—Carriers or collectors
- H01M4/70—Carriers or collectors characterised by shape or form
- H01M4/72—Grids
- H01M4/74—Meshes or woven material; Expanded metal
- H01M4/745—Expanded metal
-
- 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
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Cell Electrode Carriers And Collectors (AREA)
Abstract
Description
Gitter für Bleiakkumulatoren Grids for lead batteries
Die Erfindung betrifft ein Gitter als Masseträger für Bleiakkumulatoren, bestehend aus einer band- oder blechförmig gewalzten Blei-Antimon-Legierung mit 0,1 bis 3,5 % Antimon.The invention relates to a grid as a mass carrier for lead batteries, consisting of a strip-shaped or sheet-shaped rolled lead-antimony alloy with 0.1 to 3.5% antimony.
Traditionell werden die Gitter aus Blei mit 4 bis 8 % Antimon oft mit Zusätzen von Arsen, Zinn, Kupfer, Selen, Schwefel oder Silber zur Erhöhung des Korrosionswiderstandes und der Härte sowie zur Verbesserung der Gießeigenschaften und zur Kornfeinung im Formguß gefertigt.Traditionally, the grids are often made from lead with 4 to 8% antimony with additions of arsenic, tin, copper, selenium, sulfur or silver to increase the Corrosion resistance and hardness as well as to improve the casting properties and made by casting for grain refinement.
Das Antimon bewirkt eine gute Haftung der Masse am positiven Gitter, so daß nur geringe Kapazitätsverluste während der Lebensdauer der Batterie entstehen. Sie haben aber auch einige Nachteile; denn sie sind relativ teuer und beim Laden geht etwas Antimon von der positiven Elektrode in Lösung und schlägt sich an der negativen Elektrode nieder, was zu einer Vergiftung der negativen Elektrode und zu Ladungsverlusten durch Selbstentladung bei gleichzeitiger Gasbildung führt. Des weiteren kommt es wegen der geringen Wasserstoffhochspannung von Antimon zu starker Gasbildung, wenn die Batterie überladen wird. Damit entsteht Wasserverlust, so daß die mit solchen Gittern versehenen Akkumulatoren von Zeit zu Zeit gewartet werden müssen.The antimony causes the compound to adhere well to the positive grid, so that only slight loss of capacity occurs during the life of the battery. But they also have some disadvantages; because they are relatively expensive and when loading some antimony goes into solution from the positive electrode and hits the negative electrode down, resulting in poisoning of the negative electrode and leads to a loss of charge due to self-discharge with simultaneous gas formation. Of others are too strong because of the low high hydrogen voltage of antimony Gas formation when the battery is overcharged. This results in water loss, so that the accumulators provided with such grids are serviced from time to time have to.
Zur Herstellung wartungsfreier Bleiakkumulatoren sind antimonarme Bleilegierungen mit einem Antimongehalt von 1,5 bis 2,5 % aus der DT-PS 21 51 733 bekannt.Low-antimony content is used to manufacture maintenance-free lead-acid batteries Lead alloys with an antimony content of 1.5 to 2.5% from DT-PS 21 51 733 known.
Mit abnehmendem Antimongehalt nimmt jedoch die mechanische Festigkeit ab. Die Festigkeit kann nur durch beschleunigte Abkühlung nach Erstarrung und nötigenfalls durch Löseglühen mit Abschrecken und durch Arsenzusatz erhöht werden.However, with decreasing antimony content, the mechanical strength decreases away. The strength can only go through accelerated cooling after solidification and if necessary increased by annealing with quenching and adding arsenic.
Die mit abnehmendem Antimongehalt zunehmende Neigung zur Großkörnigkeit und Bildung von Erstarrungsrissen und anderen Gußfehlern, die die Duktilität der Gitter herabsetzen, kann durch Selen als Feinkornzusatz behoben werden. Der weitere Zusatz von Zinn dient zur Verbesserung des Formfüllungsvermögens. Die genannten Maßnahmen gestatten zwar, die Vorzüge antimonarmer Gitter für Bleiakkumulatoren auszunutzen, sind aber durch Selen und Zinnzusatz, Wärmebehandlung und Auslagerung mit einem vergleichsweise beträchtlichen Aufwand verbunden.The tendency towards large grain size, which increases with decreasing antimony content and formation of solidification cracks and other casting defects that affect the ductility of the Reduce the grid can be eliminated by adding selenium as a fine grain additive. The other one The addition of tin serves to improve the mold filling capacity. The mentioned Measures allow the advantages of low-antimony grids for lead-acid batteries can be exploited, however, through the addition of selenium and tin, heat treatment and aging associated with a comparatively considerable effort.
Auf die Zugabe von Antimon kann nicht verzichtet werden, da dann die Festigkeit der Gitter erheblich abfallen würde.The addition of antimony cannot be dispensed with, since then the Strength of the grid would drop significantly.
Es ist die Aufgabe der vorliegenden Erfindung, ein als Masseträger dienendes Bleiakkumulatorengitter aus einer band- oder blechförmig gewalzten Bleilegierung mit 0,5 bis 3,5 % Antimon mit ausreichender Steifigkeit zu entwickeln.It is the object of the present invention to provide a mass carrier Serving lead-acid battery grid made of a strip-shaped or sheet-shaped rolled lead alloy with 0.5 to 3.5% antimony to develop with sufficient rigidity.
Die Lösung dieser Aufgabe besteht darin, daß eine korrosionsfeste und biegesteife Trägerwerkstoffschicht ein- oder beidseitig mit der blech- oder bandförmig gewalzten antimonarmen Bleischicht beschichtet und dieser Verbundwerkstoff in an sich bekannter Weise zu Streckmetall verarbeitet ist.The solution to this problem is that a corrosion-resistant and rigid carrier material layer on one or both sides with the sheet metal or strip-shaped rolled, low-antimony lead layer coated and this composite material is processed into expanded metal in a manner known per se.
Die Trägerwerkstoffschicht besteht aus einem blech-oder bandförmig gewalzten metallischen Werkstoff, auf den die Blei-Antimon-Legierung walzplattiert ist.The carrier material layer consists of a sheet-metal or band-shaped rolled metallic material onto which the lead-antimony alloy is roll-bonded is.
Bei einer vorzugsweisen Ausführungsform eines solchen Akkumulatorengitters ist die Trägerwerkstoffschicht aus einer Blei-Calcium-Legierung mit 0,05 bis 0,1 % Calcium gebildet.In a preferred embodiment of such a battery grid the carrier material layer is made of a lead-calcium alloy with 0.05 to 0.1 % Calcium formed.
Denn neben der Entwicklung von antimonarmen Bleilegierungen für Gitter von Bleiakkumulatoren ist in den letzten Jahren das Interesse an Blei-Calcium-Legierungen für die Herstellung von Akkumulatorengittern gewachsen, da die damit ausgerüsteten Akkumulatoren keine routinemäßige Wartung erfordern. Die Zugabe des Calciums bewirkt eine ausreichende Steifigkeit des Gitters durch Ausscheidungshärtung.Because in addition to the development of low-antimony lead alloys for grids of lead accumulators has been the interest in lead-calcium alloys in recent years grown for the production of accumulator grids, since those equipped with it Batteries do not require routine maintenance. The addition of the calcium causes sufficient rigidity of the grid through precipitation hardening.
Die Gitter werden im allgemeinen durch Gießen auf speziellen Gießanlagen hergestellt.The grids are generally made by casting on special casting machines manufactured.
Die Nachteile der aus Blei-Calcium-Legierungen gefertigten Gitter bestehen in einer vergleichsweise geringen Zyklenfestigkeit und einer großen Empfindlichkeit gegen Tiefentladungen, mit der Folge, daß sich die aktive Masse von dem positiven Gitter ldst oder sich eine isolierende Zwischenschicht bildet und damit unter Umständen ein völliger Kapazitatsverlust verbunden ist.The disadvantages of grids made from lead-calcium alloys consist in a comparatively low cycle stability and a high sensitivity against deep discharges, with the result that the active mass differs from the positive one Ldst ldst or an insulating intermediate layer is formed and thus under certain circumstances a complete loss of capacity is associated.
as Ablesen e Masse könnte man zwar verhindern, indem der @lei-Caleium-Legierung eine vergleichsweise @eri@ge M, @t@ @ugesetzt wird. Unter normalen @@eß@@@ing is @@@h aine @clche Legierung h ar@ d @a@cium mit Antimon eine Ver-@@@@g @@ @ un aich aus der Bleiscyhmelze sepa@@ert. The reading of the mass could be prevented by using the @ lei-Caleium alloy a comparatively @ eri @ ge M, @ t @ @u is set. Under normal @@ eß @@@ ing is @@@ h aine @clche alloy h ar @ d @ a @ cium with antimony a ver - @@@@ g @@ @ un aich from the lead cyan melt sepa @@ ert.
Beim Formguß hängt darüberhinaus die Härte und damit die Biegesteifigkeit von speziellen Kühlmaßnahmen und vom Altern ab, da die Ausscheidungshärtung nur langsam erfolgt und daher die gegossenen Gitter zunächst relativ weich sind.In the case of molding, the hardness and thus the flexural strength also depend from special cooling measures and from aging, since the precipitation hardening only takes place slowly and therefore the cast grids are initially relatively soft.
Diese Nachteile lassen sich mit dem erfindungsgemäß aufgebauten, zu Streckmetall verarbeiteten Gitter beseitigen.These disadvantages can be met with the one constructed according to the invention Eliminate mesh processed by expanded metal.
Es ist im Rahmen der Ausgestaltung der Erfindung möglich, anstelle einer metallischen eine aus schwefelsäurebeständigem Kunststoff bestehende Trägerwerkstoffschicht zu verwenden.It is possible within the scope of the embodiment of the invention instead a metallic carrier material layer consisting of sulfuric acid-resistant plastic to use.
Die Erfindung gestattet, die Vorteile von aus antimonarmen Bleilegierungen bestehenden Gittern mit den Vorteilen von Gittern, die aus Blei-Calcium-Legierungen gefertigt sind, unter Vermeidung der Nachteile zu kombinieren, so daß eine gute Haftung für die aktive Masse bei guter Steifigkeit der Gitter gewährleistet ist und die Vergiftung der Gitter mit nachfolgender Selbstentladung und Gasen unterbleibt.The invention allows the advantages of low-antimony lead alloys existing grids with the advantages of grids made from lead-calcium alloys are made to combine while avoiding the disadvantages, so that a good Adhesion for the active mass with good rigidity of the grid is guaranteed and the grids are not poisoned with subsequent self-discharge and gases.
Die Zeichnung zeigt beispielhaft in Fig. 1 die Seitenansicht und Fig. 2 einen Schnitt entlang der Linie I - I der Fig. 1 des erfindungsgemäß gestalteten Verbund-Streckmetall-Gitters, bei dem auf ein 0,5 mm dickes Blech 1 einer Blei-Calcium-Legierung beidseitig mit je einem 0,25 mm dicken Blech 2, 3 einer antimonarmen Bleilegierung plattiert ist.The drawing shows, by way of example, the side view in FIG. 1 and FIG. 2 shows a section along the line I - I of FIG. 1 of the one designed according to the invention Composite expanded metal grid, in which on a 0.5 mm thick sheet 1 of a lead-calcium alloy on both sides with a 0.25 mm thick sheet 2, 3 of a low-antimony lead alloy is plated.
L e e r s e i t eL e r s e i t e
Claims (4)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19772721560 DE2721560A1 (en) | 1977-05-13 | 1977-05-13 | Expanded metal grids used as lead accumulator plates - where stiff metal or plastic substrate is clad with lead-antimony alloy |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19772721560 DE2721560A1 (en) | 1977-05-13 | 1977-05-13 | Expanded metal grids used as lead accumulator plates - where stiff metal or plastic substrate is clad with lead-antimony alloy |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE2721560A1 true DE2721560A1 (en) | 1978-11-16 |
Family
ID=6008820
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DE19772721560 Withdrawn DE2721560A1 (en) | 1977-05-13 | 1977-05-13 | Expanded metal grids used as lead accumulator plates - where stiff metal or plastic substrate is clad with lead-antimony alloy |
Country Status (1)
| Country | Link |
|---|---|
| DE (1) | DE2721560A1 (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2941814A1 (en) * | 1979-10-16 | 1981-04-30 | Varta Batterie Ag, 3000 Hannover | Electrode plate using thin expanded metal substrate - where current collector zone is thickened by electroplating with metal to increase its current carrying capacity |
| FR2526690A1 (en) * | 1982-05-11 | 1983-11-18 | Furukawa Electric Co Ltd | METHOD AND PLANT FOR CONTINUOUSLY MANUFACTURING A LEAD OR LEAD ALLOY BAND AND THE BAND THUS OBTAINED |
| EP0216782A4 (en) * | 1984-11-19 | 1987-03-26 | Revere Copper & Brass Inc | Laminated lead alloy strip for battery grid application and electrochemical cells utilizing same. |
| US4761356A (en) * | 1985-02-26 | 1988-08-02 | Matsushita Electric Industrial Co., Ltd. | Grid for lead storage batteries |
| US4805277A (en) * | 1986-06-05 | 1989-02-21 | Matsushita Electric Industrial Co., Ltd. | Process for producing a grid for use in lead acid batteries |
| US4906540A (en) * | 1989-06-15 | 1990-03-06 | Matsushita Electric Industrial Co., Ltd. | Lead-acid battery having a grid base of a lead-calcium alloy and a layer of lead-antimony-stannum alloy roll-bonded to the grid base |
| US4939051A (en) * | 1986-06-05 | 1990-07-03 | Matsushita Electric Industrial Co., Ltd. | Grid for use in lead acid batteries and process for producing same |
| EP1615277A4 (en) * | 2003-03-18 | 2008-06-04 | Matsushita Electric Industrial Co Ltd | LEAD ACCUMULATOR, AND PROCESS FOR PRODUCING LATTICE BODY FOR LEAD ACCUMULATOR |
-
1977
- 1977-05-13 DE DE19772721560 patent/DE2721560A1/en not_active Withdrawn
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2941814A1 (en) * | 1979-10-16 | 1981-04-30 | Varta Batterie Ag, 3000 Hannover | Electrode plate using thin expanded metal substrate - where current collector zone is thickened by electroplating with metal to increase its current carrying capacity |
| FR2526690A1 (en) * | 1982-05-11 | 1983-11-18 | Furukawa Electric Co Ltd | METHOD AND PLANT FOR CONTINUOUSLY MANUFACTURING A LEAD OR LEAD ALLOY BAND AND THE BAND THUS OBTAINED |
| EP0216782A4 (en) * | 1984-11-19 | 1987-03-26 | Revere Copper & Brass Inc | Laminated lead alloy strip for battery grid application and electrochemical cells utilizing same. |
| US4761356A (en) * | 1985-02-26 | 1988-08-02 | Matsushita Electric Industrial Co., Ltd. | Grid for lead storage batteries |
| US4805277A (en) * | 1986-06-05 | 1989-02-21 | Matsushita Electric Industrial Co., Ltd. | Process for producing a grid for use in lead acid batteries |
| US4939051A (en) * | 1986-06-05 | 1990-07-03 | Matsushita Electric Industrial Co., Ltd. | Grid for use in lead acid batteries and process for producing same |
| US4906540A (en) * | 1989-06-15 | 1990-03-06 | Matsushita Electric Industrial Co., Ltd. | Lead-acid battery having a grid base of a lead-calcium alloy and a layer of lead-antimony-stannum alloy roll-bonded to the grid base |
| EP1615277A4 (en) * | 2003-03-18 | 2008-06-04 | Matsushita Electric Industrial Co Ltd | LEAD ACCUMULATOR, AND PROCESS FOR PRODUCING LATTICE BODY FOR LEAD ACCUMULATOR |
| US7658774B2 (en) | 2003-03-18 | 2010-02-09 | Panasonic Corporation | Method of producing lattice body for lead storage battery, and lead storage battery |
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| Date | Code | Title | Description |
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| 8130 | Withdrawal |