WO2022224623A1 - 鉛箔及びバイポーラ型鉛蓄電池 - Google Patents
鉛箔及びバイポーラ型鉛蓄電池 Download PDFInfo
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- WO2022224623A1 WO2022224623A1 PCT/JP2022/011073 JP2022011073W WO2022224623A1 WO 2022224623 A1 WO2022224623 A1 WO 2022224623A1 JP 2022011073 W JP2022011073 W JP 2022011073W WO 2022224623 A1 WO2022224623 A1 WO 2022224623A1
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- lead
- lead foil
- mass
- foil
- bipolar
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- 239000011888 foil Substances 0.000 title claims abstract description 97
- 239000002253 acid Substances 0.000 title claims abstract description 29
- 239000000758 substrate Substances 0.000 claims abstract description 30
- 238000005096 rolling process Methods 0.000 claims abstract description 21
- 238000005259 measurement Methods 0.000 claims abstract description 16
- 230000003746 surface roughness Effects 0.000 claims abstract description 9
- 238000004439 roughness measurement Methods 0.000 claims abstract description 7
- 230000002093 peripheral effect Effects 0.000 claims description 15
- 229910052802 copper Inorganic materials 0.000 claims description 4
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 40
- 239000010410 layer Substances 0.000 description 14
- 238000005498 polishing Methods 0.000 description 11
- 230000035515 penetration Effects 0.000 description 9
- 239000000853 adhesive Substances 0.000 description 7
- 230000001070 adhesive effect Effects 0.000 description 7
- 239000012790 adhesive layer Substances 0.000 description 7
- 229910000978 Pb alloy Inorganic materials 0.000 description 6
- 239000007774 positive electrode material Substances 0.000 description 6
- 238000000034 method Methods 0.000 description 5
- 230000000052 comparative effect Effects 0.000 description 4
- 239000007773 negative electrode material Substances 0.000 description 4
- 229910000831 Steel Inorganic materials 0.000 description 3
- 239000011149 active material Substances 0.000 description 3
- 239000003795 chemical substances by application Substances 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 229920005989 resin Polymers 0.000 description 3
- 239000011347 resin Substances 0.000 description 3
- 239000010959 steel Substances 0.000 description 3
- 229920000122 acrylonitrile butadiene styrene Polymers 0.000 description 2
- 238000004458 analytical method Methods 0.000 description 2
- IISBACLAFKSPIT-UHFFFAOYSA-N bisphenol A Chemical compound C=1C=C(O)C=CC=1C(C)(C)C1=CC=C(O)C=C1 IISBACLAFKSPIT-UHFFFAOYSA-N 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 230000003111 delayed effect Effects 0.000 description 2
- 239000008151 electrolyte solution Substances 0.000 description 2
- 238000004453 electron probe microanalysis Methods 0.000 description 2
- 229920006332 epoxy adhesive Polymers 0.000 description 2
- 239000003822 epoxy resin Substances 0.000 description 2
- 230000008595 infiltration Effects 0.000 description 2
- 238000001764 infiltration Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 229920000647 polyepoxide Polymers 0.000 description 2
- 239000000047 product Substances 0.000 description 2
- 241001422033 Thestylus Species 0.000 description 1
- 150000008065 acid anhydrides Chemical class 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- -1 amine compound Chemical class 0.000 description 1
- 230000001680 brushing effect Effects 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000003365 glass fiber Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 239000012466 permeate Substances 0.000 description 1
- 238000004611 spectroscopical analysis Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 230000002195 synergetic effect Effects 0.000 description 1
- 229920005992 thermoplastic resin Polymers 0.000 description 1
Images
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
- H01M4/66—Selection of materials
- H01M4/68—Selection of materials for use in lead-acid accumulators
- H01M4/685—Lead alloys
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C11/00—Alloys based on lead
- C22C11/06—Alloys based on lead with tin as the next major constituent
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/06—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
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/06—Lead-acid accumulators
- H01M10/12—Construction or manufacture
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/06—Lead-acid accumulators
- H01M10/18—Lead-acid accumulators with bipolar electrodes
-
- 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
- H01M4/14—Electrodes for 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
- H01M4/66—Selection of materials
- H01M4/665—Composites
- H01M4/667—Composites in the form of layers, e.g. coatings
-
- 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
- H01M4/73—Grids for lead-acid accumulators, e.g. frame plates
-
- 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
Definitions
- a bipolar lead-acid battery includes a bipolar electrode having a positive electrode, a negative electrode, and a substrate (bipolar plate) having a positive electrode on one surface and a negative electrode on the other surface.
- a conventional bipolar electrode has a positive electrode and a negative electrode provided on one surface and the other surface of the substrate, respectively, by providing lead foils on both surfaces of a substrate made of resin.
- Patent Document 1 discloses a lead alloy substrate having a surface roughness of 15 ⁇ m or more as an electrode of a lead storage battery.
- the lead foil and the resin substrate are joined with an adhesive. If sulfuric acid infiltrates the bonding interface, the adhesive chemically deteriorates. Furthermore, the lead foil undergoes growth deformation that expands with long-term use of the battery. Therefore, the chemical deterioration of the adhesive and the synergistic effect of the growth of the lead foil reduce the adhesive force between the lead foil and the substrate. When the adhesive strength is lowered, the lead foil is peeled off from the substrate and becomes a liquid leakage path, resulting in a drop in the voltage of the battery.
- the present invention has been made in view of the above problems, and aims to provide a lead foil and a bipolar lead-acid battery capable of suppressing voltage drop of the battery due to peeling of the lead foil from the substrate. purpose.
- the positive electrode 120 is made of lead or a lead alloy and includes a positive electrode lead foil 101 arranged on the one surface of the substrate 111, a positive electrode active material layer 103 arranged on the positive electrode lead foil 101, An adhesive layer 140 is provided between the one surface of the substrate 111 and the positive electrode lead foil 101 and bonds the one surface of the substrate 111 and the positive electrode lead foil 101 . That is, the adhesive layer 140, the positive electrode lead foil 101, and the positive electrode active material layer 103 are disposed on the one surface of the substrate 111 (the surface facing upward in FIGS. 2 and 3). They are stacked in order.
- the adhesive layer 140 disposed between one surface of the substrate 111 and the positive electrode lead foil 101 contains a main agent containing an epoxy resin and an amine compound. It is formed of a cured product of a reaction-curing adhesive that is cured by reacting with a contained curing agent.
- the peeling of the lead foil from the substrate is greatly affected by the infiltration of sulfuric acid from the end face of the electrode into the joint interface between the lead foil and the substrate. Furthermore, the inventors conducted an EPMA analysis on the electrode that had delaminated due to the use of the battery, and from the detected sulfuric acid component, it was confirmed that sulfuric acid infiltrated between the lead foil and the adhesive layer. did. In other words, as shown in FIG. 4 , the path of penetration of sulfuric acid is the interface between the lead foil (positive lead foil 101 in FIG. 4 ) and the adhesive layer 140 . The inventors of the present invention thought that by lengthening the permeation path, the permeation of sulfuric acid could be delayed, and came up with the present invention.
- the lengthening of the contact length X may be realized by changing the height of the roughness on the back surface of the lead foil, but it is possible to narrow the pitch of the unevenness without changing the height of the roughness. can be realized with As shown in FIG. 5, as compared with the pitch of the conventional unevenness shown in FIG. 5A, as shown in FIG. length increases. Further, since sulfuric acid permeates from the end face side of the electrode (positive electrode 120 or negative electrode 110), the contact length X may be limited to the outer peripheral edge of the lead foil.
- the outer peripheral edge of the lead foil is, for example, an area outside the area surrounded by the dotted line in the positive electrode lead foil 101 shown in FIG.
- the lead foil is made of lead or a lead alloy containing lead as a main component.
- the lead foil contains Sn, and the Sn content is preferably 0.4% by mass or more and 2% by mass or less.
- Sn content is preferably 0.4% by mass or more and 2% by mass or less.
- the lead foil according to the present embodiment can be manufactured using a rolling roll whose peripheral side surface has been roughened in advance when rolling.
- a rolling roll whose peripheral side surface has been roughened in advance when rolling.
- the peripheral side surface can be provided with unevenness that satisfies the contact length X described above, and the peripheral side surface can be roughened.
- the polishing may be performed a plurality of times while changing the polishing pressure. In this case, by gradually decreasing the polishing pressure, it is possible to form additional grooves by subsequent polishing in addition to the grooves formed by polishing, thereby increasing the contact length X.
- the rolling may be performed without providing unevenness on the peripheral side surface.
- the rolling rolls are provided with unevenness, it is preferable to use a hard material such as a chrome-plated product for the rolling rolls so that the roll meshes of the rolling rolls are not crushed.
- unevenness may be provided on the lead foil rolled by the rolling rolls using a steel brush or the like. In this case, unevenness satisfying the contact length X described above may be provided by brushing with a steel brush in directions of 0°, 45° and 90° with respect to the rolling direction.
- a chrome-plated rolling roll was ground with a grindstone having a coarse grain size.
- the grain size of the grindstone was set to #80.
- polishing was further performed with a weak polishing pressure of 0.02 to 0.03 MPa.
- a lead foil was produced by rolling using this rolling roll.
- the contact length X was measured by stylus surface roughness measurement, and the thickness of the lead foil was measured.
- the lead foil was rolled in the same manner under the condition of using a rolling roll having a contact length X of less than 150 ⁇ m on the peripheral side surface and under the condition of increasing the Bi content, and the contact length of the lead foil was prepared.
- X and thickness were measured.
- the ingot was rolled from 8 mm to 0.25 mm in thickness.
- the ingot was rolled from 8 mm to 0.10 mm in thickness. The reduction was set to 0.4 mm/pass or more.
- a constant potential test was performed on the prepared lead foil in order to evaluate the permeation distance of sulfuric acid.
- the prepared lead foil was adhered to an ABS resin plate using an epoxy adhesive, and subjected to a constant potential test.
- the epoxy adhesive a bisphenol A type epoxy resin and an acid anhydride curing agent were used.
- Hg/Hg 2 SO 4 was used as a reference electrode and held at a potential of 1350 mV.
- the constant potential test was implemented in the environment of 60 degreeC for 4 weeks. The distance that sulfuric acid penetrated into the interface between the ABS resin and the lead foil was measured by EPMA analysis of the cross section.
- the contact length X was 150 ⁇ m or more and 1800 ⁇ m or less, and the penetration distance of sulfuric acid was 5 mm or less, and good results were obtained.
- the contact length X was as short as less than 150 ⁇ m, and the penetration distance of sulfuric acid was more than 10 mm. This is because the contact length X, ie, the penetration path length of sulfuric acid, is short.
- Comparative Example 3 since the Bi content was large, the formability was poor, and edge cracks occurred at a plate thickness intermediate to the final finished thickness, so rolling was interrupted. In Comparative Example 3, good results were obtained with no cracks up to a plate thickness intermediate to the final finished thickness. From the above results, it was confirmed that the penetration of sulfuric acid can be delayed by increasing the contact length X as in the above embodiment, so that peeling of the lead foil from the substrate can be suppressed.
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Abstract
Description
本発明の一態様によれば、正極用鉛箔及び負極用鉛箔の少なくとも一方の鉛箔は、上記鉛箔である、バイポーラ型鉛蓄電池が提供される
本発明の一実施形態に係るバイポーラ型鉛蓄電池1の構造を、図1及び図2を参照しながら説明する。図1に示すバイポーラ型鉛蓄電池1は、負極110を平板状の第一プレート11に固定した第一プレートユニットと、電解層105を枠板状の第二プレート12の内側に固定した第二プレートユニットと、基板111の一方の面に正極120が形成され他方の面に負極110が形成されてなるバイポーラ電極130を枠板状の第三プレート13の内側に固定した第三プレートユニットと、正極120を平板状の第四プレート14に固定した第四プレートユニットと、を有する。基板111は熱可塑性樹脂で形成されている。
第一プレート11には負極端子107が固定されており、該第一プレート11に固定された負極110と負極端子107とは電気的に接続されている。
第四プレート14には正極端子108が固定されており、該第四プレート14に固定された正極120と正極端子108とは電気的に接続されている。
第一~第四プレート11~14は、例えば周知の成形樹脂によって形成されている。そして、第一~第四プレート11~14は、電解液が流出しないように、適宜の方法で内部が密閉状態となるよう互いに固定されている。
これらの正極120と負極110とは、適宜の方法で電気的に接続されている。
なお、図2に示すバイポーラ電極の断面図においては、負極110及び正極用活物質層103の図示は省略してある。
そして、バイポーラ型鉛蓄電池1は、正極120と負極110との間に電解層105を介在させてなるセル部材を交互に複数積層して組み付けることにより、セル部材同士を直列に接続した電池構成を有している。
本実施形態に係る鉛箔は、上述のバイポーラ型鉛蓄電池1における正極用鉛箔101及び負極用鉛箔102、つまりバイポーラ型鉛蓄電池1の集電体用の鉛箔である。なお、本実施形態では、鉛箔の一方の面であり、正極用活物質層103又は負極用活物質層104に対向して接触する面を表面とし、鉛箔の他方の面であり、基板111に対向して接触する面を裏面とする。また、鉛箔は、圧延ロールで圧延されることで、所定の厚みのものとして製造される。
また、硫酸は電極(正極120又は負極110)の端面側から浸潤するものであるから、接触長さXを上記に範囲とするのは、鉛箔の外周縁部のみとしてもよい。鉛箔の外周縁部は、例えば、図6に示す正極用鉛箔101における点線で囲んだ領域よりも外側の領域である。また、この外周縁部の幅W(鉛箔の周縁部先端から内側に向かう長さ)は、5mm以上とすることが好ましい。幅Wが5mm未満の場合、硫酸の侵入を遅らせる効果が不十分となる。
なお、鉛箔中の各組成の含有量は、発光分光分析法によって求められる。
以上で、特定の実施形態を参照して本発明を説明したが、これら説明によって発明を限定することを意図するものではない。本発明の説明を参照することにより、当業者には、開示された実施形態とともに種々の変形例を含む本発明の別の実施形態も明らかである。従って、特許請求の範囲に記載された発明の実施形態には、本明細書に記載したこれらの変形例を単独または組み合わせて含む実施形態も網羅すると解すべきである。
例えば、上記実施形態では、鉛箔の裏面に対して接触長さXを特定する構成としたが、本発明はかかる例に限定されない。例えば、鉛箔の裏面だけでなく、表面も裏面と同様な構成であってもよい。
実施例1~9,13~15及び比較例1~2では、鋳塊を厚さが8mmから0.25mmになるまで圧延した。また、実施例10~12では、鋳塊を厚さが8mmから0.10mmになるまで圧延した。なお、リダクションは0.4mm/パス以上とした。
101 正極用鉛箔
102 負極用鉛箔
103 正極用活物質層
104 負極用活物質層
105 電解層
110 負極
111 基板
120 正極
130 バイポーラ電極
140 接着剤層
Claims (6)
- バイポーラ型鉛蓄電池の集電体用の鉛箔であって、
前記バイポーラ型鉛蓄電池の基板に対向する裏面は、圧延方向に対して90度方向に触針式表面粗さ測定によって得られた断面曲線において、接触長さが150μm以上1800μm以下であり、
前記接触長さは、走査距離を4mmとし、測定間隔を0.5μmとした場合における、隣接測定点間の高さの差の絶対値を足し合わせた値である、鉛箔。 - 前記裏面の少なくとも外周縁部の前記接触長さが150μm以上1800μm以下であり、
前記外周縁部は、前記鉛箔の周縁部先端からの内側に向かう長さである幅は、5mm以上である、請求項1に記載の鉛箔。 - Snの含有量は、0.4質量%以上2質量%以下である、請求項1又は2に記載の鉛箔。
- Ca、Ag及びCuの中から1種以上を含有し、
Caの含有量は、0質量%超0.1質量%以下であり、
Agの含有量は、0質量%超0.05質量%以下であり
Cuの含有量は、0質量%超0.05質量%以下である、請求項1~3のいずれか1項記載の鉛箔。 - Biの含有量は、0質量%超0.004質量%以下である、請求項1~4のいずれか1項に記載の鉛箔。
- 正極用鉛箔及び負極用鉛箔の少なくとも一方の鉛箔は、請求項1~5のいずれか1項に記載の鉛箔である、バイポーラ型鉛蓄電池。
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CN202280027985.XA CN117121239A (zh) | 2021-04-20 | 2022-03-11 | 铅箔以及双极型铅蓄电池 |
BR112023021395A BR112023021395A2 (pt) | 2021-04-20 | 2022-03-11 | Folha de chumbo e bateria de armazenamento de chumbo ácido bipolar |
EP22791403.3A EP4329019A1 (en) | 2021-04-20 | 2022-03-11 | Lead foil and bipolar lead-acid battery |
JP2023516331A JPWO2022224623A1 (ja) | 2021-04-20 | 2022-03-11 | |
US18/489,509 US20240047698A1 (en) | 2021-04-20 | 2023-10-18 | Lead Foil And Bipolar Lead Acid Storage Battery |
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US18/489,509 Continuation US20240047698A1 (en) | 2021-04-20 | 2023-10-18 | Lead Foil And Bipolar Lead Acid Storage Battery |
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Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS4726633A (ja) * | 1971-03-29 | 1972-10-25 | ||
JP2004158433A (ja) * | 2002-10-18 | 2004-06-03 | Furukawa Battery Co Ltd:The | 鉛蓄電池用基板およびそれを用いた鉛蓄電池 |
JP2014529175A (ja) * | 2011-09-09 | 2014-10-30 | イースト ペン マニュファクチャリング カンパニー インコーポレーテッドEast Penn Manufacturing Co.,Inc. | 二極式電池およびプレート |
JP2020510968A (ja) * | 2017-03-03 | 2020-04-09 | イースト ペン マニュファクチャリング カンパニーEast Penn Manufacturing Co. | バイポーラ電池及びプレート |
JP2022060710A (ja) * | 2020-10-05 | 2022-04-15 | 古河電気工業株式会社 | 双極型鉛蓄電池 |
-
2022
- 2022-03-11 EP EP22791403.3A patent/EP4329019A1/en active Pending
- 2022-03-11 WO PCT/JP2022/011073 patent/WO2022224623A1/ja active Application Filing
- 2022-03-11 JP JP2023516331A patent/JPWO2022224623A1/ja active Pending
- 2022-03-11 BR BR112023021395A patent/BR112023021395A2/pt unknown
- 2022-03-11 CN CN202280027985.XA patent/CN117121239A/zh active Pending
-
2023
- 2023-10-18 US US18/489,509 patent/US20240047698A1/en active Pending
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS4726633A (ja) * | 1971-03-29 | 1972-10-25 | ||
JP2004158433A (ja) * | 2002-10-18 | 2004-06-03 | Furukawa Battery Co Ltd:The | 鉛蓄電池用基板およびそれを用いた鉛蓄電池 |
JP2014529175A (ja) * | 2011-09-09 | 2014-10-30 | イースト ペン マニュファクチャリング カンパニー インコーポレーテッドEast Penn Manufacturing Co.,Inc. | 二極式電池およびプレート |
JP2020510968A (ja) * | 2017-03-03 | 2020-04-09 | イースト ペン マニュファクチャリング カンパニーEast Penn Manufacturing Co. | バイポーラ電池及びプレート |
JP2022060710A (ja) * | 2020-10-05 | 2022-04-15 | 古河電気工業株式会社 | 双極型鉛蓄電池 |
Also Published As
Publication number | Publication date |
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JPWO2022224623A1 (ja) | 2022-10-27 |
BR112023021395A2 (pt) | 2023-12-19 |
US20240047698A1 (en) | 2024-02-08 |
CN117121239A (zh) | 2023-11-24 |
EP4329019A1 (en) | 2024-02-28 |
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