JP4062817B2 - Lead acid battery and manufacturing method thereof - Google Patents

Lead acid battery and manufacturing method thereof Download PDF

Info

Publication number
JP4062817B2
JP4062817B2 JP15907299A JP15907299A JP4062817B2 JP 4062817 B2 JP4062817 B2 JP 4062817B2 JP 15907299 A JP15907299 A JP 15907299A JP 15907299 A JP15907299 A JP 15907299A JP 4062817 B2 JP4062817 B2 JP 4062817B2
Authority
JP
Japan
Prior art keywords
lead
width
lead alloy
bone
alloy sheet
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
Application number
JP15907299A
Other languages
Japanese (ja)
Other versions
JP2000348734A (en
Inventor
正人 石渡
傑 ▲高▼松
善博 村田
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Panasonic Corp
Panasonic Holdings Corp
Original Assignee
Panasonic Corp
Matsushita Electric Industrial Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Panasonic Corp, Matsushita Electric Industrial Co Ltd filed Critical Panasonic Corp
Priority to JP15907299A priority Critical patent/JP4062817B2/en
Publication of JP2000348734A publication Critical patent/JP2000348734A/en
Application granted granted Critical
Publication of JP4062817B2 publication Critical patent/JP4062817B2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/10Energy storage using batteries

Landscapes

  • Cell Electrode Carriers And Collectors (AREA)

Description

【0001】
【発明の属する技術分野】
本発明は鉛蓄電池及びその製造法に関するものである。
【0002】
【従来の技術】
近年、鉛蓄電池の生産性向上を目的として、その格子体の製造法として、鉛合金シートをエキスパンド加工し、連続的にスリットを形成させるエキスパンド加工が広く用いられるようになってきた。このエキスパンド加工法には、そのスリット形成方法によってレシプロ方式と、ロータリー方式に大別される。生産速度の向上及び格子目の微細化を両立するためには、レシプロ方式よりロータリー方式が有利である。
【0003】
【発明が解決しようとする課題】
ロータリー方式によるエキスパンド加工法を用いて格子体を製造した場合、鉛シートはまず互いに平行な複数条のスリットを千鳥状に形成されると同時に、このスリットにより形成される線状部が、鉛シートの表裏両方向に交互に凸状に塑性変形される。このスリットが形成された鉛シートを展開することにより網目部を形成する。しかし、スリットにより形成される線状部が、鉛シートの表裏両方向に交互に凸状に塑性変形され、これを展開して網目部とするため、格子の骨部がねじれてしまい、結節部におけるクラックの発生や応力腐食がおこりやすく、鉛蓄電池の寿命低下の原因となっていた。
【0004】
本発明は上記課題を解決するものであり、ロータリー方式で製造されたエキスパンド格子を用いることにより、生産性が向上し、かつ寿命特性が低下しない鉛蓄電池を提供することを目的とする。
【0005】
【課題を解決するための手段】
本発明は上記目的を達成するために、錫を0.6〜2.0重量%含有する鉛合金からなり、四辺形の網目部が形成され、この少なくとも1辺に集電部が備えられた格子体を用いた鉛蓄電池であって、前記網目部は骨部とこの骨部と骨部とを結ぶ結節部とからなり、前記骨部はねじれており、前記骨部の幅(A)と前記結節部の幅(B)とが、1.0A≦B≦3.0Aとなっていることを特徴とする鉛蓄電池を示すものである。
【0006】
さらに、本発明は、互いに平行な複数条のスリットを断続的に鉛合金シートの長手方向に沿って千鳥状になるよう形成するとともに、互いに平行に隣接しあうスリットにより形成される線条部を鉛合金シート面から表裏両方向に交互に凸状に突出するよう塑性変形させた後、この鉛合金シートを幅方向へ展開伸張することにより形成した網目部を格子体として用いる鉛蓄電池の製造法において、前記鉛合金は錫を0.6〜2.0重量%含有し、かつ前記線条部の幅(A)と前記スリットとスリットとの間の幅(B)との関係が1.0A≦B≦3.0Aとしたことを特徴とする鉛蓄電池の製造法を示すものである。また、上記の製造法によって製造された鉛蓄電池は、骨部はねじれている。
【0007】
【発明の実施の形態】
本発明の一実施形態では、互いに平行な複数条のスリットを断続的に鉛シートの長手方向に沿って千鳥状になるよう形成するとともに、互いに平行に隣接しあうスリットにより形成される線条部を鉛合金シート面から表裏両方向に交互に凸状に突出するよう塑性変形させた後、この鉛合金シートを幅方向へ展開伸張することにより形成した網目部を格子体として用いる鉛蓄電池の製造法において、格子骨の幅寸法(A)を、結節部の幅寸法(B)に対し、1.0A≦B≦3.0Aとすることを特徴とし、かつ鉛シート合金が錫を0.6〜2.0重量%含有する構成により、格子体結節部の腐食進行による、鉛蓄電池の容量低下及び寿命低下を抑制する作用を有する。
【0008】
【実施例】
ここでロータリーエキスパンド方式について簡単に説明する。図1に示すように、円周部に凸状加工刃1を所定のピッチで配置した円盤状カッター2(2’)を、所定の間隔で複数枚重ね合わせたロール3(3’)の対に鉛合金シート4を通過させ、シートに凸状加工刃1が押し付けられることにより、図2に示すような格子骨となる線条部5が鉛合金シート4の面に対して上下方向に互いに逆向きの湾曲状に塑性変形される。このような構成により鉛合金シート4は回転するロール対3(3’)間を通過する際に円盤状カッター2(2’)によりせん断を受け、スリットが千鳥状に形成される。線条部5が形成された鉛合金シート4を幅方向に展開伸張して図3に示したような格子体が形成される。図3に9で示される幅が格子骨の幅寸法(A)であり、10で示される幅が結節部の幅寸法(B)である。通常、これ以降の段階で活物質となるペーストが充填された後に、所定の寸法に切断されて極板が形成される。
【0009】
前記したロータリーエキスパンド方式にて10種類の鉛蓄電池用正極格子体(格子体A〜J)を格子骨の幅寸法(A)と、結節部の幅寸法(B)を表1に示した通り変化させて作成した。鉛合金シートは合金Pb―0.06wt%Ca−2.0wt%Snからなる鋳造板(15mm厚み)をそれぞれ冷間圧延し、厚さ1.0mmの鉛合金シートとして使用した。
【0010】
【表1】

Figure 0004062817
【0011】
表1に示した格子体についてエキスパンド網目部の結節部におけるクラックの発生率を顕微鏡観察した。この結果を表2に示す。
【0012】
【表2】
Figure 0004062817
【0013】
表2に示した結果から、本発明による結節部の幅寸法(B)を格子骨の幅寸法(A)の1.0倍以上にすることによりクラックの発生を抑制することが確認された。また、格子EおよびJについては結節部のクラックは発生しないが、結節部の強度が強すぎて格子骨部で骨切れを起こしてしまうことが確認された。結節部におけるクラックの発生を抑制する効果は、結節部の幅寸法(B)を格子骨の幅寸法(A)の1.0倍以上にすることにより得られるが3.0倍を超えると副作用として骨切れを生じることが確認された。
【0014】
次に、表3に示した鉛合金シートを作成し、引張り強度および伸び率を測定した。
【0015】
鉛合金シートは合金A(Pb―0.06wt%Ca−0.4wt%Sn)、合金B(Pb―0.06wt%Ca−0.6wt%Sn)、合金C(Pb―0.06wt%Ca−2.0wt%Sn)、および合金D(Pb―0.06wt%Ca−2.5wt%Sn)からなる鋳造板(15mm厚み)をそれぞれ冷間圧延し、厚さ1.0mmの鉛合金シートA、B、CおよびDとした。これらのシートのエージング後の引張り強度および伸び率は表3に示した通りであった。
【0016】
【表3】
Figure 0004062817
【0017】
前記した合金シートを使用し、表4に示した8種類の格子体を作成し、これに鉛粉を水および希硫酸で混練したペーストを充填し、熟成乾燥して正極板とした。
【0018】
【表4】
Figure 0004062817
【0019】
この正極板を負極板およびセパレータと組み合わせて自動車用の鉛蓄電池(55D23形)を作成した。これらの電池についてJIS規格(D5301)で規定される軽負荷寿命試験を雰囲気温度75℃の気相中で実施した。表5に電池の構成と前記した試験の結果を示す。なお、寿命試験結果は、電池Aの寿命を100とした時の指数で表記した。
【0020】
【表5】
Figure 0004062817
【0021】
表5より、合金B、CおよびDを用いた電池の寿命特性が良好な結果であることがわかる。つまり、錫を0.6%以上含む合金シートを使用することにより寿命特性を向上することができる。但し格子体を作成する際に、合金Dを用いた場合、錫を2.5%含有するため表3にも示したように引張り強度が強くなる反面、伸び率が低く格子体を展開する際に展開不十分が多く発生した。
【0022】
つまり、結節部の幅寸法(B)を格子骨の幅寸法(A)の1.0倍以上3.0倍以下により、結節部におけるクラックの発生を抑制する効果は有するが、使用する鉛合金シートが、錫を0.6%以上含まないと電池寿命特性に効果が得られないことが確認された。
【0023】
本発明の構成によれば生産性に優れたロータリーエキスパンド格子体の課題を解決し、鉛蓄電池の寿命向上を図ることができる。
【図面の簡単な説明】
【図1】一般的なロータリー式によるエキスパンド加工工程を示す図
【図2】一般的なロータリー式エキスパンド加工工程により鉛合金シートにスリット形成された状態を示す図
【図3】一般的なロータリー式によるエキスパンド格子体を示す図
【符号の説明】
1 凸状加工刃
2、2’ 円盤状カッター
3、3’ ロール対
4 鉛合金シート
5 線条部
6 結節部
7 切断位置
8 格子体
9 結節部の幅寸法
10 格子骨の幅寸法[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a lead storage battery and a method for manufacturing the same.
[0002]
[Prior art]
In recent years, for the purpose of improving the productivity of lead-acid batteries, as a method for manufacturing the lattice body, an expanding process in which a lead alloy sheet is expanded and a slit is continuously formed has been widely used. This expanding method is roughly classified into a reciprocating method and a rotary method according to the slit forming method. The rotary method is more advantageous than the reciprocating method in order to achieve both improvement in production speed and finer lattice.
[0003]
[Problems to be solved by the invention]
When the grid is manufactured using the rotary process, the lead sheet is first formed with a plurality of parallel slits in a staggered pattern, and at the same time, the linear portion formed by the slits is a lead sheet. The plastic deformation is alternately convex in both the front and back directions. A mesh portion is formed by developing the lead sheet on which the slits are formed. However, the linear portion formed by the slit is plastically deformed in a convex shape alternately in both the front and back directions of the lead sheet, and this is expanded to form a mesh portion. Cracks and stress corrosion are likely to occur, causing a decrease in the life of the lead-acid battery.
[0004]
The present invention solves the above-described problems, and an object of the present invention is to provide a lead storage battery in which productivity is improved and life characteristics are not deteriorated by using an expanded lattice manufactured by a rotary method.
[0005]
[Means for Solving the Problems]
In order to achieve the above object, the present invention comprises a lead alloy containing 0.6 to 2.0% by weight of tin, a quadrilateral mesh portion is formed, and a current collecting portion is provided on at least one side thereof. A lead-acid battery using a lattice body, wherein the mesh portion includes a bone portion and a nodule portion connecting the bone portion and the bone portion, the bone portion being twisted, and the width (A) of the bone portion. The lead storage battery is characterized in that the width (B) of the knot portion is 1.0A ≦ B ≦ 3.0A.
[0006]
Furthermore, the present invention forms a plurality of slits parallel to each other in a staggered manner along the longitudinal direction of the lead alloy sheet, and a linear portion formed by slits adjacent to each other in parallel. In a method of manufacturing a lead-acid battery using a mesh portion formed by expanding and stretching the lead alloy sheet in the width direction after plastic deformation so as to project alternately and convexly in both front and back directions from the lead alloy sheet surface The lead alloy contains 0.6 to 2.0% by weight of tin, and the relationship between the width (A) of the linear portion and the width (B) between the slits is 1.0A ≦ The manufacturing method of the lead acid battery characterized by having set B <= 3.0A is shown. Further, the lead-acid battery produced by the above production method, the bone portion is twisted.
[0007]
DETAILED DESCRIPTION OF THE INVENTION
In one embodiment of the present invention, a plurality of slits parallel to each other are intermittently formed so as to be staggered along the longitudinal direction of the lead sheet, and the filaments are formed by slits adjacent to each other in parallel. A lead-acid battery manufacturing method using a mesh portion formed by expanding and stretching the lead alloy sheet in the width direction after plastic deformation of the lead alloy sheet so as to protrude alternately in both front and back directions from the lead alloy sheet surface In the present invention, the width dimension (A) of the lattice bone is 1.0A ≦ B ≦ 3.0A with respect to the width dimension (B) of the nodule portion, and the lead sheet alloy has a tin content of 0.6 to 0.6A. The composition containing 2.0% by weight has the effect of suppressing the capacity reduction and the life reduction of the lead storage battery due to the progress of corrosion of the grid nodule.
[0008]
【Example】
Here, the rotary expanding system will be briefly described. As shown in FIG. 1, a pair of rolls 3 (3 ′) in which a plurality of disk-like cutters 2 (2 ′) having convex machining blades 1 arranged at a predetermined pitch on the circumferential portion are overlapped at a predetermined interval. The lead alloy sheet 4 is allowed to pass through, and the convex processing blade 1 is pressed against the sheet, so that the line portions 5 that become lattice bones as shown in FIG. It is plastically deformed in a reverse curve. With such a configuration, the lead alloy sheet 4 is sheared by the disk-like cutter 2 (2 ′) when passing between the rotating roll pairs 3 (3 ′), and slits are formed in a staggered manner. The lead alloy sheet 4 on which the linear portions 5 are formed is expanded and expanded in the width direction to form a lattice body as shown in FIG. The width indicated by 9 in FIG. 3 is the width dimension (A) of the lattice bone, and the width indicated by 10 is the width dimension (B) of the nodule portion. Usually, after being filled with a paste as an active material at a later stage, the electrode plate is formed by cutting into a predetermined size.
[0009]
10 types of lead-acid battery positive grids (lattices A to J) for the above-described rotary expand system change the grid bone width (A) and knot width (B) as shown in Table 1. I made it. As the lead alloy sheet, a cast plate (15 mm thickness) made of the alloy Pb-0.06 wt% Ca-2.0 wt% Sn was cold-rolled and used as a lead alloy sheet having a thickness of 1.0 mm.
[0010]
[Table 1]
Figure 0004062817
[0011]
With respect to the lattice shown in Table 1, the occurrence rate of cracks in the nodule portion of the expanded mesh portion was observed with a microscope. The results are shown in Table 2.
[0012]
[Table 2]
Figure 0004062817
[0013]
From the results shown in Table 2, it was confirmed that the occurrence of cracks was suppressed by setting the width dimension (B) of the nodule portion according to the present invention to 1.0 times or more the width dimension (A) of the lattice bone. In addition, cracks in the nodule portions did not occur in the lattices E and J, but it was confirmed that the strength of the nodule portions was too strong and bone breakage occurred in the lattice bone portions. The effect of suppressing the occurrence of cracks in the nodule portion is obtained by making the width dimension (B) of the nodule part 1.0 times or more the width dimension (A) of the lattice bone. As a result, it was confirmed that bone fractures occurred.
[0014]
Next, lead alloy sheets shown in Table 3 were prepared, and tensile strength and elongation were measured.
[0015]
Lead alloy sheets are alloy A (Pb-0.06 wt% Ca-0.4 wt% Sn), alloy B (Pb-0.06 wt% Ca-0.6 wt% Sn), alloy C (Pb-0.06 wt% Ca). -2.0 wt% Sn) and a cast plate (15 mm thickness) made of alloy D (Pb-0.06 wt% Ca-2.5 wt% Sn), respectively, are cold-rolled and lead alloy sheet having a thickness of 1.0 mm A, B, C and D. The tensile strength and elongation after aging of these sheets were as shown in Table 3.
[0016]
[Table 3]
Figure 0004062817
[0017]
Using the above-described alloy sheet, eight types of lattice bodies shown in Table 4 were prepared, filled with a paste obtained by kneading lead powder with water and dilute sulfuric acid, and aged and dried to obtain a positive electrode plate.
[0018]
[Table 4]
Figure 0004062817
[0019]
This positive electrode plate was combined with a negative electrode plate and a separator to produce a lead acid battery (55D23 type) for automobiles. These batteries were subjected to a light load life test defined by JIS standard (D5301) in a gas phase at an ambient temperature of 75 ° C. Table 5 shows the configuration of the battery and the results of the test described above. The life test result was expressed as an index when the life of the battery A was taken as 100.
[0020]
[Table 5]
Figure 0004062817
[0021]
From Table 5, it can be seen that the battery life characteristics using Alloys B, C and D are good results. In other words, the life characteristics can be improved by using an alloy sheet containing 0.6% or more of tin. However, when alloy D is used when creating the lattice, 2.5% tin is contained so that the tensile strength is increased as shown in Table 3, while the elongation is low and the lattice is expanded. Many inadequate deployments occurred.
[0022]
That is, although the width dimension (B) of the nodule portion is 1.0 to 3.0 times the width dimension (A) of the lattice bone, the lead alloy used has the effect of suppressing the occurrence of cracks in the nodule portion. It was confirmed that if the sheet does not contain 0.6% or more of tin, the effect on the battery life characteristics cannot be obtained.
[0023]
According to the configuration of the present invention, it is possible to solve the problem of the rotary expanded lattice body excellent in productivity and to improve the life of the lead storage battery.
[Brief description of the drawings]
FIG. 1 is a diagram showing a general rotary type expanding process. FIG. 2 is a diagram showing a state in which a lead alloy sheet is slit by a general rotary type expanding process. FIG. 3 is a general rotary type. Diagram showing the expanded lattice by [Description of symbols]
DESCRIPTION OF SYMBOLS 1 Convex processing blade 2, 2 'Disk shaped cutter 3, 3' Roll pair 4 Lead alloy sheet 5 Line part 6 Knot part 7 Cutting position 8 Lattice body 9 Width dimension 10 knot part width dimension

Claims (2)

錫を0.6〜2.0重量%含有する鉛合金からなり、四辺形の網目部が形成され、この少なくとも1辺に集電部が備えられた格子体を用いた鉛蓄電池であって、前記網目部は骨部とこの骨部と骨部とを結ぶ結節部とからなり、前記骨部はねじれており、前記骨部の幅(A)と前記結節部の幅(B)とが、1.0A≦B≦3.0Aとなっていることを特徴とする鉛蓄電池。It is a lead storage battery using a grid body made of a lead alloy containing 0.6 to 2.0% by weight of tin, having a quadrilateral mesh part, and having a current collector part on at least one side thereof, The mesh part is composed of a bone part and a nodule part connecting the bone part and the bone part, the bone part is twisted, and the width (A) of the bone part and the width (B) of the nodule part are: The lead acid battery characterized by being 1.0A <= B <= 3.0A. 互いに平行な複数条のスリットを断続的に鉛合金シートの長手方向に沿って千鳥状になるよう形成するとともに、互いに平行に隣接しあうスリットにより形成される線条部を鉛合金シート面から表裏両方向に交互に凸状に突出するよう塑性変形させた後、この鉛合金シートを幅方向へ展開伸張することにより形成した網目部を格子体として用いる鉛蓄電池の製造法において、前記鉛合金は錫を0.6〜2.0重量%含有し、かつ前記線条部の幅(A)と前記スリットとスリットとの間の幅(B)との関係が1.0A≦B≦3.0Aとしたことを特徴とする鉛蓄電池の製造法。A plurality of slits parallel to each other are intermittently formed in a zigzag shape along the longitudinal direction of the lead alloy sheet , and the linear portions formed by the slits adjacent to each other in parallel are front and back from the lead alloy sheet surface. In a method of manufacturing a lead storage battery using a mesh portion formed by expanding and expanding the lead alloy sheet in the width direction after plastic deformation so as to protrude alternately in both directions in a convex shape, the lead alloy is tin Of 0.6 to 2.0% by weight, and the relationship between the width (A) of the linear portion and the width (B) between the slits is 1.0A ≦ B ≦ 3.0A A method for producing a lead-acid battery, characterized by
JP15907299A 1999-06-07 1999-06-07 Lead acid battery and manufacturing method thereof Expired - Lifetime JP4062817B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP15907299A JP4062817B2 (en) 1999-06-07 1999-06-07 Lead acid battery and manufacturing method thereof

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP15907299A JP4062817B2 (en) 1999-06-07 1999-06-07 Lead acid battery and manufacturing method thereof

Publications (2)

Publication Number Publication Date
JP2000348734A JP2000348734A (en) 2000-12-15
JP4062817B2 true JP4062817B2 (en) 2008-03-19

Family

ID=15685615

Family Applications (1)

Application Number Title Priority Date Filing Date
JP15907299A Expired - Lifetime JP4062817B2 (en) 1999-06-07 1999-06-07 Lead acid battery and manufacturing method thereof

Country Status (1)

Country Link
JP (1) JP4062817B2 (en)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4834912B2 (en) * 2001-03-01 2011-12-14 パナソニック株式会社 Manufacturing method of storage battery grid and manufacturing method of lead storage battery using storage battery grid manufactured by the manufacturing method
JP4904632B2 (en) * 2001-04-11 2012-03-28 パナソニック株式会社 Lead acid battery
US20030082455A1 (en) 2001-06-22 2003-05-01 Japan Storage Battery Co., Ltd. Grid for a battery plate, method of producing the same, and battery using the same
CN100517819C (en) 2001-11-21 2009-07-22 株式会社杰士汤浅 Accumulator and producing method thereof
JP2003234105A (en) * 2001-12-03 2003-08-22 Japan Storage Battery Co Ltd Storage battery
US20030121131A1 (en) * 2001-12-03 2003-07-03 Japan Storage Battery Co., Ltd. Apparatus for producing a grid for a battery plate, and method of producing the same

Also Published As

Publication number Publication date
JP2000348734A (en) 2000-12-15

Similar Documents

Publication Publication Date Title
US6833218B2 (en) Direct cast lead alloy strip for expanded metal battery plate grids
JP4288730B2 (en) Lead storage battery manufacturing method and lead storage battery grid manufacturing apparatus
JP4062817B2 (en) Lead acid battery and manufacturing method thereof
JP4929558B2 (en) Method for manufacturing lead-acid battery grid
JP4239303B2 (en) Lead acid battery
JP4686810B2 (en) Lead acid battery
JP4834912B2 (en) Manufacturing method of storage battery grid and manufacturing method of lead storage battery using storage battery grid manufactured by the manufacturing method
JP4385441B2 (en) Lead acid battery
JP4092816B2 (en) Lattice body for lead acid battery and method for manufacturing the same
JP4923485B2 (en) Expanded grid for lead-acid battery and lead-acid battery using the expanded grid
JP4006888B2 (en) Manufacturing method of lead acid battery
JP4899239B2 (en) Method for producing expanded mesh sheet and method for producing lead-acid battery grid
JP4385557B2 (en) Expanded grid for battery and lead-acid battery using the same
JP4380184B2 (en) Storage battery grid and lead storage battery using the same
JP4069674B2 (en) Manufacturing method of expanded grid for lead-acid battery
JP4203634B2 (en) Manufacturing method of lead acid battery
JP4876328B2 (en) Battery grid manufacturing equipment for storage batteries
JPH01204364A (en) Expanded grid for lead-acid battery and its manufacture
JP4894105B2 (en) Lead acid battery
JP4904632B2 (en) Lead acid battery
JP3339109B2 (en) Method of manufacturing expanded grid for lead-acid battery
JP2004063313A (en) Manufacturing method of expanded meshes of net for battery current collector
JP2002075380A (en) Expand grid body for lead-acid battery
JP2004146179A (en) Lead acid storage battery
JPH11339812A (en) Lead-acid battery

Legal Events

Date Code Title Description
A621 Written request for application examination

Free format text: JAPANESE INTERMEDIATE CODE: A621

Effective date: 20040311

RD01 Notification of change of attorney

Free format text: JAPANESE INTERMEDIATE CODE: A7421

Effective date: 20050629

A977 Report on retrieval

Free format text: JAPANESE INTERMEDIATE CODE: A971007

Effective date: 20060719

A131 Notification of reasons for refusal

Free format text: JAPANESE INTERMEDIATE CODE: A131

Effective date: 20060801

A521 Written amendment

Free format text: JAPANESE INTERMEDIATE CODE: A523

Effective date: 20060830

TRDD Decision of grant or rejection written
A01 Written decision to grant a patent or to grant a registration (utility model)

Free format text: JAPANESE INTERMEDIATE CODE: A01

Effective date: 20071211

A61 First payment of annual fees (during grant procedure)

Free format text: JAPANESE INTERMEDIATE CODE: A61

Effective date: 20071224

R151 Written notification of patent or utility model registration

Ref document number: 4062817

Country of ref document: JP

Free format text: JAPANESE INTERMEDIATE CODE: R151

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20110111

Year of fee payment: 3

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20110111

Year of fee payment: 3

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20120111

Year of fee payment: 4

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20130111

Year of fee payment: 5

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20130111

Year of fee payment: 5

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20140111

Year of fee payment: 6

S533 Written request for registration of change of name

Free format text: JAPANESE INTERMEDIATE CODE: R313533

R350 Written notification of registration of transfer

Free format text: JAPANESE INTERMEDIATE CODE: R350

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

S111 Request for change of ownership or part of ownership

Free format text: JAPANESE INTERMEDIATE CODE: R313113

R360 Written notification for declining of transfer of rights

Free format text: JAPANESE INTERMEDIATE CODE: R360

R360 Written notification for declining of transfer of rights

Free format text: JAPANESE INTERMEDIATE CODE: R360

R371 Transfer withdrawn

Free format text: JAPANESE INTERMEDIATE CODE: R371

S111 Request for change of ownership or part of ownership

Free format text: JAPANESE INTERMEDIATE CODE: R313113

R350 Written notification of registration of transfer

Free format text: JAPANESE INTERMEDIATE CODE: R350

EXPY Cancellation because of completion of term