JP2006309983A - Lead-acid battery - Google Patents
Lead-acid battery Download PDFInfo
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- JP2006309983A JP2006309983A JP2005128444A JP2005128444A JP2006309983A JP 2006309983 A JP2006309983 A JP 2006309983A JP 2005128444 A JP2005128444 A JP 2005128444A JP 2005128444 A JP2005128444 A JP 2005128444A JP 2006309983 A JP2006309983 A JP 2006309983A
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- 239000002253 acid Substances 0.000 title claims abstract description 11
- 229910052751 metal Inorganic materials 0.000 claims abstract description 32
- 239000002184 metal Substances 0.000 claims abstract description 32
- 229910000978 Pb alloy Inorganic materials 0.000 claims abstract description 29
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims abstract description 9
- 229910052802 copper Inorganic materials 0.000 claims abstract description 9
- 239000010949 copper Substances 0.000 claims abstract description 9
- 229910045601 alloy Inorganic materials 0.000 claims abstract description 6
- 239000000956 alloy Substances 0.000 claims abstract description 6
- 229910052782 aluminium Inorganic materials 0.000 claims abstract description 6
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims abstract description 6
- 229910052797 bismuth Inorganic materials 0.000 claims abstract description 6
- 229910052738 indium Inorganic materials 0.000 claims abstract description 6
- 229910000881 Cu alloy Inorganic materials 0.000 claims abstract description 5
- 229910052787 antimony Inorganic materials 0.000 claims abstract description 5
- 229910052785 arsenic Inorganic materials 0.000 claims abstract description 5
- 229910052759 nickel Inorganic materials 0.000 claims abstract description 5
- 229910052711 selenium Inorganic materials 0.000 claims abstract description 5
- 229910052709 silver Inorganic materials 0.000 claims abstract description 5
- 229910052714 tellurium Inorganic materials 0.000 claims abstract description 5
- 229910052725 zinc Inorganic materials 0.000 claims abstract description 5
- 239000011247 coating layer Substances 0.000 claims description 74
- 229910000838 Al alloy Inorganic materials 0.000 abstract description 4
- 239000006185 dispersion Substances 0.000 abstract 1
- 230000002708 enhancing effect Effects 0.000 abstract 1
- 230000000052 comparative effect Effects 0.000 description 15
- 239000010410 layer Substances 0.000 description 9
- 238000000034 method Methods 0.000 description 7
- 238000003860 storage Methods 0.000 description 7
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 6
- 238000007598 dipping method Methods 0.000 description 6
- 239000011248 coating agent Substances 0.000 description 5
- 238000000576 coating method Methods 0.000 description 5
- 230000007547 defect Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000009713 electroplating Methods 0.000 description 3
- 238000007747 plating Methods 0.000 description 3
- 229910016334 Bi—In Inorganic materials 0.000 description 2
- 238000005266 casting Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 229910001316 Ag alloy Inorganic materials 0.000 description 1
- 229910001152 Bi alloy Inorganic materials 0.000 description 1
- 229910001369 Brass Inorganic materials 0.000 description 1
- 229910017784 Sb In Inorganic materials 0.000 description 1
- 229910017838 Sb—In Inorganic materials 0.000 description 1
- 229910001370 Se alloy Inorganic materials 0.000 description 1
- 230000002159 abnormal effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000010951 brass Substances 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000005868 electrolysis reaction Methods 0.000 description 1
- 239000008151 electrolyte solution Substances 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 238000007654 immersion Methods 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- 229910021645 metal ion Inorganic materials 0.000 description 1
- 229910000679 solder Inorganic materials 0.000 description 1
- 238000004381 surface treatment Methods 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
Landscapes
- Connection Of Batteries Or Terminals (AREA)
Abstract
Description
本発明は鉛蓄電池、特に鉛または鉛合金より電気抵抗の低い金属から成る極柱端子の少なくとも基部の表面に被覆層を設け、該基部を鉛合金で鋳込んだ極柱を備える鉛蓄電池であって、極柱の内部抵抗の低減および極柱端子のトルク値の向上を図った鉛蓄電池に関するものである。 The present invention is a lead storage battery, particularly a lead storage battery comprising a pole column in which a coating layer is provided on the surface of at least the base of a pole terminal made of a metal having a lower electrical resistance than lead or a lead alloy, and the base is cast with a lead alloy. The present invention relates to a lead-acid battery in which the internal resistance of the pole pole is reduced and the torque value of the pole pole terminal is improved.
鉛蓄電池は、鉛合金製の極柱を電槽の蓋部から突出させ、該突出した極柱端子に接続具を取り付けて外部機器に接続するようにしたものがある。しかし、鉛合金製の極柱は硬度が低いため、接続具を繰り返し着脱すると、変形して接続を行うことが出来なくなる恐れがあった。また、鉛蓄電池は、各種非常用電源、通信用電源のバックアップに広く使用されており、要求される放電特性も小電流から大電流とさまざまである。特に大電流を放出する高出力の鉛蓄電池においては、極柱の内部抵抗が高いと大電流を取り出せないため、市場の要求を満足するものとならない恐れがあった。 Some lead-acid batteries have a lead alloy pole column protruding from the lid of the battery case, and a connector is attached to the protruding pole column terminal to connect to an external device. However, since the pole column made of a lead alloy has low hardness, there is a possibility that the connection cannot be performed due to deformation when the connector is repeatedly attached and detached. Lead storage batteries are widely used for backup of various emergency power supplies and communication power supplies, and the required discharge characteristics vary from small currents to large currents. In particular, in a high-power lead-acid battery that discharges a large current, if the internal resistance of the pole pole is high, a large current cannot be taken out, so that there is a possibility that it will not satisfy market demands.
そこで、該極柱に鉛合金より硬度が高く電気抵抗の低い真鍮や銅を主成分とした端子ボルトや端子ナットの基部を鋳込んだものが製造される場合がある。鋳込む端子ボルト若しくは端子ナットの表面処理として、鉛被覆若しくは半田被覆等が用いられている。 Therefore, there may be a case in which a terminal bolt or a terminal nut base made mainly of brass or copper having a hardness higher than that of a lead alloy and a lower electrical resistance is cast on the pole column. As a surface treatment of a terminal bolt or a terminal nut to be cast, lead coating or solder coating is used.
例えば、銅を主成分とした端子ボルト若しくは端子ナットの基部が、鉛を主成分とする極柱に鋳込まれる場合で、この埋め込み基部の表面に鉛メッキ層を介して錫メッキ層を施すことにより、該端子ボルト若しくは端子ナットと極柱との密着性の向上を図り、鉛蓄電池用極柱の通電性の向上を図ること（特許文献１）が知られている。 For example, when the base of a terminal bolt or terminal nut mainly composed of copper is cast into a pole column composed mainly of lead, a tin plating layer is applied to the surface of the embedded base via a lead plating layer. Thus, it is known that the adhesion between the terminal bolt or terminal nut and the pole column is improved to improve the electrical conductivity of the lead-acid battery pole column (Patent Document 1).
しかしながら、特許文献１の方法は端子ボルト若しくは端子ナットと極柱との密着性の向上を図り、鉛蓄電池用極柱の通電性の向上を図ることでの成果は認められるが、端子ボルト若しくは端子ナットの表面に鉛被覆層施した後に錫被覆層を形成しているため、被覆作業を行う回数が２回となり被覆層を形成する手間がかかっていた。 However, although the method of Patent Document 1 is intended to improve the adhesion between the terminal bolt or terminal nut and the pole column and to improve the conductivity of the lead column for the lead-acid battery, the results are recognized. Since the tin coating layer is formed after the lead coating layer is applied to the surface of the nut, the number of times of performing the coating operation is two times, and it takes time and effort to form the coating layer.
このような背景の下、被覆回数を１回とし、且つ、極柱の内部抵抗不良の低減、内部抵抗のバラツキの抑制が可能で、また平均締め付けトルク値も向上する鉛蓄電池を提供することが望まれている。 Under such a background, a lead-acid battery that can be coated once, can reduce the internal resistance failure of the pole pole, can suppress variations in internal resistance, and can improve the average tightening torque value is provided. It is desired.
本発明は、極柱端子が鉛または鉛合金より電気抵抗の低い金属から成り、該極柱端子の基部が鉛合金で鋳込まれた極柱を備える鉛蓄電池において、該極柱端子は銅、銅合金、アルミニウム、アルミニウム合金の何れかから形成されており、該極柱端子の少なくとも基部の表面にはＡｓ、Ａｇ、Ｂｉ、Ｉｎ、Ｎｉ、Ｓｂ、Ｓｅ、Ｔｅ、Ｚｎの１種類またはこれらの合金からなる厚さ１０〜１００μｍの被覆層を設けたことを特徴としたものである。 The present invention relates to a lead-acid battery comprising a pole pole terminal made of a metal having a lower electrical resistance than lead or a lead alloy, and a base pole of the pole pole terminal cast from a lead alloy, wherein the pole pole terminal is copper, It is formed from any one of copper alloy, aluminum, and aluminum alloy, and at least the base surface of the pole terminal has one kind of As, Ag, Bi, In, Ni, Sb, Se, Te, Zn or these A coating layer made of an alloy and having a thickness of 10 to 100 μm is provided.
本発明は、鉛または鉛合金より電気抵抗の低い金属として銅、銅合金、アルミニウム、アルミニウム合金を用いた場合にその被覆層としてＡｓ、Ａｇ、Ｂｉ、Ｉｎ、Ｎｉ、Ｓｂ、Ｓｅ、Ｔｅ、Ｚｎの少なくとも１種類からなる金属を用いることで製法容易にして優れた特性が得られることを見出したものである。 In the present invention, when copper, copper alloy, aluminum, or aluminum alloy is used as a metal having lower electric resistance than lead or a lead alloy, As, Ag, Bi, In, Ni, Sb, Se, Te, Zn are used as the coating layer. It has been found that the use of at least one kind of metal facilitates the production process and provides excellent characteristics.
本発明において、極柱端子の少なくとも基部の表面に設ける被覆層の厚みを１０〜１００μｍとすることが適当であり、被覆層の厚みが１０μｍより薄い場合は被覆層が剥がれ易くなり密着性が低下する。逆に被覆層の厚みが１００μｍより厚い場合は内部抵抗が増加し抵抗不良による抵抗値のバラツキが増大し、また、被覆層を厚く形成することはコストアップにも繋がる。 In the present invention, it is appropriate that the thickness of the coating layer provided on at least the surface of the base of the pole terminal is 10 to 100 μm. When the thickness of the coating layer is less than 10 μm, the coating layer is easily peeled off and the adhesion is reduced. To do. On the other hand, when the thickness of the coating layer is greater than 100 μm, the internal resistance increases, the resistance value varies due to poor resistance, and the formation of a thick coating layer leads to an increase in cost.
本発明による鉛蓄電池の極柱を用いることにより、製法容易にして極柱の内部抵抗のバラツキが抑制でき内部抵抗不良を低減することが可能となり、大電流を取り出せる鉛蓄電池を提供することができる。また、平均締め付けトルク値も向上するので締め付けた時の安全も確保できる。 By using the lead column of the lead storage battery according to the present invention, it is possible to provide a lead storage battery that can easily manufacture and suppress variations in the internal resistance of the pole column, reduce internal resistance defects, and extract a large current. . Moreover, since the average tightening torque value is also improved, safety when tightening can be secured.
本発明の実施の形態を、図１により説明する。なお、本発明の極柱端子は正・負両極に用いることが可能である。 An embodiment of the present invention will be described with reference to FIG. The pole terminal of the present invention can be used for both positive and negative poles.
図１は、本発明の実施形態を一部切欠した要部部分断面図である。本発明による鉛蓄電池は、極柱端子２に厚さ１０〜１００μｍの被覆層２３を形成し、鉛合金で鋳込んだものである。１は鉛または鉛合金で形成された極柱、１１は極柱と一体形成された座部で、図示しないが同極柱の いた板と接続されているストラップ部と接続される。２は鉛または鉛合金より電気抵抗の低い金属から成る極柱端子、２１は極柱端子２が鉛合金で鋳込まれる埋め込み基部、２２は極柱端子２が鉛合金で鋳込まれない突出部、２３は極柱端子の表面に設けられた被覆層、２４は極柱端子の頂面中央部に開口した凹部である。極柱端子２は鉛合金で鋳込まれる埋め込み基部２１と、鉛合金で鋳込まれない突出部２２で構成され、埋め込み基部と突出部は一体形成された円柱形状である。該極柱端子の頂面中央の内面に開口した凹部２４を有し、該凹部２４は接続金具と螺着可能な螺子溝を形成している。 FIG. 1 is a partial cross-sectional view of a main part in which an embodiment of the present invention is partially cut away. The lead storage battery according to the present invention is formed by forming a coating layer 23 having a thickness of 10 to 100 μm on the pole terminal 2 and casting it with a lead alloy. Reference numeral 1 denotes a pole column made of lead or a lead alloy, and 11 denotes a seat portion formed integrally with the pole column, which is connected to a strap portion connected to a plate having the same pole column (not shown). 2 is a pole terminal made of a metal having a lower electrical resistance than lead or lead alloy, 21 is a buried base portion in which the pole column terminal 2 is cast with lead alloy, and 22 is a protruding portion where the pole column terminal 2 is not cast with lead alloy. , 23 is a coating layer provided on the surface of the pole terminal, and 24 is a recess opened at the center of the top surface of the pole terminal. The pole terminal 2 is composed of an embedded base 21 cast from a lead alloy and a protrusion 22 that is not cast from a lead alloy. The embedded base and the protrusion have a cylindrical shape formed integrally. A recess 24 is formed in the inner surface at the center of the top surface of the pole terminal, and the recess 24 forms a screw groove that can be screwed to the connection fitting.
極柱端子２は、鉛または鉛合金より電気抵抗の低い金属である銅、銅合金、アルミニウム、アルミニウム合金の何れかから形成され、該極柱端子２の埋め込み基部２１の全表面および突出部２２の一部の表面に、Ａｓ、Ａｇ、Ｂｉ、Ｉｎ、Ｎｉ、Ｓｂ、Ｓｅ、Ｔｅ、Ｚｎの１種類またはこれらの合金からなる被覆層２３を形成する。被覆層２３は溶融メッキ法により形成され、その後、鋳型を用いて鉛合金で鋳込む。なお、これら被覆層２３を形成する金属は、被覆層２３形成後に鉛合金で鋳込むため、鉛合金とぬれ性の良い金属を用いることが好ましい。 The pole terminal 2 is formed of any one of copper, copper alloy, aluminum, and aluminum alloy, which is a metal having a lower electrical resistance than lead or a lead alloy, and the entire surface of the embedded base 21 of the pole terminal 2 and the protrusion 22. A coating layer 23 made of one kind of As, Ag, Bi, In, Ni, Sb, Se, Te, Zn or an alloy thereof is formed on a part of the surface. The coating layer 23 is formed by a hot dipping method, and then cast with a lead alloy using a mold. In addition, since the metal which forms these coating layers 23 is cast with a lead alloy after forming the coating layer 23, it is preferable to use a metal having good wettability with a lead alloy.
本発明で被覆層形成に使用した溶融メッキ法とは、極柱端子を溶融金属中に浸漬して引き上げ、溶融金属を極柱端子表面で凝固させ金属被覆を形成する方法である。他のメッキ方法として電気メッキ法が挙げられ、被覆しようとする金属のイオンを含む電解液中で極柱端子をカソードとし、電着させようとする金属と同じ金属か、または不溶性の金属をアノードとして直流電解を行い極柱端子表面に金属イオンを放電析出させて被覆層を形成する方法である。なお、溶融メッキ法は、電気メッキ法に比し層の形成が容易であり、また、密着性・耐食性を向上させる効果がある。 The hot dipping method used for forming the coating layer in the present invention is a method of forming a metal coating by dipping the pole column terminal in the molten metal and pulling it up to solidify the molten metal on the surface of the pole column terminal. Another plating method is an electroplating method. In the electrolytic solution containing ions of the metal to be coated, the pole terminal is used as a cathode, and the same metal as the metal to be electrodeposited or an insoluble metal is used as an anode. As described above, direct current electrolysis is performed to discharge and deposit metal ions on the surface of the pole column terminal to form a coating layer. Note that the hot dipping method is easier to form a layer than the electroplating method, and has the effect of improving adhesion and corrosion resistance.
銅を主成分とする極柱端子を用い、該極柱端子は円柱形状であって、その頂面中央部に開口した凹部を有する。また、該極柱端子は鉛合金で鋳込まれる埋め込み基部と、鉛合金で鋳込まれない突出部から成り、埋め込み基部の全表面と突出部の一部の表面に被覆層を設ける。被覆層の形成は溶融メッキ法を用い、溶融したＢｉ中に極柱端子の基部および突出部の半分まで浸漬し、表面に厚さ１０μｍの被覆層を形成した。その後、公知の方法によって極柱端子の基部を鋳型を用いて溶融した溶融鉛に鋳込み、円柱形の極柱を作製し、平板状の座部を一体形成した（本発明品１）。同様の方法で、極柱端子の表面に形成する被覆層の厚さを３０μｍとしたものを本発明品２、極柱端子の表面に形成する被覆層の厚さを５０μｍとしたものを本発明品３、極柱端子の表面に形成する被覆層の厚さを７０μｍとしたものを本発明品４、極柱端子の表面に形成する被覆層の厚さを９０μｍとしたものを本発明品５、極柱端子の表面に形成する被覆層の厚さを１００μｍとしたものを本発明品６、極柱端子の表面に形成する被覆層の厚さを５μｍとしたものを比較例１、極柱端子の表面に形成する被覆層の厚さを１２０μｍとしたものを比較例２としそれぞれ極柱を作製した。極柱表面に形成する被覆層の厚さは浸漬回数を変えることによって変化させた。 A pole pole terminal mainly composed of copper is used, and the pole pole terminal has a cylindrical shape and has a concave portion opened at the center of the top surface. The pole terminal is composed of a buried base cast from a lead alloy and a protrusion not cast from lead alloy, and a coating layer is provided on the entire surface of the buried base and a part of the protrusion. The coating layer was formed by using a hot dipping method and immersed in molten Bi up to half of the base portion and the protruding portion of the pole column terminal to form a coating layer having a thickness of 10 μm on the surface. Thereafter, the base portion of the pole pole terminal was cast into molten lead melted using a mold by a known method to produce a cylindrical pole pole, and a flat seat portion was integrally formed (Product 1 of the present invention). In the same manner, the product 2 in which the thickness of the coating layer formed on the surface of the pole column terminal is 30 μm and the product 2 in which the thickness of the coating layer formed on the surface of the pole column terminal is 50 μm are disclosed. Product 3, a product with a thickness of 70 μm on the surface of the pole column terminal is the present invention product 4, and a product with the thickness of the coating layer formed on the surface of the pole column terminal is 90 μm with the present product 5 The product 6 in which the thickness of the coating layer formed on the surface of the pole column terminal is 100 μm, the comparative product 1 in which the thickness of the coating layer formed on the surface of the pole column terminal is 5 μm. A pole column was prepared for each of Comparative Examples 2 in which the thickness of the coating layer formed on the surface of the terminal was 120 μm. The thickness of the coating layer formed on the surface of the pole column was changed by changing the number of immersions.
なお、本発明の被覆層の形成は溶融メッキ法を用いたが、電気メッキ法を用いた場合、通電電気量により極柱表面に形成する被覆層の厚さを変化させる。 The coating layer of the present invention is formed by the hot dipping method. However, when the electroplating method is used, the thickness of the coating layer formed on the surface of the pole column is changed by the amount of electricity applied.
被覆層を形成する金属をＩｎとした以外は実施例１と同様にして極柱端子の表面に被覆層を形成して厚さの異なる種種の極柱（本発明品１〜６、比較例１〜２）を形成した。 Except that In was used as the metal for forming the coating layer, various types of polar columns having different thicknesses were formed in the same manner as in Example 1 (Products 1 to 6 of the present invention, Comparative Example 1). ~ 2) was formed.
被覆層を形成する金属をＳｅとした以外は実施例１と同様にして極柱端子の表面に被覆層を形成して厚さの異なる種種の極柱（本発明品１〜６、比較例１〜２）を形成した。 Except that Se was used as the metal for forming the coating layer, various types of polar columns having different thicknesses were formed in the same manner as in Example 1 (Products 1 to 6 of the present invention, Comparative Example 1). ~ 2) was formed.
被覆層を形成する金属をＴｅとした以外は実施例１と同様にして極柱端子の表面に被覆層を形成して厚さの異なる種種の極柱（本発明品１〜６、比較例１〜２）を形成した。 Except that Te was used as the metal for forming the coating layer, various types of polar columns having different thicknesses were formed in the same manner as in Example 1 (the products 1 to 6 of the present invention, Comparative Example 1). ~ 2) was formed.
被覆層を形成する金属をＺｎとした以外は実施例１と同様にして極柱端子の表面に被覆層を形成して厚さの異なる種種の極柱（本発明品１〜６、比較例１〜２）を形成した。 Except that Zn was used as the metal for forming the coating layer, various types of polar columns having different thicknesses were formed in the same manner as in Example 1 (the products 1 to 6 of the present invention, Comparative Example 1). ~ 2) was formed.
被覆層を形成する金属をＳｂ−Ｂｉ合金とした以外は実施例１と同様にして極柱端子の表面に被覆層を形成して厚さの異なる種種の極柱（本発明品１〜６、比較例１〜２）を形成した。 Except that the metal for forming the coating layer was an Sb-Bi alloy, a coating layer was formed on the surface of the pole column terminal in the same manner as in Example 1, and various types of pole columns having different thicknesses (invention products 1 to 6, Comparative Examples 1-2) were formed.
被覆層を形成する金属をＳｂ−Ｉｎ合金とした以外は実施例１と同様にして極柱端子の表面に被覆層を形成して厚さの異なる種種の極柱（本発明品１〜６、比較例１〜２）を形成した。 Except that the metal for forming the coating layer was an Sb-In alloy, various types of polar columns (invention products 1 to 6, Comparative Examples 1-2) were formed.
被覆層を形成する金属をＢｉ−Ｉｎ合金とした以外は実施例１と同様にして極柱端子の表面に被覆層を形成して厚さの異なる種種の極柱（本発明品１〜６、比較例１〜２）を形成した。 Except that the metal for forming the coating layer was a Bi-In alloy, various types of polar columns having different thicknesses were formed in the same manner as in Example 1 (inventive products 1 to 6, Comparative Examples 1-2) were formed.
被覆層を形成する金属をＡｓ−Ｓｅ合金とした以外は実施例１と同様にして極柱端子の表面に被覆層を形成して厚さの異なる種種の極柱（本発明品１〜６、比較例１〜２）を形成した。 Except that the metal for forming the coating layer was an As-Se alloy, various types of polar columns having different thicknesses were formed in the same manner as in Example 1 (invention products 1 to 6, Comparative Examples 1-2) were formed.
被覆層を形成する金属をＮｉ−Ａｇ合金とした以外は実施例１と同様にして極柱端子の表面に被覆層を形成して厚さの異なる種種の極柱（本発明品１〜６、比較例１〜２）を形成した。 Except for the Ni-Ag alloy used as the metal for forming the coating layer, various types of pole columns having different thicknesses were formed in the same manner as in Example 1 (the present invention products 1-6, Comparative Examples 1-2) were formed.
（従来例）
極柱端子に被覆層を形成しない以外は実施例１と同様にして極柱を作製した（従来例１）。被覆層を形成する金属を鉛とし、極柱端子の表面に形成する被覆層の厚さを５０μｍとした以外は実施例１と同様に極柱を作製した（従来例２）。被覆層を形成する金属を鉛と鈴とし、鉛被覆層の上面に錫被覆層を形成して２層とし、各被覆層の厚さを鉛被覆層は２５μｍ、錫被覆層は２５μｍとしてその合計を５０μｍとした以外は実施例１と同様に極柱を作製した（従来例３）。
(Conventional example)
A pole pole was produced in the same manner as in Example 1 except that no coating layer was formed on the pole pole terminal (Conventional Example 1). A pole column was produced in the same manner as in Example 1 except that the metal forming the coating layer was lead and the thickness of the coating layer formed on the surface of the pole column terminal was 50 μm (Conventional Example 2). The metal forming the coating layer is lead and bell, the tin coating layer is formed on the upper surface of the lead coating layer to form two layers, and the total thickness of each coating layer is 25 μm for the lead coating layer and 25 μm for the tin coating layer. A pole column was produced in the same manner as in Example 1 except that the thickness was changed to 50 μm (Conventional Example 3).
表１は被覆層をＢｉとし、それぞれの極柱（本発明品１〜６、比較品１、２）を作製して、そのときの抵抗不良数、抵抗値のバラツキ、従来品を１００とした時の平均締め付けトルク値を測定した結果に示す。同様に、表２に被覆層をＩｎ、表３に被覆層をＳｅ、表４に被覆層をＴｅ、表５に被覆層をＺｎ、表６に被覆層をＳｅ−Ｂｉ、表７に被覆層をＳｅ−Ｉｎ、表８に被覆層をＢｉ−Ｉｎ、表９に被覆層をＡｓ−Ｓｅ、表１０に被覆層をＮｉ−Ａｇとしたときのそれぞれの極柱（本発明品１〜６、比較品１、２）および表１１に従来例１〜３の極柱を作製して、そのときの抵抗不良数、抵抗値のバラツキ、従来品を１００とした時の平均締め付けトルク値を測定した結果に示す。なお、極柱はそれぞれ１００個ずつ作製し評価を行った。 Table 1 shows that the coating layer is Bi, and each pole column (invention products 1 to 6, comparative products 1 and 2) is prepared. The number of resistance defects, the variation in resistance value, and the conventional product is 100. It shows in the result of measuring the average tightening torque value at the time. Similarly, Table 2 shows the coating layer In, Table 3 shows the coating layer Se, Table 4 shows the coating layer Te, Table 5 shows the coating layer Zn, Table 6 shows the coating layer Se-Bi, and Table 7 shows the coating layer. Of each of the pole poles of the present invention 1-6, the coating layer is Bi-In, Table 9 is As-Se, and Table 10 is Ni-Ag. Comparative poles 1 and 2) and Table 11 were prepared as poles of conventional examples 1 to 3, and the number of resistance failures at that time, variation in resistance value, and average tightening torque value when the conventional product was set to 100 were measured. Shown in the results. In addition, 100 poles were produced for each evaluation.
なお、内部抵抗測定は交流内部抵抗測定器を用い極柱の上面と下面間の抵抗を測定した。ここで抵抗不良数とは、内部抵抗測定において接合不良等による抵抗値に異常がでた個数である。また、抵抗値のバラツキは、極柱の上面と下面間の抵抗を測定したときの３σを示したものである。また、平均締め付けトルク値の測定は、極柱端子を鉛合金で鋳込んで極柱とした後、該極柱を固定し極柱端子の頂面中央部に開口した凹部に市販のトルクレンチによりボルトを螺合してどの程度のトルクで極柱端子が回動するかを測定することで行った。
In addition, internal resistance measurement measured the resistance between the upper surface and lower surface of a pole pole using the alternating current internal resistance measuring device. Here, the number of resistance failures is the number of abnormal resistance values due to bonding failure or the like in internal resistance measurement. Further, the variation in resistance value represents 3σ when the resistance between the upper surface and the lower surface of the pole column is measured. Also, the average tightening torque value is measured by casting a pole pole terminal with a lead alloy to form a pole pole, and then fixing the pole pole and using a commercially available torque wrench in a recess opened at the center of the top surface of the pole pole terminal. The bolts were screwed together to measure how much torque the pole terminal rotates.
表１〜１０に示すように、本発明品１〜６において、ＢｉやＩｎ等どの金属を用いた場合においても、表１１に示す極柱端子に被覆層を設けない従来例１および被覆層を鉛とした従来例２に比し抵抗不良数やバラツキ、平均締め付けトルク値が向上していることが分かる。これは、被覆層に鉛合金と合金化しやすい金属を使用することで極柱端子と鉛合金との界面での接合が促進され密着性が改善されたことによるものである。また、比較例１に示すように被覆層の厚さを１０μｍ以下とした場合、一部被覆層の剥離が確認され、密着性の低下に繋がり平均締め付けトクルク値等の低下に繋がった。比較例２に示すように被覆層の厚さを１００μｍ以上とした場合、内部抵抗が増加し抵抗不良による抵抗値のバラツキが増大し、さらに平均締め付けトルク値の低下に繋がった。また、鉛被覆層を形成した後、錫被覆層を形成した従来例３のように被覆層を２層形成した場合と同等な抵抗不良数やバラツキ、平均締め付けトルク値が得られ、被覆層が１層において十分効果があることが確認できた。 As shown in Tables 1 to 10, in the products 1 to 6 of the present invention, when any metal such as Bi or In is used, the conventional example 1 and the coating layer in which the coating layer is not provided on the pole terminal shown in Table 11 It can be seen that the number of resistance defects, variation, and average tightening torque value are improved as compared with the conventional example 2 in which lead is used. This is because the use of a metal that is easily alloyed with a lead alloy in the coating layer promotes the bonding at the interface between the pole column terminal and the lead alloy and improves the adhesion. Moreover, as shown in Comparative Example 1, when the thickness of the coating layer was 10 μm or less, peeling of the coating layer was partially confirmed, leading to a decrease in adhesion and a decrease in average tightening torque value and the like. As shown in Comparative Example 2, when the thickness of the coating layer was set to 100 μm or more, the internal resistance increased, the resistance value varied due to the resistance failure, and the average tightening torque value decreased. In addition, after forming the lead coating layer, the same number of resistance failures, variations, and average tightening torque values as in the case of forming the two coating layers as in the conventional example 3 in which the tin coating layer is formed are obtained. It was confirmed that there was a sufficient effect in one layer.
なお、極柱端子の表面に形成する被覆層を埋め込み基部のみや極柱端子の全周にそれぞれの金属を被覆した場合や極柱端子に銅に替えてアルミニウムを主成分としたものを同様に被覆した場合に於いても同様の効果が得られる。 In addition, when the covering layer formed on the surface of the pole column terminal is embedded only on the base or the entire circumference of the pole column terminal is coated with the respective metal, or the pole column terminal in which the main component is aluminum instead of copper. The same effect can be obtained even in the case of coating.
以上の結果より、極柱端子に形成する被覆層を鉛または鉛合金とするのでは十分な密着性が得られず、また鉛被覆層形成後に錫被覆層を形成するなどのように被覆層を２層を形成しなくても、本発明で使用した金属を使用することで１層で被覆層を２層形成した場合と同等の密着性を得ることができる。また、被覆層の厚さを１０〜１００μｍとすることで内部抵抗のバラツキが少なく、平均締め付けトルク値の高い鉛蓄電池を提供することができる。 From the above results, sufficient adhesion cannot be obtained if the coating layer formed on the pole terminal is made of lead or a lead alloy, and the coating layer can be formed by forming a tin coating layer after the lead coating layer is formed. Even if two layers are not formed, the same adhesiveness as when two coating layers are formed with one layer can be obtained by using the metal used in the present invention. Further, by setting the thickness of the coating layer to 10 to 100 μm, it is possible to provide a lead storage battery having a small variation in internal resistance and a high average tightening torque value.
１ 極柱
１１ 座部
２ 極柱端子
２１ 埋め込み基部
２２ 突出部
２３ 被覆層
２４ 凹部
DESCRIPTION OF SYMBOLS 1 Polar pole 11 Seat part 2 Polar pole terminal 21 Embedded base 22 Protruding part 23 Covering layer 24 Recessed part
Claims (1)
In a lead-acid battery comprising a pole pole made of a metal having a lower electrical resistance than lead or a lead alloy, and a base of the pole pole terminal cast from a lead alloy, the pole pole terminal is made of copper, copper alloy, aluminum And at least the surface of the base portion of the pole column terminal is made of one kind of As, Ag, Bi, In, Ni, Sb, Se, Te, Zn or a thickness of these alloys. A lead-acid battery comprising a 10 to 100 μm coating layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2005128444A JP2006309983A (en) | 2005-04-26 | 2005-04-26 | Lead-acid battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2005128444A JP2006309983A (en) | 2005-04-26 | 2005-04-26 | Lead-acid battery |
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| Publication Number | Publication Date |
|---|---|
| JP2006309983A true JP2006309983A (en) | 2006-11-09 |
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| Application Number | Title | Priority Date | Filing Date |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103872284A (en) * | 2014-03-31 | 2014-06-18 | 浙江天能电池江苏新能源有限公司 | High-strength copper-core post terminal preparation method and product |
| CN110224104A (en) * | 2018-03-02 | 2019-09-10 | 比亚迪股份有限公司 | The negative terminal of battery, the cover plate assembly of battery, battery and electric car |
-
2005
- 2005-04-26 JP JP2005128444A patent/JP2006309983A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103872284A (en) * | 2014-03-31 | 2014-06-18 | 浙江天能电池江苏新能源有限公司 | High-strength copper-core post terminal preparation method and product |
| CN103872284B (en) * | 2014-03-31 | 2016-08-17 | 浙江天能电池江苏新能源有限公司 | A kind of high intensity copper core electrode post preparation method and product |
| CN110224104A (en) * | 2018-03-02 | 2019-09-10 | 比亚迪股份有限公司 | The negative terminal of battery, the cover plate assembly of battery, battery and electric car |
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