JP2005216804A - Manufacturing method of cylindrical sealed lead-acid battery - Google Patents

Manufacturing method of cylindrical sealed lead-acid battery Download PDF

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JP2005216804A
JP2005216804A JP2004025308A JP2004025308A JP2005216804A JP 2005216804 A JP2005216804 A JP 2005216804A JP 2004025308 A JP2004025308 A JP 2004025308A JP 2004025308 A JP2004025308 A JP 2004025308A JP 2005216804 A JP2005216804 A JP 2005216804A
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electrode plate
sulfuric acid
battery
manufacturing
sealed lead
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JP4645039B2 (en
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Satoshi Minoura
敏 箕浦
Kenichi Maeda
謙一 前田
Nobukazu Tanaka
伸和 田中
Takafumi Kondo
隆文 近藤
Shinsuke Kobayashi
真輔 小林
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Resonac Corp
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Shin Kobe Electric Machinery Co Ltd
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    • 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

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  • Battery Electrode And Active Subsutance (AREA)

Abstract

<P>PROBLEM TO BE SOLVED: To provide a manufacturing method of a lead-acid battery, capable of suppressing short-circuiting during formation. <P>SOLUTION: A group of unformed electrode plates in a wound condition are immersed in a sulfuric acid solution to form them. After that, the group of the formed electrode plates in the wound condition are inserted in a battery case to assemble them. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

本発明は、円筒形密閉式鉛蓄電池の製造方法に関するものである。   The present invention relates to a method for manufacturing a cylindrical sealed lead-acid battery.

円筒形密閉式鉛蓄電池は、薄型・長尺の正極板と負極板を使用すると共に、薄いセパレータを使用することで高出力化が図れる。セパレータを薄くすると、捲回工程での短絡の危険性があると共に、化成中での短絡の危険性がある。捲回工程での短絡の原因は、活物質ペーストの凹凸や異物混入が原因となることが多いが、これについては工程のクリーン度の向上、活物質ペーストを充填した後の平滑化処理で抑制することが可能である。一方、化成中の短絡はデンドライト析出が原因である。   Cylindrical sealed lead-acid batteries use a thin and long positive electrode plate and negative electrode plate, and can achieve high output by using a thin separator. If the separator is made thin, there is a risk of short circuit in the winding process, and there is also a risk of short circuit during formation. The cause of a short circuit in the winding process is often due to unevenness of the active material paste or contamination of foreign matter, but this is suppressed by improving the cleanliness of the process and smoothing after filling the active material paste. Is possible. On the other hand, a short circuit during chemical conversion is caused by dendrite precipitation.

デンドライトの析出を防止するため、電解液に硫酸水素塩を添加することが提案されている（例えば、特許文献１参照。）
特開平０８−１６２１４７号公報 In order to prevent the precipitation of dendrites, it has been proposed to add a hydrogen sulfate salt to the electrolytic solution (see, for example, Patent Document 1).
JP 08-162147 A

しかしながら、セパレータを薄くしていくと、短絡の危険性が大きくなるのが現状である。   However, the current situation is that the risk of a short circuit increases as the separator is made thinner.

鉛蓄電池は、ニッケル水素電池やリチウム電池等と比較して、重量当たり出力或いは容積当たり出力が低いものの、安価であるため、小型で高出力な鉛蓄電池ができれば、その利用価値が増大する可能性がある。   Lead-acid batteries have lower output per weight or volume than nickel-metal hydride batteries, lithium batteries, etc., but are inexpensive, so if a small, high-power lead-acid battery can be produced, its utility value may increase. There is.

本発明の目的は、化成中の短絡を抑制できる鉛蓄電池の製造方法を得ることにある。   The objective of this invention is obtaining the manufacturing method of the lead acid battery which can suppress the short circuit during chemical conversion.

本発明は、正極板と負極板がセパレータを介して捲回された極板群を有する円筒形密閉式鉛蓄電池の製造方法を対象とする。     The present invention is directed to a method for manufacturing a cylindrical sealed lead-acid battery having an electrode plate group in which a positive electrode plate and a negative electrode plate are wound through a separator.

本発明に係る円筒形密閉式鉛蓄電池の製造方法では、未化成の捲回状態の前記極板群を硫酸溶液中に浸漬した状態で化成を行い、その後、電槽内に挿入して組み立てを行うことを特徴とする。   In the method for manufacturing a cylindrical sealed lead-acid battery according to the present invention, the electrode plate group in an unformed wound state is formed by being immersed in a sulfuric acid solution, and then assembled into a battery case. It is characterized by performing.

本発明の円筒形密閉式鉛蓄電池の製造方法では、未化成の捲回状態の極板群を硫酸溶液中に硫酸溶液中に浸漬した状態で化成を行い、その後、電槽内に挿入して組み立てを行うので、過剰な硫酸溶液中に未化成の捲回状態の極板群が浸漬されて化成が行われることになって、硫酸濃度の低下が緩和され、化成中での短絡を抑制することができる。   In the method for producing a cylindrical sealed lead-acid battery according to the present invention, chemical conversion is performed in a state where an unformed wound electrode plate group is immersed in a sulfuric acid solution in a sulfuric acid solution, and then inserted into a battery case. Assembling is performed, so that an unformed wound electrode plate group is immersed in an excessive sulfuric acid solution, and chemical conversion is performed, so that the decrease in sulfuric acid concentration is alleviated and short circuit during chemical conversion is suppressed. be able to.

本発明の円筒形密閉式鉛蓄電池の製造方法を実施するための最良の形態では、未化成の捲回状態の極板群を硫酸溶液中に浸漬した状態で化成を行い、その後、電槽内に挿入して組み立てを行う。   In the best mode for carrying out the cylindrical sealed lead-acid battery manufacturing method of the present invention, chemical conversion is performed in a state in which an unformed wound electrode plate group is immersed in a sulfuric acid solution, and then in a battery case. Insert into and assemble.

このようにすることにより、化成中での短絡が抑制できる理由について以下に説明する。   The reason why a short circuit during chemical conversion can be suppressed by doing in this way will be described below.

円筒形密閉式鉛蓄電池は、薄く、長尺の正極板と負極板をセパレータを介して捲回して作成される。長尺の正極板と負極板を硫酸溶液中で化成した後に捲回すると、化成によって極板が硬化するため、捲回時に短絡が発生する。そのため、ペースト充填後の湿った状態の軟らかい極板の状態で、正極板と負極板をセパレータを介して捲回し、その後に電槽内に捲回状態の極板群を挿入してから、硫酸を注液し、電槽内で化成する。   A cylindrical sealed lead-acid battery is formed by winding a thin, long positive electrode plate and negative electrode plate through a separator. If a long positive electrode plate and a negative electrode plate are formed after being formed in a sulfuric acid solution and then wound, the electrode plate is cured by the formation, so that a short circuit occurs during winding. Therefore, in the state of the wet electrode plate after filling the paste, the positive electrode plate and the negative electrode plate are wound through the separator, and then the wound electrode plate group is inserted into the battery case. Is injected and formed in the battery case.

この場合、化成中のデンドライトの析出による短絡は、次のように考えられる。硫酸を電槽内に注液すると、活物質が硫酸と反応して硫酸鉛になるため、硫酸濃度が低下する。密閉式鉛蓄電池は密閉化反応を成立させるため、硫酸量はセパレータ及び正，負極板が保持可能な量しか注液されないため、硫酸濃度が極めて低い状態になる。その後、化成を行うために通電すると、硫酸鉛から硫酸が放出され、硫酸濃度が上昇する。しかし、硫酸濃度が低下した状態では、硫酸鉛の溶解量が増加するため、セパレータ内に析出することになる。これが原因で、デンドライトの析出を引き起こす。従って、化成中での短絡は、硫酸濃度の著しい低下が原因で引き起こされる。   In this case, the short circuit due to the precipitation of dendrite during chemical conversion is considered as follows. When sulfuric acid is poured into the battery case, the active material reacts with sulfuric acid to become lead sulfate, so that the sulfuric acid concentration decreases. Since the sealed lead-acid battery establishes a sealing reaction, the amount of sulfuric acid is injected only in an amount that can be held by the separator and the positive and negative plates, so that the sulfuric acid concentration becomes extremely low. Thereafter, when energization is performed for chemical conversion, sulfuric acid is released from lead sulfate, and the sulfuric acid concentration increases. However, in a state where the sulfuric acid concentration is lowered, the amount of lead sulfate dissolved increases, so that it precipitates in the separator. This causes dendrite precipitation. Therefore, a short circuit during conversion is caused by a significant decrease in sulfuric acid concentration.

そこで、本発明では、過剰な硫酸溶液中に未化成の捲回状態の極板群を浸漬することで化成を行う。このようにすると、過剰な硫酸溶液中で化成が行われて、硫酸濃度の低下が緩和され、化成中での短絡が抑制される。その後、化成済みの捲回状態の極板群を電槽内に挿入して組み立てを行う。   Therefore, in the present invention, the chemical conversion is performed by immersing the unformed wound electrode group in an excessive sulfuric acid solution. If it does in this way, chemical conversion will be performed in an excess sulfuric acid solution, the fall of sulfuric acid concentration will be eased, and the short circuit during chemical conversion will be controlled. Thereafter, the assembled electrode plate group in a wound state is inserted into the battery case and assembled.

以下、本発明の実施例について説明する。厚さ０．７ｍｍの鉛合金箔を用いて幅８０ｍｍ×長さ６００ｍｍの集電体を打ち抜き格子により作成した。   Examples of the present invention will be described below. Using a lead alloy foil having a thickness of 0.7 mm, a current collector having a width of 80 mm and a length of 600 mm was formed by a punched grid.

次に、この集電体を用いて極板を作成した。正極板は、酸化度７０％の鉛粉と希硫酸とを混練し、活物質ペーストを得て、この活物質ペーストを集電体に充填して形成した。負極板は、酸化度７０％の鉛粉に少量の炭素粉末、リグニン、バリウム化合物を加え、希硫酸と混練し、活物質ペーストを得て、この活物質ペーストを集電体に充填して形成した。   Next, an electrode plate was prepared using this current collector. The positive electrode plate was formed by kneading lead powder having an oxidation degree of 70% and dilute sulfuric acid to obtain an active material paste, and filling the current collector with the active material paste. The negative electrode plate is formed by adding a small amount of carbon powder, lignin and barium compound to lead powder with an oxidation degree of 70%, kneading with dilute sulfuric acid to obtain an active material paste, and filling the current collector with this active material paste did.

次に、これら正極板と負極板をセパレータを介して捲回し、乾燥して未化成の極板群を得た。ここで、セパレータは短絡状況を把握するために厚さ０．４ｍｍの薄いものを使用した。   Next, these positive electrode plate and negative electrode plate were wound through a separator and dried to obtain an unformed electrode plate group. Here, a thin separator having a thickness of 0.4 mm was used in order to grasp the short-circuit state.

従来例として、未化成の捲回状態の極板群を電槽内に挿入した後、上蓋を取り付け、電槽内に硫酸を注液した後、電槽内で化成して鉛蓄電池を作成した。   As a conventional example, after inserting an unformed wound electrode plate group into a battery case, an upper lid was attached, sulfuric acid was injected into the battery case, and then formed in the battery case to create a lead storage battery. .

本発明品として、未化成の捲回状態の極板群を過剰な硫酸溶液中に浸漬した後、化成し、その後、電槽内に挿入して組み立てて鉛蓄電池を作成した。   As a product of the present invention, an unformed wound electrode plate group was immersed in an excessive sulfuric acid solution, then formed, and then inserted into a battery case and assembled to prepare a lead storage battery.

表１にこれら電池をそれぞれ２０個作成し、化成中の短絡数を比較した結果を示した。従来例の電池（従来電池）は、２０個中９個短絡したのに対し、本発明の電池は１個も短絡することはなかった。従って、本発明の電池（本発明電池）は、化成中の短絡を抑制する効果がある。

Figure 2005216804
Table 1 shows the results of making 20 of each of these batteries and comparing the number of short circuits during formation. The battery of the conventional example (conventional battery) was short-circuited by 9 out of 20, whereas the battery of the present invention was never short-circuited. Therefore, the battery of the present invention (the present invention battery) has an effect of suppressing a short circuit during chemical conversion.
Figure 2005216804

Claims (1)

正極板と負極板がセパレータを介して捲回された極板群を有する円筒形密閉式鉛蓄電池の製造方法において、
未化成の捲回状態の前記極板群を硫酸溶液中に浸漬した状態で化成を行い、その後、電槽内に挿入して組み立てを行うことを特徴とする円筒形密閉式鉛蓄電池の製造方法。
In the manufacturing method of the cylindrical sealed lead-acid battery having the electrode plate group in which the positive electrode plate and the negative electrode plate are wound through the separator,
A method for producing a cylindrical sealed lead-acid battery, characterized in that chemical conversion is performed in a state in which the electrode plate group in an unformed wound state is immersed in a sulfuric acid solution, and then inserted into a battery case for assembly. .
JP2004025308A 2004-02-02 2004-02-02 Manufacturing method of cylindrical sealed lead-acid battery Expired - Fee Related JP4645039B2 (en)

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007172999A (en) * 2005-12-21 2007-07-05 Shin Kobe Electric Mach Co Ltd Lead-acid battery
CN100369299C (en) * 2005-12-30 2008-02-13 浙江南都电源动力股份有限公司 Forming method of lead-acid battery electrode plate transplantation
CN101853968A (en) * 2010-05-31 2010-10-06 张天任 Internalized charging method for standby lead-acid battery
CN105226338A (en) * 2015-10-20 2016-01-06 浙江天能动力能源有限公司 A kind of lead acid accumulator rapid internalization becomes charging method

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01132064A (en) * 1987-08-07 1989-05-24 Nippon Telegr & Teleph Corp <Ntt> Secondary battery and its manufacture
JPH0322353A (en) * 1989-06-20 1991-01-30 Matsushita Electric Ind Co Ltd Manufacture of electrode plate for lead-acid battery
JPH04248261A (en) * 1991-01-24 1992-09-03 Shin Kobe Electric Mach Co Ltd Formation of electrode plate for lead-acid battery

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01132064A (en) * 1987-08-07 1989-05-24 Nippon Telegr & Teleph Corp <Ntt> Secondary battery and its manufacture
JPH0322353A (en) * 1989-06-20 1991-01-30 Matsushita Electric Ind Co Ltd Manufacture of electrode plate for lead-acid battery
JPH04248261A (en) * 1991-01-24 1992-09-03 Shin Kobe Electric Mach Co Ltd Formation of electrode plate for lead-acid battery

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007172999A (en) * 2005-12-21 2007-07-05 Shin Kobe Electric Mach Co Ltd Lead-acid battery
CN100369299C (en) * 2005-12-30 2008-02-13 浙江南都电源动力股份有限公司 Forming method of lead-acid battery electrode plate transplantation
CN101853968A (en) * 2010-05-31 2010-10-06 张天任 Internalized charging method for standby lead-acid battery
CN105226338A (en) * 2015-10-20 2016-01-06 浙江天能动力能源有限公司 A kind of lead acid accumulator rapid internalization becomes charging method

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