JP4652028B2 - Sealing method for sealed lead-acid battery terminals - Google Patents
Sealing method for sealed lead-acid battery terminals Download PDFInfo
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- JP4652028B2 JP4652028B2 JP2004343453A JP2004343453A JP4652028B2 JP 4652028 B2 JP4652028 B2 JP 4652028B2 JP 2004343453 A JP2004343453 A JP 2004343453A JP 2004343453 A JP2004343453 A JP 2004343453A JP 4652028 B2 JP4652028 B2 JP 4652028B2
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- battery case
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- lead
- terminal sealing
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- 238000007789 sealing Methods 0.000 title claims description 58
- 238000000034 method Methods 0.000 title claims description 33
- 239000002253 acid Substances 0.000 title claims description 23
- 239000000853 adhesive Substances 0.000 claims description 13
- 230000001070 adhesive effect Effects 0.000 claims description 13
- 238000001035 drying Methods 0.000 claims description 10
- 235000009781 Myrtillocactus geometrizans Nutrition 0.000 claims description 9
- 238000002485 combustion reaction Methods 0.000 claims description 8
- BLRPTPMANUNPDV-UHFFFAOYSA-N Silane Chemical compound [SiH4] BLRPTPMANUNPDV-UHFFFAOYSA-N 0.000 claims description 7
- 229910000077 silane Inorganic materials 0.000 claims description 7
- 239000002904 solvent Substances 0.000 claims description 5
- 241001367069 Hemiargus ceraunus Species 0.000 claims 1
- 238000000151 deposition Methods 0.000 claims 1
- 239000007789 gas Substances 0.000 description 11
- 240000009125 Myrtillocactus geometrizans Species 0.000 description 8
- 230000000052 comparative effect Effects 0.000 description 7
- 229920005989 resin Polymers 0.000 description 7
- 239000011347 resin Substances 0.000 description 7
- 239000004743 Polypropylene Substances 0.000 description 5
- 229920001155 polypropylene Polymers 0.000 description 5
- 150000001875 compounds Chemical class 0.000 description 4
- MYMOFIZGZYHOMD-UHFFFAOYSA-N Dioxygen Chemical compound O=O MYMOFIZGZYHOMD-UHFFFAOYSA-N 0.000 description 3
- 239000011248 coating agent Substances 0.000 description 3
- 238000000576 coating method Methods 0.000 description 3
- 229910001882 dioxygen Inorganic materials 0.000 description 3
- 239000001307 helium Substances 0.000 description 3
- 229910052734 helium Inorganic materials 0.000 description 3
- SWQJXJOGLNCZEY-UHFFFAOYSA-N helium atom Chemical compound [He] SWQJXJOGLNCZEY-UHFFFAOYSA-N 0.000 description 3
- 239000007788 liquid Substances 0.000 description 3
- -1 polypropylene Polymers 0.000 description 3
- 238000012360 testing method Methods 0.000 description 3
- 229910000978 Pb alloy Inorganic materials 0.000 description 2
- 239000006087 Silane Coupling Agent Substances 0.000 description 2
- 229910002808 Si–O–Si Inorganic materials 0.000 description 2
- QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 description 2
- 238000007796 conventional method Methods 0.000 description 2
- 239000003792 electrolyte Substances 0.000 description 2
- 229920006332 epoxy adhesive Polymers 0.000 description 2
- 125000000524 functional group Chemical group 0.000 description 2
- 238000011835 investigation Methods 0.000 description 2
- 239000001301 oxygen Substances 0.000 description 2
- 229910052760 oxygen Inorganic materials 0.000 description 2
- 230000001105 regulatory effect Effects 0.000 description 2
- 238000009864 tensile test Methods 0.000 description 2
- 229920001187 thermosetting polymer Polymers 0.000 description 2
- 229920000122 acrylonitrile butadiene styrene Polymers 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 239000008151 electrolyte solution Substances 0.000 description 1
- 239000003999 initiator Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 238000005507 spraying 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
- Sealing Battery Cases Or Jackets (AREA)
- Connection Of Batteries Or Terminals (AREA)
Description
本発明は、液密性および作業性に優れる密閉形鉛蓄電池の端子封着方法に関する。 The present invention relates to a terminal sealing method for a sealed lead-acid battery excellent in liquid-tightness and workability.
近年、密閉形鉛蓄電池は、電解液の補充が不要な制御弁式鉛蓄電池が主流になり、産業用電気機器やポータブル電気機器の電源、自動車のＳＬＩ用電源、電動車の移動用電源などに多用されている。この密閉形鉛蓄電池は、極板に群圧を掛けて良好な放電特性を維持するために、或いは設置スペースの制約から、極板が水平になる横置きか、ほぼ水平になる斜め置きして使用することが多い。この場合電槽蓋と鉛端子の接合部に電解液が侵入するため、前記接合部は液漏れが起きないように封着される。 In recent years, sealed lead-acid batteries have become mainstream of valve-regulated lead-acid batteries that do not require replenishment of electrolyte, and are used as power sources for industrial and portable electrical devices, SLI power sources for automobiles, and power sources for moving electric vehicles It is used a lot. This sealed lead-acid battery should be placed horizontally or obliquely so that the electrode plate is horizontal or almost horizontal in order to maintain good discharge characteristics by applying a group pressure to the electrode plate or due to installation space constraints. Often used. In this case, since the electrolyte enters the joint between the battery case lid and the lead terminal, the joint is sealed so as not to leak.
前記電槽蓋と鉛端子の封着は、従来、電槽蓋の端子封着部をフレーム（都市ガス炎）処理して前記封着部に酸素結合基や二重結合基を形成して接着剤との濡れ性を改善し、次いで前記電槽蓋の端子封着部に接着剤を充填する方法により行われていた。 For sealing the battery case lid and the lead terminal, conventionally, the terminal sealing part of the battery case cover is treated with a frame (city gas flame) to form an oxygen bond group or a double bond group on the seal part and bond it. The wettability with the agent is improved, and then the terminal sealing part of the battery case lid is filled with an adhesive.
この他、電槽蓋の端子封着部に親水性粉末を存在させて親水性を改善する方法（特許文献１）が提案されている。 In addition, a method (Patent Document 1) has been proposed in which hydrophilic powder is present in the terminal sealing portion of the battery case lid to improve hydrophilicity.
しかしながら、前記いずれの方法も、電槽蓋側に未着部が生じ十分な液密性が得られなかった。電槽蓋にはＡＢＳ樹脂またはポリプロピレン（ＰＰ）樹脂などが使用されているが、特にＰＰ樹脂電槽蓋において前記未着部が生じ易く、密閉形鉛蓄電池を横置きまたは斜め置きしたとき、前記封着部から電解液が漏出することがあった。 However, in any of the above methods, an unattached portion is generated on the battery case lid side, and sufficient liquid-tightness cannot be obtained. ABS resin or polypropylene (PP) resin or the like is used for the battery case lid, but the non-attached portion is likely to occur particularly in the PP resin battery case lid, and when the sealed lead-acid battery is placed horizontally or obliquely, The electrolyte solution sometimes leaked from the sealing portion.
また鉛合金と樹脂を、両者間に鉛合金表面との間で耐硫酸性の結合を生じる官能基および樹脂との間で耐硫酸性の結合を生じる官能基を併せもつ化合物を配して接着する方法（特許文献２）が提案されているが、この方法は封着性は優れるが、前記化合物がシランカップリング剤またはシランカップリング剤にラジカル開始剤を添加した化合物のため塗布後に化合物を長時間乾燥するか、高圧処理する必要があり生産性が劣った。 Adhesion between a lead alloy and a resin with a compound having both a functional group that generates a sulfate-resistant bond between the lead alloy surface and a functional group that generates a sulfate-resistant bond between the resin and the resin. (Patent Document 2) has been proposed, but this method is excellent in sealing properties. However, since the compound is a silane coupling agent or a compound obtained by adding a radical initiator to a silane coupling agent, the compound is applied after coating. Productivity was inferior due to drying for a long time or high pressure treatment.
このようなことから、本発明者は、液密性および生産性の両方に優れる封着方法を検討した。その結果、特許文献２記載方法で接着した樹脂の表面にはＳｉＣＨ３が酸化して生成したＳｉ−Ｏ−Ｓｉ基が存在していることを突き止めた。 In view of the above, the present inventor examined a sealing method excellent in both liquid tightness and productivity. As a result, it was found that Si—O—Si groups formed by oxidation of SiCH 3 were present on the surface of the resin bonded by the method described in Patent Document 2.
次に、前記電槽蓋の端子封着部にＳｉ−Ｏ−Ｓｉ基を存在させるための簡便な方法を検討し、前記端子封着部にシランガス（ＳｉＨ４）燃焼炎の青炎部を当てる方法、シラザン（ＳｉＨ２ＮＨ）を塗布し乾燥する方法を見出した。これらを基にさらに検討を重ねて本発明を完成させるに至った。 Next, a simple method for allowing Si—O—Si groups to be present in the terminal sealing portion of the battery case lid is examined, and a blue flame portion of a silane gas (SiH 4 ) combustion flame is applied to the terminal sealing portion. method, we found a method of coating and drying a silazane (SiH 2 NH). Based on these, further studies have been made and the present invention has been completed.
本発明は、液密性および生産性に優れる密閉形鉛蓄電池の端子封着方法の提供を目的とする。 An object of this invention is to provide the terminal sealing method of the sealed lead acid battery which is excellent in liquid-tightness and productivity.
請求項１記載発明は、電槽蓋に鉛端子を封着する密閉形鉛蓄電池の端子封着方法において、前記電槽蓋の端子封着部にシランガス（ＳｉＨ４）燃焼炎の７００〜１２００℃の青炎部を当て、Ｓｉ系酸化物を堆積させて厚み０．０５μｍ以上のＳｉ系酸化物層を形成し、次いで前記電槽蓋の端子封着部に接着剤を充填することを特徴とする密閉形鉛蓄電池の端子封着方法である。 A first aspect of the present invention is a terminal sealing method for a sealed lead-acid battery in which a lead terminal is sealed to a battery case lid, and a silane gas (SiH 4 ) combustion flame of 700 to 1200 ° C. is applied to the terminal sealing part of the battery case lid. The Si flame oxide portion is applied, Si-based oxide is deposited to form a Si-based oxide layer having a thickness of 0.05 μm or more, and then the terminal sealing portion of the battery case lid is filled with an adhesive. This is a terminal sealing method for a sealed lead-acid battery.
請求項２記載発明は、電槽蓋に鉛端子を封着する密閉形鉛蓄電池の端子封着方法において、前記電槽蓋の端子封着部に溶媒に溶かしたシラザン（ＳｉＨ２ＮＨ）を膜状に塗布し、これを８０〜１３０℃の温度で乾燥して厚み０．０５μｍ以上のＳｉ系酸化物層を形成し、次いで前記電槽蓋の端子封着部に接着剤を充填することを特徴とする密閉形鉛蓄電池の端子封着方法である。 According to a second aspect of the present invention, there is provided a terminal sealing method for a sealed lead-acid battery in which a lead terminal is sealed on a battery case lid, and a film of silazane (SiH 2 NH) dissolved in a solvent is formed on the terminal sealing portion of the battery case lid. And then drying at a temperature of 80 to 130 ° C. to form a Si-based oxide layer having a thickness of 0.05 μm or more, and then filling the terminal sealing part of the battery case lid with an adhesive. It is the terminal sealing method of the sealed lead acid battery characterized.
本発明の端子封着方法は、電槽蓋の端子封着部にＳｉ系酸化物層を形成して、前記封着部における接着剤の濡れ性を改善するので、前記電槽蓋の端子封着部には接着剤の未着部がなくなり、液漏れが防止される。 In the terminal sealing method of the present invention, since the Si-based oxide layer is formed on the terminal sealing portion of the battery case lid to improve the wettability of the adhesive in the sealing portion, the terminal sealing of the battery case lid is performed. There is no unattached part of the adhesive in the attachment part, and liquid leakage is prevented.
本発明では、前記Ｓｉ系酸化物層を、電槽蓋の端子封着部にシランガス（ＳｉＨ４）燃焼炎の青炎部を当て、或いは溶媒に溶かしたシラザン（ＳｉＨ２ＮＨ）を膜状に塗布し乾燥して形成するので、工程が簡略であり生産性に優れる。 In the present invention, the Si-based oxide layer is formed into a film by applying a blue flame portion of a silane gas (SiH 4 ) combustion flame to the terminal sealing portion of the battery case lid, or silazane (SiH 2 NH) dissolved in a solvent. Since it is formed by coating and drying, the process is simple and the productivity is excellent.
請求項１記載発明において、シランガスの燃焼炎とは、シランガスと、酸素ガス或いは空気などの酸素含有ガスとが反応して得られる燃焼炎である。 In the present invention, the combustion flame of silane gas is a combustion flame obtained by reacting silane gas with oxygen-containing gas such as oxygen gas or air.
請求項１記載発明において、前記燃焼炎の青炎部の温度を７００〜１２００℃に規定する理由は、７００℃未満でも、１２００℃を超えても、所望のＳｉ系酸化物層が形成されず、十分な濡れ性が得られないためである。 In claim 1, the reason why the temperature of the blue flame portion of the combustion flame is defined as 700 to 1200 ° C. is that a desired Si-based oxide layer is not formed even if it is less than 700 ° C. or exceeds 1200 ° C. This is because sufficient wettability cannot be obtained.
請求項２記載発明において、シラザンを電槽蓋の封着部に膜状に塗付する方法は、例えば溶媒に溶かしたシラザンを電槽蓋の封着部に刷毛で塗布するか、スプレイで吹付ける方法が簡便で推奨される。 In the invention according to claim 2, silazane is applied to the sealing part of the battery case lid in a film form by, for example, applying silazane dissolved in a solvent to the sealing part of the battery case lid with a brush or blowing it with a spray. The attaching method is simple and recommended.
前記塗布したシラザン溶液の乾燥温度を８０〜１３０℃に規定する理由は、８０℃未満でも、１３０℃を超えても、所望のＳｉ系酸化物層が形成されず、十分な濡れ性が得られないためである。前記乾燥方法としては熱風吹付け法が簡便で推奨される。 The reason why the drying temperature of the coated silazane solution is regulated to 80 to 130 ° C. is that even if it is less than 80 ° C. or exceeds 130 ° C., a desired Si-based oxide layer is not formed, and sufficient wettability is obtained. Because there is no. As the drying method, a hot air spraying method is simple and recommended.
本発明において、Ｓｉ系酸化物層の厚みを０．０５μｍ以上に規定する理由は、０．０５μｍ未満では十分な濡れ性が得られないためである。 In the present invention, the reason why the thickness of the Si-based oxide layer is specified to be 0.05 μm or more is that sufficient wettability cannot be obtained when the thickness is less than 0.05 μm.
本発明は、電槽蓋に接着剤との濡れ性の悪いポリプロピレン樹脂製電槽蓋を用いたとき、また接着剤に熱硬化形エポキシ系接着剤を用いたとき、特にその効果が大きい。 The present invention is particularly effective when a battery case made of polypropylene resin having poor wettability with an adhesive is used for the battery case lid, and when a thermosetting epoxy adhesive is used for the adhesive.
常法により密閉形鉛蓄電池を製造した。但し電槽蓋と鉛端子の封着は下記方法により行った。即ち、電槽内に収納した極板群のストラップに接続された極柱をポリプロピレン製電槽蓋に成型された貫通口に挿入して電槽上部に蓋を施し電槽と蓋を接着した。蓋の貫通口及びその周囲は蓋上面より窪んだ凹部に形成され端子封着部を形成している。そして該極柱の上端に蓋上面よりは上方に突出する長さを有する鉛端子の下端を溶接し、鉛端子下端も含め端子封着部に、シランガス（ＳｉＨ４）と酸素ガスの燃焼炎の青炎部を当ててＳｉ系酸化物を層状に堆積させ、端子封着部である凹部内に７０℃で１時間保持した熱硬化形エポキシ系接着剤を蓋上面とほぼ同一面となる程度に充填した。前記青炎部の温度は酸素ガス量を調節して７００〜１２００℃の範囲内で種々に変化させた。またＳｉ系酸化物層の厚みは０．０５〜５μｍの範囲で種々に変化させた。 A sealed lead-acid battery was produced by a conventional method. However, the battery case lid and the lead terminal were sealed by the following method. That is, the pole column connected to the strap of the electrode plate group housed in the battery case was inserted into the through-hole formed in the polypropylene battery case cover, and the battery case and the cover were adhered to each other by covering the upper part of the battery case. The through-hole of the lid and its periphery are formed in a recess recessed from the top surface of the lid to form a terminal sealing portion. Then, the lower end of a lead terminal having a length projecting upward from the upper surface of the lid is welded to the upper end of the pole column, and the silane gas (SiH 4 ) and oxygen gas combustion flame is applied to the terminal sealing portion including the lower end of the lead terminal. Applying a blue flame part to deposit Si-based oxide in a layered form, and thermosetting epoxy adhesive held at 70 ° C. for 1 hour in the concave part, which is the terminal sealing part, is almost flush with the top surface of the lid Filled. The temperature of the blue flame part was variously changed within the range of 700 to 1200 ° C. by adjusting the amount of oxygen gas. The thickness of the Si-based oxide layer was variously changed in the range of 0.05 to 5 μm.
得られた密閉形鉛蓄電池について、電槽蓋と鉛端子間の封着性をヘリウムリークテストにより調べた。ヘリウムリークテストは真空フード法により行った。
即ち、電槽側面に穴を開け、電槽内を真空排気したのち、Ｈｅガスを端子封着部に吹付け、電槽内に漏洩したＨｅガス量を測定した。
漏洩したＨｅガス量が１０−３Ｐａ・Ｌ／ｓｅｃ以下のものは封着性が良好（○）、１０−３Ｐａ・Ｌ／ｓｅｃを超えたものは封着性が不良（×）と判定した。
About the obtained sealed lead acid battery, the sealing property between a battery case lid and a lead terminal was examined by a helium leak test. The helium leak test was performed by the vacuum hood method.
That is, after making a hole in the battery case side and evacuating the inside of the battery case, He gas was sprayed onto the terminal sealing portion, and the amount of He gas leaked into the battery case was measured.
When the leaked He gas amount is 10 −3 Pa · L / sec or less, the sealing property is good (◯), and when it exceeds 10 −3 Pa · L / sec, the sealing property is judged as poor (×). did.
前記ヘリウムリークテスト後の鉛蓄電池を解体して電槽蓋の端子封着部を切り出し、電槽蓋部分と接着剤との引張試験を行った。
引張試験後の破面と引張強度を対応させて、９０ｋｇｆ／ｃｍ２以上なら未着部がなく、９０ｋｇｆ／ｃｍ２未満の場合、未着部があることを確認した。
The lead storage battery after the helium leak test was disassembled, the terminal sealing part of the battery case lid was cut out, and a tensile test between the battery case lid part and the adhesive was performed.
Corresponding to the fracture surface after the tensile test and the tensile strength, it was confirmed that there was no unattached part when it was 90 kgf / cm 2 or more, and there was an unattached part when it was less than 90 kgf / cm 2 .
前記密閉形鉛蓄電池を製造したときと同じ条件で電槽蓋の端子封着部にＳｉ系酸化物層を形成し、その部分の接着剤の濡れ性を常法により調べた。４５ｄｙｎ／ｃｍ以上を濡れ性が良好、４５ｄｙｎ／ｃｍ未満を濡れ性が不良と判定した。 Under the same conditions as when the sealed lead-acid battery was manufactured, a Si-based oxide layer was formed on the terminal sealing portion of the battery case lid, and the wettability of the adhesive at that portion was examined by a conventional method. It was determined that 45 dyn / cm or more had good wettability and less than 45 dyn / cm was poor wettability.
［比較例１］
青炎温度または酸化物層の厚みを本発明規定値外とした他は、実施例１と同じ方法により密閉形鉛蓄電池を製造し、実施例１と同じ方法により封着性および未着部有無を調べた。また実施例１と同じ方法により電槽蓋の端子封着部の濡れ性を調べた。
[Comparative Example 1]
A sealed lead-acid battery was produced by the same method as in Example 1 except that the blue flame temperature or the thickness of the oxide layer was outside the specified value of the present invention. I investigated. Further, the wettability of the terminal sealing part of the battery case lid was examined by the same method as in Example 1.
［比較例２］
電槽蓋の端子封着部に従来のフレーム処理を施した他は、実施例１と同じ方法により密閉形鉛蓄電池を製造し、実施例１と同じ方法により封着性および未着部有無を調べた。また実施例１と同じ方法により電槽蓋封着部の濡れ性を調べた。
[Comparative Example 2]
A sealed lead-acid battery is manufactured by the same method as in Example 1 except that the conventional frame processing is applied to the terminal sealing part of the battery case lid. Examined. Further, the wettability of the battery case lid sealing part was examined by the same method as in Example 1.
実施例１および比較例１、２の調査結果を表１に示す。
表１には青炎温度およびＳｉ系酸化物層の厚みを併記した。
The investigation results of Example 1 and Comparative Examples 1 and 2 are shown in Table 1.
Table 1 shows the blue flame temperature and the thickness of the Si-based oxide layer.
表１から明らかなように、本発明例の実施例１（Ｎｏ．１〜６）はいずれも封着性が優れた。これは電槽蓋の端子封着部にＳｉ系酸化物層を形成したため接着剤の濡れ性が向上し未着部がなくなったことによる。未着部がなくなったことは電槽蓋と鉛端子間の引張強度が高いことから伺える。 As is apparent from Table 1, all of Examples 1 (Nos. 1 to 6) of the present invention had excellent sealing properties. This is because the wettability of the adhesive is improved and the non-attached portion is eliminated because the Si-based oxide layer is formed on the terminal sealing portion of the battery case lid. It can be inferred that the unattached part disappeared because the tensile strength between the battery case lid and the lead terminal is high.
これに対し、比較例１のＮｏ．７、８は青炎温度が本発明規定値外だったため、Ｎｏ．９はＳｉ系酸化物層が薄かったため、比較例２のＮｏ．１０は電槽蓋の端子封着部にＳｉ系酸化物層が存在しなかったため、いずれも濡れ性が低下して未着部が生じ封着性が劣った。 On the other hand, the comparative example 1 No. In Nos. 7 and 8, the blue flame temperature was outside the specified value of the present invention. No. 9 has a thin Si-based oxide layer. No. 10 had no Si-based oxide layer in the terminal sealing part of the battery case lid, so that the wettability was reduced and an unattached part was generated, and the sealing property was inferior.
前記電槽蓋の端子封着部に溶媒に溶かしたシラザン（ＳｉＨ２ＮＨ）を膜状に塗布し、８０〜１３０℃の温度で熱風乾燥してＳｉ系酸化物層を形成した他は、実施例１と同じ方法により密閉形鉛蓄電池を製造し、実施例１と同じ方法により封着性および未着部有無を調べた。また実施例１と同じ方法により電槽蓋の端子封着部の濡れ性を調べた。 Except that the terminal sealing part of the battery case lid was coated with silazane (SiH 2 NH) dissolved in a solvent and dried in hot air at a temperature of 80 to 130 ° C. to form a Si-based oxide layer. A sealed lead-acid battery was produced by the same method as in Example 1, and the sealing property and the presence or absence of unattached parts were examined by the same method as in Example 1. Further, the wettability of the terminal sealing part of the battery case lid was examined by the same method as in Example 1.
［比較例３］
乾燥温度または酸化物層の厚みを本発明規定値外とした他は、実施例２と同じ方法により密閉形鉛蓄電池を製造し、実施例２と同じ方法により封着性および未着部有無を調べた。また実施例２と同じ方法により電槽蓋の端子封着部の濡れ性を調べた。
[Comparative Example 3]
A sealed lead-acid battery was produced by the same method as in Example 2 except that the drying temperature or the thickness of the oxide layer was outside the specified values of the present invention. Examined. Further, the wettability of the terminal sealing part of the battery case lid was examined by the same method as in Example 2.
実施例２および比較例３の調査結果を表２に示した。
表２には乾燥温度およびＳｉ系酸化物層の厚みを併記した。
The investigation results of Example 2 and Comparative Example 3 are shown in Table 2.
Table 2 shows the drying temperature and the thickness of the Si-based oxide layer.
表２から明らかなように、本発明例の実施例２（Ｎｏ．１１〜１５）はいずれも封着性が優れた。これは電槽蓋の端子封着部にＳｉ系酸化物層を形成したため接着剤の濡れ性が向上し未着部がなくなったことによる。未着部がなくなったことは引張強度が高いことから伺える。 As is apparent from Table 2, all of Examples 2 (Nos. 11 to 15) of the present invention have excellent sealing properties. This is because the wettability of the adhesive is improved and the non-attached portion is eliminated because the Si-based oxide layer is formed on the terminal sealing portion of the battery case lid. It can be inferred that the unattached part disappeared from the high tensile strength.
これに対し、比較例３のＮｏ．１６、１７は乾燥温度が本発明規定値外のため、Ｎｏ．１８はＳｉ系酸化物層が薄かったため、いずれも濡れ性が低下して未着部が生じ封着性が劣った。 On the other hand, the comparative example 3 No. Nos. 16 and 17 have a drying temperature outside the specified value of the present invention. In No. 18, since the Si-based oxide layer was thin, the wettability was lowered and an unattached portion was generated, resulting in poor sealing properties.
実施例１、２で製造した各密閉形鉛蓄電池を横置きして使用したが、液漏れはいずれにも全く生じなかった。
Each sealed lead-acid battery produced in Examples 1 and 2 was used in a horizontal position, but no liquid leakage occurred at all.
Claims (2)
In a terminal sealing method for a sealed lead-acid battery in which a lead terminal is sealed to a battery case lid, silazane (SiH 2 NH) dissolved in a solvent is applied in a film shape to the terminal sealing portion of the battery case lid, A sealed lead-acid battery characterized in that a Si-based oxide layer having a thickness of 0.05 μm or more is formed by drying at a temperature of 80 to 130 ° C., and then an adhesive is filled in the terminal sealing portion of the battery case lid. Terminal sealing method.
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60230353A (en) * | 1984-04-26 | 1985-11-15 | Matsushita Electric Ind Co Ltd | Manufacture of sealed lead-acid battery |
| JPS61206160A (en) * | 1985-03-08 | 1986-09-12 | Matsushita Electric Ind Co Ltd | Manufacture of sealed lead-acid battery |
| JPH06150894A (en) * | 1992-11-02 | 1994-05-31 | Nippon Petrochem Co Ltd | Battery |
| JP2004259495A (en) * | 2003-02-25 | 2004-09-16 | Shin Kobe Electric Mach Co Ltd | Valve-regulated lead acid battery |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6435853A (en) * | 1987-07-31 | 1989-02-06 | Shin Kobe Electric Machinery | Manufacture of sealed lead storage battery |
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60230353A (en) * | 1984-04-26 | 1985-11-15 | Matsushita Electric Ind Co Ltd | Manufacture of sealed lead-acid battery |
| JPS61206160A (en) * | 1985-03-08 | 1986-09-12 | Matsushita Electric Ind Co Ltd | Manufacture of sealed lead-acid battery |
| JPH06150894A (en) * | 1992-11-02 | 1994-05-31 | Nippon Petrochem Co Ltd | Battery |
| JP2004259495A (en) * | 2003-02-25 | 2004-09-16 | Shin Kobe Electric Mach Co Ltd | Valve-regulated lead acid battery |
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