JP2015115113A - Manufacturing apparatus of power storage device, manufacturing apparatus, manufacturing method of power storage device - Google Patents
Manufacturing apparatus of power storage device, manufacturing apparatus, manufacturing method of power storage device Download PDFInfo
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- JP2015115113A JP2015115113A JP2013254327A JP2013254327A JP2015115113A JP 2015115113 A JP2015115113 A JP 2015115113A JP 2013254327 A JP2013254327 A JP 2013254327A JP 2013254327 A JP2013254327 A JP 2013254327A JP 2015115113 A JP2015115113 A JP 2015115113A
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- 238000004519 manufacturing process Methods 0.000 title claims abstract description 47
- 238000003860 storage Methods 0.000 title claims abstract description 31
- 230000002093 peripheral effect Effects 0.000 claims description 15
- 238000000034 method Methods 0.000 claims description 4
- 230000002265 prevention Effects 0.000 claims description 3
- 238000003825 pressing Methods 0.000 description 10
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 description 7
- 229910052751 metal Inorganic materials 0.000 description 4
- 239000002184 metal Substances 0.000 description 4
- 238000011144 upstream manufacturing Methods 0.000 description 4
- 239000011888 foil Substances 0.000 description 3
- 229910052782 aluminium Inorganic materials 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000011347 resin Substances 0.000 description 2
- 229920005989 resin Polymers 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 description 1
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 1
- 239000003990 capacitor Substances 0.000 description 1
- 239000011889 copper foil Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000008151 electrolyte solution Substances 0.000 description 1
- 229910001416 lithium ion Inorganic materials 0.000 description 1
- 239000007773 negative electrode material Substances 0.000 description 1
- 229910000652 nickel hydride Inorganic materials 0.000 description 1
- 239000007774 positive electrode material Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Classifications
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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
Landscapes
- Connection Of Batteries Or Terminals (AREA)
- Electric Double-Layer Capacitors Or The Like (AREA)
- Sealing Battery Cases Or Jackets (AREA)
- Secondary Cells (AREA)
Abstract
Description
本発明は、蓄電装置の製造装置、製造装置、蓄電装置の製造方法に関するものである。 The present invention relates to a power storage device manufacturing apparatus, a manufacturing apparatus, and a method of manufacturing a power storage device.
蓄電装置においてケースの蓋体に正負の電極端子が取り付けられるがケースの蓋体への電極端子の取付構造として、電極端子が蓋体から突出して電極端子の外周面に形成した雄ねじ部にナットを螺入して電極端子を蓋体に締結する構造が知られている。電極端子をケースの蓋体に締結する際に電極端子の回り止めをする治具を用いることで作業性を改善することができる。特許文献１に開示された密閉型二次電池では、ボルト式端子のボルト部には特殊ナットの脱着に際して供回り防止工具が嵌合される嵌合部を設けている。 In the power storage device, positive and negative electrode terminals are attached to the case lid, but as a structure for attaching the electrode terminals to the case lid, nuts are attached to the male screw portions formed on the outer peripheral surface of the electrode terminals as the electrode terminals protrude from the lid. A structure in which an electrode terminal is fastened to a lid by screwing is known. Workability can be improved by using a jig that prevents the electrode terminal from rotating when the electrode terminal is fastened to the case lid. In the sealed secondary battery disclosed in Patent Document 1, the bolt portion of the bolt-type terminal is provided with a fitting portion into which a rotation prevention tool is fitted when the special nut is attached or detached.
ところで、電極端子をケースの蓋体に締結する際に治具を用いて電極端子を回り止めしようとする場合、電極端子の嵌合穴に治具の棒材を挿入することになる。電極端子の嵌合穴と治具の棒材との関係として電極端子の嵌合穴に対し精度の高い治具（棒材）を用いることは高精度に位置決めすることができるが電極端子の嵌合穴に治具の棒材を入れにくく組付性が悪い。特に、蓄電装置においては、電極端子が回転すると、電極端子の下端が、ケース内側でケース内壁に接触しやすくなったり、ケース内部の電極組立体との接続部に捩れが生じたりする。この為、治具を用いて端子を回り止めする時に嵌合穴に対して精度のよい治具を使うことが望まれるが、精度と組付性との関係として、精度が高くなるほど組付性が悪くなる。 By the way, when the electrode terminal is fastened to the lid of the case by using a jig, the jig rod is inserted into the fitting hole of the electrode terminal. Using a highly accurate jig (bar material) for the electrode terminal fitting hole as a relationship between the electrode terminal fitting hole and the jig bar material can be positioned with high accuracy. It is difficult to put the jig rods into the joint holes and the assembly is poor. In particular, in the power storage device, when the electrode terminal rotates, the lower end of the electrode terminal easily comes into contact with the inner wall of the case inside the case, or the connection portion with the electrode assembly inside the case is twisted. For this reason, it is desirable to use a highly accurate jig for the fitting hole when the terminal is prevented from rotating using a jig. However, as the relationship between accuracy and assemblability increases, assemblability increases as accuracy increases. Becomes worse.
本発明の目的は、組付性と高精度な位置決めを両立することができる蓄電装置の製造装置、製造装置、蓄電装置の製造方法を提供することにある。 An object of the present invention is to provide a power storage device manufacturing apparatus, a manufacturing apparatus, and a power storage device manufacturing method capable of achieving both assembling property and high-accuracy positioning.
上記課題を解決する蓄電装置の製造装置では、電極組立体を収容するケースが、ケース本体と、前記ケース本体の開口部を閉塞する蓋体を有し、円柱状をなす正負の電極端子が前記蓋体から突出して前記電極端子の外周面に形成された雄ねじ部にナットが螺入されて前記蓋体に締結された蓄電装置の製造装置であって、前記電極端子における前記蓋体から突出する部位の先端に形成された嵌合穴に挿入される棒材を備え、前記ナットの締め付け時に前記電極端子を回り止めすべく前記棒材が前記嵌合穴に挿入された状態において、ナット締結方向での前記棒材と前記嵌合穴によって形成された壁面との間に隙間を有し、反ナット締結方向での前記棒材と前記嵌合穴によって形成された壁面とを面接触させたことを要旨とする。 In a power storage device manufacturing apparatus that solves the above problems, a case that accommodates an electrode assembly includes a case body and a lid that closes an opening of the case body, and the positive and negative electrode terminals having a columnar shape are A power storage device manufacturing apparatus in which a nut is screwed into a male screw portion formed on an outer peripheral surface of the electrode terminal so as to protrude from a lid, and is fastened to the lid, and protrudes from the lid in the electrode terminal A nut fastening direction is provided in a state in which the rod is inserted into the fitting hole so as to prevent rotation of the electrode terminal when the nut is tightened. There is a gap between the bar and the wall formed by the fitting hole, and the bar and the wall formed by the fitting hole are in surface contact in the anti-nut fastening direction. Is the gist.
これによれば、ナットの締め付け時において、電極端子を回り止めすべく棒材が嵌合穴に挿入される。この状態において、ナット締結方向での棒材と嵌合穴によって形成された壁面との間に隙間を有するので、電極端子をケースの蓋体に締結する際において電極端子の回り止め用の棒材の嵌合穴への組付性に優れる。また、反ナット締結方向での棒材と嵌合穴によって形成された壁面とが面接触するので、高精度な位置決めを行うことができる。よって、電極端子をケースの蓋体に締結する際において電極端子の回り止め用の棒材の嵌合穴への組付性と高精度な位置決めを両立することができる。 According to this, at the time of tightening the nut, the bar is inserted into the fitting hole to prevent the electrode terminal from rotating. In this state, since there is a gap between the bar in the nut fastening direction and the wall formed by the fitting hole, the bar for preventing rotation of the electrode terminal when the electrode terminal is fastened to the lid of the case Excellent assembling to the fitting hole. In addition, since the bar in the anti-nut fastening direction and the wall surface formed by the fitting hole are in surface contact, highly accurate positioning can be performed. Therefore, when the electrode terminal is fastened to the lid of the case, it is possible to achieve both the assembling property of the rod for preventing rotation of the electrode terminal into the fitting hole and high-precision positioning.
上記蓄電装置の製造装置において、前記棒材は、円柱部と、前記円柱部の外面から外径側に延びる板状の羽根部を有するとよい。
上記蓄電装置の製造装置において、前記棒材は前記羽根部を２枚有し、前記２枚の羽根部は前記円柱部に対し１８０度間隔で設けられているとよい。
In the power storage device manufacturing apparatus, the bar may include a columnar portion and a plate-shaped blade portion extending from the outer surface of the columnar portion to the outer diameter side.
In the power storage device manufacturing apparatus, the bar may include two blade portions, and the two blade portions may be provided at an interval of 180 degrees with respect to the columnar portion.
上記蓄電装置の製造装置において、前記２枚の羽根部は前記棒材の中心に対し点対称となっているとよい。
上記蓄電装置の製造装置において、前記嵌合穴は前記羽根部に対応する切欠きを有し、前記切欠きの中心を通る直線は、前記棒材の中心を通り、前記各羽根部の中心を通る直線は、前記棒材の中心から離間しているとよい。
In the power storage device manufacturing apparatus, the two blade portions may be point-symmetric with respect to the center of the bar.
In the power storage device manufacturing apparatus, the fitting hole has a cutout corresponding to the blade portion, and a straight line passing through the center of the cutout passes through the center of the bar member and the center of each blade portion. The straight line that passes through may be spaced from the center of the bar.
上記課題を解決する製造装置では、円柱状部材の頂面に形成された凹溝と係合し、回り止めを行う製造装置において、前記凹溝に挿入される棒材を有し、前記棒材は、前記凹溝に沿って延びる少なくとも二枚の羽根部を備え、前記二枚の羽根部は、その厚み方向に相互にオフセットして配置されていることを要旨とする。 In the manufacturing apparatus that solves the above problem, in the manufacturing apparatus that engages with the concave groove formed on the top surface of the columnar member and performs rotation prevention, the bar has a bar inserted into the concave groove, and the bar Is provided with at least two blade portions extending along the concave groove, and the two blade portions are offset from each other in the thickness direction.
これによれば、回り止めすべく円柱状部材の頂面に形成された凹溝に棒材が挿入される。棒材は、凹溝に沿って延びる少なくとも二枚の羽根部が備えられ、二枚の羽根部は、その厚み方向に相互にオフセットして配置されているので、回り止め用の棒材の凹溝への組付性に優れるとともに高精度な位置決めを行うことができる。よって、回り止め用の棒材の凹溝への組付性と高精度な位置決めを両立することができる。 According to this, the bar is inserted into the concave groove formed on the top surface of the cylindrical member to prevent rotation. The bar is provided with at least two blade portions extending along the concave groove, and the two blade portions are arranged offset with respect to each other in the thickness direction. It is excellent in assembling into the groove and can be positioned with high accuracy. Therefore, it is possible to achieve both the assembling property of the rod for preventing rotation to the concave groove and the highly accurate positioning.
上記製造装置において、前記棒材は円柱部を備え、前記二枚の羽根部は、前記円柱部より反対方向に延びているとよい。
上記課題を解決する蓄電装置の製造方法では、ケースの蓋体に対し、電極組立体に連結された円柱状をなす正負の電極端子を、前記蓋体から突出させた状態で、前記電極端子の外周面に形成された雄ねじ部にナットを螺入し、前記蓋体に締結する蓄電装置の製造方法であって、前記ナットの締め付け時に前記電極端子を回り止めすべく、前記電極端子における前記蓋体から突出する部位の先端に形成された嵌合穴に棒材を挿入し、ナット締結方向での前記棒材と前記嵌合穴によって形成された壁面との間に隙間を形成し、反ナット締結方向での前記棒材と前記嵌合穴によって形成された壁面とを面接触させることを要旨とする。
The said manufacturing apparatus WHEREIN: The said rod is provided with a cylindrical part, It is good for the said 2 blade | wing part to extend in the opposite direction from the said cylindrical part.
In a method for manufacturing a power storage device that solves the above-described problem, a cylindrical positive and negative electrode terminal connected to an electrode assembly is protruded from the lid body with respect to the case lid body, A method of manufacturing a power storage device in which a nut is screwed into a male thread portion formed on an outer peripheral surface and fastened to the lid, wherein the lid of the electrode terminal is configured to prevent the electrode terminal from rotating when the nut is tightened. A bar is inserted into the fitting hole formed at the tip of the part protruding from the body, and a gap is formed between the bar in the nut fastening direction and the wall surface formed by the fitting hole, and the anti-nut The gist is to bring the bar in the fastening direction into contact with the wall formed by the fitting hole.
これによれば、ナットの締め付け時において、電極端子を回り止めすべく棒材が嵌合穴に挿入される。この状態において、ナット締結方向での棒材と嵌合穴によって形成された壁面との間に隙間が形成されるので、電極端子をケースの蓋体に締結する際において電極端子の回り止め用の棒材の嵌合穴への組付性に優れる。また、反ナット締結方向での棒材と嵌合穴によって形成された壁面とが面接触するので、高精度な位置決めを行うことができる。よって、電極端子をケースの蓋体に締結する際において電極端子の回り止め用の棒材の嵌合穴への組付性と高精度な位置決めを両立することができる。 According to this, at the time of tightening the nut, the bar is inserted into the fitting hole to prevent the electrode terminal from rotating. In this state, since a gap is formed between the bar in the nut fastening direction and the wall surface formed by the fitting hole, when the electrode terminal is fastened to the lid of the case, it is used to prevent the electrode terminal from rotating. Excellent assemblability of rods into fitting holes. In addition, since the bar in the anti-nut fastening direction and the wall surface formed by the fitting hole are in surface contact, highly accurate positioning can be performed. Therefore, when the electrode terminal is fastened to the lid of the case, it is possible to achieve both the assembling property of the rod for preventing rotation of the electrode terminal into the fitting hole and high-precision positioning.
本発明によれば、組付性と高精度な位置決めを両立することができる。 According to the present invention, it is possible to achieve both assembling properties and highly accurate positioning.
以下、蓄電装置を二次電池に具体化した一実施形態を図１〜図１２にしたがって説明する。
なお、図面において、水平面を、直交するＸ，Ｙ方向で規定するとともに、上下方向をＺ方向で規定している。
Hereinafter, an embodiment in which the power storage device is embodied as a secondary battery will be described with reference to FIGS.
In the drawings, the horizontal plane is defined by the orthogonal X and Y directions, and the vertical direction is defined by the Z direction.
図１〜図３に示すように、二次電池１０において、金属製のケース１１には電極組立体２０および電解液（図示せず）が収容されている。また、ケース１１は、上面開口部を有する直方体状のケース本体１２と、ケース本体１２の開口部を閉塞する矩形平板状の蓋体１３とを有する。ケース本体１２と蓋体１３は、何れも金属製（例えば、ステンレスやアルミニウム）であり、ケース本体１２と蓋体１３はレーザー溶接によって接合されている。また、本実施形態の二次電池１０は、その外周が角型をなす角型電池であり、リチウムイオン電池である。 As shown in FIGS. 1 to 3, in the secondary battery 10, an electrode assembly 20 and an electrolytic solution (not shown) are accommodated in a metal case 11. Further, the case 11 includes a rectangular parallelepiped case main body 12 having an upper surface opening, and a rectangular flat plate-shaped lid 13 that closes the opening of the case main body 12. The case main body 12 and the lid body 13 are both made of metal (for example, stainless steel or aluminum), and the case main body 12 and the lid body 13 are joined by laser welding. Further, the secondary battery 10 of the present embodiment is a square battery whose outer periphery forms a square shape, and is a lithium ion battery.
電極組立体２０は、正極電極２１、負極電極２２、および正極電極２１と負極電極２２とを絶縁するセパレータを有する。正極電極２１は、正極金属箔（アルミニウム箔）の両面に正極活物質を備える。負極電極２２は、負極金属箔（銅箔）の両面に負極活物質を備える。そして、電極組立体２０は、複数の正極電極２１と複数の負極電極２２が交互に積層されるとともに、両電極の間に多孔質にて樹脂製のセパレータが介在された積層構造である。 The electrode assembly 20 includes a positive electrode 21, a negative electrode 22, and a separator that insulates the positive electrode 21 from the negative electrode 22. The positive electrode 21 includes a positive electrode active material on both surfaces of a positive metal foil (aluminum foil). The negative electrode 22 includes a negative electrode active material on both surfaces of a negative electrode metal foil (copper foil). The electrode assembly 20 has a laminated structure in which a plurality of positive electrodes 21 and a plurality of negative electrodes 22 are alternately laminated, and a porous resin separator is interposed between the electrodes.
正極電極２１は、一辺（長辺）の一部に正極集電タブ２３を有し、負極電極２２は、一辺（長辺）の一部に負極集電タブ２４を有する。複数の正極電極２１は、それぞれの正極集電タブ２３が積層方向に沿って列状に配置されるように積層される。同様に、複数の負極電極２２は、それぞれの負極集電タブ２４が、正極集電タブ２３と重ならないように積層方向に沿って列状に配置されるように積層される。電極組立体２０は、正極集電タブ２３を集めてなる正極タブ群２５を備える。この正極タブ群２５の少なくとも最外の正極集電タブ２３が、正極導電部材２６と溶接されており、正極タブ群２５が電極組立体２０における正極端子３０への接続部となる。また、電極組立体２０は、負極集電タブ２４を集めてなる負極タブ群２７を備える。この負極タブ群２７の少なくとも最外の負極集電タブ２４が負極導電部材２８と溶接されており、負極タブ群２７が電極組立体２０における負極端子３１への接続部となる。 The positive electrode 21 has a positive current collecting tab 23 on a part of one side (long side), and the negative electrode 22 has a negative current collecting tab 24 on a part of one side (long side). The plurality of positive electrodes 21 are stacked such that the respective positive electrode current collecting tabs 23 are arranged in a row along the stacking direction. Similarly, the plurality of negative electrode electrodes 22 are stacked such that the respective negative electrode current collecting tabs 24 are arranged in a row along the stacking direction so as not to overlap the positive electrode current collecting tabs 23. The electrode assembly 20 includes a positive electrode tab group 25 formed by collecting positive electrode current collecting tabs 23. At least the outermost positive electrode current collecting tab 23 of the positive electrode tab group 25 is welded to the positive electrode conductive member 26, and the positive electrode tab group 25 becomes a connection portion to the positive electrode terminal 30 in the electrode assembly 20. The electrode assembly 20 includes a negative electrode tab group 27 formed by collecting the negative electrode current collecting tabs 24. At least the outermost negative electrode current collecting tab 24 of the negative electrode tab group 27 is welded to the negative electrode conductive member 28, and the negative electrode tab group 27 serves as a connection portion to the negative electrode terminal 31 in the electrode assembly 20.
正極導電部材２６には、電極端子としての正極端子３０が溶接されるとともに、負極導電部材２８には、電極端子としての負極端子３１が溶接されている。正極端子３０および負極端子３１は、全体形状として円柱状をなしている。正極端子３０および負極端子３１は、それぞれ、円柱状の極柱部４０と、四角板状をなす基部４１を有する。基部４１の中央から極柱部４０が立設されている。極柱部４０の外周面に雄ねじ部４２を有する。 A positive electrode terminal 30 as an electrode terminal is welded to the positive electrode conductive member 26, and a negative electrode terminal 31 as an electrode terminal is welded to the negative electrode conductive member 28. The positive electrode terminal 30 and the negative electrode terminal 31 have a columnar shape as a whole. Each of the positive electrode terminal 30 and the negative electrode terminal 31 includes a columnar polar column portion 40 and a base portion 41 having a square plate shape. A pole post 40 is erected from the center of the base 41. A male screw portion 42 is provided on the outer peripheral surface of the pole column portion 40.
図１および図３に示すように、正極端子３０および負極端子３１の基部４１には、樹脂製の端子カバー５０が装着されている。また、基部４１の上にはＯリング５１が極柱部４０を取り囲む状態に設けられている。端子カバー５０により、ケース１１の蓋体１３と正極端子３０および負極端子３１が電気的に絶縁されているとともに、ケース本体１２と、正極端子３０および負極端子３１とが電気的に絶縁されている。さらに、端子カバー５０により、電極組立体２０と正極端子３０および負極端子３１とが電気的に絶縁されている。 As shown in FIGS. 1 and 3, a resin terminal cover 50 is attached to the base 41 of the positive electrode terminal 30 and the negative electrode terminal 31. Further, an O-ring 51 is provided on the base portion 41 so as to surround the pole column portion 40. The terminal cover 50 electrically insulates the lid 13 of the case 11 from the positive terminal 30 and the negative terminal 31, and electrically insulates the case body 12 from the positive terminal 30 and the negative terminal 31. . Furthermore, the electrode assembly 20 is electrically insulated from the positive electrode terminal 30 and the negative electrode terminal 31 by the terminal cover 50.
正極端子３０および負極端子３１の極柱部４０は、ケース１１の内部から蓋体１３の透孔１４を貫通して蓋体１３の上方に突出（露出）している。透孔１４の内周面と、極柱部４０の外周面とは、絶縁部材５２によって絶縁されている。絶縁部材５２は、筒状部５３と、この筒状部５３の軸方向一端縁に設けられたフランジ部５４を有する。筒状部５３は、透孔１４の内周面と極柱部４０の外周面との間に介装されている。フランジ部５４は、ケース１１の蓋体１３の外面に接している。 The pole column portions 40 of the positive electrode terminal 30 and the negative electrode terminal 31 protrude (exposure) from the inside of the case 11 through the through hole 14 of the lid body 13 and above the lid body 13. The inner peripheral surface of the through hole 14 and the outer peripheral surface of the pole column part 40 are insulated by an insulating member 52. The insulating member 52 has a cylindrical portion 53 and a flange portion 54 provided at one end edge in the axial direction of the cylindrical portion 53. The cylindrical portion 53 is interposed between the inner peripheral surface of the through hole 14 and the outer peripheral surface of the polar column portion 40. The flange portion 54 is in contact with the outer surface of the lid 13 of the case 11.
正極端子３０の極柱部４０の雄ねじ部４２にはナット５５が螺合されている。同様に、負極端子３１の極柱部４０の雄ねじ部４２にはナット５６が螺合されている。ケース１１の蓋体１３の外面と、ナット５５，５６との間には、絶縁部材５２のフランジ部５４が挟圧され、フランジ部５４によってナット５５，５６と蓋体１３が絶縁されている。また、ナット５５，５６と基部４１との間に、絶縁部材５２のフランジ部５４、ケース１１の蓋体１３、Ｏリング５１および端子カバー５０が狭圧されるとともに正極端子３０および負極端子３１がケース１１の蓋体１３に固定されている。 A nut 55 is screwed into the male thread portion 42 of the pole column portion 40 of the positive electrode terminal 30. Similarly, a nut 56 is screwed into the male thread portion 42 of the pole column portion 40 of the negative electrode terminal 31. The flange portion 54 of the insulating member 52 is sandwiched between the outer surface of the lid 13 of the case 11 and the nuts 55 and 56, and the nuts 55 and 56 and the lid 13 are insulated by the flange portion 54. Further, between the nuts 55 and 56 and the base portion 41, the flange portion 54 of the insulating member 52, the lid 13 of the case 11, the O-ring 51 and the terminal cover 50 are narrowed, and the positive terminal 30 and the negative terminal 31 are It is fixed to the lid 13 of the case 11.
このようにして、円柱状をなす正負の電極端子（３０，３１）が蓋体１３から突出して端子３０，３１の外周面に形成された雄ねじ部４２にナット５５，５６が螺入されて蓋体１３に締結されている。 Thus, the positive and negative electrode terminals (30, 31) having a cylindrical shape protrude from the lid body 13 and the nuts 55, 56 are screwed into the male screw portions 42 formed on the outer peripheral surfaces of the terminals 30, 31, and the lid Fastened to the body 13.
正極端子３０および負極端子３１の極柱部４０は、凹部４７を有する。凹部４７は、ねじ溝が形成された雌ねじ穴４３と、その上方にて、ねじ溝が形成されず、雌ねじ穴４３より大径の大径孔部４８よりなる。図３，４に示すように、凹部４７は、極柱部４０の上面中央部において開口し、極柱部４０の軸方向に所定の深さとなっている。また、図３，４に示すように、正極端子３０および負極端子３１の極柱部４０は切欠き４４，４５を有する。切欠き４４，４５は、極柱部４０の上面において凹部４７の外周面からＸ方向に連続して延びるようにして開口し、本実施形態では、極柱部４０の軸方向に大径孔部４８とほぼ同じ深さとなっている。大径孔部４８と切欠き４４，４５により嵌合穴４６が構成され、図３に示すように、嵌合穴４６は正極端子３０および負極端子３１の極柱部４０における蓋体１３から突出する部位の先端に形成されている。そして、図５に示すように、嵌合穴４６に対しシャフト７８，７９を挿入することにより端子３０，３１を回り止めすることができる。 The pole column portions 40 of the positive electrode terminal 30 and the negative electrode terminal 31 have a recess 47. The recess 47 includes a female screw hole 43 in which a screw groove is formed, and a large-diameter hole portion 48 having a diameter larger than that of the female screw hole 43 without being provided with a screw groove. As shown in FIGS. 3 and 4, the recess 47 opens at the center of the upper surface of the pole column 40 and has a predetermined depth in the axial direction of the pole column 40. As shown in FIGS. 3 and 4, the pole column portions 40 of the positive electrode terminal 30 and the negative electrode terminal 31 have notches 44 and 45. The notches 44 and 45 open on the upper surface of the pole column 40 so as to continuously extend from the outer peripheral surface of the recess 47 in the X direction. In this embodiment, the notches 44 and 45 are large-diameter holes in the axial direction of the pole column 40. It is almost the same depth as 48. The large-diameter hole portion 48 and the notches 44 and 45 constitute a fitting hole 46, and the fitting hole 46 projects from the lid body 13 in the pole column portion 40 of the positive electrode terminal 30 and the negative electrode terminal 31 as shown in FIG. It is formed at the tip of the part to do. Then, as shown in FIG. 5, the terminals 30 and 31 can be prevented from rotating by inserting shafts 78 and 79 into the fitting holes 46.
次に、図６〜１３を用いて電極端子の組付のための二次電池の製造装置（治具）について説明する。
図７に示すように、二次電池の製造装置（治具）６０は、下側構造体６１と上側構造体６２とを備える。
Next, a secondary battery manufacturing apparatus (jig) for assembling electrode terminals will be described with reference to FIGS.
As shown in FIG. 7, the secondary battery manufacturing apparatus (jig) 60 includes a lower structure 61 and an upper structure 62.
下側構造体６１は、長方形の板状をなし、水平方向に延びている。そして、Ｙ方向に延びる台座ブロック７０を備え、台座ブロック７０は、角柱状をなし、下側構造体６１の上面におけるＸ方向での端部に設けられている。さらに、台座ブロック７０の両端には、上側構造体６２を支持するための支柱部７１，７２が配置されている。支柱部７１，７２は、断面略コ字状をなし、コ字状の開口を台座ブロック７０側（内側）に向けるように配置され、上下方向（Ｚ軸方向）に延びるように固定されている。下側構造体６１の上面には、図８に示すように、電極組立体２０等が配置される。 The lower structure 61 has a rectangular plate shape and extends in the horizontal direction. A pedestal block 70 extending in the Y direction is provided, and the pedestal block 70 has a prismatic shape and is provided at an end portion in the X direction on the upper surface of the lower structure 61. Further, support columns 71 and 72 for supporting the upper structure 62 are disposed at both ends of the pedestal block 70. The column portions 71 and 72 have a substantially U-shaped cross section, are arranged so that the U-shaped opening faces the pedestal block 70 side (inner side), and are fixed so as to extend in the vertical direction (Z-axis direction). . As shown in FIG. 8, the electrode assembly 20 and the like are arranged on the upper surface of the lower structure 61.
図７に示すように、上側構造体６２は、台座ブロック７０の上方に位置する可動ブロック７３と、可動ブロック７３より下方向に延びるシャフト７８，７９を有している。シャフト７８，７９は、本発明における棒材をなす。可動ブロック７３の両端には、可動ブロック７３を上下方向に摺動可能に支持するための摺動部材７４，７５が設けられている。摺動部材７４，７５は、断面略四角形にて上下方向に延びる摺動部７４ａ，７５ａを備える。この摺動部７４ａ，７５ａが、支柱部７１，７２のコ字状開口の内側に配置され、上下方向に摺動可能とされている。 As shown in FIG. 7, the upper structure 62 includes a movable block 73 positioned above the pedestal block 70 and shafts 78 and 79 extending downward from the movable block 73. The shafts 78 and 79 form a bar in the present invention. Sliding members 74 and 75 for supporting the movable block 73 so as to be slidable in the vertical direction are provided at both ends of the movable block 73. The sliding members 74 and 75 are provided with sliding portions 74a and 75a that have a substantially square cross section and extend in the vertical direction. The sliding portions 74a and 75a are disposed inside the U-shaped openings of the support column portions 71 and 72 and are slidable in the vertical direction.
台座ブロック７０の上面には、図８に示すように、蓋体１３、端子３０，３１、ナット５５，５６等が配置される。
図７に示すように、上側構造体６２は、支柱部７１における上面から支柱部７２に向かって直線的に延びる摺動部材７４が設けられている。可動ブロック７３は、摺動部材７４に係合する係合部７６を有し、摺動部材７４と係合部７６とは係合した状態で上下方向（Ｚ方向）にスライドできるようになっている。同様に、上側構造体６２は、支柱部７２における上面から支柱部７１に向かって直線的に延びる摺動部材７５が設けられている。可動ブロック７３は、摺動部材７５に係合する係合部７７を有し、摺動部材７５と係合部７７とは係合した状態で上下方向（Ｚ方向）にスライドできるようになっている。よって、可動ブロック７３はＹ方向の両端を支持された状態で上下に移動することができる。
On the upper surface of the pedestal block 70, as shown in FIG. 8, a lid 13, terminals 30, 31, nuts 55, 56, and the like are arranged.
As shown in FIG. 7, the upper structure 62 is provided with a sliding member 74 that linearly extends from the upper surface of the support column 71 toward the support column 72. The movable block 73 has an engaging portion 76 that engages with the sliding member 74, and can slide in the vertical direction (Z direction) with the sliding member 74 and the engaging portion 76 engaged. Yes. Similarly, the upper structure 62 is provided with a sliding member 75 that linearly extends from the upper surface of the support column 72 toward the support column 71. The movable block 73 has an engaging portion 77 that engages with the sliding member 75, and can slide in the vertical direction (Z direction) with the sliding member 75 and the engaging portion 77 engaged. Yes. Therefore, the movable block 73 can move up and down with both ends in the Y direction being supported.
可動ブロック７３においてＹ方向に離間した位置に一対のシャフト７８，７９が下方に延びるように配置されている。棒材としてのシャフト７８，７９は、同一構成をなし、図１０に示すように棒部８０と、棒部８０の上端に設けたヘッド８１を有している。棒部８０は、端子の嵌合穴４６と嵌合するように円柱部８２と羽根部８３，８４を有する。羽根部８３，８４は板状をなす。円柱部８２の外面から羽根部８３，８４が外径側（Ｘ方向）に延びている。２枚の羽根部８３，８４は、円柱部８２に対し１８０度間隔で設けられており、その厚み方向に、オフセットされて配置されている。図１１，１２に示すように、２枚の羽根部８３，８４はシャフト７８，７９の中心Ｏに対し点対称となっている。切欠き４４，４５の中心を通る線Ｌ１はシャフト７８，７９の中心Ｏを通り、各羽根部８３，８４の中心を通る線Ｌ２，Ｌ３はシャフト７８，７９の中心Ｏから離間しており、シャフト７８，７９の中心Ｏを通らない。 A pair of shafts 78 and 79 are arranged at positions spaced apart in the Y direction in the movable block 73 so as to extend downward. The shafts 78 and 79 as rod members have the same configuration, and have a rod portion 80 and a head 81 provided at the upper end of the rod portion 80 as shown in FIG. The rod portion 80 has a cylindrical portion 82 and blade portions 83 and 84 so as to be fitted into the fitting holes 46 of the terminals. The blade parts 83 and 84 are plate-shaped. The blade portions 83 and 84 extend from the outer surface of the cylindrical portion 82 to the outer diameter side (X direction). The two blade portions 83 and 84 are provided at an interval of 180 degrees with respect to the cylindrical portion 82, and are arranged offset in the thickness direction. As shown in FIGS. 11 and 12, the two blade portions 83 and 84 are point-symmetric with respect to the center O of the shafts 78 and 79. A line L1 passing through the centers of the notches 44 and 45 passes through the center O of the shafts 78 and 79, and lines L2 and L3 passing through the centers of the blade portions 83 and 84 are separated from the center O of the shafts 78 and 79. It does not pass through the center O of the shafts 78 and 79.
図１１に示すように、ナット５５，５６の締め付け時に端子３０，３１を回り止めすべくシャフト７８，７９が嵌合穴４６に挿入された状態において、ナット締結方向でのシャフト７８，７９と嵌合穴４６によって形成された壁面４４ａ，４５ａとの間に隙間Ｇ１，Ｇ２を有する。また、反ナット締結方向でのシャフト７８，７９と嵌合穴４６によって形成された壁面４４ｂ，４５ｂとが面接触している。 As shown in FIG. 11, in the state where the shafts 78 and 79 are inserted into the fitting holes 46 so as to prevent the terminals 30 and 31 from rotating when the nuts 55 and 56 are tightened, they are fitted to the shafts 78 and 79 in the nut fastening direction. There are gaps G1, G2 between the wall surfaces 44a, 45a formed by the joint hole 46. Further, the shafts 78 and 79 in the anti-nut fastening direction and the wall surfaces 44b and 45b formed by the fitting holes 46 are in surface contact.
詳しく説明する。
図１１に示すように、羽根部８３は一方の壁面８３ａと他方の壁面８３ｂを有し、羽根部８４は一方の壁面８４ａと他方の壁面８４ｂを有する。切欠き４４は一方の壁面４４ａと他方の壁面４４ｂを有し、切欠き４５は一方の壁面４５ａと他方の壁面４５ｂを有する。ナット締結方向（反時計回り方向）に対し、羽根部８３は壁面８３ａが上流側、壁面８３ｂが下流側となっている。ナット締結方向（反時計回り方向）に対し、羽根部８４は壁面８４ａが上流側、壁面８４ｂが下流側となっている。ナット締結方向（反時計回り方向）に対し、切欠き４４は壁面４４ｂが下流側、壁面４４ａが上流側となっている。ナット締結方向（反時計回り方向）に対し、切欠き４５は壁面４５ｂが下流側、壁面４５ａが上流側となっている。そして、羽根部８３，８４と切欠き４４，４５との間の隙間として、羽根部（板部）８３，８４の両面（壁面８３ａ，８３ｂ，８４ａ，８４ｂ）のうちの片側の面（壁面８３ａ，８４ａ）に絞って隙間Ｇ１，Ｇ２を設けている。詳しくは、羽根部（板部）８３，８４の両面（壁面８３ａ，８３ｂ，８４ａ，８４ｂ）のうちのナット５５，５６を締めて力が加わる側の面（壁面８３ｂ，８４ｂ）は隙間を無くし、反対側の面（壁面８３ａ，８４ａ）は隙間Ｇ１，Ｇ２を設けている。
explain in detail.
As shown in FIG. 11, the blade portion 83 has one wall surface 83a and the other wall surface 83b, and the blade portion 84 has one wall surface 84a and the other wall surface 84b. The notch 44 has one wall surface 44a and the other wall surface 44b, and the notch 45 has one wall surface 45a and the other wall surface 45b. With respect to the nut fastening direction (counterclockwise direction), the blade 83 has a wall surface 83a on the upstream side and a wall surface 83b on the downstream side. With respect to the nut fastening direction (counterclockwise direction), the blade portion 84 has the wall surface 84a on the upstream side and the wall surface 84b on the downstream side. With respect to the nut fastening direction (counterclockwise direction), the notch 44 has a wall surface 44b on the downstream side and a wall surface 44a on the upstream side. With respect to the nut fastening direction (counterclockwise direction), the notch 45 has a wall surface 45b on the downstream side and a wall surface 45a on the upstream side. And as a clearance gap between the blade | wing parts 83 and 84 and the notches 44 and 45, one side surface (wall surface 83a) of both surfaces (wall surface 83a, 83b, 84a, 84b) of blade | wing part (plate part) 83,84. , 84a), gaps G1 and G2 are provided. Specifically, the surfaces (wall surfaces 83b, 84b) on which the force is applied by tightening the nuts 55, 56 of both surfaces (wall surfaces 83a, 83b, 84a, 84b) of the blade portions (plate portions) 83, 84 eliminate gaps. The opposite surfaces (wall surfaces 83a, 84a) are provided with gaps G1, G2.
これにより、端子３０，３１の受け面の隙間を無くすとともに、受け面の裏面には隙間Ｇ１，Ｇ２を設けることによって、シャフト７９を嵌合穴４６に差し込みやすく、かつ位置精度もだすことができる。 As a result, the clearance between the receiving surfaces of the terminals 30 and 31 is eliminated, and the clearances G1 and G2 are provided on the back surface of the receiving surface, so that the shaft 79 can be easily inserted into the fitting hole 46 and the positional accuracy can be improved. .
図１０に示すように、シャフト７８，７９のヘッド８１は、全体形状として角柱状をなし、外周面には平行な平面８５，８６を有している。
図７に示すように、シャフト７８は可動ブロック７３に移動不能に固着されている。これに対し、シャフト７９は可動ブロック７３に対してガタがある状態で支持されている。また、可動ブロック７３の上面におけるシャフト７９の配置箇所にはＵ字ブロック９０がねじ止めされている。そして、押圧装置９１によりシャフト７９がＹ方向での外側に押圧されることにより移動不能にロックされる。
As shown in FIG. 10, the heads 81 of the shafts 78 and 79 have a prismatic shape as a whole, and have parallel planes 85 and 86 on the outer peripheral surface.
As shown in FIG. 7, the shaft 78 is fixed to the movable block 73 so as not to move. On the other hand, the shaft 79 is supported with a backlash with respect to the movable block 73. Further, a U-shaped block 90 is screwed to an arrangement position of the shaft 79 on the upper surface of the movable block 73. Then, the shaft 79 is pressed against the outer side in the Y direction by the pressing device 91 so as to be immovably locked.
押圧装置９１を、図９を用いて説明する。
押圧装置９１は、押圧ロッド９２と、ロッド支持部材９３と、ロッド案内部材９４と、円弧型アーム９５と、操作レバー９６を有している。Ｕ字ブロック９０で囲まれた空間にシャフト７９の上端のヘッド８１が位置している。押圧ロッド９２の先端側は、Ｕ字ブロック９０で囲まれた空間に配置されている。ロッド支持部材９３は可動ブロック７３の上面に固定されている。ロッド案内部材９４はロッド支持部材９３に固定されており、ロッド案内部材９４には押圧ロッド９２が貫通する状態で摺動可能に支持されている。押圧ロッド９２の基端は円弧型アーム９５の一端と回動可能に連結されている。操作レバー９６の一端の回動軸９６ａは可動ブロック７３に回動可能に支持されている。円弧型アーム９５の他端が操作レバー９６に回動可能に連結されている。
The pressing device 91 will be described with reference to FIG.
The pressing device 91 includes a pressing rod 92, a rod support member 93, a rod guide member 94, an arc-shaped arm 95, and an operation lever 96. A head 81 at the upper end of the shaft 79 is located in a space surrounded by the U-shaped block 90. The distal end side of the pressing rod 92 is disposed in a space surrounded by the U-shaped block 90. The rod support member 93 is fixed to the upper surface of the movable block 73. The rod guide member 94 is fixed to a rod support member 93, and the rod guide member 94 is slidably supported in a state in which the pressing rod 92 passes therethrough. The proximal end of the pressing rod 92 is rotatably connected to one end of the arc-shaped arm 95. A rotation shaft 96a at one end of the operation lever 96 is supported by the movable block 73 so as to be rotatable. The other end of the arc-shaped arm 95 is rotatably connected to the operation lever 96.
そして、操作レバー９６が図９および図６（ａ）に示すようにＸ方向に延びる位置においては押圧ロッド９２が最も伸長した状態となる。これに対し、図６（ｂ）に示すように、操作レバー９６を斜めにすると、押圧ロッド９２が収縮した状態となる。つまり、図６（ｂ）に示す操作レバー９６を斜めにした状態ではシャフト７９のヘッド８１はＵ字ブロック９０の壁面との間に隙間があることによりガタがある状態となる。このガタがある状態から、図６（ａ）に示す操作レバー９６がＸ方向を向くように回動すると、シャフト７９のヘッド８１はＵ字ブロック９０の壁面９０ａに押圧されて移動不能に固定され、位置決めされる。 Then, as shown in FIGS. 9 and 6A, the pressing rod 92 is in the most extended state at the position where the operating lever 96 extends in the X direction. On the other hand, as shown in FIG. 6B, when the operation lever 96 is inclined, the pressing rod 92 is contracted. That is, in the state where the operation lever 96 shown in FIG. 6B is inclined, the head 81 of the shaft 79 is in a loose state due to a gap between it and the wall surface of the U-shaped block 90. When the operation lever 96 shown in FIG. 6A is rotated so as to face in the X direction from this loose state, the head 81 of the shaft 79 is pressed against the wall surface 90a of the U-shaped block 90 and fixed so as not to move. Is positioned.
次に、電極端子の組付工程について説明する。
図１等に示す電極組立体２０のタブ２３，２４が導電部材２６，２８に溶接されるとともに導電部材２６，２８に端子３０，３１が溶接され、さらに、端子３０，３１には端子カバー５０およびＯリング５１が装着される。また、蓋体１３の透孔１４には絶縁部材５２が装着される。
Next, the assembly process of the electrode terminal will be described.
The tabs 23 and 24 of the electrode assembly 20 shown in FIG. 1 and the like are welded to the conductive members 26 and 28, the terminals 30 and 31 are welded to the conductive members 26 and 28, and the terminal cover 50 is connected to the terminals 30 and 31. And an O-ring 51 is mounted. An insulating member 52 is attached to the through hole 14 of the lid 13.
この状態から、図６（ｂ）に示すように、二次電池の製造装置（治具）６０における下側構造体６１の上面に、電極組立体２０に蓋体１３を９０度開いた状態で載せるとともに上側構造体６２の台座ブロック７０に、蓋体１３、端子３０，３１、端子カバー５０、ナット５５，５６を配置する。 From this state, as shown in FIG. 6B, the lid 13 is opened 90 degrees on the electrode assembly 20 on the upper surface of the lower structure 61 in the secondary battery manufacturing apparatus (jig) 60. The lid 13, the terminals 30 and 31, the terminal cover 50, and the nuts 55 and 56 are disposed on the pedestal block 70 of the upper structure 62.
次に、可動ブロック７３を上下動させ、シャフト７８，７９の棒部８０を端子３０，３１の嵌合穴４６に挿入する。このとき、端子３０，３１の嵌合穴４６に２本のシャフト７８，７９を差し込むが、一方のシャフト７９はガタがあるが、以下のようにしてセット後にガタを無くすようにロックされる。 Next, the movable block 73 is moved up and down, and the rod portions 80 of the shafts 78 and 79 are inserted into the fitting holes 46 of the terminals 30 and 31. At this time, the two shafts 78 and 79 are inserted into the fitting holes 46 of the terminals 30 and 31, but one shaft 79 has a backlash, but is locked to eliminate the backlash after setting as follows.
図６（ｂ）に示す状態から、図６（ａ）に示すように操作レバー９６を手前に回動し、押圧ロッド９２をシャフト７９のヘッド８１に押し込む。これにより、シャフト７９が外側に押圧されて固定される。つまり、外方向の力が加わり、今までガタがあった状態からガタが無くなり回り止めできるともに位置決めできる。 From the state shown in FIG. 6B, the operation lever 96 is rotated forward as shown in FIG. 6A, and the pressing rod 92 is pushed into the head 81 of the shaft 79. As a result, the shaft 79 is pressed outward and fixed. In other words, an outward force is applied, and the backlash is eliminated from the state where the backlash has been present so far, so that the rotation can be stopped and positioning can be performed.
次に、作用について説明する。
製造工程において、端子３０，３１の嵌合穴４６にシャフト７８，７９を入れる。このとき、シャフト７９においては図１３に示すように、端子３１の嵌合穴４６における切欠き４４，４５の延設方向であるＸ方向に対し羽根部８３，８４が斜めに入る。つまり、完全には当らない状態では少し傾けた状態で嵌合穴４６に入れることにより比較的挿入しやすくなる。
Next, the operation will be described.
In the manufacturing process, shafts 78 and 79 are inserted into the fitting holes 46 of the terminals 30 and 31. At this time, in the shaft 79, as shown in FIG. 13, the blade portions 83 and 84 enter obliquely with respect to the X direction which is the extending direction of the notches 44 and 45 in the fitting hole 46 of the terminal 31. That is, when it is not completely in contact, it is relatively easy to insert by inserting it into the fitting hole 46 in a slightly inclined state.
その後、操作レバー９６の回動操作により押さえられることによって、図１１に示すように、シャフト７９の羽根部８３，８４が真っ直ぐになる。このように、シャフト７９の羽根部８３，８４の角度をＸ方向に真っ直ぐにすると、シャフト７９の羽根部８３，８４の一面（壁面８３ｂ，８４ｂ）が嵌合穴４６の切欠き４４，４５の壁面４４ｂ，４５ｂに面接触して位置決めされる。 Thereafter, the blades 83 and 84 of the shaft 79 are straightened by being pressed by the turning operation of the operation lever 96, as shown in FIG. As described above, when the angle of the blade portions 83 and 84 of the shaft 79 is straightened in the X direction, one surface (wall surfaces 83b and 84b) of the blade portions 83 and 84 of the shaft 79 is formed between the notches 44 and 45 of the fitting hole 46. Positioned in surface contact with the wall surfaces 44b and 45b.
また、ナット５５，５６の締め付けの際にも、羽根部８３，８４が切欠き４４，４５の延設方向であるＸ方向に対し斜めであってもシャフト７９の羽根部８３，８４の一面（壁面８３ｂ，８４ｂ）が嵌合穴４６の切欠き４４，４５の壁面４４ｂ，４５ｂに自然に当るようになる。 Even when the nuts 55 and 56 are tightened, even if the blade portions 83 and 84 are inclined with respect to the X direction, which is the extending direction of the notches 44 and 45, one surface of the blade portions 83 and 84 of the shaft 79 ( The wall surfaces 83b and 84b) naturally come into contact with the wall surfaces 44b and 45b of the notches 44 and 45 of the fitting hole 46.
図１４，１５は比較のための図である。図１１でのシャフト７９の壁面８３ａ，８３ｂ，８４ａ，８４ｂと嵌合穴４６の内面（壁面４４ａ，４４ｂ，４５ａ，４５ｂ）について、図１５に示すように、ガタ（隙間）が無い方が精度よく位置決めできるが、ガタ（隙間）がないと、シャフト７９を嵌合穴４６に差し込みにくい。逆に、シャフト７９の壁面８３ａ，８３ｂ，８４ａ，８４ｂと嵌合穴４６の内面（壁面４４ａ，４４ｂ，４５ａ，４５ｂ）とは、図１４に示すように両方に隙間があると、シャフト７９を嵌合穴４６に差し込みやすいが、両方向にガタがついてしまい精度良く位置決めできない。 14 and 15 are diagrams for comparison. As shown in FIG. 15, it is more accurate for the wall surfaces 83a, 83b, 84a, 84b of the shaft 79 and the inner surfaces (wall surfaces 44a, 44b, 45a, 45b) of the fitting hole 46 in FIG. Although it can be positioned well, it is difficult to insert the shaft 79 into the fitting hole 46 if there is no backlash (gap). Conversely, if there is a gap between the wall surfaces 83a, 83b, 84a, 84b of the shaft 79 and the inner surface (wall surfaces 44a, 44b, 45a, 45b) of the fitting hole 46 as shown in FIG. Although it is easy to insert into the fitting hole 46, backlash occurs in both directions and positioning cannot be performed with high accuracy.
つまり、図１４に示すように、シャフト（端子回り止め用棒材）７８，７９における羽根部８３，８４と端子３０，３１の嵌合穴の切欠き４４，４５との間にガタがあると、組み付け精度が悪い。その対策として、図１５に示すように、シャフト（端子回り止め用棒材）７８，７９における羽根部８３，８４と端子３０，３１の嵌合穴の切欠き４４，４５との間のガタを無くすようにシャフト７８，７９における羽根部８３，８４と端子３０，３１の嵌合穴の切欠き４４，４５とを密着させる。すると、シャフト７８，７９における羽根部８３，８４の嵌合穴の切欠き４４，４５への組み付け精度は上がるが、シャフト７８，７９における羽根部８３，８４を嵌合穴の切欠き４４，４５に挿入しづらくなる。 That is, as shown in FIG. 14, if there is a backlash between the blade portions 83, 84 on the shafts (terminal detent bars) 78, 79 and the notches 44, 45 of the fitting holes of the terminals 30, 31. The assembly accuracy is bad. As a countermeasure, as shown in FIG. 15, the backlash between the blade portions 83 and 84 on the shafts (terminal detent bars) 78 and 79 and the notches 44 and 45 of the fitting holes of the terminals 30 and 31 is removed. The vanes 83 and 84 of the shafts 78 and 79 and the notches 44 and 45 of the fitting holes of the terminals 30 and 31 are brought into close contact with each other so as to be eliminated. Then, the accuracy of assembling the blades 83 and 84 of the blades 83 and 84 in the shafts 78 and 79 into the notches 44 and 45 increases, but the blades 83 and 84 of the shafts 78 and 79 are not cut into the holes 44 and 45 of the fitting holes. It becomes difficult to insert into.
このように、本実施形態は、治具のシャフト７９（又はシャフト７８）の断面形状を改良することにより、回り止め用のシャフトの形状として好適なものとなる。
上記実施形態によれば、以下のような効果を得ることができる。
As described above, the present embodiment is suitable as the shape of the shaft for preventing rotation by improving the cross-sectional shape of the shaft 79 (or shaft 78) of the jig.
According to the above embodiment, the following effects can be obtained.
（１）ナット５５，５６の締め付け時に端子３０，３１を回り止めすべくシャフト７８，７９が嵌合穴４６に挿入された状態において、ナット締結方向でのシャフト７８，７９と嵌合穴４６によって形成された壁面４４ａ，４５ａとの間に隙間Ｇ１，Ｇ２を有する。また、反ナット締結方向でのシャフト７８，７９と嵌合穴４６によって形成された壁面４４ｂ，４５ｂとを面接触させた。 (1) When the shafts 78 and 79 are inserted into the fitting holes 46 so as to prevent the terminals 30 and 31 from rotating when the nuts 55 and 56 are tightened, the shafts 78 and 79 and the fitting holes 46 in the nut fastening direction are used. There are gaps G1 and G2 between the formed wall surfaces 44a and 45a. Further, the shafts 78 and 79 in the anti-nut fastening direction and the wall surfaces 44b and 45b formed by the fitting holes 46 are brought into surface contact.
これによれば、ナット５５，５６の締め付け時において、端子３０，３１を回り止めすべくシャフト７８，７９が嵌合穴４６に挿入される状態において、ナット締結方向でのシャフト７８，７９と嵌合穴４６によって形成された壁面４４ａ，４４ｂとの間に隙間Ｇ１，Ｇ２を有するので、端子３０，３１をケースの蓋体１３に締結する際において端子３０，３１の回り止め用のシャフト７８，７９の嵌合穴４６への組付性に優れる。また、反ナット締結方向でのシャフト７８，７９と嵌合穴４６によって形成された壁面４４ｂ，４５ｂとが面接触するので、がたつきを抑え、高精度な位置決めを行うことができる。よって、端子３０，３１をケースの蓋体１３に締結する際において端子３０，３１の回り止め用のシャフト７８，７９の嵌合穴４６への組付性と高精度な位置決めを両立することができる。 According to this, when the nuts 55 and 56 are tightened, the shafts 78 and 79 are fitted in the nut fastening direction in a state where the shafts 78 and 79 are inserted into the fitting holes 46 so as to prevent the terminals 30 and 31 from rotating. Since the gaps G1 and G2 are provided between the wall surfaces 44a and 44b formed by the joint hole 46, when the terminals 30 and 31 are fastened to the lid 13 of the case, a shaft 78 for preventing rotation of the terminals 30 and 31, Excellent assembly to 79 fitting holes 46. Further, since the shafts 78 and 79 in the anti-nut fastening direction and the wall surfaces 44b and 45b formed by the fitting holes 46 are in surface contact with each other, it is possible to suppress rattling and perform highly accurate positioning. Therefore, when the terminals 30 and 31 are fastened to the lid 13 of the case, it is possible to achieve both assembling property of the terminals 30 and 31 to the fitting holes 46 of the shafts 78 and 79 for preventing rotation and high-precision positioning. it can.
（２）シャフト７８，７９は、円柱部８２と、円柱部８２の外面から外径側に延びる板状の羽根部８３，８４を有する。２枚の羽根部８３，８４は円柱部８２に対し１８０度間隔で設けられている。端子３０，３１は、羽根部８３，８４に対応する切欠き４４，４５と、円柱部８２に対応する大径孔部４８を有し、大径孔部４８の中心を通る直線Ｌ１は、シャフト７８，７９の中心Ｏを通る。これにより、円柱部８２と大径孔部４８が嵌合することで、シャフト７８，７９と端子３０，３１の中心位置を容易に合わせることができる。よって、シャフト７８，７９を、切欠き４４，４５が延びる方向において適切な位置に配置でき、ナットの締結時に端子３０，３１に回転方向の力が作用しても、がたつくことが無く、端子３０，３１を安定して支持することができる。 (2) The shafts 78 and 79 have a cylindrical part 82 and plate-like blade parts 83 and 84 extending from the outer surface of the cylindrical part 82 to the outer diameter side. The two blade portions 83 and 84 are provided at an interval of 180 degrees with respect to the cylindrical portion 82. The terminals 30 and 31 have notches 44 and 45 corresponding to the blade portions 83 and 84 and a large-diameter hole portion 48 corresponding to the cylindrical portion 82. A straight line L1 passing through the center of the large-diameter hole portion 48 is a shaft It passes through the center O of 78,79. Thereby, the center positions of the shafts 78 and 79 and the terminals 30 and 31 can be easily matched by fitting the cylindrical portion 82 and the large-diameter hole 48. Therefore, the shafts 78 and 79 can be arranged at appropriate positions in the direction in which the notches 44 and 45 extend, and even if a rotational force is applied to the terminals 30 and 31 when the nuts are fastened, the shafts 30 and 79 are not rattled. , 31 can be stably supported.
（３）円柱状部材としての端子３０，３１の頂面に形成された凹溝としての切欠き４４，４５と係合し、回り止めを行う製造装置として、切欠き４４，４５に挿入される棒材としてのシャフト７８，７９を有し、シャフト７８，７９は、切欠き４４，４５に沿って延びる少なくとも二枚の羽根部８３，８４を備え、二枚の羽根部８３，８４は、その厚み方向に相互にオフセットして配置されている。これにより、回り止めすべく端子３０，３１の頂面に形成された切欠き４４，４５にシャフト７８，７９が挿入される。シャフト７８，７９は、切欠き４４，４５に沿って延びる少なくとも二枚の羽根部８３，８４が備えられ、二枚の羽根部８３，８４は、その厚み方向に相互にオフセットして配置されているので、回り止め用のシャフト７８，７９の切欠き４４，４５への組付性に優れるとともに高精度な位置決めを行うことができる。よって、回り止め用のシャフト７８，７９の切欠き４４，４５への組付性と高精度な位置決めを両立することができる。 (3) Inserted into the notches 44 and 45 as a manufacturing device that engages with the notches 44 and 45 as concave grooves formed on the top surfaces of the terminals 30 and 31 as columnar members to prevent rotation. It has shafts 78 and 79 as rods, and the shafts 78 and 79 include at least two blade portions 83 and 84 extending along the notches 44 and 45, and the two blade portions 83 and 84 are They are arranged offset from each other in the thickness direction. Thus, the shafts 78 and 79 are inserted into the notches 44 and 45 formed on the top surfaces of the terminals 30 and 31 to prevent rotation. The shafts 78 and 79 are provided with at least two blade portions 83 and 84 extending along the notches 44 and 45, and the two blade portions 83 and 84 are arranged so as to be offset from each other in the thickness direction. Therefore, the non-rotating shafts 78 and 79 can be easily assembled to the notches 44 and 45 and can be positioned with high accuracy. Therefore, it is possible to achieve both the assembling property of the shafts 78 and 79 for preventing rotation to the notches 44 and 45 and the highly accurate positioning.
（４）ここで、シャフト７８，７９は円柱部８２を備え、二枚の羽根部８３，８４は、円柱部８２より反対方向に延びている。よって、端子３０，３１に回転方向の力が作用しても、がたつくことが無く、端子３０，３１を安定して支持することができる。 (4) Here, the shafts 78 and 79 are provided with a cylindrical portion 82, and the two blade portions 83 and 84 extend in the opposite direction from the cylindrical portion 82. Therefore, even if a rotational force is applied to the terminals 30 and 31, the terminals 30 and 31 can be stably supported without rattling.
実施形態は前記に限定されるものではなく、例えば、次のように具体化してもよい。
・治具の羽根の数は「２」であったが、これに限ることはない。
・シャフト（７８，７９）は、円柱部８２と、円柱部８２の外面から外径側に延びる板状の羽根部８３，８４を有する構成としたが、円柱部８２は芯出しのために設けたものであり、円柱部８２が無い構成としてもよい。
The embodiment is not limited to the above, and may be embodied as follows, for example.
・ The number of jig blades was "2", but this is not a limitation.
The shaft (78, 79) has a cylindrical portion 82 and plate-like blade portions 83, 84 extending from the outer surface of the cylindrical portion 82 to the outer diameter side. However, the cylindrical portion 82 is provided for centering. It is good also as a structure without the cylindrical part 82.
・上記実施形態では、二枚の羽根部８３，８４を厚み方向にオフセットして配置することで、嵌合後のわずかな回転で、切欠き４４，４５と羽根部８３，８４の面接触を行う構造としたが、前述の構造に限定されるものではなく、切欠き４４，４５側をオフセットして形成することで、面接触を行う構成としてもよい。 In the above embodiment, by arranging the two blade portions 83 and 84 to be offset in the thickness direction, the surface contact between the notches 44 and 45 and the blade portions 83 and 84 can be achieved with a slight rotation after fitting. However, the present invention is not limited to the above-described structure, and may be configured to make surface contact by offsetting the notches 44 and 45 side.
要は、ケース１１の蓋体１３に対し、電極組立体２０に連結された円柱状をなす正負の電極端子（端子３０，３１）を、蓋体１３から突出させた状態で、端子３０，３１の外周面に形成された雄ねじ部４２にナット５５，５６を螺入し、蓋体１３に締結する蓄電装置の製造方法として、ナット５５，５６の締め付け時に端子３０，３１を回り止めすべく、端子３０，３１における蓋体１３から突出する部位の先端に形成された嵌合穴４６に棒材としてのシャフト７８，７９を挿入し、ナット締結方向でのシャフト７８，７９と嵌合穴４６によって形成された壁面４４ａ，４５ａとの間に隙間Ｇ１，Ｇ２を形成し、反ナット締結方向でのシャフト７８，７９と嵌合穴４６によって形成された壁面４４ｂ，４５ｂとを面接触させる。よって、ナット５５，５６の締め付け時において、端子３０，３１を回り止めすべくシャフト７８，７９が嵌合穴４６に挿入される。この状態において、ナット締結方向でのシャフト７８，７９と嵌合穴４６によって形成された壁面４４ａ，４５ａとの間に隙間Ｇ１，Ｇ２が形成されるので、端子３０，３１をケース１１の蓋体１３に締結する際において端子３０，３１の回り止め用のシャフト７８，７９の嵌合穴４６への組付性に優れる。また、反ナット締結方向でのシャフト７８，７９と嵌合穴４６によって形成された壁面４４ｂ，４５ｂとが面接触するので、高精度な位置決めを行うことができる。よって、端子３０，３１をケース１１の蓋体１３に締結する際において端子３０，３１の回り止め用のシャフト７８，７９の嵌合穴４６への組付性と高精度な位置決めを両立することができる。 In short, the positive and negative electrode terminals (terminals 30 and 31) connected to the electrode assembly 20 with respect to the lid 13 of the case 11 are projected from the lid 13 and the terminals 30 and 31. As a method for manufacturing a power storage device in which nuts 55 and 56 are screwed into male screw portions 42 formed on the outer peripheral surface of the nut and fastened to the lid 13, the terminals 30 and 31 are prevented from rotating when the nuts 55 and 56 are tightened. The shafts 78 and 79 as rods are inserted into the fitting holes 46 formed at the tips of the portions of the terminals 30 and 31 protruding from the lid 13, and the shafts 78 and 79 and the fitting holes 46 in the nut fastening direction are inserted. Gap G1 and G2 are formed between the formed wall surfaces 44a and 45a, and the wall surfaces 44b and 45b formed by the shafts 78 and 79 and the fitting hole 46 in the anti-nut fastening direction are brought into surface contact. Therefore, when the nuts 55 and 56 are tightened, the shafts 78 and 79 are inserted into the fitting holes 46 so as to prevent the terminals 30 and 31 from rotating. In this state, gaps G1 and G2 are formed between the shafts 78 and 79 in the nut fastening direction and the wall surfaces 44a and 45a formed by the fitting holes 46, so that the terminals 30 and 31 are the lids of the case 11. 13 is excellent in assembling to the fitting hole 46 of the shafts 78 and 79 for preventing the rotation of the terminals 30 and 31. Further, since the shafts 78 and 79 in the anti-nut fastening direction and the wall surfaces 44b and 45b formed by the fitting holes 46 are in surface contact, highly accurate positioning can be performed. Therefore, when the terminals 30 and 31 are fastened to the lid 13 of the case 11, both the assembling property of the terminals 30 and 31 to the fitting holes 46 of the shafts 78 and 79 for preventing rotation are compatible with high-precision positioning. Can do.
・図３に代わり図１６に示す構成としてもよい、図１６において、正極端子３０および負極端子３１の極柱部４０は雌ねじ穴４３を有し、雌ねじ穴４３は、極柱部４０の上面中央部において開口し、極柱部４０の軸方向に所定の深さとなっている。正極端子３０および負極端子３１の極柱部４０は切欠き４４，４５を有し、切欠き４４，４５は、極柱部４０の上面において雌ねじ穴４３の外周面からＸ方向に連続して延びるようにして開口し、極柱部４０の軸方向に所定の深さとなっている。雌ねじ穴４３と切欠き４４，４５により嵌合穴４９が構成され、嵌合穴４９は正極端子３０および負極端子３１の極柱部４０における蓋体１３から突出する部位の先端に形成されている。嵌合穴４９に対しシャフト７８，７９を挿入することにより端子３０，３１を回り止めする。 The configuration shown in FIG. 16 may be used instead of FIG. 3. In FIG. 16, the pole column portions 40 of the positive electrode terminal 30 and the negative electrode terminal 31 have a female screw hole 43, and the female screw hole 43 is the center of the top surface of the pole column portion 40. It is opened at the portion, and has a predetermined depth in the axial direction of the pole column portion 40. The pole column portions 40 of the positive electrode terminal 30 and the negative electrode terminal 31 have notches 44 and 45, and the notches 44 and 45 continuously extend in the X direction from the outer peripheral surface of the female screw hole 43 on the upper surface of the pole column portion 40. In this way, the opening is made and a predetermined depth is formed in the axial direction of the pole column portion 40. A fitting hole 49 is formed by the female screw hole 43 and the notches 44 and 45, and the fitting hole 49 is formed at the tip of the portion protruding from the lid body 13 in the pole column portion 40 of the positive electrode terminal 30 and the negative electrode terminal 31. . By inserting the shafts 78 and 79 into the fitting holes 49, the terminals 30 and 31 are prevented from rotating.
・蓄電装置はニッケル水素二次電池や、電気二重層キャパシタとして具体化してもよい。 The power storage device may be embodied as a nickel hydride secondary battery or an electric double layer capacitor.
１０…二次電池、１１…ケース、１２…ケース本体、１３…蓋体、２０…電極組立体、３０…正極端子、３１…負極端子、４２…雄ねじ部、４４…切欠き、４４ａ…壁面、４４ｂ…壁面、４５…切欠き、４５ａ…壁面、４５ｂ…壁面、４６…嵌合穴、４９…嵌合穴、５５…ナット、５６…ナット、６０…製造装置、７８…シャフト、７９…シャフト、８２…円柱部、８３…羽根部、８４…羽根部、Ｇ１…隙間、Ｇ２…隙間、Ｌ１…直線。 DESCRIPTION OF SYMBOLS 10 ... Secondary battery, 11 ... Case, 12 ... Case main body, 13 ... Cover body, 20 ... Electrode assembly, 30 ... Positive electrode terminal, 31 ... Negative electrode terminal, 42 ... Male screw part, 44 ... Notch, 44a ... Wall surface, 44b ... Wall surface, 45 ... Notch, 45a ... Wall surface, 45b ... Wall surface, 46 ... Fitting hole, 49 ... Fitting hole, 55 ... Nut, 56 ... Nut, 60 ... Manufacturing device, 78 ... Shaft, 79 ... Shaft, 82 ... cylindrical part, 83 ... blade part, 84 ... blade part, G1 ... gap, G2 ... gap, L1 ... straight line.
Claims (8)
前記電極端子における前記蓋体から突出する部位の先端に形成された嵌合穴に挿入される棒材を備え、
前記ナットの締め付け時に前記電極端子を回り止めすべく前記棒材が前記嵌合穴に挿入された状態において、ナット締結方向での前記棒材と前記嵌合穴によって形成された壁面との間に隙間を有し、反ナット締結方向での前記棒材と前記嵌合穴によって形成された壁面とを面接触させたことを特徴とする蓄電装置の製造装置。 A case that accommodates the electrode assembly has a case body and a lid that closes the opening of the case body, and positive and negative electrode terminals having a columnar shape project from the lid body on the outer peripheral surface of the electrode terminal. A power storage device manufacturing apparatus in which a nut is screwed into a formed male screw portion and fastened to the lid,
A bar inserted into a fitting hole formed at the tip of a portion protruding from the lid in the electrode terminal;
In a state where the bar is inserted into the fitting hole to prevent the electrode terminal from rotating when the nut is tightened, the nut is clamped between the bar and the wall formed by the fitting hole. An apparatus for manufacturing a power storage device, comprising a gap, wherein the bar in the anti-nut fastening direction and a wall surface formed by the fitting hole are brought into surface contact.
前記凹溝に挿入される棒材を有し、前記棒材は、前記凹溝に沿って延びる少なくとも二枚の羽根部を備え、前記二枚の羽根部は、その厚み方向に相互にオフセットして配置されていることを特徴とする製造装置。 In the manufacturing apparatus that engages with the concave groove formed on the top surface of the cylindrical member and performs rotation prevention,
The bar has a bar inserted into the groove, and the bar includes at least two blade portions extending along the groove, and the two blade portions are offset from each other in the thickness direction. The manufacturing apparatus characterized by being arranged.
ことを特徴とする請求項６に記載の製造装置。 The manufacturing apparatus according to claim 6, wherein the bar includes a cylindrical portion, and the two blade portions extend in opposite directions from the cylindrical portion.
前記ナットの締め付け時に前記電極端子を回り止めすべく、前記電極端子における前記蓋体から突出する部位の先端に形成された嵌合穴に棒材を挿入し、
ナット締結方向での前記棒材と前記嵌合穴によって形成された壁面との間に隙間を形成し、反ナット締結方向での前記棒材と前記嵌合穴によって形成された壁面とを面接触させることを特徴とする蓄電装置の製造方法。 With the cylindrical positive and negative electrode terminals connected to the electrode assembly projecting from the lid body with respect to the case lid body, a nut is screwed into the male screw portion formed on the outer peripheral surface of the electrode terminal. A method of manufacturing a power storage device that enters and fastens to the lid,
In order to prevent the electrode terminal from rotating when the nut is tightened, a bar is inserted into the fitting hole formed at the tip of the portion protruding from the lid in the electrode terminal,
A gap is formed between the bar in the nut fastening direction and the wall formed by the fitting hole, and the bar in the anti-nut fastening direction and the wall formed by the fitting hole are in surface contact. A method for manufacturing a power storage device.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2015149193A (en) * | 2014-02-06 | 2015-08-20 | 株式会社豊田自動織機 | Manufacturing apparatus of power storage device |
| US10269502B2 (en) | 2015-08-25 | 2019-04-23 | Gs Yuasa International Ltd. | Energy storage device including a conductive member penetrating a container and a fixing member covering the conductive member |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2015149193A (en) * | 2014-02-06 | 2015-08-20 | 株式会社豊田自動織機 | Manufacturing apparatus of power storage device |
| US10269502B2 (en) | 2015-08-25 | 2019-04-23 | Gs Yuasa International Ltd. | Energy storage device including a conductive member penetrating a container and a fixing member covering the conductive member |
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