JP6575940B2 - Bagging electrode manufacturing apparatus and bagging electrode manufacturing method - Google Patents
Bagging electrode manufacturing apparatus and bagging electrode manufacturing method Download PDFInfo
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- JP6575940B2 JP6575940B2 JP2014232068A JP2014232068A JP6575940B2 JP 6575940 B2 JP6575940 B2 JP 6575940B2 JP 2014232068 A JP2014232068 A JP 2014232068A JP 2014232068 A JP2014232068 A JP 2014232068A JP 6575940 B2 JP6575940 B2 JP 6575940B2
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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
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- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
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- Y02E60/10—Energy storage using batteries
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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
- 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
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Description
本発明は、袋詰電極の製造装置、および袋詰電極の製造方法に関する。 The present invention relates to a device for manufacturing a packaged electrode and a method for manufacturing a packaged electrode.
一対のセパレータの間に電極を袋詰してなる袋詰電極が知られている（特許文献１を参照）。セパレータは薄膜状であり、めくれ易い。このため、電極が挟み込まれた一対のセパレータをコンベヤなどによって搬送するときに、搬送方向前方側となる部分においてセパレータがめくれて、セパレータが折れ曲がる。 A packaged electrode in which an electrode is packaged between a pair of separators is known (see Patent Document 1). The separator is thin and easy to turn. For this reason, when a pair of separators in which the electrodes are sandwiched are transported by a conveyor or the like, the separators are turned at a portion on the front side in the transport direction, and the separators are bent.
セパレータが折れ曲がった袋詰電極は、正極と負極とが接することによって電池内において内部短絡を引き起こす原因となる虞がある。このため、セパレータが折れ曲がった袋詰電極は不良品として取り除かなければならず、検査工数および材料費の増大といった問題に繋がる。この結果、袋詰電極の製造の効率化が阻害され、ひいては、電池全体の製造の効率化を図ることができない。 The packaged electrode in which the separator is bent may cause an internal short circuit in the battery due to the contact between the positive electrode and the negative electrode. For this reason, the sealed electrode in which the separator is bent must be removed as a defective product, leading to problems such as an increase in inspection man-hours and material costs. As a result, the efficiency of manufacturing the packaged electrode is hindered, and as a result, the efficiency of manufacturing the entire battery cannot be improved.
特許文献１には、袋詰電極の接合箇所についての考察はなされているものの、製造の効率化を図るための技術については考察されていない。 Japanese Patent Application Laid-Open No. H10-228867 discusses the joint location of the packaged electrode, but does not discuss a technique for improving the manufacturing efficiency.
本発明の目的は、電極が挟み込まれた一対のセパレータを搬送するときにセパレータのめくれが生じることを防止して、袋詰電極の製造の効率化を図り、もって、電池全体の製造の効率化に寄与し得る、袋詰電極の製造装置、および袋詰電極の製造方法を提供することにある。 An object of the present invention is to prevent the separator from being turned over when a pair of separators sandwiched between electrodes is conveyed, thereby improving the efficiency of manufacturing a packaged electrode, thereby improving the efficiency of manufacturing the entire battery. It is in providing the manufacturing apparatus of the bagging electrode which can contribute to, and the manufacturing method of a bagging electrode.
上記目的を達成するための本発明の袋詰電極の製造装置は、電極を一対のセパレータによって挟持し前記一対のセパレータの外周を部分的に接合してなる。袋詰電極の製造装置は、前記一対のセパレータの間に前記電極を挟み込む積層部と、前記電極が挟み込まれた前記一対のセパレータの端部同士を接合する接合部と、前記電極が挟み込まれ前記接合部によって端部同士が接合された前記一対のセパレータを搬送する搬送部と、を有する。前記セパレータは、電池セルの外装材によって挟み込まれる突出部を有し、前記積層部は、前記電極のタブ部が前記一対のセパレータの一辺から突出するように積層し、前記搬送部は、前記電極が挟み込まれた前記一対のセパレータを、前記一辺に向かい合い前記突出部が設けられる他辺の側が前方側となるように搬送する。前記接合部は、前記一対のセパレータの外周のうち前記搬送部によって搬送するときに前方側となる部分に設けられ、前記他辺における両端の角部であって前記セパレータにおける２辺が交差することによって形成される角部を少なくとも含むように接合し、かつ、前記突出部における両端の角部を含むように接合する。
また、本発明の袋詰電極の製造装置は、電極を一対のセパレータによって挟持し前記一対のセパレータの外周を部分的に接合してなる。袋詰電極の製造装置は、前記一対のセパレータの間に前記電極を挟み込む積層部と、前記電極が挟み込まれた前記一対のセパレータの端部同士を接合する接合部と、前記電極が挟み込まれ前記接合部によって端部同士が接合された前記一対のセパレータを搬送する搬送部と、を有する。前記セパレータは、電池セルの外装材によって挟み込まれる突出部を有し、前記積層部は、前記電極のタブ部が前記一対のセパレータの一辺から突出するように積層し、前記搬送部は、前記電極が挟み込まれた前記一対のセパレータを、前記一辺と前記一辺に向かい合い前記突出部が設けられる他辺との間の第三の辺の側が前方側となるように搬送する。前記接合部は、前記一対のセパレータの外周のうち前記搬送部によって搬送するときに前方側となる部分に設けられ、前記第三の辺における両端の角部であって前記セパレータにおける２辺が交差することによって形成される角部を少なくとも含むように接合し、かつ、前記突出部において前記第三の辺に近い方の角部を含むように接合する。
In order to achieve the above object, a device for manufacturing a packaged electrode according to the present invention is formed by sandwiching electrodes between a pair of separators and partially joining outer peripheries of the pair of separators. An apparatus for manufacturing a packaged electrode includes a stacking unit that sandwiches the electrode between the pair of separators, a joining unit that joins end portions of the pair of separators in which the electrodes are sandwiched, and the electrode that is sandwiched between the electrodes. A transport unit that transports the pair of separators whose ends are joined to each other by the joint. The separator has a protruding portion that is sandwiched between battery cell exterior materials, the stacked portion is stacked so that the tab portion of the electrode protrudes from one side of the pair of separators, and the transport portion is the electrode The pair of separators sandwiched in between are transported so that the other side facing the one side is provided on the front side. The joint portion is provided in a portion on the front side when transported by the transport portion of the outer periphery of the pair of separators, and is a corner portion at both ends on the other side, and two sides of the separator intersect. Are joined so as to include at least the corners formed by the above, and are joined so as to include the corners at both ends of the protruding portion .
Moreover, the manufacturing apparatus of the packaged electrode of this invention clamps an electrode with a pair of separator, and joins the outer periphery of said pair of separator partially. An apparatus for manufacturing a packaged electrode includes a stacking unit that sandwiches the electrode between the pair of separators, a joining unit that joins end portions of the pair of separators in which the electrodes are sandwiched, and the electrode that is sandwiched between the electrodes. A transport unit that transports the pair of separators whose ends are joined to each other by the joint. The separator has a protruding portion that is sandwiched between battery cell exterior materials, the stacked portion is stacked so that the tab portion of the electrode protrudes from one side of the pair of separators, and the transport portion is the electrode The pair of separators sandwiched in between are conveyed so that the side of the third side between the one side and the other side facing the one side and provided with the protruding portion is the front side. The joint portion is provided in a portion on the front side of the outer periphery of the pair of separators when transported by the transport unit, and is a corner portion at both ends of the third side, and two sides of the separator intersect. It joins so that the corner | angular part formed at least may be included, and it joins so that the corner | angular part nearer to the said 3rd side may be included in the said protrusion part.
上記目的を達成するための本発明の袋詰電極の製造方法は、電極を一対のセパレータによって挟持し前記一対のセパレータの外周を部分的に接合してなる。袋詰電極の製造方法は、前記一対のセパレータの間に前記電極を挟み込む積層工程と、前記電極が挟み込まれた前記一対のセパレータの端部同士を接合する接合工程と、前記接合工程の後に、前記電極が挟み込まれた前記一対のセパレータを搬送する搬送工程と、を有する。前記セパレータは、電池セルの外装材によって挟み込まれる突出部を有し、前記積層工程において、前記電極のタブ部が前記一対のセパレータの一辺から突出するように積層し、前記搬送工程において、前記電極が挟み込まれた前記一対のセパレータを、前記一辺に向かい合い前記突出部が設けられる他辺の側が前方側となるように搬送する。前記接合工程において、前記一対のセパレータの外周のうち引き続いて行われる前記搬送工程において搬送するときに前方側となる部分に設けられ、前記他辺における両端の角部であって前記セパレータにおける２辺が交差することによって形成される角部を少なくとも含むように接合し、かつ、前記突出部における両端の角部を含むように接合する。
また、本発明の袋詰電極の製造方法は、電極を一対のセパレータによって挟持し前記一対のセパレータの外周を部分的に接合してなる。袋詰電極の製造方法は、前記一対のセパレータの間に前記電極を挟み込む積層工程と、前記電極が挟み込まれた前記一対のセパレータの端部同士を接合する接合工程と、前記接合工程の後に、前記電極が挟み込まれた前記一対のセパレータを搬送する搬送工程と、を有する。前記セパレータは、電池セルの外装材によって挟み込まれる突出部を有し、前記積層工程において、前記電極のタブ部が前記一対のセパレータの一辺から突出するように積層し、前記搬送工程において、前記電極が挟み込まれた前記一対のセパレータを、前記一辺と前記一辺に向かい合い前記突出部が設けられる他辺との間の第三の辺の側が前方側となるように搬送する。前記接合工程において、前記一対のセパレータの外周のうち引き続いて行われる前記搬送工程において搬送するときに前方側となる部分に設けられ、前記第三の辺における両端の角部であって前記セパレータにおける２辺が交差することによって形成される角部を少なくとも含むように接合し、かつ、前記突出部において前記第三の辺に近い方の角部を含むように接合する。
In order to achieve the above object, a method for producing a packaged electrode according to the present invention comprises sandwiching an electrode between a pair of separators and partially joining outer peripheries of the pair of separators. The manufacturing method of the packaged electrode includes a stacking step of sandwiching the electrode between the pair of separators, a joining step of joining ends of the pair of separators sandwiched with the electrodes, and the joining step. A conveying step of conveying the pair of separators between which the electrodes are sandwiched. The separator has a protruding portion that is sandwiched between battery cell exterior materials. In the stacking step, the separator is stacked so that a tab portion of the electrode protrudes from one side of the pair of separators. The pair of separators sandwiched in between are transported so that the other side facing the one side is provided on the front side. In the joining step, provided at a portion on the front side when transported in the transporting step that is continuously performed on the outer periphery of the pair of separators, the corners at both ends on the other side, and two sides of the separator Are joined so as to include at least corners formed by intersecting , and so as to include corners at both ends of the protruding portion.
Moreover, the manufacturing method of the packaged electrode of this invention clamps an electrode with a pair of separator, and joins the outer periphery of said pair of separator partially. The manufacturing method of the packaged electrode includes a stacking step of sandwiching the electrode between the pair of separators, a joining step of joining ends of the pair of separators sandwiched with the electrodes, and the joining step. A conveying step of conveying the pair of separators between which the electrodes are sandwiched. The separator has a protruding portion that is sandwiched between battery cell exterior materials. In the stacking step, the separator is stacked so that a tab portion of the electrode protrudes from one side of the pair of separators. The pair of separators sandwiched in between are conveyed so that the side of the third side between the one side and the other side facing the one side and provided with the protruding portion is the front side. In the joining step, provided in a portion that becomes the front side when transported in the transport step that is continuously performed among the outer peripheries of the pair of separators, corner portions at both ends of the third side, and in the separator It joins so that the corner | angular part formed when two sides cross | intersect may be included at least, and it joins so that the corner | angular part near the said 3rd side may be included in the said protrusion part.
本発明によれば、一対のセパレータの外周のうち搬送するときに前方側となる部分に設けられた角部を少なくとも含むように接合していることから、電極が挟み込まれた一対のセパレータを搬送するときにセパレータのめくれが発生せず、セパレータが折れ曲がることを防止できる。このため、セパレータが折れ曲がった袋詰電極を検出して不良品として取り除く検査工数が不要であり、廃棄に伴う材料費の増大という問題も生じない。この結果、袋詰電極の製造の効率化を図り、もって、電池全体の製造の効率化を図ることができる。 According to the present invention, the pair of separators sandwiched between the electrodes are transported because they are joined so as to include at least the corners provided on the front side of the outer periphery of the pair of separators. In this case, the separator is not turned over, and the separator can be prevented from being bent. For this reason, the inspection man-hour which detects the packing electrode which the separator bent and removes it as a defective article is unnecessary, and the problem of the increase in material cost accompanying disposal does not arise. As a result, it is possible to increase the efficiency of manufacturing the packaged electrode, thereby increasing the efficiency of manufacturing the entire battery.
以下、添付した図面を参照しながら、本発明の実施形態を説明する。なお、図面の説明において同一の要素には同一の符号を付し、重複する説明を省略する。図面の寸法比率は、説明の都合上誇張されており、実際の比率とは異なる。 Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings. In the description of the drawings, the same elements are denoted by the same reference numerals, and redundant description is omitted. The dimensional ratios in the drawings are exaggerated for convenience of explanation, and are different from the actual ratios.
図１（Ａ）は、袋詰電極２０を用いて構成したリチウムイオン二次電池１０を示す斜視図、図１（Ｂ）は、リチウムイオン二次電池１０を分解して示す分解斜視図である。図２（Ａ）は、袋詰電極２０の一例を示す図、図２（Ｂ）は、電極４０を一対のセパレータ３０によって挟持する様子を模式的に示す斜視図である。図３は、図２（Ａ）に２点鎖線によって囲まれた部位３を拡大して示す図であり、セパレータ３０を搬送するときに前方側となる部分に設けられた「角部５２」の説明に使用する説明図である。図４は、袋詰電極２０の製造装置１００の要部を示す構成図である。 FIG. 1A is a perspective view showing a lithium ion secondary battery 10 configured using the packaged electrode 20, and FIG. 1B is an exploded perspective view showing the lithium ion secondary battery 10 in an exploded manner. . FIG. 2A is a diagram illustrating an example of the packaged electrode 20, and FIG. 2B is a perspective view schematically illustrating a state in which the electrode 40 is sandwiched between a pair of separators 30. FIG. 3 is an enlarged view of a portion 3 surrounded by a two-dot chain line in FIG. 2 (A), and shows a “corner portion 52” provided in a portion on the front side when the separator 30 is conveyed. It is explanatory drawing used for description. FIG. 4 is a configuration diagram showing a main part of the manufacturing apparatus 100 for the packaged electrode 20.
なお、図２（Ａ）および図４に示される矢印ａは、電極４０が挟み込まれ端部同士が接合された一対のセパレータ３０を搬送する搬送方向を示している。図２（Ａ）および図４において図中右側が搬送方向の下流側であり、各部材における「前」といい、図中左側が搬送方向の上流側であり、各部材における「後」という。また、セパレータ３０の外周のうち搬送する方向に沿って伸びる縁を「側方縁３１」といい、搬送するときの前方側となるセパレータ３０の縁を「前方縁３２」、搬送するときの後方側となるセパレータ３０の縁を「後方縁３３」という。一対のセパレータ３０の間に電極４０が挟まれた積層体であって、セパレータ３０の端部同士を接合する前の積層体を「ワーク」ともいう。 2A and 4 indicate the transport direction in which the pair of separators 30 in which the electrode 40 is sandwiched and the ends are joined are transported. 2A and 4, the right side in the drawing is the downstream side in the conveyance direction and is referred to as “front” in each member, and the left side in the drawing is the upstream side in the conveyance direction and is referred to as “rear” in each member. In addition, an edge extending along the conveying direction on the outer periphery of the separator 30 is referred to as a “side edge 31”, and an edge of the separator 30 on the front side when being conveyed is a “front edge 32”, and a rear side when being conveyed The edge of the separator 30 on the side is referred to as a “rear edge 33”. A laminate in which the electrode 40 is sandwiched between a pair of separators 30 and before the end portions of the separators 30 are joined together is also referred to as a “workpiece”.
図１（Ａ）（Ｂ）を参照して、袋詰電極２０を用いて構成した電気デバイスの一例としてのリチウムイオン二次電池１０について説明する。リチウムイオン二次電池１０は、充放電が行われる発電要素１１を一対の外装材６０によって封止して構成している。発電要素１１は、袋詰電極２０を有している。袋詰電極２０は、正極または負極の電極４０を一対のセパレータ３０によって挟持し、一対のセパレータ３０の外周を部分的に接合して形成している。本実施形態にあっては、正極を袋詰電極２０としている。発電要素１１は、袋詰電極２０と、負極１２とを交互に積層して構成している。セパレータ３０は、ポリプロピレンなどの樹脂材料からなる薄膜である。外装材６０は、例えば、薄肉のアルミ板の両面に樹脂層を形成したラミネートフィルムなどから構成している。 With reference to FIGS. 1A and 1B, a lithium ion secondary battery 10 as an example of an electric device configured using a packaged electrode 20 will be described. The lithium ion secondary battery 10 is configured by sealing a power generating element 11 to be charged and discharged with a pair of exterior members 60. The power generation element 11 has a packed electrode 20. The packaged electrode 20 is formed by sandwiching a positive or negative electrode 40 between a pair of separators 30 and partially joining the outer periphery of the pair of separators 30. In the present embodiment, the positive electrode is the packaged electrode 20. The power generation element 11 is configured by alternately laminating the packed electrodes 20 and the negative electrodes 12. The separator 30 is a thin film made of a resin material such as polypropylene. The exterior material 60 is composed of, for example, a laminate film in which resin layers are formed on both surfaces of a thin aluminum plate.
図２（Ａ）（Ｂ）を参照して、電極４０は、金属箔の両面に活物質を塗布した本体部４１と、金属箔の一部から形成されるタブ部４２と、を備えている。セパレータ３０は、電極４０の本体部４１よりもやや大きい大きさを有している。電極４０の本体部４１のみを一対のセパレータ３０によって挟み込み、電極４０のタブ部４２を外部に臨ませている。
一対のセパレータ３０は、外周のうち搬送するときに前方側となる部分に設けられた角部５２を少なくとも含むように接合している。図２（Ａ）に示す例では、一対のセパレータ３０の外周を接合点５０ａ〜５０ｆの６か所において接合している。接合点５０ａ、５０ｂによって、セパレータ３０の前方縁３２に設けられた角部５２を接合している。
2 (A) and 2 (B), the electrode 40 includes a main body portion 41 in which an active material is applied to both surfaces of a metal foil, and a tab portion 42 formed from a part of the metal foil. . The separator 30 has a size slightly larger than the main body 41 of the electrode 40. Only the main body 41 of the electrode 40 is sandwiched between the pair of separators 30 so that the tab 42 of the electrode 40 faces the outside.
The pair of separators 30 are joined so as to include at least a corner portion 52 provided in a portion on the front side when the outer periphery is conveyed. In the example shown in FIG. 2 (A), the outer circumferences of the pair of separators 30 are joined at six locations of the joining points 50a to 50f. The corners 52 provided on the front edge 32 of the separator 30 are joined by the joining points 50a and 50b.
セパレータ３０は、電池１０の外装材６０によって挟み込まれる突出部３５を有している。突出部３５を外装材６０の間に挟んだ状態において外装材６０を溶着することによって、正負極およびセパレータ３０を積層した電極積層体が、外装材６０の中において位置ずれすることを抑制する。 The separator 30 has a protruding portion 35 that is sandwiched between the exterior members 60 of the battery 10. By welding the exterior material 60 in a state in which the protruding portion 35 is sandwiched between the exterior materials 60, the electrode stack in which the positive and negative electrodes and the separator 30 are stacked is prevented from being displaced in the exterior material 60.
なお、図２（Ａ）において、セパレータ３０の４辺のうち図中右側のタブ部４２が突出する辺を「一辺３６」といい、一辺３６に向かい合い突出部３５が設けられる辺を「他辺３７」といい、一辺３６と他辺３７との間の辺を「第三の辺３８」という。 In FIG. 2A, of the four sides of the separator 30, the side on which the tab portion 42 on the right side in the drawing protrudes is referred to as “one side 36”, and the side that faces the one side 36 and is provided with the protruding portion 35 is referred to as “other side”. 37 ”, and the side between one side 36 and the other side 37 is called“ third side 38 ”.
図３を参照して、本明細書において、一対のセパレータ３０の外周のうち搬送するときに前方側となる部分に設けられた「角部５２」の位置について説明する。セパレータ３０同士を接合する「角部５２」は、重ね合わされたセパレータ３０のいわゆる口開きを抑え得る観点から設定することができる。「角部５２」は、セパレータ３０における２辺が交差することによって形成される角部を指している。搬送態様によっては、突出部３５の端部も「角部５２」となり得る（後述する図５、図６を参照）。 With reference to FIG. 3, in this specification, the position of the “corner portion 52” provided in the portion on the front side when the outer periphery of the pair of separators 30 is conveyed will be described. The “corner portion 52” that joins the separators 30 can be set from the viewpoint of suppressing so-called opening of the stacked separators 30. “Corner 52” refers to a corner formed by the intersection of two sides of the separator 30. Depending on the transport mode, the end portion of the protruding portion 35 can also be a “corner portion 52” (see FIGS. 5 and 6 described later).
図４を参照して、袋詰電極２０の製造装置１００は、概説すると、電極４０を一対のセパレータ３０によって挟持し一対のセパレータ３０の外周を部分的に接合する。袋詰電極２０の製造装置１００は、積層部２００と、接合部３００と、搬送部４００と、を有している。積層部２００は、一対のセパレータ３０の間に電極４０を挟み込む。接合部３００は、電極４０が挟み込まれた一対のセパレータ３０の端部同士を接合する。搬送部４００は、電極４０が挟み込まれ接合部３００によって端部同士が接合された一対のセパレータ３０を搬送する。そして、接合部３００は、一対のセパレータ３０の外周のうち搬送部４００によって搬送するときに前方側となる部分に設けられた角部５２を少なくとも含むように接合している。本実施形態では、搬送部４００は、電極４０が挟み込まれた一対のセパレータ３０を、一辺３６の側が前方側となるように搬送する。そして、接合部３００は、一辺３６における両端の角部５２を含むように接合している。以下、詳述する。 With reference to FIG. 4, the manufacturing apparatus 100 for the packaged electrode 20 is briefly outlined, with the electrode 40 sandwiched between the pair of separators 30 and the outer periphery of the pair of separators 30 being partially joined. The manufacturing apparatus 100 for the packaged electrode 20 includes a stacked unit 200, a bonding unit 300, and a transport unit 400. The stacked unit 200 sandwiches the electrode 40 between the pair of separators 30. The joining part 300 joins the ends of the pair of separators 30 with the electrode 40 sandwiched therebetween. The transport unit 400 transports the pair of separators 30 in which the electrodes 40 are sandwiched and the ends are joined to each other by the joint unit 300. And the junction part 300 is joined so that the corner | angular part 52 provided in the part which becomes a front side when it conveys by the conveyance part 400 among the outer periphery of a pair of separator 30 may be included. In the present embodiment, the transport unit 400 transports the pair of separators 30 with the electrode 40 sandwiched therebetween so that the side 36 is on the front side. And the junction part 300 is joined so that the corner | angular part 52 of the both ends in the one side 36 may be included. Details will be described below.
積層部２００は、電極４０のタブ部４２が一対のセパレータ３０の一辺３６から突出するように積層する。積層部２００は、一対のセパレータ３０のそれぞれを保持する一対の円柱回転体である積層ドラム２１０、２２０と、一対の積層ドラム２１０、２２０の上流側に配置された電極搬入部２３０と、を含んでいる。一対の積層ドラム２１０、２２０の間に、ワークを挟持するニップ部２１５を形成している。ニップ部２１５の隙間寸法は、ワークの厚さによって適宜調整される。電極搬入部２３０は、所定形状に形成された電極４０をニップ部２１５に接線方向に沿って送り込む。 The stacked portion 200 is stacked so that the tab portion 42 of the electrode 40 protrudes from one side 36 of the pair of separators 30. The stacking unit 200 includes stacking drums 210 and 220 that are a pair of cylindrical rotating bodies that hold the pair of separators 30, and an electrode carry-in unit 230 disposed on the upstream side of the pair of stacking drums 210 and 220. It is out. Between the pair of laminated drums 210 and 220, a nip portion 215 for sandwiching the workpiece is formed. The gap size of the nip portion 215 is appropriately adjusted according to the thickness of the workpiece. The electrode carry-in part 230 feeds the electrode 40 formed in a predetermined shape into the nip part 215 along the tangential direction.
電極搬入部２３０は、例えば、電極４０を吸着して搬送自在な吸着装置２３１と、吸着装置２３１によって搬送されてきた電極４０を支持する支持ローラ２３２と、電極４０をニップ部２１５に接線方向に沿って送り込む一対の搬入ローラ２３３とを有している。吸着装置２３１は、垂直に下降して電極４０を吸着し、電極４０の略水平状態を維持したまま上昇した後、搬送方向の下流側に移動する。搬入ローラ２３３のそれぞれは、吸着装置２３１によって搬送された電極４０に対して接近離反移動自在に設けられ、電極４０を挟み込んで回転することによって電極４０をニップ部２１５に接線方向に沿って送り込む。 The electrode carrying-in unit 230 includes, for example, an adsorption device 231 that can adsorb and convey the electrode 40, a support roller 232 that supports the electrode 40 conveyed by the adsorption device 231, and the electrode 40 tangentially to the nip portion 215. And a pair of carry-in rollers 233 for feeding along. The adsorbing device 231 descends vertically to adsorb the electrode 40, moves up while maintaining the substantially horizontal state of the electrode 40, and then moves downstream in the transport direction. Each of the carry-in rollers 233 is provided so as to be movable toward and away from the electrode 40 conveyed by the suction device 231, and feeds the electrode 40 into the nip portion 215 along the tangential direction by sandwiching and rotating the electrode 40.
一対の積層ドラム２１０、２２０は、上下方向に対をなして配置され、それぞれが円柱形状を有している。一対の積層ドラム２１０、２２０は、搬送方向に直交しながら、所定の隙間を隔てて、回転軸が互いに平行に対向する態様で配置されている。積層ドラム２１０、２２０のそれぞれは、周面が、セパレータ３０を保持する保持面２１１、２２１となっている。積層ドラム２１０、２２０は、所定形状に形成されたセパレータ３０を周面上に保持しながら搬送する。 The pair of laminated drums 210 and 220 are arranged in pairs in the vertical direction, and each has a cylindrical shape. The pair of laminated drums 210 and 220 are arranged in such a manner that the rotating shafts face each other in parallel with a predetermined gap therebetween while being orthogonal to the transport direction. Each of the lamination drums 210 and 220 has a holding surface 211 or 221 that holds the separator 30 on its peripheral surface. The stacking drums 210 and 220 convey the separator 30 formed in a predetermined shape while holding it on the peripheral surface.
積層ドラム２１０、２２０の保持面２１１、２２１にセパレータ３０を保持する手段については特に限定されないが、吸引吸着あるいは静電吸着などを適用することができる。例えば、吸引吸着式にあっては、保持面２１１、２２１は、複数の空気吸引孔を有している。これら空気吸引孔から空気を吸引することによって、セパレータ３０を保持面２１１、２２１に保持する。 The means for holding the separator 30 on the holding surfaces 211 and 221 of the stacking drums 210 and 220 is not particularly limited, and suction adsorption or electrostatic adsorption can be applied. For example, in the suction adsorption type, the holding surfaces 211 and 221 have a plurality of air suction holes. The separator 30 is held on the holding surfaces 211 and 221 by sucking air from these air suction holes.
一対の積層ドラム２１０、２２０は、ニップ部２１５において搬送方向の前方に向けて同方向に回転する。すなわち、上側の積層ドラム２１０は、図４において反時計回り方向に回転することによって、保持面２１１に貼り付けられたセパレータ３０をニップ部２１５に向けて搬送する。下側の積層ドラム２２０は、時計回り方向に回転することによって、保持面２２１に貼り付けられたセパレータ３０をニップ部２１５に向けて搬送する。 The pair of laminated drums 210 and 220 rotate in the same direction toward the front in the conveying direction at the nip portion 215. That is, the upper laminated drum 210 rotates in the counterclockwise direction in FIG. 4, thereby conveying the separator 30 attached to the holding surface 211 toward the nip portion 215. The lower stacking drum 220 rotates in the clockwise direction to convey the separator 30 attached to the holding surface 221 toward the nip portion 215.
電極搬入部２３０が、積層ドラム２１０、２２０の回転と同期して、電極４０を略水平状態に搬送してニップ部２１５に接線方向に沿って送り込む。一方、一対の積層ドラム２１０、２２０が、保持面２１１、２２１に貼り付けたセパレータ３０を回転にしたがってニップ部２１５に送り込む。これにより、積層部２００は、電極４０および一対のセパレータ３０を前方側から重ねて積層する。 The electrode carry-in unit 230 conveys the electrode 40 in a substantially horizontal state in synchronization with the rotation of the lamination drums 210 and 220 and feeds the electrode 40 into the nip unit 215 along the tangential direction. On the other hand, the pair of laminated drums 210 and 220 feeds the separator 30 attached to the holding surfaces 211 and 221 to the nip portion 215 according to the rotation. Thereby, the lamination | stacking part 200 laminates | stacks the electrode 40 and a pair of separator 30 from the front side.
セパレータ３０は、図示しないセパレータロールから順次繰り出されてくる連続したセパレータ部材３４から切り出して形成している。一対の積層ドラム２１０、２２０のそれぞれには、セパレータ部材３４を積層ドラム２１０、２２０との間で挟持するタイミングローラ２１２、２２２が配置されている。タイミングローラ２１２、２２２の作動を制御することによって、セパレータ部材３４を積層ドラム２１０、２２０に送り出すタイミングの制御を行う。上側の積層ドラム２１０の上方に上側のセパレータカッター２１３を設け、下側の積層ドラム２２０の下方に下側のセパレータカッター２２３を設けている。タイミングローラ２１２、２２２がセパレータ部材３４を積層ドラム２１０、２２０に送り出すと、セパレータ部材３４が積層ドラム２１０、２２０の保持面２１１、２２１に貼り付いて搬送される。セパレータ部材３４が所定位置まで搬送されたタイミングでセパレータカッター２１３、２２３を作動させることによって、セパレータ部材３４から所定形状のセパレータ３０が切り出される。 The separator 30 is formed by cutting out from a continuous separator member 34 that is sequentially fed from a separator roll (not shown). Timing rollers 212 and 222 that sandwich the separator member 34 between the stacking drums 210 and 220 are disposed on the pair of stacking drums 210 and 220, respectively. By controlling the operation of the timing rollers 212 and 222, the timing of feeding the separator member 34 to the stacking drums 210 and 220 is controlled. An upper separator cutter 213 is provided above the upper lamination drum 210, and a lower separator cutter 223 is provided below the lower lamination drum 220. When the timing rollers 212 and 222 send the separator member 34 to the stacking drums 210 and 220, the separator member 34 is attached to the holding surfaces 211 and 221 of the stacking drums 210 and 220 and conveyed. By operating the separator cutters 213 and 223 at the timing when the separator member 34 is conveyed to a predetermined position, the separator 30 having a predetermined shape is cut out from the separator member 34.
接合部３００は、電極４０が挟み込まれた一対のセパレータ３０の一辺３６における両端の角部５２を含むように接合する。セパレータ３０の一辺３６の側は、袋詰電極２０を搬送するときに前方側となる。 The joining portion 300 is joined so as to include the corner portions 52 at both ends on one side 36 of the pair of separators 30 with the electrode 40 sandwiched therebetween. The side 36 of the separator 30 is the front side when the packaged electrode 20 is conveyed.
本実施形態では、接合部３００は、一対のセパレータ３０を重ね合わせた方向に加圧する溶着治具３０１を有している。接合部３００は、溶着治具３０１を角部５２に重ねて一対のセパレータ３０の端部同士を溶着する。接合部３００は、電極４０が挟み込まれた一対のセパレータ３０、つまりワークを挟んで向かい合って上下に一対設けてある。一対のセパレータ３０の両面のそれぞれから接合することになるため、片面のみから接合する場合に比べて、均一な接合状態を作り出すことができる。また、セパレータ３０の材質、特に、熱的な性質が異なるセパレータ３０を適用する場合に、接合条件の最適化のための調整が容易となる。 In the present embodiment, the joint portion 300 includes a welding jig 301 that pressurizes the pair of separators 30 in the overlapping direction. The joint part 300 welds the ends of the pair of separators 30 with the welding jig 301 overlapped with the corner part 52. The joint portion 300 is provided with a pair of separators 30 in which the electrodes 40 are sandwiched, that is, a pair of upper and lower portions facing each other with a workpiece interposed therebetween. Since it joins from each of both surfaces of a pair of separator 30, compared with the case where it joins only from one side, a uniform joining state can be created. Further, when applying the separator 30 having a different material, in particular, a thermal property, adjustment for optimizing the joining conditions is facilitated.
溶着治具３０１は、ワークに対して相対的に接近離反移動自在な溶着ヘッド３０２と、一対のセパレータ３０の端部同士を溶着する溶着チップ３０３と、有している。溶着チップ３０３には、一方の側方縁３１における接合点５０ａ、５０ｃ、５０ｅを形成する溶着チップ３０３と、他方の側方縁３１における接合点５０ｂ、５０ｄ、５０ｆを形成する溶着チップ３０３とが含まれる。溶着する手段については特に限定されず、熱溶着、超音波溶着のいずれをも適用することができる。 The welding jig 301 includes a welding head 302 that is relatively movable toward and away from the workpiece, and a welding tip 303 that welds the ends of the pair of separators 30 to each other. The welding tip 303 includes a welding tip 303 that forms the joint points 50a, 50c, and 50e on one side edge 31, and a welding tip 303 that forms the joint points 50b, 50d, and 50f on the other side edge 31. included. The means for welding is not particularly limited, and either heat welding or ultrasonic welding can be applied.
搬送部４００は、電極４０が挟み込まれ接合部３００によって端部同士が接合された一対のセパレータ３０、つまり袋詰電極２０を搬送する。搬送部４００は、袋詰電極２０を、一辺３６の側が前方側となるように搬送する。 The transport unit 400 transports a pair of separators 30 in which the electrodes 40 are sandwiched and end portions are joined by the joint unit 300, that is, the packaged electrodes 20. The transport unit 400 transports the packaged electrode 20 so that the side 36 is on the front side.
搬送部４００は、例えばコンベア４０１を有し、袋詰電極２０を、次工程の処理を行うステージに向けて搬送する。コンベア４０１は、吸着コンベアから構成することができる。コンベア４０１は、ローラに接続された駆動モータ４０２によって回転駆動される。なお、搬送部４００としてコンベアを使用しているが、吸着ハンドなど他の搬送装置を使用してもよい。 The transport unit 400 includes, for example, a conveyor 401, and transports the packaged electrode 20 toward a stage that performs the next process. The conveyor 401 can be composed of a suction conveyor. The conveyor 401 is rotationally driven by a drive motor 402 connected to rollers. In addition, although the conveyor is used as the conveyance part 400, you may use other conveying apparatuses, such as a suction hand.
実施形態の作用について説明する。 The operation of the embodiment will be described.
袋詰電極２０の製造手順は、概説すると、積層工程と、接合工程と、搬送工程と、を有している。積層工程において、一対のセパレータ３０の間に電極４０を挟み込む。接合工程において、電極４０が挟み込まれた一対のセパレータ３０の端部同士を接合する。この接合工程においては、一対のセパレータ３０の外周のうち引き続いて行われる搬送工程において搬送するときに前方側となる部分に設けられた角部５２を少なくとも含むように接合する、そして、搬送工程において、接合工程の後に、電極４０が挟み込まれた一対のセパレータ３０、つまり袋詰電極２０を搬送する。以下、詳述する。 The outline of the manufacturing procedure of the packaged electrode 20 includes a stacking step, a joining step, and a conveying step. In the stacking step, the electrode 40 is sandwiched between the pair of separators 30. In the joining step, the ends of the pair of separators 30 with the electrode 40 sandwiched are joined together. In this joining step, joining is performed so as to include at least a corner portion 52 provided in a portion on the front side when transported in a subsequent transporting step of the outer periphery of the pair of separators 30. After the joining step, the pair of separators 30 in which the electrode 40 is sandwiched, that is, the packaged electrode 20 is conveyed. Details will be described below.
積層部２００は、積層ドラム２１０、２２０のニップ部２１５からワークを送り出す。ワークは、電極４０のタブ部４２が一対のセパレータ３０の一辺３６から突出するように、電極４０および一対のセパレータ３０が積層されている（積層工程）。 The stacking unit 200 sends out the work from the nip portion 215 of the stacking drums 210 and 220. In the work, the electrode 40 and the pair of separators 30 are laminated so that the tab portion 42 of the electrode 40 protrudes from one side 36 of the pair of separators 30 (lamination step).
接合部３００は、図２（Ａ）に示すように、一対のセパレータ３０の一辺３６における両端の角部５２を含むように接合する（接合工程）。このとき、接合部３００の溶着治具３０１は、一対のセパレータ３０の一辺３６を、一対のセパレータ３０を重ね合わせた方向（図４において上下方向）に加圧する。接合部３００は、溶着治具３０１を角部５２に重ねて一対のセパレータ３０の端部同士を溶着する。これにより、ワークに対するセパレータ３０同士の接合が終了し、袋詰電極２０が製造される。 As shown in FIG. 2A, the joining portion 300 is joined so as to include the corner portions 52 at both ends on one side 36 of the pair of separators 30 (joining step). At this time, the welding jig 301 of the joining portion 300 pressurizes one side 36 of the pair of separators 30 in the direction in which the pair of separators 30 are overlapped (vertical direction in FIG. 4). The joint part 300 welds the ends of the pair of separators 30 with the welding jig 301 overlapped with the corner part 52. Thereby, joining of the separators 30 to the workpiece is completed, and the packaged electrode 20 is manufactured.
そして、搬送部４００は、電極４０が挟み込まれた一対のセパレータ３０、つまり袋詰電極２０を、一辺３６の側が前方側となるように搬送する（搬送工程）。 And the conveyance part 400 conveys a pair of separator 30 with which the electrode 40 was pinched | interposed, ie, the packing electrode 20, so that the side 36 side may become the front side (conveyance process).
その後、図示しない後の工程において、正極の袋詰電極２０と、それと対極の負極１２、正極の袋詰電極２０とを交互に積層することによって、電池セルを製造する。 Thereafter, in a later step (not shown), the positively packed electrode 20, the negative electrode 12 of the counter electrode, and the positively packed electrode 20 are alternately stacked to manufacture a battery cell.
本実施形態では、一対のセパレータ３０の一辺３６における両端の角部５２を含むように接合し、一対のセパレータ３０の一辺３６の側が前方側となるように袋詰電極２０を搬送する。このため、電極４０が挟み込まれた一対のセパレータ３０を搬送するときにセパレータ３０のめくれが発生せず、セパレータ３０が折れ曲がることを防止できる。このため、セパレータ３０が折れ曲がった袋詰電極２０を検出して不良品として取り除く検査工数が不要であり、廃棄に伴う材料費の増大という問題も生じない。この結果、袋詰電極２０の製造の効率化を図り、もって、電池全体の製造の効率化を図ることができる。 In this embodiment, it joins so that the corner | angular part 52 of the both ends in one side 36 of a pair of separator 30 may be included, and the packing electrode 20 is conveyed so that the side 36 of the pair of separator 30 may become the front side. For this reason, when conveying a pair of separator 30 with the electrode 40 sandwiched therebetween, the separator 30 is not turned up, and the separator 30 can be prevented from being bent. For this reason, the inspection man-hour which detects the packaging electrode 20 which the separator 30 bent and removes it as a defective product is unnecessary, and the problem of the increase in material cost accompanying disposal does not arise. As a result, the manufacturing efficiency of the packaged electrode 20 can be improved, and the manufacturing efficiency of the entire battery can be improved.
以上説明したように。本実施形態によれば、袋詰電極２０の製造装置１００は、積層部２００と、接合部３００と、搬送部４００と、を有し、接合部３００は、一対のセパレータ３０の外周のうち搬送部４００によって搬送するときに前方側となる部分に設けられた角部５２を少なくとも含むように接合している。また、袋詰電極２０の製造方法は、積層工程と、接合工程と、搬送工程と、を有し、接合工程において、一対のセパレータ３０の外周のうち引き続いて行われる搬送工程において搬送するときに前方側となる部分に設けられた角部５２を少なくとも含むように接合している。 As explained above. According to the present embodiment, the manufacturing apparatus 100 for the packaged electrode 20 includes the stacking unit 200, the joint unit 300, and the transport unit 400, and the joint unit 300 transports the outer periphery of the pair of separators 30. It joins so that the corner | angular part 52 provided in the part used as the front side when conveying by the part 400 may be included at least. Moreover, the manufacturing method of the bagging electrode 20 has a lamination | stacking process, a joining process, and a conveyance process, When conveying in the conveyance process performed continuously among the outer periphery of a pair of separator 30 in a joining process. It joins so that the corner | angular part 52 provided in the part used as the front side may be included at least.
このように構成することによって、一対のセパレータ３０の外周のうち搬送するときに前方側となる部分に設けられた角部５２を少なくとも含むように接合していることから、電極４０が挟み込まれた一対のセパレータ３０を搬送するときにセパレータ３０のめくれが発生せず、セパレータ３０が折れ曲がることを防止できる。このため、セパレータ３０が折れ曲がった袋詰電極２０を検出して不良品として取り除く検査工数が不要であり、廃棄に伴う材料費の増大という問題も生じない。この結果、袋詰電極２０の製造の効率化を図り、もって、電池全体の製造の効率化を図ることができる。 By comprising in this way, since it joined so that the corner | angular part 52 provided in the part used as the front side might be included among the outer periphery of a pair of separator 30 at the front side, the electrode 40 was pinched | interposed When the pair of separators 30 are conveyed, the separators 30 are not turned up, and the separators 30 can be prevented from being bent. For this reason, the inspection man-hour which detects the packaging electrode 20 which the separator 30 bent and removes it as a defective product is unnecessary, and the problem of the increase in material cost accompanying disposal does not arise. As a result, the manufacturing efficiency of the packaged electrode 20 can be improved, and the manufacturing efficiency of the entire battery can be improved.
接合部３００は、一対のセパレータ３０を重ね合わせた方向に加圧する溶着治具３０１を有し、溶着治具３０１を角部５２に重ねて一対のセパレータ３０の端部同士を溶着している。また、接合工程において、一対のセパレータ３０を重ね合わせた方向に溶着治具３０１によって加圧し、溶着治具３０１を角部５２に重ねて一対のセパレータ３０の端部同士を溶着している。 The joining portion 300 includes a welding jig 301 that pressurizes in the direction in which the pair of separators 30 are overlapped, and the end portions of the pair of separators 30 are welded to each other by overlapping the welding jig 301 on the corner portion 52. Further, in the joining step, the welding jig 301 is pressed in the direction in which the pair of separators 30 are overlapped, and the end portions of the pair of separators 30 are welded together by overlapping the welding jig 301 on the corner portion 52.
このように構成することによって、熱溶着や超音波溶着などの溶着技術を適用して、一対のセパレータ３０の端部同士を簡単に接合できる。 By comprising in this way, the welding technique, such as heat welding and ultrasonic welding, is applied, and the edge part of a pair of separator 30 can be joined easily.
積層部２００は、電極４０のタブ部４２が一対のセパレータ３０の一辺３６から突出するように積層し、搬送部４００は、電極４０が挟み込まれた一対のセパレータ３０を、一辺３６の側が前方側となるように搬送している。この場合において、接合部３００は、一辺３６における両端の角部５２を含むように接合している。また、積層工程において、電極４０のタブ部４２が一対のセパレータ３０の一辺３６から突出するように積層し、搬送工程において、電極４０が挟み込まれた一対のセパレータ３０を、一辺３６の側が前方側となるように搬送している。この場合において、接合工程は、一辺３６における両端の角部５２を含むように接合している。 The stacking unit 200 stacks so that the tab portion 42 of the electrode 40 protrudes from one side 36 of the pair of separators 30, and the transport unit 400 includes the pair of separators 30 in which the electrode 40 is sandwiched, the one side 36 side being the front side It is conveyed to become. In this case, the joining portion 300 is joined so as to include the corner portions 52 at both ends on one side 36. Further, in the stacking step, the tabs 42 of the electrodes 40 are stacked so as to protrude from one side 36 of the pair of separators 30. In the transporting step, the pair of separators 30 in which the electrodes 40 are sandwiched are It is conveyed to become. In this case, the bonding step is performed so as to include the corners 52 at both ends on one side 36.
このように構成することによって、タブ部４２が設けられた一辺３６の側を前方側にして搬送する態様において、セパレータ３０のめくれが発生せず、セパレータ３０が折れ曲がることを防止できる。このため、検査工数が不要であり、廃棄に伴う材料費の増大という問題も生じない。この結果、袋詰電極２０の製造の効率化を図り、もって、電池全体の製造の効率化を図ることができる。 By comprising in this way, in the aspect conveyed by making the one side 36 side in which the tab part 42 was provided into the front side, the separator 30 is not turned up and it can prevent that the separator 30 bends. For this reason, the inspection man-hour is unnecessary, and the problem of increase in material cost accompanying disposal does not occur. As a result, the manufacturing efficiency of the packaged electrode 20 can be improved, and the manufacturing efficiency of the entire battery can be improved.
（改変例）
一対のセパレータ３０の端部同士を接合する態様、および袋詰電極２０を搬送する態様は上述した実施形態における態様に限定されるものではなく、次のように改変することができる。
(Modification example)
The aspect which joins the edge parts of a pair of separator 30, and the aspect which conveys the bagging electrode 20 are not limited to the aspect in embodiment mentioned above, It can modify | change as follows.
図５は、改変例に係る袋詰電極２０を示す図である。図５における矢印ａは、袋詰電極２０を搬送する搬送方向を示している。 FIG. 5 is a diagram showing a packaged electrode 20 according to a modified example. An arrow “a” in FIG. 5 indicates a transport direction in which the packaged electrode 20 is transported.
積層部２００は、実施形態と同様に、電極４０および一対のセパレータ３０を、電極４０のタブ部４２が一対のセパレータ３０の一辺３６から突出するように積層する。搬送部４００は、電極４０が挟み込まれた一対のセパレータ３０を、一辺３６に向かい合い突出部３５が設けられる他辺３７の側が前方側となるように搬送する。このような搬送態様の場合には、接合部３００は、他辺３７における両端の角部５２と、突出部３５における両端の角部５２とを含むように接合する。図５に示す例では、一対のセパレータ３０の外周を接合点５０ｇ〜５０ｎの８か所において接合している。接合点５０ｇ、５０ｊによって、セパレータ３０の前方縁３２に設けられた両端の角部５２を接合し、接合点５０ｈ、５０ｉによって、セパレータ３０の前方縁３２に設けられた突出部３５における両端の角部５２を接合している。 Similar to the embodiment, the stacked unit 200 stacks the electrode 40 and the pair of separators 30 such that the tab portion 42 of the electrode 40 protrudes from one side 36 of the pair of separators 30. The transport unit 400 transports the pair of separators 30 sandwiched between the electrodes 40 such that the side of the other side 37 facing the one side 36 and provided with the protruding portion 35 is the front side. In the case of such a transport mode, the joining portion 300 is joined so as to include the corner portions 52 at both ends of the other side 37 and the corner portions 52 at both ends of the protruding portion 35. In the example shown in FIG. 5, the outer circumferences of the pair of separators 30 are joined at eight locations of the joining points 50 g to 50 n. The corners 52 at both ends provided on the front edge 32 of the separator 30 are joined by the joining points 50g and 50j, and the corners at both ends of the protrusion 35 provided at the front edge 32 of the separator 30 are joined by the joining points 50h and 50i. The part 52 is joined.
このような接合態様および搬送態様の場合においても、袋詰電極２０を搬送するときにセパレータ３０のめくれが発生せず、セパレータ３０が折れ曲がることを防止できる。このため、検査工数が不要であり、廃棄に伴う材料費の増大という問題も生じない。この結果、袋詰電極２０の製造の効率化を図り、もって、電池全体の製造の効率化を図ることができる。 Even in the case of such a joining mode and a transport mode, the separator 30 is not turned over when the packaged electrode 20 is transported, and the separator 30 can be prevented from being bent. For this reason, the inspection man-hour is unnecessary, and the problem of increase in material cost accompanying disposal does not occur. As a result, the manufacturing efficiency of the packaged electrode 20 can be improved, and the manufacturing efficiency of the entire battery can be improved.
図６は、他の改変例に係る袋詰電極２０を示す図である。図６における矢印ａは、袋詰電極２０を搬送する搬送方向を示している。 FIG. 6 is a view showing a packaged electrode 20 according to another modification. An arrow “a” in FIG. 6 indicates a conveyance direction in which the packaged electrode 20 is conveyed.
積層部２００は、実施形態と同様に、電極４０および一対のセパレータ３０を、電極４０のタブ部４２が一対のセパレータ３０の一辺３６から突出するように積層する。搬送部４００は、電極４０が挟み込まれた一対のセパレータ３０を、一辺３６と一辺３６に向かい合い突出部３５が設けられる他辺３７との間の第三の辺３８の側が前方側となるように搬送する。このような搬送態様の場合には、接合部３００は、第三の辺３８における両端の角部５２と、突出部３５において第三の辺３８に近い方の角部５２とを含むように接合する。図６に示す例では、一対のセパレータ３０の外周を接合点５０ｏ〜５０ｕの７か所において接合している。接合点５０ｐ、５０ｒによって、セパレータ３０の前方縁３２に設けられた両端の角部５２を接合し、接合点５０ｏによって、セパレータ３０の前方縁３２に設けられた突出部３５において第三の辺３８に近い方の角部５２を接合している。 Similar to the embodiment, the stacked unit 200 stacks the electrode 40 and the pair of separators 30 such that the tab portion 42 of the electrode 40 protrudes from one side 36 of the pair of separators 30. The transport unit 400 is configured so that the side of the third side 38 between the one side 36 and the other side 37 provided with the projecting portion 35 is the front side of the pair of separators 30 with the electrode 40 sandwiched therebetween. Transport. In the case of such a transport mode, the joining portion 300 is joined so as to include the corner portions 52 at both ends of the third side 38 and the corner portion 52 closer to the third side 38 in the protruding portion 35. To do. In the example shown in FIG. 6, the outer circumferences of the pair of separators 30 are joined at seven locations of the joining points 50 o to 50 u. The corners 52 at both ends provided on the front edge 32 of the separator 30 are joined by the joining points 50p and 50r, and the third side 38 is formed at the protrusion 35 provided on the front edge 32 of the separator 30 by the joining point 50o. The corner portion 52 closer to is joined.
このような接合態様および搬送態様の場合においても、袋詰電極２０を搬送するときにセパレータ３０のめくれが発生せず、セパレータ３０が折れ曲がることを防止できる。このため、検査工数が不要であり、廃棄に伴う材料費の増大という問題も生じない。この結果、袋詰電極２０の製造の効率化を図り、もって、電池全体の製造の効率化を図ることができる。 Even in the case of such a joining mode and a transport mode, the separator 30 is not turned over when the packaged electrode 20 is transported, and the separator 30 can be prevented from being bent. For this reason, the inspection man-hour is unnecessary, and the problem of increase in material cost accompanying disposal does not occur. As a result, the manufacturing efficiency of the packaged electrode 20 can be improved, and the manufacturing efficiency of the entire battery can be improved.
上述した実施形態では、一対のセパレータ３０の端部同士を溶着によって接合しているが、接合する手段については溶着に限定されない。圧着、接着または溶接の手段を適用することができる。さらに、図７に示すように、テープ部材を用いて接合することができる。 In the embodiment described above, the ends of the pair of separators 30 are joined by welding, but the means for joining is not limited to welding. Crimping, gluing or welding means can be applied. Furthermore, as shown in FIG. 7, it can join using a tape member.
図７は、一対のセパレータ３０の端部同士をテープ部材３１０によって接合している様子を示す図である。 FIG. 7 is a diagram illustrating a state in which the end portions of the pair of separators 30 are joined by the tape member 310.
袋詰電極２０の製造装置１００における接合部３００は、一対のセパレータ３０の外側からテープ部材３１０を角部５２に重なるように貼り付けて一対のセパレータ３０の端部同士を接合する。接合部３００は、テープ部材３１０を巻回した貼り付けローラ３１１を有する。貼り付けローラ３１１は、一対のセパレータ３０の外側からテープ部材３１０を押えつつ回転移動し、テープ部材３１０を角部５２に重なるように貼り付ける。 The joining part 300 in the manufacturing apparatus 100 of the packaged electrode 20 is bonded to the end portions of the pair of separators 30 by affixing the tape member 310 to the corners 52 from the outside of the pair of separators 30. The joining part 300 has an affixing roller 311 around which the tape member 310 is wound. The affixing roller 311 rotates while pressing the tape member 310 from the outside of the pair of separators 30 and affixes the tape member 310 so as to overlap the corner portion 52.
このようなテープ部材３１０を貼り付ける技術を適用して、一対のセパレータ３０の端部同士を簡単に接合できる。 By applying such a technique for attaching the tape member 310, the ends of the pair of separators 30 can be easily joined.
１０ リチウムイオン二次電池、
２０ 袋詰電極、
３０ セパレータ、
３１ 側方縁、
３２ 前方縁、
３３ 後方縁、
３５ 突出部、
３６ 一辺、
３７ 他辺、
３８ 一辺と他辺との間の第三の辺、
４０ 電極、
４２ タブ部、
５０ａ〜５０ｕ 接合点、
５２ 角部、
６０ 外装材、
１００ 製造装置、
２００ 積層部、
２１０、２２０ 積層ドラム、
２３０ 電極搬入部、
３００ 接合部、
３０１ 溶着治具、
３０２ 溶着ヘッド、
３０３ 溶着チップ、
３１０ テープ部材、
３１１ 貼り付けローラ、
４００ 搬送部。
10 Lithium ion secondary battery,
20 Packed electrodes,
30 separator,
31 lateral edges,
32 Front edge,
33 Rear edge,
35 protrusion,
36.
37 Other side,
38 The third side between one side and the other side,
40 electrodes,
42 Tab part,
50a-50u junction,
52 corners,
60 exterior materials,
100 manufacturing equipment,
200 stacking section,
210, 220 laminated drum,
230 electrode carry-in part,
300 joints,
301 welding jig,
302 welding head,
303 welding tips,
310 tape member,
311 sticking roller,
400 Conveying unit.
Claims (8)
前記一対のセパレータの間に前記電極を挟み込む積層部と、
前記電極が挟み込まれた前記一対のセパレータの端部同士を接合する接合部と、
前記電極が挟み込まれ前記接合部によって端部同士が接合された前記一対のセパレータを搬送する搬送部と、を有し、
前記セパレータは、電池セルの外装材によって挟み込まれる突出部を有し、
前記積層部は、前記電極のタブ部が前記一対のセパレータの一辺から突出するように積層し、
前記搬送部は、前記電極が挟み込まれた前記一対のセパレータを、前記一辺に向かい合い前記突出部が設けられる他辺の側が前方側となるように搬送してなり、
前記接合部は、前記一対のセパレータの外周のうち前記搬送部によって搬送するときに前方側となる部分に設けられ、前記他辺における両端の角部であって前記セパレータにおける２辺が交差することによって形成される角部を少なくとも含むように接合し、かつ、前記突出部における両端の角部を含むように接合する、袋詰電極の製造装置。 A device for manufacturing a packaged electrode formed by sandwiching an electrode between a pair of separators and partially joining the outer periphery of the pair of separators,
A laminated portion that sandwiches the electrode between the pair of separators;
A joining part for joining the ends of the pair of separators sandwiched between the electrodes;
A transport unit that transports the pair of separators, in which the electrodes are sandwiched and ends are joined to each other by the joint,
The separator has a protruding portion that is sandwiched between battery cell exterior materials,
The laminated portion is laminated so that the tab portion of the electrode protrudes from one side of the pair of separators,
The transport unit transports the pair of separators sandwiched with the electrodes so that the other side facing the one side and the protruding portion is provided on the front side,
The joint portion is provided in a portion on the front side when transported by the transport portion of the outer periphery of the pair of separators, and is a corner portion at both ends on the other side, and two sides of the separator intersect. A device for manufacturing a packaged electrode, which is joined so as to include at least the corners formed by the above-described method and so as to include corners at both ends of the protruding portion .
前記一対のセパレータの間に前記電極を挟み込む積層部と、
前記電極が挟み込まれた前記一対のセパレータの端部同士を接合する接合部と、
前記電極が挟み込まれ前記接合部によって端部同士が接合された前記一対のセパレータを搬送する搬送部と、を有し、
前記セパレータは、電池セルの外装材によって挟み込まれる突出部を有し、
前記積層部は、前記電極のタブ部が前記一対のセパレータの一辺から突出するように積層し、
前記搬送部は、前記電極が挟み込まれた前記一対のセパレータを、前記一辺と前記一辺に向かい合い前記突出部が設けられる他辺との間の第三の辺の側が前方側となるように搬送してなり、
前記接合部は、前記一対のセパレータの外周のうち前記搬送部によって搬送するときに前方側となる部分に設けられ、前記第三の辺における両端の角部であって前記セパレータにおける２辺が交差することによって形成される角部を少なくとも含むように接合し、かつ、前記突出部において前記第三の辺に近い方の角部を含むように接合する、袋詰電極の製造装置。 A device for manufacturing a packaged electrode formed by sandwiching an electrode between a pair of separators and partially joining the outer periphery of the pair of separators,
A laminated portion that sandwiches the electrode between the pair of separators;
A joining part for joining the ends of the pair of separators sandwiched between the electrodes;
A transport unit that transports the pair of separators, in which the electrodes are sandwiched and ends are joined to each other by the joint,
The separator has a protruding portion that is sandwiched between battery cell exterior materials,
The laminated portion is laminated so that the tab portion of the electrode protrudes from one side of the pair of separators,
The transport unit transports the pair of separators sandwiched between the electrodes so that the third side between the one side and the other side facing the one side is provided on the front side. And
The joint portion is provided in a portion on the front side of the outer periphery of the pair of separators when transported by the transport unit, and is a corner portion at both ends of the third side, and two sides of the separator intersect. An apparatus for manufacturing a packaged electrode , which is joined so as to include at least a corner portion formed by doing and so as to include a corner portion closer to the third side in the protruding portion .
前記一対のセパレータの間に前記電極を挟み込む積層工程と、 A laminating step of sandwiching the electrode between the pair of separators;
前記電極が挟み込まれた前記一対のセパレータの端部同士を接合する接合工程と、 A bonding step of bonding ends of the pair of separators sandwiched between the electrodes;
前記接合工程の後に、前記電極が挟み込まれた前記一対のセパレータを搬送する搬送工程と、を有し、 A transporting step for transporting the pair of separators sandwiched between the electrodes after the joining step;
前記セパレータは、電池セルの外装材によって挟み込まれる突出部を有し、 The separator has a protruding portion that is sandwiched between battery cell exterior materials,
前記積層工程において、前記電極のタブ部が前記一対のセパレータの一辺から突出するように積層し、 In the laminating step, laminating so that the tab portion of the electrode protrudes from one side of the pair of separators,
前記搬送工程において、前記電極が挟み込まれた前記一対のセパレータを、前記一辺に向かい合い前記突出部が設けられる他辺の側が前方側となるように搬送してなり、 In the transport step, the pair of separators sandwiched with the electrodes are transported so that the other side facing the one side and the protruding portion is provided is the front side,
前記接合工程において、前記一対のセパレータの外周のうち引き続いて行われる前記搬送工程において搬送するときに前方側となる部分に設けられ、前記他辺における両端の角部であって前記セパレータにおける２辺が交差することによって形成される角部を少なくとも含むように接合し、かつ、前記突出部における両端の角部を含むように接合する、袋詰電極の製造方法。 In the joining step, provided at a portion on the front side when transported in the transporting step that is continuously performed on the outer periphery of the pair of separators, the corners at both ends on the other side, and two sides of the separator A method for manufacturing a packaged electrode, wherein the electrodes are joined so as to include at least corners formed by intersecting, and are joined so as to include corners at both ends of the protruding portion.
前記一対のセパレータの間に前記電極を挟み込む積層工程と、 A laminating step of sandwiching the electrode between the pair of separators;
前記電極が挟み込まれた前記一対のセパレータの端部同士を接合する接合工程と、 A bonding step of bonding ends of the pair of separators sandwiched between the electrodes;
前記接合工程の後に、前記電極が挟み込まれた前記一対のセパレータを搬送する搬送工程と、を有し、 A transporting step for transporting the pair of separators sandwiched between the electrodes after the joining step;
前記セパレータは、電池セルの外装材によって挟み込まれる突出部を有し、 The separator has a protruding portion that is sandwiched between battery cell exterior materials,
前記積層工程において、前記電極のタブ部が前記一対のセパレータの一辺から突出するように積層し、 In the laminating step, laminating so that the tab portion of the electrode protrudes from one side of the pair of separators,
前記搬送工程において、前記電極が挟み込まれた前記一対のセパレータを、前記一辺と前記一辺に向かい合い前記突出部が設けられる他辺との間の第三の辺の側が前方側となるように搬送してなり、 In the transporting step, the pair of separators sandwiched with the electrodes are transported so that the side of the third side between the one side and the other side facing the one side is provided on the front side. And
前記接合工程において、前記一対のセパレータの外周のうち引き続いて行われる前記搬送工程において搬送するときに前方側となる部分に設けられ、前記第三の辺における両端の角部であって前記セパレータにおける２辺が交差することによって形成される角部を少なくとも含むように接合し、かつ、前記突出部において前記第三の辺に近い方の角部を含むように接合する、袋詰電極の製造方法。 In the joining step, provided in a portion that becomes the front side when transported in the transport step that is continuously performed among the outer peripheries of the pair of separators, corner portions at both ends of the third side, and in the separator A method for manufacturing a packaged electrode, wherein the electrodes are joined so as to include at least a corner formed by intersecting two sides, and are joined so as to include a corner closer to the third side in the protruding portion. .
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