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CN1362926A - 热封接装置、热封接方法、压纹成形方法、工件压紧装置和工件 - Google Patents

热封接装置、热封接方法、压纹成形方法、工件压紧装置和工件 Download PDF

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Publication number
CN1362926A
CN1362926A CN01800127A CN01800127A CN1362926A CN 1362926 A CN1362926 A CN 1362926A CN 01800127 A CN01800127 A CN 01800127A CN 01800127 A CN01800127 A CN 01800127A CN 1362926 A CN1362926 A CN 1362926A
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CN
China
Prior art keywords
workpiece
layer
sealing
mold
heat
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
CN01800127A
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English (en)
Other versions
CN1280155C (zh
Inventor
福田淳
奥下正隆
山田一树
山下力也
宫间洋
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Dai Nippon Printing Co Ltd
Original Assignee
Dai Nippon Printing Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from JP2000017337A external-priority patent/JP4414040B2/ja
Priority claimed from JP2000017343A external-priority patent/JP4414041B2/ja
Priority claimed from JP2000037490A external-priority patent/JP5042402B2/ja
Application filed by Dai Nippon Printing Co Ltd filed Critical Dai Nippon Printing Co Ltd
Publication of CN1362926A publication Critical patent/CN1362926A/zh
Application granted granted Critical
Publication of CN1280155C publication Critical patent/CN1280155C/zh
Anticipated expiration legal-status Critical
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/02—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
    • B29C65/18—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated tools
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/03—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
    • B29C48/07—Flat, e.g. panels
    • B29C48/08—Flat, e.g. panels flexible, e.g. films
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/16—Articles comprising two or more components, e.g. co-extruded layers
    • B29C48/18—Articles comprising two or more components, e.g. co-extruded layers the components being layers
    • B29C48/19—Articles comprising two or more components, e.g. co-extruded layers the components being layers the layers being joined at their edges
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/16—Articles comprising two or more components, e.g. co-extruded layers
    • B29C48/18—Articles comprising two or more components, e.g. co-extruded layers the components being layers
    • B29C48/21—Articles comprising two or more components, e.g. co-extruded layers the components being layers the layers being joined at their surfaces
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/25—Component parts, details or accessories; Auxiliary operations
    • B29C48/30—Extrusion nozzles or dies
    • B29C48/305—Extrusion nozzles or dies having a wide opening, e.g. for forming sheets
    • B29C48/307—Extrusion nozzles or dies having a wide opening, e.g. for forming sheets specially adapted for bringing together components, e.g. melts within the die
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C53/00—Shaping by bending, folding, twisting, straightening or flattening; Apparatus therefor
    • B29C53/16—Straightening or flattening
    • B29C53/18—Straightening or flattening of plates or sheets
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/02—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/02—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
    • B29C65/40—Applying molten plastics, e.g. hot melt
    • B29C65/405—Applying molten plastics, e.g. hot melt characterised by the composition of the applied molten plastics
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/01—General aspects dealing with the joint area or with the area to be joined
    • B29C66/05—Particular design of joint configurations
    • B29C66/10—Particular design of joint configurations particular design of the joint cross-sections
    • B29C66/11—Joint cross-sections comprising a single joint-segment, i.e. one of the parts to be joined comprising a single joint-segment in the joint cross-section
    • B29C66/112—Single lapped joints
    • B29C66/1122—Single lap to lap joints, i.e. overlap joints
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/01—General aspects dealing with the joint area or with the area to be joined
    • B29C66/05—Particular design of joint configurations
    • B29C66/10—Particular design of joint configurations particular design of the joint cross-sections
    • B29C66/13—Single flanged joints; Fin-type joints; Single hem joints; Edge joints; Interpenetrating fingered joints; Other specific particular designs of joint cross-sections not provided for in groups B29C66/11 - B29C66/12
    • B29C66/133—Fin-type joints, the parts to be joined being flexible
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/01—General aspects dealing with the joint area or with the area to be joined
    • B29C66/346—Making joints having variable thicknesses in the joint area, e.g. by using jaws having an adapted configuration
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/40—General aspects of joining substantially flat articles, e.g. plates, sheets or web-like materials; Making flat seams in tubular or hollow articles; Joining single elements to substantially flat surfaces
    • B29C66/41—Joining substantially flat articles ; Making flat seams in tubular or hollow articles
    • B29C66/43—Joining a relatively small portion of the surface of said articles
    • B29C66/433—Casing-in, i.e. enclosing an element between two sheets by an outlined seam
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/80—General aspects of machine operations or constructions and parts thereof
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/80—General aspects of machine operations or constructions and parts thereof
    • B29C66/81—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps
    • B29C66/814—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps
    • B29C66/8141—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps characterised by the surface geometry of the part of the pressing elements, e.g. welding jaws or clamps, coming into contact with the parts to be joined
    • B29C66/81427—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps characterised by the surface geometry of the part of the pressing elements, e.g. welding jaws or clamps, coming into contact with the parts to be joined comprising a single ridge, e.g. for making a weakening line; comprising a single tooth
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/80—General aspects of machine operations or constructions and parts thereof
    • B29C66/81—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps
    • B29C66/814—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps
    • B29C66/8141—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps characterised by the surface geometry of the part of the pressing elements, e.g. welding jaws or clamps, coming into contact with the parts to be joined
    • B29C66/81431—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps characterised by the surface geometry of the part of the pressing elements, e.g. welding jaws or clamps, coming into contact with the parts to be joined comprising a single cavity, e.g. a groove
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/80—General aspects of machine operations or constructions and parts thereof
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    • B29C66/814—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps
    • B29C66/8141—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps characterised by the surface geometry of the part of the pressing elements, e.g. welding jaws or clamps, coming into contact with the parts to be joined
    • B29C66/81433—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps characterised by the surface geometry of the part of the pressing elements, e.g. welding jaws or clamps, coming into contact with the parts to be joined being toothed, i.e. comprising several teeth or pins, or being patterned
    • B29C66/81435—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps characterised by the surface geometry of the part of the pressing elements, e.g. welding jaws or clamps, coming into contact with the parts to be joined being toothed, i.e. comprising several teeth or pins, or being patterned comprising several parallel ridges, e.g. for crimping
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/80—General aspects of machine operations or constructions and parts thereof
    • B29C66/81—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps
    • B29C66/818—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the cooling constructional aspects, or by the thermal or electrical insulating or conducting constructional aspects of the welding jaws or of the clamps ; comprising means for compensating for the thermal expansion of the welding jaws or of the clamps
    • B29C66/8181—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the cooling constructional aspects, or by the thermal or electrical insulating or conducting constructional aspects of the welding jaws or of the clamps ; comprising means for compensating for the thermal expansion of the welding jaws or of the clamps characterised by the cooling constructional aspects
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/80—General aspects of machine operations or constructions and parts thereof
    • B29C66/83—General aspects of machine operations or constructions and parts thereof characterised by the movement of the joining or pressing tools
    • B29C66/832—Reciprocating joining or pressing tools
    • B29C66/8322—Joining or pressing tools reciprocating along one axis
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/90—Measuring or controlling the joining process
    • B29C66/91—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux
    • B29C66/919—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux characterised by specific temperature, heat or thermal flux values or ranges
    • B29C66/9192—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux characterised by specific temperature, heat or thermal flux values or ranges in explicit relation to another variable, e.g. temperature diagrams
    • B29C66/91921—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux characterised by specific temperature, heat or thermal flux values or ranges in explicit relation to another variable, e.g. temperature diagrams in explicit relation to another temperature, e.g. to the softening temperature or softening point, to the thermal degradation temperature or to the ambient temperature
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
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    • H01M10/04—Construction or manufacture in general
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    • H—ELECTRICITY
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    • H01M50/126—Primary casings; Jackets or wrappings characterised by the material having a layered structure comprising three or more layers
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    • H01M50/55—Terminals characterised by the disposition of the terminals on the cells on the same side of the cell
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    • B—PERFORMING OPERATIONS; TRANSPORTING
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    • B29C2793/009—Shaping techniques involving a cutting or machining operation after shaping
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Abstract

在具有接头4的聚合物电池本体2容纳在外包装体5内,利用热封接装置10对该外包装体5的端部进行热封接。热封接装置10配有一对封接头10a、10b,各封接头10a、10b具有封接面12。在各封接头10a、10b的封接面12上,在与位于外包装体5的端部的接头4相当的部分上形成凹部11。

Description

热封接装置、热封接方法、压纹成 形方法、工件压紧装置和工件
技术领域
本发明涉及一种用于制造聚合物电池的热封接装置、热封接方法、压纹成形方法、工件压紧装置和工件。
背景技术
聚合物电池也被称为锂二次电池，是利用锂离子的移动产生电流的电池。这样的聚合物电池由具有高分子聚合物电解质、正极·负极活性物质的聚合物电池本体、容纳该电池本体的外包装体构成。
聚合物电池的用途主要有：个人电脑、便携式终端装置(便携电话、PDA等)、摄像机、电动汽车、储能用蓄电池、机器人、卫星等。
作为聚合物电池的外包装体，采用对金属进行压力加工形成圆筒状或长方体的容器状金属制罐、或将由基体材料、铝、密封剂层构成的层压体制成袋状。
但是，作为聚合物电池的外包装体，存在以下问题。在金属制罐中，由于容器外壁是刚性的，所以确定了电池本身的形状。因此，为了使硬的一侧的部分设计得与聚合物电池相吻合，所以用于聚合物电池的硬的一侧的部分的尺寸由电池所决定，因而其形状的自由度小。
因此，开发出了将层压体制成袋状以容纳聚合物电池本体的袋式外包装体，或将前述层压体压力成型形成凹部、在凹部内容纳聚合物电池本体的压纹式外包装体。压纹式外包装体与袋式外包装体相比更为紧凑。任何类型的外包装体，聚合物电池的防湿性和耐穿透性等的强度、绝缘性等作为聚合物电池的外包装体都是不可缺少的。
并且，聚合物电池本体容纳在外包装体内，其周边被热封接起来形成密封包装，但是，在聚合物电池本体中，从电池本体内部将起电的电流引出到外部的电极(接头)以板状安装。在外包装体被密封包装的情况下，以夹持电极(接头)的状态对外包装体进行热封接。然而，由于接头的厚度为50～200μm，所以夹持接头的外包装体的封接部在接头两端的剖面部分中，由于外包装体热封接层的树脂形成得比接头厚而形成的阶梯不能被填平，从而产生缺陷。
发明的公开
本发明是考虑到上述问题而提出的，其目的是提供一种可以制作高精度聚合物电池的热封接装置、热封接方法、压纹成形方法、工件压紧装置和工件。
本发明为一种对容纳具有接头的聚合物电池本体的外包装体的端部进行热封接的热封接装置，其特征为，配有分别具有封接面的一对封接头，在至少一个封接头的封接面中与位于外包装体端部的接头相应部分上形成凹部。
本发明为一种热封接方法，其特征为，包括：以使接头位于未封接部分上的方式，把具有接头的聚合物电池本体从前述未封接部分容纳到一边未封接的袋式外包装体中的步骤，和用一对封接头热封接外包装体的未封接部分的步骤，所述一对封接头为，在具有封接面的一对封接头中，至少一个封接头的封接面中与接头相应的区域上形成有凹部。
本发明为一种热封接方法，其特征为，包括：在压纹式外包装体中容纳具有接头的聚合物电池本体的步骤，和用一对封接头热封接外包装体的边缘部分的步骤，所述一对封接头为，在分别具有封接面的一对封接头中，至少一个封接头的封接面中与接头相应的区域上形成凹部。
本发明为一种压纹成形方法，采用压纹成形装置对工件进行压纹成形，所述压纹成形装置配有阳模和阴模，所述阳模具有对应于具有多个制品部的工件中的制品部外周设置的阳模用波纹、设置在阳模用波纹内侧上的成形凸起部、设置在成形凸起部和阳模用波纹之间的阳模用压紧部，所述阴模具有对应于阳模用波纹的阴模用波纹、对应于成形凸起部的成形凹部、对应于阳模用压紧部的阴模用压紧部，其特征为，包括：预先在工件上对应于阳模用压紧部和阴模用压紧部之间的部分形成切口的步骤，在阳模和阴模之间对工件进行压纹成形而形成压纹部的步骤。
本发明为一种由压纹成形装置进行压纹成形的工件，所述压纹成形装置配有阳模和阴模，所述阳模具有对应于具有多个制品部的工件中的制品部外周设置的阳模用波纹、设置在阳模用波纹内侧上的成形凸起部、设置在成形凸起部和阳模用波纹之间的阳模用压紧部，所述阴模具有对应于阳模用波纹的阴模用波纹、对应于成形凸起部的成形凹部、对应于阳模用压紧部的阴模用压紧部，其特征为，在工件上对应于阳模用压紧部和阴模用压紧部之间的部分形成切口。
本发明为一种对通过压纹成形成形出压纹部的工件中压纹部以外的部分进行压紧的工件压紧装置，其特征为，具备：具有容纳工件的压纹部的容纳部、配置在工件一侧的第一金属模具，配置在工件另一侧上、在其与第一金属模具之间压紧工件的第二金属模具，对第一金属模具或第二金属模具中的至少任何一个进行加热。
附图说明
图1是说明根据本发明的聚合物电池包装用热封接装置的形状的图示。
图2是表示采用根据本发明的聚合物的电池包装用热封接装置获得的聚合物电池的图示。
图3是说明聚合物电池的袋式外包装体的透视图。
图4是说明聚合物电池的压纹式外包装体的透视图。
图5是说明压纹式外包装体的成形步骤的图示。
图6是说明用于聚合物外包装体的层压体结构例的剖视图。
图7是说明制造聚合物电池的外包装体的层压体的夹层层压装置的示意图。
图8是说明制造聚合物电池外包装体的层压体的双组分挤压层压装置的示意图。
图9是表示用于粘结聚合物电池外包装体和接头的粘结性薄膜的图示。
图10是表示包含利用比较例的热封接装置进行热封接的接头的聚合物电池的图示。
图11是表示用于实施根据本发明的压纹成形方法的压纹成形装置的图示。
图12是表示具有细长切口的工件的图示。
图13是表示具有圆弧状切口的工件的图示。
图14是表示采用包装体的聚合物电池的图示。
图15是表示包装体的层状结构的图示。
图16是表示具有切口的工件的变形例的图示。
图17是表示根据本发明的工件的压紧装置的图示。
具体实施方式
第一实施形态
本发明涉及一种热封接装置，该热封接装置在将聚合物电池本体容纳到外包装体内、通过夹持接头并对外包装体进行热封接而进行密封封接时，可防止由于接头较厚而使封接产生缺陷。即，涉及可对于接头的端部有效地施加使封接的稳定所必须的压力和温度的封接头的形状，以下，利用附图等进行详细的说明。
图1(a)是说明聚合物电池包装用封接头形状的透视图，图1(b)是表示热封接状态的示意图。
图2(a)是采用聚合物电池包装用封接头获得的聚合物电池的透视图，图2(b)是图2(a)的X1-X1剖视图，图2(c)是图2(b)的Y1部分的放大图。图3是说明聚合物电池的袋式外包装体的透视图。图4是说明聚合物电池的压纹式外包装体的透视图。图5(a)是说明压纹式外包装体的成形方法的透视图，图5(b)是表示压纹成形外包装体本体的图示，图5(c)是图5(b)的X3-X3剖视图，图5(d)是图5(c)的Y2的放大图。图6是说明用于本发明的聚合物电池用外包装体的层压体的结构的例子的剖视图。图7是说明制造聚合物电池用外包装体的层压体的夹层层压步骤的示意图。图8是说明制造聚合物电池用外包装体的层压体的双组分挤压层压步骤的示意图。图9是说明粘结聚合物电池用外包装体和接头的粘结性薄膜的装配方法的透视图。
聚合物电池是按下述方式制造的。首先，采用例如尼龙/粘结层/铝/粘结层/聚乙烯构成的层压体，制成一边呈开口状态的袋状，形成聚合物电池用外包装体。其次，以使聚合物电池本体的接头部位于开口部的方式，从该开口部插入聚合物电池本体，通过热封接开口部，制造密封的聚合物电池。过去，这样的热封接中采用的封接头的封接面是平的。当采用平的封接头进行热封接时，如图10(a)或图10(b)所示，在从聚合物电池1的外包装体5凸出的接头4的两端部上，外包装体5的热封接树脂24填充由于接头的厚度而造成的阶梯，从而产生封接缺陷(气孔)9d。为了防止封接缺陷9d的发生，必须对热封接温度、封接压力等条件进行严格管理，从而作业适于范围小，难以稳定生产。
在图10(a)、(b)中，外包装体5除热封接树脂24外，还具有基体材料层，阻挡层22和粘结树脂层23。
本发明的发明人锐意研究可稳定夹持接头4的边的热封接的方法。
结果开发出如图1(a)所示的热封接装置10。热封接装置10配有具有各封接面12的一对封接头10a、10b，在该封接头10a、10b的封接面12上形成凹部11。该凹部11对应于位于外包装体5的端部上的接头4设置。
在图1(a)、(b)中，在两个封接头10a、10b的封接面12上设有凹部11，但也可以只在一个封接头、例如封接头10a上设置凹部11。
重复实验的结果为，在一对封接头10a、10b上都设置凹部11的情况下，凹部11的深度m为接头4的厚度的1/3～一个接头4的厚度范围，凹部11的宽度n为接头4的宽度+0.2～接头4的宽度+2.0mm的范围，优选为接头4的宽度+0.3～接头4的宽度+1.0mm的范围。
在一般的聚合物电池1中接头4的厚度大约为50～200μm左右，宽度大约为5～20mm左右。
当采用具有本发明的聚合物电池包装用封接头10a、10b的热封接装置10制造聚合物电池1时，存在如图2和图3所示，采用袋式外包装体5的情况，和如图4所示，对聚合物电池包装材料进行压力成形，制造具有容纳聚合物电池本体3的压纹部7的外包装体5，采用该压纹式外包装体5的情况。袋式外包装体5如图3所示，在一边上具有为封接状态的开口部5a，从该开口部5a将聚合物电池本体2容纳到外包装体5内，前述开口部5a与接头4同时热封接。在图3中的外包装体5是采用轴枕方式制造的，但是，也可以采用3面封接、4面封接等制袋方式制造。
并且，在外包装体5为压纹式的情况下，如图4(d)所示，在形成压纹部7的外包装本体5p的压纹部7中容纳聚合物电池本体2，被覆上盖材5t并对外包装本体5p和盖材5t的周边进行热封接。在这里，外包装体5由外包装本体5p和盖材5t构成。而且，在压纹式外包装体5中，存在：仅压纹成形外包装体5的单侧(图4(a))的外包装体5，在外包装体5的盖材5t相应的包装材料上也进行压纹成形并且进行4方热封接的外包装体5(图4(b))，在外包装体5的两侧上成形出压纹部7并且进行3方热封接的外包装体5(图4(c))。外包装体5的本体5p和盖材5t由后面所述的任何一个层压体形成包装材料所构成。
作为外包装体5的热封接方法，包括：使最内层热熔融、优选地使最内层彼此封接的、例如加热流体(水、油等)或加热器内部热板法，利用通电的脉冲法，施加高频电压、利用薄膜自身发热的高频封接法，利用超声波振动的超声波封接法，利用火焰或热风加热后进行封接的方法等。并且，在热封接后进行冷却的情况下，可以采用具有与热封接装置10的凹部11相同凹部的冷却装置。
但是，如上所述，如图2至图4所示，聚合物电池1包括聚合物电池本体2和包装聚合物电池本体的外包装体5，但是，其中的聚合物电池本体2由具有接头(电极)4的原电池(蓄电部)3构成。
并且，聚合物电池本体2和原电池3包括：正极(铝、镍)、正极活性物质层(金属氧化物、碳黑、金属硫化物、电解液、聚丙乙烯等的高分子正极材料)、电解质层(丙撑碳酸脂、乙烯碳酸脂、二甲基碳酸盐、乙撑碳酸二甲脂等碳酸盐系电解液、由锂盐等构成的无机固体电解质、凝胶电解质)、负极活性物质(锂金属、合金、碳、电解液、聚丙烯等高分子负极材料)、负极集电材料(铜、镍、不锈钢)。
下面，说明形成聚合物电池1的外包装体5的层压体的材料。
作为构成外包装体5的包装材料至少由基体材料层、阻挡层、最内层构成，在本发明中，其特征为在阻挡层的两面上设置有后面所述的化学转换处理层。
并且，在最内层的形成或层压方法中，可采用干式层压方法、热层压方法、夹层层压方法、双组分挤压层压方法等。并且，采用前述各层压方法获得的层压体，通过其后的加热，提高阻挡层和最内层的粘结强度，可防止由于利用作为聚合物电池的结构要素的电解质和水分的反应生成的氟化氢而引起的脱层。
聚合物电池用包装材料形成包装聚合物电池本体2的外包装体5，该外包装体5有如图2和图3所示的袋式外包装体和如图4所示的压纹式外包装体。在袋式外包装体5中有三面封接、四面封接和轴枕式等袋状形式，图2和图3表示轴枕式的外包装体5。
并且，压纹式外包装体5存在：如图4(a)所示，在单侧具有压纹部7、容纳聚合物电池本体2并对周边的四面进行热封接的外包装体5；如图4(b)所示，在两侧具有压纹7、容纳聚合物电池本体2并对周边的四面进行热封接的外包装体。并且，如图4(c)所示，还存在通过消去折叠部5b在两侧形成压纹部7、容纳聚合物电池本体2且对三面进行热封接的形式。
如图4(d)、(e)所示，在外包装体5于单侧上具有压纹部7的情况下，外包装体5包括：具有侧壁8的压纹部7、具有连接在侧壁上8上的凸缘部9的外包装本体5p、和盖材5t。
其中外包装体5的外包装体本体5p，如图5(a)-(d)所示，是将层压体20插入到具有阳模31和阴模32的金属模具30之间，通过在阳模31和阴模32之间进行挤压而获得。在这种情况下，外包装体本体5p由具有侧壁8的压纹部7和凸缘部9构成。
外包装体5如图6(a)-(d)所示，由至少具有基体材料层21、第一化学转换处理层25a、阻挡层22、第二化学转换处理层25b、最内层24的层压体20构成，前述最内层24通过夹层层压法层压而成。而且，最内层24由未拉伸的聚乙烯膜(以下称PE)或未拉伸的聚丙烯膜构成。在压纹式的外包装体5的情况下，为了形成构成包装聚合物电池本体2的容纳部的压纹部7，需要成形性能良好的层压体20。下面，对构成层压体20的各层的材料和对其的胶粘进行说明。
根据本发明的基体材料层21由拉伸聚酯或尼龙薄膜构成，这时，作为聚酯树脂，可举出聚对苯二甲酸乙二醇酯、聚对苯二甲酸丁二醇酯、聚萘二甲酸乙二醇酯、聚萘二甲酸丁二醇酯、共聚聚酯、聚碳酸酯等。并且，作为尼龙，可举出聚酰胺树脂、即尼龙6、尼龙6，6、尼龙6和尼龙6，6d共聚物、尼龙6，10、聚己二酰间苯二甲胺(MXD6)等。
在用于聚合物电池的情况下，由于基体材料层21是与硬侧部分直接接触的部位，所以优选为基本上具有绝缘性的树脂层。考虑到薄膜单体中气孔的存在和加工时生产气孔等问题，基体材料层必须在6μm以上的厚度，优选厚度为12～25μm。
本发明中，为了提高基体材料层21的耐气孔性和作为电池外包装体时的绝缘性，也可将其层压。
在对基体材料层21层压体化的情况下，基体材料层21包含两层以上的树脂层，各树脂层的厚度为6μm以上，优选为12～25μm。在基体材料层21由两层以上的树脂层构成的情况下，可举出图中未示出的以下1)～7)的基体材料层21。
1)拉伸聚对苯二甲酸乙二醇酯/未拉伸尼龙
2)拉伸尼龙/拉伸聚对苯二甲酸乙二醇酯
并且，包装材料的机械适应性(包装机械、加工机械中的输送稳定性)、表面保护性(耐热性、耐电解质性)、当进行二次加工且聚合物电池用的外包装体为压纹式时，为了压纹时的金属模具和基体材料的摩擦阻力小的目的，优选使基体材料层多层化、在基体材料层表面上设置氟系树脂层、丙烯腈类树脂层和有机硅类树脂层。这样的例子例如可举出：
3)氟系树脂/拉伸聚对苯二甲酸乙二醇酯(氟系树脂是由薄膜状物或液态涂层干燥后形成的)
4)有机硅类树脂/拉伸聚对苯二甲酸乙二醇酯(有机硅类树脂是由薄膜状物或液态涂层干燥后形成的)
5)氟系树脂/拉伸聚对苯二甲酸乙二醇酯/拉伸尼龙
6)有机硅类树脂/拉伸聚对苯二甲酸乙二醇酯/拉伸尼龙
7)丙烯腈类树脂/拉伸尼龙(丙烯腈类树脂是由薄膜状物或液态涂层干燥后硬化而成的。
阻挡层22是用于防止特别是水蒸汽从外部侵入聚合物电池内部的层。作为阻挡层22，为了使热封接和加工适应性(袋装化、压纹成形)稳定化，并且具有耐热封接性，可采用例如厚度为15μm以上的铝、镍等金属。并且，用于阻挡层22的无机化合物例如可举出蒸镀氧化硅、氧化铝等形成的薄膜，但作为阻挡层22优选采用厚度为20～80μm的铝。
对热封接进一步的改进，在聚合物电池1的外包装体5的类型为压纹类型的情况下，为了在压纹成形中不产生裂纹等，本发明的发明人作为阻挡层22采用的铝材为铁含量为0.3～9.0重量％、优选为0.7～2.0重量％。通过这样，与不含铁的铝相比，铝的延展性好，层压体20由于弯曲而产生的气孔少。并且，在成型压纹型外包装体5时，可更容易地形成侧壁8。当阻挡层22中的铁含量不足0.3重量％时，看不到防止气孔产生和改善压纹成形性能的效果，当铝的铁含量超过9.0重量％时，铝的柔软性受到损害，层压体20的制袋性能变差。
并且，通过冷轧制造的铝在退火条件下的柔软性、刚柔性、硬度均发生变化。在本发明中，不采用未为对铝进行退火的硬质产品，而采用对铝进行部分或完全退火处理的软质产品。
铝的柔软性、刚柔性、硬度的程度，即退火的条件应根据加工适应性(袋状化、压纹成形)进行适当的选择。例如，为了防止在压纹成形时的折痕和气孔，可采用对应于成形程度的退火后的软质铝。
并且，根据本发明的发明人锐意研究的结果，通过在作为聚合物电池用包装材料的阻挡层22的铝的表面和里面上进行化学转换处理设置化学转换处理层25a、25b，可制成满足前述包装材料的层压体20。化学转换处理，具体而言，在通过形成磷酸盐、铬酸盐、氟化物、三氮杂苯硫醇化合物等耐酸性覆膜进行压纹成形时，用于防止铝阻挡层22和基体材料层21之间的剥离，并且，用于防止由于聚合物电池1的电解质和水分反应而生成的氟化氢，对阻挡层22的铝表面进行溶解、腐蚀，特别是对存在于铝表面的氧化铝进行溶解、腐蚀。并且，利用化学转换处理提高铝表面的附着性(润湿性)，在压纹成形时和热封接时，可防止基体材料层21和阻挡层22的剥离，可防止由于电解质和水分的反应而产生氟化氢导致铝的内面层上产生剥离。
采用各种物质对铝的表面进行化学转换处理，对其效果进行研究，结果为：前述耐酸性覆膜形成物质中，例如酚醛树脂、氟化铬(3)的化合物、采用三组分的磷酸构成的磷酸铬酸盐处理效果良好。
前述化学转换处理在聚合物电池1的外包装体5为袋式的的情况下仅施加到阻挡层22的最内层24侧的单面。
聚合物电池1的外包装体5为压纹式的情况下，通过在铝阻挡层22的两面上进行化学转换处理，可防止压纹成形时的阻挡层22和基体材料层21之间的剥离。在阻挡层22的两面上进行化学转换处理后的层压体20也可用于袋式外包装体5。
作为聚合物电池用包装材料的最内层的形成方法，如图6(a)所示，由基体材料层21/第一粘结层26a/第一化学转换处理层25a/阻挡层22/第二化学转换处理层25b制成中间层压体20a，在该中间层压体20a的化学转换处理层22b侧的面上，通过第二粘结层26对最内层24进行干式层压并形成层压体20。
作为聚合物电池包装用材料的层压体20的其它形成方法，如图6(b)所示，在中间层压体20a的第二化学转换处理层25b侧的面上形成酸改性聚烯烃层27后，作为最内层24可以利用热层压法层压聚烯烃薄膜制成。
作为聚合物电池用包装材料的层其它形成方式，如图6(c)所示，也可以在中间层压体20a的第二化学转换处理层25b侧的面上，作为最内层24，以酸改性聚烯烃树脂作为粘结树脂进行挤压并利用夹层层压法层压聚烯烃薄膜制成。图7中示出了夹层层压装置。
如图7所示，在夹层层压装置40中，从供应辊40a供应中间层压体20a，同时，从薄膜辊46a供应聚烯烃薄膜46，中间层压体20a和聚烯烃薄膜46输送到冷却辊44和压接辊45之间。这是，在中间层压体20a和聚烯烃薄膜46之间输送从挤压机41经过模具42供应的酸改性聚烯烃薄膜树脂43，粘结中间层压体20a和聚烯烃薄膜46以获得层压体20。层压体20被卷取到层压体辊47上。
作为聚合物电池用包装材料的层压体的其它形成方式，如图6(d)所示，也可以在中间层压体20a的第二化学转换处理层25b侧的面上，采用作为粘结树脂的酸改性聚烯烃树脂，作为最内层采用聚烯烃树脂，利用双组份挤压法对它们进行层压。图8表示双组份挤压层压装置。
如图8所示，在双组份挤压层压装置50中，从供应辊50a供应中间层压体20a，同时从挤压机51a、51b通过双组份挤压模具52将由酸改性聚烯烃树脂和聚烯烃树脂构成的双组份熔融树脂膜53送到冷却辊54和压接辊55之间。这时，粘结中间层压体50a和双组份熔融树脂膜53并获得层压体20。层压体20被卷取到层压体辊57上。
在前述最内层24的形成方法中，在热层压法、夹层层压法和双组份挤压层压法中的粘结树脂或粘结薄膜的酸改性聚烯烃为聚丙烯的情况下，最内层24的树脂为聚丙烯类树脂。并且，在粘结树脂或粘结薄膜的酸改性聚烯烃为酸改性聚乙稀的情况下，最内层24的树脂为聚乙烯类树脂。
在第二化学转换处理层25b上形成最内层24制造层压体20的情况下，存在酸改性聚烯烃树脂相对于第二化学转换处理层25b未充分粘结的问题。在这种情况下，在第二化学转换处理层25b中，利用滚筒涂布法等涂敷酸改性聚烯烃的乳液，例如，在酸改性聚烯烃为酸改性聚丙烯的情况下，可以考虑在干燥之后，以170～200℃的温度进行烘烤后，将酸改性聚丙烯作为粘结树脂，对形成最内层的聚丙烯薄膜进行夹层层压，但是烘烤的加工速度非常慢，生产效率低下。
因此，对于不进行酸改性聚烯烃的涂敷和烘烤、表现出稳定的粘结强度的层压方法所做的锐意研究的结果为，在前述中间层压体20a的第二化学转换处理层25b上粘结最内层24后，通过加热层压体20，可获得规定的粘结强度。
作为前述加热的具体方法有热辊接触式、热风式、近红外线或远红外线等方法，但在本发明中可以采用任何加热方法，如前面所述，粘结树脂也可被加热到其软化点温度以上。
并且，作为其它的方法，如前面所述，在形成最内层24时，中间层压体20a被加热到铝阻挡层22的最内层24侧的表面温度到达酸改性聚烯烃树脂的软化点的条件，其次，通过利用夹层层压法或双组份挤压法形成最内层24，也可以获得粘结强度稳定的层压体20。
作为本发明的聚合物电池用包装材料的层压体20，除基体材料层24、阻挡层22、最内层24外，也可以在阻挡层22和最内层24之间设置中间层。中间层用于提高聚合物电池用包装材料的强度和使阻挡性能稳定化。
在本发明的层压体20中的前述各层中，为了提高适用性、制模型、层压化加工、最终制品的二次加工(代状化、压纹成形)的适应性和稳定化的目的，可以采用电晕处理、喷砂处理、氧化处理、臭氧处理等表面活性化处理。
在本发明的聚合物电池包装用封接头中采用的层压体20的最内层24不具有对金属的热封接性的情况下，在对聚合物电池1中的接头4进行热封接时，如图9(a)、图9(b)、图9(c)所示，在接头4和外包装体5的层压体20的最内层24之间加装对金属等接头4和最内层20两者具有热封接性的粘结薄膜6，确保接头4的密封性。粘结薄膜6如图9(d)、图9(e)、图9(f)所示，可以卷到接头4的规定位置上。
作为粘结性薄膜，可由前述不饱和的碳接枝聚烯烃、金属交联聚乙烯、乙烯或丙烯和丙烯酸、或者甲基丙烯酸的共聚物构成。
在本发明的聚合物电池用包装材料中的基体材料21和阻挡层22侧的第一化学转换处理层25a优选通过干式层压法粘贴在一起。
如前面所述，基体材料层21和由磷酸铬酸盐处理面构成的第一化学转换处理层25a作为在干式层压中使用的第一粘结层26a，可采用聚酯类、聚乙烯亚胺类、聚醚类、氰基丙烯酸酯类、氨基甲酸乙酯类、有机钛类、聚醚氨基甲酸乙酯类、环氧类、聚酯氨基甲酸乙酯类、亚胺类、异氰酸酯类、聚烯烃类、硅类的各种粘结剂。
实施例
对于本发明的聚合物电池包装用热封接装置和使用该装置的方法，将通过实施例作更详细的说明。
(聚合物电池本体2)
聚合物电池本体2的原电池3的尺寸为：30×45mm、原电池3的厚度为：3.0mm。
聚合物电池本体2的接头4：宽度为6.0mm、厚度为100μm、长度为30mm。
(外包装体5)
在实施例和比较例的任何一个中，对外包装体5的层压体进行化学转换处理，作为处理液，采用由酚醛树脂、氟化铬(3)化合物、磷酸构成的水溶液，利用滚筒涂布法涂敷处理液，在覆膜温度在180℃以上的条件下进行烘烤。铬的涂敷量为10mg/m2。
袋式外包装体5为宽度为50mm、长度为60mm的轴枕式，压纹式外包装体5在单侧上具有压纹部7，压纹部7的形状为30×50mm，深度为3.5mm。
(热封接装置)
用在实施例中的封接头10a、10b的封接面12的形状可采用(A)式和(B)式。在(A)式封接面12的情况下，凹部11的深度m为40μm、凹部11的宽度n为7.5mm、封接宽度w为5mm。在(B)式封接面12的情况下，凹部11的深度m为80μm、凹部11的宽度n为6.5mm、封接宽度w为5mm。
在比较例中采用的封接头的封接面是平的。
接头4的热封接条件为：190℃、5秒。
并且，各例中，在接头4的封接部作为粘结薄膜在接头4的两面上配置厚度20μm的酸改性聚烯烃薄膜6。在最内层24采用聚丙烯类树脂(融点Tmpp)的情况下，作为粘结树脂23、27采用酸改性聚丙烯(融点Tmpp±20℃)，在最内层24采用聚乙烯类树脂(融点Tmpe)的情况下，作为粘结树脂23、27采用酸改性聚乙稀(融点Tmpe±30℃)。
[实施例](袋式)
在铝(20μm)22的单侧上进行化学转换处理，在铝22的未进行化学转换处理的面上通过干式层压法粘贴上拉伸聚酯薄膜(12μm)21，其次，在进行化学转换处理形成化学转换处理层的铝22的另一面上，层压软化点为115℃、融点为123℃、厚度为30μm的线状低密度聚乙烯24，并形成层压体20，采用其制袋并获得检测体实施例1。
[实施例2](袋式)
在铝(20μm)22的单侧上进行化学转换处理，在铝22的未进行化学转换处理的面上利用干式层压法粘贴上拉伸聚酯薄膜(12μm)21，其次，在进行化学转换处理并形成化学转换处理层的铝22的另一面上，对软化点为120℃、融点为154℃、厚度为30μm的聚丙烯24进行干层压并形成层压体20，用其制袋并获得检测体实施例2。
[实施例3](袋式)
在铝(20μm)22的两面上进行化学转换处理，在铝22的进行了化学转换处理的一个面上利用干式层压法粘贴拉伸聚酯薄膜(12μm)21，其次，在进行化学转换处理并形成化学转换处理层的铝22的另一个面上，将以软化点为90℃、融点为115℃的酸改性聚乙烯树脂作为粘结树脂23挤压到20μm的厚度并夹层层压LLDPE薄膜(30μm)24，所获得的层压体被加热到铝22的表面温度到达110℃以上的状态，进而，用其制袋并获得检测体实施例3。
[实施例4](袋式)
在铝(20μm)22的两个面上进行化学转换处理，在铝22的化学转换处理过的一个面上利用干式层压法粘贴拉伸聚酯薄膜(12μm)21，其次，在进行化学转换处理并形成化学转换处理层的铝22的另一个面上，将以软化点为120℃、融点为147℃的酸改性聚丙烯树脂作为粘结树脂23挤压到20μm的厚度并夹层层压聚丙烯薄膜(30μm)24，所获得的层压体20被加热到铝22的表面温度到达110℃以上的状态，进而，用其制袋并获得检测体实施例4。
[实施例5](袋式)
在铝(20μm)22的两个面上进行化学转换处理，在铝22的化学转换处理过的一个面上利用干式层压法粘贴拉伸的聚酯薄膜(16μm)21，其次，在进行化学转换处理并形成化学转换处理层的铝22的另一个面上，双组分挤压软化点为123℃、融点为145℃、厚度为30μm的酸改性聚丙烯(20μm)23和软化点为120℃、融点为140℃、厚度为(30μm)的聚丙烯树脂24，并形成层压体20，所获得的层压体20被加热到达铝22的表面温度为150℃以上的状态，进而，用其制袋并获得检测体实施例5。
[实施例6](袋式)
在铝(20μm)22的两个面上进行化学转换处理，在铝22的化学转换处理过的一个面上利用干式层压法粘贴拉伸聚酯薄膜(16μm)21，其次，在进行化学转换处理并形成化学转换处理层的铝22的另一个面上，双组分挤压软化点为90℃、融点为115℃、厚度为30μm的酸性聚乙烯(30μm)23和软化点为115℃、融点为123℃、厚度为30μm的线状低密度聚乙烯24，并形成层压体20，所获得的层压体20被加热到铝22的表面温度到达120℃以上的状态，进行，用其制袋并获得检测体实施例6。
[实施例7](袋式)
在铝(40μm)22的两个面上进行化学转换处理，在铝22的化学转换处理过的一个面上利用干式层压法粘贴延伸尼龙(25μm)21，其次，在进行化学转换处理并形成化学转换处理层的铝22的另一个面上干式层压软化点为120℃、融点为147℃、厚度为30μm的聚丙烯薄膜24，并形成层压体20，用其进行压纹成形并获得检测体实施例7。
[实施例8](压纹式)
在铝(40μm)22的两个面上进行化学转换处理，在铝22的化学转换处理过的一个面上利用干式层压法粘贴延伸尼龙(25μm)21，其次，在进行化学转换处理并形成化学转换处理层的铝22的另一个面上干式层压软化点为115℃、融点为123℃、厚度为30μm的线状低密度聚乙烯薄膜24并形成层压体20，用其进行压纹成形并获得检测体
实施例8。
[实施例9](压纹式)
在铝(40μm)22的两个面上进行化学转换处理，在铝22的化学转换处理过的一个面上利用干式层压法粘贴延伸尼龙(25μm)21，其次，在进行化学转换处理并形成化学转换处理层的铝22的另一个面上，形成3g/m2的软化点为110℃、融点为137℃的酸改性聚丙烯树脂27，将软化点为127℃、融点为142℃、厚度为30μm的聚丙烯作为最内层24进行热层压并形成层压体20，用其制袋并获得检测体实施例9。
[实施例10](压纹式)
在铝(40μm)22的两个面上进行化学转换处理，在铝22的化学转换处理过的一个面上对延伸聚酯(6μm)21和延伸尼龙(15μm)21进行干式层压形成层压薄膜，利用干式层压法粘贴前述延伸尼龙面和铝22的化学转换处理层，其次，在进行化学转换处理的铝22的另一个面上，形成3g/m2的软化点为110℃、融点为137℃的酸改性聚丙烯树脂27，将软化点为127℃、融点为142℃、厚度为30μm的聚丙烯作为最内层24进行热层压并形成层压体20，用其制袋并获得检测体实施例10。
[实施例11](压纹式)
在铝(40μm)22的两个面上进行化学转换处理，在铝22的化学转换处理过的一个面上利用干式层压法粘贴延伸尼龙(25μm)21，其次，在进行化学转换处理并形成化学转换处理层的铝22的另一个面上，将软化点为90℃、融点为115℃的酸改性聚乙烯树脂作为粘结树脂23挤压到20μm，对LLDPE薄膜(30μm)24进行夹层层压，所得的层压体20被加热到铝的表面温度到达110℃以上的状态，进而，用其进行制袋并获得检测体实施例11。
[实施例12](压纹式)
在铝(40μm)22的两个面上进行化学转换处理，在铝22的化学转换处理过的一个面上利用干式层压法粘贴延伸尼龙(25μm)21，其次，在进行化学转换处理并形成化学转换处理层的铝22的另一个面上，将软化点为120℃、融点为147℃的酸改性聚丙烯树脂作为粘结树脂23挤压到20μm，对聚丙烯薄膜(30μm)24进行夹层层压，所得的层压体20被加热到铝的表面温度到达110℃以上的状态，进而，用其进行制袋并获得检测体实施例12。
[实施例13](压纹式)
在铝(50μm)22的两个面上进行化学转换处理，在铝22的化学转换处理过的一个面上利用干式层压法粘贴尼龙(25μm)21，其次，在进行化学转换处理并形成化学转换处理层的铝22的另一个面上，对软化点为120℃、融点为130℃、厚度为30μm的酸改性聚乙烯23、和形成最内层的高密度聚乙烯树脂(软化点125℃、融点132℃、厚度30μm)进行双组分挤压并形成层压体20，所得的层压体20被加热到铝的表面温度到达140℃以上的状态，进而，用其进行制袋并获得检测体实施例13。
[实施例14](压纹式)
在铝(50μm)22的两个面上进行化学转换处理，在铝22的化学转换处理过的一个面上利用干式层压法粘贴尼龙(25μm)21，其次，在进行化学转换处理并形成化学转换处理层的铝22的另一个面上，对软化点为123℃、融点为145℃、厚度为30μm的酸改性聚乙烯23、和形成最内层的高密度聚丙烯树脂(软化点为120℃、融点为140℃、厚度为30μm)进行双组分挤压并形成层压体20，所得的层压体20被加热到铝的表面温度到达140℃以上的状态，用其进行压纹成形并获得检测体实施例14。
[比较例1]～[比较例14]采用与各自对应的[实施例1]～[实施例14]相同的层压体20构成的袋式或压纹式外包装体，采用平的封接面封接头并进行热密封。
[比较例15]
在铝20μm的两个面上进行化学转换处理，在化学转换处理的一个面上利用干式层压法粘贴延伸聚酯薄膜(16μm)，其次，在化学转换处理过的铝的另一个面上，以软化点为90℃、融点为115℃的酸改性聚乙烯树脂作为粘结树脂挤压到20μm的厚度，并对LLDPE薄膜30μm进行夹层层压，用所得的层压体制袋以获得检测体实施例15。
[比较例16]
在40μm铝的两个面上进行化学转换处理，在化学转换处理的一个面上利用干式层压法粘贴延伸尼龙25μm，其次，在化学转换处理过的铝的另一个面上，对软化点为120℃、融点为147℃、厚度为30μm的酸改性聚丙烯薄膜进行干式层压，用所得的层压体制袋以获得检测体实施例16。
<评价方法>
向各样品的外包装体5的内部注入封接检测液，使接头4向下，观察封接检测液向接头部两端的浸透程度。
1)密封性
使各检测体的接头4向下，外包装体5的内部装入封接检测液，静置24小时后，观察封接液是否浸透到接头4的封接部的端部。
2)耐内容物性
作为保存条件，各检测体的外包装体内部注入电解液，在60℃、90％RH的恒温槽中保存7天后，在去除掉前述电解液后，使各检测体的接头4向下，在外包装体5的内部装入封接检测液，静置24小时后，观察封接液是否浸透到接头部封接部的端部。
3)层离
并且，确认在铝22和最内层24或粘结性树脂层23、27之间有无层离。
<结果>
实施例1～实施例14，无论是在(A)类封接头的情况下还是在(B)类封接头的情况下，各100个检测体中，所有接头4的密封性完整，没有封接检测液浸透，不存在耐内容物性能上的问题，并且未观察到层离。然而，比较例1～比较例14，对于成形时的密封性，在任何结构的外包装体中，有过半数的检测体中的封接检测液浸透到封接宽度的中央部，形成易发生封接脱落的封接状态。并且，对于耐内容物性能，在比较例1、比较例3、比较例11中，在各100个检测体中2～3个检测体中观察到封接脱落。其他检测体，在这样的封接状态的情况下，在封接脱落的同时有可能发生由聚合物电池的电解液和水分发生反应而产生的氟化氢腐蚀接头材料从而引起层离。
比较例15和比较例16，对于耐内容物性能，所有的100个检测体中均观察到铝和最内层的粘结面上发生层离。
在采用本发明对聚合物电池的接头部分进行热封接的情况下，接头部附近的密封稳定，聚合物电池的外包装体的密封性能提高。并且，形成层压体后，利用其后的加热提高该层压体的粘结强度，可防止由于聚合物电池的电解质和浸入的水分反应生成氟化氢而产生层离。
第二实施形态
下面，参照附图说明本发明的第二实施形态。
图11至图16是表示本发明的实施形态的图示。
首先，通过图14和图15说明聚合物电池及其包装材料。
如图14所示，聚合物电池101配有：具有压纹部107的包装材料(外包装体)105，容纳在包装材料105的压纹部107内的电极材料(聚合物电池本体)102，填充到压纹部107内的电解质104，从电极材料(聚合物电池本体)102延伸出来的一对接头103从包装材料105凸出到外面。图14所示的包装材料105与图3所示的外包装体5相当。
对包装材料105的压纹部107进行预成形，压纹部107内容纳电极材料102和电解质104，该包装材料105沿折曲线106折曲，通过使折曲的包装材料105彼此粘结，获得聚合物电池101。
并且，包装材料105由铝层105a、夹持铝层105a的基体材料层105b和热封接层105c构成。其中基体材料层105b由尼龙或PET构成，并且热封接层105c由PP或PE构成。
另外，包装材料105的热封接层105c在沿折曲线106折曲包装材料105的情况下位于内侧，并使包装材料105彼此粘结。
下面，通过图11说明用于制作包装材料105的压纹成形装置110。首先，对用于制作包装材料105的工件W进行说明。工件W具有与上述包装材料105的层结构相同的层结构，具有构成包装材料105的多个制品部120、120(图12)。
压纹成形装置110配有阳模115、在其与阳模115之间对工件进行压纹成形的阴模111。
其中阳模115由对应于工件W中的制品部120、120的外周设置的阳模用波纹116，和设置自阳模用波纹内侧上的阳模用压紧部117构成，阳模用压紧部117具有压紧工件W的压紧面117a。并且，阳模用压紧部117上可自由进退地设置有成形凸起部118。
另一方面，阴模111由具有对应于阳模用波纹116设置的、在其与阳模用波纹116之间夹持工件的阴模用波纹112，和在阴模用波纹112内侧对应于阳模用压紧部117设置的阴模用压紧部113构成，阴模用压紧部113具有在其与阳模用压紧部117的压紧面117a之间压紧工件W的压紧面113a。
进而，阴模111具有进入阳模115的成形凸起部118的成形凹部114。
其次，对采用压纹成形装置110的压纹成形方法进行说明。
首先，准备由基体材料层105b和热封接层105c夹住铝层105a而构成的工件W。
工件W具有构成包装材料105的多个制品部120、120，各制品部120、120之间形成由后面所述的阳模用波纹116和阴模用波纹112所形成的波纹印痕。
这样的工件W的各制品部120中，在对应于阳模用压紧部117和阴模用压紧部113之间的部分上形成一对切口122。该一对切口122，是在阳模115和阴模111的外侧(上游侧)由切刀125和剪切台126形成的。因此，对应于阳模用压紧部117和阴模用压紧部113之间的部分，是指各制品部120中除压纹部107以外的所有部分。
另外，切刀125和剪切台126也可以不设置在阳模115和阴模111的外侧，而将切刀125设在阳模压紧部117中，而将剪切台126设置在阴模压紧部113中。
工件W在压纹成形时利用成形凸起部118被引入到成形凹部114一侧，一对切槽122沿着与该工件W的引入方向正交的方向形成。一对切槽122超过成形凹部114呈细长状延伸(图12)，该切槽122也可以形成更细的圆弧状(图13)。
并且，如图12和图13所示，一对切槽122可平行于工件W的波纹印痕121设置，也可以如图16(a)所示与波纹121正交地设置切槽122，进而也可以如图16(b)所示设置平行于波纹121的切槽122和正交的切槽122。
工件W接着被输送到阳模115和阴模111之间，接着，对准工件使阳模115和阴模111靠近，工件W被夹持在阳模115的阳模用波纹116和阴模111的阴模用波纹112之间，并且，利用阳模用压紧部117和阴模用压紧部113的压紧面117a、113a逐渐压紧。阳模用波纹116和阴模用波纹112在各自的表面上具有凹凸结构，牢固地夹持在工件W的制品部120、120之间，由对应于工件W的一个制品部120的压纹成形装置110进行的压纹成形加工不会对别的制品部120产生影响。因此，对工件W的一个制品部120进行压纹成形并成形出压纹部107，然后对工件W的另一个制品部120也进行压纹成形，已经成形过的制品部120的压纹部107不会产生变形。
利用这样的阳模用波纹116和阴模用波纹112夹持工件W，从而在工件W的制品部120、120之间形成波纹印痕121。
然后，阳模115的成形凸起部118进入到阴模111的成形凹部114内，借此将工件W引入成形凹部114内并进行压纹成形，在工件W的制品部120上成形压纹部107。在这种情况下，利用阳模用压紧部117和阴模用压紧部113的各压紧面117a、113a逐渐压紧工件W的制品部120。并且，由于在工件W上形成一对切槽122，所以在比切槽122靠内侧的工件W被顺滑地引入成形凹部114内。即，工件W被夹持在阳模用波纹116和阴模用波纹112之间，但由于比切槽122更靠内侧的工件W因阳模用波纹116和阴模用波纹112而变得比较自由，所以可以移动。
因此，对工件W的制品部120的压纹成形可更为容易且精度更高，对于工件W可高精度地形成压纹部107。
这样，在工件W的各制品部120上形成压纹部107后，工件W在各制品部120中的一对切槽122内侧被切断，制作包装材料105。
采用如上所述的本实施形态，可对工件W的制品部120进行精度良好的压纹成形，可精度良好地形成压纹部107。
采用上述本发明，由于在对应于工件中的阳模用压紧部和阴模用压紧部之间的部分上预先形成切槽，所以切槽内侧的工件可被顺滑地引入成形凹部，因此可精度良好地在工件上成形出压纹部。
第三实施形态
下面，参照附图说明本发明的第三个实施形态。
图17是表示本发明的第三个实施形态的图示。
压纹成形装置110配有阳模115、在其与阳模115之间对工件进行压纹成形的阴模111。
其中阳模115由对应于工件W中如图12、图13和图16所示的制品部120、120的外周部设置的阳模用波纹116，和设置在阳模用波纹116内侧的阳模用压紧部117构成，阳模用压紧部117具有压紧工件W的压紧面117a。并且，阳模用压紧部117上可自由进退地设置有成形凸起部118。
另一方面，阴模111由对应于阳模用波纹116设置的、在其与阳模用波纹116之间夹持工件W的阴模用波纹112，和在阴模用波纹112内侧对应于阳模用压紧部117设置的阴模用压紧部113构成，阴模用压紧部113具有在其与阳模用压紧部117的压紧面117a之间压紧工件W的压紧面113a。
进而，阴模111具有阳模115的成形凸起部118进入其中的成形凹部114。
并且，在压纹成形装置110的下游侧，设置压紧利用压纹成形装置110成形出压纹部107的工件W中的压纹部107之外的部分的工件压紧装置130。
该工件压紧装置130包括：具有容纳工件W的压纹部107的容纳部134、配置在工件W上方的第一金属模具131，和配置在工件W的下方、在其与第一金属模具131之间压紧工件W的第二金属模具135。
在其中的第一金属模具131内内置有加热器133，对第一金属模具131的整体进行加热。另外，代替利用加热器133对第一金属模具131加热，也可以利用超声波加热或高频加热进行加热。
下面对这种结构的本实施形态的作用进行说明。
首先，准备用基体材料层105b和热封接层105c夹持铝层105a而构成的工件W。
工件W具有构成包装材料(外包装体)105的多个制品部120、120，在各制品部120、120之间利用如后面所述的压纹成形装置的阳模用波纹116和阴模用波纹112形成波纹轨迹121。
这样的工件W的各制品部120中，在对应于阳模用压紧部117和阴模用压紧部113之间的部分上形成一对切槽122。该一对切槽122利用在压纹成形装置110的外侧的图中未示出的切刀形成。因此，对应于阳模用压紧部117和阴模用压紧部113之间的部分是指各制品部120中压纹部107以外的所有部分。
工件W在压纹成形时被成形凸起部118引入成形凹部114一侧，但一对切槽122沿与工件W的引入方向正交的方向形成。一对切槽122超过成形凹部114呈细长状延伸(图12)，但也可以形成比该切槽122更细的圆弧状(图13)。
接着，工件W被输送到压纹成形装置110的阳模115和阴模111之间，接着相对于工件W靠近阳模阳模115和阴模111，工件W被夹持在阳模115的阳模用波纹116和阴模111的阴模用波纹112之间，并且，利用阳模用压紧部117和阴模用压紧部113的压紧面117a、113a逐渐压紧。阳模用波纹116和阴模用波纹112在各自的表面上具有凹凸结构，牢固地夹持在工件W的制品部120、120之间，由对应于工件W的一个制品部120的压纹成形装置110进行的压纹成形加工不会影响别的制品部120。因此，对工件W的一个制品部120进行压纹成形以成形出压纹部107，此后对工件W的另一个制品部120也进行压纹成形，已经成形过的制品部120的压纹部107不会变形。
通过利用这样的阳模用波纹116和阴模用波纹112夹持工件W，在工件W的制品部120、120之间形成波纹印痕121。
然后，阳模115的成形凸起部118进入阴模111的成形凹部114内，借此将工件W引入到成形凹部114内进行压纹成形，在工件W的制品部120上成形压纹部107。在这种情况下，利用阳模用压紧部117和阴模用压紧部113的各压紧面17a、113a逐渐压紧工件W的制品部120。并且，由于在工件W中成形出一对切槽122，所以比切槽122更靠内侧的工件W被顺滑地引入到成形凹部114内。即，工件W被夹持在阳模用波纹116和阴模用波纹112之间，但比切槽122更靠内侧的工件W由于阳模用波纹116和阴模用波纹112而比较自由，所以可以移动。
因此，对工件W的制品部120的压纹成形可更为容易且精度良好，可对工件W形成精度良好的压纹成形部107。
然后，将工件W输送给工件压紧装置130。当将工件W输送给工件压紧装置130时，相对于工件W使第一金属模具131和第二金属模具135相互靠近，在第一金属模具131和第二金属模具135之间压紧夹持工件。这时，由于工件W的压纹部107容纳在第一金属模具131的容纳部134内，所以工件W中的压纹部107之外的部分被压紧在第一金属模具131和第二金属模具135之间。
在压纹成形装置110中形成压纹部107时，在工件W中的压纹部107以外的部分中产生卷曲。采用本发明，通过使第一金属模具131被加热器133整体加热，可使工件W被适当地加热且工件W被压紧在第一金属模具131和第二金属模具135之间。从而可确保去除在工件W上产生的卷曲。
这样，在工件W的各制品部120中形成压纹部107，工件W的卷曲被去除后，工件W在各制品部120中的一对切槽122内侧被切断，制成包装材料105。
采用上述本实施形态，可对工件W的制品部120进行精度良好的压纹成形，高精度地形成压纹部107，同时，可确保去除工件上产生的卷曲。
另外，在上述实施形态中，举例表示了工件W被输送给压纹成形装置110之前，在压纹成形装置110的外侧于工件W上形成一对切槽122的情况，但是，并不限于此，也可以在压纹成形装置110内形成一对切槽122。
采用如上所述的本发明，工件中压纹部以外的部分被压紧在第一金属模具和第二金属模具之间，同时，通过加热金属模具，可确保去除在工件上产生的卷曲。

Claims (21)

1、一种热封接装置，对容纳具有接头的聚合物电池本体的外包装体的端部进行热封接，其特征为，
配有分别具有封接面的一对封接头，
在至少一个封接头的封接面中与位于外包装体端部的接头相应部分上形成凹部。
2、如权利要求1所述的热封接装置，其特征为，凹部形成于两个封接头的封接面上。
3、如权利要求2所述的热封接装置，其特征为，凹部的深度在接头厚度的1/3～一个接头厚度的范围内。
4、如权利要求2所述的热封接装置，其特征为，凹部的宽度在接头宽度+0.2mm～接头宽度+2.0mm的范围内。
5、如权利要求1所述的热封接装置，其特征为，外包装体由至少具有基体材料层、粘结层、第一化学转换处理层、阻挡层、第二化学转换处理层、最内层的层压体构成。
6、如权利要求5所述的热封接装置，其特征为，采用最内层由聚烯烃薄膜构成，对该最内层与第二化学转换处理层一起进行干式层压的外包装体。
7、如权利要求5所述的热封接装置，其特征为，采用在第二化学转换处理层和最内层之间设置酸改性聚烯烃层，同时，最内层由聚丙烯构成，由酸改性聚烯烃层和聚丙烯构成的最内层在酸改性聚烯烃的软化点以上的温度下进行热层压所得的外包装体。
8、如权利要求5所述的热封接装置，其特征为，采用在第二化学转换处理层和最内层之间设置挤压树脂层，同时，挤压树脂层为酸改性聚烯烃树脂，最内层由聚烯烃薄膜构成，在第二化学转换处理层上夹层层压挤压树脂和最内层，在酸改性聚烯烃的软化点以上的温度下加热所得的外包装体。
9、如权利要求5所述的热封接装置，其特征为，采用在第二化学转换处理层和最内层之间设置挤压树脂层，同时，挤压树脂层为酸改性聚烯烃树脂，最内层由聚烯烃构成，在第二化学转换处理层上同时挤出挤压树脂和最内层，此后加热到酸改性聚烯烃的软化点以上的温度所获得的外包装体。
10、一种热封接方法，其特征为，包括：
以使接头位于未封接部分上的方式，把具有接头的聚合物电池本体从前述未封接部分容纳到一边未封接的袋式外包装体中的步骤，
和用一对封接头热封接外包装体的未封接部分的步骤，所述一对封接头为，在具有封接面的一对封接头中，至少一个封接头的封接面中与接头相应的区域上形成有凹部。
11、一种热封接方法，其特征为，包括：
在压纹式外包装体中容纳具有接头的聚合物电池本体的步骤，
和用一对封接头热封接外包装体的边缘部分的步骤，所述一对封接头为，在分别具有封接面的一对封接头中，至少一个封接头的封接面中与接头相应的区域上形成有凹部。
12、一种压纹成形方法，采用压纹成形装置对工件进行压纹成形，所述压纹成形装置配有阳模和阴模，所述阳模具有对应于具有多个制品部的工件中的制品部外周设置的阳模用波纹、设置在阳模用波纹内侧上的成形凸起部、设置在成形凸起部和阳模用波纹之间的阳模用压紧部，所述阴模具有对应于阳模用波纹的阴模用波纹、对应于成形凸起部的成形凹部、对应于阳模用压紧部的阴模用压紧部，其特征为，包括：
预先在工件上对应于阳模用压紧部和阴模用压紧部之间的部分形成切口的步骤，
在阳模和阴模之间对工件进行压纹成形而形成压纹部的步骤。
13、如权利要求12所述的压纹成形方法，其特征为，在工件上形成切口时，形成与压纹成形时的工件的引入方向正交的切口。
14、如权利要求12所述的压纹成形方法，其特征为，工件的切槽是由阳模和阴模的内部形成的。
15、如权利要求12所述的压纹成形方法，其特征为，工件的切槽是由阳模和阴模的外侧形成的。
16、如权利要求12所述的压纹成形方法，其特征为，工件由至少具有基体材料层、铝层、粘结层的层压体构成。
17、一种工件，是由具备阳模和阴模的压纹成形装置成形的，所述阳模具有对应于具有多个制品部的工件中的制品部外周设置的阳模用波纹、设置在阳模用波纹内侧上的成形凸起部、设置在成形凸起部和阳模用波纹之间的阳模用压紧部，所述阴模具有对应于阳模用波纹的阴模用波纹、对应于成形凸起部的成形凹部、对应于阳模用压紧部的阴模用压紧部，其特征为，
在工件上对应于阳模用压紧部和阴模用压紧部之间的部分形成切口。
18、如权利要求17所述的工件，其特征为，工件由至少具有基体材料层、铝层、粘结层的层压体构成。
19、一种工件压紧装置，对通过压纹成形成形出压纹部的工件中压纹部以外的部分进行压紧，其特征为，
具备：具有容纳工件的压纹部的容纳部、配置在工件一侧的第一金属模具，
配置在工件另一侧上、在其与第一金属模具之间压紧工件的第二金属模具，
对第一金属模具或第二金属模具中的至少任何一个进行加热。
20、如权利要求19所述的工件压紧装置，其特征为，对第一金属模具和第二金属模具双方进行加热。
21、如权利要求19所述的工件压紧装置，其特征为，工件由至少具有基体材料层、铝层、粘结层的层压体构成。
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