JP5561315B2 - Film exterior electrical device - Google Patents

Film exterior electrical device Download PDF

Info

Publication number
JP5561315B2
JP5561315B2 JP2012136790A JP2012136790A JP5561315B2 JP 5561315 B2 JP5561315 B2 JP 5561315B2 JP 2012136790 A JP2012136790 A JP 2012136790A JP 2012136790 A JP2012136790 A JP 2012136790A JP 5561315 B2 JP5561315 B2 JP 5561315B2
Authority
JP
Japan
Prior art keywords
heat
film
region
lead
resin
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.)
Active
Application number
JP2012136790A
Other languages
Japanese (ja)
Other versions
JP2012199248A (en
Inventor
弘志 屋ケ田
政智 水田
清和 及川
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.)
NEC Corp
Original Assignee
NEC Corp
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
Application filed by NEC Corp filed Critical NEC Corp
Priority to JP2012136790A priority Critical patent/JP5561315B2/en
Publication of JP2012199248A publication Critical patent/JP2012199248A/en
Application granted granted Critical
Publication of JP5561315B2 publication Critical patent/JP5561315B2/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Classifications

    • 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
    • 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
    • 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
    • B29C66/131—Single flanged joints, i.e. one of the parts to be joined being rigid and flanged in the joint area
    • B29C66/1312—Single flange to flange joints, the parts to be joined being rigid
    • 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
    • B29C66/50—General aspects of joining tubular articles; General aspects of joining long products, i.e. bars or profiled elements; General aspects of joining single elements to tubular articles, hollow articles or bars; General aspects of joining several hollow-preforms to form hollow or tubular articles
    • B29C66/51—Joining tubular articles, profiled elements or bars; Joining single elements to tubular articles, hollow articles or bars; Joining several hollow-preforms to form hollow or tubular articles
    • B29C66/54—Joining several hollow-preforms, e.g. half-shells, to form hollow articles, e.g. for making balls, containers; Joining several hollow-preforms, e.g. half-cylinders, to form tubular articles
    • 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
    • B29C66/70—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material
    • B29C66/71—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the composition of the plastics material of the parts to be joined
    • 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
    • B29C66/70—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material
    • B29C66/72—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the structure of the material of the parts to be joined
    • B29C66/723—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the structure of the material of the parts to be joined being multi-layered
    • B29C66/7232—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the structure of the material of the parts to be joined being multi-layered comprising a non-plastics layer
    • B29C66/72321—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the structure of the material of the parts to be joined being multi-layered comprising a non-plastics layer consisting of metals or their alloys
    • 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
    • B29C66/70—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material
    • B29C66/73—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset
    • B29C66/739—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of the parts to be joined being a thermoplastic or a thermoset
    • B29C66/7392—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of at least one of the parts being a thermoplastic
    • B29C66/73921—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of at least one of the parts being a thermoplastic characterised by the materials of both parts being thermoplastics
    • 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
    • B29C66/83221—Joining or pressing tools reciprocating along one axis cooperating reciprocating tools, each tool 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
    • B29C66/70—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material
    • B29C66/73—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset
    • B29C66/735—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the extensive physical properties of the parts to be joined
    • B29C66/7352—Thickness, e.g. very thin
    • 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
    • B29C66/81411—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 characterised by its cross-section, e.g. transversal or longitudinal, being non-flat
    • B29C66/81425—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 characterised by its cross-section, e.g. transversal or longitudinal, being non-flat being stepped, e.g. comprising a shoulder
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2031/00—Other particular articles
    • B29L2031/712—Containers; Packaging elements or accessories, Packages
    • B29L2031/7146—Battery-cases
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/10—Energy storage using batteries

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Sealing Battery Cases Or Jackets (AREA)
  • Connection Of Batteries Or Terminals (AREA)

Description

本発明は、電池やキャパシタに代表される、電気デバイス要素を外装フィルムに収容したフィルム外装電気デバイスに関する。 The present invention is typified by a battery or a capacitor, to a full Irumu covered electrical device accommodated in an exterior film electrical device element.

近年、携帯機器等の電源としての電池は、軽量化、薄型化が強く要求されている。そこで、電池の外装材に関しても、軽量化、薄型化に限界のある従来の金属缶に代わり、さらなる軽量化、薄型化が可能であり、金属缶に比べて自由な形状を採ることが可能な外装材として、金属薄膜フィルム、または金属薄膜と熱融着性樹脂フィルムとを積層したラミネートフィルムを用いたものが使用されるようになった。   In recent years, batteries as power sources for portable devices and the like are strongly required to be light and thin. Therefore, the battery exterior material can be further reduced in weight and thickness in place of conventional metal cans that are limited in weight and thickness, and can have a free shape compared to metal cans. As the exterior material, a metal thin film or a laminate film obtained by laminating a metal thin film and a heat-fusible resin film has been used.

電池の外装材として用いられるラミネートフィルムの代表的な例としては、金属薄膜であるアルミニウム薄膜の片面にヒートシール層である熱融着性樹脂フィルムを積層するとともに、他方の面に保護フィルムを積層した３層ラミネートフィルムが挙げられる。   A typical example of a laminate film used as a battery exterior material is to laminate a heat-sealable resin film as a heat seal layer on one side of an aluminum thin film as a metal thin film and a protective film on the other side. Three-layer laminated film.

外装材にラミネートフィルムを用いたフィルム外装電池においては、正極と負極とをセパレータを介して積層した電池要素を、熱融着性樹脂フィルムを互いに対向させてラミネートフィルムで包囲し、電池要素の周囲でラミネートフィルムを熱融着することによって電池要素を気密封止（以下、単に封止という）している。電池要素の正極および負極から電流を外部に取り出すために、正極および負極にはそれぞれ集電タブが突出して設けられており、これら集電タブをリード端子に接続し、そのリード端子をラミネートフィルムから突出させて接続している。また、セパレータとしては、ポリオレフィン等の熱可塑性樹脂を用いて形成した多孔性フィルムなどが用いられる。   In a film-clad battery using a laminate film as an exterior material, a battery element in which a positive electrode and a negative electrode are laminated via a separator is surrounded by a laminate film with a heat-fusible resin film facing each other, The battery element is hermetically sealed (hereinafter simply referred to as sealing) by heat-sealing the laminate film. In order to extract the current from the positive electrode and the negative electrode of the battery element to the outside, current collecting tabs are provided to protrude from the positive electrode and the negative electrode, respectively. These current collecting tabs are connected to lead terminals, and the lead terminals are removed from the laminate film. Protrusively connected. Moreover, as a separator, the porous film etc. which were formed using thermoplastic resins, such as polyolefin, are used.

図５にラミネートフィルムを外装体として用いた従来の電池のリード端子部分を示す。また、図６に、従来のヒータによりリード端子部分を熱融着する状態を示す。   FIG. 5 shows a lead terminal portion of a conventional battery using a laminate film as an outer package. FIG. 6 shows a state where the lead terminal portion is heat-sealed by a conventional heater.

フィルム外装電池１００は、２枚の外装体フィルム１０１に電池要素１０３が収納され、電池要素１０３に接続されたリード端子１０４が外部に引き出された構成となっている。   The film-clad battery 100 has a configuration in which a battery element 103 is accommodated in two outer package films 101 and lead terminals 104 connected to the battery element 103 are drawn to the outside.

外装体フィルム１０１は、金属層１０１ｂおよび内面樹脂層１０１ａとを含むラミネートフィルムであり、内面樹脂層１０１ａの周囲同士を熱融着することによって接合されている（図６では保護フィルムは省略している）。この封止辺のうち、対向する２辺が、リード端子１０４の引き出し封止辺となっており、これらの辺からリード端子１０４が引き出されている。また、平板状金属からなるリード端子１０４の表面には、耐熱性樹脂層１０５ａと金属接着性樹脂層１０５ｂとからなるシーラント１０５が設けられている。耐熱性樹脂層１０５ａは金属層１０１ｂとリード端子１０４との短絡防止を目的とし、金属接着性樹脂層１０５ｂはリード端子１０４とシーラント１０５との接着性を向上させることを目的としたものである。   The exterior body film 101 is a laminate film including a metal layer 101b and an inner surface resin layer 101a, and is bonded by thermally fusing the periphery of the inner surface resin layer 101a (the protective film is omitted in FIG. 6). ) Of these sealing sides, two opposing sides serve as lead sealing sides of the lead terminals 104, and the lead terminals 104 are drawn out from these sides. A sealant 105 made of a heat-resistant resin layer 105a and a metal adhesive resin layer 105b is provided on the surface of the lead terminal 104 made of a flat metal. The heat-resistant resin layer 105 a is intended to prevent a short circuit between the metal layer 101 b and the lead terminal 104, and the metal adhesive resin layer 105 b is intended to improve the adhesion between the lead terminal 104 and the sealant 105.

外装体フィルム１０１による電池要素１０３の封止の概要は以下のとおりである。   The outline of sealing of the battery element 103 by the exterior body film 101 is as follows.

外装体フィルム１０１同士の熱融着には、図６に示すように、リード端子封止部の形状に対応する凹部２０１を有するヒータ２００ａ、２００ｂが用いられる。   As shown in FIG. 6, heaters 200 a and 200 b each having a recess 201 corresponding to the shape of the lead terminal sealing portion are used for heat-sealing the exterior body films 101.

まず、シーラント１０５を、金属接着性樹脂層１０５ｂをリード端子１０４の側にして、リード端子１０４の封止予定部の両面に熱融着しておく。リード端子１０４を引き出した状態で、上下の外装体フィルム１０１の端辺で、リード端子１０４を挟み、外装体フィルム１０１同士を熱融着する。リード端子封止部においてはシーラント１０５と外装体フィルム１０１とを熱融着させる。   First, the sealant 105 is heat-sealed to both surfaces of the portion to be sealed of the lead terminal 104 with the metal adhesive resin layer 105 b facing the lead terminal 104. With the lead terminals 104 pulled out, the lead terminals 104 are sandwiched between the edges of the upper and lower exterior body films 101, and the exterior body films 101 are heat-sealed. In the lead terminal sealing portion, the sealant 105 and the exterior body film 101 are heat-sealed.

特開２００４−１１１３０３号公報JP 2004-111303 A

しかしながら、図６に示す従来形状のヒータ２００ａ、２００ｂにより、従来形状のシーラント１０５を備えたリード端子封止部を熱融着した場合、以下の問題を生じる場合があった。   However, when the lead terminal sealing portion including the conventional shape sealant 105 is heat-sealed by the conventional shape heaters 200a and 200b shown in FIG. 6, the following problems may occur.

図７に示すように、従来のヒータ２００ａ、２００ｂの場合、リード加熱部２５１と周辺加熱部２５２との間には大きな段差があった。また、従来のシーラント１０５はシーラント１０５どうしを接合させている端部１０５ｃが接合に要する必要最小限の幅しか設けられていなかった。このため、従来のヒータ２００ａ、２００ｂと従来のシーラント１０５との組み合わせでは、リード加熱部２５１と周辺加熱部２５２との境界部分の隅部Ｃ3に大きな空間が形成されていた。この隅部Ｃ3には、リード加熱部２５１により押し潰された樹脂と、周辺加熱部２５２により押し潰された樹脂が供給されるものの、隅部Ｃ3を所望の熱融着幅で埋めるほどの樹脂は供給されない。このため、図５のＡ部を拡大図である図８に示すように、シーラント１０５の端部１０５ｃにおける外装体フィルム１０１の融着領域１０２ａに、所望の熱融着幅よりも狭いくびれ１５０を生じてしまう場合があった。 As shown in FIG. 7, in the case of the conventional heaters 200 a and 200 b, there is a large step between the lead heating unit 251 and the peripheral heating unit 252. Further, in the conventional sealant 105, the end portion 105c where the sealants 105 are joined is provided with a minimum width necessary for joining. For this reason, in the combination of the conventional heaters 200 a and 200 b and the conventional sealant 105, a large space is formed at the corner C 3 at the boundary between the lead heating unit 251 and the peripheral heating unit 252. The corner C 3, and the resin was crushed by the read heating unit 251, although crushed resin by the peripheral heating portion 252 is supplied, as the fill corners C 3 at a desired heat Chakuhaba This resin is not supplied. Therefore, as shown in FIG. 8, which is an enlarged view of the portion A in FIG. 5, a constriction 150 narrower than the desired heat fusion width is formed in the fusion region 102 a of the exterior body film 101 at the end portion 105 c of the sealant 105. It might happen.

シーラント１０５の端部１０５ｃ近傍以外の融着領域１０２ａは平坦であるため、ヒータ２００ａ、２００ｂにより均一な圧力を印加することができ、ヒータの幅とほぼ同じ幅の領域の対向する内面樹脂層どうしが溶融して一体化するので、ヒータの幅を所望の幅ａとすれば、溶融・一体化（以下熱融着）する樹脂の領域の幅も所望の幅ａで熱融着することができる。これに対して、端部１０５ｃ近傍は樹脂の供給が不十分となる隅部Ｃ3に対応する部分である。このため、熱融着の幅が幅ａよりも狭い幅ｂとなってしまいくびれ１５０が形成されてしまうこととなる。 Since the fusion region 102a other than the vicinity of the end portion 105c of the sealant 105 is flat, a uniform pressure can be applied by the heaters 200a and 200b. As a result, the width of the resin region to be melted and integrated (hereinafter referred to as heat fusion) can be heat-sealed with the desired width a. . In contrast, the vicinity of the end portion 105c is a portion corresponding to the corner portion C 3 to supply the resin becomes insufficient. For this reason, the constriction 150 is formed in which the width of the thermal fusion becomes a width b narrower than the width a.

熱融着の幅が狭いくびれにおいては、外部から電池内部に浸入する水分の透過量が部分的に多くなる領域となってしまう。なぜなら、樹脂の両側の水分子濃度に差があるときは、樹脂中の単位時間に透過する水分子の量は、フィックの法則により透過方向の樹脂経路の長さに反比例するからである。このことによりくびれの形成は、電池内部への水分浸入の加速要因となり、水分が電池内で悪影響を及ぼしている電池特性劣化の加速につながる。このことはフィルム外装電池、特にフィルム外装非電解質電池特有の課題であり、単に熱融着領域の分断によるリークパスの形成さえ回避すればよいという問題ではなく、全てのシール部分において所定の幅の融着領域が要求されている。   In a constriction where the width of heat fusion is narrow, it becomes a region where the amount of moisture permeated into the battery from the outside is partially increased. This is because when there is a difference in the concentration of water molecules on both sides of the resin, the amount of water molecules that permeate in the resin per unit time is inversely proportional to the length of the resin path in the permeation direction according to Fick's law. As a result, the formation of the constriction becomes an acceleration factor of moisture intrusion into the inside of the battery, leading to acceleration of deterioration of battery characteristics in which moisture has an adverse effect in the battery. This is a problem peculiar to a film-clad battery, particularly a film-clad non-electrolyte battery, and it is not just a problem that it is necessary to avoid the formation of a leak path by dividing the heat-sealed region. A landing area is required.

また、量産製造においては、シール樹脂の当初の厚さのワークごとのばらつきや、ヒータとワークの相互位置のばらつき等が多かれ少なかれどうしても生じるため、シールの樹脂埋まり性もワークごとにばらつきを生じる。そのため、従来、設計レベルではひとつのワークの全ての融着領域で所定幅を満たすように設定したつもりでも、量産時に全ての製造品についてくびれの形成を完全に防止することは難しかった。   Further, in mass production, since the variation of the initial thickness of the seal resin for each workpiece and the variation of the mutual positions of the heater and the workpiece are more or less inevitably caused, the resin embedding property of the seal also varies for each workpiece. Therefore, conventionally, at the design level, it has been difficult to completely prevent the formation of constriction in all manufactured products even if it is intended to satisfy a predetermined width in all fusion regions of one workpiece.

そこで、本発明は、電極端子近傍の熱融着を確実に行うことができるフィルム外装電気デバイスを提供することを目的とする。 The present invention has an object to provide a full Irumu covered electrical device that can be performed thermal fusion of neighboring electrode terminals securely.

本発明のフィルム外装電気デバイスの製造方法は、延出部を有する被覆部材によって電極端子を被覆しておき、この延出部を中間過熱部を有するヒータによりヒートプレスすることで延出部に対応する部分の熱融着性樹脂層を押し出すようにして熱融着する。これにより、延出部における熱融着された領域の幅を電気デバイス要素の周辺部における熱融着された領域の幅よりも広く形成することができる。すなわち、本発明は、従来、幅が狭くなり、くびれとなっていた被覆部材の側端面近傍を幅広に熱融着することができ、もしくは製造ばらつきによる最悪の場合でもくびれ発生を防止することができるので、外部から水分の浸入を防止することができる。   The manufacturing method of the film-covered electrical device of the present invention covers the electrode terminal by covering the electrode terminal with a covering member having an extending portion, and corresponds to the extending portion by heat-pressing the extending portion with a heater having an intermediate superheated portion. Heat fusion is performed by extruding the portion of the heat-fusible resin layer to be extruded. Thereby, the width | variety of the heat-sealed area | region in an extension part can be formed wider than the width | variety of the heat-sealed area | region in the peripheral part of an electric device element. That is, according to the present invention, it is possible to heat-bond the vicinity of the side end face of the covering member, which has been narrowed and narrowed conventionally, widely, or to prevent the occurrence of constriction even in the worst case due to manufacturing variations. Therefore, it is possible to prevent moisture from entering from the outside.

上記目的を達成するため、本発明のフィルム外装電気デバイスは、セパレータと前記セパレータに交互に積層する電極とを含む電気デバイス要素と、電気デバイス要素に接続された電極端子を被覆する被覆部材と、電気デバイス要素の周辺部および被覆部材を熱融着して電気デバイス要素を封止する、熱融着性樹脂層を備えた外装体フィルムと、電極端子と被覆部材と外装体フィルムとが接合された領域を含む第１の接合領域と、外装体フィルムどうしが接合された第２の接合領域と、被覆部材どうしが接合された延出部と外装体フィルムとが接合された領域を含む第３の接合領域と、を有し、第３の接合領域は第１の接合領域と前記第２の接合領域との間に形成され、第３の接合領域の厚みは、第１の接合領域の厚みよりも薄く、第２の接合領域の厚みよりも厚く、第３の接合領域における熱融着性樹脂層は、第２の接合領域における熱融着性樹脂層よりも厚みの薄い領域を含み、第３の接合領域の延出部における熱融着部の幅は、第２の接合領域の外装体フィルムどうしの熱融着部の幅以上である。 In order to achieve the above object, a film-clad electrical device of the present invention includes an electrical device element including a separator and electrodes alternately stacked on the separator, and a covering member that covers an electrode terminal connected to the electrical device element, sealing the electrical device element by heat-sealing the peripheral portion and the covering member of the electrical device element, exterior body film and, electrostatic terminal and the cover member and the outer body film and is bonded with a thermally adhesive resin layer including a region of including first junction region, a second junction region exterior body film each other are joined, the extending portion covering member with each other are joined together and the outer package film is bonded regions possess a free third junction region, the third joining region of is formed between the second junction region between the first junction region, the thickness of the third bonding region, the first junction Less than the thickness of the region, the second contact Greater than the thickness of the region, heat-fusible resin layer of the third bonding region comprises a thin region thickness than the heat-welding resin layer in the second junction region, extending in the third joint region width of heat-sealing portion in the parts are, Ru der than the width of the heat-sealed portion of the outer package film each other of the second junction region.

本発明によれば、被覆部材の側端面近傍にくびれを生じることなく熱融着することができるので、外部から水分の浸入を防止することができ、電池を長寿命化することができる。   According to the present invention, heat sealing can be performed without causing constriction in the vicinity of the side end face of the covering member, so that moisture can be prevented from entering from the outside and the battery can have a long life.

本発明のフィルム外装電池の一例の分解斜視図である。It is a disassembled perspective view of an example of the film-clad battery of this invention. 本発明のヒータと、ラミネートフィルムと、本発明のシーラントを備えたリード端子の配置を示す模式図である。It is a schematic diagram which shows arrangement | positioning of the lead terminal provided with the heater of this invention, a laminate film, and the sealant of this invention. 本発明のヒータでヒートプレスした状態の、リード端子近傍を模式的に示す一部拡大図である。FIG. 3 is a partially enlarged view schematically showing the vicinity of a lead terminal in a state of being heat-pressed with the heater of the present invention. 本発明の電池におけるリード端子の側端部の一部拡大透視図である。It is a partially expanded perspective view of the side end portion of the lead terminal in the battery of the present invention. ラミネートフィルムを外装体として用いた従来の電池のリード端子部分の一例を示す図である。It is a figure which shows an example of the lead terminal part of the conventional battery which used the laminate film as an exterior body. 従来のヒータと、ラミネートフィルムと、従来のシーラントを備えたリード端子の配置を示す模式図である。It is a schematic diagram which shows arrangement | positioning of the lead terminal provided with the conventional heater, the laminate film, and the conventional sealant. 従来のヒータでヒートプレスした状態の、リード端子近傍を模式的に示す一部拡大図である。It is a partial enlarged view which shows typically the lead terminal vicinity of the state heat-pressed with the conventional heater. 従来の電池におけるリード端子の側端部の一部拡大透視図である。It is a partially expanded perspective view of a side end portion of a lead terminal in a conventional battery.

次に、本発明の実施形態の例について図面を参照して説明する。   Next, an example of an embodiment of the present invention will be described with reference to the drawings.

図１にフィルム外装電池の分解斜視図を示す。なお、図１は、本実施形態の集電部保護部材を外した状態のフィルム外装電池を示すものである。   FIG. 1 shows an exploded perspective view of the film-clad battery. In addition, FIG. 1 shows the film-clad battery with the current collector protecting member of the present embodiment removed.

フィルム外装電池１は、電池要素２と、電池要素２に設けられた正極側および負極側の集電部３と、電池要素２を電解液とともに収納する、２枚のラミネートフィルム５、６からなる外装体と、集電部３に接続されたリード端子４とを有する。   The film-clad battery 1 includes a battery element 2, a positive and negative current collector 3 provided on the battery element 2, and two laminate films 5 and 6 that store the battery element 2 together with an electrolytic solution. It has an exterior body and lead terminals 4 connected to the current collector 3.

電池要素２は、複数の正極板と複数の負極板とを、セパレータを介して交互に積層して構成されている。   The battery element 2 is configured by alternately laminating a plurality of positive plates and a plurality of negative plates via separators.

各正極板はアルミニウム箔に正極電極が塗布されており、負極は銅箔に負極電極が塗布されており、積層領域から延出している、電極材料が塗布されていない集電タブは、正極板の集電タブ同士、および負極板の集電タブ同士がそれぞれ一括して超音波溶接されて、中継部である集電部３が形成される。これと同時に集電部３へのリード端子４の接続も超音波溶接によりなされる。   Each positive plate has a positive electrode applied to an aluminum foil, a negative electrode has a negative electrode applied to a copper foil, and a current collecting tab not coated with an electrode material extending from a laminated region is a positive plate The current collecting tabs and the current collecting tabs of the negative electrode plate are collectively ultrasonically welded to form the current collecting portion 3 as a relay portion. At the same time, the lead terminal 4 is connected to the current collector 3 by ultrasonic welding.

外装体は、電池要素２をその厚み方向両側から挟んで包囲する２枚のラミネートフィルム５、６からなる。各ラミネートフィルム５、６は、熱融着性を有する熱融着性樹脂層、金属層、および保護層を積層してなるものであり、ＰＰ（ポリプロピレン）からなる熱融着性樹脂層が電池の内側の層となるようにしてラミネートフィルム５、６の熱融着部７を熱融着することで、電池要素２が封止される。   The exterior body is composed of two laminated films 5 and 6 that surround and surround the battery element 2 from both sides in the thickness direction. Each of the laminate films 5 and 6 is formed by laminating a heat-fusible resin layer having heat-fusibility, a metal layer, and a protective layer, and the heat-fusible resin layer made of PP (polypropylene) is a battery. The battery element 2 is sealed by heat-sealing the heat-sealing part 7 of the laminate films 5 and 6 so as to be the inner layer of the film.

ラミネートフィルム５、６としては、電解液が漏洩しないように電池要素２を封止できるものであれば、この種のフィルム外装電池に用いられるフィルムを用いることができ、一般的には、金属薄膜層と熱融着性樹脂層とを積層したラミネートフィルムが用いられる。この種のラミネートフィルムとしては、例えば、厚さ１０μｍ〜１００μｍの金属箔に厚さ３μｍ〜２００μｍの熱融着性樹脂を貼りつけたものが使用できる。金属箔、すなわち、金属層の材質としては、Ａｌ、Ｔｉ、Ｔｉ系合金、Ｆｅ、ステンレス、Ｍｇ系合金などが使用できる。熱融着性樹脂、すなわち、熱融着性樹脂層としては、ポリプロピレン、ポリエチレン、これらの酸変成物、ポリフェニレンサルファイド、ポリエチレンテレフタレートなどのポリエステル等、ポリアミド、エチレン−酢酸ビニル共重合体などが使用できる。また、保護層としては、ナイロン等が好適である。   As the laminate films 5 and 6, as long as the battery element 2 can be sealed so that the electrolytic solution does not leak, a film used for this type of film-clad battery can be used. A laminate film in which a layer and a heat-fusible resin layer are laminated is used. As this type of laminate film, for example, a film obtained by attaching a heat-fusible resin having a thickness of 3 μm to 200 μm to a metal foil having a thickness of 10 μm to 100 μm can be used. As the material of the metal foil, that is, the metal layer, Al, Ti, Ti-based alloy, Fe, stainless steel, Mg-based alloy and the like can be used. As the heat-fusible resin, that is, the heat-fusible resin layer, polypropylene, polyethylene, acid-modified products thereof, polyester such as polyphenylene sulfide, polyethylene terephthalate, polyamide, ethylene-vinyl acetate copolymer, etc. can be used. . Moreover, nylon etc. are suitable as a protective layer.

リード端子４は、耐熱性樹脂層１１ａと金属接着性樹脂層１１ｂとからなるシーラント１１によって被覆されている。耐熱性樹脂層１１ａはラミネートフィルム５、６の金属薄膜層とリード端子４との短絡防止を目的としたものであり、金属接着性樹脂層１１ｂまたはラミネートフィルムの熱融着製樹脂層よりも融点の高い樹脂からなるもの、あるいは電子線照射などで架橋された樹脂からなるものであり、材料としては熱融着製樹脂層に用いられる材料と同様の材料が使用できる。金属接着性樹脂層１１ｂはリード端子１０４とシーラント１１との接着性を向上させることを目的としたものであり、ポリエチレンやポリプロピレンなどのポリオレフィンの酸変性物、エチレン−酢酸ビニル共重合体、アイオノマー、ポリエステル、アクリル樹脂、１液または２液型接着剤、エポキシ系接着剤、ＡＢＳ樹脂などが使用できる。シーラント１１は、リード端子４の側端部４ｃからはみ出すように延出させている延出部１１ｃを有する。延出部１１ｃではシーラントどうしが互いに接合している。   The lead terminal 4 is covered with a sealant 11 composed of a heat resistant resin layer 11a and a metal adhesive resin layer 11b. The heat-resistant resin layer 11a is intended to prevent a short circuit between the metal thin film layers of the laminate films 5 and 6 and the lead terminals 4, and has a melting point higher than that of the metal adhesive resin layer 11b or the heat-bonded resin layer of the laminate film. It is made of a resin having a high viscosity, or made of a resin cross-linked by electron beam irradiation or the like, and as the material, the same material as that used for the heat-sealed resin layer can be used. The metal adhesive resin layer 11b is intended to improve the adhesion between the lead terminal 104 and the sealant 11, and is an acid-modified product of polyolefin such as polyethylene or polypropylene, ethylene-vinyl acetate copolymer, ionomer, Polyester, acrylic resin, one-pack or two-pack adhesive, epoxy adhesive, ABS resin, and the like can be used. The sealant 11 has an extending portion 11 c that extends so as to protrude from the side end portion 4 c of the lead terminal 4. In the extending part 11c, the sealants are joined to each other.

シーラント１１はリード端子４に予め被覆しておき、その後、ラミネートフィルム５、６の熱融着を行う。なお、リード端子４が延出する部分のラミネートフィルム５、６の熱融着は、ラミネートフィルム５、６がリード端子４に対して直接熱融着されるのではなく、シーラント１１が設けられた部分に対して熱融着がなされる。延出部１１ｃは、当該熱融着がなされることで延出部１１ｃの押出し面１１ｄ上のラミネートフィルム５、６の熱融着性樹脂層を延出部１１ｃより外側に押出すように機能する。   The sealant 11 is coated on the lead terminals 4 in advance, and then the laminate films 5 and 6 are heat-sealed. In addition, the heat sealing of the laminate films 5 and 6 where the lead terminals 4 extend was not directly heat-sealed to the lead terminals 4 but the sealant 11 was provided. The part is heat-sealed. The extension part 11c functions to extrude the heat-fusible resin layer of the laminate films 5 and 6 on the extrusion surface 11d of the extension part 11c to the outside of the extension part 11c by performing the heat fusion. To do.

次に、図２に、熱融着を行う際の、ヒータと、ラミネートフィルムと、リード端子の配置関係を模式的に示す。なお、図２は、リード端子４の部分を図１に示す矢印Ｂ方向からみたものである。また、図３にヒータでヒートプレスした状態の、フィルム外装電池１のリード端子４近傍を模式的に示す一部拡大図を示す。さらに、図４に、リード端子の側端部の一部拡大透視図を示す。   Next, FIG. 2 schematically shows the arrangement relationship of the heater, the laminate film, and the lead terminals when performing heat fusion. 2 shows the lead terminal 4 as viewed from the direction of arrow B shown in FIG. FIG. 3 is a partially enlarged view schematically showing the vicinity of the lead terminal 4 of the film-clad battery 1 in a state of being heat-pressed with a heater. FIG. 4 is a partially enlarged perspective view of the side end portion of the lead terminal.

ヒータ５０ａ、５０ｂの間にラミネートフィルム５、６が挟みこまれ、さらにこれらラミネートフィルム５、６の間にシーラント１１で被覆したリード端子４が配置されており、ヒータ５０ａ、５０ｂが図２に示す矢印Ｃ方向に移動して、ラミネートフィルム５、６をヒートプレスすることでラミネートフィルム５、６の熱融着、ラミネートフィルム５、６とシーラント１１との熱融着がなされる。   The laminate films 5 and 6 are sandwiched between the heaters 50a and 50b, and the lead terminals 4 covered with the sealant 11 are disposed between the laminate films 5 and 6, and the heaters 50a and 50b are shown in FIG. The laminate films 5 and 6 are heat-pressed by moving in the direction of arrow C, and the laminate films 5 and 6 are heat-sealed, and the laminate films 5 and 6 and the sealant 11 are heat-sealed.

ヒータ５０ａ、５０ｂの加圧面側には、電池要素２の周縁部分を熱融着する周辺加熱部５２、周辺加熱部５２に対して凹形状となるリード加熱部５１、およびリード加熱部５１と周辺加熱部５２とを階段状に繋ぐ中間加熱部５３が形成されている。ヒータ５０ａ、５０ｂは互いに各加熱部５１、５３、５２が対向するように配置されている。従来のヒータの構成は、中間加熱部５３に相当する部分がなかったかもしくは好適な形状となっていなかったため、リード加熱部５１に相当する部分と周辺加熱部５２に相当する部分との段差が急に変化する態様であった。これに対して本実施形態では、中間加熱部５３として新規な平坦部を設け、リード加熱部５１と周辺加熱部５２との間の段差を段階的に変化させている。   On the pressure surface side of the heaters 50a and 50b, the peripheral heating part 52 for heat-sealing the peripheral part of the battery element 2, the lead heating part 51 having a concave shape with respect to the peripheral heating part 52, and the lead heating part 51 and the periphery An intermediate heating unit 53 that connects the heating unit 52 in a staircase shape is formed. The heaters 50a and 50b are arranged so that the heating parts 51, 53 and 52 face each other. In the conventional heater configuration, there is no portion corresponding to the intermediate heating portion 53 or the shape is not suitable, so that the step between the portion corresponding to the lead heating portion 51 and the portion corresponding to the peripheral heating portion 52 is steep. It was the aspect which changes to. On the other hand, in this embodiment, a new flat part is provided as the intermediate heating part 53, and the step between the lead heating part 51 and the peripheral heating part 52 is changed stepwise.

周辺加熱部５２は、ラミネートフィルム５、６の、電池要素２の周縁部分をヒートプレスし、周辺部５２ｈを形成する。周辺部５２ｈはラミネートフィルム５、６どうしが接合された領域であり、その断面厚さはｔ3である。周辺部５２ｈは幅ａで熱融着される（図４参照）。 The peripheral heating part 52 heat-presses the peripheral part of the battery element 2 of the laminate films 5 and 6 to form the peripheral part 52h. Peripheral portion 52h is an area in which is what laminate film 5, 6 are joined, the cross-sectional thickness of t 3. The peripheral portion 52h is heat-sealed with a width a (see FIG. 4).

リード加熱部５１は、シーラント１１で被覆したリード端子４と延出部１１ｃの一部をヒートプレスし、リード部５１ｈを形成する。このリード部５１ｈは、リード端子４とシーラント１１とラミネートフィルム５、６とが積層された領域を含み、その断面厚さはｔ1である。より詳細には、図３に示すように、リード加熱部５１は、リード端子４の側端部４ｃから距離Ｌ1だけ幅広に形成されている。つまり、リード加熱部５１は、リード端子４の幅に対して２Ｌ1だけ幅広に形成されていることになる。中間加熱部５３のリード側端面５３ａまでの距離Ｌ1を設けることで、ヒートプレス時に中間加熱部５３がリード端子４に過剰な圧力をかけることなく、延出部１１ｃに所定の圧力をかけることができる。なお、距離Ｌ1は０．５〜１.５ｍｍの範囲内とするのが好ましい。０．５ｍｍ以下ではヒータとワークの相互位置のブレによってリード端子４の端部に圧力がかかりリード端子４を破損してしまう場合があり、１.５ｍｍ以上では隅部Ｃ1を埋めるに必要な樹脂が多くなりすぎ、くびれ発生の懸念が増大し、本発明の目的の実現が困難になる。 The lead heating part 51 heat-presses the lead terminal 4 covered with the sealant 11 and a part of the extension part 11c to form a lead part 51h. The lead portion 51h includes a region where the lead terminal 4 and the sealant 11 and the laminate film 5, 6 are stacked, the cross-sectional thickness of t 1. More specifically, as shown in FIG. 3, the lead heating part 51 is formed wide by a distance L 1 from the side end part 4 c of the lead terminal 4. That is, the lead heating part 51 is formed to be wide by 2L 1 with respect to the width of the lead terminal 4. By providing the distance L 1 to the lead-side end surface 53a of the intermediate heating part 53, the intermediate heating part 53 applies a predetermined pressure to the extension part 11c without applying excessive pressure to the lead terminal 4 during heat press. Can do. The distance L 1 is preferably in the range of 0.5 to 1.5 mm. If it is 0.5 mm or less, pressure may be applied to the end portion of the lead terminal 4 due to blurring between the heater and the workpiece, and the lead terminal 4 may be damaged. If it is 1.5 mm or more, it is necessary to fill the corner C 1. The resin becomes too much, and the concern about the occurrence of constriction increases, making it difficult to achieve the object of the present invention.

中間加熱部５３は、延出部１１ｃの部分をヒートプレスして中間平坦部５３ｈを形成する。中間平坦部５３ｈは、シーラント１１どうしが接合された延出部１１ｃとラミネートフィルム５、６とが積層された領域（図３に示すＬ3の領域）を含み、その断面厚さはｔ2である。この中間平坦部５３ｈは図３に示すＬ2＋Ｌ3の長さであり、リード部５１ｈと周辺部５３ｈとを繋ぐようにして形成されている。ここで、Ｌ3はリード加熱部５１と中間加熱部５３との境界となるリード側端面５３ａから延出部１１ｃの端面までの距離である。また、Ｌ2は延出部１１ｃの端面から中間加熱部５３と周辺加熱部５２との境界となる周辺側端面５３ｂまでの距離である。また、中間加熱部５３は、ラミネートフィルム５、６の潰し量がリード加熱部５１と周辺加熱部５２の潰し量に比べて大きくなるようにしている。換言すれば、中間加熱部５３は、中間加熱部５３におけるラミネートフィルム５、６の厚さＡ3がリード加熱部５１および周辺加熱部５２におけるラミネートフィルム５、６の厚さＡ1、Ａ2に比較して薄くなるように形成されている。 The intermediate heating part 53 heat-presses the part of the extension part 11c to form the intermediate flat part 53h. Intermediate flat portion 53h includes a region in which the extending portion 11c sealant 11 What happened was bonded and laminated films 5 and 6 are stacked (region of L 3 shown in FIG. 3), in its cross-sectional thickness is t 2 is there. The intermediate flat portion 53h has a length of L 2 + L 3 shown in FIG. 3, and is formed so as to connect the lead portion 51h and the peripheral portion 53h. Here, L 3 is the distance from the lead-side end surface 53a, which is the boundary between the lead heating unit 51 and the intermediate heating unit 53, to the end surface of the extending portion 11c. L 2 is the distance from the end face of the extending part 11 c to the peripheral side end face 53 b that becomes the boundary between the intermediate heating part 53 and the peripheral heating part 52. Further, the intermediate heating unit 53 is configured such that the amount of crushing of the laminate films 5 and 6 is larger than the amount of crushing of the lead heating unit 51 and the peripheral heating unit 52. In other words, in the intermediate heating unit 53, the thickness A 3 of the laminate films 5 and 6 in the intermediate heating unit 53 is changed to the thicknesses A 1 and A 2 of the laminate films 5 and 6 in the lead heating unit 51 and the peripheral heating unit 52. It is formed so as to be thinner in comparison.

リード加熱部５１、中間加熱部５３および周辺加熱部５２のヒートプレスにより形成される熱融着部７は、リード部５１ｈ、中間平坦部５３ｈおよび周辺部５２ｈを含み、各部分の厚さの関係はｔ1＞ｔ2＞ｔ3の関係となっている。 The heat fusion part 7 formed by the heat press of the lead heating part 51, the intermediate heating part 53 and the peripheral heating part 52 includes a lead part 51h, an intermediate flat part 53h and a peripheral part 52h, and the relationship between the thicknesses of the respective parts. Has a relationship of t 1 > t 2 > t 3 .

なお、延出部１１ｃの長さは、１．５ｍｍ以上とするのが好ましい。本発明者らの検討によると、延出部１１ｃによって、熱融着樹脂層を押し延ばして本発明の効果を確実に得るためには、押し延ばす領域の幅（図３の横方向の長さ）、すわなち、Ｌ3は１ｍｍ以上必要である。このことと、前述のように、リードの側端部４ｃから中間加熱部５３のリード側端面５３ａまでの距離Ｌ1を製造ばらつきと考え、０．５ｍｍ以上確保することが好ましいことを考え併せると、延出部１１ｃの長さは１．５ｍｍ以上が好ましい。 In addition, it is preferable that the length of the extension part 11c shall be 1.5 mm or more. According to the study by the present inventors, in order to reliably obtain the effect of the present invention by extending the heat-sealing resin layer by the extending portion 11c, the width of the region to be extended (the length in the lateral direction in FIG. 3). ) That is, L 3 needs to be 1 mm or more. This is combined with the fact that the distance L 1 from the lead side end portion 4c to the lead side end surface 53a of the intermediate heating portion 53 is considered to be a manufacturing variation, and it is preferable to secure 0.5 mm or more as described above. The length of the extending part 11c is preferably 1.5 mm or more.

一方、延出部１１ｃの長さは、熱融着領域の幅よりも短いことが好ましい。延出部１１ｃと中間平坦部５３ｈが重なる領域（Ｌ3）は、その両側の領域に向かって内面樹脂層の樹脂が押し延ばされていることになるが、その樹脂の量は各寸法によって下記のように変化する。すわなち、熱融着領域の幅ａよりもＬ3が小さいときには、Ｌ3の中央を境に左側の樹脂が左に移動し右側の樹脂が右に移動する（図３における左右方向）ので、Ｌ3が長くなるほど、Ｌ3の左右に押し延ばされる樹脂が増加するが、その増加はＬ3＝ａとなったところで止まる。Ｌ3＞ａのときにはＬ3が長くなっても左右に押し延ばされる樹脂の量はそれ以上には増加しなくなる。その理由はヒートプレスされる領域がプレス軸方向からみて長方形の場合、その領域外にはみ出す樹脂は短辺側よりも長辺側に多く出るのでＬ3＞ａの場合ではプレス面積が増えても増加分の樹脂は左右方向ではなく、前後方向（図３における紙面と垂直な方向）に押し出されることとなるためである。このことからＬ3＞ａの場合には樹脂の透過面積を増やしても水分透過を増やすデメリットのみとなるので、延出部１１ｃの長さは熱融着領域の幅よりも短いことが好ましい。 On the other hand, it is preferable that the length of the extension part 11c is shorter than the width of the heat fusion region. In the region (L 3 ) where the extending portion 11c and the intermediate flat portion 53h overlap, the resin of the inner surface resin layer is extended toward the regions on both sides, and the amount of the resin depends on each dimension. It changes as follows. In other words, when L 3 is smaller than the width a of the heat fusion region, the left resin moves to the left and the right resin moves to the right (left and right direction in FIG. 3) from the center of L 3 . , as L 3 becomes longer, the resin to be extended pushing the left and right L 3 is increased, the increase stops upon reaching the L 3 = a that. When L 3 > a, the amount of resin pushed to the left and right does not increase even if L 3 becomes longer. The reason for this is that when the area to be heat-pressed is rectangular when viewed from the direction of the press axis, the amount of resin that protrudes out of the area is greater on the long side than on the short side, so if L 3 > a, the press area increases. This is because the increased amount of resin is extruded in the front-rear direction (the direction perpendicular to the paper surface in FIG. 3), not in the left-right direction. Therefore, in the case of L 3 > a, even if the permeation area of the resin is increased, only the demerit of increasing the water permeation is obtained. Therefore, it is preferable that the length of the extension portion 11c is shorter than the width of the heat-sealed region.

図７に示したように、従来のヒータ２００ａ、２００ｂの場合、本実施形態の中間加熱部５３がないため、リード加熱部２５１と周辺加熱部２５２との間は大きな段差があった。また、従来のシーラント１０５は本実施形態の延出部１１ｃに相当する部分が実質的になかった。このため、従来のヒータ２００ａ、２００ｂと従来のシーラント１０５との組み合わせでは、リード加熱部２５１と周辺加熱部２５２との境界部分の隅部Ｃ3に大きな空間が形成されることとなる。この隅部Ｃ3には、リード加熱部２５１により押し潰された樹脂と、周辺加熱部２５２により押し潰された樹脂が供給されるものの、隅部Ｃ3を埋めるほどの樹脂を十分に供給することができないため、くびれを生じてしまっていた。 As shown in FIG. 7, in the case of the conventional heaters 200a and 200b, there is no intermediate heating part 53 of this embodiment, so there is a large step between the lead heating part 251 and the peripheral heating part 252. Further, the conventional sealant 105 has substantially no portion corresponding to the extending portion 11c of the present embodiment. For this reason, in the combination of the conventional heaters 200 a and 200 b and the conventional sealant 105, a large space is formed at the corner C 3 at the boundary portion between the lead heating unit 251 and the peripheral heating unit 252. The corner C 3, and the resin was crushed by the read heating unit 251, although crushed resin by the peripheral heating portion 252 is supplied to supply sufficiently the extent of resin fills the corners C 3 Because I couldn't do it, I was constricted.

一方、本実施形態ではヒータ５０ａ、５０ｂに中間加熱部５３を設けるとともにシーラント１１に延出部１１ｃを設けている。本実施形態では、これらを組合わせることで、リード加熱部５１と中間加熱部５３との境界部分に隅部Ｃ1が形成され、中間加熱部５３と周辺加熱部５２との境界部分には隅部Ｃ2が形成されることとなる。本実施形態では、２つの隅部Ｃ1、Ｃ2が形成されることとなるが、隅部Ｃ1、Ｃ2の各空間容積は、従来の隅部Ｃ3の空間容積に比べると小さくなる。また、中間加熱部５３は延出部１１ｃの部分のラミネートフィルム５、６を厚さＡ3となるまで押し潰す。隅部Ｃ1には、リード加熱部５１で押し潰された樹脂と、中間加熱部５３で多く押し潰された樹脂とが流れ込む。また、隅部Ｃ2には、周辺加熱部５２で押し潰された樹脂と、中間加熱部５３で多く押し潰された樹脂とが流れ込む。つまり、本実施形態では、隅部Ｃ1、Ｃ2の空間容積を小さするとともに、これら小さな空間に十分な量の樹脂を供給することができる構成とし、シーラント１１の端部近傍にくびれが生じないようにしている。図４に示すように、中間加熱部５３によってヒートプレスされた延出部１１ｃの部分の熱融着部７の幅ｃは、樹脂が押出されるため、周辺加熱部５２による熱融着部７の幅ａよりも広く形成されている。 On the other hand, in this embodiment, the heaters 50 a and 50 b are provided with the intermediate heating part 53 and the sealant 11 is provided with the extending part 11 c. In the present embodiment, a combination of these forms a corner C 1 at the boundary between the lead heating unit 51 and the intermediate heating unit 53, and a corner at the boundary between the intermediate heating unit 53 and the peripheral heating unit 52. Part C 2 will be formed. In the present embodiment, two corners C 1 and C 2 are formed, but the spatial volumes of the corners C 1 and C 2 are smaller than the spatial volume of the conventional corner C 3. . The intermediate heating unit 53 crushes until a thickness of A 3 and laminate film 5, 6 parts of the extending portion 11c. Resin that has been crushed by the lead heating unit 51 and resin that has been largely crushed by the intermediate heating unit 53 flow into the corner C 1 . In addition, the resin crushed by the peripheral heating unit 52 and the resin crushed by the intermediate heating unit 53 flow into the corner C 2 . In other words, in the present embodiment, the space volume of the corners C 1 and C 2 is reduced, and a sufficient amount of resin can be supplied to these small spaces, so that the constriction occurs near the end of the sealant 11. I am trying not to. As shown in FIG. 4, the width c of the heat fusion part 7 in the portion of the extension part 11 c heat-pressed by the intermediate heating part 53 is such that the resin is extruded, so the heat fusion part 7 by the peripheral heating part 52. It is formed wider than the width a.

なお、ヒータ５０ａ、５０ｂの材質としてはゴム製よりも金属ブロックからなるものが好ましい。その理由は、樹脂を押し延ばしたい部位に選択的かつ効果的に圧力を加えたほうが、意図した通りの樹脂の流れが実現でき、隅部Ｃ1、Ｃ2の埋まり性の制御に都合がよいからである。換言すれば、仕上がりの断面形状が予測しやすいため、隅部Ｃ1、Ｃ2を埋めるのに必要な樹脂の量の計算がしやすく、かつシミュレーションと実際の整合性もよいため、設計通りの樹脂が押し延ばされて所望の部位を埋めることができる。それに比べて、表面がゴム製のヒータでは圧力分布によって表面形状が変化してしまうので仕上がりの断面形状の予想が困難になり、上記樹脂の流れのシミュレーションが困難になったり精度が悪くなってしまう。 Note that the heaters 50a and 50b are preferably made of a metal block rather than rubber. The reason is that if the pressure is selectively and effectively applied to the portion where the resin is desired to be stretched, the flow of the resin can be realized as intended, which is convenient for controlling the filling properties of the corners C 1 and C 2. Because. In other words, since the finished cross-sectional shape is easy to predict, it is easy to calculate the amount of resin necessary to fill the corners C 1 and C 2 , and the simulation and actual consistency are good. The resin can be stretched to fill the desired site. On the other hand, with a rubber heater, the surface shape changes depending on the pressure distribution, making it difficult to predict the finished cross-sectional shape, making it difficult to simulate the resin flow and reducing accuracy. .

以上、本実施形態によれば、従来くびれていた熱融着領域に十分な樹脂を供給して熱融着がなされる幅を広くすることができるので、外部からの水分の浸入を防止することができ、電池を長寿命化することができる。   As described above, according to this embodiment, it is possible to widen the width of heat fusion by supplying sufficient resin to the heat fusion region that has been constricted in the past, thereby preventing moisture from entering from the outside. Battery life can be extended.

なお、リード加熱部５１と中間加熱部５３との段差と、中間加熱部５３と周辺加熱部５２との段差とは同じ高さでなくともよい。また、図３では隅部Ｃ1、Ｃ2の部分のヒータ５０ａ、５０ｂの形状が直角となっている例を示しているが、これに限定されるものではない。例えば、ヒータ５０ａ、５０ｂの隅部Ｃ1の形状を、シーラント１１の斜面（隅部Ｃ1に対応する部分）に併せて傾斜面をもたせたり、あるいはＲ形状としてもよい。 The step between the lead heating unit 51 and the intermediate heating unit 53 and the step between the intermediate heating unit 53 and the peripheral heating unit 52 do not have to be the same height. Further, FIG. 3 shows an example in which the shapes of the heaters 50a and 50b at the corners C 1 and C 2 are right angles, but the present invention is not limited to this. For example, the shape of the corner portion C 1 of the heaters 50a and 50b may be provided with an inclined surface in combination with the slope of the sealant 11 (the portion corresponding to the corner portion C 1 ), or may have an R shape.

また、本実施形態では中間加熱部５３によって段差が１段増加した構成としたが、隅部の空間容積をさらに小さくするために段差が２段以上増加する構成としてもよい。   In the present embodiment, the step is increased by one step by the intermediate heating unit 53, but the step may be increased by two or more steps in order to further reduce the space volume at the corner.

なお、本実施形態では、中間加熱部５３の潰し量を他の領域よりも大きい場合を説明したが、くびれの発生を防止可能であれば必ずしも中間加熱部５３の潰し量はそのような潰し量とすることはなく、Ａ1＜Ａ3＜Ａ2であってもよい（この場合、融着領域の幅の最も大きい場所は延出部とは異なる場所となる）。さらにいえば、リード部５１ｈ、中間平坦部５３ｈおよび周辺部５２ｈの厚さの関係が上述したようにｔ1＞ｔ2＞ｔ3であり、かつ中間平坦部５３ｈと延出部１１ｃとが重なり合っていれば（図３に示すＬ3の領域）、シール条件次第でくびれの発生は防止でき、本発明の効果は得られる。 In the present embodiment, the case where the amount of crushing of the intermediate heating unit 53 is larger than that of other regions has been described. However, if the occurrence of constriction can be prevented, the amount of crushing of the intermediate heating unit 53 is not necessarily limited to such a crushing amount. However, A 1 <A 3 <A 2 may be satisfied (in this case, the place where the width of the fusion region is the largest is a place different from the extension portion). More specifically, the relationship between the thicknesses of the lead portion 51h, the intermediate flat portion 53h, and the peripheral portion 52h is t 1 > t 2 > t 3 as described above, and the intermediate flat portion 53h and the extending portion 11c overlap each other. If so (the region of L 3 shown in FIG. 3), the occurrence of constriction can be prevented depending on the sealing conditions, and the effect of the present invention can be obtained.

また、上述した実施形態においては、中間加熱部５３によってヒートプレスすることで中間平坦部５３ｈの熱融着部７は、周辺部５２ｈの幅ａよりも広い幅ｃになると説明したが、本発明はこれに限定されるものではなく、幅ａと同等以上の幅となりくびれが生じなければ本発明の効果は得られる。   Further, in the above-described embodiment, it has been described that the heat fusion part 7 of the intermediate flat part 53h has a width c wider than the width a of the peripheral part 52h by performing heat press with the intermediate heating part 53. However, the present invention is not limited to this, and the effect of the present invention can be obtained if the width is equal to or greater than the width a and no constriction occurs.

なお、本実施形態ではリード端子上に形成する被覆樹脂として耐熱性樹脂層と金属接着性樹脂層とを有する２層構造のシーラントを２枚用い、金属接着性樹脂層を内側にして互いに接合する場合としたが、その他の構成でもよく、例えば、金属接着性樹脂層のみからなるシーラントでもよく、２枚を接合せずに折り曲げた１枚を巻いてから接合してもよく、樹脂形成予定部に空間が設けられた金型にリード端子を挟み込み、その予定部に樹脂を流し込み、冷却または反応硬化により固体化することでリード端子上に樹脂を被覆する方法でもよい。延出部の厚さは図３ではリード端子と重なる部分より薄い例を示しているが、同じ厚さでもよい。この場合、断面を見たときに被覆樹脂の全体の外形形状は長方形になる。   In this embodiment, two sealants having a two-layer structure having a heat-resistant resin layer and a metal adhesive resin layer are used as the coating resin formed on the lead terminal, and are bonded to each other with the metal adhesive resin layer inside. However, other configurations may be used, for example, a sealant composed of only a metal-adhesive resin layer may be used, or two folded sheets may be joined without being joined, and a resin-formation scheduled part may be formed. Alternatively, a method may be used in which a lead terminal is sandwiched in a mold provided with a space, a resin is poured into a predetermined portion thereof, and the resin is coated on the lead terminal by solidification by cooling or reaction curing. Although the thickness of the extending portion is shown in FIG. 3 as being thinner than the portion overlapping the lead terminal, the same thickness may be used. In this case, when the cross section is viewed, the overall outer shape of the coating resin is rectangular.

また、上述した実施形態では、図１において延出部１１ｃがシーラント１１の両側２箇所形成された例を示したが、本願発明はこれに限定されるものではなく、本願発明はシーラント１１の片側にのみ延出部１１ｃが形成されているような場合も対象としている。   In the above-described embodiment, an example in which the extending portion 11c is formed at two places on both sides of the sealant 11 in FIG. 1 is shown, but the present invention is not limited to this, and the present invention is not limited to one side of the sealant 11. The case where the extending portion 11c is formed only in the case is also targeted.

１ フィルム外装電池
２ 電池要素
３ 集電部
４ リード端子
４ｃ 側端部
５ ラミネートフィルム
７ 熱融着部
１１ シーラント
１１ａ 耐熱性樹脂層
１１ｂ 金属接着性樹脂層
１１ｃ 延出部
１１ｄ 押出し面
５０ａ ヒータ
５１ リード加熱部
５１ｈ リード部
５２ 周辺加熱部
５２ｈ 周辺部
５３ 中間加熱部
５３ａ リード側端面
５３ｂ 周辺側端面
５３ｈ 中間平坦部 DESCRIPTION OF SYMBOLS 1 Film exterior battery 2 Battery element 3 Current collection part 4 Lead terminal 4c Side edge part 5 Laminated film 7 Heat-fusion part 11 Sealant 11a Heat resistant resin layer 11b Metal-adhesive resin layer 11c Extension part 11d Extrusion surface 50a Heater 51 Lead Heating part 51h Lead part 52 Peripheral heating part 52h Peripheral part 53 Intermediate heating part 53a Lead side end face 53b Peripheral side end face 53h Intermediate flat part

Claims (2)

セパレータと前記セパレータに交互に積層する電極とを含む電気デバイス要素と、
前記電気デバイス要素に接続された電極端子を被覆する被覆部材と、
前記電気デバイス要素の周辺部および前記被覆部材を熱融着して電気デバイス要素を封止する、熱融着性樹脂層を備えた外装体フィルムと、
前記電極端子と前記被覆部材と前記外装体フィルムとが接合された領域を含む第１の接合領域と、
前記外装体フィルムどうしが接合された第２の接合領域と、
前記被覆部材どうしが接合された延出部と前記外装体フィルムとが接合された領域を含む第３の接合領域と、を有し、
前記第３の接合領域は前記第１の接合領域と前記第２の接合領域との間に形成され、
前記第３の接合領域の厚みは、前記第１の接合領域の厚みよりも薄く、前記第２の接合領域の厚みよりも厚く、
前記第３の接合領域における前記熱融着性樹脂層は、前記第２の接合領域における前記熱融着性樹脂層よりも厚みの薄い領域を含み、
前記第３の接合領域の前記延出部における熱融着部の幅は、前記第２の接合領域の前記外装体フィルムどうしの熱融着部の幅以上である、フィルム外装電気デバイス。 An electrical device element comprising a separator and electrodes alternately stacked on the separator ;
A covering member covering an electrode terminal connected to the electrical device element;
An exterior body film provided with a heat-fusible resin layer that seals the electric device element by thermally fusing the peripheral portion of the electric device element and the covering member ;
Before Symbol electrode terminal and the cover member and the outer body film and is bonded area including first junction region,
A second joining region in which the exterior body films are joined together;
The covering member with each other is extending portion joined to the said outer body film is bonded areas possess a including third bonding region, and
The third bonding region is formed between the first bonding region and the second bonding region;
The thickness of the third bonding region is thinner than the thickness of the first bonding region, and thicker than the thickness of the second bonding region,
The heat-fusible resin layer in the third bonding region includes a region that is thinner than the heat-fusible resin layer in the second bonding region,
The third width of the heat-sealed portion in the extending portion of the junction region is greater than width of the heat-sealed portion of each other said outer body film of the second junction region, a film-covered electrical device. 前記延出部の、前記電極端子から延出している方向への長さは、前記第２の接合領域の前記外装体フィルムどうしの熱融着部の幅以下である、請求項１に記載のフィルム外装電気デバイス。The length of the extension part in a direction extending from the electrode terminal is equal to or less than a width of a heat-sealed part between the exterior body films in the second bonding region. Film exterior electrical device.
JP2012136790A 2012-06-18 2012-06-18 Film exterior electrical device Active JP5561315B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2012136790A JP5561315B2 (en) 2012-06-18 2012-06-18 Film exterior electrical device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2012136790A JP5561315B2 (en) 2012-06-18 2012-06-18 Film exterior electrical device

Related Parent Applications (1)

Application Number Title Priority Date Filing Date
JP2006066309A Division JP5082263B2 (en) 2006-03-10 2006-03-10 Method for manufacturing film-covered electrical device

Publications (2)

Publication Number Publication Date
JP2012199248A JP2012199248A (en) 2012-10-18
JP5561315B2 true JP5561315B2 (en) 2014-07-30

Family

ID=47181223

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2012136790A Active JP5561315B2 (en) 2012-06-18 2012-06-18 Film exterior electrical device

Country Status (1)

Country Link
JP (1) JP5561315B2 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101811836B1 (en) 2015-01-14 2017-12-22 주식회사 엘지화학 A Sealing Device For Battery Case having an unsealing portion employed with possibly adjusting heights
KR101843824B1 (en) 2015-05-04 2018-05-14 주식회사 엘지화학 A Sealing Device For Battery Case having an unsealing portion employed with possibly adjusting heights
CN108140759A (en) * 2015-12-16 2018-06-08 株式会社Lg化学 The water-tight equipment for battery case with increased pressure and applying heat area

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2014091544A1 (en) * 2012-12-10 2014-06-19 藤森工業株式会社 Electrode lead wire member for nonaqueous batteries
JP6825813B2 (en) * 2016-02-23 2021-02-03 積水化学工業株式会社 Manufacturing method of sealing device and secondary battery
KR102549539B1 (en) * 2019-03-28 2023-06-29 주식회사 엘지에너지솔루션 Sealing apparatus and method for secondary battery
CN112072013B (en) 2019-05-17 2023-12-29 宁德时代新能源科技股份有限公司 Secondary battery
JP7398050B2 (en) * 2020-02-04 2023-12-14 トヨタ自動車株式会社 Laminated battery and its manufacturing method
CN115832398B (en) * 2022-12-21 2023-08-01 重庆太蓝新能源有限公司 Soft packet of battery encapsulation frock and soft packet of battery encapsulation equipment

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4498514B2 (en) * 2000-01-18 2010-07-07 大日本印刷株式会社 Battery container
JP4581167B2 (en) * 2000-01-19 2010-11-17 ソニー株式会社 Heat sealing method and heat sealing apparatus for polymer battery electrode
JP2002190283A (en) * 2000-12-21 2002-07-05 At Battery:Kk Manufacturing method of thin secondary battery and thin secondary battery
JP2005353503A (en) * 2004-06-14 2005-12-22 Sii Micro Parts Ltd Thin electrochemical cell
JP5082263B2 (en) * 2006-03-10 2012-11-28 日本電気株式会社 Method for manufacturing film-covered electrical device

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101811836B1 (en) 2015-01-14 2017-12-22 주식회사 엘지화학 A Sealing Device For Battery Case having an unsealing portion employed with possibly adjusting heights
KR101843824B1 (en) 2015-05-04 2018-05-14 주식회사 엘지화학 A Sealing Device For Battery Case having an unsealing portion employed with possibly adjusting heights
CN108140759A (en) * 2015-12-16 2018-06-08 株式会社Lg化学 The water-tight equipment for battery case with increased pressure and applying heat area

Also Published As

Publication number Publication date
JP2012199248A (en) 2012-10-18

Similar Documents

Publication Publication Date Title
JP5082263B2 (en) Method for manufacturing film-covered electrical device
JP5561315B2 (en) Film exterior electrical device
JP6721053B2 (en) Power storage device and method of manufacturing power storage device
US20110076529A1 (en) Film-covered electrical device and assembled battery
JP6315572B2 (en) Electrochemical cell
JP2009224147A (en) Film-coated electric device and battery pack
JP7088410B2 (en) Power storage module
JP2008016337A (en) Lead wire covering film material for battery, and film-covered lead wire for battery
WO2018105096A1 (en) Film-covered battery production method and film-covered battery
JP3931983B2 (en) Structure of electric lead part, electric device having the lead part structure, battery and assembled battery
JP2000223090A (en) Battery
JP3696028B2 (en) Battery having film sealing structure and manufacturing method thereof
JP6342231B2 (en) Battery negative terminal
JP6491548B2 (en) Secondary battery manufacturing method and manufacturing apparatus
JP2019194949A (en) Laminate type battery
JP7103272B2 (en) Power storage module and its manufacturing method
JP6227756B2 (en) Battery terminals and batteries
EP2975674B1 (en) Fabrication method of battery
JP2015100976A (en) Seal component production device and method
JP5725113B2 (en) Battery pack and film-covered electrical device
JP2006156161A (en) Sealed battery
JP3908917B2 (en) Manufacturing method of electric double layer capacitor
JP2002190283A (en) Manufacturing method of thin secondary battery and thin secondary battery
JP2019003842A (en) Film sheathing battery and manufacturing method therefor
JP2017228381A (en) Battery and manufacturing method of battery

Legal Events

Date Code Title Description
A521 Request for written amendment filed

Free format text: JAPANESE INTERMEDIATE CODE: A523

Effective date: 20120712

A131 Notification of reasons for refusal

Free format text: JAPANESE INTERMEDIATE CODE: A131

Effective date: 20131203

A521 Request for written amendment filed

Free format text: JAPANESE INTERMEDIATE CODE: A523

Effective date: 20140203

TRDD Decision of grant or rejection written
RD04 Notification of resignation of power of attorney

Free format text: JAPANESE INTERMEDIATE CODE: A7424

Effective date: 20140508

A01 Written decision to grant a patent or to grant a registration (utility model)

Free format text: JAPANESE INTERMEDIATE CODE: A01

Effective date: 20140513

A61 First payment of annual fees (during grant procedure)

Free format text: JAPANESE INTERMEDIATE CODE: A61

Effective date: 20140526

R150 Certificate of patent or registration of utility model

Ref document number: 5561315

Country of ref document: JP

Free format text: JAPANESE INTERMEDIATE CODE: R150