JP2017220331A - Lead member - Google Patents

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JP2017220331A
JP2017220331A JP2016112792A JP2016112792A JP2017220331A JP 2017220331 A JP2017220331 A JP 2017220331A JP 2016112792 A JP2016112792 A JP 2016112792A JP 2016112792 A JP2016112792 A JP 2016112792A JP 2017220331 A JP2017220331 A JP 2017220331A
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resin film
lead conductor
lead
titanium dioxide
conductor
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岡田　智之
Tomoyuki Okada
智之 岡田
圭太郎 宮澤
Keitaro Miyazawa
圭太郎 宮澤
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Sumitomo Electric Industries Ltd
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Sumitomo Electric Industries Ltd
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Priority to JP2016112792A priority Critical patent/JP2017220331A/en
Priority to KR1020170069760A priority patent/KR101946153B1/en
Priority to CN201710418688.9A priority patent/CN107464910A/en
Publication of JP2017220331A publication Critical patent/JP2017220331A/en
Pending legal-status Critical Current

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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/50—Current conducting connections for cells or batteries
    • H01M50/543—Terminals
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B7/00—Insulated conductors or cables characterised by their form
    • H01B7/08—Flat or ribbon cables
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B1/00—Conductors or conductive bodies characterised by the conductive materials; Selection of materials as conductors
    • H01B1/06—Conductors or conductive bodies characterised by the conductive materials; Selection of materials as conductors mainly consisting of other non-metallic substances
    • H01B1/08—Conductors or conductive bodies characterised by the conductive materials; Selection of materials as conductors mainly consisting of other non-metallic substances oxides
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B3/00—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties
    • H01B3/18—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances
    • H01B3/30—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances plastics; resins; waxes
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B7/00—Insulated conductors or cables characterised by their form
    • H01B7/02—Disposition of insulation
    • 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

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  • Physics & Mathematics (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Sealing Battery Cases Or Jackets (AREA)
  • Connection Of Batteries Or Terminals (AREA)
  • Laminated Bodies (AREA)

Abstract

PROBLEM TO BE SOLVED: To provide a lead member that makes it easy to identify an insulation film and an inclusion body when the lead member is stuck to the inclusion body.SOLUTION: A lead member 1 comprises a lead conductor 2 and a resin film 3. The resin film 3 is formed wider than the lead conductor 2 in a width direction of the lead conductor 2. The resin films 3 are stuck to both faces of the lead conductor 2 so as to project from both sides of the lead conductor 2 in the width direction thereof. The resin films 3 on both the faces and projecting from both the sides are stuck together. Each resin film is formed shorter than the lead conductor 2 in a longitudinal direction of the lead conductor 2. The resin films 3 are not stuck to the ends of the lead conductor 2 in the longitudinal direction thereof. The lead conductor 2 is made of a metal foil. Each resin film 3 has one or more layers. At least one of the layers contains 0.1 to 5.0 wt.% titanium dioxide. The particle diameter of the titanium dioxide is 0.1 to 5 μm. The resin films 3 containing the titanium dioxide make it easy to identify an inclusion body.SELECTED DRAWING: Figure 2

Description

本発明は、リード部材に関するものである。   The present invention relates to a lead member.

特許文献１には、平面導体の両面に互いに物理的特徴の異なる絶縁樹脂フィルムを貼り合わせてなることを特徴とするリード部材が開示されている。   Patent Document 1 discloses a lead member characterized in that insulating resin films having different physical characteristics are bonded to both surfaces of a flat conductor.

登録実用新案第３１７８４９９号公報Registered Utility Model No. 3178499

リード部材を封入体に貼る時に、絶縁フィルムと封入体の位置合わせをする。この際に、絶縁フィルムが透明である場合又は着色が薄い場合には、絶縁フィルムの端を自動検出できない場合があり、位置合わせのエラーが発生することがある。   When the lead member is attached to the enclosure, the insulating film and the enclosure are aligned. At this time, if the insulating film is transparent or the color is light, the end of the insulating film may not be automatically detected, and an alignment error may occur.

本発明の目的は、リード部材を封入体に貼る時に、絶縁フィルムの端を容易に検出できるリード部材を提供することにある。   The objective of this invention is providing the lead member which can detect the edge of an insulating film easily, when sticking a lead member on an enclosure.

本発明のリード部材は、リード導体と樹脂フィルムとを備え、
前記樹脂フィルムが、前記リード導体の幅方向において、前記リード導体より幅が広く形成され、前記リード導体の幅方向の両側部からはみ出すように前記リード導体の両面に貼られるとともに、前記両側部からはみ出した両面の前記樹脂フィルム同士が貼り合わされており、かつ、前記リード導体の長手方向において、前記リード導体より長さが短く形成され、前記リード導体の長手方向の端には貼られてなく、
前記リード導体が金属箔であり、
前記樹脂フィルムが１以上の層を有し、
前記層のうちの少なくとも一層が０．１重量％〜５．０重量％の二酸化チタンを含有し、
前記二酸化チタンの粒径が０．１μｍ〜５μｍである。 The lead member of the present invention comprises a lead conductor and a resin film,
The resin film is formed wider than the lead conductor in the width direction of the lead conductor, and is pasted on both sides of the lead conductor so as to protrude from both sides of the width direction of the lead conductor. The protruding resin films on both sides are pasted together, and in the longitudinal direction of the lead conductor, the length is shorter than the lead conductor, and is not pasted on the longitudinal end of the lead conductor,
The lead conductor is a metal foil;
The resin film has one or more layers;
At least one of the layers contains 0.1 wt% to 5.0 wt% titanium dioxide;
The titanium dioxide has a particle size of 0.1 μm to 5 μm.

本発明によれば、リード部材を封入体に貼る時に、絶縁フィルムと封入体を容易に識別できるリード部材を提供することができる。   ADVANTAGE OF THE INVENTION According to this invention, when sticking a lead member to an enclosure, the lead member which can identify an insulating film and an enclosure can be provided easily.

リード部材付電池の構成例を示す外観図である。It is an external view which shows the structural example of the battery with a lead member. 本発明によるリード部材の一例を示す図であり、（Ａ）は平面図、（Ｂ）は幅方向の断面図、（Ｃ）は長手方向の断面図である。It is a figure which shows an example of the lead member by this invention, (A) is a top view, (B) is sectional drawing of the width direction, (C) is sectional drawing of a longitudinal direction.

［本発明の実施形態の説明］
最初に本発明の実施形態の内容を列記して説明する。
本願発明の実施形態に係るリード部材は、
（１）リード導体と樹脂フィルムとを備え、
前記樹脂フィルムが、前記リード導体の幅方向において、前記リード導体より幅が広く形成され、前記リード導体の幅方向の両側部からはみ出すように前記リード導体の両面に貼られるとともに、前記両側部からはみ出した両面の前記樹脂フィルム同士が貼り合わされており、かつ、前記リード導体の長手方向において、前記リード導体より長さが短く形成され、前記リード導体の長手方向の端には貼られてなく、
前記リード導体が金属箔であり、
前記樹脂フィルムが１以上の層を有し、
前記層のうちの少なくとも一層が０．１重量％〜５．０重量％の二酸化チタンを含有し、
前記二酸化チタンの粒径が０．１μｍ〜５μｍである。
この構成によれば、絶縁フィルムが不透明になり、目視又はカメラを通して絶縁フィルムの端の位置の検出が容易となるため、自動検出時にエラーが発生することを防ぐことができる。 [Description of Embodiment of the Present Invention]
First, the contents of the embodiment of the present invention will be listed and described.
The lead member according to the embodiment of the present invention is
(1) A lead conductor and a resin film are provided,
The resin film is formed wider than the lead conductor in the width direction of the lead conductor, and is pasted on both sides of the lead conductor so as to protrude from both sides of the width direction of the lead conductor. The protruding resin films on both sides are pasted together, and in the longitudinal direction of the lead conductor, the length is shorter than the lead conductor, and is not pasted on the longitudinal end of the lead conductor,
The lead conductor is a metal foil;
The resin film has one or more layers;
At least one of the layers contains 0.1 wt% to 5.0 wt% titanium dioxide;
The titanium dioxide has a particle size of 0.1 μm to 5 μm.
According to this configuration, the insulating film becomes opaque, and it becomes easy to detect the position of the end of the insulating film visually or through a camera. Therefore, it is possible to prevent an error from occurring during automatic detection.

（２）また、（１）のリード部材は、
前記樹脂フィルムが２以上の層を有し、
前記層のうちの一層が０．１重量％〜５．０重量％の前記二酸化チタンを含有することが好ましい。
この構成によれば、リード導体と接着する層や封入体と接着する最外層等で樹脂組成が異なる樹脂フィルムにおいても、目視又はカメラを通して絶縁フィルムの端を検出することが容易になる。また、樹脂フィルムの各層同士の識別も容易になる。 (2) Also, the lead member of (1)
The resin film has two or more layers;
It is preferable that one of the layers contains 0.1% to 5.0% by weight of the titanium dioxide.
According to this configuration, it is easy to detect the end of the insulating film visually or through a camera even in a resin film having a different resin composition such as a layer adhering to the lead conductor or an outermost layer adhering to the encapsulant. Moreover, each layer of the resin film can be easily identified.

（３）また、（２）のリード部材は、
前記一層が最外層であることが好ましい。
この構成によれば、最外層より内側の層に二酸化チタンを添加する場合に比べて、絶縁フィルの端の検出がより容易となり、かつ導体と樹脂フィルムの接着力が大きい。 (3) Also, the lead member of (2)
The one layer is preferably the outermost layer.
According to this configuration, the end of the insulating film can be detected more easily and the adhesion between the conductor and the resin film is greater than when titanium dioxide is added to the innermost layer than the outermost layer.

（４）また、（１）〜（３）のリード部材は、
前記二酸化チタンを含有する層が、さらに前記二酸化チタン以外の顔料を含有し、前記二酸化チタンとそれ以外の顔料の重量比が９：１〜７：３であることが好ましい。
この構成によれば、少ない顔料の添加量で樹脂フィルムの色が見やすくなり、絶縁フィルムと封入体とを識別することが容易になる。 (4) Also, the lead members (1) to (3)
It is preferable that the layer containing titanium dioxide further contains a pigment other than the titanium dioxide, and the weight ratio of the titanium dioxide and the other pigment is 9: 1 to 7: 3.
According to this configuration, it is easy to see the color of the resin film with a small amount of added pigment, and it becomes easy to distinguish between the insulating film and the encapsulant.

［本発明の実施形態の詳細］
続いて、添付図面を参照しながら、本発明のリード部材に係る実施の形態について説明する。
図１は、リード部材付電池の構成例を示す外観図である。図２は、本発明によるリード部材の一例を示す図であり、（Ａ）は平面図、（Ｂ）は幅方向の断面図、（Ｃ）は長手方向の断面図である。図中、１はリード部材、２はリード導体、３は樹脂フィルム、４は封入体、５はシール部、６はリード部材付電池を示す。 [Details of the embodiment of the present invention]
Next, embodiments of the lead member of the present invention will be described with reference to the accompanying drawings.
FIG. 1 is an external view showing a configuration example of a battery with a lead member. 2A and 2B are views showing an example of the lead member according to the present invention, where FIG. 2A is a plan view, FIG. 2B is a cross-sectional view in the width direction, and FIG. 2C is a cross-sectional view in the longitudinal direction. In the figure, 1 is a lead member, 2 is a lead conductor, 3 is a resin film, 4 is an enclosure, 5 is a seal portion, and 6 is a battery with a lead member.

図１のリード部材付電池６は、より具体的には、正極板と負極板とをセパレータを介して積層した積層電極群（図示省略）と電解液を、金属箔を含む多層フィルムからなる封入体４に収納し、正極板に接続したリード部材１ａ、負極板に接続したリード部材１ｂを、樹脂フィルム３を介して封入体４のシール部から密閉封止した状態で取り出して構成される。封入体４に用いる多層フィルムは、金属箔の両面に樹脂フィルムを貼り合わせて形成される。   More specifically, the battery 6 with a lead member in FIG. 1 is a sealed electrode group (not shown) in which a positive electrode plate and a negative electrode plate are laminated via a separator, and an electrolytic solution made of a multilayer film including a metal foil. The lead member 1 a housed in the body 4 and connected to the positive electrode plate and the lead member 1 b connected to the negative electrode plate are taken out from the seal portion of the encapsulant body 4 through the resin film 3 and configured. The multilayer film used for the enclosure 4 is formed by bonding resin films on both sides of a metal foil.

リード部材１（１ａ、１ｂ）は、リード導体２と樹脂フィルム３とを備えている。   The lead member 1 (1a, 1b) includes a lead conductor 2 and a resin film 3.

リード導体２は、アルミニウム、ニッケル、銅、ニッケルめっきされた銅などの金属が使用される。   The lead conductor 2 is made of a metal such as aluminum, nickel, copper, or nickel-plated copper.

樹脂フィルム３は、リード部材１が封入体４にヒートシールされて封着される部分に設けられ、リード導体２の両面を挟むように接着または融着により貼り付けて形成される。また、樹脂フィルム３は、リード導体２よりも幅が広く、リード導体２の幅方向の両側部からはみ出すように樹脂フィルム３同士が貼り合わせられている。さらに、樹脂フィルム３はリード導体２よりも長さが短く、リード導体２の長手方向の端には貼られない。   The resin film 3 is provided at a portion where the lead member 1 is heat-sealed and sealed with the encapsulant 4 and is formed by adhering or bonding so as to sandwich both surfaces of the lead conductor 2. The resin film 3 is wider than the lead conductor 2, and the resin films 3 are bonded to each other so as to protrude from both side portions of the lead conductor 2 in the width direction. Further, the resin film 3 is shorter than the lead conductor 2 and is not attached to the longitudinal end of the lead conductor 2.

樹脂フィルム３は複数の層３ａ、３ｂを有している。この樹脂フィルム３はあくまで実施形態の１例であり、１以上の層を有する樹脂フィルムであってもよい。ここで、２以上の層を有する樹脂フィルムは、他の層の組成と異なる組成からなる層を複数有する樹脂フィルムを表す。具体的には、樹脂フィルムを形成する一つの層に含まれる成分が他の層に含まれる成分と異なっている、または一つの層に含まれる成分の比率が他の層に含まれる成分の比率と異なっている樹脂フィルムを表す。   The resin film 3 has a plurality of layers 3a and 3b. This resin film 3 is merely an example of the embodiment, and may be a resin film having one or more layers. Here, the resin film having two or more layers represents a resin film having a plurality of layers having a composition different from the composition of the other layers. Specifically, the component contained in one layer forming the resin film is different from the component contained in the other layer, or the proportion of the component contained in one layer is the proportion of the component contained in the other layer. Represents a different resin film.

樹脂フィルム３の樹脂材料として用いるポリオレフィン系樹脂は、ポリエチレン、ポリプロピレン、アイオノマー樹脂、変性ポリオレフィン等が例示され、リード導体２や樹脂フィルム３同士との接着性の点から接着性ポリオレフィン樹脂が好ましく使用される。なお、接着性ポリオレフィン樹脂とは、マレイン酸、アクリル酸、メタクリル酸、無水マレイン酸等のカルボン酸や、エポキシ等で変性されて接着性の官能基を持つポリオレフィン樹脂をいう。特に、無水マレイン酸変性ポリオレフィン樹脂は金属との接着性、シール性に優れているので好ましい。これらのポリオレフィン系樹脂は熱可塑性樹脂であり、ヒートシール時に加熱により溶融して封入体４とリード導体２とを樹脂フィルム３を介して接着させる。   Examples of the polyolefin resin used as the resin material for the resin film 3 include polyethylene, polypropylene, ionomer resin, and modified polyolefin. Adhesive polyolefin resin is preferably used from the viewpoint of adhesion between the lead conductor 2 and the resin film 3. The The adhesive polyolefin resin refers to a polyolefin resin having an adhesive functional group modified with carboxylic acid such as maleic acid, acrylic acid, methacrylic acid or maleic anhydride, or epoxy. In particular, maleic anhydride-modified polyolefin resin is preferable because it is excellent in adhesion to metal and sealability. These polyolefin resins are thermoplastic resins, and are melted by heating at the time of heat sealing to bond the encapsulant 4 and the lead conductor 2 via the resin film 3.

樹脂フィルム３の樹脂材料として用いるエラストマーとしては、ポリブタジエン、ＥＰＤＭ、ＥＰＭ、アクリルゴム、熱可塑性エラストマー等が例示され、水添スチレン・ブタジエンゴム、１，２−ポリブタジエン等が好ましく使用できる。   Examples of the elastomer used as the resin material of the resin film 3 include polybutadiene, EPDM, EPM, acrylic rubber, thermoplastic elastomer, and the like, and hydrogenated styrene / butadiene rubber, 1,2-polybutadiene, and the like can be preferably used.

樹脂フィルム３の外側の層である層３ｂは、０．１重量％〜５．０重量％の二酸化チタンを含有する。ここで、当該二酸化チタンには、粒径が０．１μｍ〜５μｍであるものが用いられる。二酸化チタンの粒径はある分布をもつものである。樹脂フィルムに含まれる全ての二酸化チタンの粒径が前記範囲に含まれなくとも、粒径の分布のピーク値が前記範囲に含まれればよい。樹脂フィルムに含まれる二酸化チタンの９０％以上が前記範囲の粒径を有するものであることが好ましい。層３ｂにおける二酸化チタンの含有量が０．１重量％未満であると、不透明性が不十分で樹脂フィルム３と封入体４との識別が容易ではない。また、層３ｂにおける二酸化チタンの含有量が５．０重量％より大きいと、二酸化チタンの凝集物が生じて樹脂フィルム３の見た目が悪く、また樹脂フィルム３と封入体４との接着を妨げることがある。   The layer 3b which is an outer layer of the resin film 3 contains 0.1% by weight to 5.0% by weight of titanium dioxide. Here, the titanium dioxide having a particle size of 0.1 μm to 5 μm is used. The particle size of titanium dioxide has a certain distribution. Even if the particle size of all titanium dioxide contained in the resin film is not included in the range, the peak value of the particle size distribution may be included in the range. It is preferable that 90% or more of the titanium dioxide contained in the resin film has a particle size in the above range. When the content of titanium dioxide in the layer 3b is less than 0.1% by weight, the opacity is insufficient and the resin film 3 and the encapsulant 4 cannot be easily distinguished. Further, if the content of titanium dioxide in the layer 3b is larger than 5.0% by weight, aggregates of titanium dioxide are formed, the appearance of the resin film 3 is bad, and the adhesion between the resin film 3 and the encapsulant 4 is hindered. There is.

なお、本実施形態において、層３ｂが二酸化チタンを含有しているが、本発明はこれに限定されず、内側の層である層３ａのみが二酸化チタンを含んでもよく、また層３ａ及び層３ｂの両方が二酸化チタンを含んでもよい。樹脂フィルム３の最外層（本実施形態においては層３ｂ）が二酸化チタンを含む場合は、それより内側の層のみが二酸化チタンを含む場合に比べて、樹脂フィルム３の端を容易に検出することができる（樹脂フィルムと導体との境目の検出および樹脂フィルムと封入体の境目との検出が容易にできる）ため好ましい。   In the present embodiment, the layer 3b contains titanium dioxide, but the present invention is not limited to this, and only the layer 3a that is the inner layer may contain titanium dioxide, and the layers 3a and 3b Both may contain titanium dioxide. When the outermost layer (layer 3b in this embodiment) of the resin film 3 contains titanium dioxide, the edge of the resin film 3 can be easily detected as compared with the case where only the inner layer contains titanium dioxide. (The detection of the boundary between the resin film and the conductor and the detection of the boundary between the resin film and the enclosure can be easily performed).

また、樹脂フィルム３の層３ｂは、０．１重量％〜５重量％の二酸化チタンを含有し、さらに二酸化チタン以外の顔料を含有してもよい。ここで、二酸化チタン以外の顔料は、任意の顔料（無機顔料および有機顔料）から選択される。例えば大日精化工業株式会社製のＰＶ ＦＶ０１７１（青色）、ＰＶ １３４３４（黄色）及びＰＶ ＦＶ ０１２３（赤色）などをあげることができる。二酸化チタンと当該顔料とを混ぜることで樹脂フィルムの色が濁る（透明でなくなる）。この結果、樹脂フィルム３の検出が容易となる。二酸化チタンとそれ以外の顔料との比率（重量比）は９：１〜３：７とすることが好ましい。二酸化チタンを多く入れることで絶縁フィルムを不透明として絶縁フィルムを光学的に検出することおよび目視で色を識別することが容易となる。   Moreover, the layer 3b of the resin film 3 contains 0.1% by weight to 5% by weight of titanium dioxide, and may further contain a pigment other than titanium dioxide. Here, the pigment other than titanium dioxide is selected from arbitrary pigments (inorganic pigments and organic pigments). Examples thereof include PV FV0171 (blue), PV 13434 (yellow), and PV FV 0123 (red) manufactured by Dainichi Seika Kogyo Co., Ltd. Mixing titanium dioxide and the pigment makes the color of the resin film turbid (not transparent). As a result, the resin film 3 can be easily detected. The ratio (weight ratio) between titanium dioxide and other pigments is preferably 9: 1 to 3: 7. By adding a large amount of titanium dioxide, it becomes easy to optically detect the insulating film by making the insulating film opaque and to distinguish the color visually.

なお、層３ａのみが二酸化チタンとそれ以外の顔料とを含んでもよく、また層３ａ及び層３ｂの両方が二酸化チタンとそれ以外の顔料とを含んでもよい。   Only the layer 3a may contain titanium dioxide and other pigments, and both the layer 3a and the layer 3b may contain titanium dioxide and other pigments.

樹脂フィルム３の各層３ａ、３ｂには必要に応じて酸化防止剤、難燃剤、紫外線吸収剤、光安定剤、熱安定剤、滑材等の各種添加剤を混合することが出来る。これらの材料を、オープンロール、加圧ニーダー、単軸混合器、２軸混合器等の既知の混合装置を用いて混合し、押出成形等によって樹脂フィルム３の各層３ａ、３ｂを作成する。   Various additives such as an antioxidant, a flame retardant, an ultraviolet absorber, a light stabilizer, a heat stabilizer, and a lubricant can be mixed in each layer 3a, 3b of the resin film 3 as necessary. These materials are mixed using a known mixing device such as an open roll, a pressure kneader, a single screw mixer, or a two screw mixer, and the layers 3a and 3b of the resin film 3 are formed by extrusion molding or the like.

樹脂フィルム３の各層３ａ、３ｂは、架橋して使用することもできる。樹脂を架橋することで耐熱性を高めることができ、使用時の温度が上がった場合の接着力の低下や、リード導体２と封入体４の金属箔との短絡を防止することが出来る。生産性向上の観点から、電離放射線の照射による架橋を行うことが好ましい。   Each layer 3a, 3b of the resin film 3 can be used after being crosslinked. By cross-linking the resin, the heat resistance can be increased, and a decrease in adhesive strength when the temperature during use is increased and a short circuit between the lead conductor 2 and the metal foil of the encapsulant 4 can be prevented. From the viewpoint of improving productivity, it is preferable to perform crosslinking by irradiation with ionizing radiation.

樹脂フィルム３の厚さは、適宜選択することができる。特に、樹脂フィルム３の厚さが２０μｍ以上であると、薄過ぎて破損するといった不具合が生じ難く、リード導体２と封入体４（特に金属箔）との間の絶縁を良好に確保できて好ましい。樹脂フィルム３の厚さが厚いほど、破損し難い。しかし、樹脂フィルム３が厚過ぎると、リード部材１の厚肉化、ひいては電池６の大型化や厚肉化を招く。従って、樹脂フィルム３の厚さは、２０μｍ以上１００μｍ以下が好ましく、３０μｍ以上８０μｍ以下がより好ましい。ここでの樹脂フィルム３の厚さとは、リード導体２の一面にのみ設けられた樹脂フィルム３の複数層の合計厚さとする。   The thickness of the resin film 3 can be selected as appropriate. In particular, it is preferable that the thickness of the resin film 3 is 20 μm or more because it is difficult to cause a problem that the resin film 3 is too thin and damaged, and insulation between the lead conductor 2 and the encapsulant 4 (particularly metal foil) can be secured satisfactorily. . The thicker the resin film 3 is, the more difficult it is to break. However, if the resin film 3 is too thick, the lead member 1 is increased in thickness, and as a result, the battery 6 is increased in size and thickness. Therefore, the thickness of the resin film 3 is preferably 20 μm or more and 100 μm or less, and more preferably 30 μm or more and 80 μm or less. Here, the thickness of the resin film 3 is the total thickness of a plurality of layers of the resin film 3 provided only on one surface of the lead conductor 2.

封入体４の最内層のフィルムは、例えば、樹脂フィルム３と同様の樹脂フィルムが用いられる。   For example, a resin film similar to the resin film 3 is used as the innermost layer film of the enclosure 4.

次に発明を実施するための形態を実施例により説明する。実施例は本発明の範囲を限定するものではない。   Next, modes for carrying out the invention will be described by way of examples. The examples are not intended to limit the scope of the invention.

表１、表２に示す組成の層を有する２層構造の樹脂フィルムを作製した。そして、当該樹脂フィルムを表１、表２に示す組成の層が外側になるように互いに張り合わせたサンプルを作製した。当該サンプルを封入体に貼り合わせる際の樹脂フィルムと封入体との位置判定を評価した。詳細には、ワークに光を当てて透過光量を受けて画像を得た。この画像を見て採寸（位置合わせ）し、不良を検出した。正確に位置判定が行えたものを合格、位置判定と実際の位置が合っていなかったものを不合格とした。また、作成した樹脂フィルムの外観を観察し、凝集物が生じていないものを合格、凝集物が生じているものを不合格とした。なお、二酸化チタンの粒径は分布のピークの値を示す。   Resin films having a two-layer structure having layers having the compositions shown in Tables 1 and 2 were produced. And the sample which bonded together the said resin film so that the layer of the composition shown in Table 1 and Table 2 might become an outer side was produced. The position determination of the resin film and the inclusion body when the sample was bonded to the inclusion body was evaluated. Specifically, an image was obtained by irradiating the work with light and receiving a transmitted light amount. The image was measured (positioned) and a defect was detected. The case where the position was correctly determined was accepted, and the case where the position was not correctly matched with the actual position was rejected. Moreover, the external appearance of the produced resin film was observed, and the thing in which the aggregate was not produced passed, and the thing in which the aggregate was produced was made unacceptable. In addition, the particle diameter of titanium dioxide shows the value of the peak of distribution.

Figure 2017220331
Figure 2017220331

Figure 2017220331
Figure 2017220331

例１〜例７は、樹脂フィルムと封入体との位置判定が正確に行われ、また外観上も凝集物が生じていなかった。これに対し、例８では凝集物が生じていることが外観から確認され、また封入体との接着が例１〜例７と比較して弱いことが確認された。また、例９〜１３では樹脂フィルムと封入体との位置判定が正確に行われず、位置合わせが困難であった。   In Examples 1 to 7, the position of the resin film and the inclusion body was accurately determined, and no agglomerate was generated in appearance. On the other hand, in Example 8, it was confirmed from the appearance that aggregates were formed, and it was confirmed that the adhesion with the inclusion body was weaker than in Examples 1 to 7. Moreover, in Examples 9-13, position determination with a resin film and an enclosure was not performed correctly, but position alignment was difficult.

１：リード部材、１ａ：正極板に接続したリード部材、１ｂ：負極板に接続したリード部材、２：導体、２ａ：正極板に接続した導体、２ｂ：負極板に接続したリード導体、３：樹脂フィルム、３ａ：接着層、３ｂ：最外層、４：封入体、５：シール部、６：リード部材付電池 1: Lead member, 1a: Lead member connected to positive plate, 1b: Lead member connected to negative plate, 2: Conductor, 2a: Conductor connected to positive plate, 2b: Lead conductor connected to negative plate, 3: Resin film, 3a: adhesive layer, 3b: outermost layer, 4: encapsulant, 5: seal part, 6: battery with lead member

Claims (4)

リード導体と樹脂フィルムとを備え、
前記樹脂フィルムが、前記リード導体の幅方向において、前記リード導体より幅が広く形成され、前記リード導体の幅方向の両側部からはみ出すように前記リード導体の両面に貼られるとともに、前記両側部からはみ出した両面の前記樹脂フィルム同士が貼り合わされており、かつ、前記リード導体の長手方向において、前記リード導体より長さが短く形成され、前記リード導体の長手方向の端には貼られてなく、
前記リード導体が金属箔であり、
前記樹脂フィルムが１以上の層を有し、
前記層のうちの少なくとも一層が０．１重量％〜５．０重量％の二酸化チタンを含有し、
前記二酸化チタンの粒径が０．１μｍ〜５μｍである、
リード部材。 With lead conductor and resin film,
The resin film is formed wider than the lead conductor in the width direction of the lead conductor, and is pasted on both sides of the lead conductor so as to protrude from both sides of the width direction of the lead conductor. The protruding resin films on both sides are pasted together, and in the longitudinal direction of the lead conductor, the length is shorter than the lead conductor, and is not pasted on the longitudinal end of the lead conductor,
The lead conductor is a metal foil;
The resin film has one or more layers;
At least one of the layers contains 0.1 wt% to 5.0 wt% titanium dioxide;
The titanium dioxide has a particle size of 0.1 μm to 5 μm,
Lead member. 前記樹脂フィルムが２以上の層を有し、
前記層のうちの一層が０．１重量％〜５．０重量％の前記二酸化チタンを含有する、
請求項１に記載のリード部材。 The resin film has two or more layers;
One of the layers contains from 0.1 wt% to 5.0 wt% of the titanium dioxide;
The lead member according to claim 1. 前記一層が最外層である、請求項２に記載のリード部材。   The lead member according to claim 2, wherein the one layer is an outermost layer. 前記二酸化チタンを含有する層が、さらに前記二酸化チタン以外の顔料を含有し、前記二酸化チタンとそれ以外の顔料の重量比が９：１〜７：３である、請求項１〜請求項３のいずれか一項に記載のリード部材。   The layer containing titanium dioxide further contains a pigment other than the titanium dioxide, and the weight ratio of the titanium dioxide to the other pigment is 9: 1 to 7: 3. The lead member according to any one of claims.
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