JP2003086233A - Flat plate type battery - Google Patents

Flat plate type battery

Info

Publication number
JP2003086233A
JP2003086233A JP2001272244A JP2001272244A JP2003086233A JP 2003086233 A JP2003086233 A JP 2003086233A JP 2001272244 A JP2001272244 A JP 2001272244A JP 2001272244 A JP2001272244 A JP 2001272244A JP 2003086233 A JP2003086233 A JP 2003086233A
Authority
JP
Japan
Prior art keywords
electrode
negative electrode
active material
material layer
battery
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.)
Pending
Application number
JP2001272244A
Other languages
Japanese (ja)
Other versions
JP2003086233A5 (en
Inventor
Shigeru Aihara
Atsushi Arakane
Takashi Nishimura
Daigo Takemura
茂 相原
大吾 竹村
淳 荒金
隆 西村
Original Assignee
Mitsubishi Electric Corp
三菱電機株式会社
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 Mitsubishi Electric Corp, 三菱電機株式会社 filed Critical Mitsubishi Electric Corp
Priority to JP2001272244A priority Critical patent/JP2003086233A/en
Publication of JP2003086233A publication Critical patent/JP2003086233A/en
Publication of JP2003086233A5 publication Critical patent/JP2003086233A5/ja
Application status is Pending legal-status Critical

Links

Classifications

    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02PCLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P70/00Climate change mitigation technologies in the production process for final industrial or consumer products
    • Y02P70/50Manufacturing or production processes characterised by the final manufactured product
    • Y02P70/54Manufacturing of lithium-ion, lead-acid or alkaline secondary batteries

Abstract

PROBLEM TO BE SOLVED: To provide a flat plate type battery in which productivity can be enhanced and weight reduction and realization of thin-type of a battery can be aimed at. SOLUTION: This is the flat plate type battery which has an electron insulation property and which is composed of a separator and a positive electrode and a negative electrode wherein at least one of the positive electrode and the negative electrode is adhered to the separator beforehand, and which is press-worked to form the flat plate after the electrode and the separator are wound up in a flat-plate state or in the oval state, and a joining member is omitted in a range from the end part of the electrode positioned at the central part of the flat plate type battery to the first folding part and in the innermost periphery of the flat plate type battery.

Description

【発明の詳細な説明】 【0001】 【発明の属する技術分野】本発明は平板型電池およびその製法に関する。 BACKGROUND OF THE INVENTION [0001] [Technical Field of the Invention The present invention relates to a plate battery and its manufacturing method. さらに詳しくは、電池の生産性を向上させ、正極と負極を接着するリチウムイオン電池またはリチウムポリマー電池のエネルギー密度を向上させることができる渦巻き型構造を有する平板型電池の構造およびその製法に関する。 More specifically, to improve the productivity of the battery, on the structure and its manufacturing method of the flat-type battery having a spiral structure which can improve the energy density of the lithium-ion battery or a lithium polymer battery for bonding the positive electrode and the negative electrode. 【0002】 【従来の技術】近年における携帯用電子機器の小型および薄型化のために、この電子機器の電源として用いる電池、とくに繰り返し充電可能な二次電池に対しての小型および薄型化の性能向上が求められている。 [0002] To reduce the size and thickness of portable electronic devices in Recently, the performance of the small and thin with respect to use batteries, especially repeatedly rechargeable secondary battery as a power source of the electronic apparatus improvement has been demanded. 電子機器をより長時間駆動することができ、軽量で持ち運びが容易で、かつ高容量の電池として、リチウムイオン二次電池や電池の一部にポリマーを使用したポリマーリチウム二次電池が注目されている。 Can be longer drives the electronic device, easy to carry lightweight, and as a high-capacity battery, a polymer is a polymer lithium secondary battery using the attention to a part of the lithium ion secondary battery and a battery there. 【0003】つぎに前記リチウムイオン電池を例として説明する。 [0003] Next will be described the lithium ion battery as an example. 従来より、負極、セパレータおよび正極からなる電池の構造としては、ボビン型、積層型または渦巻き型が知られているが、パソコンや携帯電話などの一般の携帯機器には高出力および高エネルギー密度化が必要であり、リチウムイオン電池では一般的に渦巻き型の電池構造が用いられる。 The prior art, a negative electrode, a structure of a battery consisting of a separator and a positive electrode, a bobbin type, although laminated or spiral type are known, generally of a portable equipment such as personal computers and mobile phones high output and high energy density is required, generally a spiral type battery structure is used in a lithium ion battery. 【0004】この渦巻き型構造の電池は、通常円筒型によく使用されるが、薄型化のためには偏平状に巻き取るか、またはプレスして平板化する必要がある。 [0004] batteries of the spiral structure is commonly used for normally cylindrical, for thinning wound into flat, or should be flattened by pressing. このとき、形状維持のためには、テープなどを巻いて固定し外装缶に封入するか、または電極を接着することで電極の形状を維持する必要がある。 In this case, for shape retention, it is necessary to maintain the shape of the electrode by bonding the or electrode enclosed like a fixed outer can by winding a tape. たとえば特開平10−30 For example, JP-A-10-30
2843号公報に後者の構造の例が記載されている。 Examples of the latter structure 2843 JP are described. 後者は頑丈な外装缶に封入しなくても形状が維持されるというメリットをもっている。 The latter has the advantage that the shape without enclosed in a sturdy outer can is maintained. 【0005】 【発明が解決しようとする課題】前記渦巻き状電池を作製する場合には、渦巻き状に巻回するための巻芯が必要であり、セパレータや電極の一部分を巻芯に挟んで作製している。 [0005] In the case of manufacturing the spiral cell The object of the invention is to solve the above-requires core for winding spirally, across a portion of the separator and the electrode core fabricated doing. たとえこの電極を接着しながら巻回する場合でも、電極の巻芯に面する部分に接着剤(または粘着性をもつ電解質)を塗布すると、巻芯に接着剤が付着して電池が巻芯から抜けなかったり、付着した接着剤が異物として電池に混入したりするため、巻芯に面する部分に接着剤を塗ることは生産上不都合である。 Even if the wound while bonding the electrodes, the adhesive portion facing the winding core of the electrode (or an electrolyte having adhesive) is applied, battery adhesive adheres to the winding core from the core It may not escape, because adhering adhesive or mixed into the battery as a foreign body, painting the adhesive to a portion facing the winding core is the production inconvenient. そこで、たとえば特開2000−77091公報では、正極、負極またはセパレータの一部で巻芯を覆ったのち、前記正極、 Therefore, for example, JP-A-2000-77091 publication, the positive electrode, after covering the core part of the negative electrode or separator, the positive electrode,
負極およびセパレータのうちの残りを接着剤で接着しながら巻き込む製法により、巻芯が汚れることを回避している。 By the method involving while bonding the remainder of the negative electrode and the separator with an adhesive, which avoids the core is soiled. また、特開2000−138076公報でもセパレータなどをコア材料として、巻芯周辺のみを覆ってから電極を巻き込み、ゲル電解質が巻芯に付着しないようにしている。 Further, as the core material and separator in JP 2000-138076 publication, rolling the electrode from covering only the peripheral core, the gel electrolyte is prevented from adhering to the core. しかし、いずれも巻回装置が複雑な構造となる。 However, both the winding device is a complicated structure. 【0006】また、平板状電池の中心部に位置する電極活物質は電極間の密着性を保つことができず、対向する正極と負極が存在しても電池として働きにくい。 [0006] The electrode active material in the center of the plate-like battery can not maintain the adhesiveness between the electrodes hardly acts as a battery even positive electrode and the negative electrode is present opposed. 【0007】本発明は、叙上の事情に鑑み、量産性を高めることができるとともに、電池の軽量化および薄型化を図ることができる平板型電池およびその製法を提供することを目的とする。 [0007] The present invention is made in view of the above circumstances, it is possible to increase the productivity, and to provide a plate battery and its preparation it is possible to reduce the weight and thickness of the battery. 【0008】 【課題を解決するための手段】請求項1の平板型電池は、電子絶縁性を有し、電解液を保持するセパレータとこのセパレータを狭持する正極と負極から構成され、該正極および負極の電極の少なくとも一方は予めセパレータと接着されており、該電極とセパレータは平板状に巻き取られるか、または楕円状に巻回されたのち、プレスして平板化される平板型電池であって、該平板型電池の中心部に位置する前記電極の端部から最初の折り曲げ部までの範囲および平板型電池の最内周の内側に接合部材が省かれていることを特徴とする。 [0008] [Means for Solving the Problems] plate battery of claim 1 has an electron insulating property, it is composed of the positive electrode and the negative electrode sandwiching the separator and the separator to hold the electrolyte solution, positive electrode and at least one of the negative electrode is adhered to the previously separator, then the electrode and the separator are wound or elliptical is wound into a flat plate, a flat plate type battery to be flattened and pressed there are, characterized in that the innermost of the inner to the joint member of the range and a plate battery from the end portion of the electrode to the first bent portion is located in the center of the plate-type cell is omitted. 【0009】なお、本明細書において、接合部材とは接着剤または粘着性の物質などを含む概念である。 [0009] In this specification, the joining member is a concept including an adhesive or sticky substance. 【0010】また、請求項2の平板型電池は、前記電池の中心部に位置する電極の端部から最初の折り曲げ部までの範囲および平板型電池の最内周の内側に活物質層が省かれている。 Further, a plate battery of claim 2, inside the active material layer of the innermost saving scope and plate battery from the end of the electrode is located in the center of the cell to the first bent portion is he. 【0011】また、請求項3の平板型電池は、前記電池の最外周の外側に活物質層が省かれている。 Further, a plate battery of claim 3, active material layers are omitted outside the outermost periphery of the battery. 【0012】また、請求項4の平板型電池は、前記電極のうち、少なくとも一方が、電池の中心部に位置する該電極の端部から最初の折り曲げ部までの長さが該電池の内周一周分の4分の1以内である。 Further, a plate battery of claim 4, of the electrode, at least one of the length from the end of the electrode located in the center of the battery until the first bent portion is electro Ikenouchi Shuichi it is within one-quarter of the circumference worth. 【0013】さらに請求項5の平板型電池の製法は、電子絶縁性を有し、電解液を保持するセパレータとこのセパレータを狭持する正極と負極から構成され、該正極および負極の電極の少なくとも一方は予めセパレータと接着されており、該電極とセパレータは平板状に巻き取られるか、または楕円状に巻回されたのち、プレスして平板化される平板型電池の製法であって、正極集電体の端部に正極集電端子を形成したのち、該正極集電端子の表面部および対向する裏面部に設ける活物質層の未塗工部を省いて正極活物質層を形成し、正極を作製する工程と、負極集電体の端部に負極集電端子を形成したのち、 Furthermore preparation of a plate battery of claim 5 has an electron insulating property, is composed of the positive electrode and the negative electrode sandwiching the separator and the separator holding an electrolytic solution, at least the positive electrode and the negative electrode one is bonded in advance separator, the electrode and the separator are then wound or elliptical is wound into a flat plate, a method of flat type battery to be flattened and pressed positive electrode After forming the positive electrode current collector terminal to the end of the current collector, a positive electrode active material layer was formed by omitting the uncoated portion of the active material layer provided on the back portion of the surface portion and the opposite of the positive electrode current collector terminal, a step of fabricating the positive electrode, after forming the negative electrode current collector terminal to the end of the anode current collector,
該負極集電端子の表面部および対向する裏面部に設ける活物質層の未塗工部を省いて負極活物質層を形成し、負極を作製する工程と、正極または負極にセパレータを接着する工程と、対向する1対の巻芯で正極または負極の表面部および対向する裏面部における活物質層の未塗工部を挟んで巻芯を一回折り曲げる工程と、巻芯に接触する表面部および対向する裏面部における活物質層の未塗工部には接合部材を塗布しないで、該接合部材を正極または負極の活物質層に塗布する工程と、前記折り曲げられた電極のあいだに他の電極を挿入したのち、電池の最外周が正極または負極となるように巻き込んでいく工程とを含んでいる。 Step provided on the back surface portion by omitting the uncoated portion of the active material layer to form the anode active material layer, for adhering a step of preparing a negative electrode, a separator to the positive electrode or negative electrode surface and an opposing negative electrode current collector terminal When a step of bending once core sandwiching the uncoated portion of the active material layer in the back surface of the surface portion and facing the positive or negative electrode in the core of a pair of opposing, surface portion in contact with the winding core and not the uncoated portions of the active material layer by coating a bonding member on the back surface portion facing, a step of applying the bonding member in the active material layer of the positive or negative electrode, other electrode between the folded electrode After inserting the, outermost periphery of the battery and a step of going to involve such a positive or negative electrode. 【0014】請求項6の平板型電池の製法は、電子絶縁性を有し、電解液を保持するセパレータとこのセパレータを狭持する正極と負極から構成され、該正極および負極の電極の少なくとも一方は予めセパレータと接着されており、該電極とセパレータは平板状に巻き取られるか、または楕円状に巻回されたのち、プレスして平板化される平板型電池の製法であって、正極集電体の端部に正極集電端子を形成したのち、該正極集電端子の表面部および対向する裏面部に設ける活物質層の未塗工部を省いて正極活物質層を形成し、正極を作製する工程と、負極集電体の端部に負極集電端子を形成したのち、該負極集電端子の表面端部および対向する裏面端部、ならびに負極集電体の他端の表面端部および対向する裏面端部にそれぞれ設けられる [0014] Preparation of flat plate-type cell according to claim 6 has an electron insulating property, it is composed of the positive electrode and the negative electrode sandwiching the separator and the separator holding an electrolytic solution, at least one of the positive and negative electrodes is bonded in advance separator, the electrode and the separator are then wound or elliptical is wound into a flat plate, a method of flat type battery to be flattened and pressed positive electrode After forming the positive electrode current collector terminal to the end of the collector, a positive electrode active material layer was formed by omitting the uncoated portion of the active material layer provided on the back portion of the surface portion and the opposite of the positive electrode current collector terminal, a positive electrode a step of preparing a, after forming the negative electrode current collector terminal to the end of the anode current collector, the back side end surface end and the opposite of the negative electrode current collector terminal, and the surface end of the other end of the negative electrode current collector They are respectively provided on the back end of the parts and the opposite 物質層の未塗工部を省いて負極活物質層を形成し、負極を作製する工程と、正極または負極にセパレータを接着する工程と、対向する1対の巻芯で負極集電端子の他端の表面部および対向する裏面部における活物質層の未塗工部を挟んで巻芯を一回折り曲げる工程と、巻芯に接触する表面部および対向する裏面部における活物質層の未塗工部には接合部材を塗布しないで、該接合部材を正極または負極の活物質層に塗布する工程と、前記折り曲げられた負極のあいだに正極を挿入したのち、電池の最外周が正極または負極となるように巻き込んでいく工程とを含むことを特徴とする。 Omitting the uncoated portion of the material layer to form the anode active material layer, another negative electrode and process for manufacturing the step and, a pair of opposing winding core in the negative electrode current collector terminal to bond the separator to the positive electrode or the negative electrode a step of bending once core sandwiching the uncoated portion of the active material layer in the back surface of the surface portion and the opposite end, uncoated active material layer in the back surface of the surface portion and facing in contact with the winding core without applying the bonding member to the part, a step of applying the bonding member to the positive electrode or the active material layer of the negative electrode, after inserting the positive electrode between the folded negative electrode, and outermost positive electrode or negative electrode of the battery characterized in that it comprises a go involved so that process. 【0015】また、請求項7の平板型電池の製法は、電子絶縁性を有し、電解液を保持するセパレータとこのセパレータを狭持する正極と負極から構成され、該正極および負極の電極の少なくとも一方は予めセパレータと接着されており、該電極とセパレータは平板状に巻き取られるか、または楕円状に巻回されたのち、プレスして平板化される平板型電池の製法であって、正極集電体の端部に正極集電端子を形成したのち、該正極集電端子の表面部および対向する裏面部、ならびに正極集電体の他端部に設ける活物質層の未塗工部を省いて正極活物質層を形成し、正極を作製する工程と、負極集電体の端部に負極集電端子を形成したのち、該負極集電端子の表面端部および対向する裏面端部、ならびに負極集電体の他端の表面端部および対 [0015] Preparation of flat plate-type cell according to claim 7, having an electronically insulating, consists cathode and the anode sandwiching the separator and the separator to hold the electrolyte solution, the positive electrode and the negative electrode at least one is bonded in advance separator, the electrode and the separator are then wound or elliptical is wound into a flat plate, a method of flat type battery to be flattened by pressing, After forming the positive electrode current collector terminal to the end of the cathode current collector, the rear surface portion of the surface portion and the opposite of the positive electrode current collector terminal, and the uncoated portions of the active material layer provided on the other end portion of the positive electrode current collector omitted to form a positive electrode active material layer, a step of fabricating the positive electrode, after forming the negative electrode current collector terminal to the end of the anode current collector, the back side end surface end and the opposite of the negative electrode current collector terminal , and the surface end and a pair of the other end of the anode current collector する裏面端部にそれぞれ設けられる活物質層の未塗工部を省いて負極活物質層を形成し、負極を作製する工程と、正極または負極にセパレータを接着する工程と、対向する1対の巻芯で負極集電端子の他端の表面部および対向する裏面部における活物質層の未塗工部を挟んで巻芯を一回折り曲げる工程と、巻芯に接触する表面部および対向する裏面部における活物質層の未塗工部には接合部材を塗布しないで、該接合部材を正極または負極の活物質層に塗布する工程と、前記折り曲げられた負極のあいだに正極を挿入したのち、電池の最外周が正極または負極となるように巻き込んでいく工程とを含むことを特徴とする。 To omit the uncoated portion of the active material layer respectively provided on the back end to form the anode active material layer, a step of preparing a negative electrode, a step of bonding a separator to the positive electrode or the negative electrode, a pair of opposing a step of bending once core sandwiching the uncoated portion of the active material layer in the back surface of the surface portion and the opposite other end of the negative electrode current collector terminal in the core, the back surface of the surface portion and facing in contact with the winding core without applying the bonding member to the uncoated portion of the active material layer in the section, a step of applying the bonding member to the positive electrode or the active material layer of the negative electrode, after inserting the positive electrode between the folded negative electrode, outermost periphery of the battery, characterized in that it comprises a step of going to involve such a positive or negative electrode. 【0016】また、請求項8の平板型電池の製法は、前記正極および負極を作製する工程において、前記電池の中心部に位置する電極の端部から最初の折り曲げ部までの範囲および平板型電池の最内周の内側となる部分には活物質層を省く工程を含んでいる。 Further, preparation of the flat-type cell according to claim 8, wherein in the step of preparing the positive electrode and the negative electrode, the scope and plate battery from the end of the electrode is located in the center of the cell to the first bent portion it includes the step of omitting the active material layer in the innermost inner become part of. 【0017】また、請求項9の平板型電池の製法は、前記正極または負極を作製する工程において、前記電池の最外層となる電極の最外周の外側には活物質層を省く工程を含んでいる。 [0017] Preparation of flat plate-type cell according to claim 9, wherein in the step of producing a positive or negative electrode, outside the outermost periphery of the outermost layer and comprising electrodes of said battery includes the step of omitting the active material layer there. 【0018】また、請求項10の平板型電池の製法は、 [0018] Preparation of flat plate-type cell according to claim 10,
前記巻芯を一回折り曲げる工程において、前記電極のうち少なくとも一方が、電池の中心部に位置する電極の端部から最初の折り曲げ部までの長さが該電池の内周一周分の4分の1以内にする工程を含んでいる。 In the folding process once the winding core, at least one of the electrodes, from the end of the electrode in the heart up to the first folding portion length of 4 minutes of electric Ikenouchi circumferential one round of cell it includes the step of one within. 【0019】 【発明の実施の形態】以下、添付図面に基づいて本発明の実施の形態を説明する。 DETAILED DESCRIPTION OF THE INVENTION Hereinafter, the embodiments of the present invention will be described with reference to the accompanying drawings. 図1は本発明の実施の形態1 Figure 1 is a first embodiment of the present invention
にかかわる電池の正極の展開図、図2は図1のX−X線断面図、図3は図1の正極を裏側から見た図を示す。 Developed view of a positive electrode of the battery according to FIG 2 is sectional view taken along line X-X of FIG. 1, FIG. 3 shows a view of the positive electrode of FIG. 1 from the back side. 図4は電池の負極の展開図、図5は図4のY−Y線断面図、図6は図4の負極を裏側から見た図を示す。 Figure 4 is a developed view of a negative electrode of the battery, FIG. 5 is a line Y-Y cross-sectional view of FIG. 4, FIG. 6 shows a view of the anode of Figure 4 from the back side. 図1〜 Figure 1
6において、1は正極集電端子、2は正極集電体、3は正極活物質層、4は負極集電端子、5は負極集電体、6 In 6, 1 the positive electrode current collector terminal, 2 is a cathode current collector, 3 positive electrode active material layer, the negative electrode current collector terminal 4, 5 negative electrode current collector, 6
は負極活物質層、7はたとえば高分子多孔膜からなるセパレータ、8は保護テープである。 The negative electrode active material layer, for example a separator made of porous polymer film 7, 8 is a protecting tape. 【0020】まず各構成要素について説明する。 [0020] First, a description of each component. 正極集電端子1にはアルミニウム板が好ましく用いられる。 The positive electrode current collector terminal 1 is an aluminum plate is preferably used. 正極集電体2にはアルミニウム集電体を用いるのが好ましく、集電体の形状としては、箔、網状またはエクスパンドメタルなどいずれのものでも使用することができる。 Preferably to use aluminum current collector to the cathode current collector 2, the shape of the current collector can be used those of one foil, such as mesh or expanded metal.
正極活物質層3には、たとえばコバルト、マンガンまたはニッケルなどの遷移金属の酸化物、カルコゲン化合物もしくはこれらの複合化合物またはこれらに各種の添加元素を含有するものが限定されることなく使用可能であり、これに導電助剤としての炭素質材料と結着剤とを混合させた混合物が用いられる。 The positive electrode active material layer 3, for example, cobalt, oxides of transition metals such as manganese or nickel, may be used without chalcogen compound or complex compound thereof or those containing them in various additive elements is limited the mixture obtained by mixing the carbonaceous material and a binder as a conductive auxiliary agent is used to this. 結着剤としては、ポリフッ化ビニリデン(以下、単にPVdFという)の単独重合体または共重合体などが好ましく用いられるが、PV As the binder, polyvinylidene fluoride (hereinafter, simply referred to as PVdF), but such a homopolymer or copolymer of are preferably used, PV
dFに限らず、メタクリル酸、アクリル酸系のモノマーや、アルキレンオキサイド、アクリロニトリル、エチレン、スチレン、ビニルアルコール、ビニルピロリドンまたはビニルブチラートなどの高分子でもよい。 Not limited to dF, methacrylic acid, and monomers of acrylic, alkylene oxide, acrylonitrile, ethylene, styrene, vinyl alcohol, or a polymer such as vinyl pyrrolidone or vinyl butyrate. 負極集電端子4としては、銅、ニッケルまたはタングステンなどの金属板が用いられる。 As the negative electrode current collector terminal 4, copper, a metal plate such as nickel or tungsten is used. 負極集電体5には銅が好ましく用いられる。 The negative electrode current collector 5 copper is preferably used. この負極集電体5の形状は、箔、網状またはエクスパンドメタルなどいずれのものでも使用することができる。 The shape of the negative electrode current collector 5 can also be used those of one foil, such as mesh or expanded metal. 負極活物質層6には炭素材料が好ましく用いられ、結着剤としては、正極活物質層3と同様の結着剤を使用することができる。 Carbon material is used preferably for the negative electrode active material layer 6, as the binder, it is possible to use the same binder as the cathode active material layer 3. 正極集電端子1および負極集電端子4は活物質が塗布されていない集電体部分から取り出されているものでもよい。 Positive electrode current collector terminal 1 and the negative electrode current collector terminal 4 may be one which has been removed from the collector portion where the active material is not coated. 【0021】つぎに電極構造を説明する。 [0021] Next, the electrode structure will be described. 図1〜3および図7に示す正極において、正極が巻芯9と接触する部分には正極活物質層3を形成していない。 In the positive electrode shown in FIGS. 1-3 and 7, the portion where the positive electrode is in contact with the winding core 9 do not form a positive electrode active material layer 3. また、電池を形成した場合に対向する負極活物質層6が存在しない部分にも正極活物質層3を形成していない。 Also, it does not form a positive electrode active material layer 3 in a portion where the negative electrode active material layer 6 facing the case of forming a battery is not present. ここで、活物質層の未塗工部Aは、巻芯9に面するとともに、対向する負極活物質層6が存在しないために正極活物質層3を形成していない。 Here, the uncoated portions A of the active material layer, with facing the winding core 9, do not form a positive electrode active material layer 3 in the negative electrode active material layer 6 is not present opposite. 未塗工部Bは、対向する負極活物質層6が存在しないために正極活物質層3を形成していない。 Uncoated portion B does not form the active material layer 3 in the negative electrode active material layer 6 facing is not present. 図4〜6に示す負極における未塗工部C、D、Eについても同様に、未塗工部CおよびDは、巻芯9に面するとともに、対向する正極活物質層3が存在しないために負極活物質6を形成していない。 Similarly, the uncoated portions C, D, E in the anode shown in Figures 4-6, the uncoated portions C and D, together with the facing core 9, because the positive electrode active material layer 3 facing absent do not form a negative electrode active material 6 in. 未塗工部Eは渦巻き状電池にした場合に電池の最外面となるため、対向する正極活物質層3が存在しないために負極活物質6を形成していない。 For uncoated portion E is to be the outermost surface of the battery when the spiral battery, do not form a negative electrode active material 6 to the positive electrode active material layer 3 facing absent. 本実施の形態におけるリチウムイオン電池では、正極活物質層3が必ず負極活物質層6と対向するように形成されているため、正極を負極より小さいサイズに形成している。 The lithium ion battery of the present embodiment, since the positive electrode active material layer 3 is formed so as to face always the negative electrode active material layer 6 to form a positive electrode to a smaller size than the negative electrode. また、本実施の形態では、図5に示されるように予め負極の両面にセパレータ7を接着している。 Further, in this embodiment, it is bonded to the separator 7 on both sides of the previously negative electrode as shown in FIG. 【0022】つぎに渦巻状電池の構造を説明する。 [0022] will be explained the structure of the spiral-shaped battery. 図7 Figure 7
〜8は前記作製した正極と負極を巻き込んで形成した電池の断面図である。 8 is a sectional view of a cell formed by involving positive electrode and the negative electrode mentioned above produced. 図7において、9は巻芯であり、1 7, 9 is a core, 1
0は接合部材である接着剤である。 0 is an adhesive as the bonding member. この電池の形成手順は、まず、対向する1対の巻芯9で予めセパレータを貼り付けた負極の未塗工部CおよびDを巻芯9の端部から巻芯幅の半分以下の長さに挟んで巻芯9のまわりに一回折り曲げる。 The formation procedure of this battery, first, less than half the length of the core width from an end portion of the core 9 uncoated portion C and D of the negative electrode was put previously bonding the separator core 9 of a pair of opposed folded once across in around the winding core 9. ついで図7に示すように、接着剤10を正極活物質層3に塗布した正極を負極のあいだに挿入して、巻き込んでいく。 Next, as shown in FIG. 7, the positive electrode coated with the adhesive 10 in the positive electrode active material layer 3 is inserted into between the negative electrode, we involving. このとき、巻芯9に接触する未塗工部Aには接着剤を塗布しない。 At this time, not applying the adhesive to the uncoated portion A in contact with the core 9. 負極の最外周の外側には未塗工部Eが配置されている。 The outside of the outermost periphery of the negative electrode are disposed Minuriko section E. つぎに巻芯9を抜き取ったのち、プレスして密着させ、図8に示すような渦巻き状電池を得る。 Then After withdrawn core 9 is brought into close contact and pressed to obtain a spiral battery as shown in FIG. ただし、図7のように正極活物質層3 However, the positive electrode active material layer 3 as shown in FIG. 7
の表面には接着剤10が塗布され、また図5のように負極集電体5の表面と負極活物質層6の表面にはセパレータ7が接着されているが、図8では接着剤の層およびセパレータは図の簡略化のため、接着剤10は正極活物質層3に含ませるとともに、セパレータ7は負極集電体5 On the surface of the adhesive 10 is applied, Although the separator 7 on the surface of the surface and the negative electrode active material layer 6 of the anode current collector 5 as in FIG. 5 is bonded, the layer of adhesive 8 and separators for simplification of the drawing, the adhesive 10 causes contained in the positive electrode active material layer 3, the separator 7 is a negative electrode current collector 5
および負極活物質層6に含ませて記載している。 And it is described by contained in the anode active material layer 6. 図8の渦巻き状電池は中心部にセパレータ付きの負極集電体5、すなわち負極を連続して2層有し、負極の先端から半周遅れた位置に正極集電体2の先端が位置し、この外周に正極集電体2とセパレータ付きの負極集電体5、すなわち正極と負極がセパレータを介して順次巻き込まれている構造となっている。 Spiral battery of FIG 8 the negative electrode current collector 5 with a separator in the center, i.e. has two layers continuously negative, and positions the tip of the cathode current collector 2 at a position delayed half from the tip of the negative electrode, positive electrode current collector 2 and the negative electrode current collector 5 with a separator, namely a positive electrode and the negative electrode has a structure that sequentially caught through a separator to the outer circumference. 【0023】本実施の形態によれば、セパレータ付き負極を巻芯9で挟み一回折り曲げられたのちに、巻芯9に接触する部分に接着剤10を塗布していない正極の部分が挿入されて巻き込まれた構造にされているので、接着剤10の塗布面が巻芯9に触れない。 According to the present embodiment, after being bent once sandwiching a separator with the anode in the core 9, the portion of the positive electrode which is not adhesive 10 is applied is inserted into the portion which contacts the winding core 9 because it is the entrained structure Te, coated surface of the adhesive 10 does not touch the core 9. このため、巻芯9 For this reason, the core 9
に接着剤10が付着する心配がなく、接着剤10が他の部分に付着したり、固まった接着剤が電池内部に混入して電極間に内部空間が生じたり、セパレータ7を貫通して電極が短絡するなどの不都合を防止することができるとともに、信頼性の高い電池を生産性よく得ることができる。 Adhesive 10 is not concerned about adhering, or the adhesive 10 adheres to other portions, or cause the internal space between the solidified adhesive is mixed into the battery electrodes, through the separator 7 electrodes There it is possible to prevent inconveniences such as a short circuit, can be obtained with good productivity a highly reliable battery. 【0024】本実施の形態では、図7のように1対の巻芯9で挟む電極の長さを巻芯の半分以下の長さにして、 [0024] In this embodiment, by the length of the electrodes sandwiching a pair of core 9 as shown in FIG. 7 to less than half the length of the winding core,
正極および負極それぞれの最内周の折り曲げ部から端部までの正極と負極が重ならないようにした。 Positive and negative electrodes from the innermost of the bent portion of each positive electrode and the negative electrode to the edge is not overlap. これは巻芯を拭き取ったのち、プレスして平板型電池にすると、電池の最内周に位置する負極または正極の端部から最初の折り曲げ部までの長さが、平板型電池の内周一周分の4 After this wiping the core, when the plate battery was pressed, the length from the end portion of the negative electrode or the positive electrode positioned at the innermost circumference of the battery until the first bent portion is, the inner peripheral circumference of the plate battery minute 4
分の1以内の長さとなる。 Minute a length of less than 1. これにより、従来例と比べ、 Thus, as compared with the conventional example,
巻芯の挟みしろが少なくなるため電池の重量が軽くなり、エネルギー密度を向上させることができる。 Weight batteries for sandwiching the core white is reduced becomes lighter, thereby improving the energy density. 【0025】また、本実施の形態では、対向する正極がなく電池反応が期待できない電極(本実施の形態では負極)の巻芯9に面する未塗工部A、Bや電極(本実施の形態では負極)の最外周の外側は、活物質層を形成しないことで体積エネルギー密度を向上させることができる。 Further, in this embodiment, can not be expected cell reaction without opposing positive electrode uncoated portion A facing the winding core 9 (negative in this embodiment), B and electrodes (of this embodiment in the form outside the outermost periphery of the negative electrode) can be improved volume energy density by not forming an active material layer. 【0026】また、本実施の形態では、正極および負極のいずれか一方(本実施の形態では負極)にセパレータ7を予め接着しておくことにより巻き込みの作業性を向上させることができる。 Further, in the present embodiment, (in this embodiment the anode) either one of the positive electrode and the negative electrode can improve the workability of winding by previously bonding the separator 7. 【0027】なお、本実施の形態では、負極にセパレータ7を予め接着し、負極を巻芯9で挟んで、正極を巻き込む例を説明したが、本発明においては、セパレータ7 [0027] In this embodiment, the separator 7 in advance bonded to the negative electrode, sandwiching the negative electrode core 9, an example has been described involving a positive electrode, in the present invention, a separator 7
を予め正極に接着して、正極を巻芯9で挟んで、負極に接着剤10を塗布しながら2つの電極を巻き取ることもできる。 Adhered to advance the positive pole, across the positive electrode in core 9, the adhesive 10 can take up the two electrodes while applying a negative electrode. 【0028】つぎに前記電池の構造を形成するための具体例を実施例に基づいて説明するが、本発明はかかる実施例に限定されるものではない。 [0028] will be described based on a concrete example for forming the structure of the battery to Examples, but the present invention is not limited to these examples. 【0029】実施例1 まず正極の作製手順を説明する。 [0029] The fabrication procedure of Example 1 is first positive electrode will be described. LiCoO 2からなる正極活物質を91重量部、導電剤としての人造黒鉛を6 91 parts by weight of positive electrode active material composed of LiCoO 2, the artificial graphite as a conductive agent 6
重量部および結着剤としてのPVdFを3重量部をN− 3 parts by weight of PVdF as parts by weight and a binder N-
メチルピロリドン(以下、NMPと略す)に分散させることにより、正極活物質ペーストを調整する。 Methylpyrrolidone (hereinafter abbreviated as NMP) by dispersing, for adjusting the positive electrode active material paste. ついでこの正極活物質ペーストを、正極集電体となる厚さ20μ Then thickness 20μ that the positive electrode active material paste, the positive electrode current collector
mのAl箔上に塗工し、正極活物質膜を形成したのち、 Was coated on Al foil m, after forming the cathode active material film,
乾燥させた。 And dried. さらに裏面にも正極活物質ペーストを塗工したのち、乾燥させ、Al箔の両面に正極活物質層を形成した。 After addition was applied also positive electrode active material paste on the back surface and dried to form a positive electrode active material layer on both surfaces of an Al foil. このとき、図1〜図3に示されるAおよびBの範囲には正極活物質層の未塗工部を作製した。 At this time, to prepare a non-coated portion of the positive electrode active material layer in the range of A and B shown in FIGS. 未塗工部Aの幅は63mmおよび未塗工部Bの幅は13mmとした。 The width of uncoated portion A width of 63mm and Minuriko portion B was set to 13 mm. Al箔の両面に正極活物質層を成形したのち、プレスして厚さ160μmの正極を作製した。 After forming the positive electrode active material layer on both surfaces of an Al foil to prepare a positive electrode having a thickness of 160μm and pressed. 作製した正極を、電極寸法46mm×280mmに切断し、正極活物質層の未塗工部Aの端部にはリードとして、厚さ0.1 The prepared positive electrode was cut to electrode size 46 mm × 280 mm, as read at the end of the uncoated portion A of the positive electrode active material layer, thickness 0.1
mmおよび幅3mmのAl集電端子を溶接して、その上から保護テープを貼り、図1〜図3に示すような正極を作製した。 By welding Al current collector terminal of mm and width 3 mm, attached to the protective tape thereon, a positive electrode was prepared as shown in FIGS. 【0030】ついで負極の作製手順を説明する。 [0030] then explained the procedure for manufacturing a negative electrode. メソフェーズカーボンマイクロビーズからなる負極活物質を9 The negative electrode active material composed of mesophase carbon microbeads 9
0重量部とPVdFを10重量部をNMPに分散させることにより、調整した負極活物質ペーストを、負極集電体となる厚さ10μmのCu箔上に塗工したのち、負極活物質膜を形成し、乾燥させた。 By the 0 parts by weight of PVdF dispersed 10 parts by weight in NMP, After coating the negative electrode active material paste was adjusted, on the Cu foil having a thickness of 10μm as a negative electrode current collector, a negative electrode active material layer formed , and dried. さらに裏面にも負極活物質ペーストを塗工したのち、乾燥させ、銅箔の両面に負極活物質層を形成した。 After further coating the negative electrode active material paste on the back surface and dried to form an anode active material layer on both surfaces of the copper foil. このとき図4〜図6に示されるC、D、Eの範囲には負極活物質層の未塗工部を作製した。 C shown in FIGS. 4 to 6 at this time, D, in the range of E to prepare a non-coated portion of the negative electrode active material layer. 未塗工部CおよびDの幅は35mm、Eの幅は6 The width of uncoated portion C and D 35 mm, width of E 6
0mmとした。 It was 0mm. 銅箔の両面に負極活物質層を成形したのち、プレスして厚さ160μmの負極を作製した。 After forming the anode active material layer on both surfaces of a copper foil, a negative electrode was fabricated having a thickness of 160μm and pressed. 作製した負極を、電極寸法48mm×317mmに切断し、 A negative electrode produced was cut to the electrode dimensions 48 mm × 317 mm,
負極活物質層の未塗工部Cの端部にはリードとして、厚さ0.1mm、幅3mmのニッケル集電端子を溶接して、その上から保護テープを貼り、図4〜6に示すような負極を作製した。 At the end of the uncoated portion C of the negative electrode active material layer as a lead, thickness 0.1 mm, by welding a nickel current collector terminal width 3 mm, attached to the protective tape thereon, shown in FIGS. 4-6 the negative electrode as prepared. 片面部の負極活物質膜の厚さは75 The thickness of the negative electrode active material layer one surface portion 75
μmとした。 It was μm. 未塗工部CおよびDは、図7の巻芯9とほぼ同じ幅で、未塗工部Eは巻き終えた電池の最外周の長さである。 Uncoated portion C and D, in approximately the same width as the core 9 of Fig. 7, uncoated portion E is the length of the outermost periphery of the battery has finished winding. なお、未塗工部C、D、Eは形成しなくてもよいが、電極活物質の有効利用のため形成したほうが望ましい。 Incidentally, the uncoated portions C, D, although E may not be formed, better formed due to the effective utilization of the electrode active material is desired. また、集電端子はニッケルに限らず銅などの導電性金属で作製することもできる。 Further, the current collector terminal may also be made of a conductive metal such as copper is not limited to nickel. 【0031】ついでセパレータ付負極の作製手順を説明する。 [0031] then explained the negative pole of the manufacturing procedure with the separator. セパレータとして厚さ20μm、幅48mmの多孔性ポリエチレンシートを使用し、2枚のセパレータの片面ずつに接着剤を塗布した。 Thickness 20μm as a separator, using a porous polyethylene sheet having a width 48 mm, an adhesive is applied by one side of two separators in. 接着剤としてはPVdF As the adhesive PVdF
を溶解させ、酸化アルミニウム粉末を分散させたNMP Dissolved, dispersed aluminum oxide powder NMP
溶液を用いた。 The solution was used. この接着剤による接着層は電解液を注液した場合に電解液を保持し、イオン伝導性を有する。 Adhesive layer formed by the adhesive of the electrolyte solution holding when injected an electrolytic solution has an ionic conductivity. そののち、接着剤が乾燥する前に前記作製した負極の両面に密着させ、貼り合わせたのち、乾燥することにより図5に示すようなセパレータ付負極を作製した。 After that, it brought into close contact with both surfaces of the negative electrode described above produced before the adhesive dries, after bonding, to produce a separator with the anode as shown in FIG. 5 by drying. 【0032】なお、ここでは電極を切断してからセパレータを接着しているが、セパレータを電極に接着してから切断してもよい。 [0032] Here, although by bonding the separator after cutting the electrode may be cut after bonding the separator to the electrodes. 【0033】前記接着剤は、PVdFに限らず、たとえばポリビニルアルコールやポリビニルブチラート、ポリメタクリル酸メチルまたはポリエチレンオキサイド化合物などの高分子でもよい。 [0033] The adhesive is not limited to PVdF, for example polyvinyl alcohol or polyvinyl butyrate, or a polymer such as polymethyl methacrylate or polyethylene oxide compound. 【0034】また、前記酸化アルミニウム粉末は、接着層が多孔体になりやすいように添加しており、微粉末であれば、酸化アルミニウム粉末に代えて黒鉛またはシリカなどを添加することができる。 Further, the aluminum oxide powder, the adhesive layer is added as prone to the porous body, if the fine powder can be added such as graphite or silica instead of the aluminum oxide powder. しかし、必ずしも添加しなくてもよい。 However, it is not necessarily added. また、接着剤に予め、電解質塩を加えることもできる。 Further, in advance in the adhesive, it may be added to the electrolyte salt. この電解質塩として、LiPF 6 、L As the electrolyte salt, LiPF 6, L
iClO 4 、LiBF 4 、LiCF 3 SO 3 、LiN(CF iClO 4, LiBF 4, LiCF 3 SO 3, LiN (CF
3 SO 22またはLiN(C 25 SO 22などを使用することができる。 3 SO 2) 2 or LiN (C 2 F 5 SO 2 ) 2 and the like can be used. 【0035】また、前記溶剤もNMPに限らずジメチルホルムアミド(以下、DMFという)などを用いることができるが、接着剤がポリエチレンオキサイド系化合物の場合には、溶剤としてはアセトニトリルなどを用いることもできる。 [0035] The solvent is not limited to NMP dimethylformamide (hereinafter, referred to as DMF) and the like can be used, if the adhesive is a polyethylene oxide-based compounds may also be used such as acetonitrile as solvent . 【0036】つぎに渦巻き状電池の作製手順を説明する。 [0036] Next will be described a procedure for manufacturing a spiral battery. 前記手順により作製したセパレータ付負極の活物質層の未塗工部CおよびDのうち、先端から7mmを図7 Of uncoated portion C and D of the active material layer of the produced negative electrode with a separator by the procedure, Figure 7 a 7mm from the front end
に示されるように対向する2枚の巻芯9で挟み、巻芯9 Sandwiched between two core 9 that faces as shown in, the core 9
を半回転させて負極を固定する。 The by a half turn to secure the negative electrode. ここで、巻芯9としては、幅24mm、厚さ1mmの巻芯を使用した。 Here, the core 9, using core width 24 mm, thickness 1 mm. 接着剤として、PVdFを溶解させ、酸化アルミニウムを分散させたDMF溶液を用いた。 As an adhesive, dissolve the PVdF, using a DMF solution containing dispersed aluminum oxide. この接着剤による接着層は、電解液を注液した場合に電解液を保持し、イオン伝導性を有する。 Adhesive layer by the adhesive, an electrolytic solution is held when injected an electrolytic solution has an ionic conductivity. この接着剤を図1〜図3に示す正極の活物質層の未塗工部AおよびBの部分以外の両面に塗布して、巻芯9に巻き付けた負極のあいだに挿入して、接着剤を塗布した正極を巻き込みながら楕円状に巻き、巻き終わりをテープで止めた。 The adhesive is applied to both sides other than a portion of the uncoated portion A and B of the positive electrode active material layer shown in FIGS. 1 to 3, is inserted into between the anode wound on the core 9, the adhesive around the oval shape while winding the coated positive electrode, and to stop the winding end with tape. 負極のあいだに挿入してから、最初に折り曲げるまでの部分は、正極の活物質層の未塗工部AおよびBの先端から7mmとした。 After inserting the between the negative electrode portion up initially bent were from the tip of the uncoated portion A and B of the positive electrode active material layer and 7 mm. ここで、 here,
図1〜3の正極の活物質層の未塗工部AおよびBの部分には接着剤は塗布せず、巻芯に接着剤が付着することを防いでいる。 The adhesive without applying the uncoated portions of the A and B of the positive electrode active material layer in FIGS. 1-3, the adhesive is prevented from adhering to the core. つぎに、巻芯を抜き取り、接着剤が乾燥する前に、所定の圧力でプレスすることで仮成形する。 Then, pull the core, before the adhesive dries, the preliminarily molded by pressing at a predetermined pressure. そののち、真空乾燥を行なって、図8に示されるように接着した平板状の渦巻き状電池を作製した。 Thereafter, by performing vacuum drying, to produce an adhesive tabular spiral battery as shown in FIG. ただし、活物質層の未塗工部Aには巻芯に対面しない部分が存在するので、その対面しない部分には接着剤を塗布してもかまわない。 However, since the uncoated portion A of the active material layer there is a portion not facing the winding core, it is also possible to apply an adhesive to the portion which is not the face. 【0037】このように電極やセパレータの巻芯に接触する部分には接着剤を塗布しないことにより、接着剤塗布面が巻芯に触れないようにすることで量産性が向上する。 [0037] By thus not coated with the adhesive in a portion in contact with the core of the electrode and the separator, thereby improving the mass productivity by making them adhesive coated surface does not touch the core. また、接着剤を塗布しない部分に活物質層を省くとともに、巻芯の挟みしろの部分を少なくすることで、エネルギー密度を向上させることができる。 Further, with omitting an active material layer on a portion not coated with the adhesive, by reducing the nip margin portions of the core, thereby improving the energy density. 実施例1の場合、平板状渦巻き電池の内周は52mmとなり、正極および負極ともに電極端部から最初の折り曲げ部までの長さは7mmであり、電池内周の1/4以内であるため、 For Example 1, since the inner periphery of the flat spiral cell length of next 52 mm, the electrode end to the positive electrode and the negative electrode both to the first bent portion is 7 mm, it is within 1/4 the circumference of the battery,
正極と負極の折り曲げ部が重ならず、電池厚みの増加を防いでいる。 Do not overlap bent portion of the positive electrode and the negative electrode, thereby preventing an increase in battery thickness. 【0038】比較例1 つぎに本発明の比較例1として、前もって正極または負極にセパレータを接着させないとともに、正極および負極の接着剤塗布面が巻芯に向く場合の例を示す。 [0038] Comparative Example 1 Comparative Example 1 then the present invention, together with not to adhere the separator previously positive or negative electrode, an example in which the adhesive coated surface of the positive electrode and the negative electrode facing the winding core. 正極の断面図を図9に示すとともに、負極の断面図を図10に示す。 The cross-sectional view of a positive electrode with 9, is shown in FIG. 10 is a sectional view of a negative electrode. 正極および負極は実施例1と同様に作製した。 Positive and negative electrodes were prepared in the same manner as in Example 1. また、電池の充放電容量が実施例1と同じになるようにして正極および負極の作製を行なった。 Further, charge and discharge capacity of the battery was used to produce the positive electrode and the negative electrode so as to be the same as in Example 1. 正極の電極寸法は46mm×252mmであり、未塗工部AおよびBの幅は7mmとした。 Electrode size of the positive electrode is 46 mm × 252 mm, the width of uncoated portion A and B was 7 mm. 同様に負極の寸法は電極寸法48mm Similarly the dimensions of the negative electrode dimensions 48mm
×316mmであり、未塗工部CおよびDの幅は7m × a 316 mm, the width of uncoated portion C and D 7m
m、未塗工部Eの幅は60mmとした。 m, the width of uncoated portion E was 60 mm. セパレータは実施例1と同様のものを用いた。 Separator used was the same as in Example 1. 【0039】図11に図9および図10に示した正極をおよび負極を用いて作製したときの平板状渦巻き電池の要部断面図を示す。 The cross sectional view showing a principal part of the flat spiral battery when produced using the positive electrode shown in FIGS. 9 and 10 in FIG. 11 and the negative electrode. 巻芯9としては、幅24mmおよび厚さ1mmの巻芯を使用した。 The core 9 was used core width 24mm and thickness 1 mm. 図11に示されるように、前記セパレータ7を巻芯9に挟んで、左右から接着剤10を塗布した負極および正極を巻芯9とセパレータ7とのあいだに挿入して、接着剤10を塗布した正極および負極を巻き込みながら楕円状に巻き、そして巻き終わりをテープで止めた。 As shown in FIG. 11, sandwiching the separator 7 in the core 9, a negative electrode and the positive electrode where the adhesive 10 is applied from the left and right are inserted into between the core 9 and the separator 7, an adhesive 10 is applied wound elliptically while winding the positive electrode and the negative electrode was, and the winding end was taped. ここで、正極の活物質層3の未塗工部AおよびBの先端から、最初に折り曲げるまでの部分は24mmとした。 Here, the portion from the tip of the uncoated portion A and B of the active material layer 3 of the positive electrode, until the first bend was 24 mm. ついで巻芯を抜き取り、接着剤が乾燥する前に、所定の圧力でプレスして仮成形を行なった。 Then withdrawn winding core, before the adhesive has dried, subjected to preformed and pressed under a predetermined pressure. そののち、真空乾燥を行なって接着平板状渦巻き電池を作製した。 After that, to produce an adhesive flat spiral battery by performing vacuum drying. 【0040】実施例1および比較例1で作製した接着平板状渦巻き電池を100個ずつ作製したときの不良率の比較を表1に示す。 [0040] The comparison of the defect rate when to produce an adhesive flat spiral cell fabricated in Example 1 and Comparative Example 1 each 100 shown in Table 1. 実施例1の電池は良品が100% The battery of Example 1 has good 100%
(100個)であったが、比較例1で作製した電池は、 Although a was the (100), the battery fabricated in Comparative Example 1,
巻芯の抜き取りミス21個、異物(接着剤のかたまり) Withdrawal miss 21 of the winding core, foreign matter (mass of the adhesive)
の混入5個、巻ずれ8個のような結果となり、実施例1 Five mixed, becomes winding deviation eight such results, Example 1
の方が生産性に優れ、かつ量産性に優れていることがわかる。 We can be seen that the direction of is superior to excellent in productivity, and mass production. 【0041】 【表1】 [0041] [Table 1] 【0042】実施例2 つぎに負極のみ巻き込まれる中心部の折り曲げ部の長さが平板電池の内周一周分の4分の1以内にした場合の例を実施例2に示す。 [0042] An example of a case where the length of the bent portion of Example 2 then the negative electrode only caught center is within one-quarter inner circumference of one round of the flat battery in Example 2. 正極の断面図を図12に示すとともに、負極の断面図を図13に示す。 The cross-sectional view of a positive electrode with 12, shows a cross-sectional view of a negative electrode in FIG. 13. 正極および負極の作製は前記実施例1と同様に作製した。 Preparation of the positive electrode and the negative electrode were prepared in the same manner as in Example 1. また、電池の充放電容量が実施例1と同じになるようにして正極および負極の作製を行なった。 Further, charge and discharge capacity of the battery was used to produce the positive electrode and the negative electrode so as to be the same as in Example 1. 正極の電極寸法は46mm×26 Electrode size of the positive electrode 46 mm × 26
6mmであり、未塗工部Aの幅は56mmおよび未塗工部Bの幅は7mmとした。 It is 6 mm, the width of uncoated portion A width of 56mm and Minuriko portion B was set to 7 mm. 同様に負極の寸法は48mm Similarly, the size of the negative electrode is 48mm
×323mmであり、未塗工部CおよびDの幅は41m × a 323mm, the width of uncoated portion C and D 41m
mおよび未塗工部Eの幅は60mmとした。 The width of m and Minuriko part E was 60 mm. また、予め負極には実施例1と同様にしてセパレータ7を貼り付けた。 Also, paste the separator 7 in the same manner as in Example 1 in advance the negative electrode. 【0043】図14に図12および図13に示した正極をおよび負極を用いて作製したときの平板状渦巻き電池の要部断面図を示す。 The cross sectional view showing a principal part of the flat spiral battery when produced using the positive electrode shown in FIGS. 12 and 13 in FIG. 14 and the negative electrode. 巻芯としては、幅24mmおよび厚さ1mmの巻芯を使用した。 The core was used core width 24mm and thickness 1 mm. 前記セパレータ付負極の活物質層の未塗工部CおよびDのうち先端から7mmを対向する2枚の巻芯で挟み、巻芯を1回転させて負極を固定する。 The sandwiched between two core facing the 7mm from the tip of the uncoated portion C and D of the negative electrode active material layer with the separator, to fix the negative electrode of the winding core is rotated once. 実施例1と同様の接着剤を図12の活物質層の未塗工部AおよびB以外の両面に塗布して、巻芯に巻き付けた負極のあいだに挿入し、接着剤を塗布した正極を巻き込みながら楕円状に巻き、そして巻き終わりをテープで止めた。 It was applied to both sides other than uncoated portion A and B of the active material layer of Figure 12 the same adhesive as in Example 1, was inserted into between the negative electrode wound around the winding core, the positive electrode coated with adhesive around the oval shape while winding, and the winding end was taped. ここで、負極のあいだに挿入してから最初に折り曲げるまでの部分は、正極の活物質層の未塗工部AおよびBの先端から24mmとした。 Here, a portion from and inserted into between the anode until the first bend was from the tip of the uncoated portion A and B of the positive electrode active material layer and 24 mm. 実施例1と同様に巻芯を抜き取り、接着剤が乾燥する前に、所定の圧力でプレスした。 Similarly withdrawn winding core as in Example 1, before the adhesive has dried, and pressed with a predetermined pressure. そののち、真空乾燥を行なって接着平板状渦巻き電池を作製した。 After that, to produce an adhesive flat spiral battery by performing vacuum drying. 【0044】実施例3 つぎに電池の最外周が正極となり、正極活物質が必ず負極活物質と対向するような電池を作製するために、図1 The outermost periphery of Example 3 then the battery is a positive electrode, to prepare a battery as a cathode active material faces always a negative electrode active material, FIG. 1
7に示されるような平板状渦巻き電池を作製した。 To prepare a flat spiral battery as shown in 7. 正極および負極の中心部の折り曲げ部の長さが平板電池の内周一周分の4分の1以内にした場合の例を実施例3に示す。 An example of a case where the length of the bent portion of the center portion of the positive electrode and the negative electrode was 1 within a quarter of the inner circumference one round of the flat battery in Example 3. 正極の断面図を図15に示すとともに、負極の断面図を図16に示す。 The cross-sectional view of a positive electrode with FIG. 15 shows a cross-sectional view of a negative electrode in FIG. 16. 正極および負極の作製は実施例1と同様に作製した。 Preparation of the positive electrode and the negative electrode were prepared in the same manner as in Example 1. また、電池の充放電容量が実施例1と同じになるようにして正極および負極の作製を行なった。 Further, charge and discharge capacity of the battery was used to produce the positive electrode and the negative electrode so as to be the same as in Example 1. 正極の電極寸法は46mm×313mmであり、未塗工部AおよびBの幅は41mmとし、未塗工部Cの幅は60mmとした。 Electrode size of the positive electrode is 46 mm × 313 mm, the width of uncoated portion A and B is set to 41mm, the width of uncoated portion C was 60 mm. 同様に負極の寸法は48mm×29 Similarly the dimensions of the negative electrode is 48 mm × 29
0mmであり、未塗工部Dの幅は13mmおよび未塗工部Eの幅は63mmとした。 Is 0 mm, the width of uncoated portion D is the width of 13mm and Minuriko portion E was 63 mm. また、予め負極には実施例1と同様にしてセパレータ7を貼り付けた。 Also, paste the separator 7 in the same manner as in Example 1 in advance the negative electrode. 【0045】図17に図15および図16に示した正極および負極を用いて作製したときの平板状渦巻き電池の要部断面図を示す。 The cross sectional view showing a principal part of the flat spiral battery when produced using the positive electrode and the negative electrode shown in FIGS. 15 and 16 in FIG. 17. 巻芯としては、幅24mmおよび厚さ1mmの巻芯を使用した。 The core was used core width 24mm and thickness 1 mm. 前記セパレータ付負極の活物質層の未塗工部DおよびEのうち、先端から7mmを対向する2枚の巻芯で挟み、巻芯を半回転させて負極を固定する。 Of uncoated portion D and E of the active material layer of the negative electrode with the separator was sandwiched between two sheets of the core that faces the 7mm from the front end, a winding core by a half turn to secure the negative electrode. 実施例1と同様の接着剤を図16の正極活物質層の未塗工部A、B、C以外の両面に塗布して、巻芯に巻き付けた負極のあいだに挿入し、接着剤を塗布した正極を巻き込みながら楕円状に巻き、そして巻き終わりをテープで止めた。 By applying the same adhesive as in Example 1 uncoated portion A of the positive electrode active material layer of FIG. 16, B, on both sides other than C, and inserted into between the negative electrode wound around the winding core, applying an adhesive It was while winding the positive electrode wound in an elliptical shape, and the winding end was taped. ここで、負極のあいだに挿入してから最初に折り曲げるまでの部分は、正極の活物質層の未塗工部AおよびBの先端から7mmとした。 Here, a portion from and inserted into between the anode until the first bend was from the tip of the uncoated portion A and B of the positive electrode active material layer and 7 mm. 実施例1と同様に巻芯を抜き取り、接着剤が乾燥する前に、所定の圧力でプレスした。 Similarly withdrawn winding core as in Example 1, before the adhesive has dried, and pressed with a predetermined pressure. そののち、真空乾燥を行なって接着平板状渦巻き電池を作製した。 After that, to produce an adhesive flat spiral battery by performing vacuum drying. 【0046】実施例4 電池の最外周が正極となり、集電端子が電池の外側に配置されるように、図20のような平板状渦巻き電池を作製した。 The outermost periphery of Example 4 cell is a positive electrode, as current collector terminal is located outside the cell, to produce a flat spiral battery as shown in FIG. 20. 正極の断面図を図18に示すとともに、負極の断面図を図19に示す。 The cross-sectional view of a positive electrode with FIG. 18 shows a cross-sectional view of a negative electrode in FIG. 19. 正極および負極は実施例1と同様に作製した。 Positive and negative electrodes were prepared in the same manner as in Example 1. また、電池の充放電容量が実施例1と同じになるようにして正極および負極の作製を行なった。 Further, charge and discharge capacity of the battery was used to produce the positive electrode and the negative electrode so as to be the same as in Example 1.
正極の電極寸法は46mm×285mmであり、未塗工部Aの幅は70mmおよび未塗工部Bの幅は10mmとした。 Electrode size of the positive electrode is 46 mm × 285 mm, the width of uncoated portion A is the width of 70mm and Minuriko portion B was set to 10 mm. 同様に負極の電極寸法は48mm×325mmであり、未塗工部CおよびDの幅は35mm、未塗工部E Electrode size of the negative electrode similarly is 48 mm × 325 mm, the width of uncoated portion C and D 35 mm, uncoated portions E
の幅は10mmおよび未塗工部Fの幅は60mmとした。 The width width of 10mm and Minuriko portion F was 60 mm. また、予め負極には実施例1と同様にしてセパレータ7を貼り付けた。 Also, paste the separator 7 in the same manner as in Example 1 in advance the negative electrode. 【0047】図20に図18および図19に示した正極をおよび負極を用いて作製したときの平板状渦巻き電池の要部断面図を示す。 The cross sectional view showing a principal part of the flat spiral battery when produced using the positive electrode a and the negative electrode shown in FIGS. 18 and 19 in FIG. 20. 巻芯としては、幅24mmおよび厚さ1mmの巻芯を使用した。 The core was used core width 24mm and thickness 1 mm. 前記セパレータ付負極の活物質層の未塗工部EおよびFのうち、先端から7mm Of uncoated portion E and F of the active material layer of the negative electrode with the separator, 7 mm from the tip
を対向する2枚の巻芯で挟み、巻芯を半回転させて負極を固定する。 Sandwiched between two core facing and the core by a half turn to secure the negative electrode. 実施例1と同様の接着剤を図18の正極の未塗工部AおよびBの部分以外の両面に塗布して、巻芯に巻き付けた負極のあいだに挿入し、接着剤を塗布した正極を巻き込みながら楕円状に巻き、そして巻き終わりをテープで止めた。 Similar adhesive as in Example 1 was applied to both sides the positive electrode of the other parts of the uncoated portions A and B of Figure 18, inserted in between the negative electrode wound around the winding core, the positive electrode coated with adhesive around the oval shape while winding, and the winding end was taped. ここで、負極のあいだに挿入してから最初に折り曲げるまでの部分は、正極の活物質層の先端から21mmとした。 Here, a portion from and inserted into between the anode until the first bend was set to 21mm from the tip of the positive electrode active material layer. 実施例1と同様に巻芯を抜き取り、接着剤が乾燥する前に、所定の圧力でプレスした。 Similarly withdrawn winding core as in Example 1, before the adhesive has dried, and pressed with a predetermined pressure.
そののち、真空乾燥を行なって接着平板状渦巻き電池を作製した。 After that, to produce an adhesive flat spiral battery by performing vacuum drying. 【0048】実施例5 つぎに電池の最外周が負極となり、集電端子が電池の外側に配置されるように、図23のような平板状渦巻き電池を作製した。 The outermost periphery of Example 5 then the battery is a negative electrode, as current collector terminal is located outside the cell, to produce a flat spiral battery as shown in FIG. 23. 正極の断面図を図21に示すとともに、 The cross-sectional view of a positive electrode with 21,
負極の断面図を図22に示す。 The cross-sectional view of a negative electrode shown in FIG. 22. 正極および負極は実施例1と同様に作製した。 Positive and negative electrodes were prepared in the same manner as in Example 1. また、電池の充放電容量が実施例1と同じになるようにして正極および負極の作製を行なった。 Further, charge and discharge capacity of the battery was used to produce the positive electrode and the negative electrode so as to be the same as in Example 1. 正極の電極寸法は46mm×287mmであり、 Electrode size of the positive electrode is 46mm × 287mm,
未塗工部AおよびBの幅は17mm、未塗工部Cの幅は50mmとした。 The width of uncoated portion A and B is 17 mm, the width of uncoated portion C was 50 mm. 同様に負極の電極寸法は48mm×3 Electrode size of the negative electrode in the same manner is 48 mm × 3
27mmであり、未塗工部Dの幅は30mm、未塗工部Eの幅は90mm、未塗工部FおよびGの幅は12mm Is 27 mm, the width of uncoated portion D is 30 mm, the width of uncoated portion E is 90 mm, the width of uncoated portion F and G 12mm
とした。 And the. また、予め負極には実施例1と同様にしてセパレータ7を貼り付けた。 Also, paste the separator 7 in the same manner as in Example 1 in advance the negative electrode. 【0049】図23に図21および図22に示した正極をおよび負極を用いて作製したときの平板状渦巻き電池の要部断面図を示す。 The cross sectional view showing a principal part of the flat spiral battery when produced using the positive electrode a and the negative electrode shown in FIGS. 23 to 21 and 22. 巻芯としては、幅24mmおよび厚さ1mmの巻芯を使用した。 The core was used core width 24mm and thickness 1 mm. 前記セパレータ付負極の活物質層の未塗工部FおよびGのうち先端から10mm 10mm from the tip of the uncoated portion F and G of the negative electrode active material layer with the separator
を対向する2枚の巻芯で挟み、巻芯を半回転させて負極を固定する。 Sandwiched between two core facing and the core by a half turn to secure the negative electrode. 実施例1と同様の接着剤を図21の正極の未塗工部A、BおよびCの部分以外の両面に塗布して、 Uncoated portion A of the positive electrode of FIG 21 The same adhesive as in Example 1, was applied to both surfaces of the other portions B and C,
巻芯に巻き付けた負極のあいだに挿入し、接着剤を塗布した正極を巻き込みながら楕円状に巻き、そして巻き終わりをテープで止めた。 And inserted into between the negative electrode wound around the winding core, winding elliptical while winding the positive electrode coated with adhesive, and the winding end was taped. ここで、負極のあいだに挿入してから最初に折り曲げるまでの部分は、正極活物質層の未塗工部Cの先端から24mmとした。 Here, the portion up to the first to bend after insertion into between the negative electrode was set to 24mm from the tip of the uncoated portion C of the positive electrode active material layer. 実施例1と同様に巻芯を抜き取り、接着剤が乾燥する前に、所定の圧力でプレスした。 Similarly withdrawn winding core as in Example 1, before the adhesive has dried, and pressed with a predetermined pressure. そののち、真空乾燥を行なって接着平板状渦巻き電池を作製した。 After that, to produce an adhesive flat spiral battery by performing vacuum drying. 【0050】比較例2 つぎに本発明の比較例2として、図26に示されるように巻芯9の幅に相当する長さの負極を1対の巻芯9で挟む場合の正極の断面図を図24に示すとともに、負極の断面図を図25に示す。 [0050] Comparative Example 2 Comparative Example 2 Next present invention, cross-sectional view of a positive electrode in the case of sandwiching with the core 9 of a pair of negative pole of a length corresponding to the width of the core 9 as shown in FIG. 26 together with FIG. 24, FIG. 25 is a sectional view of a negative electrode. 正極および負極は実施例1と同様に作製した。 Positive and negative electrodes were prepared in the same manner as in Example 1. また、電池の充放電容量が実施例1と同じになるようにして正極および負極の作製を行なった。 Further, charge and discharge capacity of the battery was used to produce the positive electrode and the negative electrode so as to be the same as in Example 1.
正極の電極寸法は46mm×297mmであり、未塗工部Aの幅は80mmおよび未塗工部Bの幅は30mmとした。 Electrode size of the positive electrode is 46 mm × 297 mm, the width of uncoated portion A is the width of 80mm and Minuriko portion B was set to 30 mm. 同様に負極の電極寸法は48mm×334mmであり、未塗工部CおよびDの幅は35mm、未塗工部E Electrode size of the negative electrode similarly is 48 mm × 334 mm, the width of uncoated portion C and D 35 mm, uncoated portions E
の幅は60mmとした。 Is the width is 60mm. また、予め負極には実施例1と同様にしてセパレータ7を貼り付けた。 Also, paste the separator 7 in the same manner as in Example 1 in advance the negative electrode. 【0051】図27に図24および図25に示した正極をおよび負極を用いて作製したときの平板状渦巻き電池の要部断面図を示す。 [0051] a cross sectional view showing a principal part of the flat spiral battery when produced using the positive electrode a and the negative electrode shown in FIGS. 24 and 25 in FIG. 27. 巻芯9としては、幅24mmおよび厚さ1mmの巻芯を使用した。 The core 9 was used core width 24mm and thickness 1 mm. 図26に示されるように、前記セパレータ付負極の活物質層の未塗工部CおよびDのうち、先端から24mmを対向する2枚の巻芯で挟み、巻芯を半回転させて負極を固定する。 As shown in FIG. 26, of the uncoated portion C and D of the active material layer of the negative electrode with the separator was sandwiched between two sheets of the core that faces the 24mm from the tip, the negative electrode of the winding core by half turn fixed. 実施例1と同様の接着剤を図24の正極の未塗工部AおよびBの部分以外の両面に塗布して、巻芯に巻き付けた負極のあいだに挿入したのち、接着剤を塗布した正極を巻き込みながら楕円状に巻き、そして巻き終わりをテープで止めた。 Similar adhesive as in Example 1 was applied to both sides the positive electrode of the other parts of the uncoated portions A and B in FIG. 24, after insertion into between the negative electrode wound around the winding core, and applying an adhesive cathode the winding into an elliptical shape while winding, and the winding end was taped. ここで、正極の活物質層の未塗工部AおよびBの先端から、最初に折り曲げるまでの部分は24mmとした。 Here, the portion from the tip of the uncoated portion A and B of the positive electrode active material layer, until the first bend was 24 mm. つぎに巻芯を抜き取り、接着剤が乾燥する前に、所定の圧力でプレスすることで仮成形する。 Next withdrawn core, before the adhesive has dried and preliminarily molded by pressing at a predetermined pressure. そののち、真空乾燥を行なって図27に示されるような接着平板状渦巻き電池を作製した。 After that, to produce an adhesive flat spiral battery as shown in FIG. 27 by performing vacuum drying. 比較例2の場合、平板状渦巻き電池の内周は52mmとなり、正極および負極ともに電極端部から最初の折り曲げ部までの長さは24mmであり、電池内周の1/4以上であるため、折り曲げ部どうしが重なり、実施例1と比較して電池の厚みが増加している。 In Comparative Example 2, since the inner periphery of the flat spiral cell length of next 52 mm, the electrode end to the positive electrode and the negative electrode both to the first bent portion is 24 mm, is less than 1/4 the circumference of the battery, bent portions each other overlap, has been an increase in the thickness of the battery as compared with example 1. 【0052】比較例3 つぎに本発明の比較例3として、図30に示されるように巻芯9の幅に相当する長さの負極を1対の巻芯9で挟み、巻芯9の周りに活物質層を形成した例を示す。 [0052] Comparative Example 3 Comparative Example 3 then present invention, sandwiched between the core 9 of a pair of negative pole of a length corresponding to the width of the core 9 as shown in FIG. 30, around the winding core 9 It shows an example of forming an active material layer on. 正極の断面図を図28に示すとともに、負極の断面図を図2 The cross-sectional view of a positive electrode with FIG. 28, FIG. 2 is a sectional view of a negative electrode
9に示す。 It is shown in 9. 正極および負極は実施例1と同様に作製した。 Positive and negative electrodes were prepared in the same manner as in Example 1. また、電池の充放電容量が実施例1と同じになるようにして正極および負極の作製を行なった。 Further, charge and discharge capacity of the battery was used to produce the positive electrode and the negative electrode so as to be the same as in Example 1. 正極の電極寸法は46mm×252mmであり、未塗工部AおよびBの幅は7mmとした。 Electrode size of the positive electrode is 46 mm × 252 mm, the width of uncoated portion A and B was 7 mm. 同様に負極の電極寸法は48m Likewise electrode size of the negative electrode is 48m
m×340mmであり、未塗工部CおよびDの幅は30 m × a 340 mm, the width of the uncoated portions C and D 30
mm、未塗工部Eの幅は60mmとした。 mm, the width of the uncoated portion E was set to 60mm. また、予め負極には実施例1と同様にしてセパレータ7を貼り付けた。 Also, paste the separator 7 in the same manner as in Example 1 in advance the negative electrode. 【0053】図31に図28および図29に示した正極をおよび負極を用いて作製したときの平板状渦巻き電池の要部断面図を示す。 [0053] a cross sectional view showing a principal part of the flat spiral battery when produced using the positive electrode a and the negative electrode shown in FIGS. 28 and 29 in FIG. 31. 巻芯9としては、幅24mmおよび厚さ1mmの巻芯を使用した。 The core 9 was used core width 24mm and thickness 1 mm. 前記セパレータ付負極の活物質層の未塗工部CおよびDのうち、先端から24 Of uncoated portion C and D of the negative electrode active material layer with the separator, 24 from the distal end
mmを対向する2枚の巻芯で挟み、巻芯を半回転させて負極を固定する。 Sandwiched between two core facing the mm, to fix the negative electrode core by half turn. 実施例1と同様の接着剤を図28に示す正極の未塗工部AおよびB以外の両面に塗布して、巻芯に巻き付けた負極のあいだに挿入したのち、接着剤を塗布した正極を巻き込みながら楕円状に巻き、そして巻き終わりをテープで止めた。 Similar adhesive as in Example 1 was applied to both sides other than uncoated portion A and B of the positive electrode shown in FIG. 28, after insertion into between the negative electrode wound around the winding core, the positive electrode coated with adhesive around the oval shape while winding, and the winding end was taped. ここで、負極のあいだに挿入してから最初に折り曲げるまでの部分は、正極の先端から24mmとした。 Here, the portion up to the first to bend after insertion into between the negative electrode, and from the tip of the cathode and 24 mm. 実施例1と同様に巻芯を抜き取り、接着剤が乾燥する前に、所定の圧力でプレスした。 Similarly withdrawn winding core as in Example 1, before the adhesive has dried, and pressed with a predetermined pressure.
そののち、真空乾燥を行なって接着平板状渦巻き電池を作製した。 After that, to produce an adhesive flat spiral battery by performing vacuum drying. 【0054】これまでの実施例1〜5および比較例2〜 [0054] Previous Examples 1 to 5 and Comparative Example 2
3で作製した接着平板状渦巻き電池の厚さおよび重量を比較すると、表2のようになる。 Comparing the thickness and weight of the adhesive flat spiral batteries fabricated in 3, as shown in Table 2. 実施例1と比較例2、 Example 1 and Comparative Example 2,
3を比較すると、2枚の巻芯で挟んだ負極の長さの差および、それに合わせて延長し正極箔および保護テープの長さの差だけ、実施例1の方が薄く、軽くなる。 When 3 Compare the difference in length of the negative electrode sandwiched between two sheets of the core and, by the difference in length of the extended positive electrode foil and the protective tape accordingly, thinner towards the Example 1, it becomes light. たとえば実施例1の方が比較例2よりも0.2gの軽量化されている。 For example towards Example 1 is lighter 0.2g than Comparative Example 2. また、電池の厚さも実施例1の方が比較例2に比べて約80μm薄くできるため、エネルギー密度も向上する。 Moreover, since approximately 80μm can be reduced as compared with the comparative example 2 towards even EXAMPLE thickness 1 of the battery is also improved energy density. また、この効果は電池内周が大きいほど、効果も大きくなる。 Moreover, this effect is greater the battery inner, effect also increases. 【0055】 【表2】 [0055] [Table 2] 【0056】実施例2〜5の構造をもつ平板状渦巻き電池も、実施例1と同様に1対の巻芯で挟む電極の長さを電池の内周の4分の1以下としたことで、電池を薄型化および軽量化させることができた。 [0056] Also tabular spiral battery having the structure of Examples 2-5, by the length of the electrodes sandwiched by the core similarly pair as in Example 1 was less than 1 inner circumference of a quarter of a battery , it was able to be thinner and lighter battery. 【0057】 【発明の効果】以上のように、請求項1記載の発明によれば、電子絶縁性を有し、電解液を保持するセパレータとこのセパレータを狭持する正極と負極から構成され、 [0057] As is evident from the foregoing description, according to the first aspect of the invention, an electron-insulating properties, is composed of a positive electrode and a negative electrode that sandwich the separator and the separator holding an electrolytic solution,
該正極および負極の電極の少なくとも一方は予めセパレータと接着されており、該電極とセパレータは平板状に巻き取られるか、または楕円状に巻回されたのち、プレスして平板化される平板型電池であって、該平板型電池の中心部に位置する前記電極の端部から最初の折り曲げ部までの範囲および平板型電池の最内周の内側に接合部材が省かれているので、量産性を高めることができる。 At least one of the positive electrode and the negative electrode of the electrode is bonded in advance separator, or the electrode and the separator are wound into a flat plate, or after being wound elliptically, plate type is flattened by pressing a battery, since the innermost inside joint member ranges and a plate battery from the end portion of the electrode to the first bent portion is located in the center of the plate-type cell is omitted, productivity it can be increased. 【0058】また、請求項2の発明のよれば、前記電池の中心部に位置する電極の端部から最初の折り曲げ部までの範囲および平板型電池の最内周の内側に活物質層が省かれており、請求項3の発明によれば、前記電池の最外周の外側に活物質層が省かれており、請求項4の発明のよれば、前記電極のうち、少なくとも一方が、電池の中心部に位置する該電極の端部から最初の折り曲げ部までの長さが該電池の内周一周分の4分の1以内であるので、量産性を損なわずに電池の軽量化および薄型化を図ることができる。 [0058] According the invention of claim 2, innermost inside the active material layer saving scope and plate battery from the end of the electrode is located in the center of the cell to the first bent portion and he, according to the invention of claim 3, wherein which the active material layer is omitted outside the outermost periphery of the battery, according the invention of claim 4, among the electrodes, at least one of, battery the length from the end to the beginning of the bent portion the electrode in the center portion is within a quarter of the power Ikenouchi circumferential one round, weight and thickness of the battery without losing productivity it can be achieved. また、エネルギー密度を向上させることもできる。 It is also possible to improve the energy density. 【0059】また、請求項5の発明によれば、正極集電体に正極集電端子を形成した表面端部および対向する裏面端部に活物質層の未塗工部を省いて正極活物質層を形成し、正極を作製する工程と、負極集電体に負極集電端子を形成した表面端部および対向する裏面端部に活物質層の未塗工部を省いて負極活物質層を形成し、負極を作製する工程と、正極または負極にセパレータを接着する工程と、1対の巻芯を配置する工程と、該対向する1対の巻芯で正極または負極の表面および対向する裏面における活物質層の未塗工部を挟んで巻芯を一回折り曲げる工程と、巻芯に接触する表面および対向する裏面における活物質層の未塗工部には接合部材を塗布しないで、該接合部材を正極または負極の活物質層に塗布する工程と、前記折り曲げら Further, according to the invention of claim 5, the positive electrode active material by omitting the uncoated portion of the active material layer on the back end surface end and opposing the formation of the positive electrode current collector terminal to the cathode current collector to form a layer, and a step of producing a positive electrode, a negative electrode active material layer by omitting the uncoated portion of the active material layer on the back end surface end and opposing the formation of the negative electrode current collector terminal to the negative electrode current collector formed, a process of forming a negative electrode, a step of bonding a separator to the positive electrode or the negative electrode, a step of arranging a core pair, the back surface of the surface and opposing positive or negative electrode in the core of a pair of the opposed a step of bending once core sandwiching the uncoated portion of the active material layer in, the uncoated portion of the active material layer on the back surface to the surface and facing in contact with the winding core without applying the bonding member, the a step of applying the bonding member in the active material layer of the positive or negative electrode, the bending et al た電極のあいだに他の電極を挿入したのち、電池の最外周が正極または負極となるように巻き込んでいく工程とを含んでいるので、量産性を高めることができる。 After inserting the other electrode during the electrode, since the outermost periphery of the battery and a step of going to involve such a positive or negative electrode, it is possible to improve the mass productivity. 【0060】また、請求項6の発明によれば、正極集電体の端部に正極集電端子を形成したのち、該正極集電端子の表面部および対向する裏面部に設ける活物質層の未塗工部を省いて正極活物質層を形成し、正極を作製する工程と、負極集電体の端部に負極集電端子を形成したのち、該負極集電端子の表面端部および対向する裏面端部、ならびに負極集電体の他端の表面端部および対向する裏面端部にそれぞれ設けられる活物質層の未塗工部を省いて負極活物質層を形成し、負極を作製する工程と、 [0060] According to the invention of claim 6, after forming the positive electrode current collector terminal to the end of the cathode current collector, the active material layer provided on the back portion of the surface portion and the opposite of the positive electrode current collector terminal omitting the uncoated portion to form a positive electrode active material layer, a step of fabricating the positive electrode, after forming the negative electrode current collector terminal to the end of the anode current collector, the surface end portions of the negative electrode current collector terminal and the counter to the rear surface end, and to form the anode active material layer by omitting the uncoated portion of the active material layer respectively provided on the back end surface end and opposing the other end of the negative electrode current collector, to prepare a negative electrode and a step,
正極または負極にセパレータを接着する工程と、対向する1対の巻芯で負極の他端の表面部および対向する裏面部における活物質層の未塗工部を挟んで巻芯を一回折り曲げる工程と、巻芯に接触する表面部および対向する裏面部における活物質層の未塗工部には接合部材を塗布しないで、該接合部材を正極または負極の活物質層に塗布する工程と、前記折り曲げられた負極のあいだに正極を挿入したのち、電池の最外周が正極または負極となるように巻き込んでいく工程とを含んでいるので、量産性を高めることができる。 Step and a step of bending once core sandwiching the uncoated portion of the active material layer in the back surface of the surface portion of the negative electrode at the other end and opposite in winding core of a pair of opposing to bond the separator to the positive electrode or the negative electrode If, without applying the bonding member to the uncoated portion of the active material layer in the back surface of the surface portion and facing in contact with the core, a step of applying the bonding member in the active material layer of the positive or negative electrode, wherein After inserting the positive electrode between the folded negative electrode, since the outermost periphery of the battery and a step of going to involve such a positive or negative electrode, it is possible to improve the mass productivity. 【0061】また、請求項7の発明によれば、正極集電体の端部に正極集電端子を形成したのち、該正極集電端子の表面部および対向する裏面部、ならびに正極集電体の他端部に設ける活物質層の未塗工部を省いて正極活物質層を形成し、正極を作製する工程と、負極集電体の端部に負極集電端子を形成したのち、該負極集電端子の表面端部および対向する裏面端部、ならびに負極集電体の他端の表面端部および対向する裏面端部にそれぞれ設けられる活物質層の未塗工部を省いて負極活物質層を形成し、負極を作製する工程と、正極または負極にセパレータを接着する工程と、対向する1対の巻芯で負極の他端の表面部および対向する裏面部における活物質層の未塗工部を挟んで巻芯を一回折り曲げる工程と、巻芯に接触する表面部および [0061] According to the invention of claim 7, after forming the positive electrode current collector terminal to the end of the cathode current collector, the rear surface portion of the surface portion and the opposite of the positive electrode current collector terminal, and the cathode current collector of omitting the uncoated portion of the active material layer provided on the other end to form a positive electrode active material layer, a step of fabricating the positive electrode, after forming the negative electrode current collector terminal to the end of the anode current collector, the anode active omitted uncoated portion of the negative electrode current collector surface end and opposing back side end portion of the terminal, and respectively on the back end portion is provided is the active material layer to the surface end and opposite end of the anode current collector forming a material layer, a step of preparing a negative electrode, non of the positive electrode or the negative electrode and bonding a separator, an active material layer in the back surface of the surface portion and facing the negative electrode at the other end in a pair of opposing winding core a step of bending once winding core across the coated portion, the surface portion in contact with the winding core and 向する裏面部における活物質層の未塗工部には接合部材を塗布しないで、該接合部材を正極または負極の活物質層に塗布する工程と、前記折り曲げられた負極のあいだに正極を挿入したのち、電池の最外周が正極または負極となるように巻き込んでいく工程とを含んでいるので、量産性を高めることができる。 Without applying the bonding member to the uncoated portion of the active material layer in the back surface of countercurrent inserted, a step of applying the bonding member in the active material layer of the positive or negative electrode, a positive electrode between the folded negative electrode After the so outermost cells and a step of going to involve such a positive or negative electrode, it is possible to improve the mass productivity. 【0062】また、請求項8の発明によれば、前記正極および負極を作製する工程において、前記電池の中心部に位置する電極の端部から最初の折り曲げ部までの範囲および平板型電池の最内周の内側となる部分には活物質層を省く工程を含んおり、請求項9の発明によれば、前記正極または負極を作製する工程において、前記電池の最外層となる電極の最外周の外側には活物質層を省く工程を含んでおり、請求項10の発明によれば、前記巻芯を一回折り曲げる工程において、前記電極のうち、少なくとも一方が、電池の中心部に位置する電極の端部から最初の折り曲げ部までの長さが該電池の内周一周分の4 [0062] According to the invention of claim 8, wherein in the step of preparing the positive electrode and the negative electrode, the range and a plate battery from the end of the electrode is located in the center of the cell to the first bent portion outermost Fukun'ori a process to eliminate the active material layer on the inner side and become part of the inner periphery, according to the invention of claim 9, in the step of preparing the positive electrode or negative electrode, the outermost electrode is the top layer of the cell the outer includes a step of omitting the active material layer, according to the invention of claim 10, in the step of bending once the winding core, of the electrode, at least one is located in the center of the cell electrode 4 from the edge length of up to the first bending portion of the electric Ikenouchi circumferential one round
分の1以内にする工程を含んでいるので、量産性を損なわずに電池の軽量化および薄型化を図ることができる。 Since minute includes the step of one within, it is possible to reduce the weight and thickness of batteries without impairing the productivity.
また、エネルギー密度を向上させることもできる。 It is also possible to improve the energy density.

【図面の簡単な説明】 【図1】 本発明の実施の形態1にかかわる電池の正極の展開図である。 BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a development view of a positive electrode of the battery according to a first embodiment of the present invention. 【図2】 図1のX−X線断面図である。 2 is a sectional view taken along line X-X of FIG. 【図3】 図1の正極を裏側から見た図を示す。 3 shows a view of the positive electrode of FIG. 1 from the back side. 【図4】 本発明の実施の形態1にかかわる電池の正極の展開図である。 It is a developed view of a positive electrode of the battery according to the first embodiment of the present invention; FIG. 【図5】 図4のY−Y線断面図である。 5 is a line Y-Y cross-sectional view of FIG. 【図6】 図4の負極を裏側から見た図を示す。 Figure 6 shows a view of the anode of Figure 4 from the back side. 【図7】 本発明の実施の形態1にかかわる電池の作製手順を説明する断面図である。 7 is a sectional view for explaining a procedure for manufacturing a battery according to a first embodiment of the present invention. 【図8】 本発明の実施の形態1にかかわる電池の構造を説明する断面図である。 8 is a sectional view illustrating a structure of a battery according to a first embodiment of the present invention. 【図9】 従来の渦巻き状電池の一構造における正極の断面図である【図10】 従来の渦巻き状電池の一構造における負極の断面図である【図11】 従来の渦巻き状電池の作製手順を説明する断面図である。 9 is a cross-sectional view of a negative electrode in one structure of a conventional cross-sectional views of a positive electrode in one structure of the spiral battery [10] Conventional spiral battery 11 manufacturing procedure of a conventional spiral battery is a cross-sectional view illustrating a. 【図12】 本発明の実施の形態2にかかわる電池の正極の断面図である。 12 is a cross-sectional view of a positive electrode of the battery according to the second embodiment of the present invention. 【図13】 本発明の実施の形態2にかかわる電池の負極の断面図である。 13 is a cross-sectional view of a negative electrode of the battery according to the second embodiment of the present invention. 【図14】 本発明の実施の形態2にかかわる電池の構造を説明する断面図である。 14 is a cross-sectional view illustrating a structure of a battery according to a second embodiment of the present invention. 【図15】 本発明の実施の形態3にかかわる電池の正極の断面図である。 15 is a sectional view of a positive electrode of the battery according to the third embodiment of the present invention. 【図16】 本発明の実施の形態3にかかわる電池の負極の断面図である。 16 is a sectional view of a negative electrode of the battery according to the third embodiment of the present invention. 【図17】 本発明の実施の形態3にかかわる電池の構造を説明する断面図である。 17 is a sectional view illustrating a structure of a battery according to a third embodiment of the present invention. 【図18】 本発明の実施の形態4にかかわる電池の正極の断面図である。 18 is a cross-sectional view of a positive electrode of the battery according to a fourth embodiment of the present invention. 【図19】 本発明の実施の形態4にかかわる電池の負極の断面図である。 19 is a cross-sectional view of a negative electrode of the battery according to a fourth embodiment of the present invention. 【図20】 本発明の実施の形態4にかかわる電池の構造を説明する断面図である。 20 is a cross-sectional view illustrating a structure of a battery according to a fourth embodiment of the present invention. 【図21】 本発明の実施の形態5にかかわる電池の正極の断面図である。 21 is a cross-sectional view of a positive electrode of the battery according to a fifth embodiment of the present invention. 【図22】 本発明の実施の形態5にかかわる電池の負極の断面図である。 22 is a cross-sectional view of a negative electrode of the battery according to a fifth embodiment of the present invention. 【図23】 本発明の実施の形態5にかかわる電池の構造を説明する断面図である。 23 is a cross-sectional view illustrating a structure of a battery according to a fifth embodiment of the present invention. 【図24】 従来の渦巻き状電池の他の構造における正極の断面図である。 24 is a cross-sectional view of a positive electrode in the other structure of a conventional spiral battery. 【図25】 従来の渦巻き状電池の他の構造における負極の断面図である。 25 is a cross-sectional view of a negative electrode in the other structure of a conventional spiral battery. 【図26】 従来の他の渦巻き状電池の作製手順を説明する断面図である。 26 is a cross-sectional view illustrating a manufacturing procedure of another conventional spiral battery. 【図27】 従来の渦巻き状電池の他の構造を説明する断面図である。 27 is a cross-sectional view illustrating another structure of a conventional spiral battery. 【図28】 従来の渦巻き状電池のさらに他の構造における正極の断面図である。 28 is a sectional view of a positive electrode in still another structure of a conventional spiral battery. 【図29】 従来の渦巻き状電池のさらに他の構造における負極の断面図である。 29 is a cross-sectional view of a negative electrode in still another structure of a conventional spiral battery. 【図30】 従来のさらに他の渦巻き状電池の作製手順を説明する断面図である。 Figure 30 is a cross-sectional view illustrating a manufacturing procedure of a conventional still another spiral battery. 【図31】 従来の渦巻き状電池のさらに他の構造を説明する断面図である【符号の説明】 1 正極集電端子、2 正極集電体、3 正極活物質層、4 負極集電端子、5 負極集電体、6 負極活物質層、7 セパレータ、8 保護テープ、9 巻芯、1 31 is a cross-sectional view explaining another structure of a conventional spiral battery [EXPLANATION OF SYMBOLS] 1 positive electrode current collector terminal, 2 a positive electrode current collector, 3 positive electrode active material layer, 4 a negative electrode current collector terminal, 5 the anode current collector, 6 negative electrode active material layer, 7 separator 8 protective tape, 9 core, 1
0 接着剤、A、B、C、D、E、F、G 活物質層の未塗工部。 0 adhesive, A, B, C, D, E, F, uncoated portion of the G active material layer.

───────────────────────────────────────────────────── フロントページの続き (72)発明者 西村 隆 東京都千代田区丸の内二丁目2番3号 三 菱電機株式会社内(72)発明者 荒金 淳 東京都千代田区丸の内二丁目2番3号 三 菱電機株式会社内Fターム(参考) 5H028 AA05 BB04 BB07 CC02 CC11 HH05 5H029 AJ03 AJ14 AK02 AK03 AK05 AL06 BJ12 CJ03 CJ06 CJ07 DJ04 EJ12 HJ03 5H050 AA08 AA19 BA00 CA02 CA07 CA11 CB07 DA19 EA23 FA02 FA05 GA03 GA08 GA09 HA03 ────────────────────────────────────────────────── ─── of the front page continued (72) inventor Takashi Nishimura, Chiyoda-ku, tokyo Marunouchi 2-chome No. 2 No. 3 Mitsubishi electric in Co., Ltd. (72) inventor Aragane Atsushi, Chiyoda-ku, tokyo Marunouchi 2-chome No. 2 No. 3 three Mitsubishi electric Co., Ltd. in the F-term (reference) 5H028 AA05 BB04 BB07 CC02 CC11 HH05 5H029 AJ03 AJ14 AK02 AK03 AK05 AL06 BJ12 CJ03 CJ06 CJ07 DJ04 EJ12 HJ03 5H050 AA08 AA19 BA00 CA02 CA07 CA11 CB07 DA19 EA23 FA02 FA05 GA03 GA08 GA09 HA03

Claims (1)

  1. 【特許請求の範囲】 【請求項1】 電子絶縁性を有し、電解液を保持するセパレータとこのセパレータを狭持する正極と負極から構成され、該正極および負極の電極の少なくとも一方は予めセパレータと接着されており、該電極とセパレータは平板状に巻き取られるか、または楕円状に巻回されたのち、プレスして平板化される平板型電池であって、該平板型電池の中心部に位置する前記電極の端部から最初の折り曲げ部までの範囲および平板型電池の最内周の内側に接合部材が省かれている平板型電池。 Has a [Claims 1] electronically insulating, consists cathode and the anode sandwiching the separator and the separator holding an electrolytic solution, at least one of pre-separator of the positive electrode and the negative electrode of the electrode are bonded with either the electrode and the separator are wound into a flat plate, or after being wound elliptically, a plate battery which is flattened by pressing the center of the plate-type battery plate battery of the innermost inside joint member is omitted in the scope and a plate battery from the end portion of the electrode to the first bent portion located. 【請求項2】 前記電池の中心部に位置する電極の端部から最初の折り曲げ部までの範囲および平板型電池の最内周の内側に活物質層が省かれている請求項1記載の平板型電池。 2. A flat plate of the active material layer is omitted on the inside of the innermost circumference is claim 1, wherein the range and a plate battery from the end of the electrode is located in the center of the cell to the first bent portion type battery. 【請求項3】 前記電池の最外周の外側に活物質層が省かれている請求項1記載の平板型電池。 3. A plate battery of claim 1, wherein the active material layer is omitted outside the outermost periphery of the battery. 【請求項4】 前記電極のうち、少なくとも一方が、電池の中心部に位置する該電極の端部から最初の折り曲げ部までの長さが該電池の内周一周分の4分の1以内である請求項1記載の平板型電池。 Wherein one of the electrodes, at least one of, within one length from the end of the electrode to the first bent portion is electric Ikenouchi circumferential one round 4 minutes in the center of the cell plate battery of a claim 1, wherein. 【請求項5】 電子絶縁性を有し、電解液を保持するセパレータとこのセパレータを狭持する正極と負極から構成され、該正極および負極の電極の少なくとも一方は予めセパレータと接着されており、該電極とセパレータは平板状に巻き取られるか、または楕円状に巻回されたのち、プレスして平板化される平板型電池の製法であって、正極集電体の端部に正極集電端子を形成したのち、 5. have electronically insulating, consists cathode and the anode sandwiching the separator and the separator holding an electrolytic solution, at least one of the positive electrode and the negative electrode of the electrode is bonded in advance separator, or the electrode and the separator are wound into a flat plate, or after being wound elliptically, a method of flat type battery to be flattened and pressed positive electrode collector to the end of the cathode current collector After forming the terminal,
    該正極集電端子の表面部および対向する裏面部に設ける活物質層の未塗工部を省いて正極活物質層を形成し、正極を作製する工程と、負極集電体の端部に負極集電端子を形成したのち、該負極集電端子の表面部および対向する裏面部に設ける活物質層の未塗工部を省いて負極活物質層を形成し、負極を作製する工程と、正極または負極にセパレータを接着する工程と、対向する1対の巻芯で正極または負極の表面部および対向する裏面部における活物質層の未塗工部を挟んで巻芯を一回折り曲げる工程と、巻芯に接触する表面部および対向する裏面部における活物質層の未塗工部には接合部材を塗布しないで、該接合部材を正極または負極の活物質層に塗布する工程と、前記折り曲げられた電極のあいだに他の電極を挿入したのち、電池の最 A step of forming a positive electrode active material layer, the cathode omitting uncoated portion of the active material layer provided on the back portion of the surface portion and the opposite of the positive electrode current collector terminal, a negative electrode to the end of the anode current collector After forming the current collector terminal, a step of omitting the uncoated portion of the active material layer provided on the back portion of the surface portion and the opposite of the negative electrode current collector terminal to form the anode active material layer, to prepare a negative electrode, a positive electrode or a step of bonding the separator to the negative electrode, a step of bending once core sandwiching the uncoated portion of the active material layer in the back surface of the surface portion and facing the positive or negative electrode in the core of a pair of opposed, without applying the bonding member to the uncoated portion of the active material layer in the back surface of the surface portion and facing in contact with the core, a step of applying the bonding member in the active material layer of the positive or negative electrode, is the bent After inserting the other electrode during the electrode, most of the battery 周が正極または負極となるように巻き込んでいく工程とを含む平板型電池の製法。 Circumference preparation of a plate battery and a step of going to involve such a positive or negative electrode. 【請求項6】 電子絶縁性を有し、電解液を保持するセパレータとこのセパレータを狭持する正極と負極から構成され、該正極および負極の電極の少なくとも一方は予めセパレータと接着されており、該電極とセパレータは平板状に巻き取られるか、または楕円状に巻回されたのち、プレスして平板化される平板型電池の製法であって、正極集電体の端部に正極集電端子を形成したのち、 6. have electronically insulating, consists cathode and the anode sandwiching the separator and the separator holding an electrolytic solution, at least one of the positive electrode and the negative electrode of the electrode is bonded in advance separator, or the electrode and the separator are wound into a flat plate, or after being wound elliptically, a method of flat type battery to be flattened and pressed positive electrode collector to the end of the cathode current collector After forming the terminal,
    該正極集電端子の表面部および対向する裏面部に設ける活物質層の未塗工部を省いて正極活物質層を形成し、正極を作製する工程と、負極集電体の端部に負極集電端子を形成したのち、該負極集電端子の表面端部および対向する裏面端部、ならびに負極集電体の他端の表面端部および対向する裏面端部にそれぞれ設けられる活物質層の未塗工部を省いて負極活物質層を形成し、負極を作製する工程と、正極または負極にセパレータを接着する工程と、対向する1対の巻芯で負極集電体の他端の表面部および対向する裏面部における活物質層の未塗工部を挟んで巻芯を一回折り曲げる工程と、巻芯に接触する表面部および対向する裏面部における活物質層の未塗工部には接合部材を塗布しないで、該接合部材を正極または負極の活物質層に塗布 A step of forming a positive electrode active material layer, the cathode omitting uncoated portion of the active material layer provided on the back portion of the surface portion and the opposite of the positive electrode current collector terminal, a negative electrode to the end of the anode current collector After forming the current collector terminal, the surface end portions of the negative electrode current collector terminal and the back surface end portion facing, and the negative electrode collector respectively provided is an active material layer on the back end surface end and opposite end of omitting the uncoated portion to form the anode active material layer, a step of preparing a negative electrode, a positive electrode or a negative electrode to bond the separator step, the other end surface of the negative electrode current collector in the winding core of a pair of opposed a step of bending once core sandwiching the uncoated portion of the active material layer in the back surface of the parts and faces, the uncoated portions of the active material layer in the back surface of the surface portion and facing in contact with the winding core without applying the bonding member, applying the bonding material to the active material layer of the positive or negative electrode る工程と、前記折り曲げられた負極のあいだに正極を挿入したのち、電池の最外周が正極または負極となるように巻き込んでいく工程とを含む平板型電池の製法。 That step and, after inserting the positive electrode between the folded negative electrode manufacturing method of the flat-type battery and a step of the outermost periphery of the battery is going to involve, as a positive or negative electrode. 【請求項7】 電子絶縁性を有し、電解液を保持するセパレータとこのセパレータを狭持する正極と負極から構成され、該正極および負極の電極の少なくとも一方は予めセパレータと接着されており、該電極とセパレータは平板状に巻き取られるか、または楕円状に巻回されたのち、プレスして平板化される平板型電池の製法であって、正極集電体の端部に正極集電端子を形成したのち、 7. have electronically insulating, consists cathode and the anode sandwiching the separator and the separator holding an electrolytic solution, at least one of the positive electrode and the negative electrode of the electrode is bonded in advance separator, or the electrode and the separator are wound into a flat plate, or after being wound elliptically, a method of flat type battery to be flattened and pressed positive electrode collector to the end of the cathode current collector After forming the terminal,
    該正極集電端子の表面部および対向する裏面部、ならびに正極集電体の他端部に設ける活物質層の未塗工部を省いて正極活物質層を形成し、正極を作製する工程と、負極集電体の端部に負極集電端子を形成したのち、該負極集電端子の表面端部および対向する裏面端部、ならびに負極集電体の他端の表面端部および対向する裏面端部にそれぞれ設けられる活物質層の未塗工部を省いて負極活物質層を形成し、負極を作製する工程と、正極または負極にセパレータを接着する工程と、対向する1対の巻芯で負極集電端子の他端の表面部および対向する裏面部における活物質層の未塗工部を挟んで巻芯を一回折り曲げる工程と、巻芯に接触する表面部および対向する裏面部における活物質層の未塗工部には接合部材を塗布しないで、該接合部材を The bottom of the surface portion and the opposite of the positive electrode current collector terminal, and a positive electrode active material layer was formed by omitting the uncoated portion of the active material layer provided on the other end portion of the positive electrode current collector, a step of preparing a positive electrode After forming the negative electrode current collector terminal to the end of the anode current collector, the back side end surface end and the opposite of the negative electrode current collector terminal, and the back surface of the surface end and opposite end of the anode current collector omitting the uncoated portion of the active material layer respectively provided to the ends to form the anode active material layer, a step of preparing a negative electrode, a step of bonding a separator to the positive electrode or the negative electrode, a pair of opposing winding core a step of bending once core sandwiching the uncoated portion of the active material layer in the back surface of the surface portion and the opposite other end of the negative electrode current collector terminal in, the back surface of the surface portion and facing in contact with the winding core without applying the bonding member to the uncoated portion of the active material layer, the bonding member 極または負極の活物質層に塗布する工程と、前記折り曲げられた負極のあいだに正極を挿入したのち、電池の最外周が正極または負極となるように巻き込んでいく工程とを含む平板型電池の製法。 A step of applying the active material layer of the electrode or the negative electrode, after inserting the positive electrode between the folded negative electrode, a plate battery which outermost periphery of the battery and the step of going to involve such a positive or negative electrode process. 【請求項8】 前記正極および負極を作製する工程において、前記電池の中心部に位置する電極の端部から最初の折り曲げ部までの範囲および平板型電池の最内周の内側となる部分には活物質層を省く工程を含む請求項5、 8. A process of manufacturing the positive electrode and the negative electrode, the innermost inner portion serving circumferential range and a plate battery from the end of the electrode is located in the center of the cell to the first bent portion claim 5 including the step of omitting the active material layer,
    6または7記載の平板型電池の製法。 6 or 7 Preparation of a plate battery according. 【請求項9】 前記正極または負極を作製する工程において、前記電池の最外層となる電極の最外周の外側には活物質層を省く工程を含む請求項5、6または7記載の平板型電池の製法。 9. A process for preparing the positive electrode or negative electrode, the claims 5, 6 or 7 a plate battery according to outside the outermost periphery of the electrode serving as the outermost layer comprising the step of omitting the active material layer of the battery of the process. 【請求項10】 前記巻芯を一回折り曲げる工程において、前記電極のうち少なくとも一方が、電池の中心部に位置する電極の端部から最初の折り曲げ部までの長さが該電池の内周一周分の4分の1以内にする工程を含む請求項5、6または7記載の平板型電池の製法。 10. A process for bending once the winding core, at least one of the electrodes, the first folding electric Ikenouchi peripheral circumference length to part from the end position to the electrode in the center portion of the battery preparation of a plate battery of claim 5, 6 or 7 wherein including the partial quarter step to 1 within the.
JP2001272244A 2001-09-07 2001-09-07 Flat plate type battery Pending JP2003086233A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2001272244A JP2003086233A (en) 2001-09-07 2001-09-07 Flat plate type battery

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2001272244A JP2003086233A (en) 2001-09-07 2001-09-07 Flat plate type battery

Publications (2)

Publication Number Publication Date
JP2003086233A true JP2003086233A (en) 2003-03-20
JP2003086233A5 JP2003086233A5 (en) 2005-07-28

Family

ID=19097646

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2001272244A Pending JP2003086233A (en) 2001-09-07 2001-09-07 Flat plate type battery

Country Status (1)

Country Link
JP (1) JP2003086233A (en)

Cited By (65)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2006012813A (en) * 2004-06-28 2006-01-12 Samsung Sdi Co Ltd Electrode assembly and lithium secondary battery using the same
JP2006012808A (en) * 2004-06-22 2006-01-12 Samsung Sdi Co Ltd Electrode assembly and lithium-ion secondary battery using this
JP2006278142A (en) * 2005-03-29 2006-10-12 Sanyo Electric Co Ltd Square battery with spiral electrode
JP2007026939A (en) * 2005-07-19 2007-02-01 Toyota Motor Corp Wound type battery and its manufacturing method
US7682752B2 (en) 2005-09-09 2010-03-23 Sony Corporation Battery
US7807292B2 (en) 2006-05-17 2010-10-05 Sony Corporation Secondary battery
CN101969140A (en) * 2010-07-27 2011-02-09 天津力神电池股份有限公司 Novel winding method of lithium ion battery pole group
JP2011508393A (en) * 2007-12-25 2011-03-10 ビーワイディー カンパニー リミテッド Electrochemical cell having a coiled core
WO2011105285A1 (en) * 2010-02-23 2011-09-01 Tdk株式会社 Electrochemical device and method for manufacturing electrochemical device
WO2011148866A1 (en) * 2010-05-26 2011-12-01 株式会社Gsユアサ Battery
CN102290606A (en) * 2011-01-10 2011-12-21 惠州市德赛聚能电池有限公司 A method of making a lithium battery and method of using the double roll pin
JPWO2010134258A1 (en) * 2009-05-18 2012-11-08 パナソニック株式会社 Non-aqueous electrolyte secondary battery electrode plate and a non-aqueous electrolyte secondary battery
US8547860B2 (en) 2009-02-09 2013-10-01 Qualcomm Incorporated Uplink carrier allocation
JP2013201094A (en) * 2012-03-26 2013-10-03 Hitachi Maxell Ltd Nonaqueous electrolyte secondary battery
US8560386B2 (en) 2008-02-01 2013-10-15 Google Inc. Online map advertising
US8577404B2 (en) 2008-07-15 2013-11-05 Qualcomm Incorporated Prioritization of group communications at a wireless communication device
US8583047B2 (en) 2005-07-27 2013-11-12 T-Mobile Usa, Inc. Frequency band adaptive wireless communication
US8630088B2 (en) 2009-03-27 2014-01-14 Qualcomm Incorporated Portable docking station for a portable computing device
WO2014014118A1 (en) * 2012-07-18 2014-01-23 住友化学株式会社 Adhesive layer, layer and composition
US8653785B2 (en) 2009-03-27 2014-02-18 Qualcomm Incorporated System and method of managing power at a portable computing device and a portable computing device docking station
US8700081B2 (en) 2009-03-30 2014-04-15 Qualcomm Incorporated Determining whether to switch between group calls based on priority within a wireless communications system
US8707061B2 (en) 2009-03-27 2014-04-22 Qualcomm Incorporated System and method of providing scalable computing between a portable computing device and a portable computing device docking station
US8738058B2 (en) 2009-04-06 2014-05-27 Qualcomm Incorporated High-priority communications sessions within a wireless communications system
US8755831B2 (en) 2009-03-24 2014-06-17 QYALCOMM Incorporated Selectively allocating data channel resources to wireless communication devices within a wireless communications system
US8797628B2 (en) 2007-10-19 2014-08-05 Qualcomm Memstechnologies, Inc. Display with integrated photovoltaic device
US8863282B2 (en) 2009-10-15 2014-10-14 Mcafee Inc. Detecting and responding to malware using link files
US8892145B2 (en) 2010-02-18 2014-11-18 Qualcomm Incorporated System and method for selective media object removal in group communications among wireless communication devices
US8892147B2 (en) 2007-06-20 2014-11-18 Qualcomm Incorporated System and method for sharing media in a group communication among wireless communication devices
US8934857B2 (en) 2010-05-14 2015-01-13 Qualcomm Incorporated Controlling field distribution of a wireless power transmitter
US8953713B2 (en) 2010-11-08 2015-02-10 Qualcomm Incorporated System and method for uplink multiple input multiple output transmission
US8968773B2 (en) 2006-05-23 2015-03-03 Dow Corning Corporation Silicone film former for delivery of actives
US9007263B2 (en) 2010-09-09 2015-04-14 Qualcomm Incorporated Phase rotation techniques in a multi-user wireless communication environment
US9007888B2 (en) 2010-11-08 2015-04-14 Qualcomm Incorporated System and method for uplink multiple input multiple output transmission
US9043478B2 (en) 2009-12-15 2015-05-26 Qualcomm Innovation Center, Inc. Methods and apparatus for using a distributed message bus for ad hoc peer-to-peer connectivity
US9066301B2 (en) 2009-04-08 2015-06-23 Qualcomm Incorporated Managing a reverse link transmission power level setpoint during periods of inactivity on the reverse link in a wireless communications system
US9082353B2 (en) 2010-01-05 2015-07-14 Pixtronix, Inc. Circuits for controlling display apparatus
US9084207B2 (en) 2010-11-08 2015-07-14 Qualcomm Incorporated System and method for uplink multiple input multiple output transmission
US9087486B2 (en) 2005-02-23 2015-07-21 Pixtronix, Inc. Circuits for controlling display apparatus
US9116344B2 (en) 2008-10-27 2015-08-25 Pixtronix, Inc. MEMS anchors
US9128669B2 (en) 2009-03-27 2015-09-08 Qualcomm Incorporated System and method of managing security between a portable computing device and a portable computing device docking station
US9128277B2 (en) 2006-02-23 2015-09-08 Pixtronix, Inc. Mechanical light modulators with stressed beams
US9135868B2 (en) 2005-02-23 2015-09-15 Pixtronix, Inc. Direct-view MEMS display devices and methods for generating images thereon
US9134552B2 (en) 2013-03-13 2015-09-15 Pixtronix, Inc. Display apparatus with narrow gap electrostatic actuators
US9158106B2 (en) 2005-02-23 2015-10-13 Pixtronix, Inc. Display methods and apparatus
US9176318B2 (en) 2007-05-18 2015-11-03 Pixtronix, Inc. Methods for manufacturing fluid-filled MEMS displays
US9177523B2 (en) 2005-02-23 2015-11-03 Pixtronix, Inc. Circuits for controlling display apparatus
US9201593B2 (en) 2009-03-27 2015-12-01 Qualcomm Incorporated System and method of managing displays at a portable computing device and a portable computing device docking station
US9229222B2 (en) 2005-02-23 2016-01-05 Pixtronix, Inc. Alignment methods in fluid-filled MEMS displays
US9261694B2 (en) 2005-02-23 2016-02-16 Pixtronix, Inc. Display apparatus and methods for manufacture thereof
CN105470560A (en) * 2015-12-30 2016-04-06 惠州亿纬锂能股份有限公司 High-energy lithium-ion battery and winding method therefor
JP2016051538A (en) * 2014-08-29 2016-04-11 日立オートモティブシステムズ株式会社 Prismatic secondary battery
US9336732B2 (en) 2005-02-23 2016-05-10 Pixtronix, Inc. Circuits for controlling display apparatus
US9344438B2 (en) 2008-12-22 2016-05-17 Qualcomm Incorporated Secure node identifier assignment in a distributed hash table for peer-to-peer networks
US9346569B2 (en) 2010-07-07 2016-05-24 Conopco, Inc. Process and apparatus for producing packets
US9380490B2 (en) 2010-11-08 2016-06-28 Qualcomm Incorporated System and method for uplink multiple input multiple output transmission
US9403289B2 (en) 2009-07-17 2016-08-02 Husqvarna Ab Diamond tool and method of making this tool
US9465424B2 (en) 2009-10-08 2016-10-11 Qualcomm Incorporated Power saving during a connection detection
US9497773B2 (en) 2012-02-08 2016-11-15 QUALOCOMM Incorporated Method and apparatus for enhancing resource allocation for uplink MIMO communication
US9500853B2 (en) 2005-02-23 2016-11-22 Snaptrack, Inc. MEMS-based display apparatus
US9516609B2 (en) 2010-11-08 2016-12-06 Qualcomm Incorporated System and method for uplink multiple input multiple output transmission
US9674675B2 (en) 2007-06-20 2017-06-06 Qualcomm Incorporated Synchronizing floor control and media sharing in a half-duplex PTT system
US9789030B2 (en) 2011-08-23 2017-10-17 Aspire Bariatrics, Inc. Skin port connector and method of installation
US9876213B2 (en) 2015-03-13 2018-01-23 Samsung Sdi Co., Ltd. Electrode assembly and secondary battery having the electrode assembly
US9927635B2 (en) 2006-03-20 2018-03-27 High Performance Optics, Inc. High performance selective light wavelength filtering providing improved contrast sensitivity
US10084321B2 (en) 2015-07-02 2018-09-25 Qualcomm Incorporated Controlling field distribution of a wireless power transmitter

Cited By (81)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2006012808A (en) * 2004-06-22 2006-01-12 Samsung Sdi Co Ltd Electrode assembly and lithium-ion secondary battery using this
USRE42696E1 (en) 2004-06-28 2011-09-13 Samsung Sdi Co., Ltd. Electrode assembly and lithium ion secondary battery using the same
JP2006012813A (en) * 2004-06-28 2006-01-12 Samsung Sdi Co Ltd Electrode assembly and lithium secondary battery using the same
US9135868B2 (en) 2005-02-23 2015-09-15 Pixtronix, Inc. Direct-view MEMS display devices and methods for generating images thereon
US9261694B2 (en) 2005-02-23 2016-02-16 Pixtronix, Inc. Display apparatus and methods for manufacture thereof
US9177523B2 (en) 2005-02-23 2015-11-03 Pixtronix, Inc. Circuits for controlling display apparatus
US9229222B2 (en) 2005-02-23 2016-01-05 Pixtronix, Inc. Alignment methods in fluid-filled MEMS displays
US9087486B2 (en) 2005-02-23 2015-07-21 Pixtronix, Inc. Circuits for controlling display apparatus
US9274333B2 (en) 2005-02-23 2016-03-01 Pixtronix, Inc. Alignment methods in fluid-filled MEMS displays
US9500853B2 (en) 2005-02-23 2016-11-22 Snaptrack, Inc. MEMS-based display apparatus
US9158106B2 (en) 2005-02-23 2015-10-13 Pixtronix, Inc. Display methods and apparatus
US9336732B2 (en) 2005-02-23 2016-05-10 Pixtronix, Inc. Circuits for controlling display apparatus
US8298702B2 (en) 2005-03-29 2012-10-30 Sanyo Electric Co., Ltd. Spiral electrode rectangular battery
JP2006278142A (en) * 2005-03-29 2006-10-12 Sanyo Electric Co Ltd Square battery with spiral electrode
JP2007026939A (en) * 2005-07-19 2007-02-01 Toyota Motor Corp Wound type battery and its manufacturing method
US8583047B2 (en) 2005-07-27 2013-11-12 T-Mobile Usa, Inc. Frequency band adaptive wireless communication
US7682752B2 (en) 2005-09-09 2010-03-23 Sony Corporation Battery
US9128277B2 (en) 2006-02-23 2015-09-08 Pixtronix, Inc. Mechanical light modulators with stressed beams
US9927635B2 (en) 2006-03-20 2018-03-27 High Performance Optics, Inc. High performance selective light wavelength filtering providing improved contrast sensitivity
US8168320B2 (en) 2006-05-17 2012-05-01 Sony Corporation Secondary battery
US7807292B2 (en) 2006-05-17 2010-10-05 Sony Corporation Secondary battery
US8968773B2 (en) 2006-05-23 2015-03-03 Dow Corning Corporation Silicone film former for delivery of actives
US9176318B2 (en) 2007-05-18 2015-11-03 Pixtronix, Inc. Methods for manufacturing fluid-filled MEMS displays
US9210202B2 (en) 2007-06-20 2015-12-08 Qualcomm Incorporated System and method for sharing media in a group communication among wireless communication devices
US9674675B2 (en) 2007-06-20 2017-06-06 Qualcomm Incorporated Synchronizing floor control and media sharing in a half-duplex PTT system
US8892148B2 (en) 2007-06-20 2014-11-18 Qualcomm Incorporated System and method for sharing media in a group communication among wireless communication devices
US8892147B2 (en) 2007-06-20 2014-11-18 Qualcomm Incorporated System and method for sharing media in a group communication among wireless communication devices
US8797628B2 (en) 2007-10-19 2014-08-05 Qualcomm Memstechnologies, Inc. Display with integrated photovoltaic device
EP2223375B1 (en) * 2007-12-25 2017-03-08 Byd Company Limited Electrochemical cell having coiled core
JP2011508393A (en) * 2007-12-25 2011-03-10 ビーワイディー カンパニー リミテッド Electrochemical cell having a coiled core
US8560386B2 (en) 2008-02-01 2013-10-15 Google Inc. Online map advertising
US8676648B2 (en) 2008-02-01 2014-03-18 Google Inc. Online map advertising
US8577404B2 (en) 2008-07-15 2013-11-05 Qualcomm Incorporated Prioritization of group communications at a wireless communication device
US9014741B2 (en) 2008-07-15 2015-04-21 Qualcomm Incorporated Prioritization of group communications at a wireless communication device
US9426632B2 (en) 2008-07-15 2016-08-23 Qualcomm Incorporated Prioritization of group communications at a wireless communication device
US9182587B2 (en) 2008-10-27 2015-11-10 Pixtronix, Inc. Manufacturing structure and process for compliant mechanisms
US9116344B2 (en) 2008-10-27 2015-08-25 Pixtronix, Inc. MEMS anchors
US9344438B2 (en) 2008-12-22 2016-05-17 Qualcomm Incorporated Secure node identifier assignment in a distributed hash table for peer-to-peer networks
US8547860B2 (en) 2009-02-09 2013-10-01 Qualcomm Incorporated Uplink carrier allocation
US8755831B2 (en) 2009-03-24 2014-06-17 QYALCOMM Incorporated Selectively allocating data channel resources to wireless communication devices within a wireless communications system
US9152196B2 (en) 2009-03-27 2015-10-06 Qualcomm Incorporated System and method of managing power at a portable computing device and a portable computing device docking station
US8707061B2 (en) 2009-03-27 2014-04-22 Qualcomm Incorporated System and method of providing scalable computing between a portable computing device and a portable computing device docking station
US9128669B2 (en) 2009-03-27 2015-09-08 Qualcomm Incorporated System and method of managing security between a portable computing device and a portable computing device docking station
US8653785B2 (en) 2009-03-27 2014-02-18 Qualcomm Incorporated System and method of managing power at a portable computing device and a portable computing device docking station
US8630088B2 (en) 2009-03-27 2014-01-14 Qualcomm Incorporated Portable docking station for a portable computing device
US9201593B2 (en) 2009-03-27 2015-12-01 Qualcomm Incorporated System and method of managing displays at a portable computing device and a portable computing device docking station
US8700081B2 (en) 2009-03-30 2014-04-15 Qualcomm Incorporated Determining whether to switch between group calls based on priority within a wireless communications system
US8738058B2 (en) 2009-04-06 2014-05-27 Qualcomm Incorporated High-priority communications sessions within a wireless communications system
US9066301B2 (en) 2009-04-08 2015-06-23 Qualcomm Incorporated Managing a reverse link transmission power level setpoint during periods of inactivity on the reverse link in a wireless communications system
JPWO2010134258A1 (en) * 2009-05-18 2012-11-08 パナソニック株式会社 Non-aqueous electrolyte secondary battery electrode plate and a non-aqueous electrolyte secondary battery
US9403289B2 (en) 2009-07-17 2016-08-02 Husqvarna Ab Diamond tool and method of making this tool
US9465424B2 (en) 2009-10-08 2016-10-11 Qualcomm Incorporated Power saving during a connection detection
US8863282B2 (en) 2009-10-15 2014-10-14 Mcafee Inc. Detecting and responding to malware using link files
US9043478B2 (en) 2009-12-15 2015-05-26 Qualcomm Innovation Center, Inc. Methods and apparatus for using a distributed message bus for ad hoc peer-to-peer connectivity
US9082353B2 (en) 2010-01-05 2015-07-14 Pixtronix, Inc. Circuits for controlling display apparatus
US8892145B2 (en) 2010-02-18 2014-11-18 Qualcomm Incorporated System and method for selective media object removal in group communications among wireless communication devices
WO2011105285A1 (en) * 2010-02-23 2011-09-01 Tdk株式会社 Electrochemical device and method for manufacturing electrochemical device
US9337666B2 (en) 2010-05-14 2016-05-10 Qualcomm Incorporated Controlling field distribution of a wireless power transmitter
US8934857B2 (en) 2010-05-14 2015-01-13 Qualcomm Incorporated Controlling field distribution of a wireless power transmitter
WO2011148866A1 (en) * 2010-05-26 2011-12-01 株式会社Gsユアサ Battery
US8956748B2 (en) 2010-05-26 2015-02-17 Gs Yuasa International Ltd. Battery
JP5737289B2 (en) * 2010-05-26 2015-06-17 株式会社Gsユアサ battery
CN102893439A (en) * 2010-05-26 2013-01-23 株式会社杰士汤浅国际 battery
US9346569B2 (en) 2010-07-07 2016-05-24 Conopco, Inc. Process and apparatus for producing packets
CN101969140A (en) * 2010-07-27 2011-02-09 天津力神电池股份有限公司 Novel winding method of lithium ion battery pole group
US9007263B2 (en) 2010-09-09 2015-04-14 Qualcomm Incorporated Phase rotation techniques in a multi-user wireless communication environment
US9516609B2 (en) 2010-11-08 2016-12-06 Qualcomm Incorporated System and method for uplink multiple input multiple output transmission
US9084207B2 (en) 2010-11-08 2015-07-14 Qualcomm Incorporated System and method for uplink multiple input multiple output transmission
US9380490B2 (en) 2010-11-08 2016-06-28 Qualcomm Incorporated System and method for uplink multiple input multiple output transmission
US9007888B2 (en) 2010-11-08 2015-04-14 Qualcomm Incorporated System and method for uplink multiple input multiple output transmission
US8953713B2 (en) 2010-11-08 2015-02-10 Qualcomm Incorporated System and method for uplink multiple input multiple output transmission
CN102290606A (en) * 2011-01-10 2011-12-21 惠州市德赛聚能电池有限公司 A method of making a lithium battery and method of using the double roll pin
US9789030B2 (en) 2011-08-23 2017-10-17 Aspire Bariatrics, Inc. Skin port connector and method of installation
US9497773B2 (en) 2012-02-08 2016-11-15 QUALOCOMM Incorporated Method and apparatus for enhancing resource allocation for uplink MIMO communication
JP2013201094A (en) * 2012-03-26 2013-10-03 Hitachi Maxell Ltd Nonaqueous electrolyte secondary battery
WO2014014118A1 (en) * 2012-07-18 2014-01-23 住友化学株式会社 Adhesive layer, layer and composition
US9134552B2 (en) 2013-03-13 2015-09-15 Pixtronix, Inc. Display apparatus with narrow gap electrostatic actuators
JP2016051538A (en) * 2014-08-29 2016-04-11 日立オートモティブシステムズ株式会社 Prismatic secondary battery
US9876213B2 (en) 2015-03-13 2018-01-23 Samsung Sdi Co., Ltd. Electrode assembly and secondary battery having the electrode assembly
US10084321B2 (en) 2015-07-02 2018-09-25 Qualcomm Incorporated Controlling field distribution of a wireless power transmitter
CN105470560A (en) * 2015-12-30 2016-04-06 惠州亿纬锂能股份有限公司 High-energy lithium-ion battery and winding method therefor

Similar Documents

Publication Publication Date Title
JP3471244B2 (en) Method for producing a nonaqueous electrolyte secondary battery
JP3303694B2 (en) A lithium ion secondary battery and a manufacturing method thereof
CN1184712C (en) Stacked electrochemical cell and method for preparing same
JP3743781B2 (en) Non-aqueous electrolyte secondary battery
US8440356B2 (en) Process for manufacturing electrolyte assembly for secondary battery of novel laminated structure
JP3225864B2 (en) A lithium ion secondary battery and a manufacturing method thereof
CN1269253C (en) Method of producing polymer electrolyte battery
CN100345333C (en) Nonaqueous electrolyte secondary battery and its producing method
CN1313643B (en) Electrodes and batteries and manufacture thereof
JP3225867B2 (en) A lithium ion secondary battery and a manufacturing method thereof
CN1732587B (en) Electrochemical device and method for manufacturing same
JP3637408B2 (en) Sheet electrode and battery using the same
JP3225871B2 (en) Method for producing a lithium ion secondary battery
KR20060044822A (en) Nonaqueous electrolyte secondary battery
EP1041658A1 (en) Method for producing nonaqueous gel electrolyte cell
US6232014B1 (en) Lithium ion secondary battery and manufacture thereof
EP0851523A1 (en) Lithium ion battery
CN1363122A (en) Multilayer stacked electrochemical cell and method for preparing same
JP2002151055A (en) Lithium ion secondary battery
JP3223824B2 (en) Lithium ion secondary battery
JP4568123B2 (en) Non-aqueous electrolyte battery
CN1193453C (en) Nonaqueous electrolyte secondary battery and manufacturing method thereof
KR100921347B1 (en) Electrode Assembly Prepared in longitudinal Folding Manner and Electrochemical Cell Employing the Same
CN1144311C (en) Gel electrolyte and gel electrolytic cell
US7132194B2 (en) Non-aqueous electrolytic battery and its manufacturing method

Legal Events

Date Code Title Description
A521 Written amendment

Free format text: JAPANESE INTERMEDIATE CODE: A523

Effective date: 20041220

A621 Written request for application examination

Free format text: JAPANESE INTERMEDIATE CODE: A621

Effective date: 20041220

A977 Report on retrieval

Free format text: JAPANESE INTERMEDIATE CODE: A971007

Effective date: 20060420

A131 Notification of reasons for refusal

Free format text: JAPANESE INTERMEDIATE CODE: A131

Effective date: 20060613

A521 Written amendment

Free format text: JAPANESE INTERMEDIATE CODE: A523

Effective date: 20060810

A02 Decision of refusal

Free format text: JAPANESE INTERMEDIATE CODE: A02

Effective date: 20071113