JPH09259932A - Secondary battery with charging circuit - Google Patents
Secondary battery with charging circuitInfo
- Publication number
- JPH09259932A JPH09259932A JP8070410A JP7041096A JPH09259932A JP H09259932 A JPH09259932 A JP H09259932A JP 8070410 A JP8070410 A JP 8070410A JP 7041096 A JP7041096 A JP 7041096A JP H09259932 A JPH09259932 A JP H09259932A
- Authority
- JP
- Japan
- Prior art keywords
- wiring board
- secondary battery
- charging circuit
- conductor layer
- main surface
- 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
Links
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、充電回路付きの薄
型二次電池に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a thin secondary battery with a charging circuit.
【０００２】[0002]
【従来の技術】たとえば携帯型電話機やテレビカメラな
どの電源としては、一般的に、充放電の繰り返しが可能
な二次電池を使用している。そして、この種の二次電池
には、小形，軽量，薄型化や大容量，高電圧などが求め
られており、たとえば、正極層，ポリマ−電解質層およ
び負極層を重ね合わせ、シート状（薄型）に一体化構成
した厚さ 0.5mm程度のリチウム非水溶媒電池も知られて
いる（たとえば米国特許第 5,296,318号明細書）。ここ
で、正極層はリチウムイオンを吸蔵，放出する炭素質材
料（たとえばポリアニリン，ポリアセン）や金属酸化物
であり、負極層はリチウム金属や炭素質およびリチウム
合金系である。なお、正極層および負極層は、柔軟性な
どを付与するために電解質保持性のポリマーを適宜含有
するとともに、集電体を有している。2. Description of the Related Art As a power source for, for example, a portable telephone or a television camera, a secondary battery which can be repeatedly charged and discharged is generally used. Further, this type of secondary battery is required to have a small size, a light weight, a thin shape, a large capacity, a high voltage, and the like. For example, a positive electrode layer, a polymer electrolyte layer, and a negative electrode layer are stacked to form a sheet (thin type). ), A lithium non-aqueous solvent battery having a thickness of about 0.5 mm is also known (for example, US Pat. No. 5,296,318). Here, the positive electrode layer is a carbonaceous material (for example, polyaniline or polyacene) that occludes and releases lithium ions, or a metal oxide, and the negative electrode layer is a lithium metal, carbonaceous, or lithium alloy system. The positive electrode layer and the negative electrode layer appropriately contain an electrolyte retaining polymer in order to impart flexibility and the like, and also have a current collector.
【０００３】図３は、前記ポリマー電解質電池の要部構
成を断面的に示したものである。図３において、１はセ
パレーターの機能をする電解質保持性のポリマ−電解質
系（たとえばヘキサフロロプロピレン−フッ化ビニリデ
ン共重合体などのポリマと、リチウム塩などのエチレン
カーボネート溶液…非水電解液…との系）、２は金属酸
化物などの活物質，非水電解液および電解質保持性ポリ
マを含む正極層を集電体に積層して成る正極、３はリチ
ウムイオンを吸蔵，放出する活物質，非水電解液および
電解質保持性ポリマを含む負極層を集電体に積層して成
る負極、４，５は前記正極２および負極３の裏面側を被
覆保護するシール用シートである。FIG. 3 is a sectional view showing the structure of the main part of the polymer electrolyte battery. In FIG. 3, reference numeral 1 denotes an electrolyte-retaining polymer-electrolyte system that functions as a separator (for example, a polymer such as hexafluoropropylene-vinylidene fluoride copolymer, an ethylene carbonate solution such as a lithium salt ... A non-aqueous electrolyte solution ... 2) is a positive electrode formed by stacking a positive electrode layer containing an active material such as a metal oxide, a non-aqueous electrolyte and an electrolyte retaining polymer on a current collector, and 3 is an active material that absorbs and releases lithium ions, Negative electrodes formed by laminating a negative electrode layer containing a non-aqueous electrolytic solution and an electrolyte retaining polymer on a current collector, and 4, 5 are sealing sheets for covering and protecting the back surfaces of the positive electrodes 2 and the negative electrodes 3.
【０００４】ところで、前記リチウムイオン二次電池
は、負極３中の活物質の材質によって放電限界電圧が異
なるとはいえ、通常の二次電池の場合と同様に、放電に
伴って電池容量（電池電圧）が放電限界値に下がった時
点で、たとえば、図４に基本回路を示す充電器を用い定
電流・定電圧充電を施すことにより、繰り返し使用され
ている。図４において、6a，6bは過充電保護用パワー M
OS FET、7a，7b，7cは電圧／電流検出用の抵抗、８は基
準電圧源である。Although the lithium ion secondary battery has a different discharge limit voltage depending on the material of the active material in the negative electrode 3, as in the case of a normal secondary battery, the battery capacity (battery) changes with discharge. When the voltage) has dropped to the discharge limit value, the battery is repeatedly used, for example, by performing constant current / constant voltage charging using a charger whose basic circuit is shown in FIG. In FIG. 4, 6a and 6b are overcharge protection power M
OS FETs, 7a, 7b and 7c are resistors for voltage / current detection, and 8 is a reference voltage source.
【０００５】[0005]
【発明が解決しようとする課題】しかしながら、上記薄
型電池の場合は、比較的薄く、かつ柔軟性（可撓性）に
富むので、電源の装着スペース効率の向上などを併せて
図ることができる反面、所要の充電を行うため、充電器
に装着など行う場合、前記の薄さや柔軟性（可撓性）が
反って災いとなって、充電作業を煩雑化する傾向があ
る。つまり、薄型の二次電池が変形など起こし易いた
め、位置決めや固定的な装着・保持が困難であり、常
時、一様な条件で充電操作を行なえないことが懸念され
る。However, in the case of the above thin battery, since it is relatively thin and rich in flexibility, it is possible to improve the mounting space efficiency of the power source and the like. In order to perform required charging, when the battery is attached to a charger, the thinness and the flexibility (flexibility) are warped to cause a disaster, and the charging work tends to be complicated. That is, since the thin secondary battery is likely to be deformed, it is difficult to perform positioning and fixed mounting / holding, and it is feared that the charging operation cannot always be performed under uniform conditions.
【０００６】本発明は、上記事情に対処してなされたも
ので、薄型二次電池の特長を生かしながら、所要の充電
を容易に行うことができる二次電池の提供を目的とす
る。The present invention has been made in consideration of the above circumstances, and an object of the present invention is to provide a secondary battery which can be easily charged as required while taking advantage of the features of the thin secondary battery.
【０００７】[0007]
【課題を解決するための手段】請求項１の発明は、一主
面に充電回路および保護回路の少なくともいずれか一方
の回路付きの第１の配線基板本体と、前記第１の配線基
板本体の他主面に形成された第１の導電体層と、前記第
１の配線基板本体に対応する第２の配線基板本体と、前
記第２の配線基板本体の一主面に形成された第２の導電
体層と、前記第１の導電体層および第２の導電体層を対
向する電極集電体として、両配線基板本体面間に一体的
に設けられ、かつ前記充電回路および保護回路に電気的
に接続する薄型の二次電池とを備えたことを特徴とする
充電回路付き二次電池である。According to a first aspect of the present invention, there is provided a first wiring board main body having at least one of a charging circuit and a protection circuit on one main surface thereof, and the first wiring board main body. A first conductor layer formed on the other main surface, a second wiring board body corresponding to the first wiring board body, and a second wiring board formed on one main surface of the second wiring board body. Of the electric conductor layer and the first electric conductor layer and the second electric conductor layer as an electrode current collector facing each other, are integrally provided between both wiring board body surfaces, and are provided in the charging circuit and the protection circuit. A secondary battery with a charging circuit, comprising a thin secondary battery electrically connected.
【０００８】請求項２の発明は、一主面に充電回路付き
の第１の配線基板本体と、前記第１の配線基板本体の他
主面に形成された第１の導電体層と、一主面に保護回路
付きの第２の配線基板本体と、前記第２の配線基板本体
の他主面に形成された第２の導電体層と、前記第１の導
電体層および第２の導電体層を対向する電極集電体とし
て、両配線基板本体面間に一体的に設けられ、かつ前記
充電回路および保護回路に電気的に接続する薄型の二次
電池とを備えたことを特徴とする充電回路付き二次電池
である。According to a second aspect of the present invention, there is provided a first wiring board main body having a charging circuit on one main surface, and a first conductor layer formed on the other main surface of the first wiring board main body. A second wiring board body having a protection circuit on its main surface, a second conductor layer formed on the other main surface of the second wiring board body, the first conductor layer and the second conductor. A thin secondary battery that is integrally provided between both wiring board body surfaces and that is electrically connected to the charging circuit and the protection circuit as an electrode current collector facing the body layer. It is a secondary battery with a charging circuit.
【０００９】上記発明において、配線基板本体は、たと
えばエポキシ系樹脂やポリイミド系樹脂を絶縁体とした
配線基板であり、かつ薄型の二次電池の一方の電極集電
体が他主面に一体的に形設されたものである。すなわ
ち、配線基板本体は、二次電池の一方の電極集電体を成
す導体層を備えているとともに、電極集電体を成す導体
層に電気的に接続する充電回路および保護回路を一主面
に併せて有している。ここで、充電回路は、たとえば電
圧／電流制御の抵抗などを含む配線パターンであり、ま
た、保護回路は、たとえばパワー MOS FETを含む配線パ
ターンで、充電器などに接続する外部入出力用接続端子
を備えている。In the above invention, the wiring board main body is a wiring board using, for example, an epoxy resin or a polyimide resin as an insulator, and one electrode current collector of a thin secondary battery is integrally formed on the other main surface. It was formed in. That is, the wiring board main body is provided with a conductor layer that forms one of the electrode current collectors of the secondary battery, and has a charging circuit and a protection circuit that are electrically connected to the conductor layer that forms the electrode current collector on one main surface. In addition to. Here, the charging circuit is, for example, a wiring pattern including a voltage / current control resistor, and the protection circuit is, for example, a wiring pattern including a power MOS FET, and is an external input / output connection terminal connected to a charger or the like. Is equipped with.
【００１０】さらに、配線基板本体面の導電層は、正極
集電体の場合、たとえばアルミニウム層，アルミニウム
メッシュ層，アルミニウム製エキスバンドメタル層，ア
ルミニウム製パンチメタル層などであり、負極集電体の
場合は銅層，銅メッシュ層，銅製エキスバンドメタル
層，銅製パンチメタル層などである。Further, in the case of the positive electrode current collector, the conductive layer on the main surface of the wiring board is, for example, an aluminum layer, an aluminum mesh layer, an aluminum extract band metal layer, an aluminum punch metal layer, or the like. In the case, it is a copper layer, a copper mesh layer, a copper extract band metal layer, a copper punch metal layer, or the like.
【００１１】上記発明の薄型二次電池は、前記図３に図
示した構成に準じて、セパレーターの機能をする電解質
保持性のポリマ−電解質系（たとえばヘキサフロロプロ
ピレン−フッ化ビニリデン共重合体などのポリマと、リ
チウム塩などのエチレンカーボネート溶液…非水電解液
…との系）１、金属酸化物などの活物質，非水電解液お
よび電解質保持性ポリマを含む正極層を配線基板本体面
の導電層が成す集電体に積層して成る正極２、リチウム
イオンを吸蔵，放出する活物質，非水電解液および電解
質保持性ポリマを含む負極層を配線基板本体面の導電層
が成す集電体に積層して成る負極３、および前記ポリマ
−電解質系１を介して重ね合わせた正極２，負極３の外
表面（裏面）側を被覆保護する配線基板本体で構成され
ている。ここで、正極２の活物質としては、たとえばリ
チウムマンガン複合酸化物，二酸化マンガン，リチウム
含有コバルト酸化物，リチウム含有ニッケルコバルト酸
化物，リチウムを含む非晶質五酸化バナジウム，カルコ
ゲン化合物などが挙げられる。また、負極活物質として
は、たとえばビスフェノール樹脂，ポリアクリロニトリ
ル，セルローズなどの焼成物、コークスやピッチの焼成
物が挙げられ、これらは天然もしくは人口グラファイ
ト，カーボンブラック，アセチレンブラック，ケッチェ
ンブラック，ニッケル粉末，ニッケル粉末などを含有し
た形態を採ってもよい。The thin secondary battery of the present invention has an electrolyte-retaining polymer-electrolyte system (for example, hexafluoropropylene-vinylidene fluoride copolymer) which functions as a separator in accordance with the structure shown in FIG. Conducting a positive electrode layer containing a polymer and an ethylene carbonate solution such as a lithium salt ... a non-aqueous electrolyte ... 1, an active material such as a metal oxide, a non-aqueous electrolyte and an electrolyte-retaining polymer on the surface of the wiring board main body. A current collector in which a conductive layer on the main surface of a wiring board comprises a positive electrode 2 laminated on a current collector formed of layers, an active material that absorbs and releases lithium ions, a negative electrode layer containing a non-aqueous electrolyte and an electrolyte retaining polymer. And a wiring board body for covering and protecting the outer surface (back surface) side of the positive electrode 2 and the negative electrode 3 which are superposed with the polymer-electrolyte system 1 interposed therebetween. Here, examples of the active material of the positive electrode 2 include lithium manganese oxide, manganese dioxide, lithium-containing cobalt oxide, lithium-containing nickel cobalt oxide, lithium-containing amorphous vanadium pentoxide, and chalcogen compound. . Examples of the negative electrode active material include fired products of bisphenol resin, polyacrylonitrile and cellulose, and fired products of coke and pitch. These are natural or artificial graphite, carbon black, acetylene black, Ketjen black, nickel powder. , Nickel powder or the like may be included.
【００１２】さらに、電解質系は、たとえばエチレンカ
ーボネート，プロピレンカーボネート，ブチレンカーボ
ネート，ジメチルカーボネート，ジエチルカーボネー
ト，メチルエチルカーボネートなどの非水溶媒に、過塩
素酸リチウム，六フッ化リン酸リチウム，ホウ四フッ化
リチウム，六フッ化ヒ素リチウム，トリフルオロメタン
スルホン酸リチウムなどを 0.2〜 2mol/ l程度に溶解さ
せたものが挙げられる。請求項１の発明では、一主面に
充電回路および保護回路の少なくともいずれか一方の回
路付き配線基板本体の他主面に、一方の電極集電体が一
体配設された形で薄型の二次電池が付設されている。つ
まり、一対の支持体の対向面間に薄型の二次電池が一体
に挟持・付設される一方、一支持体裏面に充電回路およ
び保護回路の少なくとも一方を備えた構成を採ってい
る。このため、機械的な補強性および非変形化などに伴
い取扱操作性が向上するだけでなく、信頼性の高い充電
を容易に達成できる。Further, the electrolyte system is composed of, for example, a non-aqueous solvent such as ethylene carbonate, propylene carbonate, butylene carbonate, dimethyl carbonate, diethyl carbonate, methyl ethyl carbonate, lithium perchlorate, lithium hexafluorophosphate, and boron tetrafluoride. Lithium bromide, lithium arsenide hexafluoride, lithium trifluoromethanesulfonate, etc. are dissolved in about 0.2 to 2 mol / l. According to the invention of claim 1, one electrode current collector is integrally arranged on the other main surface of the wiring board main body with a circuit of at least one of the charging circuit and the protection circuit on one main surface. A secondary battery is attached. That is, a thin secondary battery is sandwiched and attached integrally between the facing surfaces of the pair of supports, while at least one of the charging circuit and the protection circuit is provided on the back surface of one support. Therefore, not only the handling operability is improved due to mechanical reinforcement and non-deformation, but also highly reliable charging can be easily achieved.
【００１３】請求項２の発明では、一主面に充電回路
が，他主面に一方の電極集電体が一体配設された配線基
板本体および一主面に保護回路が，他主面に他方の電極
集電体が一体配設された配線基板本体を支持体とし、こ
の支持体間に薄型の二次電池が付設されている。つま
り、一対の支持体の対向面間に薄型の二次電池が一体に
挟持・付設される一方、両支持体裏面に充電回路および
保護回路を別けて配置した構成を採っている。このた
め、機械的な補強性および非変形化などに伴い取扱操作
性が向上するだけでなく、より信頼性の高い充電を容易
に達成できる。According to the second aspect of the present invention, a charging circuit is provided on one main surface, a wiring board main body on which one electrode current collector is integrally provided on the other main surface, and a protection circuit on one main surface, and the other main surface. A wiring board main body integrally provided with the other electrode current collector is used as a support, and a thin secondary battery is attached between the supports. That is, while a thin secondary battery is integrally sandwiched and attached between the facing surfaces of a pair of supports, a charging circuit and a protection circuit are separately arranged on the back surfaces of both supports. Therefore, not only the handling operability is improved due to mechanical reinforcement and non-deformation, but also more reliable charging can be easily achieved.
【００１４】[0014]
【発明の実施の形態】以下図１，図２を参照して実施例
を説明する。BEST MODE FOR CARRYING OUT THE INVENTION Embodiments will be described below with reference to FIGS.
【００１５】図１は、第１の実施例に係る二次電池の概
略構成を示す断面図である。図１において、９は一主面
に充電回路10もしくは保護回路11が配設され、かつ他主
面に一方の電極集電体を成す第１の導電体層 12aが一体
的に形成された第１の配線基板本体、９′は前記第１の
配線基板本体９の導電体層 12aに対向する第２の導電体
層 12bが一体的に形成された第２の配線基板本体であ
る。そして、これら第１の配線基板本体９および第１の
配線基板本体９′は、シール用シートを兼ねた形で、前
記第１の導電体層 12aおよび第２の導電体層 12bを対向
する電極集電体して、両配線基板本体９，９′間に、電
池要素部が挟着・一体的に設けられ、かつ前記充電回路
10もしくは保護回路11に電気的に接続して、薄型の二次
電池を形成している。FIG. 1 is a sectional view showing a schematic structure of a secondary battery according to the first embodiment. In FIG. 1, reference numeral 9 denotes a first main surface on which a charging circuit 10 or a protection circuit 11 is provided, and the other main surface is integrally formed with a first conductor layer 12a forming one of the electrode current collectors. The first wiring board body 9'is a second wiring board body integrally formed with a second conductor layer 12b facing the conductor layer 12a of the first wiring board body 9. The first wiring board main body 9 and the first wiring board main body 9'also serve as a sealing sheet and are electrodes facing the first conductor layer 12a and the second conductor layer 12b. As a current collector, a battery element portion is sandwiched and integrally provided between both wiring board bodies 9 and 9 ', and the charging circuit is provided.
10 or the protection circuit 11 is electrically connected to form a thin secondary battery.
【００１６】ここで、配線基板本体９，９′は、ポリイ
ミド系樹脂もしくはエポキシ系樹脂を絶縁体として形成
したものであり、一主面には電池出力端子および充電端
子（いずれも図示省略）、電圧／電流制御の抵抗などを
含む充電回路（配線パターン）10、およびパワー MOS F
ETを含む保護回路11（配線パターン）を備えている。ま
た、薄型の二次電池は、前記第１の導電体層 12aを一方
の電極集電体（たとえば正極集電体を成すアルミニウム
層）とし、第２の導電体層 12bを他方の電極集電体（た
とえば負極集電体を成す銅層）としている。そして、前
記第１の導電体層 12aに金属酸化物などの活物質，非水
電解液および電解質保持性ポリマを含む正極層を積層し
て正極２が形成されている。一方、第２の導電体層 12b
にリチウムイオンを吸蔵，放出する活物質，非水電解液
および電解質保持性ポリマを含む負極層を積層して負極
３を形成し、これら正極２と負極３との間に、セパレー
ターの機能をする電解質保持性のポリマ−電解質系（た
とえばヘキサフロロプロピレン−フッ化ビニリデン共重
合体などのポリマと、リチウム塩などのエチレンカーボ
ネート溶液…非水電解液…との系）１を介在させて重ね
合わせ、電池要素部を形成した構成を採っている。な
お、両配線基板本体９，９′間に、挟着・形設された電
池要素部は、その周辺部を封口材13で液密に封止されて
所定のシート状二次電池を構成している。Here, the wiring board bodies 9 and 9'are formed by using a polyimide resin or an epoxy resin as an insulator, and a battery output terminal and a charging terminal (both not shown) are provided on one main surface. Charging circuit (wiring pattern) 10 including voltage / current control resistors, and power MOS F
The protection circuit 11 (wiring pattern) including ET is provided. In a thin secondary battery, the first conductor layer 12a is used as one electrode current collector (for example, an aluminum layer forming a positive electrode current collector), and the second conductor layer 12b is used as the other electrode current collector. It is a body (for example, a copper layer forming a negative electrode current collector). Then, the positive electrode 2 is formed by laminating a positive electrode layer containing an active material such as a metal oxide, a non-aqueous electrolyte and an electrolyte retaining polymer on the first conductor layer 12a. On the other hand, the second conductor layer 12b
A negative electrode layer containing an active material that absorbs and releases lithium ions, a non-aqueous electrolyte and an electrolyte retaining polymer is laminated to form a negative electrode 3, and a separator function is provided between the positive electrode 2 and the negative electrode 3. An electrolyte-retaining polymer-electrolyte system (for example, a system such as a polymer such as hexafluoropropylene-vinylidene fluoride copolymer and an ethylene carbonate solution such as a lithium salt ... A non-aqueous electrolyte solution) is superposed with 1 interposed therebetween, The battery element part is formed. The battery element portion sandwiched and formed between the two wiring board bodies 9 and 9'is liquid-tightly sealed around the periphery of the battery element portion to form a predetermined sheet-shaped secondary battery. ing.
【００１７】この実施例に係る二次電池は、小形，軽量
化および薄型化の目的が十分達成されており、また、こ
の二次電池は機械的に補強された形態を採っているた
め、充放電などの取扱操作も容易であった。特に、充電
操作においては、煩雑な操作などを要せずに、所要の充
電を容易に行うことができ、この種二次電池の信頼性や
エネルギー効率の高い使用が可能であった。The secondary battery according to this embodiment has sufficiently achieved the objectives of downsizing, weight reduction, and thinning. Further, since the secondary battery has a mechanically reinforced form, Handling operations such as discharging were easy. Particularly, in the charging operation, required charging can be easily performed without requiring complicated operations, and the secondary battery of this kind can be used with high reliability and energy efficiency.
【００１８】上記では、第１の配線基板本体９として、
一主面に充電回路10もしくは保護回路11が形成された場
合を例示したが、一主面に充電回路10および保護回路11
が形成された配線基板本体９を用いても、同様に信頼性
やエネルギー効率の高い二次電池として機能する。In the above, as the first wiring board body 9,
Although the case where the charging circuit 10 or the protection circuit 11 is formed on one main surface is illustrated, the charging circuit 10 and the protection circuit 11 are formed on one main surface.
Even if the wiring board body 9 in which is formed is used, it similarly functions as a secondary battery having high reliability and energy efficiency.
【００１９】図２は、第２の実施例に係る二次電池の概
略構成を示す断面図である。図２において、９は一主面
に充電回路10が配設され、かつ他主面に一方の電極集電
体を成す第１の導電体層 12aが一体的に形成された第１
の配線基板本体、９′は前記第１の配線基板本体９の導
電体層 12aに対向する第２の導電体層 12bが一体的に形
成され、かつ他主面に保護回路11が形成された第２の配
線基板本体である。そして、これら第１の配線基板本体
９および第１の配線基板本体９′は、シール用シートを
兼ねた形で、前記第１の導電体層 12aおよび第２の導電
体層 12bを対向する電極集電体して、両配線基板本体
９，９′間に、電池要素部を挟着・一体的に設けられ、
かつ前記充電回路10および保護回路11に電気的に接続し
て、薄型の二次電池を形成している。FIG. 2 is a sectional view showing a schematic structure of a secondary battery according to the second embodiment. In FIG. 2, reference numeral 9 denotes a first main surface in which the charging circuit 10 is arranged and the other main surface is integrally formed with a first conductor layer 12a forming one electrode collector.
The wiring board body 9'is formed integrally with the second conductor layer 12b facing the conductor layer 12a of the first wiring board body 9 and the protection circuit 11 is formed on the other main surface. It is a second wiring board body. The first wiring board main body 9 and the first wiring board main body 9'also serve as a sealing sheet and are electrodes facing the first conductor layer 12a and the second conductor layer 12b. As a current collector, a battery element part is sandwiched and integrally provided between both wiring board bodies 9 and 9 ',
Moreover, the charging circuit 10 and the protection circuit 11 are electrically connected to form a thin secondary battery.
【００２０】ここで、配線基板本体９，９′は、ポリイ
ミド系樹脂もしくはエポキシ系樹脂を絶縁体として形成
したものであり、一主面には電池出力端子および充電端
子（いずれも図示省略）、電圧／電流制御の抵抗などを
含む充電回路（配線パターン）10、およびパワー MOS F
ETを含む保護回路11（配線パターン）を備えている。ま
た、薄型の二次電池は、前記第１の導電体層 12aを一方
の電極集電体（たとえば正極集電体を成すアルミニウム
層）とし、第２の導電体層 12bを他方の電極集電体（た
とえば負極集電体を成す銅層）としている。そして、前
記第１の導電体層 12aに金属酸化物などの活物質，非水
電解液および電解質保持性ポリマを含む正極層を積層し
て正極２が形成されている。一方、第２の導電体層 12b
にリチウムイオンを吸蔵，放出する活物質，非水電解液
および電解質保持性ポリマを含む負極層を積層して負極
３を形成し、これら正極２と負極３との間に、セパレー
ターの機能をする電解質保持性のポリマ−電解質系（た
とえばヘキサフロロプロピレン−フッ化ビニリデン共重
合体などのポリマと、リチウム塩などのエチレンカーボ
ネート溶液…非水電解液…との系）１を介在させて重ね
合わせ、電池要素部を形成した構成を採っている。な
お、両配線基板本体９，９′間に、挟着・形設された電
池要素部は、その周辺部を封口材13で液密に封止されて
所定の薄型二次電池を構成している。Here, the wiring board bodies 9 and 9'are formed by using a polyimide resin or an epoxy resin as an insulator, and a battery output terminal and a charging terminal (both not shown) are provided on one main surface. Charging circuit (wiring pattern) 10 including voltage / current control resistors, and power MOS F
The protection circuit 11 (wiring pattern) including ET is provided. In a thin secondary battery, the first conductor layer 12a is used as one electrode current collector (for example, an aluminum layer forming a positive electrode current collector), and the second conductor layer 12b is used as the other electrode current collector. It is a body (for example, a copper layer forming a negative electrode current collector). Then, the positive electrode 2 is formed by laminating a positive electrode layer containing an active material such as a metal oxide, a non-aqueous electrolyte and an electrolyte retaining polymer on the first conductor layer 12a. On the other hand, the second conductor layer 12b
A negative electrode layer containing an active material that absorbs and releases lithium ions, a non-aqueous electrolytic solution, and an electrolyte-retaining polymer is laminated to form a negative electrode 3, and a separator functions between the positive electrode 2 and the negative electrode 3. An electrolyte-retaining polymer-electrolyte system (for example, a system of a polymer such as hexafluoropropylene-vinylidene fluoride copolymer and an ethylene carbonate solution such as a lithium salt ... A non-aqueous electrolyte solution) is superposed with an intervening 1 therebetween. The battery element part is formed. The battery element part sandwiched and formed between the two wiring board bodies 9 and 9'is liquid-tightly sealed around the periphery of the battery element part to form a predetermined thin secondary battery. There is.
【００２１】この実施例に係る二次電池は、小形，軽量
化および薄型化の目的が十分達成されており、また、こ
の二次電池は機械的に補強された形態を採っているた
め、充放電などの取扱操作も容易であった。特に、充電
操作においては、煩雑な操作などを要せずに、所要の充
電を容易に行うことができ、この種二次電池の信頼性や
エネルギー効率の高い使用が可能であった。The secondary battery according to this embodiment has sufficiently achieved the objectives of downsizing, weight saving and thinning, and since the secondary battery has a mechanically reinforced form, Handling operations such as discharging were easy. Particularly, in the charging operation, required charging can be easily performed without requiring complicated operations, and the secondary battery of this kind can be used with high reliability and energy efficiency.
【００２２】なお、本発明は上記例示に限定されるもの
でなく、発明の趣旨を逸脱しない範囲でいろいろの変形
を採ることができる。すなわち、電池要素部の構成素
材，厚さ・形状、配線基板本体の構造，構成素材，形状
などは、特に限定されない。The present invention is not limited to the above examples, and various modifications can be made without departing from the spirit of the invention. That is, the constituent material, thickness and shape of the battery element part, the structure, constituent material, shape, etc. of the wiring board body are not particularly limited.
【００２３】[0023]
【発明の効果】請求項１および請求項２の発明によれ
ば、二次電池自体が充電回路および保護回路を備え、か
つ配線基板本体を構成部材としていることにより、機械
的補強などが図られ、また、変形なども抑制されるの
で、一般的な取扱い易さや充電操作性など良好な、信頼
性の高い二次電池が提供される。According to the first and second aspects of the present invention, the secondary battery itself is provided with the charging circuit and the protection circuit, and the wiring board body is used as a constituent member, whereby mechanical reinforcement and the like are achieved. Further, since deformation and the like are also suppressed, a highly reliable secondary battery having good general easiness of handling and charge operability is provided.
【００２４】特に、請求項２の発明の場合は、充電回路
および保護回路の設置面を分離したことに伴って、両回
路機能の信頼性がさらに向上する。In particular, in the case of the second aspect of the invention, the reliability of both circuit functions is further improved by separating the installation surfaces of the charging circuit and the protection circuit.
【図１】第１実施例の二次電池の概略構成を示す断面
図。FIG. 1 is a sectional view showing a schematic configuration of a secondary battery according to a first embodiment.
【図２】第２実施例の二次電池の概略構成を示す断面
図。FIG. 2 is a sectional view showing a schematic configuration of a secondary battery according to a second embodiment.
【図３】薄型二次電池の概略構成例を示す断面図。FIG. 3 is a cross-sectional view showing a schematic configuration example of a thin secondary battery.
【図４】充電器の回路構成例を示す回路図。FIG. 4 is a circuit diagram showing a circuit configuration example of a charger.
１……ポリマ−電解質系 ２……正極 ３……負極 ４，５……シール用シート 6a，6b……過充電保護用パワー MOS FET 7a，7b，7c……電圧／電流検出用の抵抗 ８……基準電圧源 ９……第１の配線基板本体 ９′……第２の配線基板本体 10……充電回路 11……保護回路 12a， 12b， 12a′， 12b′……導体層（電極集電体） 13……封口材 1 …… Polymer-electrolyte system 2 …… Positive electrode 3 …… Negative electrode 4,5 …… Seal sheet 6a, 6b …… Power MOS FET for overcharge protection 7a, 7b, 7c …… Resistance for voltage / current detection 8 ...... Reference voltage source 9 ...... First wiring board body 9 '...... Second wiring board body 10 ...... Charging circuit 11 ...... Protection circuit 12a, 12b, 12a', 12b '...... Conductor layer (electrode collection Electric body) 13 ... Sealing material
Claims (2)
くともいずれか一方の回路付き第１の配線基板本体と、 前記第１の配線基板本体の他主面に形成された第１の導
電体層と、 前記第１の配線基板本体に対応する第２の配線基板本体
と、 前記第２の配線基板本体の一主面に形成された第２の導
電体層と、 前記第１の導電体層および第２の導電体層を対向する電
極集電体として、両配線基板本体面間に一体的に設けら
れ、かつ前記充電回路および保護回路に電気的に接続す
る薄型の二次電池とを備えたことを特徴とする充電回路
付き二次電池。1. A first wiring board main body with a circuit on at least one of a charging circuit and a protection circuit on one main surface, and a first conductor formed on the other main surface of the first wiring board main body. A layer, a second wiring board body corresponding to the first wiring board body, a second conductor layer formed on one main surface of the second wiring board body, and the first conductor A thin secondary battery that is integrally provided between both wiring board body surfaces and that is electrically connected to the charging circuit and the protection circuit by using the layer and the second conductor layer as opposing electrode current collectors. A secondary battery with a charging circuit, which is characterized by being equipped.
本体と、 前記第１の配線基板本体の他主面に形成された第１の導
電体層と、 一主面に保護回路付きの第２の配線基板本体と、 前記第２の配線基板本体の他主面に形成された第２の導
電体層と、 前記第１の導電体層および第２の導電体層を対向する電
極集電体として、両配線基板本体面間に一体的に設けら
れ、かつ前記充電回路および保護回路に電気的に接続す
る薄型の二次電池とを備えたことを特徴とする充電回路
付き二次電池。2. A first wiring board body having a charging circuit on one principal surface, a first conductor layer formed on the other principal surface of the first wiring board body, and a protection circuit on one principal surface. A second wiring board body with a mark, a second conductor layer formed on the other main surface of the second wiring board body, and the first conductor layer and the second conductor layer face each other. A battery with a charging circuit, comprising a thin secondary battery integrally provided between both wiring board body surfaces as an electrode current collector and electrically connected to the charging circuit and the protection circuit. Next battery.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8070410A JPH09259932A (en) | 1996-03-26 | 1996-03-26 | Secondary battery with charging circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8070410A JPH09259932A (en) | 1996-03-26 | 1996-03-26 | Secondary battery with charging circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH09259932A true JPH09259932A (en) | 1997-10-03 |
Family
ID=13430683
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP8070410A Pending JPH09259932A (en) | 1996-03-26 | 1996-03-26 | Secondary battery with charging circuit |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH09259932A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1330224C (en) * | 1998-05-28 | 2007-08-01 | 罗姆股份有限公司 | Circuit board of protective circuit for storage battery, protective circuit for storage battery, and storage battery pack |
| JP2009537068A (en) * | 2006-05-12 | 2009-10-22 | インフィニット パワー ソリューションズ， インコーポレイテッド | Thin film battery on integrated circuit or circuit board and method for manufacturing the same |
| JP2010518578A (en) * | 2007-02-09 | 2010-05-27 | シンベット・コーポレイション | Charging system and charging method |
| US9634296B2 (en) | 2002-08-09 | 2017-04-25 | Sapurast Research Llc | Thin film battery on an integrated circuit or circuit board and method thereof |
| US9793523B2 (en) | 2002-08-09 | 2017-10-17 | Sapurast Research Llc | Electrochemical apparatus with barrier layer protected substrate |
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| JPS6193562A (en) * | 1984-10-15 | 1986-05-12 | Matsushita Electric Ind Co Ltd | Hybrid battery |
| JPS61147476A (en) * | 1984-12-19 | 1986-07-05 | Toshiba Battery Co Ltd | Cell system |
| JPS61148772A (en) * | 1984-12-21 | 1986-07-07 | Matsushita Electric Ind Co Ltd | Energy storage device |
| JPS61186271U (en) * | 1985-05-10 | 1986-11-20 | ||
| JPH04162345A (en) * | 1990-10-26 | 1992-06-05 | Shin Kobe Electric Mach Co Ltd | Solid electrolyte battery |
| JPH07220755A (en) * | 1994-02-07 | 1995-08-18 | Tdk Corp | Layer built lithium secondary battery |
-
1996
- 1996-03-26 JP JP8070410A patent/JPH09259932A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6193562A (en) * | 1984-10-15 | 1986-05-12 | Matsushita Electric Ind Co Ltd | Hybrid battery |
| JPS61147476A (en) * | 1984-12-19 | 1986-07-05 | Toshiba Battery Co Ltd | Cell system |
| JPS61148772A (en) * | 1984-12-21 | 1986-07-07 | Matsushita Electric Ind Co Ltd | Energy storage device |
| JPS61186271U (en) * | 1985-05-10 | 1986-11-20 | ||
| JPH04162345A (en) * | 1990-10-26 | 1992-06-05 | Shin Kobe Electric Mach Co Ltd | Solid electrolyte battery |
| JPH07220755A (en) * | 1994-02-07 | 1995-08-18 | Tdk Corp | Layer built lithium secondary battery |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1330224C (en) * | 1998-05-28 | 2007-08-01 | 罗姆股份有限公司 | Circuit board of protective circuit for storage battery, protective circuit for storage battery, and storage battery pack |
| US9634296B2 (en) | 2002-08-09 | 2017-04-25 | Sapurast Research Llc | Thin film battery on an integrated circuit or circuit board and method thereof |
| US9793523B2 (en) | 2002-08-09 | 2017-10-17 | Sapurast Research Llc | Electrochemical apparatus with barrier layer protected substrate |
| JP2009537068A (en) * | 2006-05-12 | 2009-10-22 | インフィニット パワー ソリューションズ， インコーポレイテッド | Thin film battery on integrated circuit or circuit board and method for manufacturing the same |
| JP2010518578A (en) * | 2007-02-09 | 2010-05-27 | シンベット・コーポレイション | Charging system and charging method |
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