JP2003317702A - Thin battery - Google Patents
Thin batteryInfo
- Publication number
- JP2003317702A JP2003317702A JP2002120583A JP2002120583A JP2003317702A JP 2003317702 A JP2003317702 A JP 2003317702A JP 2002120583 A JP2002120583 A JP 2002120583A JP 2002120583 A JP2002120583 A JP 2002120583A JP 2003317702 A JP2003317702 A JP 2003317702A
- Authority
- JP
- Japan
- Prior art keywords
- battery
- protection circuit
- section
- package
- electrode
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 230000002093 peripheral effect Effects 0.000 claims description 11
- 229910052751 metal Inorganic materials 0.000 claims description 10
- 239000002184 metal Substances 0.000 claims description 10
- 238000007789 sealing Methods 0.000 claims description 9
- 239000008151 electrolyte solution Substances 0.000 claims description 7
- 239000000758 substrate Substances 0.000 claims description 7
- 238000005304 joining Methods 0.000 claims description 3
- 238000005192 partition Methods 0.000 claims description 2
- 238000004519 manufacturing process Methods 0.000 abstract description 3
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 8
- 239000000463 material Substances 0.000 description 6
- 239000011347 resin Substances 0.000 description 5
- 229920005989 resin Polymers 0.000 description 5
- 229910052759 nickel Inorganic materials 0.000 description 4
- 238000007599 discharging Methods 0.000 description 3
- 239000010935 stainless steel Substances 0.000 description 3
- 229910001220 stainless steel Inorganic materials 0.000 description 3
- 238000003466 welding Methods 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 description 2
- 229910000861 Mg alloy Inorganic materials 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 2
- 239000011149 active material Substances 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 230000003247 decreasing effect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000003792 electrolyte Substances 0.000 description 2
- 229910001416 lithium ion Inorganic materials 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000002265 prevention Effects 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 229910000838 Al alloy Inorganic materials 0.000 description 1
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- KMTRUDSVKNLOMY-UHFFFAOYSA-N Ethylene carbonate Chemical compound O=C1OCCO1 KMTRUDSVKNLOMY-UHFFFAOYSA-N 0.000 description 1
- 229910012851 LiCoO 2 Inorganic materials 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 239000003125 aqueous solvent Substances 0.000 description 1
- 229910002804 graphite Inorganic materials 0.000 description 1
- 239000010439 graphite Substances 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 239000002648 laminated material Substances 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- WABPQHHGFIMREM-UHFFFAOYSA-N lead(0) Chemical compound [Pb] WABPQHHGFIMREM-UHFFFAOYSA-N 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 230000013011 mating Effects 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- RUOJZAUFBMNUDX-UHFFFAOYSA-N propylene carbonate Chemical compound CC1COC(=O)O1 RUOJZAUFBMNUDX-UHFFFAOYSA-N 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 238000005549 size reduction Methods 0.000 description 1
- 239000013585 weight reducing agent Substances 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
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
-
- 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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
Landscapes
- Sealing Battery Cases Or Jackets (AREA)
- Secondary Cells (AREA)
- Connection Of Batteries Or Terminals (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、携帯情報端末や携
帯電話などの各種小型電子機器の電源として使用するの
に適した薄型電池であって、特に保護回路を一体に備え
たものに関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a thin battery suitable for use as a power source for various small electronic devices such as portable information terminals and mobile phones, and more particularly to a thin battery integrally provided with a protection circuit.
【０００２】[0002]
【従来の技術】通常、薄さが要求される小型電子機器に
あっては、厚みの比較的薄いリチウムイオン電池等の二
次電池が使用される場合が多い。この種の二次電池に
は、深絞り加工による薄型矩形板状の金属缶を使用し、
これの開口部に金属蓋を嵌合して溶接する構造としたも
のや、弁当箱の様な浅絞りの金属缶を使用し、これの開
口部に金属蓋を嵌合して溶接する構造としたものがある
（例えば、特開平１１−１８５８２０号公報参照）。2. Description of the Related Art Usually, in a small electronic device which is required to be thin, a secondary battery such as a lithium ion battery having a relatively small thickness is often used. For this type of secondary battery, use a thin rectangular plate metal can by deep drawing,
A structure in which a metal lid is fitted to the opening of this and welded, or a metal can of shallow drawing such as a lunch box is used, and a metal lid is fitted into the opening and welded There is one (see, for example, Japanese Patent Laid-Open No. 11-185820).
【０００３】更にこれらの薄型電池を用いるに当たって
は、過充電や過放電を防止したり大電流が流れることを
防止するために保護回路を備える必要があるが、従来の
薄型電池にあっては、電池缶の形態が単純な直方体形状
であったため、保護回路を取り付けるためのスペースや
ベースを別途用意することにより対応することが一般的
であった。Further, in using these thin type batteries, it is necessary to provide a protection circuit in order to prevent overcharging and overdischarging and to prevent a large current from flowing, but in the conventional thin type batteries, Since the battery can has a simple rectangular parallelepiped shape, it is common to provide a space for mounting the protection circuit and a base separately.
【０００４】[0004]
【発明が解決しようとする課題】しかしながら、携帯用
電子機器に対する軽量化および小型化に対する要望は更
に強まっている。本発明はかかる要望に基づいてなされ
たものであって、電池缶の内部に保護回路も一体に収納
することにより、電池全体のサイズを更に小型化できる
と同時に、構造の簡略化が図られて製造コストの低廉化
を可能とする薄型電池を提供することを目的とする。However, there is an increasing demand for weight reduction and size reduction of portable electronic devices. The present invention has been made based on such a demand, and by integrally housing the protection circuit inside the battery can, the size of the entire battery can be further reduced, and at the same time, the structure can be simplified. It is an object of the present invention to provide a thin battery capable of reducing manufacturing cost.
【０００５】[0005]
【課題を解決するための手段】本発明にかかる薄型電池
２０は、図１にその概略的に構成を示す如く、１つのパ
ッケージ１０内に、電極体と電解液からなる電池部１６
と、この電池部１６に対する電気的な保護を可能とする
保護回路部１８とを一体に収納している。A thin battery 20 according to the present invention has a battery portion 16 composed of an electrode body and an electrolytic solution in one package 10 as shown in the schematic structure of FIG.
And a protection circuit section 18 that enables electrical protection of the battery section 16 are integrally housed.
【０００６】更に、パッケージ１０内で電池部１６と保
護回路部１８とを電気的に接続し、且つ、物理的に分離
して配置するとともに、パッケージ１０の周面１１上
に、保護回路部１８を介した電池部１６に対する電流の
入出力を可能とする電極部２２を備えたことを特徴とす
る。Further, the battery section 16 and the protection circuit section 18 are electrically connected in the package 10 and are physically separated from each other, and the protection circuit section 18 is provided on the peripheral surface 11 of the package 10. It is characterized in that it is provided with an electrode portion 22 that enables the input and output of current to and from the battery portion 16 via the.
【０００７】保護回路部１８は、図２ないし図４の様
に、電池部１６に対する過充電および過放電を防止する
ためのものであって、基板２４の一方の面上に回路部品
２６を配置する一方、他方の面に電極２８を設けるとと
もに、電池缶４４の様な所定パッケージの周面に設けた
開口３０を介して基板２４上の電極２８を外部に露出す
ることにより電極部２２を構成している。As shown in FIGS. 2 to 4, the protection circuit section 18 is for preventing overcharge and overdischarge of the battery section 16, and the circuit component 26 is disposed on one surface of the substrate 24. On the other hand, the electrode portion 22 is formed by providing the electrode 28 on the other surface and exposing the electrode 28 on the substrate 24 to the outside through the opening 30 provided on the peripheral surface of the predetermined package such as the battery can 44. is doing.
【０００８】電池部１６と保護回路部１８とは、図５や
図６（ａ）の様に、保護回路部１８の周囲を包囲した封
止部材３２で物理的に分離することも可能であるし、図
６（ｂ）の様にパッケージ１０の内部に形成された２つ
の区画３４ａ・３４ｂにより物理的に分離することもで
きる。The battery section 16 and the protection circuit section 18 can be physically separated by a sealing member 32 that surrounds the periphery of the protection circuit section 18, as shown in FIGS. 5 and 6A. However, it is also possible to physically separate the two compartments 34a and 34b formed inside the package 10 as shown in FIG.
【０００９】またパッケージ１０は、図３および４で示
す様に、金属薄板を加工して中空の矩形扁平状に構成し
た電池缶４４で構成することが可能であって、更にその
電池缶４４は、浅い凹部３６を有する缶本体３８と、そ
の缶本体３８における凹部３６の開口縁４０を閉じる平
面状の閉止板４２とを、一体に接合して構成することが
好ましい。As shown in FIGS. 3 and 4, the package 10 can be constituted by a battery can 44 formed by processing a thin metal plate into a hollow rectangular flat shape. It is preferable that the can main body 38 having the shallow recess 36 and the planar closing plate 42 that closes the opening edge 40 of the recess 36 in the can main body 38 are integrally joined.
【００１０】[0010]
【発明の実施の形態】以下本発明にかかる薄型電池２０
を、図２〜図５に示す如く、角型のリチウムイオン二次
電池に実施した一例に基づいて説明するが、電池に対す
る保護回路を必要とする各種二次電池に実施できること
は勿論である。DETAILED DESCRIPTION OF THE INVENTION Thin battery 20 according to the present invention.
2 to 5 will be described based on an example implemented in a prismatic lithium-ion secondary battery, but it goes without saying that it can be implemented in various secondary batteries that require a battery protection circuit.
【００１１】薄型電池２０は、中空に形成された扁平な
矩形状の電池缶４４内に、電極体１２と電解液１４とか
らなる電池部１６と、この電池部１６に対して入出力す
る電流を制限する保護回路部１８とを一体に収納される
ことにより、矩形薄板状に構成されている。ここで電池
缶４４は、凹部３６を有する缶本体３８と、この缶本体
３８における凹部３６の開口縁４０を密封する閉止板４
２とからなる。The thin battery 20 includes a battery portion 16 composed of the electrode body 12 and the electrolytic solution 14 in a flat rectangular battery can 44 formed in the hollow, and an electric current input to and output from the battery portion 16. The protection circuit section 18 for limiting the above is integrally housed to form a rectangular thin plate. Here, the battery can 44 includes a can body 38 having a recess 36 and a closing plate 4 for sealing an opening edge 40 of the recess 36 in the can body 38.
It consists of 2.
【００１２】缶本体３８と閉止板４２は共に、鉄板、ニ
ッケル板、アルミニウム板、これらの金属の合金板、マ
グネシウム合金板、ステンレス鋼板、ニッケルメッキを
施した圧延鋼板、ニッケルメッキを施したステンレス鋼
板など、その厚さが例えば０．１５ｍｍ程度の薄板金属
板で形成される。Both the can body 38 and the closing plate 42 are an iron plate, a nickel plate, an aluminum plate, an alloy plate of these metals, a magnesium alloy plate, a stainless steel plate, a nickel-plated rolled steel plate, a nickel-plated stainless steel plate. Etc. is formed of a thin metal plate having a thickness of, for example, about 0.15 mm.
【００１３】なお、強度および軽量である点を重視する
場合には、高強度材料でしかも軽量な、Ｈｖ（ビッカー
ス硬さ）が７０以上のアルミニウム合金やマグネシウム
合金を使用するのが好ましい。また、電解液に対する耐
腐食性を重視する場合には、ニッケルメッキを施した圧
延鋼板やステンレス鋼版を使用するのがよい。When importance is attached to strength and light weight, it is preferable to use an aluminum alloy or magnesium alloy having a high strength Vv (hardness of Vickers) of 70 or more, which is a high strength material and is lightweight. Further, when importance is attached to the corrosion resistance to the electrolytic solution, it is preferable to use a rolled steel plate or a stainless steel plate plated with nickel.
【００１４】更に閉止板４２については、缶本体３８と
の接合面側、即ち電池缶４４の内面側には缶本体３８と
同じ材質のものを使用し、反対側の面、即ち電池缶４４
の外周側には、強度および軽さの点で優れる積層材であ
るクラッド材（例えば、ニッケルを積層してなるニッケ
ルクラッド材）を使用することもできる。As for the closing plate 42, the same material as that of the can main body 38 is used on the side of the joint surface with the can main body 38, that is, the inner surface of the battery can 44, and the opposite surface, that is, the battery can 44.
A clad material (for example, a nickel clad material obtained by laminating nickel) which is a laminated material excellent in strength and lightness can be used on the outer peripheral side of the.
【００１５】缶本体３８は、一枚の金属板を浅絞り加工
することにより、矩形状の底面４８と細帯状の側面５０
とを備えた皿状に形成するとともに、その開口端の周縁
縁４０には、その全周に亘って平坦なフランジ部５２
が、略同幅の細幅状に形成されている。なお側面５０
は、底面４８に対して直角に構成することが可能である
が、本実施例にあっては更に数十度外側に傾斜させてい
る。The can body 38 has a rectangular bottom surface 48 and a strip-shaped side surface 50 formed by subjecting a metal plate to shallow drawing.
And a flat flange portion 52 over the entire circumference of the peripheral edge 40 at the opening end thereof.
Are formed in a narrow width shape having substantially the same width. Side 50
Can be formed at a right angle to the bottom surface 48, but in the present embodiment, it is further inclined outward by several tens of degrees.
【００１６】閉止板４２は、プレス打ち抜き品からなる
一枚の平坦な金属板で構成されており、その周縁の形状
およびサイズが、缶本体３８におけるフランジ部５２の
外周縁の形状およびサイズと同一に形成されている。こ
の閉止板４２は、フランジ部５２に接合することによっ
て缶本体３８と一体化され、両者の接合面からの液漏れ
を防止している。The closing plate 42 is composed of a single flat metal plate made of a stamped product, and the shape and size of its peripheral edge are the same as the shape and size of the outer peripheral edge of the flange portion 52 of the can body 38. Is formed in. The closing plate 42 is integrated with the can main body 38 by being joined to the flange portion 52 to prevent liquid leakage from the joint surface between the two.
【００１７】缶本体３８に対する閉止板４２の接合方法
としては、レーザー溶接あるいは樹脂を用いた熱溶着が
使用できる。ここで前者の場合は、缶本体３８のフラン
ジ部５２に閉止板４２を密着させた状態で、これらの周
縁の近傍あるいはその合わせ面の外周部分を全周に亘っ
てレーザー溶接することにより、両者を接合一体化す
る。後者の場合は、フランジ部５２の表面あるいはこれ
と合わされる閉止板４２の周縁部分に接着剤としての樹
脂を塗り、この樹脂を熱で一時的に溶かして熱溶着する
ことにより、両者を接合する。その他、缶本体３８と閉
止板４２とを密着状態で接合できるものであれば、接合
方法が限定されるものでないことは勿論である。As a method of joining the closing plate 42 to the can body 38, laser welding or heat welding using resin can be used. Here, in the former case, in the state where the closing plate 42 is in close contact with the flange portion 52 of the can main body 38, laser welding is performed over the entire circumference in the vicinity of these peripheral edges or the outer peripheral portion of the mating surface thereof. Join and integrate. In the latter case, a resin as an adhesive is applied to the surface of the flange portion 52 or the peripheral portion of the closing plate 42 which is fitted to the surface of the flange portion 52, and the resin is temporarily melted by heat and heat-welded to bond the both. . Of course, the joining method is not limited as long as the can body 38 and the closing plate 42 can be joined in a close contact state.
【００１８】本発明は上記した構成にあって更に、電池
缶４４の内部に、電池部１６と保護回路部１８とを一体
に収納する構造にその特徴を有する。ここで電池部１６
を構成する電解液１４としては、例えばプロピレンカー
ボネートやエチレンカーボネートなどの非水溶媒に、Ｌ
ｉＢＦ４などの電解質を溶解させた非水電解液が使用さ
れる。The present invention has the above-described structure, and is further characterized in a structure in which the battery portion 16 and the protection circuit portion 18 are integrally housed inside the battery can 44. Here, the battery unit 16
As the electrolyte solution 14 that constitutes L, for example, a non-aqueous solvent such as propylene carbonate or ethylene carbonate, L
A non-aqueous electrolytic solution in which an electrolyte such as iBF 4 is dissolved is used.
【００１９】また電極体１２は、例えばＬｉＣｏＯ２を
活物質とするシート状の正極と、例えば黒鉛を活物質と
するシート状の負極とを、セパレータを間にして渦巻き
状に巻いたのち、全体を缶本体３８の凹部３６に収納で
きるように押しつぶして扁平状に構成している。更に正
極と負極からは各々導線５４・５４を延ばし、保護回路
部１８に接続している。Further, the electrode body 12 is formed by spirally winding a sheet-shaped positive electrode containing LiCoO 2 as an active material and a sheet-shaped negative electrode containing graphite as an active material, with a separator interposed between them. Is flattened so that it can be stored in the recess 36 of the can body 38. Further, conducting wires 54, 54 are extended from the positive electrode and the negative electrode, respectively, and are connected to the protection circuit section 18.
【００２０】保護回路部１８は、缶本体３８の凹部３６
における短辺長さより稍短い細幅状に形成したプリント
配線式の基板２４における一方の面上にチップ状の回路
部品２６を使用して電子回路を構成する一方、基板２４
の他方の面に矩形状の電極２８が形成されたものであ
る。そして、電極２８を介して各種の電子機器と接続さ
れ、二次電池の過放電あるいは過充電等の充放電時に発
生する恐れのある事故を未然に防止するために使用され
る。The protection circuit section 18 is formed in the recess 36 of the can body 38.
The electronic circuit is formed by using the chip-shaped circuit component 26 on one surface of the printed wiring board 24 formed in a narrow width slightly shorter than the short side length of the board 24.
A rectangular electrode 28 is formed on the other surface of the. Then, it is connected to various electronic devices via the electrode 28, and is used to prevent accidents that may occur during charging / discharging such as over-discharging or overcharging of the secondary battery.
【００２１】保護回路部１８を構成する電子回路は、二
次電池の電池電圧を検出する手段と、充電中に電圧検出
手段により検出された電池電圧が上限電圧を上回ると充
電電流を遮断する過充電防止手段と、放電中に電池電圧
が下限値を下回ると放電電流を遮断する過放電防止手段
と、充電あるいは放電時に設定値を超える電流が流れる
と溶断する電流ヒューズとから構成される。しかしなが
ら、その他の保護手段を備え、あるいは一部の保護手段
を省略するなど、その構成を適宜に増減して実施でき
る。The electronic circuit that constitutes the protection circuit section 18 includes means for detecting the battery voltage of the secondary battery and an overcurrent interrupting the charging current when the battery voltage detected by the voltage detecting means during charging exceeds the upper limit voltage. It comprises charge prevention means, over-discharge prevention means that interrupts the discharge current when the battery voltage falls below the lower limit value during discharge, and a current fuse that blows when a current exceeding a set value flows during charging or discharging. However, the configuration can be appropriately increased or decreased by providing other protection means or omitting some protection means.
【００２２】また基板２４上に形成される電極２８は、
前記した電子回路と接続されて電池電圧を電池缶４４の
外部に導出するためのものであって、本実施例にあって
は、正電極および負電極に加え、制御用や検査用の電極
など合計で４つの矩形状の電極２８を備えているが、電
極２８の数は適宜増減して実施できることは勿論であ
る。The electrode 28 formed on the substrate 24 is
In order to lead the battery voltage to the outside of the battery can 44 by being connected to the electronic circuit described above, in the present embodiment, in addition to the positive electrode and the negative electrode, electrodes for control and inspection, etc. Although a total of four rectangular electrodes 28 are provided, it goes without saying that the number of electrodes 28 can be increased or decreased as appropriate.
【００２３】本発明は上記構成にあって更に、保護回路
部１８の電池缶４４内における取り付け構造にその特徴
を有する。すなわち、缶本体３８の凹部３６における一
方の短辺に寄せて電極体１２を配置する一方、他方の短
辺の近傍に、保護回路部１８における基板２４の面積よ
り稍広い空間を設け、電極２８を凹部３６の底面４８に
向けて保護回路部１８を収納する。The present invention has the above-mentioned structure, and is further characterized in the mounting structure of the protection circuit section 18 in the battery can 44. That is, the electrode body 12 is arranged close to one short side of the concave portion 36 of the can main body 38, while a space slightly larger than the area of the substrate 24 in the protection circuit section 18 is provided in the vicinity of the other short side, and the electrode 28 is provided. The protective circuit portion 18 is housed in the direction toward the bottom surface 48 of the recess 36.
【００２４】一方、保護回路部１８に備えた４つの電極
２８が当接する缶本体３８の底面４８上には、４つの電
極２８の配設位置と一致するが、その大きさが稍小さい
開口３０が形成され、その開口３０との絶縁状態を維持
しながら閉じる様にして保護回路部１８の電極２８が配
設される。更に、保護回路部１８の周囲を、絶縁性ある
いは耐腐食性を有する樹脂材からなる封止部材３２で密
封することにより、電解液１４から保護回路部１８を守
っている。On the other hand, on the bottom surface 48 of the can main body 38 with which the four electrodes 28 provided in the protection circuit section 18 abut, the opening 30 which is located at the same position as the four electrodes 28 but whose size is slightly small. Is formed, and the electrode 28 of the protection circuit portion 18 is arranged so as to be closed while maintaining the insulating state from the opening 30. Further, the periphery of the protection circuit portion 18 is sealed with a sealing member 32 made of a resin material having an insulating property or a corrosion resistance to protect the protection circuit portion 18 from the electrolytic solution 14.
【００２５】図６（ａ）は、保護回路部１８の取り付け
構造の他の実施例であって、缶本体３８における凹部３
６の底面４８側に開口３０を設けて電極２８を外部に露
出させるのに代えて、傾斜する側面５０上に開口３０を
設けている。かかる構成にすることにより、凹部側面５
０の内側に発生するデッドスペースを有効利用し、保護
回路部１８を収納する空間を縮小することができ、同一
電池容量であれば、電池全体の構成をよりコンパクトに
設計できる。FIG. 6A shows another embodiment of the mounting structure of the protection circuit section 18, which is the recess 3 in the can body 38.
Instead of exposing the electrode 28 to the outside by providing the opening 30 on the bottom surface 48 side of 6, the opening 30 is provided on the inclined side surface 50. With such a configuration, the side surface 5 of the concave portion
By effectively utilizing the dead space generated inside 0, the space for accommodating the protection circuit unit 18 can be reduced, and if the battery capacity is the same, the overall configuration of the battery can be designed more compact.
【００２６】図６（ｂ）は更に他の実施例であって、上
記した実施例にあっては封止部材３２による密封で電池
部１６と保護回路部１８とを物理的に分離することが行
われているが、本実施例にあっては缶本体３８を屈曲し
て隔壁５６を一体に形成し、電池缶４４の内部に、電池
部１６が収納される区画３４ａと保護回路部１８が収納
される区画３４ｂの２つの区画３４に分離したことを特
徴とする。かかる構成により、樹脂材による保護回路部
１８の周囲における封止が不要となるために、封止を嫌
う回路部品の使用も可能となるとともに、電池部１６と
保護回路部１８とがより完全に分離され、安定した動作
を可能とする。FIG. 6B shows still another embodiment. In the above-mentioned embodiment, the battery section 16 and the protection circuit section 18 can be physically separated by sealing with the sealing member 32. However, in the present embodiment, the can main body 38 is bent to integrally form the partition wall 56, and the compartment 34a for accommodating the battery portion 16 and the protection circuit portion 18 are provided inside the battery can 44. It is characterized in that it is separated into two compartments 34 of a compartment 34b to be stored. With such a configuration, sealing around the protection circuit unit 18 with a resin material is not necessary, so that it is possible to use a circuit component that does not like sealing, and the battery unit 16 and the protection circuit unit 18 are more completely Separated to enable stable operation.
【００２７】なお、保護回路部１８の電極２８を露出さ
せる開口３０は、凹部３６の底面４８側や側面５０上に
設けるほかに、閉止板４２上に設けるなど、その形成位
置は限定されるものではない。また、電池缶４４に開口
３０を設けて保護回路４６の基板２４上に設けた電極２
８を電池缶４４の外部に露出させる外に、電池缶４４を
貫通させて一部が外部に露出する電極を設け、その電極
と電池缶４４内部の保護回路４６とを電気的に接続させ
ることや、電池缶４４それ自体を電極として利用するこ
とも可能である。The opening 30 for exposing the electrode 28 of the protection circuit section 18 is provided on the bottom surface 48 side and the side surface 50 of the recess 36, and also on the closing plate 42, so that its forming position is limited. is not. In addition, the electrode 2 provided on the substrate 24 of the protection circuit 46 by providing the opening 30 in the battery can 44.
In addition to exposing 8 to the outside of the battery can 44, an electrode that penetrates the battery can 44 and is partially exposed to the outside is provided, and the electrode and the protection circuit 46 inside the battery can 44 are electrically connected. Alternatively, the battery can 44 itself can be used as an electrode.
【００２８】[0028]
【発明の効果】本発明は上記の如く、電池缶４４の内部
に電池部１６に加えて保護回路部１８も一体に収納する
ことにより、電池全体のサイズを更に小型化できると同
時に、構造の簡略化が図られて、故障発生の抑制および
製造コストの低廉化を可能とする。As described above, according to the present invention, the size of the entire battery can be further reduced by accommodating the protection circuit 18 in addition to the battery 16 inside the battery can 44, and at the same time, the structure of the battery can be reduced. The simplification is achieved, and it is possible to suppress the occurrence of failures and reduce the manufacturing cost.
【図１】本発明の基本的な構成を示す概略図である。FIG. 1 is a schematic diagram showing a basic configuration of the present invention.
【図２】本発明を実施した一例を示す分解斜視図であ
る。FIG. 2 is an exploded perspective view showing an example in which the present invention is implemented.
【図３】図２に示す薄型電池の組み立て状態を示す上方
側から見た斜視図である。FIG. 3 is a perspective view showing an assembled state of the thin battery shown in FIG. 2 as viewed from above.
【図４】図２に示す薄型電池の組み立て状態を示す下方
側から見た斜視図である。4 is a perspective view showing the assembled state of the thin battery shown in FIG. 2 as viewed from the lower side.
【図５】図４におけるＶ−Ｖ線に沿う断面状態を示す説
明図である。5 is an explanatory diagram showing a cross-sectional state along the line VV in FIG.
【図６】他の実施例を示す図５に類似した説明図であ
る。FIG. 6 is an explanatory view similar to FIG. 5 showing another embodiment.
１０ パッケージ １１ パッケージ周面 １２ 電極体 １４ 電解液 １６ 電池部 １８ 保護回路部 ２０ 薄型電池 ２２ 電極部 ２４ 基板 ２６ 回路部品 ２８ 電極 ３０ 開口 ３２ 封止部材 ３４ 区画 ３６ 凹部 ３８ 缶本体 ４０ 開口縁 ４２ 閉止板 ４４ 電池缶 ４８ 凹部底面 ５０ 凹部側面 ５２ フランジ部 ５４ 導線 ５６ 隔壁 10 packages 11 Package surface 12 electrode body 14 Electrolyte 16 Battery part 18 Protection circuit 20 thin battery 22 Electrode part 24 substrates 26 Circuit parts 28 electrodes 30 openings 32 sealing member 34 divisions 36 recess 38 can body 40 Opening edge 42 Stop plate 44 battery cans 48 Bottom of recess 50 Side of recess 52 Flange 54 lead wire 56 bulkhead
───────────────────────────────────────────────────── フロントページの続き (72)発明者 丸山 浩史 大阪府茨木市丑寅１丁目１番88号 日立マ クセル株式会社内 (72)発明者 富田 浩史 大阪府茨木市丑寅１丁目１番88号 日立マ クセル株式会社内 Ｆターム(参考） 5H011 AA13 BB03 EE04 FF04 GG05 5H022 AA04 AA09 CC02 CC08 CC12 KK01 5H029 AK03 AL07 BJ04 DJ05 ─────────────────────────────────────────────────── ─── Continued front page (72) Inventor Hiroshi Maruyama Hitachi Ma, 1-88, Torora, Ibaraki City, Osaka Prefecture Within Kucsel Co., Ltd. (72) Inventor Hiroshi Tomita Hitachi Ma, 1-88, Torora, Ibaraki City, Osaka Prefecture Within Kucsel Co., Ltd. F-term (reference) 5H011 AA13 BB03 EE04 FF04 GG05 5H022 AA04 AA09 CC02 CC08 CC12 KK01 5H029 AK03 AL07 BJ04 DJ05
Claims (5)
からなる電池部と、該電池部に対する電気的な保護を可
能とする保護回路部とを一体に収納した薄型電池であっ
て、 前記パッケージ内で前記電池部と保護回路部とを電気的
に接続し、且つ、物理的に分離して配置するとともに、 パッケージの周面に、保護回路部を介した電池部に対す
る電流の入出力を可能とする電極部を備えたことを特徴
とする薄型電池。1. A thin battery in which a battery part made of an electrode body and an electrolytic solution and a protection circuit part capable of electrically protecting the battery part are integrally housed in one package, wherein: The battery section and the protection circuit section are electrically connected in the package, and physically separated from each other, and the input / output of current to / from the battery section through the protection circuit section is performed on the peripheral surface of the package. A thin battery characterized in that it is provided with an electrode section that enables it.
過充電および過放電を防止するためのものであって、 基板の一方の面上に回路部品を配置する一方、他方の面
に電極を設けるとともに、 前記パッケージの周面に設けた開口を介して該電極を外
部に露出することにより、前記電極部を構成している請
求項１記載の薄型電池。2. The protection circuit section is for preventing overcharging and overdischarging of the battery section, in which circuit components are arranged on one surface of the substrate and electrodes are arranged on the other surface. The thin battery according to claim 1, wherein the electrode portion is configured by providing the electrode and exposing the electrode to the outside through an opening provided on a peripheral surface of the package.
の周囲を包囲した封止部材で物理的に分離されている請
求項２記載の薄型電池。3. The thin battery according to claim 2, wherein the battery section and the protection circuit section are physically separated by a sealing member that surrounds the periphery of the protection circuit section.
ジの内部に形成された区画により物理的に分離されてい
る請求項２記載の薄型電池。4. The thin battery according to claim 2, wherein the battery section and the protection circuit section are physically separated by a partition formed inside the package.
中空の矩形扁平状に構成した電池缶であって、 該電池缶は、凹部を有する缶本体と、該缶本体における
凹部の開口縁を閉じる平面状の閉止板とを、一体に接合
して構成される請求項１〜４の何れかに記載の薄型電
池。5. The package is a battery can formed by processing a thin metal plate into a hollow rectangular flat shape, wherein the battery can has a can body having a recess and an opening edge of the recess in the can body. The thin battery according to any one of claims 1 to 4, which is configured by integrally joining a closing flat plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2002120583A JP4367744B2 (en) | 2002-04-23 | 2002-04-23 | Thin battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2002120583A JP4367744B2 (en) | 2002-04-23 | 2002-04-23 | Thin battery |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2003317702A true JP2003317702A (en) | 2003-11-07 |
| JP4367744B2 JP4367744B2 (en) | 2009-11-18 |
Family
ID=29536767
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2002120583A Expired - Fee Related JP4367744B2 (en) | 2002-04-23 | 2002-04-23 | Thin battery |
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| Country | Link |
|---|---|
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100695950B1 (en) | 2005-06-22 | 2007-03-15 | 넥스콘 테크놀러지 주식회사 | Inner Pack Structure for Portable Equipment |
| JP2015130347A (en) * | 2012-03-15 | 2015-07-16 | 株式会社東芝 | lithium ion secondary battery |
| WO2015160112A1 (en) * | 2014-04-17 | 2015-10-22 | 주식회사 아이티엠반도체 | Polymer battery cell and electronic device comprising same |
-
2002
- 2002-04-23 JP JP2002120583A patent/JP4367744B2/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100695950B1 (en) | 2005-06-22 | 2007-03-15 | 넥스콘 테크놀러지 주식회사 | Inner Pack Structure for Portable Equipment |
| JP2015130347A (en) * | 2012-03-15 | 2015-07-16 | 株式会社東芝 | lithium ion secondary battery |
| US9537184B2 (en) | 2012-03-15 | 2017-01-03 | Kabushiki Kaisha Toshiba | Lithium ion secondary battery |
| WO2015160112A1 (en) * | 2014-04-17 | 2015-10-22 | 주식회사 아이티엠반도체 | Polymer battery cell and electronic device comprising same |
| KR20150120155A (en) * | 2014-04-17 | 2015-10-27 | 주식회사 아이티엠반도체 | Polymer battery cell and electronic device including the same |
| KR101595498B1 (en) | 2014-04-17 | 2016-02-18 | 주식회사 아이티엠반도체 | Polymer battery cell and electronic device including the same |
Also Published As
| Publication number | Publication date |
|---|---|
| JP4367744B2 (en) | 2009-11-18 |
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