JP2005085543A - Thin battery pack - Google Patents

Thin battery pack Download PDF

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Publication number
JP2005085543A
JP2005085543A JP2003314515A JP2003314515A JP2005085543A JP 2005085543 A JP2005085543 A JP 2005085543A JP 2003314515 A JP2003314515 A JP 2003314515A JP 2003314515 A JP2003314515 A JP 2003314515A JP 2005085543 A JP2005085543 A JP 2005085543A
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thin battery
metal plate
battery pack
insulating frame
thin
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JP2003314515A
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Hideyo Morita
秀世 森田
Yasuhiro Ono
尉浩 大野
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Sanyo Electric Co Ltd
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Sanyo Electric Co Ltd
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Priority to JP2003314515A priority Critical patent/JP2005085543A/en
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    • 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

<P>PROBLEM TO BE SOLVED: To provide a thin battery pack capable of enhancing strength of both faces of a thin film battery while thinning the whole by covering the both faces by a metal plate, and capable of efficiently preventing a metal plate from being deformed by an impact by dropping or the like. <P>SOLUTION: This thin battery pack is equipped with the thin battery 1, an insulating frame body 4 made of a plastic and disposed along the outer peripheral rim of the thin battery 1, and the metal plate 5 to cover both faces of the insulating frame body 4 and the thin battery 1. The insulating frame body 4 has a structure formed by connecting the both end parts of a pair of longitudinal frames 4A positioned on both sides of the thin battery 1 by a lateral frame 4B, and is provided with a protruding part 14 protruding to the further outside than the surface of the metal plate 5. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

本発明は、ポリマー電池等のラミネート電池や外装缶を金属ケースとする薄型電池を内蔵する薄型バッテリパックに関する。   The present invention relates to a thin battery pack including a laminated battery such as a polymer battery or a thin battery having an outer can as a metal case.

非常に薄くできるラミネート電池としてポリマー電池が開発されている。このラミネート電池は、電極の両面に外装フィルムを積層し、両面の外装フィルムを電極の周縁で気密に密着して製作される。この構造のラミネート電池は、金属製の外装缶に電極を挿入している電池に比較すると、薄くて大きくできる特長がある。しかしながら、ラミネート電池は、金属製の外装缶がないための欠点もある。外装フィルムの強度が金属缶に比較すると弱いので、表面に損傷を受けやすいことである。この弊害を解消するために、ラミネート電池を外装ケースに入れている薄型バッテリパックが開発されている（特許文献１参照）。この公報に記載される薄型バッテリパックは、図１と図２に示すように、上下ケース２２にラミネート電池２１を収納している。上下ケース２２は、プラスチック枠２３に金属板２４をインサートして製作している。
特開平１１−１１１２５０号公報 Polymer batteries have been developed as laminate batteries that can be made very thin. This laminate battery is manufactured by laminating an exterior film on both surfaces of an electrode and hermetically adhering the exterior films on both surfaces at the periphery of the electrode. Compared to a battery in which an electrode is inserted into a metal outer can, the laminated battery having this structure has a feature that it can be made thin and large. However, the laminate battery also has a drawback because there is no metal outer can. Since the strength of the exterior film is weaker than that of a metal can, the surface is easily damaged. In order to solve this problem, a thin battery pack in which a laminated battery is placed in an outer case has been developed (see Patent Document 1). The thin battery pack described in this publication has a laminated battery 21 housed in an upper and lower case 22 as shown in FIGS. The upper and lower cases 22 are manufactured by inserting a metal plate 24 into a plastic frame 23.
JP-A-11-111250

以上の構造のパック電池は、ラミネート電池の両面を金属板で保護できるが、全体が厚くなる欠点がある。それは、ラミネート電池の厚みに対して、金属板をインサート成形してなるプラスチック枠の厚みが大きくなるからである。ラミネート電池は、薄くできることが大切なことであるから、全体が厚くなるとせっかくの優れた特長が失われてしまう。したがって、ラミネート電池を内蔵する薄型バッテリパックは、いかに薄くできるかが特に大切である。   The battery pack having the above structure can protect both surfaces of the laminated battery with metal plates, but has a drawback that the whole becomes thick. This is because the thickness of the plastic frame formed by insert molding of the metal plate is larger than the thickness of the laminated battery. Since it is important to be able to make a laminated battery thin, if the whole becomes thick, the excellent features will be lost. Therefore, it is particularly important how thin a thin battery pack incorporating a laminated battery can be made.

本発明者は、この欠点を解決するために、図３に示す構造の薄型バッテリパックを開発した。この薄型バッテリパックは、ラミネート電池３１をプラスチック枠３２の内側に嵌入すると共に、このラミネート電池３１の両面に第１金属板３３及び第２金属板３４を積層し、これらの金属板の表面にラベル３５を接着して被覆している。この構造の薄型バッテリパックは、ラミネート電池３１を嵌入したプラスチック枠３２の両面に金属板を積層するので、プラスチック枠３２の厚みをラミネート電池３１の厚みとほぼ等しくして、全体を薄くしながら両面の強度を向上できる。しかしながら、この構造の薄型バッテリパックは、表面を被覆している金属板が落下等の衝撃によって変形しやすい欠点がある。とくに、薄型バッテリパックの周縁部であって、プラスチック枠３２の周縁に沿って折曲された部分が衝撃を受けやすく、この部分が変形しやすくなる。困ったことに、金属板は変形すると元の形状には復元されないので、変形した部分がそのままの形状に保持されて外観が悪くなってしまう。さらに、薄型バッテリパックは、電気機器に装着した状態で電力を供給するために、プラスチック枠３２に出力端子３６を表出させる電極窓３７を開口しているが、この部分をカバーする金属板が大きく変形すると、電気機器の装着部に正確に装着できなくなる弊害もある。装着部に正しく装着されない薄型バッテリパックは、出力端子３６が接触不良となり電気機器に電力を供給できなくなる。   In order to solve this drawback, the present inventor has developed a thin battery pack having a structure shown in FIG. In this thin battery pack, a laminated battery 31 is fitted inside a plastic frame 32, and a first metal plate 33 and a second metal plate 34 are laminated on both surfaces of the laminated battery 31, and labels are provided on the surfaces of these metal plates. 35 is adhered and covered. In the thin battery pack having this structure, the metal plates are laminated on both surfaces of the plastic frame 32 in which the laminated battery 31 is inserted, so that the thickness of the plastic frame 32 is substantially equal to the thickness of the laminated battery 31 and the both sides are made thin. The strength of can be improved. However, the thin battery pack having this structure has a drawback that the metal plate covering the surface is easily deformed by an impact such as dropping. In particular, the peripheral portion of the thin battery pack that is bent along the peripheral edge of the plastic frame 32 is easily impacted, and this portion is easily deformed. Unfortunately, when the metal plate is deformed, the original shape is not restored, so that the deformed portion is held in its original shape and the appearance is deteriorated. Further, the thin battery pack has an electrode window 37 that exposes the output terminal 36 to the plastic frame 32 in order to supply power in a state where the battery pack is mounted on an electric device. If it is greatly deformed, there is a problem that it cannot be accurately mounted on the mounting portion of the electric device. In a thin battery pack that is not correctly attached to the attachment portion, the output terminal 36 becomes poorly contacted and power cannot be supplied to the electrical device.

本発明は、以上のような問題点を解決することを目的に開発されたものである。本発明の重要な目的は、薄型電池の両面を金属板でカバーして、全体を薄くしながら両面の強度を向上できると共に、金属板が落下等の衝撃で変形するのを有効に防止できる薄型バッテリパックを提供することにある。   The present invention has been developed for the purpose of solving the above problems. An important object of the present invention is to cover both sides of a thin battery with a metal plate, improve the strength of both sides while making the whole thin, and effectively prevent the metal plate from being deformed by an impact such as dropping. It is to provide a battery pack.

本発明の薄型バッテリパックは、薄型電池１と、この薄型電池１の外周縁に沿って配設されるプラスチック製の絶縁枠体４と、この絶縁枠体４と薄型電池１の両面をカバーする金属板５とを備える。絶縁枠体４は、薄型電池１の両側面に位置する一対の縦枠４Ａの両端部を横枠４Ｂで連結した構造であって、金属板５の表面よりも外側に突出する突出部１４を備える。   The thin battery pack of the present invention covers the thin battery 1, the plastic insulating frame 4 disposed along the outer peripheral edge of the thin battery 1, and both surfaces of the insulating frame 4 and the thin battery 1. And a metal plate 5. The insulating frame 4 has a structure in which both ends of a pair of vertical frames 4A located on both side surfaces of the thin battery 1 are connected by a horizontal frame 4B, and a protruding portion 14 protruding outward from the surface of the metal plate 5 is provided. Prepare.

突出部１４は、絶縁枠体４の角部に、あるいは角部と角部の中間に設けることができる。突出部１４は、電気機器取り付け用の嵌合凸ツメ１４Ａとすることができる。さらに、薄型バッテリパックは、出力端子８を配設する電極カバー枠４ａを絶縁枠体４に設けて、この電極カバー枠４ａに電気機器取り付け用の嵌合凸ツメ１４Ａを突出して設けることができる。   The protrusions 14 can be provided at the corners of the insulating frame 4 or between the corners. The protrusion 14 can be a fitting convex claw 14A for attaching an electric device. Further, in the thin battery pack, the electrode cover frame 4a on which the output terminal 8 is disposed can be provided on the insulating frame body 4, and the fitting convex claw 14A for attaching the electric device can be provided protruding from the electrode cover frame 4a. .

さらに、薄型バッテリパックは、金属板５の表面にラベル１７を接着すると共に、このラベル１７に、嵌合凸ツメ１４Ａを突出させる切欠部１７Ａを設けて、この切欠部１７Ａに嵌合凸ツメ１４Ａを挿通することができる。さらに、ラベル１７の切欠部１７Ａは、挿通部分における嵌合凸ツメ１４Ａの断面積よりも大きく開口して、この開口部に水没判定ラベル１８を配設することができる。   Further, in the thin battery pack, the label 17 is adhered to the surface of the metal plate 5, and a cutout portion 17A for projecting the fitting convex claw 14A is provided on the label 17, and the fitting convex claw 14A is provided in the cutout portion 17A. Can be inserted. Further, the cutout portion 17A of the label 17 opens larger than the cross-sectional area of the fitting convex claw 14A in the insertion portion, and the submergence determination label 18 can be disposed in this opening portion.

本発明の薄型バッテリパックは、薄型電池の両面を金属板でカバーして、全体を薄くしながら両面の強度を向上できると共に、金属板が落下等の衝撃で変形するのを有効に防止できる特長がある。それは、本発明の薄型バッテリパックが、薄型電池の外周縁に沿って配設されるプラスチック製の絶縁枠体と薄型電池の両面を金属板でカバーしており、絶縁枠体に、金属板の表面よりも外側に突出する突出部を設けているからである。この構造の薄型バッテリパックは、誤って落下させたときに、金属板の表面から外側に突出する突出部の方が、金属板よりも衝撃を受ける確率が高くなる。したがって、落下等により、金属板が直接受ける衝撃を少なくして、金属板が変形するのを極減できる。とくに、金属板が落下の衝撃を受けて変形すると元に戻ることはないが、プラスチック製の絶縁枠体に設けられる突出部は、衝撃を受けて一瞬変形しても元の形状に復元される。したがって、突出部が落下の衝撃を直接受けても、絶縁枠体が大きく変形することもない。このように、本発明の薄型バッテリパックは、落下等により金属板の変形を有効に防止できるので、電気機器の装着部に常に正しく装着でき、出力端子の接触不良等が生じるのを有効に防止できる。   The thin battery pack of the present invention covers both sides of a thin battery with a metal plate, can improve the strength of both sides while making the whole thin, and can effectively prevent the metal plate from being deformed by an impact such as dropping. There is. That is, the thin battery pack of the present invention covers both sides of the plastic insulating frame and the thin battery disposed along the outer peripheral edge of the thin battery with a metal plate. This is because a protruding portion protruding outward from the surface is provided. In the thin battery pack having this structure, when it is accidentally dropped, the protrusion protruding outward from the surface of the metal plate has a higher probability of receiving an impact than the metal plate. Therefore, the impact that the metal plate receives directly by dropping or the like can be reduced, and the deformation of the metal plate can be minimized. In particular, the metal plate does not return to its original shape when it is subjected to a drop impact, but the protrusion provided on the plastic insulating frame is restored to its original shape even if it is deformed for a moment upon receiving the impact. . Therefore, even if the projecting portion directly receives a drop impact, the insulating frame body is not greatly deformed. As described above, the thin battery pack of the present invention can effectively prevent deformation of the metal plate due to dropping or the like, so that it can always be correctly mounted on the mounting portion of the electric device, and effectively prevent the occurrence of poor contact of the output terminal. it can.

本発明の請求項２の薄型バッテリパックは、絶縁枠体の角部に突出部を設けているので、誤って落下させたときに、角部の突出部で確実に衝撃を受けとって、金属板が変形するのを有効に防止できる。しかも、絶縁枠体の角部は、突出部が衝撃を受ける方向に縦枠と横枠を連結しているので、突出部の衝撃に対する強度を向上できる特長もある。   Since the thin battery pack according to claim 2 of the present invention has the protrusions at the corners of the insulating frame, the metal plate reliably receives an impact at the corner protrusions when dropped by mistake. Can be effectively prevented from deforming. In addition, the corner portion of the insulating frame body has a feature that the strength against the impact of the protruding portion can be improved because the vertical frame and the horizontal frame are connected in the direction in which the protruding portion receives the impact.

本発明の請求項３の薄型バッテリパックは、絶縁枠体の角部と角部の中間に突出部を設けているので、落下の衝撃で変形しやすい部分である角部と角部の中間部分が直接衝撃を受けて変形するのを有効に防止できる。   In the thin battery pack according to claim 3 of the present invention, since the protruding portion is provided between the corner portion of the insulating frame body, the intermediate portion between the corner portion and the corner portion which is easily deformed by the impact of dropping. Can be effectively prevented from being deformed by direct impact.

本発明の請求項４の薄型バッテリパックは、突出部を電気機器取り付け用の嵌合凸ツメとしているので、電気機器に正しく装着する部材である嵌合凸ツメを金属板の変形防止に併用できる特長がある。とくに、本発明の請求項５の薄型バッテリパックは、嵌合凸ツメを電極カバー枠に設けているので、薄型バッテリーパック全体の外形を大きくすることなく、位置決め用の嵌合凸ツメをしっかりと強靭な構造で設けることができる特長がある。   In the thin battery pack according to claim 4 of the present invention, since the protruding portion is a fitting convex claw for mounting an electric device, the fitting convex claw that is a member that is correctly attached to the electric device can be used together to prevent deformation of the metal plate. There are features. In particular, in the thin battery pack according to claim 5 of the present invention, since the fitting convex claw is provided on the electrode cover frame, the fitting convex claw for positioning can be firmly secured without increasing the outer shape of the whole thin battery pack. There is a feature that can be provided with a tough structure.

以下、本発明の実施例を図面に基づいて説明する。ただし、以下に示す実施例は、本発明の技術思想を具体化するための薄型バッテリーパックを例示するものであって、本発明は薄型バッテリーパックを以下のものに特定しない。   Embodiments of the present invention will be described below with reference to the drawings. However, the embodiments described below exemplify a thin battery pack for embodying the technical idea of the present invention, and the present invention does not specify the thin battery pack as follows.

さらに、この明細書は、特許請求の範囲を理解し易いように、実施例に示される部材に対応する番号を、「特許請求の範囲」および「課題を解決するための手段の欄」に示される部材に付記している。ただ、特許請求の範囲に示される部材を、実施例の部材に特定するものでは決してない。   Further, in this specification, in order to facilitate understanding of the claims, numbers corresponding to the members shown in the embodiments are shown in “Claims” and “Means for Solving the Problems”. It is added to the members. However, the members shown in the claims are not limited to the members in the embodiments.

図４ないし図１２に示す薄型バッテリパックは、薄型電池１をケーシング６に収納している。ケーシング６は、薄型電池１の外周縁に沿って配設される絶縁枠体４と、この絶縁枠体４と薄型電池１の両面をカバーする金属板５とを備えている。金属板５と絶縁枠体４とで形成されるケーシング６内に薄型電池１を収納して薄型バッテリパックとしている。図の薄型バッテリパックは、２枚の金属板５からなる第１金属板５Ａと第２金属板５Ｂを絶縁枠体４に連結している。ただ、本発明の薄型バッテリパックは、１枚の金属板を折曲して絶縁枠体の両面をカバーすることもできる。   In the thin battery pack shown in FIGS. 4 to 12, the thin battery 1 is housed in a casing 6. The casing 6 includes an insulating frame 4 that is disposed along the outer peripheral edge of the thin battery 1, and a metal plate 5 that covers both sides of the insulating frame 4 and the thin battery 1. A thin battery 1 is housed in a casing 6 formed of a metal plate 5 and an insulating frame 4 to form a thin battery pack. In the illustrated thin battery pack, a first metal plate 5 </ b> A and a second metal plate 5 </ b> B made of two metal plates 5 are connected to an insulating frame 4. However, the thin battery pack of the present invention can also cover both surfaces of the insulating frame by bending a single metal plate.

図に示す薄型バッテリパックは、薄型電池１としてラミネート電池１Ｘを使用している。本発明の薄型バッテリパックは、両面を金属板でカバーして保護するので、薄型電池として、金属製の外装缶のないラミネート電池を理想的に収納できる。ただ、本発明は、薄型電池をラミネート電池に特定しない。本発明は、金属製の外装缶を有する薄型電池を収納することもできる。金属製の外装缶を備える薄型電池は、全体の厚みを薄くするために、外装缶を薄く製作される。したがって、これらの薄型電池を収納する薄型バッテリパックも、両面を金属板でカバーして薄型電池を保護できる。金属製の外装缶を備える薄型電池は、リチウムイオン電池、ニッケル−水素電池、ニッケル−カドミウム電池等の充電できる二次電池とすることができる。とくに、薄型電池にリチウムイオン電池を使用すると、薄型バッテリパック全体の容量に対する充電容量を大きくできる特長がある。
以下、薄型電池をラミネート電池とする実施例について詳述する。 The thin battery pack shown in the figure uses a laminated battery 1X as the thin battery 1. Since the thin battery pack of the present invention is protected by covering both sides with metal plates, a laminated battery without a metal outer can can be ideally stored as a thin battery. However, the present invention does not specify a thin battery as a laminated battery. The present invention can also accommodate a thin battery having a metal outer can. In a thin battery including a metal outer can, the outer can is made thin in order to reduce the overall thickness. Therefore, the thin battery pack for storing these thin batteries can also protect the thin batteries by covering both surfaces with metal plates. A thin battery including a metal outer can can be a rechargeable secondary battery such as a lithium ion battery, a nickel-hydrogen battery, or a nickel-cadmium battery. In particular, when a lithium ion battery is used for the thin battery, there is a feature that the charge capacity with respect to the capacity of the entire thin battery pack can be increased.
Hereinafter, an example in which a thin battery is a laminated battery will be described in detail.

２枚の金属板５を備える薄型バッテリパックは、薄型電池１であるラミネート電池１Ｘの第１外装フィルム１Ａ側に積層している第１金属板５Ａと、第２外装フィルム１Ｂ側に積層している第２金属板５Ｂとを備える。絶縁枠体４は、四角形で外周面に金属板５を連結している。さらに、図の薄型バッテリパックは、ラミネート電池１Ｘのラップ部１ａに回路基板２を配設しており、この回路基板２とラップ部１ａとの間に基板ホルダー３を配設している。   A thin battery pack including two metal plates 5 is laminated on the first metal plate 5A laminated on the first exterior film 1A side of the laminated battery 1X which is the thin battery 1 and on the second exterior film 1B side. And a second metal plate 5B. The insulating frame 4 has a quadrangular shape and a metal plate 5 connected to the outer peripheral surface. Further, in the illustrated thin battery pack, a circuit board 2 is disposed on the lap portion 1a of the laminated battery 1X, and a substrate holder 3 is disposed between the circuit board 2 and the wrap portion 1a.

ラミネート電池１Ｘは、第１外装フィルム１Ａと第２外装フィルム１Ｂの間に電極を挟んで、第１外装フィルム１Ａと第２外装フィルム１Ｂを電極の外周でラップし、このラップ部１ａを結合して内部に電極を内蔵している。図のラミネート電池１Ｘはポリマー電池である。ただ、本発明は、ラミネート電池をポリマー電池に特定しない。ラミネート電池には、電極を外装フィルムでラミネートしている他の全ての電池が使用できる。図のラミネート電池１Ｘは、四角形で、その両側と一方の端部で外装フィルムのラップ部１ａを設け、ラップ部１ａで第１外装フィルム１Ａと第２外装フィルム１Ｂとを、接着や溶着等の方法で気密に結合している。図のラミネート電池１Ｘは、１枚の外装フィルムを電極のひとつの辺で折り返して、電極の一方の面をカバーする部分を第１外装フィルム１Ａとし、電極の他方の面をカバーする面を第２外装フィルム１Ｂとしている。この構造のラミネート電池１Ｘは、電極の１辺に沿って外装フィルムを折り返すので、ひとつの辺にはラップ部がなく、３辺がラップ部１ａとなる。図示しないが、ラミネート電池は、４辺の外周にラップ部を設けた構造とすることもある。このラミネート電池は、電極の両面に分離された２枚の外装フィルムを重ね、電極周囲の４辺のラップ部で結合して製作される。さらに、ラミネート電池は、電極が四角形であっても、出力リードの取り出し方やラップ部の折り返し方によっては、外形が四角形と異なる形状となることもある。したがって、ラミネート電池は、外形を四角形以外の形状、たとえば、多角形状、長円形状、部分的に湾曲部を有する多角形状とすることもできる。   The laminated battery 1X has an electrode sandwiched between the first exterior film 1A and the second exterior film 1B, wraps the first exterior film 1A and the second exterior film 1B on the outer periphery of the electrode, and bonds the wrap portion 1a. The electrode is built in. The illustrated laminate battery 1X is a polymer battery. However, the present invention does not specify a laminated battery as a polymer battery. As the laminated battery, all other batteries in which electrodes are laminated with an exterior film can be used. The laminated battery 1X shown in the figure has a quadrangular shape and is provided with a wrap portion 1a of an exterior film on both sides and one end thereof, and the first exterior film 1A and the second exterior film 1B are bonded, welded, or the like by the wrap portion 1a. It is connected in an airtight manner. In the illustrated laminate battery 1X, one exterior film is folded at one side of the electrode, the portion covering one surface of the electrode is defined as the first exterior film 1A, and the surface covering the other surface of the electrode is the first. It is set as 2 exterior film 1B. Since the laminated battery 1X having this structure folds the exterior film along one side of the electrode, there is no wrap portion on one side and the wrap portion 1a is formed on three sides. Although not shown, the laminated battery may have a structure in which wrap portions are provided on the outer periphery of four sides. This laminate battery is manufactured by stacking two exterior films separated on both sides of an electrode and bonding them with four side wraps around the electrode. Furthermore, even if the electrode is square, the outer shape of the laminated battery may be different from the square depending on how the output lead is taken out and how the wrap portion is folded. Therefore, the laminate battery can have an outer shape other than a quadrangle, for example, a polygonal shape, an oval shape, or a polygonal shape having a curved portion partially.

図に示すラミネート電池１Ｘは、第１外装フィルム１Ａを平面状としている。第１外装フィルム１Ａを平面状とするために、第２外装フィルム１Ｂは電極の周囲に沿って折曲され、ラップ部１ａで第１外装フィルム１Ａに密着状態で結合される。このラミネート電池１Ｘは、図１２の断面図に示すように、ラップ部１ａの片方にのみ基板ホルダー３と回路基板２を設けて、ラップ部１ａを電極収納部１ｂと同じ厚さにできる。   In the laminated battery 1X shown in the figure, the first exterior film 1A has a planar shape. In order to make 1st exterior film 1A planar, 2nd exterior film 1B is bent along the circumference | surroundings of an electrode, and is joined to 1st exterior film 1A in the state of contact | adherence by the lap | wrap part 1a. In the laminated battery 1X, as shown in the cross-sectional view of FIG. 12, the substrate holder 3 and the circuit board 2 are provided only on one side of the wrap portion 1a, and the wrap portion 1a can have the same thickness as the electrode housing portion 1b.

図９と図１０のラミネート電池１Ｘは、電極の両側に位置する一対の折曲ラップ部１ａｓを、第２外装フィルム１ＢをＵ曲するように折り曲げて、電極の両面に沿うように折曲している。一対の折曲ラップ部１ａｓの間に位置する突出ラップ部１ａｔは、電極の側面に沿って折曲することなく電極表面に平行な平面状として電極から突出している。電極から突出する突出ラップ部１ａｔと、突出ラップ部１ａｔの両側にある折曲ラップ部１ａｓとは互いにコ字状に連結される形状となって、突出ラップ部１ａｔと折曲ラップ部１ａｓとで溝形に折曲されてなる溝形突出部１ｃとしている。   In the laminated battery 1X of FIGS. 9 and 10, a pair of folding wrap portions 1as located on both sides of the electrode are bent so as to bend the second exterior film 1B, and are bent along both sides of the electrode. ing. The protruding wrap portion 1at located between the pair of bent lap portions 1as protrudes from the electrode as a plane parallel to the electrode surface without being bent along the side surface of the electrode. The protruding wrap portion 1at protruding from the electrode and the bent wrap portions 1as on both sides of the protruding wrap portion 1at are connected to each other in a U-shape, and the protruding wrap portion 1at and the bent wrap portion 1as are The groove-shaped protrusion 1c is bent into a groove shape.

図１０の断面図に示すラミネート電池１Ｘは、電極両側に設けている折曲ラップ部１ａｓの幅を電池の厚さよりも狭くして、表面に段差スペース部７を設けている。図の絶縁枠体４は、段差スペース部７に突出するように、絶縁枠体４の内周に沿って伸びるリブ１５を内側に突出するように絶縁枠体４に一体的に成形して設けて、リブ１５をラミネート電池１Ｘの段差スペース部７に配設している。図に示すように、電極両側の折曲ラップ部１ａを電極に沿って折曲しているラミネート電池１Ｘは、両側の折曲ラップ部１ａｓを両側に突出させないので全体の幅を狭くできる。また、図９に示すように、両側の折曲ラップ部１ａｓが、出力端子８を設ける突出ラップ部１ａｔが曲がるのを阻止する補強リブの作用をして、この部分を補強できる。さらに、絶縁枠体４の内面に無駄な隙間ができないように装着できる特長もある。   The laminated battery 1X shown in the cross-sectional view of FIG. 10 is provided with a step space portion 7 on the surface by making the width of the folded wrap portion 1as provided on both sides of the electrode narrower than the thickness of the battery. The insulating frame 4 shown in the figure is integrally formed on the insulating frame 4 so that the rib 15 extending along the inner periphery of the insulating frame 4 protrudes inward so as to protrude into the step space portion 7. The rib 15 is disposed in the step space portion 7 of the laminated battery 1X. As shown in the figure, the laminated battery 1X in which the folded wrap portions 1a on both sides of the electrode are bent along the electrodes does not project the folded wrap portions 1as on both sides, so that the entire width can be reduced. Further, as shown in FIG. 9, the bent lap portions 1as on both sides can act as reinforcing ribs that prevent the protruding wrap portions 1at provided with the output terminals 8 from bending, thereby reinforcing this portion. Further, there is a feature that the insulating frame 4 can be mounted so that no unnecessary gap is formed on the inner surface.

ラミネート電池１Ｘは、出力端子８を設けている突出ラップ部１ａｔに正負の出力リード９を設けている。出力リード９は、図示しないが、第１外装フィルムと第２外装フィルムとの間に気密に挟着されて外部に引き出される。出力リード９は、保護素子１０を介して薄型バッテリパックの出力端子８に接続される。このラミネート電池１Ｘは、両面を開口している四角形である絶縁枠体４の内部に嵌入される。   The laminate battery 1X is provided with positive and negative output leads 9 at the protruding wrap portion 1at where the output terminal 8 is provided. Although not shown, the output lead 9 is airtightly sandwiched between the first exterior film and the second exterior film and pulled out. The output lead 9 is connected to the output terminal 8 of the thin battery pack through the protective element 10. This laminated battery 1X is inserted into the inside of an insulating frame 4 that is a quadrangle having both sides open.

絶縁枠体４は、全体をプラスチックで四角形の枠形に成形している。この絶縁枠体４は、枠の内形を、回路基板２と基板ホルダー３を装着しているラミネート電池１Ｘを嵌入できる大きさとしている。さらに、絶縁枠体４は、これを設けることで薄型バッテリパックが厚くならないように、嵌入されるラミネート電池１Ｘの表面と同一ないしほぼ同一面となり、あるいはラミネート電池１Ｘの表面よりも低くなる厚さに成形される。ただ、絶縁枠体は必ずしも四角形の枠形とする必要はなく、ラミネート電池を嵌入できる種々の形状、たとえば、多角形や部分的に湾曲部を設けた多角形状とすることもできる。さらに、絶縁枠体は、必ずしも内形と外形を同一形状とする必要はなく、これらを異なる形状とすることもできる。たとえば、絶縁枠体は、内形を四角形として、外形を部分的に湾曲部を設けた多角形状とすることもできる。この絶縁枠体は、ケーシングの外形を薄型バッテリパックが装着される電気機器の外形に沿う形状とすることができる。   The entire insulating frame 4 is formed of a plastic into a rectangular frame shape. The insulating frame 4 has an inner shape that allows the laminated battery 1 </ b> X with the circuit board 2 and the substrate holder 3 to be fitted therein. Further, the thickness of the insulating frame 4 is the same as or substantially the same as the surface of the laminated battery 1X to be inserted or lower than the surface of the laminated battery 1X so that the thin battery pack is not thickened by providing this. To be molded. However, the insulating frame does not necessarily have to be a rectangular frame shape, and may have various shapes into which the laminated battery can be inserted, for example, a polygonal shape or a polygonal shape in which a curved portion is partially provided. Furthermore, the inner frame and the outer shape do not necessarily have the same shape, and the insulating frame can have different shapes. For example, the insulating frame may have a polygonal shape in which the inner shape is a quadrangle and the outer shape is partially provided with a curved portion. In this insulating frame, the outer shape of the casing can be made to conform to the outer shape of the electric device to which the thin battery pack is mounted.

図９の絶縁枠体４は、ラミネート電池１Ｘの両側面に位置する一対の縦枠４Ａの両端部を一対の横枠４Ｂで連結した構造である。一対の横枠４Ｂは、出力端子８を配設している電極カバー枠４ａと、この電極カバー枠４ａと反対側に設けられた底枠４ｂとを備えている。電極カバー枠４ａは、四角形のひとつの辺であって、四角形の他の３辺の部分よりも幅が広く、出力端子８を外部に表出させる電極窓１６を開口している。図の絶縁枠体４は、電極カバー枠４ａに複数の出力端子８を表出させる電極窓１６を開口している。出力端子８は回路基板２に固定されて、電極窓１６から外部に表出される。   9 has a structure in which both ends of a pair of vertical frames 4A located on both side surfaces of the laminated battery 1X are connected by a pair of horizontal frames 4B. The pair of horizontal frames 4B includes an electrode cover frame 4a in which the output terminals 8 are disposed, and a bottom frame 4b provided on the opposite side of the electrode cover frame 4a. The electrode cover frame 4a is one side of a quadrangle and is wider than the other three sides of the quadrangle, and opens an electrode window 16 that exposes the output terminal 8 to the outside. The insulating frame 4 shown in the figure has an electrode window 16 that allows the output cover 8 to be exposed on the electrode cover frame 4a. The output terminal 8 is fixed to the circuit board 2 and is exposed to the outside from the electrode window 16.

さらに、絶縁枠体４は、両面をカバーする金属板５の表面よりも外側に突出する突出部１４を備える。図の薄型バッテリパックは、角部で絶縁枠体４を外部に表出させる構造としている。絶縁枠体４は角部に突出部１４を設けて、この突出部１４を金属板５の表面よりも外側に突出させている。図の薄型バッテリパックは、四隅でプラスチック製の絶縁枠体４を外部に突出させるように、絶縁枠体４の四隅部に突出部１４を設けている。金属板５は、角部の突出部１４を表出できる形状としている。   Furthermore, the insulating frame 4 includes a protruding portion 14 that protrudes outward from the surface of the metal plate 5 that covers both surfaces. The thin battery pack shown in the figure has a structure in which the insulating frame 4 is exposed to the outside at the corners. The insulating frame 4 is provided with protrusions 14 at the corners, and the protrusions 14 protrude outward from the surface of the metal plate 5. The thin battery pack shown in the figure has protrusions 14 at the four corners of the insulating frame 4 so that the plastic insulating frame 4 protrudes to the outside at the four corners. The metal plate 5 has a shape capable of exposing the protruding portion 14 at the corner.

さらに、絶縁枠体４は、角部と角部の中間に突出部１４を設けることもできる。図に示す絶縁枠体４は、角部と角部の中間に設ける突出部１４として、電極カバー枠４ａに電気機器取り付け用の嵌合凸ツメ１４Ａを設けている。嵌合凸ツメ１４Ａは、電極カバー枠４ａの側面であって、絶縁枠体４における端面から突出して設けている。この位置に嵌合凸ツメ１４Ａを設ける構造は、絶縁枠体４の厚さを大きくすることなく、いいかえると絶縁枠体４を薄くしながら嵌合凸ツメ１４Ａを設けることができる。ただ、電気機器取り付け用の嵌合凸ツメは、電極カバー枠の表面側に多少突出する状態で設けることもできる。この構造は、絶縁枠体の表面側に突出する嵌合凸ツメで、表面側の金属板を保護できる特長がある。   Furthermore, the insulating frame body 4 can also provide the protrusion part 14 in the middle of a corner | angular part. The insulating frame body 4 shown in the drawing is provided with a fitting projection claw 14A for mounting an electric device on the electrode cover frame 4a as a protruding portion 14 provided between the corner portion. The fitting convex claw 14 </ b> A is provided on the side surface of the electrode cover frame 4 a so as to protrude from the end surface of the insulating frame body 4. The structure in which the fitting convex claw 14A is provided at this position can provide the fitting convex claw 14A while reducing the thickness of the insulating frame 4 without increasing the thickness of the insulating frame 4. However, the fitting convex claw for attaching the electric device can be provided in a state of protruding slightly to the surface side of the electrode cover frame. This structure has an advantage that the metal plate on the surface side can be protected by the fitting convex claw protruding to the surface side of the insulating frame.

図の薄型バッテリーパックは、絶縁枠体４の電極カバー枠４ａにふたつの嵌合凸ツメ１４Ａを突出させている。嵌合凸ツメ１４Ａは、ひとつ設けることも、また３つ以上設けることもできる。嵌合凸ツメ１４Ａは、電気機器に設けている嵌合凹部（図示せず）に嵌合されて、薄型バッテリーパックを電気機器に装着する方向を特定する。したがって、嵌合凸ツメ１４Ａは、電極カバー枠４ａの側面に、左右または上下に非対称な形状あるいは配列で設けられる。図７の薄型バッテリーパックは、先端に向かって下り勾配に傾斜するように嵌合凸ツメ１４Ａを設けている。   In the illustrated thin battery pack, two fitting convex claws 14 </ b> A are protruded from the electrode cover frame 4 a of the insulating frame 4. One fitting convex claw 14A can be provided, or three or more can be provided. The fitting convex claw 14A is fitted into a fitting recess (not shown) provided in the electric device, and specifies the direction in which the thin battery pack is attached to the electric device. Therefore, the fitting convex claw 14A is provided on the side surface of the electrode cover frame 4a in an asymmetric shape or arrangement on the left and right or top and bottom. The thin battery pack of FIG. 7 is provided with a fitting convex claw 14A so as to incline downward toward the tip.

さらに、図４と図８に示す薄型バッテリーパックは、電極カバー枠４ａの反対側の底枠４ｂの角部と角部の中間にも、突出部１４として中間凸ツメ１４Ｂを設けている。この中間凸ツメ１４Ｂは、嵌合凸ツメ１４Ａよりも突出量が小さく、電気機器に装着される状態で、電気機器に設けている嵌合凹部（図示せず）に案内される。このように、電極カバー枠４ａと底枠４ｂの両方に、突出部１４として形状が異なる嵌合凸ツメ１４Ａと中間凸ツメ１４Ｂとを設けている薄型バッテリーパックは、電気機器に装着する方向をより正確にして、逆挿入を確実に阻止できる特長がある。   Further, the thin battery pack shown in FIGS. 4 and 8 is provided with an intermediate convex claw 14B as a protruding portion 14 in the middle of the corner portion of the bottom frame 4b on the opposite side of the electrode cover frame 4a. The intermediate convex claw 14B has a smaller projection than the fitting convex claw 14A, and is guided to a fitting concave portion (not shown) provided in the electric device in a state of being mounted on the electric device. Thus, the thin battery pack in which the fitting convex claw 14A and the intermediate convex claw 14B having different shapes as the projecting portion 14 are provided on both the electrode cover frame 4a and the bottom frame 4b has a direction to be mounted on the electric device. It has the advantage of being more accurate and reliably preventing reverse insertion.

電極カバー枠４ａや底枠４ｂに突出部１４を設けている薄型バッテリーパックは、落下等で突出部１４に衝撃が加えられることがある。突出部１４が電極カバー枠４ａや底枠４ｂの角部でなくて、角部の中間に設けている薄型バッテリーパックは、突出部１４の衝撃で絶縁枠体４の内部に収納している部材に衝撃が加えられることがある。薄型バッテリーパックの外形をできるかぎり小さくするために、電極カバー枠４ａや底枠４ｂを、突出部１４の衝撃で全く変形できないように、太く強靭な構造にはできないからである。この弊害を少なくするために、図８と図９に示す絶縁枠体４は、角部に突出部１４を設けている。絶縁枠体４の角部は、電極カバー枠４ａや底枠４ｂの横枠４Ｂに、突出部１４が衝撃を受ける方向に縦枠４Ａを連結しているので、突出部１４の衝撃に対する強度を縦枠４Ａで向上できる。さらに、中間の突出部１４の両側に位置する角部を突出させている薄型バッテリーパックは、落下するときに、突出している角部の突出部１４にも衝突する確率が高くなる。このため、薄型バッテリーパックが落下するとき、中間の突出部１４のみでなくて、角部の突出部１４にも衝撃を受ける確率が高くなり、衝撃が中間の突出部１４と角部の突出部１４に分散して、耐衝撃強度を向上できる。   In the thin battery pack in which the protruding portion 14 is provided on the electrode cover frame 4a and the bottom frame 4b, an impact may be applied to the protruding portion 14 due to dropping or the like. The thin battery pack provided in the middle of the corner portion of the projection cover 14 is not the corner portion of the electrode cover frame 4a or the bottom frame 4b, but is a member housed inside the insulating frame 4 by the impact of the projection portion 14 May be shocked. This is because in order to make the outer shape of the thin battery pack as small as possible, the electrode cover frame 4a and the bottom frame 4b cannot be made thick and strong so that they cannot be deformed at all by the impact of the protrusions 14. In order to reduce this harmful effect, the insulating frame 4 shown in FIGS. 8 and 9 is provided with protruding portions 14 at the corners. The corners of the insulating frame 4 are connected to the horizontal frame 4B of the electrode cover frame 4a and the bottom frame 4b with the vertical frame 4A in the direction in which the protrusion 14 receives an impact. It can be improved by the vertical frame 4A. Furthermore, when the thin battery pack that protrudes the corners located on both sides of the intermediate projecting portion 14 falls, the probability of colliding with the projecting portion 14 of the projecting corner portion increases. For this reason, when the thin battery pack falls, not only the middle projecting portion 14 but also the corner projecting portion 14 has a higher probability of receiving an impact, and the impact is affected by the middle projecting portion 14 and the corner projecting portion. 14 to improve impact strength.

さらに、四角形の絶縁枠体４は、対向する外周面に、外周に沿って伸びる係止溝１１を設けている。図９と図１０の絶縁枠体４は、縦枠４Ａの外周面に係止溝１１を設けており、ここに第１金属板５Ａと第２金属板５Ｂの先端縁に設けた係止折曲片１２を入れて連結している。係止溝１１は、第１金属板５Ａと第２金属板５Ｂの先端縁に設けている係止折曲片１２を入れることができる幅としている。さらに、図９と図１０の絶縁枠体４は、第１金属板５Ａと第２金属板５Ｂの両方を１列の係止溝１１に入れている。この構造は、１列の係止溝１１に第１金属板５Ａと第２金属板５Ｂを入れるので、絶縁枠体４の形状を簡単にできる。ただ、本発明の薄型バッテリパックは、図示しないが、第１金属板と第２金属板とを別々に入れるように２列の係止溝を平行に設けることもできる。   Furthermore, the rectangular insulating frame 4 is provided with a locking groove 11 extending along the outer periphery on the opposing outer peripheral surface. The insulating frame 4 of FIGS. 9 and 10 is provided with a locking groove 11 on the outer peripheral surface of the vertical frame 4A, and a locking fold provided at the leading edge of the first metal plate 5A and the second metal plate 5B here. The music piece 12 is inserted and connected. The locking groove 11 has a width that allows insertion of the locking bent piece 12 provided at the leading edge of the first metal plate 5A and the second metal plate 5B. Further, in the insulating frame 4 of FIGS. 9 and 10, both the first metal plate 5 </ b> A and the second metal plate 5 </ b> B are placed in one row of locking grooves 11. In this structure, since the first metal plate 5A and the second metal plate 5B are inserted into one row of the locking grooves 11, the shape of the insulating frame 4 can be simplified. However, although not shown, the thin battery pack of the present invention can also be provided with two rows of locking grooves in parallel so that the first metal plate and the second metal plate can be inserted separately.

さらに、図８と図９に示す薄型バッテリーパックは、金属板５を固定する状態で、ラベル１７を接着している。ラベル１７は、一方の金属板５の全面に接着され、さらに周縁部を他方の金属板５の表面にも接着している。このラベル１７は、嵌合凸ツメ１４Ａと中間凸ツメ１４Ｂを挿通して外部に突出させるために、嵌合凸ツメ１４Ａと中間凸ツメ１４Ｂの位置を切欠部１７Ａとしている。また、ラベル１７の切欠部１７Ａは、挿通部分における嵌合凸ツメ１４Ａの断面積よりも開口面積を大きくしており、切欠部１７Ａと嵌合凸ツメ１４Ａとの間にできる開口部に水没判定ラベル１８を配設している。この薄型バッテリーパックは、水没判定ラベル１８を接着するために、専用の切欠部１７Ａを設ける必要がない。強度を持たせているラベル１７は、切欠部１７Ａを大きくすると、どんどん強度が低下する。嵌合凸ツメ１４Ａを挿通する切欠部１７Ａに水没判定ラベル１８を接着すると、水没判定ラベル用に切欠部を設ける必要がなく、ラベル１７の強度低下を少なくして、水没判定ラベル１８を設けることができる。   Further, in the thin battery pack shown in FIGS. 8 and 9, the label 17 is bonded in a state where the metal plate 5 is fixed. The label 17 is adhered to the entire surface of one metal plate 5, and the peripheral edge is also adhered to the surface of the other metal plate 5. The label 17 has a notch 17A at the position of the fitting convex claw 14A and the intermediate convex claw 14B so that the fitting convex claw 14A and the intermediate convex claw 14B are inserted and protruded to the outside. Further, the cutout portion 17A of the label 17 has an opening area larger than the cross-sectional area of the fitting convex claw 14A in the insertion portion, and the submerged determination is made in the opening portion formed between the cutout portion 17A and the fitting convex claw 14A. A label 18 is provided. This thin battery pack does not need to be provided with a dedicated cutout portion 17A for adhering the submergence determination label 18. The strength of the label 17 that has strength decreases as the notch 17A is enlarged. When the submergence determination label 18 is adhered to the cutout portion 17A through which the fitting convex claw 14A is inserted, there is no need to provide a cutout portion for the submergence determination label, and the decrease in strength of the label 17 is reduced, and the submersion determination label 18 is provided. Can do.

以上の薄型バッテリパックは、図９において絶縁枠体４の下面に第１金属板５Ａを固定し、上面に第２金属板５Ｂを固定している。第１金属板５Ａは、ラミネート電池１Ｘの第１外装フィルム１Ａ側に積層されて、ラミネート電池１Ｘの表面を保護し、第２金属板５Ｂは、第２外装フィルム１Ｂの表面に積層されてラミネート電池１Ｘの裏面を保護する。第１金属板５Ａと第２金属板５Ｂは弾性変形できる金属板である。第１金属板５Ａと第２金属板５Ｂは、厚さを０．１ｍｍとするＳＵＳ３０４のステンレス板である。この金属板５は、薄くて極めて強靭な特長がある。ただし、金属板は、さらに薄くあるいは厚くすることもできる。たとえば、厚さを０．０５〜０．３ｍｍとすることもできる。金属板は、ステンレスに代わって、鉄や鉄合金、あるいはアルミニウムやアルミニウム合金等とすることもできる。   In the thin battery pack described above, the first metal plate 5A is fixed to the lower surface of the insulating frame 4 in FIG. 9, and the second metal plate 5B is fixed to the upper surface. The first metal plate 5A is laminated on the first exterior film 1A side of the laminate battery 1X to protect the surface of the laminate battery 1X, and the second metal plate 5B is laminated on the surface of the second exterior film 1B and laminated. The back surface of the battery 1X is protected. The first metal plate 5A and the second metal plate 5B are metal plates that can be elastically deformed. The first metal plate 5A and the second metal plate 5B are SUS304 stainless steel plates having a thickness of 0.1 mm. The metal plate 5 is thin and extremely strong. However, the metal plate can be made thinner or thicker. For example, the thickness can be 0.05 to 0.3 mm. The metal plate can be made of iron, iron alloy, aluminum, aluminum alloy or the like instead of stainless steel.

第１金属板５Ａと第２金属板５Ｂは、絶縁枠体４の表面をカバーするように、絶縁枠体４の表面に沿って内側に折曲され、さらに折曲された先端縁を係止溝１１に向かって内側に折曲して係止折曲片１２としている。第１金属板５Ａと第２金属板５Ｂは、対向する辺に係止折曲片１２を設けている。図９に示す薄型バッテリパックは、第１金属板５Ａと第２金属板５Ｂの対向する側縁に係止折曲片１２を設けている。この薄型バッテリパックは、第１金属板５Ａと第２金属板５Ｂを絶縁枠体４にしっかりと外れないように連結できる。ただし、本発明の薄型バッテリパックは、図示しないが、第１金属板と第２金属板の３〜４辺に係止折曲片を設けて、これを絶縁枠体に連結することもできる。   The first metal plate 5 </ b> A and the second metal plate 5 </ b> B are bent inward along the surface of the insulating frame body 4 so as to cover the surface of the insulating frame body 4. A locking bent piece 12 is formed by bending inward toward the groove 11. The first metal plate 5A and the second metal plate 5B are provided with locking bent pieces 12 on opposite sides. The thin battery pack shown in FIG. 9 is provided with locking bent pieces 12 on the side edges of the first metal plate 5A and the second metal plate 5B facing each other. In this thin battery pack, the first metal plate 5A and the second metal plate 5B can be connected to the insulating frame 4 so as not to come off firmly. However, although the thin battery pack of the present invention is not shown, it is also possible to provide locking bent pieces on the 3rd to 4th sides of the first metal plate and the second metal plate and connect them to the insulating frame.

さらに、図の薄型バッテリパックは、第２金属板５Ｂに、出力端子８を外部に表出させる電極表出切欠部５ｂを設けている。電極表出切欠部５ｂは、絶縁枠体４の電極表出部分を外部に表出させるので、電極表出部分を表出できる形状としている。図の電極表出部分は、全ての電極窓１６を外部に表出させるように、全ての電極窓１６の開口部を含む大きさとしている。第１金属板５Ａは、一方の嵌合凸ツメ１４Ａをカバーする、嵌合凸ツメカバー部５ｃを有する。嵌合凸ツメカバー部５ｃは、Ｌ字状に折曲されて、電極カバー枠４ａの側面と表面をカバーする。さらに、嵌合凸ツメ１４Ａを挿通するために貫通孔５ｄを設けている。   Further, in the illustrated thin battery pack, the electrode metal notch 5b for exposing the output terminal 8 to the outside is provided on the second metal plate 5B. The electrode exposed notch 5b has a shape that allows the electrode exposed portion to be exposed because the electrode exposed portion of the insulating frame 4 is exposed to the outside. The electrode exposed portion in the figure has a size including the openings of all the electrode windows 16 so that all the electrode windows 16 are exposed to the outside. 5 A of 1st metal plates have the fitting convex claw cover part 5c which covers one fitting convex claw 14A. The fitting convex claw cover portion 5c is bent in an L shape to cover the side surface and the surface of the electrode cover frame 4a. Furthermore, a through-hole 5d is provided to insert the fitting convex claw 14A.

第１金属板５Ａと第２金属板５Ｂは、弾性変形できる金属板５であるから、金属板５を弾性変形させて係止折曲片１２を係止溝１１に入れることができる。第１金属板５Ａと第２金属板５Ｂは、弾性変形する復元力で、係止折曲片１２を係止溝１１に入れる状態に保持する。この構造の薄型バッテリパックは、図１３に示すように、収納しているラミネート電池１Ｘが膨れるように変形して、第１金属板５Ａと第２金属板５Ｂの中央が矢印Ａで示されるように押圧されて変形すると、第１金属板５Ａと第２金属板５Ｂの外周縁は、矢印Ｂで示す方向に引っ張られる。矢印Ｂで示す力は、係止折曲片１２を係止溝１１に引き込ませる方向であるから、この方向に作用する力が、係止折曲片１２を係止溝１１から外すことはなく、反対に係止折曲片１２を係止溝１１に食い込ませる力が作用して、第１金属板５Ａと第２金属板５Ｂは、さらにしっかりと絶縁枠体４に連結される。とくに、薄型バッテリパックの絶縁枠体４は非常に薄いので、第１金属板５Ａと第２金属板５Ｂを内側に折曲している部分の幅は極めて狭く、第１金属板５Ａと第２金属板５Ｂが矢印Ｂで示す方向に引っ張られても、折曲部が変形することがない。したがって、係止折曲片１２を係止溝１１に入れて第１金属板５Ａと第２金属板５Ｂを絶縁枠体４に連結する薄型バッテリパックは、第１金属板５Ａと第２金属板５Ｂを弾性変形させることにより、簡単かつ容易に、しかも迅速に能率よく第１金属板５Ａと第２金属板５Ｂを絶縁枠体４に連結して安価に多量生産でき、さらに連結した状態では第１金属板５Ａと第２金属板５Ｂとを外れないようにしっかりと絶縁枠体４に固定できる特長がある。   Since the first metal plate 5 </ b> A and the second metal plate 5 </ b> B are the metal plates 5 that can be elastically deformed, the metal plate 5 can be elastically deformed to put the locking bent pieces 12 into the locking grooves 11. The first metal plate 5 </ b> A and the second metal plate 5 </ b> B hold the locking bent piece 12 in the locking groove 11 with elastic restoring force. As shown in FIG. 13, the thin battery pack having this structure is deformed so that the laminated battery 1X accommodated is expanded, and the center of the first metal plate 5A and the second metal plate 5B is indicated by an arrow A. When pressed and deformed, the outer peripheral edges of the first metal plate 5A and the second metal plate 5B are pulled in the direction indicated by the arrow B. Since the force indicated by the arrow B is a direction for pulling the locking bent piece 12 into the locking groove 11, the force acting in this direction does not remove the locking bent piece 12 from the locking groove 11. On the other hand, a force that bites the locking bent piece 12 into the locking groove 11 acts, and the first metal plate 5A and the second metal plate 5B are more firmly connected to the insulating frame 4. In particular, since the insulating frame 4 of the thin battery pack is very thin, the width of the portion where the first metal plate 5A and the second metal plate 5B are bent inward is extremely narrow, and the first metal plate 5A and the second metal plate 5B Even when the metal plate 5B is pulled in the direction indicated by the arrow B, the bent portion is not deformed. Therefore, the thin battery pack in which the locking bent piece 12 is inserted into the locking groove 11 and the first metal plate 5A and the second metal plate 5B are connected to the insulating frame 4 is the first metal plate 5A and the second metal plate. By elastically deforming 5B, the first metal plate 5A and the second metal plate 5B can be easily and quickly and efficiently connected to the insulating frame 4 for mass production at low cost. There is an advantage that the first metal plate 5A and the second metal plate 5B can be firmly fixed to the insulating frame 4 so as not to be detached.

第１金属板５Ａと第２金属板５Ｂを絶縁枠体４に連結する前工程で、ラミネート電池１Ｘのラップ部１ａに回路基板２と基板ホルダー３が配設される。回路基板２は、出力端子８を設けるために薄型バッテリパック全体を厚くしないように、ラミネート電池１Ｘのラップ部１ａに配設される。ラップ部１ａが電極収納部１ｂよりも低くなって凹部となっているので、このスペースを有効に利用して出力端子８を配設する。この回路基板２は絶縁基板で、上面に薄型バッテリパックの出力端子８を固定している。出力端子８は、絶縁枠体４の電極カバー枠４ａに設けている電極窓１６から外部に表出される。この出力端子８は、薄型バッテリパックを装着する電気機器の端子に弾性的に押圧される。押圧力に対して出力端子８をしっかりと保持するために、出力端子８を設けている回路基板２は、基板ホルダー３とラップ部１ａと第１金属板５Ａで支持する。さらに、出力端子８を第２外装フィルム１Ｂと同一面に接近させるために、背面に基板ホルダー３を配設している。   In the previous step of connecting the first metal plate 5A and the second metal plate 5B to the insulating frame 4, the circuit board 2 and the substrate holder 3 are disposed on the lap portion 1a of the laminated battery 1X. The circuit board 2 is disposed in the lap portion 1a of the laminated battery 1X so as not to make the entire thin battery pack thicker in order to provide the output terminal 8. Since the wrap portion 1a is lower than the electrode storage portion 1b to form a concave portion, the output terminal 8 is disposed using this space effectively. The circuit board 2 is an insulating board, and an output terminal 8 of a thin battery pack is fixed on the upper surface. The output terminal 8 is exposed to the outside from the electrode window 16 provided in the electrode cover frame 4 a of the insulating frame 4. The output terminal 8 is elastically pressed against a terminal of an electric device on which the thin battery pack is mounted. In order to hold the output terminal 8 firmly against the pressing force, the circuit board 2 provided with the output terminal 8 is supported by the board holder 3, the wrap portion 1a, and the first metal plate 5A. Furthermore, in order to make the output terminal 8 approach the same surface as the second exterior film 1B, the substrate holder 3 is disposed on the back surface.

回路基板２は、出力端子８に加えて、ラミネート電池１Ｘの保護回路を実現する電子部品を実装することができる。この電子部品は、回路基板２の裏面に突出するように固定される。裏面の電子部品は、基板ホルダー３の上面に凹部３Ｃを設けてここに配置できる。保護回路は、ラミネート電池１Ｘを過充電や過放電から防止するために充放電電流を制御する回路、過電流を検出して電流を遮断する回路、ラミネート電池１Ｘが異常に高い温度になると電流を遮断する回路等である。回路基板２は、ラミネート電池１Ｘのラップ部１ａに配置できる幅と長さの細長い形状である。図の回路基板２は、ラップ部１ａに嵌入できる長方形である。   In addition to the output terminal 8, the circuit board 2 can be mounted with an electronic component that realizes a protection circuit for the laminated battery 1X. This electronic component is fixed so as to protrude from the back surface of the circuit board 2. The electronic component on the back surface can be disposed here by providing a recess 3C on the top surface of the substrate holder 3. The protection circuit is a circuit that controls the charging / discharging current to prevent the laminated battery 1X from being overcharged or overdischarged, a circuit that detects the overcurrent and interrupts the current, and the current that is output when the laminated battery 1X reaches an abnormally high temperature. A circuit that shuts off. The circuit board 2 has an elongated shape with a width and a length that can be disposed on the lap portion 1a of the laminated battery 1X. The circuit board 2 shown in the figure is a rectangle that can be fitted into the wrap portion 1a.

基板ホルダー３は、全体をプラスチックで成形している。基板ホルダー３は、回路基板２の裏面とラミネート電池１Ｘのラップ部１ａとの間に配設されて、回路基板２の出力端子８を第２外装フィルム１Ｂの表面と同一面に接近させる。図９の基板ホルダー３は、周壁３Ａと凸部３Ｂを設けて、実質的な厚さを大きくして、出力端子８を第２外装フィルム１Ｂと同一平面に位置させる。凸部３Ｂは中央部分に設けてあり、周壁３Ａは両端と一方の側縁に沿って設けている。凸部３Ｂは、図９に示すように、中央部分に幅広く設け、あるいは図示しないが、中央部分に複数設けることができる。凸部３Ｂと周壁３Ａの間に凹部３Ｃができるので、図の薄型バッテリパックは、この凹部３Ｃに保護素子１０を配設している。保護素子１０は、ＰＴＣ、ブレーカ、ヒューズ等である。さらに、保護回路を実現する電子部品を実装する回路基板２は、電子部品を基板ホルダー３の上面にできる凹部３Ｃに配設する。基板ホルダー３は、ラミネート電池１Ｘのラップ部１ａに嵌着できる外形に成形される。図の基板ホルダー３は、長方形に成形している。   The substrate holder 3 is entirely made of plastic. The substrate holder 3 is disposed between the back surface of the circuit substrate 2 and the lap portion 1a of the laminated battery 1X, and brings the output terminal 8 of the circuit substrate 2 close to the same surface as the surface of the second exterior film 1B. The substrate holder 3 in FIG. 9 is provided with the peripheral wall 3A and the convex portion 3B, and the substantial thickness is increased so that the output terminal 8 is positioned in the same plane as the second exterior film 1B. The convex portion 3B is provided at the center portion, and the peripheral wall 3A is provided along both ends and one side edge. As shown in FIG. 9, the convex portion 3 </ b> B can be provided widely in the central portion, or a plurality of convex portions 3 </ b> B can be provided in the central portion although not shown. Since the concave portion 3C is formed between the convex portion 3B and the peripheral wall 3A, the thin battery pack shown in the figure has the protective element 10 disposed in the concave portion 3C. The protection element 10 is a PTC, a breaker, a fuse, or the like. Furthermore, the circuit board 2 on which the electronic component for realizing the protection circuit is mounted is disposed in the recess 3 </ b> C where the electronic component can be formed on the upper surface of the substrate holder 3. The substrate holder 3 is formed into an outer shape that can be fitted to the lap portion 1a of the laminated battery 1X. The illustrated substrate holder 3 is formed in a rectangular shape.

従来の薄型バッテリパックの分解斜視図An exploded perspective view of a conventional thin battery pack 図１に示す薄型バッテリパックの断面図Sectional view of the thin battery pack shown in FIG. 本発明者が先に開発した薄型バッテリパックの分解斜視図The exploded perspective view of the thin battery pack which this inventor developed previously 本発明の一実施例にかかる薄型バッテリパックの正面図The front view of the thin battery pack concerning one Example of this invention. 図４に示す薄型バッテリパックの平面図4 is a plan view of the thin battery pack shown in FIG. 図４に示す薄型バッテリパックの底面図Bottom view of the thin battery pack shown in FIG. 図４に示す薄型バッテリパックの側面図Side view of thin battery pack shown in FIG. 図４に示す薄型バッテリパックの背面図4 is a rear view of the thin battery pack shown in FIG. 図４に示す薄型バッテリパックの分解斜視図4 is an exploded perspective view of the thin battery pack shown in FIG. 図４に示す薄型バッテリパックの分解断面図4 is an exploded cross-sectional view of the thin battery pack shown in FIG. 図４に示す薄型バッテリパックのＡ−Ａ線断面図AA line sectional view of the thin battery pack shown in FIG. 図４に示す薄型バッテリパックのＢ−Ｂ線断面図BB sectional view of the thin battery pack shown in FIG. 図１０に示す薄型バッテリパックが膨れる状態を示す断面図Sectional drawing which shows the state which the thin battery pack shown in FIG. 10 swells

符号の説明Explanation of symbols

１…薄型電池 １Ｘ…ラミネート電池
１Ａ…第１外装フィルム １Ｂ…第２外装フィルム
１ａ…ラップ部 １ｂ…電極収納部
１ｃ…溝形突出部
１ａｓ…折曲ラップ部 １ａｔ…突出ラップ部
２…回路基板
３…基板ホルダー ３Ａ…周壁 ３Ｂ…凸部
３Ｃ…凹部
４…絶縁枠体 ４Ａ…縦枠 ４Ｂ…横枠
４ａ…電極カバー枠 ４ｂ…底枠
５…金属板 ５Ａ…第１金属板 ５Ｂ…第２金属板
５ｂ…電極表出切欠部 ５ｃ…嵌合凸ツメカバー部
５ｄ…貫通孔
６…ケーシング
７…段差スペース部
８…出力端子
９…出力リード
１０…保護素子
１１…係止溝
１２…係止折曲片
１４…突出部 １４Ａ…嵌合凸ツメ １４Ｂ…中間凸ツメ
１５…リブ
１６…電極窓
１７…ラベル １７Ａ…切欠部
１８…水没判定ラベル
２１…ラミネート電池
２２…上下ケース
２３…プラスチック枠
２４…金属板
３１…ラミネート電池
３２…プラスチック枠
３３…第１金属板
３４…第２金属板
３５…ラベル
３６…出力端子
３７…電極窓
1 ... Thin battery 1X ... Laminated battery
1A ... 1st exterior film 1B ... 2nd exterior film
1a ... Lap part 1b ... Electrode storage part
1c ... Channel-shaped protrusion
DESCRIPTION OF SYMBOLS 1as ... Bending wrap part 1at ... Projection wrap part 2 ... Circuit board 3 ... Substrate holder 3A ... Perimeter wall 3B ... Convex part
3C ... Recess 4 ... Insulating frame 4A ... Vertical frame 4B ... Horizontal frame
4a ... Electrode cover frame 4b ... Bottom frame 5 ... Metal plate 5A ... First metal plate 5B ... Second metal plate
5b ... Electrode exposed notch 5c ... Fitting convex claw cover
5d ... Through-hole 6 ... Casing 7 ... Stepped space part 8 ... Output terminal 9 ... Output lead 10 ... Protection element 11 ... Locking groove 12 ... Locking bent piece 14 ... Projection part 14A ... Fitting convex claw 14B ... Intermediate convex Claw 15 ... Rib
DESCRIPTION OF SYMBOLS 16 ... Electrode window 17 ... Label 17A ... Notch part 18 ... Submergence judgment label 21 ... Laminated battery 22 ... Upper and lower case 23 ... Plastic frame 24 ... Metal plate 31 ... Laminated battery 32 ... Plastic frame 33 ... First metal plate 34 ... Second Metal plate 35 ... Label 36 ... Output terminal 37 ... Electrode window

Claims (6)

薄型電池(1)と、この薄型電池(1)の外周縁に沿って配設されるプラスチック製の絶縁枠体(4)と、この絶縁枠体(4)と薄型電池(1)の両面をカバーする金属板(5)とを備える薄型バッテリーパックであって、
絶縁枠体(4)は、薄型電池(1)の両側面に位置する一対の縦枠(4A)の両端部を横枠(4B)で連結した構造であって、金属板(5)の表面よりも外側に突出する突出部(14)を備えることを特徴とする薄型バッテリーパック。 A thin battery (1), a plastic insulating frame (4) disposed along the outer periphery of the thin battery (1), and both sides of the insulating frame (4) and the thin battery (1) A thin battery pack comprising a metal plate (5) for covering,
The insulating frame (4) has a structure in which both ends of a pair of vertical frames (4A) located on both sides of the thin battery (1) are connected by a horizontal frame (4B), and the surface of the metal plate (5) A thin battery pack comprising a protruding portion (14) protruding outward from the outer side. 絶縁枠体(4)の角部に突出部(14)を設けている請求項１に記載される薄型バッテリパック   2. The thin battery pack according to claim 1, wherein a protrusion (14) is provided at a corner of the insulating frame (4). 絶縁枠体(4)の角部と角部の中間に突出部(14)を設けている請求項１に記載される薄型バッテリパック。   The thin battery pack according to claim 1, wherein a protrusion (14) is provided in the middle between the corners of the insulating frame (4). 突出部(14)が、電気機器取り付け用の嵌合凸ツメ(14A)である請求項１に記載される薄型バッテリパック。   The thin battery pack according to claim 1, wherein the protrusion (14) is a fitting protrusion (14A) for mounting an electric device. 絶縁枠体(4)が出力端子(8)を配設している電極カバー枠(4a)を備えており、この電極カバー枠(4a)に、電気機器取り付け用の嵌合凸ツメ(14A)を突出して設けている請求項４に記載される薄型バッテリーパック。   The insulating frame (4) includes an electrode cover frame (4a) in which the output terminal (8) is disposed, and the electrode cover frame (4a) has a fitting convex claw (14A) for mounting electrical equipment. The thin battery pack according to claim 4, wherein the battery pack is protruded. 金属板(5)の表面にラベル(17)を接着しており、ラベル(17)は嵌合凸ツメ(14A)を突出させる切欠部(17A)を設けて、切欠部(17A)に嵌合凸ツメ(14A)を挿通しており、さらに、ラベル(17)の切欠部(17A)は、挿通部分における嵌合凸ツメ(14A)の断面積よりも大きく開口すると共に、この開口部に水没判定ラベル(18)を配設している請求項１に記載される薄型バッテリパック。   The label (17) is adhered to the surface of the metal plate (5), and the label (17) is provided with a notch (17A) for projecting the fitting convex claw (14A) and is fitted to the notch (17A). The convex claw (14A) is inserted, and the notch (17A) of the label (17) opens larger than the cross-sectional area of the fitting convex claw (14A) at the insertion portion, and is submerged in this opening. The thin battery pack according to claim 1, wherein a determination label (18) is provided.
JP2003314515A 2003-09-05 2003-09-05 Thin battery pack Pending JP2005085543A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
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ID=34415089

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Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007048722A (en) * 2005-08-12 2007-02-22 Sony Corp Secondary battery
JP2007234550A (en) * 2006-03-03 2007-09-13 Sanyo Electric Co Ltd Battery pack
JP2009277504A (en) * 2008-05-14 2009-11-26 Sanyo Electric Co Ltd Pack battery
US7855012B2 (en) 2005-08-12 2010-12-21 Sony Corporation Secondary battery
JP2011505665A (en) * 2007-11-29 2011-02-24 エルジー・ケム・リミテッド Secondary battery pack with precise structure
US8846221B2 (en) 2008-04-24 2014-09-30 Samsung Sdi Co., Ltd. Battery pack
JP2016534529A (en) * 2013-09-10 2016-11-04 エルジー・ケム・リミテッド Secondary battery frame and battery pack including the same

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007048722A (en) * 2005-08-12 2007-02-22 Sony Corp Secondary battery
US7855012B2 (en) 2005-08-12 2010-12-21 Sony Corporation Secondary battery
JP4604913B2 (en) * 2005-08-12 2011-01-05 ソニー株式会社 Secondary battery
JP2007234550A (en) * 2006-03-03 2007-09-13 Sanyo Electric Co Ltd Battery pack
JP2011505665A (en) * 2007-11-29 2011-02-24 エルジー・ケム・リミテッド Secondary battery pack with precise structure
US8846221B2 (en) 2008-04-24 2014-09-30 Samsung Sdi Co., Ltd. Battery pack
JP2009277504A (en) * 2008-05-14 2009-11-26 Sanyo Electric Co Ltd Pack battery
JP2016534529A (en) * 2013-09-10 2016-11-04 エルジー・ケム・リミテッド Secondary battery frame and battery pack including the same

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