JP2005183157A - Thin type battery pack - Google Patents

Thin type battery pack Download PDF

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Publication number
JP2005183157A
JP2005183157A JP2003421902A JP2003421902A JP2005183157A JP 2005183157 A JP2005183157 A JP 2005183157A JP 2003421902 A JP2003421902 A JP 2003421902A JP 2003421902 A JP2003421902 A JP 2003421902A JP 2005183157 A JP2005183157 A JP 2005183157A
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circuit board
battery
battery pack
laminated
insulating plate
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JP4488728B2 (en
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Hideyo Morita
秀世 森田
Takashi Ishihama
敬司 石濱
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Sanyo Electric Co Ltd
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Sanyo Electric Co Ltd
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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 firmly connect with a circuit substrate and a laminate cell storing with a structure without protruding a thick circuit substrate on a surface. <P>SOLUTION: The thin type battery pack is equipped with a laminate cell 1 covering a cell element 11 with an outer package film 10, wrapping the outer package film 10 at an outer side of the cell element 11 and storing the cell element 11 inside the outer package film 10 by joining a wrap part 12, and a circuit substrate 2 connected to an output lead 4 of the laminate cell 1. The laminate cell 1 includes a terrace part 13 protruding the wrap part 12 of the outer package film 10 outside in a part of an outer periphery. The circuit substrate 2 is arranged at an outside of the terrace part 13. The thin type battery pack has arranged a reinforcing insulation plate 3 extended from a surface of the circuit substrate 2 to a surface of the terrace part 13 and laminated the reinforcing insulation plate 3 on the circuit substrate 2 and the terrace part 13, with which, the reinforcing insulation plate 3 and the circuit substrate 2 are connected to the laminate cell 1. <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を備え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 laminate battery such as a polymer battery.

非常に薄くできる二次電池としてラミネート電池が開発されている。ラミネート電池は、電池素子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池素子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池素子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。この薄いラミネート電池を使用して、薄型バッテリーパックを製作する技術は開発されている。（特許文献１参照）
特開２０００−１５６２０８号公報 Laminated batteries have been developed as secondary batteries that can be made very thin. A laminate battery is manufactured by laminating an exterior film on both sides of a battery element, and tightly adhering the exterior films on both sides at the periphery of the battery element. The laminated battery having this structure has a feature that it can be made thinner and larger than a battery in which a battery element is inserted in a metal outer can. A technique for manufacturing a thin battery pack using this thin laminated battery has been developed. (See Patent Document 1)
JP 2000-156208 A

この公報に記載される薄型バッテリーパックは、図１に示すように、外装フィルムをラップして溶着しているテラス部２３に、電池の制御回路を実現する回路基板２２を配置している。テラス部２３は両側に側壁２４がある。側壁２４も外装フィルムのラップ部で、これがテラス部２３の補強リブの働きをしてテラス部２３の曲げ強度を向上させる。したがって、この構造の薄型バッテリーパックは、テラス部２３にできる空隙を有効利用して回路基板２２を配置できる。   In the thin battery pack described in this publication, as shown in FIG. 1, a circuit board 22 that realizes a battery control circuit is arranged on a terrace portion 23 where an exterior film is wrapped and welded. The terrace portion 23 has side walls 24 on both sides. The side wall 24 is also a wrap portion of the exterior film, which acts as a reinforcing rib of the terrace portion 23 and improves the bending strength of the terrace portion 23. Therefore, in the thin battery pack having this structure, the circuit board 22 can be arranged by effectively utilizing the gap formed in the terrace portion 23.

しかしながら、この構造の薄型バッテリーパックは、回路基板２２の厚さがラミネート電池２１の厚さによって制約を受ける。ラミネート電池が薄くなると、回路基板も薄くする必要がある。回路基板が厚いとラミネート電池の表面から突出するからである。このため、この構造の薄型バッテリーパックは、ラミネート電池が薄くなると、回路基板が表面に突出する欠点がある。薄型バッテリーパックは、全体を薄くすることが大切である。一部が厚い薄型バッテリーパックは、電気機器に装着される状態において、厚い部分を収納するために専用のスペースを設ける必要がある。薄型バッテリーパックを収納する部分に特別なスペースを設ける構造は、機器側の設計の自由度を大きく制約する。この弊害を避けるために、薄型バッテリーパックは全体を薄くすることが大切である。   However, in the thin battery pack having this structure, the thickness of the circuit board 22 is restricted by the thickness of the laminated battery 21. As the laminate battery becomes thinner, the circuit board also needs to be thinner. This is because a thick circuit board protrudes from the surface of the laminated battery. For this reason, the thin battery pack having this structure has a drawback that the circuit board protrudes to the surface when the laminated battery becomes thin. It is important to make the entire thin battery pack thinner. A thin battery pack that is partly thick needs to be provided with a dedicated space in order to accommodate the thick part when it is mounted on an electrical device. The structure in which a special space is provided in the portion for storing the thin battery pack greatly restricts the degree of design freedom on the device side. In order to avoid this problem, it is important to make the thin battery pack thin.

本発明は、このことを実現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、厚い回路基板を表面に突出しない構造で収納しながら、回路基板とラミネート電池をしっかりと連結できる薄型バッテリーパックを提供することにある。   The present invention has been developed for the purpose of realizing this. An important object of the present invention is to provide a thin battery pack capable of firmly connecting a circuit board and a laminated battery while accommodating a thick circuit board in a structure that does not protrude from the surface.

本発明の薄型バッテリーパックは、ラミネート電池１とこのラミネート電池１の出力リード４に接続している回路基板２とを備える。ラミネート電池１は、正負の電極を備える電池素子１１を外装フィルム１０で被覆し、電池素子１１の外側で外装フィルム１０をラップし、このラップ部１２を接合して外装フィルム１０の内部に電池素子１１を内蔵している。さらに、ラミネート電池１は、外周の一部に、外装フィルム１０のラップ部１２を外側に突出させているテラス部１３を有する。回路基板２は、テラス部１３の外側に配置している。薄型バッテリパックは、この回路基板２の表面からテラス部１３の表面に伸びる補強絶縁プレート３を配置して、回路基板２とテラス部１３に補強絶縁プレート３を積層しており、補強絶縁プレート３と回路基板２をラミネート電池１に連結している。   The thin battery pack of the present invention includes a laminated battery 1 and a circuit board 2 connected to an output lead 4 of the laminated battery 1. The laminate battery 1 is formed by covering a battery element 11 having positive and negative electrodes with an exterior film 10, wrapping the exterior film 10 on the outside of the battery element 11, and joining the wrap portion 12 to the battery element 10 inside the exterior film 10. 11 is built-in. Furthermore, the laminated battery 1 has a terrace portion 13 that projects the wrap portion 12 of the exterior film 10 outwardly at a part of the outer periphery. The circuit board 2 is disposed outside the terrace portion 13. In the thin battery pack, a reinforcing insulating plate 3 extending from the surface of the circuit board 2 to the surface of the terrace portion 13 is disposed, and the reinforcing insulating plate 3 is laminated on the circuit board 2 and the terrace portion 13. The circuit board 2 is connected to the laminated battery 1.

本発明の薄型バッテリーパックは、テラス部１３の両側に折曲ラップ部１３Ａを設けることができる。   The thin battery pack of the present invention can be provided with bent wrap portions 13 </ b> A on both sides of the terrace portion 13.

さらに、本発明の薄型バッテリパックは、回路基板２の表面に電子部品７を固定すると共に、この電子部品７を入れる貫通孔３Ｂを補強絶縁プレート３に設けて、電子部品７を補強絶縁プレート３の貫通孔３Ｂに入れて、回路基板２を補強絶縁プレート３に積層することができる。   Further, in the thin battery pack of the present invention, the electronic component 7 is fixed to the surface of the circuit board 2, and the through hole 3 </ b> B for inserting the electronic component 7 is provided in the reinforcing insulating plate 3. The circuit board 2 can be laminated on the reinforcing insulating plate 3 in the through hole 3B.

さらに、本発明の薄型バッテリーパックは、補強絶縁プレート３と回路基板２とラミネート電池１の外側にテープ８を接着して、テープ８で補強絶縁プレート３と回路基板２をラミネート電池１に連結することができる。   Further, in the thin battery pack of the present invention, the tape 8 is bonded to the outside of the reinforcing insulating plate 3, the circuit board 2 and the laminated battery 1, and the reinforcing insulating plate 3 and the circuit board 2 are connected to the laminated battery 1 with the tape 8. be able to.

さらに、本発明の薄型バッテリーパックは、補強絶縁プレート３をプラスチックの成形体とすることができる。さらに、本発明の薄型バッテリーパックは、回路基板２に、リード線５を介してコネクター６を連結することができる。さらにまた、本発明の薄型バッテリーパックは、回路基板２に出力端子を固定することができる。   Furthermore, in the thin battery pack of the present invention, the reinforcing insulating plate 3 can be a plastic molded body. Furthermore, the thin battery pack of the present invention can connect the connector 6 to the circuit board 2 via the lead wire 5. Furthermore, the thin battery pack of the present invention can fix the output terminal to the circuit board 2.

本発明の薄型バッテリパックは、厚い回路基板を表面に突出しない構造で収納しながら、回路基板とラミネート電池をしっかりと連結できる特長がある。それは、本発明の薄型バッテリーパックが、回路基板をラミネート電池のテラス部の外側に配置しており、この回路基板の表面からテラス部の表面に伸びる補強絶縁プレートを配置して、補強絶縁プレートと回路基板をラミネート電池に連結しているからである。この構造の薄型バッテリパックは、ラミネート電池の外装フィルムのラップ部であるテラス部に回路基板を配置するのでなく、テラス部の外側に回路基板を配置するので、テラス部の厚みに影響を受けることなく回路基板を厚くできる。このため、回路基板を表面に突出させることなく収納して、薄型バッテリパック全体を薄くできる。さらに、本発明の薄型バッテリパックは、回路基板とテラス部に補強絶縁プレートを積層して、補強絶縁プレートと回路基板をラミネート電池に連結するので、この補強絶縁プレートを介して回路基板とラミネート電池をしっかりと連結できる特長もある。   The thin battery pack of the present invention has an advantage that the circuit board and the laminated battery can be firmly connected while storing the thick circuit board in a structure that does not protrude on the surface. In the thin battery pack of the present invention, the circuit board is disposed outside the terrace portion of the laminated battery, and a reinforcing insulating plate extending from the surface of the circuit board to the surface of the terrace portion is disposed, This is because the circuit board is connected to the laminated battery. Thin battery packs with this structure are not affected by the thickness of the terrace part because the circuit board is placed outside the terrace part instead of being placed on the terrace part, which is the wrap part of the exterior film of the laminated battery. The circuit board can be made thicker. For this reason, the whole circuit board can be made thin by storing the circuit board without protruding on the surface. Further, in the thin battery pack of the present invention, the reinforcing insulating plate is laminated on the circuit board and the terrace portion, and the reinforcing insulating plate and the circuit board are connected to the laminated battery. Therefore, the circuit board and the laminated battery are connected via the reinforcing insulating plate. There is also a feature that can be connected firmly.

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やすいように、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 scope of claims, numbers corresponding to the members shown in the examples are indicated in the “claims” and “means for solving problems” sections. It is added to the members. However, the members shown in the claims are not limited to the members in the embodiments.

図２ないし図４に示す薄型バッテリーパックは、ラミネート電池１と、このラミネート電池１の出力リード４に接続され、かつラミネート電池１に固定している回路基板２と、この回路基板２に積層している補強絶縁プレート３とを備える。   The thin battery pack shown in FIGS. 2 to 4 is laminated on the laminated battery 1, the circuit board 2 connected to the output lead 4 of the laminated battery 1 and fixed to the laminated battery 1, and the circuit board 2. The reinforcing insulating plate 3 is provided.

ラミネート電池１は、２枚の外装フィルム１０の間に電池素子１１を挟んで、２枚の外装フィルム１０を電池素子１１の外側でラップし、このラップ部１２を接合して、内部に電池素子１１を内蔵している。図のラミネート電池１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。ラミネート電池は、たとえば、ニッケル水素電池等、他の全ての二次電池とすることもできる。図のラミネート電池１は四角形で、両側の辺とひとつの辺で外装フィルム１０を積層してラップ部１２としている。ラミネート電池１は、ラップ部１２において、２枚の外装フィルム１０を、接着、あるいは溶着等の方法で気密に接合している。図のラミネート電池１は、１枚の外装フィルム１０を電池素子１１のひとつの辺で折り返して、電池素子１１の両面を被覆している。この構造のラミネート電池１は、電池素子１１の１辺に沿って外装フィルム１０を折り返すので、四角形のひとつの辺にはラップ部がなく、３辺にラップ部１２が設けられる。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、電池素子の両面に分離された２枚の外装フィルムを重ね、電池素子周囲の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、電池素子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。   In the laminated battery 1, the battery element 11 is sandwiched between the two exterior films 10, the two exterior films 10 are wrapped outside the battery element 11, the wrap portion 12 is joined, and the battery element is formed inside. 11 is built-in. The illustrated laminate battery 1 is a polymer battery. However, the present invention does not specify a laminated battery as a polymer battery. The laminated battery may be any other secondary battery such as a nickel metal hydride battery. The laminated battery 1 shown in the figure has a quadrangular shape, and an outer film 10 is laminated on both sides and one side to form a wrap portion 12. In the laminated battery 1, the two exterior films 10 are hermetically bonded by a method such as adhesion or welding at the wrap portion 12. In the illustrated laminate battery 1, a single exterior film 10 is folded at one side of the battery element 11 to cover both surfaces of the battery element 11. In the laminated battery 1 having this structure, the exterior film 10 is folded along one side of the battery element 11, so that one side of the quadrangle has no wrap portion and three lap portions 12 are provided. Although not shown, the laminated battery may have a structure in which wrap portions are provided on the outer periphery of four sides. This laminated battery is manufactured by stacking two exterior films separated on both sides of a battery element and bonding them with four side wraps around the battery element. Furthermore, even if the battery element has a square shape, the outer shape of the laminate battery may be different from the square shape 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２のラミネート電池１は、電池素子１１の下面に積層される外装フィルム１０を平面状ないし平面に近い形状として、電池素子１１の上面に積層する外装フィルム１０を電池素子１１の周囲に沿って下方に折曲して、下面の外装フィルム１０に積層して、ラップ部１２を接合している。   The laminated battery 1 shown in FIG. 2 has an exterior film 10 laminated on the lower surface of the battery element 11 having a flat shape or a shape close to a plane, and the outer film 10 laminated on the upper surface of the battery element 11 is arranged around the battery element 11. The wrap portion 12 is joined by bending downward and laminating it on the exterior film 10 on the lower surface.

図２と図３のラミネート電池１は、外周の１辺にテラス部１３を設けている。テラス部１３は、外装フィルム１０のラップ部１２であって、電池素子１１から外側に突出している。テラス部１３は、電池素子１１の両面と平行な面内に位置する。図のラミネート電池１は、テラス部１３を電池素子１１の底面側に連結している。さらに、図のラミネート電池１は、テラス部１３の両側に折曲ラップ部１３Ａを連結して設けている。折曲ラップ部１３Ａは、図５の断面図に示すように、電池素子１１の両側に突出するラップ部１２を、矢印で示すように電池素子１１の側面に沿うように９０度折曲して設けられる。この形状のテラス部１３は、両側の折曲ラップ部１３Ａが補強リブとなって、テラス部１３の折曲強度を強くできる。図２と図３のラミネート電池１は、折曲ラップ部１３Ａの幅を電池素子１１の厚さよりも狭くしている。ただ、折曲ラップ部は、電池素子の厚さにほぼ等しい幅とすることができる。また、テラス部には必ずしも折曲ラップ部を設ける必要はない。   2 and 3 has a terrace portion 13 on one side of the outer periphery. The terrace portion 13 is a wrap portion 12 of the exterior film 10 and protrudes outward from the battery element 11. The terrace portion 13 is located in a plane parallel to both surfaces of the battery element 11. In the illustrated laminate battery 1, the terrace portion 13 is connected to the bottom surface side of the battery element 11. Further, the laminated battery 1 shown in the figure is provided with a bent wrap portion 13A connected to both sides of the terrace portion 13. As shown in the cross-sectional view of FIG. 5, the bent wrap part 13A is formed by bending the wrap part 12 protruding on both sides of the battery element 11 by 90 degrees along the side surface of the battery element 11 as indicated by an arrow. Provided. In the terrace portion 13 having this shape, the folding wrap portions 13A on both sides serve as reinforcing ribs, and the bending strength of the terrace portion 13 can be increased. In the laminated battery 1 shown in FIGS. 2 and 3, the width of the folding wrap portion 13 </ b> A is narrower than the thickness of the battery element 11. However, the bent wrap portion can have a width substantially equal to the thickness of the battery element. Further, it is not always necessary to provide a bent wrap portion on the terrace portion.

ラミネート電池１は、テラス部１３となるラップ部１２に出力リード４を設けている。出力リード４は、図４に示すように、互いに積層される外装フィルム１０の間に気密に挟着されてラップ部１２の外部に引き出される。出力リード４は回路基板２に接続している。   The laminate battery 1 is provided with output leads 4 on the wrap portion 12 that becomes the terrace portion 13. As shown in FIG. 4, the output lead 4 is airtightly sandwiched between the exterior films 10 stacked on each other and pulled out of the wrap portion 12. The output lead 4 is connected to the circuit board 2.

回路基板２は、テラス部１３の外側に配置されて、ラミネート電池１に接続される。回路基板２は、フェノール基板やエポキシ基板の表面に導電層を設けたプリント基板である。図の回路基板２は、上面に出力用のリード線５を接続している。リード線５は、半田付けして回路基板２に接続され、その先端に電気機器に接続するコネクター６を連結している。図示しないが、回路基板に出力端子を固定して、出力端子を電気機器に接続する構造とすることもできる。   The circuit board 2 is disposed outside the terrace portion 13 and connected to the laminated battery 1. The circuit board 2 is a printed board in which a conductive layer is provided on the surface of a phenol board or an epoxy board. The circuit board 2 shown in the figure has output lead wires 5 connected to the upper surface. The lead wire 5 is soldered and connected to the circuit board 2, and a connector 6 connected to an electrical device is connected to the tip of the lead wire 5. Although not shown, an output terminal may be fixed to a circuit board, and the output terminal may be connected to an electric device.

回路基板２は、ラミネート電池１の保護回路を実現する電子部品７を実装している。電子部品７は、回路基板２の表面に突出して固定される。保護回路は、ラミネート電池１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１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、テラス部１３の外側にあって、テラス部１３と平行に配置される。図の回路基板２は長方形で、テラス部１３の両側から突出しないように、テラス部１３の全長にほぼ等しい長さとしている。ただ、回路基板は、テラス部よりも短くしてテラス部から突出しないようにすることもできる。   The circuit board 2 is mounted with an electronic component 7 that realizes a protection circuit for the laminated battery 1. The electronic component 7 protrudes and is fixed to the surface of the circuit board 2. The protection circuit is a circuit that controls the charge / discharge current to prevent the laminate battery 1 from being overcharged or overdischarged, a circuit that detects the overcurrent and interrupts the current, and the current that is supplied when the laminated battery 1 reaches an abnormally high temperature. A circuit that shuts off. The circuit board 2 is outside the terrace portion 13 and is arranged in parallel with the terrace portion 13. The circuit board 2 shown in the figure is rectangular and has a length substantially equal to the entire length of the terrace portion 13 so as not to protrude from both sides of the terrace portion 13. However, the circuit board may be shorter than the terrace portion so as not to protrude from the terrace portion.

回路基板２は、図４に示すように、テラス部１３と同一平面に、正確には底面がテラス部１３と同一平面として、出力リード４を介してラミネート電池１に連結される。また回路基板２は、テラス部１３に接近して、テラス部１３と平行に配設される。   As shown in FIG. 4, the circuit board 2 is connected to the laminated battery 1 through the output lead 4 with the same plane as the terrace portion 13, more precisely with the bottom surface being the same plane as the terrace portion 13. Further, the circuit board 2 is disposed in parallel with the terrace portion 13 in proximity to the terrace portion 13.

補強絶縁プレート３は、回路基板２とテラス部１３の表面に積層される。補強絶縁プレート３は、回路基板２とテラス部１３の表面に積層される幅を有する板状にプラスチック等の絶縁材を成形したものである。補強絶縁プレート３は、回路基板２とテラス部１３の表面を保護しながら補強して連結する。補強絶縁プレート３は、図４の断面図に示すように、その上面を、電池素子１１の部分の上面と同一平面としている。図４の補強絶縁プレート３は、下面に突出部３Ａを設けて、上面を電池素子１１部分の上面と同一平面としている。補強絶縁プレート３は全体の厚さを調整して、その上面を電池素子１１部分の上面と同一平面とすることができる。   The reinforcing insulating plate 3 is laminated on the surface of the circuit board 2 and the terrace portion 13. The reinforcing insulating plate 3 is formed by molding an insulating material such as plastic into a plate shape having a width laminated on the surfaces of the circuit board 2 and the terrace portion 13. The reinforcing insulating plate 3 is reinforced and connected while protecting the surface of the circuit board 2 and the terrace portion 13. As shown in the sectional view of FIG. 4, the reinforcing insulating plate 3 has an upper surface that is flush with the upper surface of the battery element 11 portion. The reinforcing insulating plate 3 in FIG. 4 is provided with a protruding portion 3A on the lower surface, and the upper surface is flush with the upper surface of the battery element 11 portion. The overall thickness of the reinforcing insulating plate 3 can be adjusted so that the upper surface thereof is flush with the upper surface of the battery element 11 portion.

図の補強絶縁プレート３は、回路基板２に固定している電子部品７を入れる貫通孔３Ｂを設けている。この貫通孔３Ｂに電子部品７を入れて、回路基板２を補強絶縁プレート３に積層している。図示しないが、回路基板から突出する電子部品の高さが補強絶縁プレートの厚さに比較して低い場合、補強絶縁プレートに電子部品を案内する凹部を設けて、凹部に電子部品を案内して、回路基板に補強絶縁プレートを積層することができる。この補強絶縁プレートは、回路基板との対向面に電子部品を案内する凹部を設ける。   The reinforcing insulating plate 3 in the figure is provided with a through hole 3 </ b> B into which an electronic component 7 fixed to the circuit board 2 is inserted. The electronic component 7 is put in the through hole 3B, and the circuit board 2 is laminated on the reinforcing insulating plate 3. Although not shown, when the height of the electronic component protruding from the circuit board is lower than the thickness of the reinforcing insulating plate, a concave portion for guiding the electronic component is provided on the reinforcing insulating plate, and the electronic component is guided to the concave portion. The reinforcing insulating plate can be laminated on the circuit board. The reinforcing insulating plate is provided with a recess for guiding the electronic component on the surface facing the circuit board.

図３の薄型バッテリーパックは、補強絶縁プレート３と回路基板２とラミネート電池１の外側にテープ８を接着し、このテープ８で補強絶縁プレート３と回路基板２をラミネート電池１に連結している。ただし、補強絶縁プレートは、接着して回路基板とラミネート電池に固定することができる。また、補強絶縁プレートを回路基板とテラス部に接着して、さらにその外側にテープを接着して連結することもできる。   In the thin battery pack of FIG. 3, a tape 8 is bonded to the outside of the reinforcing insulating plate 3, the circuit board 2, and the laminated battery 1, and the reinforcing insulating plate 3 and the circuit board 2 are connected to the laminated battery 1 with this tape 8. . However, the reinforcing insulating plate can be bonded and fixed to the circuit board and the laminated battery. Further, the reinforcing insulating plate can be bonded to the circuit board and the terrace portion, and further, a tape can be bonded to the outside to connect them.

補強絶縁プレート３と回路基板２とラミネート電池１とを連結している図３の薄型バッテリーパックは、この状態でケースに入れることなく、電気機器に組み込むことができる。また、図４の鎖線で示すように、図３の薄型バッテリーパックを金属ケースやプラスチックケース等の外装ケース９に入れて、電気機器に脱着できる薄型バッテリーパックとすることができる。   The thin battery pack of FIG. 3 in which the reinforcing insulating plate 3, the circuit board 2, and the laminated battery 1 are connected can be incorporated into an electric device without being put in the case in this state. Further, as shown by a chain line in FIG. 4, the thin battery pack of FIG. 3 can be put in an outer case 9 such as a metal case or a plastic case to be a thin battery pack that can be attached to and detached from an electric device.

従来の薄型バッテリパックの一例を示す斜視図である。It is a perspective view which shows an example of the conventional thin battery pack. 本発明の一実施例にかかる薄型バッテリパックの分解斜視図である。It is a disassembled perspective view of the thin battery pack concerning one Example of this invention. 図２に示す薄型バッテリパックを組み立てた状態を示す斜視図である。It is a perspective view which shows the state which assembled the thin battery pack shown in FIG. 図３に示す薄型バッテリパックの端部の拡大断面図である。It is an expanded sectional view of the edge part of the thin battery pack shown in FIG. ラミネート電池の側部の拡大断面図であるIt is an expanded sectional view of the side part of a laminate battery.

符号の説明Explanation of symbols

１…ラミネート電池
２…回路基板
３…補強絶縁プレート ３Ａ…突出部 ３Ｂ…貫通孔
４…出力リード
５…リード線
６…コネクター
７…電子部品
８…テープ
９…外装ケース
１０…外装フィルム
１１…電池素子
１２…ラップ部
１３…テラス部 １３Ａ…折曲ラップ部
２１…ラミネート電池
２２…回路基板
２３…テラス部
２４…側壁
DESCRIPTION OF SYMBOLS 1 ... Laminated battery 2 ... Circuit board 3 ... Reinforcement insulation plate 3A ... Protruding part 3B ... Through-hole 4 ... Output lead 5 ... Lead wire 6 ... Connector 7 ... Electronic component 8 ... Tape 9 ... Exterior case 10 ... Exterior film 11 ... Battery Element 12 ... Lap part 13 ... Terrace part 13A ... Bending wrap part 21 ... Laminated battery 22 ... Circuit board 23 ... Terrace part 24 ... Side wall

Claims (7)

正負の電極を備える電池素子(11)を外装フィルム(10)で被覆し、電池素子(11)の外側で外装フィルム(10)をラップし、このラップ部(12)を接合して外装フィルム(10)の内部に電池素子(11)を内蔵しているラミネート電池(1)と、このラミネート電池(1)の出力リード(4)に接続している回路基板(2)とを備えるバッテリーパックであって、
ラミネート電池(1)は、外周の一部に、外装フィルム(10)のラップ部(12)を外側に突出させているテラス部(13)を有し、
回路基板(2)はテラス部(13)の外側に配置され、この回路基板(2)の表面からテラス部(13)の表面に伸びる補強絶縁プレート(3)を配置して、回路基板(2)とテラス部(13)に補強絶縁プレート(3)を積層しており、補強絶縁プレート(3)と回路基板(2)をラミネート電池(1)に連結してなる薄型バッテリーパック。 The battery element (11) having positive and negative electrodes is covered with an exterior film (10), the exterior film (10) is wrapped outside the battery element (11), and the wrap portion (12) is joined to the exterior film ( 10) a battery pack comprising a laminated battery (1) having a battery element (11) built in and a circuit board (2) connected to the output lead (4) of the laminated battery (1). There,
The laminate battery (1) has a terrace portion (13) that protrudes outwardly from the wrap portion (12) of the exterior film (10) on a part of the outer periphery.
The circuit board (2) is arranged outside the terrace part (13), and a reinforcing insulating plate (3) extending from the surface of the circuit board (2) to the surface of the terrace part (13) is arranged, and the circuit board (2 ) And the terrace portion (13) are laminated with a reinforcing insulating plate (3), and the thin insulating battery pack is formed by connecting the reinforcing insulating plate (3) and the circuit board (2) to the laminated battery (1). テラス部(13)が両側に折曲ラップ部(13A)を有する請求項１に記載される薄型バッテリーパック。   The thin battery pack according to claim 1, wherein the terrace portion (13) has bent wrap portions (13A) on both sides. 回路基板(2)の表面に電子部品(7)を固定しており、この電子部品(7)を入れる貫通孔(3B)を補強絶縁プレート(3)に設けており、電子部品(7)を補強絶縁プレート(3)の貫通孔(3B)に入れて、回路基板(2)を補強絶縁プレート(3)に積層している請求項１に記載される薄型バッテリーパック。   The electronic component (7) is fixed to the surface of the circuit board (2), and a through hole (3B) for inserting the electronic component (7) is provided in the reinforcing insulating plate (3). The thin battery pack according to claim 1, wherein the circuit board (2) is laminated on the reinforcing insulating plate (3) in the through hole (3B) of the reinforcing insulating plate (3). 補強絶縁プレート(3)と回路基板(2)とラミネート電池(1)の外側にテープ(8)を接着して、テープ(8)で補強絶縁プレート(3)と回路基板(2)とラミネート電池(1)を連結している請求項１に記載される薄型バッテリーパック。   Adhere the tape (8) to the outside of the reinforcing insulation plate (3), circuit board (2), and laminate battery (1), and use the tape (8) to reinforce the insulation plate (3), circuit board (2), and laminate battery. The thin battery pack according to claim 1, wherein (1) is connected. 補強絶縁プレート(3)がプラスチックの成形体である請求項１に記載される薄型バッテリーパック。   The thin battery pack according to claim 1, wherein the reinforcing insulating plate (3) is a plastic molded body. 回路基板(2)にリード線(5)を介してコネクター(6)を連結している請求項１に記載される薄型バッテリーパック。   The thin battery pack according to claim 1, wherein the connector (6) is connected to the circuit board (2) via the lead wire (5). 回路基板(2)に出力端子を固定している請求項１に記載される薄型バッテリーパック。
The thin battery pack according to claim 1, wherein an output terminal is fixed to the circuit board (2).
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