JP4562426B2 - Battery pack - Google Patents

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JP4562426B2
JP4562426B2 JP2004162200A JP2004162200A JP4562426B2 JP 4562426 B2 JP4562426 B2 JP 4562426B2 JP 2004162200 A JP2004162200 A JP 2004162200A JP 2004162200 A JP2004162200 A JP 2004162200A JP 4562426 B2 JP4562426 B2 JP 4562426B2
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battery
case
side plate
label
plate
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JP2005346964A (en
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河原　　武志
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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

Description

本発明は、保護素子が実装された回路基板が接続された電池をケースに収納した電池パックに関する。   The present invention relates to a battery pack in which a battery to which a circuit board on which a protection element is mounted is connected is housed in a case.

小型電子機器又は携帯電子機器などの駆動用電源として、正極及び負極を含む発電要素を電池ケースに収納した電池と、該電池に接続され電池を保護する保護素子が実装された保護回路基板とを外装ケースに収納した電池パックが用いられている。   As a driving power source for small electronic devices or portable electronic devices, a battery in which a power generation element including a positive electrode and a negative electrode is housed in a battery case, and a protection circuit board on which a protection element connected to the battery and protecting the battery is mounted. A battery pack stored in an outer case is used.

電池パックは、２つのケース半体の一方のケース半体に電池及び保護回路基板を収納し、他方のケース半体を超音波溶着により前記一方のケース半体に固着してケースを一体化することにより完成される。   The battery pack accommodates the battery and the protective circuit board in one case half of the two case halves, and the other case half is fixed to the one case half by ultrasonic welding to integrate the case. To be completed.

図７は従来の板状の電池パックの電池の肉厚方向の断面図である。図において、１は電池であり、下側ケース５２に電池１を収容した後に上側ケース５１を下側ケース５２に超音波溶着により固着している。ラベル５３は上側ケース５１に貼付してある。   FIG. 7 is a sectional view in the thickness direction of a battery of a conventional plate-shaped battery pack. In the figure, reference numeral 1 denotes a battery. After the battery 1 is accommodated in the lower case 52, the upper case 51 is fixed to the lower case 52 by ultrasonic welding. The label 53 is affixed to the upper case 51.

また、長方形状の電池を収納した一方のケース半体を他方のケース半体に嵌合し、合成樹脂製又は合成紙製の外装ラベルを巻きつけた扁平型の電池パックがある。ケースの縁部に当接する外装ラベルの厚みを、ケースの平坦部に当接する外装ラベルの厚みより薄くすることにより、外装ラベルをケースの外周に沿って巻きつける場合に、ケースの縁部において、外装ラベルを巻きつけ易くして、外装ラベルの巻きつけ作業を容易にすることができる電池パックも提案されている（特許文献１参照）。
特開２００３−７７４３５号公報 Further, there is a flat battery pack in which one case half containing a rectangular battery is fitted into the other case half and a synthetic resin or synthetic paper outer label is wound. When winding the exterior label along the outer periphery of the case by making the thickness of the exterior label in contact with the edge of the case thinner than the thickness of the exterior label in contact with the flat portion of the case, at the edge of the case, There has also been proposed a battery pack that makes it easy to wind an exterior label and facilitates the operation of winding the exterior label (see Patent Document 1).
JP 2003-77435 A

しかしながら、従来の電池パックにあっては、一方のケース半体に電池を収納し、他方のケース半体を超音波溶着により前記一方のケース半体に固着してケースを一体化するため、電池パックの厚みには、電池自身の厚み及びケース半体夫々の肉厚が含まれ、電池パックの薄型化には限界があった。   However, in the conventional battery pack, the battery is housed in one case half, and the other case half is fixed to the one case half by ultrasonic welding so that the case is integrated. The thickness of the pack includes the thickness of the battery itself and the thickness of each half of the case, and there is a limit to reducing the thickness of the battery pack.

また、特許文献１の電池パックにあっても、外装ラベルの巻きつけ作業を容易にすることができるものの、従来の電池パックと同様、ケース半体夫々の肉厚により電池パックの肉厚寸法が大きくなり、電池パックの薄型化が望まれていた。   Further, even in the battery pack of Patent Document 1, although the outer label winding work can be facilitated, the thickness of the battery pack depends on the thickness of each case half as in the case of the conventional battery pack. As the size of the battery pack increases, it has been desired to reduce the thickness of the battery pack.

本発明は斯かる事情に鑑みてなされたものであり、側板を周設した枠体を有し、電池の上面を露出して収納する電池外装ケース、該電池外装ケースに嵌合して回路基板を収納する基板ケース、及び前記電池外装ケース及び基板ケースを巻回したラベルを備えることより、従来に比較して、薄型化することができる電池パックを提供することを目的とする。   SUMMARY OF THE INVENTION The present invention has been made in view of such circumstances, and has a frame having a side plate provided around it, a battery outer case that exposes and stores the upper surface of the battery, and a circuit board that is fitted to the battery outer case. An object of the present invention is to provide a battery pack that can be reduced in thickness as compared with the prior art by including a substrate case for storing the battery and a label around which the battery outer case and the substrate case are wound.

また、本発明の他の目的は、内周に凸部を設けた貫通孔に、該凸部に嵌合する切り欠き部を設けた突起部を挿通することにより、超音波溶着が不要な電池パックを提供することにある。   Another object of the present invention is to provide a battery that does not require ultrasonic welding by inserting a projection provided with a notch that fits into the projection into a through-hole provided with a projection on the inner periphery. To provide a pack.

また、本発明の他の目的は、ラベルが当接した電池外装ケースの側板及び基板ケースの前記側板に連なる側板の少なくとも一方の外周面を、前記電池外装ケースの側板の高さ方向に沿って凸状に湾曲させることにより、ラベルの巻回作業を容易にすることができる電池パックを提供することにある。   Another object of the present invention is to provide an outer peripheral surface of at least one of the side plate of the battery outer case and the side plate connected to the side plate of the board case along the height direction of the side plate of the battery outer case. An object of the present invention is to provide a battery pack capable of facilitating a label winding operation by curving into a convex shape.

第１発明に係る電池パックは、保護素子を実装した回路基板を接続した電池と、側板を周設した枠体を有し、前記電池を収納する電池外装ケースと、前記側板を挟んで前記電池と対向して配置された前記回路基板を収納する基板ケースとを備える電池パックであって、前記側板には、前記回路基板側に前記基板ケースと嵌合する嵌合部を設け、前記電池外装ケース及び基板ケースに巻回したラベルを備えることを特徴とする。   A battery pack according to a first aspect of the present invention includes a battery connected to a circuit board on which a protection element is mounted, a frame having a side plate provided around it, a battery outer case for housing the battery, and the battery sandwiched between the side plates. A battery case including a circuit board case that stores the circuit board disposed opposite to the battery board, wherein the side plate is provided with a fitting portion that engages with the circuit board case on the circuit board side, and the battery exterior A label wound around the case and the substrate case is provided.

第２発明に係る電池パックは、第１発明において、前記基板ケースは、前記側板と嵌合し内周に凸部を設けた貫通孔を有し、前記嵌合部は、前記貫通孔に挿通され、前記凸部に嵌合する切り欠き部を設けた突起部を有することを特徴とする。   The battery pack according to a second aspect of the present invention is the battery pack according to the first aspect, wherein the board case has a through hole that is fitted to the side plate and has a convex portion on the inner periphery, and the fitting portion is inserted into the through hole. And a protrusion having a notch that fits into the protrusion.

第３発明に係る電池パックは、第１発明又は第２発明において、前記基板ケースは、前記電池外装ケースの側板に連なる側板を有し、前記ラベルが当接した前記電池外装ケース及び基板ケースの少なくとも一方の側板の外周面は、前記電池外装ケースの側板の高さ方向に沿って凸状に湾曲していることを特徴とする。   According to a third aspect of the present invention, there is provided the battery pack according to the first or second aspect, wherein the substrate case includes a side plate connected to a side plate of the battery outer case, and the battery outer case and the substrate case in contact with the label. The outer peripheral surface of at least one side plate is curved in a convex shape along the height direction of the side plate of the battery outer case.

第１発明にあっては、電池外装ケースの側板に設けられた嵌合部により、前記電池外装ケースと基板ケースとを嵌合する。前記側板に囲まれて収納された電池の上面及び下面は露出し、該電池を収納した電池外装ケース及び基板ケースにラベルを巻回することにより、電池パックの厚みは、電池の厚み及びラベルの厚みになる。   In the first invention, the battery outer case and the substrate case are fitted by the fitting portion provided on the side plate of the battery outer case. The upper and lower surfaces of the battery enclosed and surrounded by the side plate are exposed, and the label is wound around the battery outer case and the substrate case containing the battery, so that the thickness of the battery pack is the same as the thickness of the battery and the label. Become thick.

第２発明にあっては、側板に設けられた突起部を、基板ケースに設けられた貫通孔に挿通すると、前記貫通孔の内周の凸部に、前記突起部の切り欠き部が勘合する。これにより、電池外装ケースと基板ケースとは嵌合する。   In the second invention, when the protruding portion provided on the side plate is inserted into the through hole provided in the substrate case, the notched portion of the protruding portion is fitted into the convex portion on the inner periphery of the through hole. . Thereby, the battery outer case and the substrate case are fitted.

第３発明にあっては、ラベルを電池外装ケース及び基板ケースに巻回する場合に、ラベルは前記電池外装ケースの側板の高さ方向に沿って巻回される。前記側板の外周面は、高さ方向に凸状に湾曲しているため、側板と電池の露出した上面及び下面との縁部の存在によりラベルの巻回方向が急激に変わることを防止し、ラベルの巻回方向は徐々に変化し、ラベルは電池外装ケース及び基板ケースの外周に沿って当接し易くなる。   In the third invention, when the label is wound around the battery outer case and the substrate case, the label is wound along the height direction of the side plate of the battery outer case. Since the outer peripheral surface of the side plate is curved in a convex shape in the height direction, the winding direction of the label is prevented from changing suddenly due to the presence of the edge between the side plate and the exposed upper and lower surfaces of the battery, The winding direction of the label gradually changes, and the label easily comes into contact with the outer periphery of the battery outer case and the substrate case.

第１発明にあっては、ケースの肉厚を低減し、電池パックを薄型化することができる。   In the first invention, the thickness of the case can be reduced and the battery pack can be made thinner.

第２発明にあっては、超音波溶着方式における溶着条件の設定が不要となり、溶着時の不良も無くなり、従来に比較して作業性が向上する。   In the second invention, it is not necessary to set the welding conditions in the ultrasonic welding method, and there is no defect at the time of welding, so that workability is improved as compared with the conventional technique.

第３発明にあっては、ラベルを容易に巻回することができ、作業性が向上する。   In the third invention, the label can be easily wound and workability is improved.

以下、本発明をその実施の形態を示す図面に基づいて説明する。
図１は、本発明に係る電池パックの組立前の分解斜視図である。図において、１は電池である。電池１は、板状であって長方形状の平面形状を有し、正極及び負極をセパレータを介して巻回した発電要素をアルミ製の電池ケースに収納した非水電解質二次電池であり、電池１の短辺側の一側面に負極端子１４を有する。負極端子１４からは絶縁テープを挟んでリード板１３が電池ケースの長辺側の側面に沿って配線され、前記一側面に対向する他の側面に沿って配置された長方形状の保護回路基板１２に接続してある。また、電池ケース全体は正極端子になっており、電池ケースに接続されたリード板１３は、同様に保護回路基板１２に接続してある。 Hereinafter, the present invention will be described with reference to the drawings illustrating embodiments thereof.
FIG. 1 is an exploded perspective view of a battery pack according to the present invention before assembly. In the figure, 1 is a battery. The battery 1 is a non-aqueous electrolyte secondary battery in which a power generation element having a plate shape and a rectangular planar shape, in which a positive electrode and a negative electrode are wound through a separator, is housed in an aluminum battery case. 1 has a negative electrode terminal 14 on one side surface of the short side. A lead plate 13 is wired from the negative electrode terminal 14 along the long side surface of the battery case with an insulating tape in between, and is disposed along the other side surface opposite to the one side surface. Is connected to. The battery case as a whole is a positive terminal, and the lead plate 13 connected to the battery case is similarly connected to the protection circuit board 12.

保護回路基板１２は、電池１の過充電又は過放電を防止するための保護回路が設けられた回路基板である。電池１の正極端子及び負極端子夫々から接続されたリード板１３、１３は、保護回路基板１２の外側面に設けられた正負極の出力端子１２ａ、１２ａに接続されている。   The protection circuit board 12 is a circuit board provided with a protection circuit for preventing the battery 1 from being overcharged or overdischarged. The lead plates 13 and 13 connected from the positive electrode terminal and the negative electrode terminal of the battery 1 are connected to positive and negative output terminals 12 a and 12 a provided on the outer surface of the protection circuit board 12.

電池外装ケース２は、合成樹脂（例えば、ポリカーボネート）製であり、電池１の平面形状と略同寸法の長方形状の底板２１と、底板２１の各辺に電池１の肉厚と略同寸法の高さの側板２２、２２、２３、２４とを有し、側板２２、２２、２３、２４の上面外周は開口部を形成する。底板２１の短辺側に設けられた側板２４は、電池１の短辺側の側面を挿設するための直方体状の凹部が内側に向かって形成してある。また、側板２４の凹部には、電池１の側面を収納する場合に、電池１の側面に設けられた負極端子１４が側板２４の内側に接触しないように仕切り板２４ａが形成してある。   The battery outer case 2 is made of a synthetic resin (for example, polycarbonate), has a rectangular bottom plate 21 having substantially the same dimensions as the planar shape of the battery 1, and has substantially the same dimensions as the thickness of the battery 1 on each side of the bottom plate 21. It has side plates 22, 22, 23, 24 having a height, and the outer periphery of the upper surface of the side plates 22, 22, 23, 24 forms an opening. The side plate 24 provided on the short side of the bottom plate 21 has a rectangular parallelepiped recess for inserting the side surface on the short side of the battery 1 facing inward. A partition plate 24 a is formed in the recess of the side plate 24 so that the negative electrode terminal 14 provided on the side surface of the battery 1 does not contact the inside of the side plate 24 when the side surface of the battery 1 is stored.

側板２３は、側板２４に対向して底板２１の短辺側に設けられている。側板２３の上面には、両側にリード板１３、１３を嵌通するための長方形状の切り欠き部２６、２６を設けてある。側板２３の両端部外周には、側板２３の高さ方向に沿って長方形状の嵌合板２５、２５が設けられている。また、側板２３の外周には、嵌合板２５、２５の間に、側板２３の長手方向に沿って適長の間隔を隔てて、嵌合板２５と略同寸法の複数の支持板２７、２７、…が設けられている。嵌合板２５及び支持板２７の一辺には、保護回路基板１２の幅と略同寸法の長さを有するコの字状の切り欠き部が形成され、保護回路基板１２は、側板２３に平行して支持されている。   The side plate 23 is provided on the short side of the bottom plate 21 so as to face the side plate 24. On the upper surface of the side plate 23, rectangular cutout portions 26 and 26 for fitting the lead plates 13 and 13 are provided on both sides. On the outer periphery of both end portions of the side plate 23, rectangular fitting plates 25, 25 are provided along the height direction of the side plate 23. Further, on the outer periphery of the side plate 23, a plurality of support plates 27, 27 having substantially the same dimensions as the fitting plate 25 are provided between the fitting plates 25, 25 at an appropriate length along the longitudinal direction of the side plate 23. ... is provided. On one side of the fitting plate 25 and the support plate 27, a U-shaped notch having a length substantially the same as the width of the protection circuit board 12 is formed, and the protection circuit board 12 is parallel to the side plate 23. It is supported.

側板２２、２２夫々は、底板２１の長辺側に対向して設けられている。側板２２、２２の外周面は、高さ方向に沿って凸状に湾曲するように形成してある。すなわち、側板２２、２２の底板側及び上面側の肉厚が最も薄く、側板２２、２２の高さ方向の中央部の肉厚が最も厚い。   Each of the side plates 22 and 22 is provided to face the long side of the bottom plate 21. The outer peripheral surfaces of the side plates 22 and 22 are formed so as to be curved in a convex shape along the height direction. That is, the thickness of the side plates 22 and 22 on the bottom plate side and the top surface side is the thinnest, and the thickness of the central portion in the height direction of the side plates 22 and 22 is the thickest.

図２は嵌合板２５の拡大斜視図である。嵌合板２５は、長方形状であり、一方の長辺は側板２３の高さ方向に沿って側板２３に当接され、他方の長辺には、コの字状の切り欠き部２５ａが形成されている。嵌合板２５の外側の一面には、長手方向に複数の突起部２５ｂ、２５ｂが設けてある。   FIG. 2 is an enlarged perspective view of the fitting plate 25. The fitting plate 25 has a rectangular shape, one long side is in contact with the side plate 23 along the height direction of the side plate 23, and a U-shaped cutout portion 25 a is formed on the other long side. ing. A plurality of protrusions 25b and 25b are provided on the outer surface of the fitting plate 25 in the longitudinal direction.

基板ケース３は、合成樹脂（例えば、ポリカーボネート）製であり、側板２３と略同寸法の長方形状の蓋板３２と、蓋板３２に周設され、夫々対向する長辺側の側板３３、３３及び短辺側の側板３４、３４を有する。保護回路基板１２は、蓋板３２、側板３３、３３、３４、３４で囲まれた直方体状の空間に収納される。側板３４には、電池外装ケース２の嵌合板２５に設けられた突起部２５ｂ、２５ｂが嵌合する貫通孔３１、３１が設けてある。蓋板３２には、保護回路基板１２に設けられた出力端子１２ａ、１２ａに対向して貫通孔３１ａ、３１ａが形成してある。   The substrate case 3 is made of synthetic resin (for example, polycarbonate), has a rectangular lid plate 32 having substantially the same dimensions as the side plate 23, and is provided around the lid plate 32, and the side plates 33, 33 on the long sides facing each other. And side plates 34, 34 on the short side. The protection circuit board 12 is accommodated in a rectangular parallelepiped space surrounded by the cover plate 32 and the side plates 33, 33, 34, and 34. The side plate 34 is provided with through holes 31 and 31 into which the protrusions 25b and 25b provided on the fitting plate 25 of the battery outer case 2 are fitted. Through holes 31 a and 31 a are formed in the cover plate 32 so as to face the output terminals 12 a and 12 a provided on the protection circuit board 12.

基板ケース３の側板３４、３４の外周面は、側板２２、２２の外周面と同様に凸状に湾曲して形成してある。   The outer peripheral surfaces of the side plates 34, 34 of the substrate case 3 are formed in a convex curve like the outer peripheral surfaces of the side plates 22, 22.

電池１の短辺側の側面を側板２４の凹部に挿入し、電池１を電池外装ケース２に収納する。電池１に接続されたリード板１３、１３を側板２３の切り欠き部２６、２６に挿通し、リード板１３、１３に接続された保護回路基板１２を、側板２３を挟んで電池１と対向する位置に配置し、嵌合板２５、２５、支持板２７、２７、…の切り欠き部に嵌合して固定する。基板ケース３の貫通孔３１、３１に電池外装ケース２の突起部２５ｂ、２５ｂを嵌合して、保護回路基板１２を側板２３と基板ケース３との間に収納する。   The side surface on the short side of the battery 1 is inserted into the recess of the side plate 24, and the battery 1 is stored in the battery outer case 2. The lead plates 13 and 13 connected to the battery 1 are inserted into the notches 26 and 26 of the side plate 23, and the protection circuit board 12 connected to the lead plates 13 and 13 is opposed to the battery 1 with the side plate 23 interposed therebetween. It arrange | positions in a position and it fits and fixes to the notch part of the fitting plates 25 and 25 and the support plates 27, 27, .... The protrusions 25 b and 25 b of the battery outer case 2 are fitted into the through holes 31 and 31 of the substrate case 3, and the protection circuit board 12 is accommodated between the side plate 23 and the substrate case 3.

図３は電池外装ケース２及び基板ケース３の嵌合前後の状態を示す説明図である。電池外装ケース２の側板２３に設けられた切り欠き部２６にリード板１３を挿通し、側板２３を挟んで電池１と保護回路基板１２とが対向して配置してある。保護回路基板１２は、側板２３に設けられた嵌合板２５の切り欠き部２５ａに勘合して嵌合板２５に支持されている。   FIG. 3 is an explanatory view showing a state before and after fitting of the battery outer case 2 and the substrate case 3. The lead plate 13 is inserted into a notch portion 26 provided in the side plate 23 of the battery outer case 2, and the battery 1 and the protection circuit board 12 are arranged to face each other with the side plate 23 interposed therebetween. The protection circuit board 12 is supported by the fitting plate 25 by fitting into a notch 25 a of the fitting plate 25 provided on the side plate 23.

基板ケース３を電池外装ケース２に嵌合する際に、側板３４の先端部が当接する突起部２５ｂの当接面は、テーパ状に形成してあり、突起部２５ｂの前記当接面の反対側の面には、基板ケース３をロックして固定するための切り欠き部２５ｃを設けている。   When the board case 3 is fitted to the battery outer case 2, the contact surface of the projection 25b with which the tip of the side plate 34 contacts is formed in a tapered shape, and is opposite to the contact surface of the projection 25b. On the side surface, a notch 25c for locking and fixing the substrate case 3 is provided.

電池外装ケース２の突起部２５ｂに当接する側板３４の先端部は、突起部２５ｂのテーパ状の面に沿ってテーパ状に形成してある。貫通孔３１の内周面には、突起部２５ｂに設けられた切り欠き部２５ｃに嵌合する径方向にテーパ状の凸部３１ｂを設けている。   The front end portion of the side plate 34 that comes into contact with the protruding portion 25b of the battery outer case 2 is formed in a tapered shape along the tapered surface of the protruding portion 25b. On the inner peripheral surface of the through hole 31, a convex portion 31b having a taper shape in the radial direction that fits into the notch portion 25c provided in the projection portion 25b is provided.

電池外装ケース２に基板ケース３を当接すると、基板ケース３の側板３４の先端部が電池外装ケース２の突起部２５ｂに当接して、外側に広がる。さらに、基板ケース３を電池外装ケース２の方向へ押圧すると、突起部２５ｂが貫通孔３１に挿入され、側板３４の先端部は元の形状に戻る。この際に突起部２５ｂの切り欠き部２５ｃが貫通孔３１の凸部３１ｂでロックされ、電池外装ケース２と基板ケース３とは嵌合して一体化する。   When the substrate case 3 is brought into contact with the battery outer case 2, the front end portion of the side plate 34 of the substrate case 3 comes into contact with the protrusion 25 b of the battery outer case 2 and spreads outward. Further, when the substrate case 3 is pressed in the direction of the battery outer case 2, the protruding portion 25 b is inserted into the through hole 31, and the distal end portion of the side plate 34 returns to its original shape. At this time, the notch 25c of the protrusion 25b is locked by the convex portion 31b of the through hole 31, and the battery outer case 2 and the substrate case 3 are fitted and integrated.

図４はラベル４を巻回した電池パックの斜視図である。図において、４はポリエチレンテレフタレート、ポリプロピレンなどの合成樹脂製のラベルである。ラベル４の幅方向の寸法は、嵌合した電池外装ケース２及び基板ケース３の長手方向の寸法よりやや短い寸法を有する。電池１及び保護回路基板１２を電池外装ケース２及び基板ケース３に収納したラベル４を巻回前の電池パックに対して、ラベル４を、側板２２、底板２１、側板２２、露出した電池１の上面に沿って巻回する。   FIG. 4 is a perspective view of the battery pack around which the label 4 is wound. In the figure, 4 is a label made of synthetic resin such as polyethylene terephthalate and polypropylene. The dimension in the width direction of the label 4 is slightly shorter than the dimension in the longitudinal direction of the battery outer case 2 and the substrate case 3 that are fitted. The label 4 is placed on the side plate 22, the bottom plate 21, the side plate 22, and the exposed battery 1 with respect to the battery pack before winding the label 4 in which the battery 1 and the protection circuit board 12 are accommodated in the battery outer case 2 and the board case 3. Wind along the top surface.

図５は図４のＡ―Ａ線切断断面図である。電池１は、電池外装ケース２の底板２１、側板２３、２４、及び図に示されていない側板２２、２２の間に収納されている。電池１に接続されたリード板１３、１３は、側板２３を挿通し、リード板１３、１３に接続された保護回路基板１２は、側板２３を挟んで電池１と対向する位置に配置してある。基板ケース３は、保護回路基板１２を囲むように電池外装ケース２に嵌合してある。電池パックの長手方向の寸法より若干短い寸法の幅を有するラベル４は、電池外装ケース２及び基板ケース３を覆って巻回してある。   5 is a cross-sectional view taken along line AA of FIG. The battery 1 is accommodated between the bottom plate 21 and side plates 23 and 24 of the battery outer case 2 and the side plates 22 and 22 not shown in the drawing. The lead plates 13 and 13 connected to the battery 1 are inserted through the side plate 23, and the protection circuit board 12 connected to the lead plates 13 and 13 is disposed at a position facing the battery 1 with the side plate 23 interposed therebetween. . The board case 3 is fitted to the battery outer case 2 so as to surround the protection circuit board 12. A label 4 having a width slightly shorter than the length in the longitudinal direction of the battery pack is wound around the battery outer case 2 and the substrate case 3.

側板２３、２４の高さ方向の寸法は、電池１の厚さ寸法と略同寸法であり、電池１を電池外装ケース２に収納した場合に、電池１の上面と電池外装ケース２及び基板ケース３の上面は同一面となる。これにより、電池パックの厚さ方向の寸法は、底板２１の肉厚、電池１の厚さ、ラベル４の厚さのみとなり、従来の例のように、上下２つに分割されたケース半体を一体化した電池パックに比較して、電池パックの薄型化を実現できる。   The dimension in the height direction of the side plates 23 and 24 is substantially the same as the thickness dimension of the battery 1, and when the battery 1 is stored in the battery outer case 2, the upper surface of the battery 1, the battery outer case 2, and the substrate case. The upper surface of 3 is the same surface. As a result, the dimensions of the battery pack in the thickness direction are only the thickness of the bottom plate 21, the thickness of the battery 1, and the thickness of the label 4. As in the conventional example, the half case is divided into upper and lower parts. The battery pack can be made thinner than a battery pack in which is integrated.

図６は図４のＢ―Ｂ線切断断面図である。側板２２及び側板３４は、高さ方向に対して中央部の厚み寸法が最も大きく、端部側に沿って厚み寸法を小さく形成している。側板２２の高さ方向の寸法ｔは、電池１の厚さＴと略同寸法である。   6 is a cross-sectional view taken along line BB in FIG. The side plate 22 and the side plate 34 have the largest thickness in the center with respect to the height direction, and the thickness is reduced along the end side. The dimension t in the height direction of the side plate 22 is substantially the same as the thickness T of the battery 1.

ラベル４を、底板２１、側板２２、２２、電池１の上面に沿って巻回する場合に、側板２２及び側板３４の形状が図に示すように外側に湾曲して形成してあることにより、ラベル４を側板２２及び側板３４と電池１の上面とにより形成される縁部、又は側板２２及び側板３４と底板２１とにより形成される縁部において、ラベル４の巻回方向を徐々に変化させることができ、ラベル４が略９０度折り曲げて巻回される際に生じるラベル４の浮き又はよじれなどを防止することができる。   When the label 4 is wound along the bottom plate 21, the side plates 22, 22 and the upper surface of the battery 1, the shape of the side plate 22 and the side plate 34 is curved outward as shown in the figure. The winding direction of the label 4 is gradually changed at the edge formed by the side plate 22 and the side plate 34 and the upper surface of the battery 1 or the edge formed by the side plate 22 and the side plate 34 and the bottom plate 21. It is possible to prevent the label 4 from being lifted or twisted when the label 4 is bent and wound approximately 90 degrees.

上述の通り、開口部を設けた電池外装ケース２に電池１を収容し、電池１に取り付けられた保護回路基板１２を保護する基板ケース３を電池外装ケース２に嵌合して一体化し、ラベル４を巻回することにより、電池パックの厚み方向の寸法を小さくして電池パックの薄型化を行なうことができる。また、ケースと基板ケースとを嵌合して一体化することにより、超音波溶着により外装ケースを溶着する場合と比較して、溶着条件の設定が不要になり、また、溶着における不具合を無くすことができる。   As described above, the battery 1 is housed in the battery outer case 2 provided with the opening, and the board case 3 that protects the protection circuit board 12 attached to the battery 1 is fitted and integrated with the battery outer case 2, and the label By winding 4, the thickness of the battery pack can be reduced and the battery pack can be made thinner. In addition, by fitting and integrating the case and the substrate case, it is not necessary to set welding conditions compared to the case where the outer case is welded by ultrasonic welding, and defects in welding are eliminated. Can do.

また、ラベル４を巻回する電池外装ケース２の側板２２及び基板ケース３の側板３４の外周面の形状を高さ方向に凸状に湾曲させることにより、ラベル４を巻回する際に、巻回方向を徐々に変化させることができ、ラベル４の浮き又はよじれを防止して、ラベル巻きの作業性が向上する。   When the label 4 is wound, the shape of the outer peripheral surfaces of the side plate 22 of the battery outer case 2 and the side plate 34 of the substrate case 3 around which the label 4 is wound is curved in a convex shape in the height direction. The turning direction can be gradually changed, and the label 4 can be prevented from floating or twisting, thereby improving the workability of label winding.

上述した実施の形態においては、電池外装ケース２は、底板２１と、底板２１の各辺に電池１の肉厚と略同寸法の高さの側板２２、２２、２３、２４とを有する構成であったが、これに限らず、側板２２、２２、２３、２４を枠体状に周設する構成でもよい。これにより、底板２１が不要になり、電池パックの厚みは、上述の実施の形態に比較して、底板２１の厚みの寸法だけ薄くすることができる。   In the embodiment described above, the battery outer case 2 includes the bottom plate 21 and the side plates 22, 22, 23, and 24 having the same height as the thickness of the battery 1 on each side of the bottom plate 21. However, the present invention is not limited to this, and the side plates 22, 22, 23, and 24 may be arranged in a frame shape. Thereby, the bottom plate 21 becomes unnecessary, and the thickness of the battery pack can be reduced by the thickness dimension of the bottom plate 21 as compared with the above-described embodiment.

上述した実施の形態においては、側板２２の高さ方向の寸法は電池１の厚みと略同寸法であったが、これに限らず、側板２２の高さ方向の寸法を電池１の厚みより若干小さくすることも可能である。これにより、ラベル４の巻回作業は、より容易になる。   In the embodiment described above, the dimension in the height direction of the side plate 22 is substantially the same as the thickness of the battery 1, but this is not limiting, and the dimension in the height direction of the side plate 22 is slightly larger than the thickness of the battery 1. It is also possible to make it smaller. Thereby, the winding operation of the label 4 becomes easier.

上述した実施の形態においては、電池外装ケース２の側板２２及び基板ケース３の側板３４の外周面の形状を高さ方向に凸状に湾曲させたものであったが、これに限らず、台形状に形成してもよい。   In the above-described embodiment, the shape of the outer peripheral surface of the side plate 22 of the battery outer case 2 and the side plate 34 of the substrate case 3 is curved in a convex shape in the height direction. You may form in a shape.

上述した実施の形態においては、嵌合板２５に突起部２５ｂを設け、基板ケース３に突起部２５ｂに嵌合する貫通孔３１を設ける構成であったが、これに限らず、嵌合板２５に貫通孔を設け、基板ケースに突起部を設ける構成でもよい。また、貫通孔３１に代えて、凹部を設ける構成でもよい。   In the above-described embodiment, the protrusion 25b is provided on the fitting plate 25, and the through hole 31 that fits the protrusion 25b is provided on the board case 3. However, the present invention is not limited thereto, and the fitting plate 25 penetrates the fitting plate 25. A configuration may be employed in which holes are provided and protrusions are provided on the substrate case. Moreover, it may replace with the through-hole 31 and the structure which provides a recessed part may be sufficient.

上述した実施の形態においては、嵌合板２５に２つの突起部２５ｂ、２５ｂを設ける構成であったが、突起部の数はこれに限らず、１つ、又は３つなどであってもよい。また、嵌合板２５における突起部２５ｂ、２５ｂの位置は、嵌合板２５の対角線上に設けてもよい。   In the above-described embodiment, the two projections 25b and 25b are provided on the fitting plate 25. However, the number of projections is not limited to this, and may be one or three. Further, the positions of the protrusions 25 b and 25 b on the fitting plate 25 may be provided on the diagonal line of the fitting plate 25.

本発明に係る電池パックの組立前の分解斜視図である。It is a disassembled perspective view before the assembly of the battery pack which concerns on this invention. 嵌合板の拡大斜視図である。It is an expansion perspective view of a fitting board. 電池外装ケース及び基板ケースの嵌合前後の状態を示す説明図である。It is explanatory drawing which shows the state before and behind fitting of a battery exterior case and a board | substrate case. ラベルを巻回した電池パックの斜視図である。It is a perspective view of the battery pack which wound the label. 図４のＡ―Ａ線切断断面図である。FIG. 5 is a cross-sectional view taken along line AA in FIG. 4. 図４のＢ―Ｂ線切断断面図である。FIG. 5 is a sectional view taken along line BB in FIG. 4. 従来の板状の電池パックの電池の肉厚方向の断面図である。It is sectional drawing of the thickness direction of the battery of the conventional plate-shaped battery pack.

符号の説明Explanation of symbols

１ 電池
２ 電池外装ケース
３ 基板ケース
４ ラベル
１２ 保護回路基板
１３ リード板
２１ 底板
２２、２３、２４、３３、３４ 側板
２５ 嵌合板
２５ａ 切り欠き部
２５ｂ 突起部
２５ｃ 切り欠き部
３１ 貫通孔
３１ｂ 凸部
DESCRIPTION OF SYMBOLS 1 Battery 2 Battery outer case 3 Board case 4 Label 12 Protection circuit board 13 Lead plate 21 Bottom plate 22, 23, 24, 33, 34 Side plate 25 Fitting plate 25a Notch 25b Protrusion 25c Notch 31 Through-hole 31b Protrusion

Claims (3)

保護素子を実装した回路基板を接続した電池と、側板を周設した枠体を有し、前記電池を収納する電池外装ケースと、前記側板を挟んで前記電池と対向して配置された前記回路基板を収納する基板ケースとを備える電池パックであって、
前記側板には、前記回路基板側に前記基板ケースと嵌合する嵌合部を設け、
前記電池外装ケース及び基板ケースに巻回したラベルを備えることを特徴とする電池パック。 A battery having a circuit board on which a protection element is mounted; a frame having a side plate provided around the battery; a battery outer case for housing the battery; and the circuit disposed to face the battery across the side plate. A battery pack comprising a substrate case for storing a substrate,
The side plate is provided with a fitting portion to be fitted to the board case on the circuit board side,
A battery pack comprising a label wound around the battery outer case and the substrate case. 前記基板ケースは、前記側板と嵌合し内周に凸部を設けた貫通孔を有し、
前記嵌合部は、前記貫通孔に挿通され、前記凸部に嵌合する切り欠き部を設けた突起部を有することを特徴とする請求項１に記載された電池パック。 The substrate case has a through hole that fits with the side plate and has a convex portion on the inner periphery,
2. The battery pack according to claim 1, wherein the fitting portion includes a protrusion portion that is inserted into the through hole and has a notch portion that fits into the convex portion. 前記基板ケースは、前記電池外装ケースの側板に連なる側板を有し、
前記ラベルが当接した前記電池外装ケース及び基板ケースの少なくとも一方の側板の外周面は、前記電池外装ケースの側板の高さ方向に沿って凸状に湾曲していることを特徴とする請求項１又は請求項２に記載された電池パック。

The substrate case has a side plate connected to a side plate of the battery outer case,
The outer peripheral surface of at least one side plate of the battery outer case and the substrate case with which the label is in contact is curved in a convex shape along the height direction of the side plate of the battery outer case. The battery pack according to claim 1 or 2.

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Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4989920B2 (en) * 2006-05-31 2012-08-01 三洋電機株式会社 Battery pack
KR100821857B1 (en) * 2006-10-23 2008-04-15 주식회사 엘지화학 Secondary battery pack
KR100889624B1 (en) 2007-05-25 2009-03-20 삼성에스디아이 주식회사 Battery pack
KR100973316B1 (en) 2008-05-09 2010-07-30 삼성에스디아이 주식회사 Battery pack
US8691429B2 (en) * 2008-10-14 2014-04-08 Samsung Sdi Co., Ltd. Polymer battery pack and method for manufacturing the same
KR101030856B1 (en) * 2008-12-16 2011-04-22 삼성에스디아이 주식회사 Battery pack
JP5329252B2 (en) * 2009-02-09 2013-10-30 三洋電機株式会社 Pack battery
JP5405149B2 (en) * 2009-02-23 2014-02-05 三洋電機株式会社 Battery pack
US8673482B2 (en) * 2009-06-18 2014-03-18 Samsung Sdi Co., Ltd. Secondary battery including an extension wall

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2000048786A (en) * 1998-07-30 2000-02-18 Denso Corp Battery case
JP2001325927A (en) * 2000-05-17 2001-11-22 Gs-Melcotec Co Ltd Battery pack
JP2003017012A (en) * 2001-07-04 2003-01-17 Kyocera Corp Battery
JP2003282040A (en) * 2002-03-26 2003-10-03 Nec Tokin Tochigi Ltd Battery pack
JP2003323876A (en) * 2002-04-30 2003-11-14 Sanyo Electric Co Ltd Battery pack
JP2005158452A (en) * 2003-11-25 2005-06-16 Sony Corp Battery pack, manufacturing method of battery pack, and battery packaging body

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2000048786A (en) * 1998-07-30 2000-02-18 Denso Corp Battery case
JP2001325927A (en) * 2000-05-17 2001-11-22 Gs-Melcotec Co Ltd Battery pack
JP2003017012A (en) * 2001-07-04 2003-01-17 Kyocera Corp Battery
JP2003282040A (en) * 2002-03-26 2003-10-03 Nec Tokin Tochigi Ltd Battery pack
JP2003323876A (en) * 2002-04-30 2003-11-14 Sanyo Electric Co Ltd Battery pack
JP2005158452A (en) * 2003-11-25 2005-06-16 Sony Corp Battery pack, manufacturing method of battery pack, and battery packaging body

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