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JP4794908B2 - Battery pack - Google Patents

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Publication number
JP4794908B2
JP4794908B2 JP2005153134A JP2005153134A JP4794908B2 JP 4794908 B2 JP4794908 B2 JP 4794908B2 JP 2005153134 A JP2005153134 A JP 2005153134A JP 2005153134 A JP2005153134 A JP 2005153134A JP 4794908 B2 JP4794908 B2 JP 4794908B2
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Prior art keywords
upper cover
unit cell
battery pack
resin mold
circuit board
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JP2005153134A
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JP2006331820A (en
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宏 山本
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Maxell Ltd
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Hitachi Maxell Energy Ltd
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Priority to JP2005153134A priority Critical patent/JP4794908B2/en
Priority to US11/884,355 priority patent/US20100143793A1/en
Priority to KR1020077027276A priority patent/KR101233261B1/en
Priority to CN2006800140091A priority patent/CN101167198B/en
Priority to PCT/JP2006/309154 priority patent/WO2006126379A1/en
Publication of JP2006331820A publication Critical patent/JP2006331820A/en
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Publication of JP4794908B2 publication Critical patent/JP4794908B2/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

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Description

本発明は、上側カバーを素電池の上側に配して樹脂モールドで素電池の上面に一体化する電池パックに関する。   The present invention relates to a battery pack in which an upper cover is disposed on an upper side of a unit cell and integrated with a top surface of the unit cell by a resin mold.

特許文献１・２には、上側カバーや回路基板などを素電池の上側に配した電池パックが開示されている。さらに特許文献１では、回路基板を覆う上側カバーを素電池の上面に固定した状態で、上側カバーを樹脂モールドで素電池の上面に一体化している。   Patent Documents 1 and 2 disclose a battery pack in which an upper cover, a circuit board, and the like are arranged on the upper side of a unit cell. Furthermore, in Patent Document 1, the upper cover is integrated with the upper surface of the unit cell by a resin mold in a state where the upper cover that covers the circuit board is fixed to the upper surface of the unit cell.

特開２００３−３０８８８１号公報（図１）Japanese Patent Laying-Open No. 2003-308881 (FIG. 1) 特開２００４−３３５３８７号公報（図１−３）JP-A-2004-335387 (FIGS. 1-3)

特許文献１では、上側カバーをリベット状に変形させることによって素電池の上面に固定したのちに、樹脂モールドを成形してある。したがって、上側カバーの固定作業の分だけ電池パックの製造に手間が掛かることになる。   In Patent Document 1, a resin mold is formed after fixing the upper cover to the upper surface of the unit cell by deforming it into a rivet shape. Therefore, it takes time to manufacture the battery pack by the amount of the work for fixing the upper cover.

そこで本発明の目的は、効率よく上側カバーと素電池の上面とを適正な間隔に設定した状態で、上側カバーを樹脂モールドによって素電池の上面に一体化できる電池パックを提供することにある。   Accordingly, an object of the present invention is to provide a battery pack in which the upper cover can be integrated with the upper surface of the unit cell by a resin mold while the upper cover and the upper surface of the unit cell are efficiently set at an appropriate interval.

本発明が対象とする電池パック１は、図２および図３に示すごとく、素電池２の上側に配される上側カバー３と、上側カバー３と素電池２の上面との間に成形されて上側カバー３を素電池２の上面に一体化する樹脂モールド５とを含んでいる。上側カバー３と素電池２の上面との間に樹脂モールド成形用の溶融樹脂を注入する隙間を確保するために、図１に示すごとく、上側カバー３の下面に位置決め突起３３を下方に向けて突設してある。樹脂モールド５に対する上側カバー３の抜け止めを図るために、アンカー手段を上側カバー３に設けてある。位置決め突起３３は、上側カバー３の下面に少なくとも１個設けられる。 As shown in FIGS. 2 and 3, the battery pack 1 targeted by the present invention is molded between an upper cover 3 disposed on the upper side of the unit cell 2, and the upper cover 3 and the upper surface of the unit cell 2. And a resin mold 5 for integrating the upper cover 3 with the upper surface of the unit cell 2. In order to ensure a gap for injecting molten resin for resin molding between the upper cover 3 and the upper surface of the unit cell 2, as shown in FIG. 1, the positioning projection 33 is directed downward on the lower surface of the upper cover 3. Projected. In order to prevent the upper cover 3 from coming off from the resin mold 5, anchor means are provided on the upper cover 3. At least one positioning protrusion 33 is provided on the lower surface of the upper cover 3.

詳しくは、図３に示すごとく、素電池２の上側に電装品が配されるとともに、その電装品の上側に上側カバー３が配されており、樹脂モールド５が、素電池１の上面に電装品と上側カバー３とを一体化している。電装品は、ＰＴＣ１１や回路基板１２やリード線１３・１５などが該当する。   Specifically, as shown in FIG. 3, an electrical component is disposed on the upper side of the unit cell 2, and an upper cover 3 is disposed on the upper side of the electrical component, and the resin mold 5 is disposed on the upper surface of the unit cell 1. The product and the upper cover 3 are integrated. The electrical component corresponds to the PTC 11, the circuit board 12, the lead wires 13 and 15, and the like.

上記のアンカー手段として、図１に示すごとく位置決め突起３３に凹み状に形成した凹部３５を設ける。あるいは、上記のアンカー手段として、図７に示すごとく上側カバー３の下面から下方に向けて突設するとともに、その側面に貫通口５０を設けたアンカー部４９を設ける。貫通口５０は、アンカー部４９に対して貫通状に設ける場合と、凹み状に設ける場合とが該当する。 As the anchor means, a concave portion 35 formed in a concave shape is provided in the positioning projection 33 as shown in FIG . Alternatively, as the anchor means, as shown in FIG. 7, an anchor portion 49 that protrudes downward from the lower surface of the upper cover 3 and has a through hole 50 on the side surface thereof is provided . The through-hole 50 corresponds to a case where it is provided in a penetrating manner with respect to the anchor portion 49 and a case where it is provided in a concave shape.

樹脂モールド５の成形のために電池パック１の中間組立品を金型内に装着した際に、例えば金型の内面で上側カバー３が押されることで、位置決め突起３３の下端が素電池２の上面に当接し、上側カバー３と素電池２の上面とが所定間隔に規制される。したがって、上側カバー３と素電池２の上面との間に溶融樹脂を注入するための隙間が確実に確保されるとともに、上側カバー３と素電池２の上面との間に配されるリード線やＰＴＣ１１や回路基板１２などの電装品が、互いに接近し過ぎて接触することを防止できる。   When the intermediate assembly of the battery pack 1 is mounted in the mold for forming the resin mold 5, for example, the upper cover 3 is pushed on the inner surface of the mold, so that the lower end of the positioning protrusion 33 is the lower end of the unit cell 2. Abutting on the upper surface, the upper cover 3 and the upper surface of the unit cell 2 are regulated at a predetermined interval. Therefore, a gap for injecting molten resin between the upper cover 3 and the upper surface of the unit cell 2 is ensured, and a lead wire disposed between the upper cover 3 and the upper surface of the unit cell 2 It is possible to prevent electrical components such as the PTC 11 and the circuit board 12 from coming into close contact with each other.

上側カバー３と素電池２の上面との間隔は、位置決め突起３３によって規定されて、電池パック１毎にばらつくことが低減される。したがって、樹脂モールド５の成形後の電池パック１の上下寸法の精度を高く維持できて、電池パック１の製造に対する信頼性を高くできる。かかる上側カバー３と素電池２の上面との間隔の規制のために、上側カバー３を素電池２の上面にリベットなどで固定しなくても済み、その分だけ電池パック１の製造に要する手間を軽減できる。   The distance between the upper cover 3 and the upper surface of the unit cell 2 is defined by the positioning protrusion 33, and variations in each battery pack 1 are reduced. Therefore, the accuracy of the vertical dimension of the battery pack 1 after the molding of the resin mold 5 can be maintained high, and the reliability for manufacturing the battery pack 1 can be increased. In order to regulate the distance between the upper cover 3 and the upper surface of the unit cell 2, it is not necessary to fix the upper cover 3 to the upper surface of the unit cell 2 with a rivet or the like. Can be reduced.

上側カバー３にアンカー手段を設けると、樹脂モールド５の成形後に上側カバー３が樹脂モールド５から外れたり、素電池２の上側にずれ動いたりすることがない。この点でも電池パック１の上下寸法の精度を高く維持できて、電池パック１の製造に対する信頼性を高くできる。   When the anchor means is provided on the upper cover 3, the upper cover 3 is not detached from the resin mold 5 after the resin mold 5 is formed, and is not shifted to the upper side of the unit cell 2. Also in this respect, the accuracy of the vertical dimension of the battery pack 1 can be maintained high, and the reliability for manufacturing the battery pack 1 can be increased.

（実施例１） 図１ないし図６は、本発明が対象とする電池パックの実施例１を示しており、図２および図３に示すごとく、電池パック１は、扁平角箱状の素電池２と、素電池２の上側に配される電装品と、電装品の上側に配されるプラスチック製の上側カバー３と、素電池２の上面に電装品と上側カバー３とを一体化する樹脂モールド５と、素電池２の下面に固定されるプラスチック製の下側カバー６とを含む。素電池２の左右幅寸法は３3.８mm、上下高さ寸法は４６mm、前後厚み寸法は4.５mmとした。 Example 1 FIGS. 1 to 6 show Example 1 of a battery pack targeted by the present invention. As shown in FIGS. 2 and 3, the battery pack 1 is a flat rectangular box-shaped unit cell. 2, an electrical component disposed on the upper side of the unit cell 2, a plastic upper cover 3 disposed on the upper side of the electrical unit, and a resin that integrates the electrical unit and the upper cover 3 on the upper surface of the unit cell 2. A mold 5 and a plastic lower cover 6 fixed to the lower surface of the unit cell 2 are included. The left-right width dimension of the unit cell 2 was 33.8 mm, the vertical height dimension was 46 mm, and the front-rear thickness dimension was 4.5 mm.

樹脂モールド５は、ポリアミド系樹脂またはポリエステル系樹脂で成形しており、電装品を外部から絶縁するとともに保護する。素電池２は、図２に示すごとく、上下高さ寸法および左右幅寸法に比べて前後厚み寸法が小さくなっている。素電池２は、外装缶７の内部に電極体と電解液とを封入してあり、充放電が可能な二次電池、具体的にはリチウムイオン電池からなる。素電池２は、外装缶７の上面を塞ぐ封口板９の中央に負極端子１０を有している。   The resin mold 5 is formed of a polyamide-based resin or a polyester-based resin, and insulates and protects electrical components from the outside. As shown in FIG. 2, the unit cell 2 has a smaller front-rear thickness dimension than a vertical height dimension and a left-right width dimension. The unit cell 2 includes a secondary battery, specifically a lithium ion battery, in which an electrode body and an electrolytic solution are enclosed in an outer can 7 and can be charged and discharged. The unit cell 2 has a negative electrode terminal 10 in the center of a sealing plate 9 that closes the upper surface of the outer can 7.

外装缶７は、アルミニウムまたはその合金からなる板材を深絞り加工して形成される。封口板９は、アルミニウム合金などの板材をプレス加工して形成される。電極体は、ＬｉＣｏＯ2 を正極活物質とする正極シートと、黒鉛を負極活物質とする負極シートとを樹脂製のセパレータを挟んで渦巻状に巻回してなり、全体が扁平状に押し潰し形成されている。 The outer can 7 is formed by deep drawing a plate material made of aluminum or an alloy thereof. The sealing plate 9 is formed by pressing a plate material such as an aluminum alloy. The electrode body is formed by spirally winding a positive electrode sheet using LiCoO 2 as a positive electrode active material and a negative electrode sheet using graphite as a negative electrode active material with a resin separator in between, and crushing the whole into a flat shape Has been.

電装品は、素電池２の上側に配されるＰＴＣ１１と、ＰＴＣ１１の上側に配される左右横長の回路基板１２とを含む。ＰＴＣ１１は、素電池２の充放電電流が設定値を越えたときに、その電流を強制的に減少させる。ＰＴＣ１１は、帯状の端子側リード線１３を介して負極端子１０に接続されるとともに、帯状の基板側リード線１５を介して回路基板１２に接続される。回路基板１２は、Ｌ字状に折り曲げた一対のリード板１６・１７を介して素電池２の封口板９に接続される。基板側リード線１５は、Ｕ字状に湾曲した状態で回路基板１２の左端部に接合される。   The electrical component includes a PTC 11 disposed on the upper side of the unit cell 2 and a horizontally long circuit board 12 disposed on the upper side of the PTC 11. When the charge / discharge current of the unit cell 2 exceeds the set value, the PTC 11 forcibly decreases the current. The PTC 11 is connected to the negative electrode terminal 10 via a strip-shaped terminal-side lead wire 13 and is connected to the circuit board 12 via a strip-shaped substrate-side lead wire 15. The circuit board 12 is connected to the sealing plate 9 of the unit cell 2 through a pair of lead plates 16 and 17 bent in an L shape. The board-side lead wire 15 is bonded to the left end portion of the circuit board 12 in a U-shaped curved state.

回路基板１２は、素電池２の充放電電流を制限する保護回路などを備えており、回路基板１２の上面の右側寄りに外部接続端子１９・２０・２１が左右に並べて配されている。外部接続端子１９・２０・２１は、携帯電話や充電器などの外部機器の接触端子に接触接続して、素電池２への充放電電流の入出力などを行なう。回路基板１２の上面の左側寄りには、電池パック１の性能検査のための一対の検査用端子２２・２３が左右に並べて配されている。   The circuit board 12 includes a protection circuit for limiting the charge / discharge current of the unit cell 2, and external connection terminals 19, 20, and 21 are arranged side by side on the right side of the upper surface of the circuit board 12. The external connection terminals 19, 20, and 21 are connected to contact terminals of an external device such as a mobile phone or a charger to input / output charge / discharge current to / from the unit cell 2. A pair of inspection terminals 22 and 23 for performance inspection of the battery pack 1 are arranged side by side on the left side of the upper surface of the circuit board 12.

リード線１３・１５およびリード板１６・１７は、アルミニウムやニッケルなどの導電性金属の薄シートを切断して形成される。素電池２の上側に前記電装品および上側カバー３を仮組みして、この中間組立品に樹脂モールド５が成形される。   The lead wires 13 and 15 and the lead plates 16 and 17 are formed by cutting a thin sheet of conductive metal such as aluminum or nickel. The electrical component and the upper cover 3 are temporarily assembled on the upper side of the unit cell 2, and the resin mold 5 is formed on the intermediate assembly.

上側カバー３の左右両端には、前記外部機器の位置決め用凸部に係合する切り欠き２５・２５をそれぞれ形成してある。上側カバー３は、外部接続端子１９・２０・２１に対面する３個の窓口２６・２７・２９と、前記検査用端子２２・２３に対面する２個の窓口３０・３１とを貫通状に設けてあり、窓口３０・３１の上面を塞ぐように水没判定シール３２が貼り付けられる。   Notches 25 and 25 are formed on the left and right ends of the upper cover 3 to engage with the positioning convex portions of the external device. The upper cover 3 is provided with three windows 26, 27, 29 facing the external connection terminals 19, 20, 21 and two windows 30, 31 facing the inspection terminals 22, 23 in a penetrating manner. A submergence determination seal 32 is attached so as to close the upper surfaces of the windows 30 and 31.

上側カバー３の左右両端部には、図１および図２に示すごとく所定寸法の位置決め突起３３・３３がそれぞれ下方に向けて突設してあり、図３および図４に示すごとく各位置決め突起３３の下端が素電池２の封口板９の上面にそれぞれ当接することで、上側カバー３と素電池２の上面との間隔が規制される。位置決め突起３３の上下寸法は２mmである。   As shown in FIGS. 1 and 2, positioning projections 33 and 33 having predetermined dimensions project downward from the left and right end portions of the upper cover 3, respectively. As shown in FIGS. Are in contact with the upper surface of the sealing plate 9 of the unit cell 2, so that the distance between the upper cover 3 and the upper surface of the unit cell 2 is regulated. The vertical dimension of the positioning projection 33 is 2 mm.

各位置決め突起３３は、図１に示すごとく前後幅（図１では上下）に比べて左右幅が小さい板状になっており、各位置決め突起３３の上下中間の前後縁には、四角の凹み状に形成した前後一対の凹部（アンカー手段）３５・３５がそれぞれ設けられる。この凹部３５・３５に、図５に示すごとく樹脂モールド５が入り込むことで、樹脂モールド５に対する上側カバー３の抜け止めが図られる。   As shown in FIG. 1, each positioning projection 33 has a plate shape with a smaller left-right width than the front-rear width (upper and lower in FIG. 1). A pair of front and rear recesses (anchor means) 35 and 35 formed in the above are respectively provided. When the resin mold 5 enters the recesses 35 and 35 as shown in FIG. 5, the upper cover 3 is prevented from coming off from the resin mold 5.

上側カバー３の下面には、図３および図４に示すごとく、回路基板１２が嵌め込まれる左右横長の基板嵌合部３６が凹み形成されている。基板嵌合部３６の左右中間には、両面テープ３７が嵌め込まれるテープ嵌合部３９が凹み形成されている。両面テープ３７によって上側カバー３が回路基板１２に貼り付けられる。素電池２の封口板９の上面には、図２および図３に示すごとく、左右中央付近から左端にかけて絶縁シール４０が配されており、この絶縁シール４０によってＰＴＣ１１や端子側リード線１３や基板側リード線１５が素電池２の封口板９に接触することを防いでいる。   As shown in FIGS. 3 and 4, left and right horizontally long board fitting portions 36 into which the circuit board 12 is fitted are formed in the lower surface of the upper cover 3. A tape fitting portion 39 into which a double-sided tape 37 is fitted is formed in the middle of the left and right sides of the board fitting portion 36. The upper cover 3 is attached to the circuit board 12 by the double-sided tape 37. As shown in FIGS. 2 and 3, an insulating seal 40 is disposed on the upper surface of the sealing plate 9 of the unit cell 2 from the vicinity of the left and right center to the left end. The side lead wire 15 is prevented from contacting the sealing plate 9 of the unit cell 2.

下側カバー６の下面には、図３に示すごとく、外部機器の嵌合部が嵌まり込む嵌合凹部４１が形成されている。下側カバー６の上面の左右両端には、図２に示すごとく、リング状の溝４２で囲まれた接着部４３がそれぞれ設けられており、下側カバー６の上面の左右中央部には、両面テープ４５が嵌め込まれるテープ嵌合部４６が凹み形成されている。接着部４３には、接着剤が塗布され、その接着剤と両面テープ４５とで下側カバー６が素電池２の下面に貼り付けられる。   As shown in FIG. 3, a fitting recess 41 into which a fitting portion of an external device is fitted is formed on the lower surface of the lower cover 6. As shown in FIG. 2, adhesive portions 43 surrounded by ring-shaped grooves 42 are respectively provided at the left and right ends of the upper surface of the lower cover 6. A tape fitting portion 46 into which the double-sided tape 45 is fitted is formed as a recess. An adhesive is applied to the adhesive portion 43, and the lower cover 6 is attached to the lower surface of the unit cell 2 with the adhesive and the double-sided tape 45.

素電池２の前後左右の周面は、図６に示すごとく、絶縁性を有するラベル４７が貼り付けられて覆われる。ラベル４７の外面には、所定のロゴタイプなどの印刷が施される。   The front, rear, left and right peripheral surfaces of the unit cell 2 are covered with an insulating label 47 as shown in FIG. A predetermined logo type or the like is printed on the outer surface of the label 47.

次に、前記中間組立品の組み立て要領を説明する。ＰＴＣ１１の一端に端子側リード線１３の一端を接合し、そのリード線１３の他端を負極端子１０に接合する。また、ＰＴＣ１１の他端に基板側リード線１５の一端を接合し、そのリード線１５の他端を回路基板１２の左端部に接合する。   Next, the assembly procedure of the intermediate assembly will be described. One end of the terminal-side lead wire 13 is joined to one end of the PTC 11, and the other end of the lead wire 13 is joined to the negative electrode terminal 10. Further, one end of the board-side lead wire 15 is joined to the other end of the PTC 11, and the other end of the lead wire 15 is joined to the left end portion of the circuit board 12.

回路基板１２の右端部にリード板１６を接合し、素電池２の封口板９の上面の右側寄りにリード板１７を接合する。基板側リード線１５をＵ字状に湾曲させて素電池２の上側に回路基板１２を配し、リード板１６とリード板１７とを接合する。上側カバー３に両面テープ３７を貼り付け、上側カバー３の基板嵌合部３６に回路基板１２を嵌め込んで、回路基板１２に上側カバー３を固定し、中間組立品を形成する。 A lead plate 16 is joined to the right end portion of the circuit board 12, and a lead plate 17 is joined to the right side of the upper surface of the sealing plate 9 of the unit cell 2. The circuit board 12 is arranged on the upper side of the unit cell 2 by bending the substrate-side lead wire 15 in a U shape, and the lead plate 16 and the lead plate 17 are joined. A double-sided tape 37 is affixed to the upper cover 3, the circuit board 12 is fitted into the board fitting portion 36 of the upper cover 3, and the upper cover 3 is fixed to the circuit board 12 to form an intermediate assembly.

この中間組立品を樹脂モールド５の成形用金型内に装着することで、金型の内面で上側カバー３が押されて、各位置決め突起３３の下端が素電池２の封口板９の上面にそれぞれ当接し、上側カバー３と素電池２の上面との間隔が規制される。この状態で、上側カバー３と素電池２の上面との間に樹脂モールド５が成形される。   By mounting this intermediate assembly in the molding die of the resin mold 5, the upper cover 3 is pushed by the inner surface of the die, and the lower end of each positioning projection 33 is placed on the upper surface of the sealing plate 9 of the unit cell 2. Each contact | abuts, and the space | interval of the upper cover 3 and the upper surface of the unit cell 2 is controlled. In this state, the resin mold 5 is formed between the upper cover 3 and the upper surface of the unit cell 2.

この後、下側カバー６の各接着部４３に接着剤が塗布され、その接着剤と両面テープ４５とで下側カバー６が素電池２の下面に貼り付けられる。素電池２の前後左右の周面には、ラベル４７が貼り付けられ、また上側カバー３の上面には、水没判定シール３２が貼り付けられる。   Thereafter, an adhesive is applied to each adhesive portion 43 of the lower cover 6, and the lower cover 6 is attached to the lower surface of the unit cell 2 with the adhesive and the double-sided tape 45. A label 47 is affixed to the front, rear, left and right peripheral surfaces of the unit cell 2, and a submergence determination seal 32 is affixed to the upper surface of the upper cover 3.

（実施例２） 実施例２では、上側カバー３の各位置決め突起３３に凹部３５・３５を形成することに代えて、図７に示すごとく、アンカー手段として上側カバー３の下面の左右中間の前後縁（図７では上下）に板状のアンカー部４９・４９をそれぞれ下方に向けて突設する。 (Example 2) In Example 2, instead of forming the recesses 35, 35 in the positioning protrusions 33 of the upper cover 3, as shown in FIG. Plate-like anchor portions 49 and 49 are provided so as to project downward at the edges (up and down in FIG. 7).

各アンカー部４９の側面には、樹脂モールド５の溶融樹脂が通る貫通孔５０を左右に３個ずつ並べて貫通状に設けてある。なお、アンカー部４９の上下寸法は位置決め突起３３の上下寸法よりも短い。その他の点は、実施例１と同じであるので説明を省略する。   On the side surface of each anchor portion 49, three through holes 50 through which the molten resin of the resin mold 5 passes are arranged side by side and provided in a penetrating manner. The vertical dimension of the anchor portion 49 is shorter than the vertical dimension of the positioning projection 33. Since the other points are the same as those of the first embodiment, description thereof is omitted.

実施例２では、図８に示すごとく各アンカー部４９の各貫通孔５０に樹脂モールド５がそれぞれ入り込むことで、樹脂モールド５に対する上側カバー３の抜け止めが図られる。なお、各アンカー部４９に配する貫通孔５０の個数は少なくとも１個あればよい。各アンカー部４９は、位置決め突起３３と別に設けてもよく、位置決め突起３３と繋がるように設けてもよい。   In Example 2, as shown in FIG. 8, the resin mold 5 enters the respective through holes 50 of the anchor portions 49, thereby preventing the upper cover 3 from coming off from the resin mold 5. In addition, the number of the through holes 50 arranged in each anchor portion 49 may be at least one. Each anchor portion 49 may be provided separately from the positioning projection 33 or may be provided so as to be connected to the positioning projection 33.

実施例１の電池パックの上側カバーの斜視図The perspective view of the upper cover of the battery pack of Example 1 実施例１の電池パックの中間組立品の分解斜視図1 is an exploded perspective view of an intermediate assembly of a battery pack of Example 1. FIG. 実施例１の電池パックの縦断正面図Vertical front view of the battery pack of Example 1 実施例１の要部を示す縦断正面図Longitudinal front view showing the main part of Example 1 図４のＡ−Ａ線断面図AA line sectional view of FIG. 実施例１の電池パックの正面図Front view of the battery pack of Example 1 実施例２の上側カバーの斜視図The perspective view of the upper cover of Example 2. 実施例２の要部を示す縦断側面図Longitudinal side view showing the main part of Example 2

符号の説明Explanation of symbols

１ 電池パック
２ 素電池
３ 上側カバー
５ 樹脂モールド
１１ ＰＴＣ
１２ 回路基板
３３ 位置決め突起
３５ 凹部
４９ アンカー部
５０ 貫通孔 1 Battery Pack 2 Cell 3 Upper Cover 5 Resin Mold 11 PTC
12 Circuit board 33 Positioning protrusion 35 Recess 49 Anchor part 50 Through hole

Claims (3)

素電池の上側に配される電装品と、この電装品の上側に配される上側カバーと、この上側カバーと素電池の上面との間に成形されて素電池の上面に電装品と上側カバーとを一体化する樹脂モールドとを含み、
前記上側カバーの下面側には、下端が素電池の封口板の上面にそれぞれ当接することで上側カバーと素電池の上面との間隔を規制して当該上側カバーと前記素電池の上面との間に樹脂モールド成形用の溶融樹脂を注入する隙間を確保する位置決め突起がそれぞれ下方に向けて突設されているとともに、
この位置決め突起に、樹脂モールドに対する上側カバーの抜け止めを図るためのアンカー手段として、凹み状に形成された凹部が設けられていることを特徴とする電池パック。 And electrical components arranged on the upper side of the cell, and an upper cover disposed on the upper side of the electrical equipment, electrical components and the upper cover is molded on the upper surface of the unit cell between the upper surface of the upper cover and the unit cell And a resin mold that integrates
On the lower surface side of the upper cover, the lower end is in contact with the upper surface of the sealing plate of the unit cell, so that the distance between the upper cover and the upper surface of the unit cell is regulated and the upper cover and the upper surface of the unit cell are between with position-decided Me projections that to ensure the gap for injecting a molten resin for resin molding is projected downward, respectively,
A battery pack , wherein the positioning protrusion is provided with a recess formed as a recess as an anchoring means for preventing the upper cover from coming off from the resin mold. 素電池の上側に配される電装品と、この電装品の上側に配される上側カバーと、この上側カバーと素電池の上面との間に成形されて素電池の上面に電装品と上側カバーとを一体化する樹脂モールドとを含み、
前記上側カバーの下面側には、下端が素電池の封口板の上面にそれぞれ当接することで上側カバーと素電池の上面との間隔を規制して当該上側カバーと前記素電池の上面との間に樹脂モールド成形用の溶融樹脂を注入する隙間を確保する位置決め突起がそれぞれ下方に向けて突設されているとともに、
樹脂モールドに対する上側カバーの抜け止めを図るためのアンカー手段として、上側カバーの下面から下方に向けて突設されて側面に溶融樹脂の入りこむ貫通口が形成されたアンカー部が設けられていることを特徴とする電池パック。
 An electrical component disposed on the upper side of the unit cell, an upper cover disposed on the upper side of the electrical component, and an electrical component and an upper cover formed on the upper surface of the unit cell, formed between the upper cover and the upper surface of the unit cell. And a resin mold that integrates
On the lower surface side of the upper cover, the lower end is in contact with the upper surface of the sealing plate of the unit cell, so that the distance between the upper cover and the upper surface of the unit cell is regulated and the upper cover and the upper surface of the unit cell are between Positioning projections for securing a gap for injecting a molten resin for resin molding into each are projected downward, respectively,
As an anchor means for preventing the upper cover from coming off from the resin mold, an anchor portion that protrudes downward from the lower surface of the upper cover and has a through-hole into which the molten resin enters is provided on the side surface. Battery pack featuring .
上側カバーの下面には、電装品である回路基板が嵌め込まれる基板嵌合部が凹み形成されており、
この基板嵌合部内における回路基板の板面と対向する面には両面テープが嵌め込まれるテープ嵌合部が凹み形成されており、
このテープ嵌合部に嵌め込まれる両面テープを介して回路基板が上側カバーの基板嵌合部内に貼り付け固定される、請求項１または２記載の電池パック。 On the lower surface of the upper cover, a board fitting portion into which a circuit board which is an electrical component is fitted is formed in a recess,
A tape fitting portion into which a double-sided tape is fitted is formed on the surface facing the plate surface of the circuit board in the board fitting portion,
The battery pack according to claim 1 or 2 , wherein the circuit board is stuck and fixed in the board fitting portion of the upper cover through a double-sided tape fitted into the tape fitting portion .
JP2005153134A 2005-05-25 2005-05-25 Battery pack Expired - Fee Related JP4794908B2 (en)

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JP2005153134A JP4794908B2 (en) 2005-05-25 2005-05-25 Battery pack
US11/884,355 US20100143793A1 (en) 2005-05-25 2006-05-02 Battery Pack
KR1020077027276A KR101233261B1 (en) 2005-05-25 2006-05-02 Battery pack
CN2006800140091A CN101167198B (en) 2005-05-25 2006-05-02 Battery pack
PCT/JP2006/309154 WO2006126379A1 (en) 2005-05-25 2006-05-02 Battery pack

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