JP3867533B2 - Battery pack - Google Patents

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Publication number
JP3867533B2
JP3867533B2 JP2001264780A JP2001264780A JP3867533B2 JP 3867533 B2 JP3867533 B2 JP 3867533B2 JP 2001264780 A JP2001264780 A JP 2001264780A JP 2001264780 A JP2001264780 A JP 2001264780A JP 3867533 B2 JP3867533 B2 JP 3867533B2
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Japan
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battery
group
horizontal
vertical
storage
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JP2001264780A
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JP2003077437A (en
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一人 外山
真佐雄 山本
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Panasonic Electric Works Co Ltd
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Matsushita Electric Works Ltd
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    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/10Energy storage using batteries

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  • Battery Mounting, Suspending (AREA)

Description

【0001】
【発明の属する技術分野】
本発明は、電池パックに関し、詳しくは、円柱状の多くの畜電池を安定的に保持しながら充電時にパック中央部の蓄電池が発熱して劣化するのを防止しようとする技術に係るものである。
【0002】
【従来の技術】
従来、円柱状の多くの畜電池1…をパック状にまとめて機器本体に装着する電池パックにおいては、図7に示すように、軸方向を揃えた円柱状の蓄電池1…を多数本を並置して例えば上下に分割可能となっている電池ハウジング9aに収納されるものである。又、図8に示すように、軸方向を横向きとして並置した蓄電池の両端部も含めた外周を緊締カバー10にて囲繞して左右に分割した電池ハウジング9b、9c内に収納されるものである。
【0003】
【発明が解決しようとする課題】
ところで、このように多数本の蓄電池1…を並置して外周を押さえて収納する構成においては、電池パックを充電する際に、パック中心部の畜電池1…の放熱が妨げられて昇温が促進され、電池の寿命が短くなるという問題がある。
【0004】
更に、多数本の蓄電池1…を並置して外周を押さえることから、中央部の蓄電池1…の固定強度を安定化でき難いという問題がある。しかも、硬質の緊締カバー10と電池ハウジング9b、9cとの間でリード線11を挟んで断線させることがあるなどという問題があった。
【0005】
本発明はこのような問題に鑑みてなされたものであり、多くの畜電池を安定的に保持しながら充電時に発熱して劣化するのを防止することができ、又、リード線を断線させるおそれがない電池パックを提供することを課題とするものである。
【0006】
【課題を解決するための手段】
請求項1に係る発明においては、円柱形の多くの蓄電池1…を軸方向が縦向きとなる縦置きグループAと横向きとなる横置きグループBとに分け、縦置きグループAと横置きグループBとの間に各グループA、Bの蓄電池1…を固定する固定部2a、2bを両面に形成した電池固定台3を備え、縦置きグループAの外形寸法は、蓄電池1…の一端側を揃えて並置して横置きした横置きグループBの外形寸法に比べて大きくし、横置きグループBの蓄電池1の軸方向の両側に配線スペース4を形成していることを特徴とするものである。このような構成によれば、多くの蓄電池1…を縦置きグループAと横置きグループBとに分けることで、全ての蓄電池1…を一方向に揃える構成に比べて各グループA、Bにおける中央部の蓄電池1…の放熱を促進することができ、充電時に中央部の蓄電池1…が昇温して充電が阻害されたり、電池寿命が短くなるなどの問題を防止することができる。それでいて、縦置きグループAと横置きグループBとの間には各グループA、Bの蓄電池1…を固定する固定部2a、2bを形成した電池固定台3を設けていることから、各グループA、Bの蓄電池1…を各固定部2a、2bにおいて安定的に固定することができる。
【0007】
また、請求項1に係る発明においては、縦置きグループAの外形寸法は、蓄電池1…の一端側を揃えて並置して横置きした横置きグループBの外形寸法に比べて大きくし、横置きグループBの蓄電池1…の軸方向の両側に配線スペース4を形成していることを特徴とするものである。このような構成によれば、横置きグループBの各蓄電池1…の軸方向の両端部に配線スペース4を形成することができ、横置きグループBのリード線11を挟んで断線させることがない。
【0008】
請求項2に係る発明においては、電池固定台3の横置きグループB側の固定部2bは、横置きグループBの個々の蓄電池1…の周側面を固定可能に構成していることを特徴とするものである。このような構成によれば、横置きグループBの個々の蓄電池1…の固定を安定化させることができる。
【0009】
請求項3に係る発明おいては、縦置きグループAの蓄電池1…の上に横置きグループBの蓄電池1を配置し、横置きグループBの蓄電池1の上に一つの縦置き蓄電池1aを配置し、縦置きグループAと横置きグループBの蓄電池1…の間に配設した電池固定台3に上記縦置き蓄電池1aを保持する保持部5を形成していることを特徴とするものである。このような構成によれば、横置きグループBの上に一つの縦置き蓄電池1を配することで、電池パック12の頂部に一つの縦置き蓄電池1を凸の状態に存在させることができ、電池パック12を機器本体6に接続しやすい構成にできながら、該縦置き蓄電池1は電池固定台3に一体に形成した保持部5にて保持でき、電池パック12における上記の蓄電池1…の配置構成を容易に得ることができる。
【0010】
請求項4に係る発明においては、縦置き蓄電池1aを保持する保持部5は板状に形成して横置きグループBの蓄電池1、1間に挿入していることを特徴とするものである。このような構成によれば、頂部の縦置き蓄電池1aを支持する保持部5は板状となって下段の横置きグループBの蓄電池1、1の間に挿入されて横置きグループBの蓄電池1、1の保持にも機能させることができ、横置きグループBの蓄電池1…の固定をより高めることができる。
【0011】
請求項5に係る発明においては、電池固定台3に保持部5を一体的に設けてあるから、電池固定台3における蓄電池1…の固定機能を充分なものにできながら、電池固定台3の構成を簡素化することができる。
【0012】
請求項6に係る発明においては、電池パックに機器本体6に着脱自在に連結するフック7を設け、フック7を弾性変位させて機器本体6との連結を解除するばね片13をフック7に設け、電池固定台3の側面にばね片13を受けて弾性変位を許容するばね受面8を形成していることを特徴とするものである。このような構成によれば、フック7を例えば押し込むなどして弾性変位させて機器本体6との連結を解除するのに際して、フック7に設けたばね片13は電池固定台3の側面に形成されたばね受面8に受けられていることから、フック7を容易にかつ正確に弾性変位させることができ、フック7の操作を安定化させることができる。
【0013】
【発明の実施の形態】
以下、本発明の実施の形態を説明する。図1は本発明の実施の一形態を示す分解斜視図である。図2は電池パックの斜視図である。図6は電池パックを機器本体に取り付けた側面図である。
【0014】
機器本体6は例えば電動ドライバーであり、円柱状の蓄電池1…の複数を備えた電池パック12にフック7を取り付け、フック7の操作によって電池パック12を機器本体6に着脱自在に取り付け、必要に応じて外して蓄電池1…の充電をおこなうものである。上記電動ドライバーにおいては、高ワット化により、電池パック12には蓄電池1…の数量が増すのであり、円柱状の多くの蓄電池1…を安定的に保持し難く、又、充電時に蓄電池グループの中央部のものは放熱が阻害されて発熱が促進され、所定通りの充電が阻害され、放充電を繰り返すことで、劣化が進むものである。
【0015】
本発明の電池パック12においては、多くの畜電池1…を安定的に保持しながら充電時に発熱して劣化するのを防止するものである。以下、詳述する。
【0016】
円柱形の多くの蓄電池1…を軸方向が縦向きとなる縦置きグループAと横向きとなる横置きグループBとに分け、縦置きグループAと横置きグループBとの間に各グループA、Bの蓄電池1…を固定する固定部2a、2bを両面に形成した電池固定台3を配設している。具体的には、縦置きグループAの蓄電池1…は例えば11本であり、中央部に2本、外周部に9本を並べるのであり、中央部の2本の蓄電池1、1の近傍には隙間14を形成して放熱を図っている。横置きグループBの蓄電池1…は例えば3本である。
【0017】
電池固定台3の外周部には下面側に円弧片15…を突出して固定部2aとし、円弧片15にて蓄電池1…の上端部の外周部を押さえて縦置きグループAの蓄電池1…を固定している。電池固定台3の上面側に円弧状のリブ16…を形成して固定部2bとし、円弧状のリブ16にて円柱状の蓄電池1の周側面を載置して横置きグループBの蓄電池1を保持するようにしている。
【0018】
このように、多くの蓄電池1…を縦置きグループAと横置きグループBとに分けることで、全ての蓄電池1…を一方向に揃える構成に比べて各グループA、Bにおける中央部の蓄電池1…の放熱を促進することができ、充電時に中央部の蓄電池1…が昇温して充電が阻害されたり、電池寿命が短くなるなどの問題を防止することができるのである。それでいて、縦置きグループAと横置きグループBとの間には各グループA、Bの蓄電池1…を固定する固定部2a、2bを形成した電池固定台3を設けていることから、各グループA、Bの蓄電池1…を各固定部2a、2bにおいて安定的に固定することができるのである。
【0019】
この場合、電池固定台3の横置きグループB側の固定部2bは円弧状のリブ16を備えていて、横置きグループBの個々の蓄電池1…の周側面を固定していることから、横置きグループBの個々の蓄電池1…の固定を安定化させることができるのである。
【0020】
ところで、縦置きグループAの蓄電池1…の外形寸法は、蓄電池1…を一端側を揃えて並置して横置きした横置きグループBの蓄電池1…の外形寸法に比べて大きくし、横置きグループBの蓄電池1…の軸方向の両側に配線スペース4を形成していることから、横置きグループBの各蓄電池1…の軸方向の両端部に配線スペース4を形成することができるのであり、横置きグループB等のリード線11を挟んで断線させることがないのである。
【0021】
更に、横置きグループBの蓄電池1の上に一つの縦置き蓄電池1aを配置し、縦置きグループAと横置きグループBの蓄電池1…の間に配設した電池固定台3に上記縦置き蓄電池1aを保持する保持部5を形成している。このことから、横置きグループBの上に一つの縦置き蓄電池1を配することで、電池パック12の頂部に一つの縦置き蓄電池1aを凸の状態に存在させることができ、電池パック12を機器本体6に接続しやすい構成にできながら、該縦置き蓄電池1aは電池固定台3に一体に形成した保持部5にて保持でき、電池パック12における上記の蓄電池1…の配置構成を容易に得ることができるのである。
【0022】
この場合、縦置き蓄電池1aを保持する保持部5は例えば断面コ字状の板状に形成して横置きグループBの蓄電池1、1間に挿入していることから、頂部の縦置き蓄電池1aを支持する保持部5は断面コ字状の板状となって下段の横置きグループBの蓄電池1、1の間に挿入されて横置きグループBの蓄電池1、1の保持及び隙間17を形成することができ、横置きグループBの蓄電池1…の固定をより高め、放熱性を高めることができるのである。又、保持部5にはリブ16が付設していて保持部5の起立強度を高めている。
【0023】
更に、電池固定台3に保持部5を一体的に設けてあることから、電池固定台3における蓄電池1…の固定機能を充分なものにできながら、電池固定台3の構成を簡素化することができるのである。
【0024】
電池ハウジング9は左右の電池ハウジング18、19に分割し、両ハウジング18、19の上下中間部に保持リブ20、20を形成し、縦置きグループAの蓄電池1…の周側面を保持リブ20、20によって保持し、縦置きグループAの蓄電池1…を両ハウジング18、19によっても強固に固定することができるようにしている。
【0025】
左右の電池ハウジング18(19)には窓孔21が形成され、窓孔21には上端部にフック7を形成した基板22を臨ませ、基板22の背面にはばね片13を取り付け、電池固定台3にばね受面8を設け、しかして、ばね片13を弾性変形させてフック7の上面を電池ハウジング18(19)の窓孔21の孔縁に対して、又、基板22の下縁部等を窓孔21の孔縁に対して摺動させて電池ハウジング18(19)の内方に押し込むことで、フック7を窓孔21より後退させて機器本体6との連結を解除できるようにしている。
【0026】
このように、電池パック12に機器本体6に着脱自在に連結するフック7を設け、フック7を弾性変位させて機器本体6との連結を解除するばね片13をフック7に設け、電池固定台3の側面にばね片13を受けて弾性変位を許容するばね受面8を形成していることから、フック7を例えば押し込むなどして弾性変位させて機器本体6との連結を解除するのに際して、フック7を容易にかつ正確に弾性変位させることができ、フック7の操作を安定化させることができるのである。
【0027】
【発明の効果】
請求項1に係る発明においては、円柱形の多くの蓄電池を軸方向が縦向きとなる縦置きグループと横向きとなる横置きグループとに分け、縦置きグループと横置きグループとの間に各グループの蓄電池を固定する固定部を両面に形成した電池固定台を備え、縦置きグループの外形寸法は、蓄電池の一端側を揃えて並置して横置きした横置きグループの外形寸法に比べて大きくし、横置きグループの蓄電池の軸方向の両側に配線スペースを形成しているから、多くの蓄電池を縦置きグループと横置きグループとに分けることで、全ての蓄電池を一方向に揃える構成に比べて各グループにおける中央部の蓄電池の放熱を促進することができ、充電時に中央部の蓄電池が昇温して充電が阻害されたり、電池寿命が短くなるなどの問題を防止することができるという利点がある。それでいて、縦置きグループと横置きグループとの間には各グループの蓄電池を固定する固定部を形成した電池固定台を設けていることから、各グループの蓄電池を各固定部において安定的に固定することができるという利点がある。
【0028】
また、請求項1に係る発明においては、縦置きグループの外形寸法は、蓄電池を一端側を揃えて並置して横置きした横置きグループの外形寸法に比べて大きくし、横置きグループの蓄電池の軸方向の両側に配線スペースを形成しているから、横置きグループの各蓄電池の軸方向の両端部に配線スペースを形成することができ、横置きグループのリード線を挟んで断線させることがないという利点がある。
【0029】
請求項2に係る発明においては、請求項1の効果に加えて、電池固定台の横置きグループ側の固定部は、横置きグループの個々の蓄電池の周側面を固定可能に構成しているから、横置きグループの個々の蓄電池の固定を安定化させることができるという利点がある。
【0030】
請求項3に係る発明おいては、請求項1の効果に加えて、縦置きグループの蓄電池の上に横置きグループの蓄電池を配置し、横置きグループの蓄電池の上に一つの縦置き蓄電池を配置し、縦置きグループと横置きグループの蓄電池の間に配設した電池固定台に上記縦置き蓄電池を保持する保持部を形成しているから、横置きグループの上に一つの縦置き蓄電池を配することで、電池パックの頂部に一つの縦置き蓄電池を凸の状態に存在させることができ、電池パックを機器本体に接続しやすい構成にできながら、該縦置き蓄電池は電池固定台に一体に形成した保持部にて保持でき、電池パックにおける上記の蓄電池の配置構成を容易に得ることができるという利点がある。
【0031】
請求項4に係る発明においては、請求項3の効果に加えて、縦置き蓄電池を保持する保持部は板状に形成して横置きグループの蓄電池間に挿入しているから、頂部の縦置き蓄電池を支持する保持部は板状となって下段の横置きグループの蓄電池の間に挿入されて横置きグループの蓄電池の保持にも機能させることができ、横置きグループの蓄電池の固定をより高めることができるという利点がある。
【0032】
請求項5に係る発明においては、請求項3又は4の効果に加えて、電池固定台に保持部を一体的に設けてあるから、電池固定台における蓄電池の固定機能を充分なものにできながら、電池固定台の構成を簡素化することができるという利点がある。
【0033】
請求項6に係る発明においては、請求項1の効果に加えて、電池パックに機器本体に着脱自在に連結するフックを設け、フックを弾性変位させて機器本体との連結を解除するばね片をフックに設け、電池固定台の側面にばね片を受けて弾性変位を許容するばね受面を形成しているから、フックを例えば押し込むなどして弾性変位させて機器本体との連結を解除するのに際して、フックに設けたばね片は電池固定台の側面に形成されたばね受面に受けられていることから、フックを容易にかつ正確に弾性変位させることができ、フックの操作を安定化させることができるという利点がある。
【図面の簡単な説明】
【図1】本発明の実施の一形態を示す分解斜視図である。
【図2】同上の電池パックの斜視図である。
【図3】同上の一方の電池ハウジングを外した斜視図である。
【図4】同上の電池固定台の斜視図である。
【図5】同上の電池パックの断面図である。
【図6】同上の電池パックを機器本体に取り付けた側面図である。
【図7】従来例を示し、(a)は電池パックの斜視図、(b)は蓄電池の配列を示す斜視図である。
【図8】他の従来例の分解斜視図である。
【符号の説明】
1 蓄電池
2a 固定部
2b 固定部
3 電池固定台
4 配線スペース
5 保持部
6 機器本体
7 フック
8 ばね受面
13 ばね片
[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a battery pack, and more particularly, to a technique for preventing a storage battery at the center of the pack from generating heat and deteriorating during charging while stably holding many cylindrical batteries. .
[0002]
[Prior art]
2. Description of the Related Art Conventionally, in a battery pack in which a large number of cylindrical batteries 1 are assembled into a pack and attached to a device body, a large number of cylindrical storage batteries 1 aligned in the axial direction are juxtaposed as shown in FIG. For example, the battery housing 9a can be divided vertically. Further, as shown in FIG. 8, the outer periphery including both ends of the storage batteries juxtaposed side by side in the axial direction is surrounded by the tightening cover 10 and is housed in battery housings 9 b and 9 c divided into left and right. .
[0003]
[Problems to be solved by the invention]
By the way, in such a configuration in which a large number of storage batteries 1 are juxtaposed and stored while pressing the outer periphery, when the battery pack is charged, heat dissipation is hindered due to heat dissipation of the battery 1 in the center of the pack. There is a problem that the battery life is shortened.
[0004]
Furthermore, since a large number of storage batteries 1 are juxtaposed to hold the outer periphery, there is a problem that it is difficult to stabilize the fixing strength of the central storage batteries 1. In addition, there is a problem that the lead wire 11 may be sandwiched between the hard tightening cover 10 and the battery housings 9b and 9c.
[0005]
The present invention has been made in view of such a problem, and can stably prevent heat generation and deterioration during charging while stably holding many livestock batteries, and may lead to disconnection of lead wires. It is an object of the present invention to provide a battery pack without any problem.
[0006]
[Means for Solving the Problems]
In the invention according to claim 1, a large number of cylindrical storage batteries 1 are divided into a vertical group A in which the axial direction is vertical and a horizontal group B in which the axial direction is vertical, and the vertical group A and horizontal group B are separated. Is provided with a battery fixing base 3 having fixing portions 2a and 2b for fixing the storage batteries 1 of the groups A and B on both sides, and the external dimensions of the vertically placed group A are aligned with one end side of the storage batteries 1. In this case, the outer dimensions of the laterally placed group B placed side by side are larger than those of the laterally placed group B, and wiring spaces 4 are formed on both sides in the axial direction of the storage batteries 1 of the laterally placed group B. According to such a configuration, by dividing a large number of storage batteries 1 into a vertically placed group A and a horizontally placed group B, compared to a configuration in which all of the storage batteries 1 are aligned in one direction, the center in each group A, B The heat storage of the storage batteries 1... Can be promoted, and the charging of the central storage batteries 1. In addition, since each of the group A is provided between the vertical group A and the horizontal group B, there is provided a battery fixing base 3 in which fixing portions 2a and 2b for fixing the storage batteries 1 of the groups A and B are formed. , B storage batteries 1 can be stably fixed at the fixing portions 2a, 2b.
[0007]
In the invention according to claim 1, the outer shape dimension of the vertical group A was larger than the outer shape dimensions of the horizontal and the horizontal groups B in juxtaposition to align the battery 1 ... one end side of the The wiring space 4 is formed on both sides in the axial direction of the storage batteries 1 of the horizontal group B. According to such a configuration, the wiring space 4 can be formed at both ends in the axial direction of the storage batteries 1 of the horizontal group B, and the lead wires 11 of the horizontal group B are not disconnected. .
[0008]
In the invention which concerns on Claim 2, the fixing | fixed part 2b of the horizontal mounting group B side of the battery fixing stand 3 is comprised so that the surrounding side surface of each storage battery 1 ... of horizontal mounting group B is fixable, It is characterized by the above-mentioned. To do. According to such a configuration, fixing of the individual storage batteries 1 of the horizontal group B can be stabilized.
[0009]
In the invention which concerns on Claim 3, the storage battery 1 of the horizontal group B is arrange | positioned on the storage battery 1 ... of the vertical installation group A, and one vertical storage battery 1a is arrange | positioned on the storage battery 1 of the horizontal installation group B And the holding part 5 which hold | maintains the said vertical storage battery 1a is formed in the battery fixing stand 3 arrange | positioned between the storage batteries 1 ... of the vertical installation group A and the horizontal installation group B, It is characterized by the above-mentioned. . According to such a configuration, by placing one vertical storage battery 1 on the horizontal group B, one vertical storage battery 1 can be present in a convex state on the top of the battery pack 12, While the battery pack 12 can be configured to be easily connected to the device body 6, the vertical storage battery 1 can be held by the holding portion 5 formed integrally with the battery fixing base 3, and the arrangement of the storage batteries 1 in the battery pack 12. The configuration can be easily obtained.
[0010]
In the invention which concerns on Claim 4, the holding | maintenance part 5 holding the vertical storage battery 1a is formed in plate shape, and is inserted between the storage batteries 1 and 1 of the horizontal installation group B, It is characterized by the above-mentioned. According to such a structure, the holding | maintenance part 5 which supports the vertical storage battery 1a of a top part becomes plate shape, and is inserted between the storage batteries 1 and 1 of the horizontal installation group B of the lower stage, and the storage battery 1 of horizontal installation group B 1 can be made to function, and the fixing of the storage batteries 1 of the horizontal group B can be further enhanced.
[0011]
In the invention which concerns on Claim 5, since the holding | maintenance part 5 is integrally provided in the battery fixing stand 3, the fixing function of the storage batteries 1 ... in the battery fixing stand 3 can be made sufficient, The configuration can be simplified.
[0012]
In the invention according to claim 6 , the battery pack is provided with a hook 7 that is detachably connected to the device main body 6, and the spring piece 13 that elastically displaces the hook 7 to release the connection with the device main body 6 is provided on the hook 7. A spring receiving surface 8 that receives the spring piece 13 and allows elastic displacement is formed on the side surface of the battery fixing base 3. According to such a configuration, the spring piece 13 provided on the hook 7 is formed on the side surface of the battery fixing base 3 when the hook 7 is elastically displaced by, for example, pushing it in to release the connection with the device body 6. Since it is received by the receiving surface 8, the hook 7 can be elastically displaced easily and accurately, and the operation of the hook 7 can be stabilized.
[0013]
DETAILED DESCRIPTION OF THE INVENTION
Embodiments of the present invention will be described below. FIG. 1 is an exploded perspective view showing an embodiment of the present invention. FIG. 2 is a perspective view of the battery pack. FIG. 6 is a side view of the battery pack attached to the device body.
[0014]
The device body 6 is, for example, an electric screwdriver, and a hook 7 is attached to a battery pack 12 having a plurality of cylindrical storage batteries 1... And the battery pack 12 is detachably attached to the device body 6 by operating the hooks 7. Accordingly, the storage batteries 1 are charged in accordance with the removal. In the electric driver, the battery pack 12 increases the quantity of the storage batteries 1 due to the increase in wattage, and it is difficult to stably hold a large number of cylindrical storage batteries 1. In the part, heat radiation is inhibited and heat generation is promoted, charging as prescribed is inhibited, and deterioration is progressed by repeating discharging and discharging.
[0015]
In the battery pack 12 of the present invention, the large number of the live batteries 1 are stably held while preventing heat generation and deterioration during charging. Details will be described below.
[0016]
A large number of cylindrical storage batteries 1 are divided into a vertical group A in which the axial direction is vertical and a horizontal group B in which the axial direction is horizontal, and each group A, B is placed between the vertical group A and horizontal group B. A battery fixing base 3 having fixing portions 2a and 2b for fixing the storage batteries 1. Specifically, the number of storage batteries 1 in the vertically placed group A is 11, for example, and two batteries are arranged in the central part and nine batteries are arranged in the outer peripheral part, and in the vicinity of the two storage batteries 1 and 1 in the central part. A gap 14 is formed to radiate heat. The number of storage batteries 1 in the horizontal group B is three, for example.
[0017]
On the outer peripheral portion of the battery fixing base 3, the arc pieces 15 are projected on the lower surface side to form a fixing portion 2a. It is fixed. The arc-shaped ribs 16 are formed on the upper surface side of the battery fixing base 3 to form the fixing portion 2b, and the circumferential side surface of the cylindrical storage battery 1 is placed on the arc-shaped ribs 16 so that the storage batteries 1 of the horizontal group B are placed. To keep.
[0018]
In this way, by dividing the large number of storage batteries 1... Into the vertically placed group A and the horizontally placed group B, the storage batteries 1 at the center in each group A and B can be compared to a configuration in which all of the storage batteries 1. It is possible to promote the heat dissipation of ..., and to prevent problems such as charging being hindered by charging the central storage battery 1 during charging or shortening the battery life. In addition, since each of the group A is provided between the vertical group A and the horizontal group B, there is provided a battery fixing base 3 in which fixing portions 2a and 2b for fixing the storage batteries 1 of the groups A and B are formed. , B storage batteries 1 can be stably fixed at the fixing portions 2a and 2b.
[0019]
In this case, the fixing portion 2b on the side of the horizontal mounting group B of the battery fixing base 3 includes the arc-shaped ribs 16 and fixes the peripheral side surfaces of the individual storage batteries 1 of the horizontal mounting group B. It is possible to stabilize the fixing of the individual storage batteries 1.
[0020]
By the way, the external dimensions of the storage batteries 1 of the vertical group A are made larger than the external dimensions of the storage batteries 1 of the horizontal group B in which the storage batteries 1 are aligned and arranged side by side. Since the wiring spaces 4 are formed on both sides in the axial direction of the B storage batteries 1..., The wiring spaces 4 can be formed at both ends in the axial direction of the storage batteries 1 in the horizontal group B. There is no disconnection across the lead wires 11 of the horizontally placed group B or the like.
[0021]
Furthermore, one vertical storage battery 1a is arranged on the storage battery 1 of the horizontal group B, and the vertical storage battery is mounted on the battery fixing base 3 disposed between the vertical group A and the storage batteries 1 of the horizontal group B. A holding part 5 for holding 1a is formed. From this, by arranging one vertical storage battery 1 on the horizontal group B, one vertical storage battery 1a can be present in a convex state on the top of the battery pack 12, and the battery pack 12 The vertical storage battery 1a can be held by the holding unit 5 formed integrally with the battery fixing base 3 while being able to be easily connected to the device body 6, and the arrangement configuration of the storage batteries 1 in the battery pack 12 can be easily achieved. You can get it.
[0022]
In this case, since the holding part 5 holding the vertically installed storage battery 1a is formed, for example, in a plate shape having a U-shaped cross section and is inserted between the storage batteries 1 and 1 of the horizontally placed group B, the vertically installed storage battery 1a at the top. The holding part 5 that supports the battery is formed in a plate shape having a U-shaped cross section, and is inserted between the storage batteries 1 and 1 of the horizontal group B in the lower stage to form the holding and clearance 17 of the storage batteries 1 and 1 of the horizontal group B. Therefore, the fixing of the storage batteries 1 of the horizontally placed group B can be further improved and the heat dissipation can be improved. Further, a rib 16 is attached to the holding portion 5 to increase the standing strength of the holding portion 5.
[0023]
Furthermore, since the holding portion 5 is integrally provided on the battery fixing base 3, the structure of the battery fixing base 3 can be simplified while the fixing function of the storage batteries 1 in the battery fixing base 3 can be made sufficient. Can do it.
[0024]
The battery housing 9 is divided into left and right battery housings 18, 19, holding ribs 20, 20 are formed in the upper and lower intermediate portions of the two housings 18, 19, and the peripheral side surfaces of the storage batteries 1 of the vertically placed group A are held on the holding ribs 20, 19. 20, and the storage batteries 1 of the vertically placed group A can be firmly fixed also by the housings 18 and 19.
[0025]
A window hole 21 is formed in the left and right battery housings 18 (19). A substrate 22 having a hook 7 formed on the upper end thereof faces the window hole 21. A spring piece 13 is attached to the back of the substrate 22 to fix the battery. A spring receiving surface 8 is provided on the base 3, and the spring piece 13 is elastically deformed so that the upper surface of the hook 7 faces the hole edge of the window hole 21 of the battery housing 18 (19) and the lower edge of the substrate 22. The hook 7 is retracted from the window hole 21 and can be released from the connection with the device body 6 by sliding the portion or the like with respect to the hole edge of the window hole 21 and pushing it inward of the battery housing 18 (19). I have to.
[0026]
In this way, the battery pack 12 is provided with the hook 7 that is detachably connected to the device body 6, the spring piece 13 that elastically displaces the hook 7 to release the connection with the device body 6 is provided on the hook 7, and the battery fixing base Since the spring receiving surface 8 that receives the spring piece 13 and allows the elastic displacement is formed on the side surface of 3, when the hook 7 is pushed in, for example, is elastically displaced to release the connection with the device body 6. The hook 7 can be elastically displaced easily and accurately, and the operation of the hook 7 can be stabilized.
[0027]
【The invention's effect】
In the invention according to claim 1, many cylindrical storage batteries are divided into a vertically placed group whose axial direction is vertically oriented and a horizontally placed group that is horizontally oriented, and each group between the vertically placed group and the horizontally placed group. The vertical mounting group has an outer dimension that is larger than that of the horizontal group that is placed side-by-side with one end of the storage battery aligned. Because the wiring space is formed on both sides of the storage battery in the horizontal group, the storage battery is divided into a vertical group and a horizontal group, compared to a configuration in which all the storage batteries are aligned in one direction. It is possible to promote the heat dissipation of the central storage battery in each group, and to prevent problems such as the charging of the central storage battery to be disturbed by charging and the battery life being shortened during charging. There is an advantage that it can be. Nevertheless, since a battery fixing base in which a fixing part for fixing the storage battery of each group is formed is provided between the vertical group and the horizontal group, the storage battery of each group is stably fixed at each fixing part. There is an advantage that you can.
[0028]
In the invention according to claim 1, the outer shape dimension of the vertical group, larger than the outer shape dimensions of the horizontal and the horizontal groups in juxtaposition by aligning one end of the battery, transverse groups Since the wiring space is formed on both sides of the storage battery in the axial direction, wiring space can be formed at both ends in the axial direction of each storage battery in the horizontal group, and the lead wires of the horizontal group are sandwiched and disconnected. There is an advantage that there is no.
[0029]
In the invention according to claim 2, in addition to the effect of claim 1, the fixing part on the side of the horizontal mounting group of the battery fixing base is configured to fix the peripheral side surface of each storage battery of the horizontal mounting group. There is an advantage that the fixing of the individual storage batteries of the horizontal group can be stabilized.
[0030]
In the invention according to claim 3, in addition to the effect of claim 1, a horizontal group storage battery is arranged on the vertical group storage battery, and one vertical storage battery is arranged on the horizontal group storage battery. Since the holding unit for holding the vertical storage battery is formed on the battery fixing base disposed between the vertical group and the horizontal storage battery, one vertical storage battery is placed on the horizontal group. By arranging it, one vertical storage battery can exist in a convex state on the top of the battery pack, and the vertical storage battery can be integrated with the battery fixing base while being easy to connect the battery pack to the device body. There is an advantage that the arrangement configuration of the storage battery in the battery pack can be easily obtained.
[0031]
In the invention according to claim 4, in addition to the effect of claim 3, the holding portion for holding the vertical storage battery is formed in a plate shape and inserted between the storage batteries of the horizontal mounting group. The holding part that supports the storage battery is formed in a plate shape and inserted between the storage batteries of the horizontal group in the lower stage so that it can also function to hold the storage battery of the horizontal group, further enhancing the fixing of the storage battery of the horizontal group There is an advantage that you can.
[0032]
In the invention according to claim 5, in addition to the effect of claim 3 or 4 , since the holding portion is integrally provided on the battery fixing base, the fixing function of the storage battery in the battery fixing base can be made sufficient. There is an advantage that the configuration of the battery fixing base can be simplified.
[0033]
In the invention according to claim 6, in addition to the effect of claim 1, the battery pack is provided with a hook that is detachably connected to the device main body, and a spring piece that elastically displaces the hook to release the connection with the device main body. Since it is provided on the hook and a spring receiving surface is formed on the side surface of the battery fixing base to accept the spring piece and allow elastic displacement, the hook is pushed in, for example, and elastically displaced to release the connection with the device body. At this time, since the spring piece provided on the hook is received by the spring receiving surface formed on the side surface of the battery fixing base, the hook can be easily and accurately elastically displaced, and the operation of the hook can be stabilized. There is an advantage that you can.
[Brief description of the drawings]
FIG. 1 is an exploded perspective view showing an embodiment of the present invention.
FIG. 2 is a perspective view of the above battery pack.
FIG. 3 is a perspective view with one battery housing removed.
FIG. 4 is a perspective view of the battery fixing base.
FIG. 5 is a cross-sectional view of the battery pack.
FIG. 6 is a side view in which the battery pack is attached to the apparatus main body.
7A and 7B show a conventional example, in which FIG. 7A is a perspective view of a battery pack, and FIG. 7B is a perspective view showing an arrangement of storage batteries.
FIG. 8 is an exploded perspective view of another conventional example.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Storage battery 2a Fixing part 2b Fixing part 3 Battery fixing stand 4 Wiring space 5 Holding part 6 Equipment main body 7 Hook 8 Spring receiving surface 13 Spring piece

Claims (6)

円柱形の多くの蓄電池を軸方向が縦向きとなる縦置きグループと横向きとなる横置きグループとに分け、縦置きグループと横置きグループとの間に各グループの蓄電池を固定する固定部を両面に形成した電池固定台を備え、縦置きグループの外形寸法は、蓄電池の一端側を揃えて並置して横置きした横置きグループの外形寸法に比べて大きくし、横置きグループの蓄電池の軸方向の両側に配線スペースを形成して成ることを特徴とする電池パック。Many cylindrical storage batteries are divided into a vertical group with the axial direction vertical and a horizontal group with horizontal orientation, and the fixing part that fixes the storage battery of each group is placed on both sides between the vertical group and horizontal group The external dimensions of the vertically mounted group are larger than the external dimensions of the horizontally placed group that is placed side by side with one end side of the batteries aligned side by side. A battery pack comprising wiring spaces formed on both sides of the battery pack. 電池固定台の横置きグループ側の固定部は、横置きグループの個々の蓄電池の周側面を固定可能に構成して成ることを特徴とする請求項1記載の電池パック。The battery pack according to claim 1 , wherein the fixing portion on the side of the horizontal mounting group of the battery fixing base is configured to be able to fix the peripheral side surface of each storage battery of the horizontal mounting group . 縦置きグループの蓄電池の上に横置きグループの蓄電池を配置し、横置きグループの蓄電池の上に一つの縦置き蓄電池を配置し、縦置きグループと横置きグループの蓄電池の間に配設した電池固定台に上記縦置き蓄電池を保持する保持部を形成して成ることを特徴とする請求項1記載の電池パック。 A battery in which a horizontal group storage battery is placed on a vertical group storage battery, a single vertical storage battery is placed on the horizontal group storage battery, and the battery is disposed between the vertical group and horizontal group storage batteries. The battery pack according to claim 1, wherein a holding portion for holding the vertical storage battery is formed on a fixed base . 縦置き蓄電池を保持する保持部は板状に形成して横置きグループの蓄電池間に挿入して成ることを特徴とする請求項3記載の電池パック。 Vertical retaining unit according to claim 3 Symbol mounting of the battery pack characterized by comprising inserted between battery groups horizontally formed in a plate shape for holding the battery. 電池固定台に保持部を一体的に設けて成ることを特徴とする請求項3又は4記載の電池パック。 Claim 3 or 4 Symbol mounting of the battery pack characterized by comprising integrally provided on the holding portion to the fixed base battery. 電池パックに機器本体に着脱自在に連結するフックを設け、フックを弾性変位させて機器本体との連結を解除するばね片をフックに設け、電池固定台の側面にばね片を受けて弾性変位を許容するばね受面を形成して成ることを特徴とする請求項1記載の電池パック。 The battery pack is provided with a hook that is detachably connected to the device body, a spring piece that releases the connection with the device body by elastically displacing the hook is provided on the hook, and the spring piece is received on the side surface of the battery fixing base and elastically displaced. claim 1 Symbol placement of the battery pack, characterized in that by forming a tolerance to spring seat.
JP2001264780A 2001-08-31 2001-08-31 Battery pack Expired - Fee Related JP3867533B2 (en)

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JP4967248B2 (en) * 2005-04-22 2012-07-04 日立工機株式会社 Battery pack for cordless tools
JP2014139867A (en) * 2011-05-10 2014-07-31 Sanyo Electric Co Ltd Battery pack
GB2502819B (en) * 2012-06-08 2015-09-23 Dyson Technology Ltd Vacuum cleaner and a battery pack therefor
JP5389997B2 (en) * 2012-09-11 2014-01-15 株式会社マキタ Handy cleaner
WO2018038369A1 (en) 2016-08-25 2018-03-01 엘지전자 주식회사 Vacuum

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