JPH07282789A - Battery pack - Google Patents
Battery packInfo
- Publication number
- JPH07282789A JPH07282789A JP6069577A JP6957794A JPH07282789A JP H07282789 A JPH07282789 A JP H07282789A JP 6069577 A JP6069577 A JP 6069577A JP 6957794 A JP6957794 A JP 6957794A JP H07282789 A JPH07282789 A JP H07282789A
- Authority
- JP
- Japan
- Prior art keywords
- spacer
- case
- battery
- battery pack
- rib
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- 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
Landscapes
- Battery Mounting, Suspending (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】この発明はバッテリパックに関す
るものであり、特に、電動工具のような振動衝撃の激し
い環境下で使用されるバッテリパックに関するものであ
る。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a battery pack, and more particularly, to a battery pack used in an environment such as an electric tool which is subject to severe vibration and impact.
【０００２】[0002]
【従来の技術】近年、各種電気機器の小型軽量化が進
み、これらの電気機器の電源として携帯性に優れた電池
が使用されている。機器にはそれぞれ定格があるので、
使用される電池は定格に合わせた電圧や容量が求められ
る。このため、電気機器の電源として、電池を複数本直
列や並列に接続してケース内に収納したバッテリパック
が広く使用されている。2. Description of the Related Art In recent years, various electric devices have been reduced in size and weight, and batteries having excellent portability have been used as power sources for these electric devices. Since each device has its own rating,
Batteries used are required to have a voltage and capacity according to their ratings. Therefore, a battery pack in which a plurality of batteries are connected in series or in parallel and housed in a case is widely used as a power source for electric devices.
【０００３】このバッテリパックは、機器に必要な電圧
や容量に合わせて、収納される電池の本数が調整される
だけでなく、バッテリパックの形状についても、機器の
形状に合わせた形状が求められる。In this battery pack, not only the number of batteries to be accommodated is adjusted according to the voltage and capacity required for the device, but also the shape of the battery pack is required to match the shape of the device. .
【０００４】ここで、図１に電動工具の正面図を示す。
１は電動工具本体であり、電動工具１の取っ手部２にバ
ッテリパック３が装着されるようになっている。バッテ
リパック３は、前記取っ手部２の内部に挿入される被覆
部４と、電動工具１とともに外観形状を形成する露呈部
５とを有する。このように、バッテリパックは、電気機
器が必要とする電圧や容量が要求されると同時に、使用
される電気機器の形状に合わせた形状が要求される。こ
のため、電池の収納本数に応じた形状にバッテリパック
の形状を形成することが難しく、内部空間に電池では埋
め尽くせない余剰空間ができてしまう。特に、電動工具
は使用時の振動衝撃が激しいために、バッテリパック内
に余剰空間があると、内蔵電池にガタツキが生じて、リ
ード線が外れたり、電池やケースを損傷してしまうおそ
れがある。このため、この余剰空間を埋めるためのスペ
−サが必要とされている。FIG. 1 shows a front view of the electric power tool.
Reference numeral 1 denotes a power tool body, and a battery pack 3 is attached to a handle portion 2 of the power tool 1. The battery pack 3 has a covering portion 4 inserted into the inside of the handle portion 2 and an exposing portion 5 forming an external shape together with the electric power tool 1. As described above, the battery pack is required to have a voltage and capacity required by the electric device, and at the same time, to have a shape that matches the shape of the electric device to be used. For this reason, it is difficult to form the shape of the battery pack into a shape corresponding to the number of batteries to be stored, and an extra space that cannot be filled with the batteries is formed in the internal space. In particular, since the power tool is subject to severe vibration and shock during use, if there is an extra space in the battery pack, the built-in battery may rattle, and the lead wire may come off or the battery or case may be damaged. . Therefore, a spacer is needed to fill this surplus space.
【０００５】[0005]
【発明が解決しようとする課題】しかしながら、このス
ペ−サはバッテリパックのケース内の電池とケース内壁
との間にできるだけ密着して装着しなければならない。
スペ−サと、ケースや電池との間に隙間があると、電動
工具使用時の振動によってガタツキが生じてしまうから
である。ところが、前記余剰空間に応じて隙間なくスペ
−サを成形することは非常に厳しい設計が要求されてス
ペ−サの成形が困難であるという欠点があった。However, this spacer must be mounted as close as possible between the battery in the case of the battery pack and the inner wall of the case.
This is because if there is a gap between the spacer and the case or the battery, there will be rattling due to vibration when the power tool is used. However, forming a spacer without a gap depending on the surplus space requires a very strict design, and there is a drawback in that the spacer is difficult to form.
【０００６】[0006]
【課題を解決するための手段】従って、本発明は前記課
題を解決するための手段として、バッテリパックのケー
スとスペ−サのそれぞれに、互いに嵌合するリブ及びリ
ブ受け溝を形成する。Therefore, according to the present invention, as means for solving the above-mentioned problems, a rib and a rib receiving groove which are fitted to each other are formed in each of the case and the spacer of the battery pack.
【０００７】また、前記リブとリブ受け溝を、それぞれ
互いに格子状に形成する。Further, the ribs and the rib receiving grooves are formed in a grid pattern with each other.
【０００８】[0008]
【作用】本発明によれば、前記リブとリブ受け溝とによ
って、ケースとスペ−サとをガタツキなく嵌合させるこ
とができるので、電動工具の使用時に振動によって電池
やケースに損傷を与えることがなく、またリード線のハ
ンダやリード板の溶接が外れる心配がなくなる。According to the present invention, the rib and the rib receiving groove allow the case and the spacer to be fitted to each other without rattling, so that the battery and the case are damaged by vibration when the power tool is used. Also, there is no need to worry that the lead wire solder or the lead plate welding will come off.
【０００９】[0009]
【実施例】以下本発明の実施例を図面に基づいて説明す
る。図２及び図３はいずれも電動工具に使用されるバッ
テリパックを示している。このバッテリパック３は、２
分割のケース６及び７によって外郭が構成され、図１に
示すバッテリパックと同様に、電動工具の取っ手部に挿
入されて装着されるものであり、被覆部４と露呈部５と
より構成されている。また、被覆部４の上端には電力取
り出し用の接点８と、内蔵するニッケル−カドミウム電
池１０の充電時の温度上昇を検出する温度検出端子９が
設けられている。Embodiments of the present invention will be described below with reference to the drawings. 2 and 3 each show a battery pack used for an electric power tool. This battery pack 3 has 2
An outer shell is constituted by the divided cases 6 and 7, and is inserted and mounted in the handle portion of the electric tool, like the battery pack shown in FIG. 1, and is constituted by the covering portion 4 and the exposing portion 5. There is. Further, a contact 8 for extracting electric power and a temperature detection terminal 9 for detecting a temperature rise at the time of charging the built-in nickel-cadmium battery 10 are provided on the upper end of the covering portion 4.
【００１０】なお、このバッテリパック３に内蔵されて
いるニッケル−カドミウム電池１０は、バッテリパック
３のケース６及び７の形状に合わせて、階段状に配置さ
れて、リード板を各電池の端子にスポット溶接すること
によって全て直列に接続されている。また、電池の近傍
には前記温度検出端子９に接続された温度検出素子１１
が配置され、充電時、電池温度を検出することによって
満充電を判定し、充電を終了して過充電を防止する。The nickel-cadmium battery 10 built in the battery pack 3 is arranged in a stepwise manner according to the shapes of the cases 6 and 7 of the battery pack 3, and the lead plates are connected to the terminals of each battery. All are connected in series by spot welding. Further, a temperature detecting element 11 connected to the temperature detecting terminal 9 is provided near the battery.
Is disposed, and when charging, the battery temperature is detected to determine full charge, and charging is terminated to prevent overcharging.
【００１１】さて、１２はスペ−サであり、電池１０と
ともにバッテリパック内に収納されている。電池１０と
スペ−サ１２とによってバッテリパック３の内部空間が
埋め尽くされている。バッテリパックのケース７には、
スペ−サ１２が配置される位置に格子状のリブ１３が立
てられている。一方、スペ−サ１２にはこのリブ１３に
対応するリブ受け溝１４が設けられている。従って、ス
ペ−サ１２をケース７の所定の位置に配置すると、リブ
１３とリブ受け溝１４とが互いに嵌合し合って、ケース
７とスペ−サ１２とがガタツキなく固定される。また、
このとき、スペ−サ１２の側面や上面が電池１０と隙間
なく密着して電池１０を押さえる。従って、このバッテ
リパック３の内部空間には、ケースや電池やスペ−サが
ガタツキなく収納されて、電動工具使用時の振動に対し
ても、ガタツキによって、電池やケースが損傷すること
はなく、また、リード板のスポット溶接が外れてしまう
といった不具合がなくなる。Reference numeral 12 is a spacer, which is housed in the battery pack together with the battery 10. The internal space of the battery pack 3 is filled with the battery 10 and the spacer 12. In the case 7 of the battery pack,
Lattice-shaped ribs 13 are erected at the positions where the spacers 12 are arranged. On the other hand, the spacer 12 is provided with a rib receiving groove 14 corresponding to the rib 13. Therefore, when the spacer 12 is arranged at a predetermined position of the case 7, the rib 13 and the rib receiving groove 14 are fitted to each other, and the case 7 and the spacer 12 are fixed without rattling. Also,
At this time, the side surface and the upper surface of the spacer 12 are in close contact with the battery 10 without a gap to press the battery 10. Therefore, in the internal space of the battery pack 3, the case, the battery and the spacer are housed without rattling, and the battery and the case are not damaged by the rattling even when the power tool is used. Further, the problem that the spot welding of the lead plate comes off is eliminated.
【００１２】なお、この実施例においては、ケース７に
リブ１３を設け、スペ−サ１２にリブ受け溝１４を設け
ているが、これによらず、ケースにリブ受け溝を設け、
スペ−サにリブを設けても構わない。In this embodiment, the case 7 is provided with the rib 13 and the spacer 12 is provided with the rib receiving groove 14. However, the rib receiving groove is provided in the case irrespective of this.
A rib may be provided on the spacer.
【００１３】[0013]
【発明の効果】本発明によれば、前記リブとリブ受け溝
とによって、ケースとスペ−サとをガタツキなく嵌合さ
せることができるので、電動工具の使用時に振動によっ
て電池やケースに損傷を与えることがなく、またリード
線のハンダやリード板の溶接が外れる心配がなくなる。According to the present invention, the rib and the rib receiving groove allow the case and the spacer to be fitted to each other without rattling, so that the battery and the case are not damaged by vibration when the power tool is used. There is no need to give it, and there is no risk of the lead wire soldering or the lead plate welding coming off.
【００１４】また、リブ及びリブ受け溝をそれぞれ互い
に格子状にすることによって、より一層両者の嵌合状態
を良好にすることができる。Further, by forming the ribs and the rib receiving grooves in a grid pattern with each other, the fitted state of the two can be further improved.
【図１】電動工具とバッテリパックの正面図FIG. 1 is a front view of an electric tool and a battery pack.
【図２】バッテリパックの斜視図FIG. 2 is a perspective view of a battery pack.
【図３】バッテリパックの要部分解斜視図FIG. 3 is an exploded perspective view of essential parts of the battery pack.
１ 電動工具 ２ 取っ手部 ３
バッテリパック ４ 被覆部 ５ 露呈部 ６
ケース ７ ケース ８ 接点 ９
温度検出端子 １０ ニッケル−カドミウム電池 １１
温度検出素子 １２ スペ−サ １３ リブ １４
リブ受け溝1 Power tool 2 Handle part 3
Battery pack 4 Cover part 5 Exposed part 6
Case 7 Case 8 Contact 9
Temperature detection terminal 10 Nickel-cadmium battery 11
Temperature detecting element 12 Spacer 13 Rib 14
Rib receiving groove
Claims (2)
ス内に収納される電池と、ケース内の余剰スペースに合
わせて成形されて、前記電池とともにケース内の空間を
埋めるスペ−サとより構成されるバッテリパックにおい
て、前記ケースとスペ−サとは、互いの接合面に形成さ
れたリブとリブ受け溝とによって嵌合してなることを特
徴とするバッテリパック。1. A case which is divided into at least two parts, a battery housed in the case, and a spacer which is molded to fit an extra space in the case and fills the space in the case together with the battery. The battery pack according to claim 1, wherein the case and the spacer are fitted by a rib and a rib receiving groove formed on a joint surface of each other.
に格子状に形成されていることを特徴とする請求項１記
載のバッテリパック。2. The battery pack according to claim 1, wherein the ribs and the rib receiving grooves are formed in a grid pattern with each other.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP06957794A JP3286460B2 (en) | 1994-04-07 | 1994-04-07 | Battery pack |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP06957794A JP3286460B2 (en) | 1994-04-07 | 1994-04-07 | Battery pack |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH07282789A true JPH07282789A (en) | 1995-10-27 |
| JP3286460B2 JP3286460B2 (en) | 2002-05-27 |
Family
ID=13406798
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP06957794A Expired - Lifetime JP3286460B2 (en) | 1994-04-07 | 1994-04-07 | Battery pack |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3286460B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09155769A (en) * | 1995-12-13 | 1997-06-17 | Makita Corp | Battery mounting structure for power tool |
-
1994
- 1994-04-07 JP JP06957794A patent/JP3286460B2/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09155769A (en) * | 1995-12-13 | 1997-06-17 | Makita Corp | Battery mounting structure for power tool |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3286460B2 (en) | 2002-05-27 |
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