JPH0429528A - Dc power supply - Google Patents
Dc power supplyInfo
- Publication number
- JPH0429528A JPH0429528A JP2135759A JP13575990A JPH0429528A JP H0429528 A JPH0429528 A JP H0429528A JP 2135759 A JP2135759 A JP 2135759A JP 13575990 A JP13575990 A JP 13575990A JP H0429528 A JPH0429528 A JP H0429528A
- Authority
- JP
- Japan
- Prior art keywords
- battery
- discharge
- high current
- batteries
- nickel
- 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.)
- Pending
Links
- 239000003990 capacitor Substances 0.000 claims abstract description 7
- 238000007599 discharging Methods 0.000 claims description 5
- 229910052739 hydrogen Inorganic materials 0.000 abstract description 2
- 239000001257 hydrogen Substances 0.000 abstract description 2
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 abstract 4
- 229910052759 nickel Inorganic materials 0.000 abstract 2
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 abstract 1
- 229910052793 cadmium Inorganic materials 0.000 abstract 1
- BDOSMKKIYDKNTQ-UHFFFAOYSA-N cadmium atom Chemical compound [Cd] BDOSMKKIYDKNTQ-UHFFFAOYSA-N 0.000 abstract 1
- OJIJEKBXJYRIBZ-UHFFFAOYSA-N cadmium nickel Chemical compound [Ni].[Cd] OJIJEKBXJYRIBZ-UHFFFAOYSA-N 0.000 description 5
- 229910052987 metal hydride Inorganic materials 0.000 description 2
Landscapes
- Direct Current Feeding And Distribution (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
Description
【発明の詳細な説明】
［発明の利用分野］
［発明の背景コ
従来、コードレス工具等にはニッケル・カドミウム電池
のように大電流充放電が可能な電池を使用しているが、
容量が小さいため実使用時間が短いという問題があった
。一方、容量が大きい電池としてニッケル・水素電池が
あるが、大電流充放電が不可能なためコードレス工具等
に使用することが出来ない。なお、大電流充放電が可能
な電池として電気二重層コンデンサの原理を利用した電
池があるが、ニッケル・カドミウム電池よりさらに容量
が小さい。また、大電流充放電が可能なものとしてコン
デンサがあるが、これも容量が小さい。[Detailed Description of the Invention] [Field of Application of the Invention] [Background of the Invention] Conventionally, cordless tools and the like have used batteries capable of charging and discharging large currents, such as nickel-cadmium batteries.
There was a problem that the actual usage time was short due to the small capacity. On the other hand, there are nickel-metal hydride batteries that have a large capacity, but they cannot be used in cordless tools and the like because they cannot be charged and discharged with large currents. Note that there is a battery that uses the principle of an electric double layer capacitor as a battery capable of charging and discharging large currents, but its capacity is even smaller than that of a nickel-cadmium battery. Additionally, capacitors are capable of charging and discharging large currents, but these also have small capacities.
［発明の目的コ
本発明の目的は、上記した従来技術の欠点をなくすこと
にある。[Object of the Invention] An object of the present invention is to eliminate the above-mentioned drawbacks of the prior art.
［発明の概要］
本発明は、大電流充放電が不可能だが容量が大きい電池
と、大電流充放電が可能だが容量が小さい電池またはコ
ンデンサを並列に接続して使用することにより、大電流
充放電が可能で容量が大きい電池として使用出来るよう
にしたことにある。[Summary of the Invention] The present invention enables high current charging by connecting in parallel a battery that cannot be charged and discharged with a large current but has a large capacity, and a battery or capacitor that can be charged and discharged with a large current but has a small capacity. The reason is that it can be used as a battery that can be discharged and has a large capacity.
［発明の実施例〕
第１図は本発明の一実施例である。図において、１はニ
ッケル・水素電池のように大電流充放電が不可能だが容
量が大きい電池、２はニッケル・カドミウム電池または
電気二重層コンデンサの原理を利用した電池のように、
大電流充放電が可能だが容量が小さい電池である。なお
、ニッケル・水素電池とニッケルカドミウム電池は１．
２Ｖ／セルである。３はコードレス工具等からなる負荷
である。４はスイッチである。[Embodiment of the Invention] FIG. 1 shows an embodiment of the present invention. In the figure, 1 is a battery like a nickel-metal hydride battery that cannot be charged or discharged at a large current but has a large capacity, and 2 is a nickel-cadmium battery or a battery that uses the principle of an electric double layer capacitor.
This battery is capable of charging and discharging large currents, but has a small capacity. In addition, nickel-hydrogen batteries and nickel-cadmium batteries are 1.
2V/cell. 3 is a load consisting of cordless tools and the like. 4 is a switch.
コートレス工具には穴明けを行うドリル、ネジ締めを行
うドライバ及びインパクトレンチ等がある。これらのコ
ードレス工具は短時間に作業をし、休止するという繰返
しを行っている。このためスイッチ４のオン時において
、軽負荷時は電池１と電池２から給電が行われ、重負荷
時は主に電池２からの大電流放電による給電が行われる
。一方、スイッチ４のオフ時において、電池１から電池
２充電が行われるという動作が繰り返される。負荷３か
ら見れば、電池１．２は大電流・高容量電池となる。Cordless tools include drills for making holes, drivers for tightening screws, and impact wrenches. These cordless tools work repeatedly for short periods of time and then stop for short periods of time. Therefore, when the switch 4 is turned on, power is supplied from batteries 1 and 2 during light loads, and power is supplied mainly by large current discharge from battery 2 during heavy loads. On the other hand, when the switch 4 is off, the operation of charging the battery 1 to the battery 2 is repeated. From the perspective of the load 3, the battery 1.2 is a large current/high capacity battery.
第２図は本発明の他の実施例で、複数本の同種電池を直
列に接続した例である。図において、１’、１’は電池
１と同じ電池、２′２′は電池２と同じ電池である。機
能としては、第１図の電池と同じである。FIG. 2 shows another embodiment of the present invention, in which a plurality of batteries of the same type are connected in series. In the figure, 1' and 1' are the same batteries as battery 1, and 2' and 2' are the same batteries as battery 2. Its function is the same as that of the battery shown in FIG.
第３図は本発明の他の実施例である。図において、５は
電流制限のための抵抗で、内部抵抗が小さい電池１．２
の電池電圧にバラツキがあった場合、電圧のバランスを
とるために大電流が流れるのでこれを抑制するものであ
る。FIG. 3 shows another embodiment of the invention. In the figure, 5 is a resistor for current limiting, and batteries 1.2 and 1.2 have low internal resistance.
If there are variations in battery voltage, a large current flows to balance the voltage, so this is suppressed.
第１図〜第３図におけるニッケル・カドミウム電池２．
２’ 、２’はコンデンサに置換しても、同様な効果を
得ることが出来る。Nickel-cadmium battery 2 in Figures 1-3.
Even if 2' and 2' are replaced with capacitors, the same effect can be obtained.
［発明の効果コ
本発明によれば、大電流放電ができ、容量が大きい電池
として使用できるので、コードレス工具の使用時間を長
く出来る。[Effects of the Invention] According to the present invention, a large current can be discharged and the battery can be used as a large capacity battery, so that the usage time of a cordless tool can be extended.
図において、１．１′ １′は大電流充放電が不可能で
容量が大きい電池で、２．２’２“は大電流充放電が可
能で容量が小さい電池で、５は抵抗である。In the figure, 1.1'1' is a battery with a large capacity that cannot be charged and discharged with a large current, 2.2'2'' is a battery that can be charged and discharged with a large current and has a small capacity, and 5 is a resistor.
特許出願人の名称 日立工機株式会社 才１ 図 プ′ｚｉ２１１ 才３図Patent applicant name: Hitachi Koki Co., Ltd. talent 1 figure Pu'zi211 3rd figure
Claims (1)
電流充放電が可能だが容量が小さい電池を並列に接続し
て使用することを特徴とした直流電源装置。 ２ 大電流充放電が不可能だが容量が大きい電池と、大
電流充放電が可能だが容量が小さいコンデンサを並列に
接続して使用することを特徴とした直流電源装置。[Claims] 2. Claim 1 A battery that cannot be charged and discharged with a large current but has a large capacity and a battery that can be charged and discharged with a large current but has a small capacity are connected in parallel and used. DC power supply. 2. A DC power supply device characterized by the use of a battery that cannot be charged and discharged with a large current but has a large capacity, and a capacitor that is capable of charging and discharging a large current but has a small capacity connected in parallel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2135759A JPH0429528A (en) | 1990-05-25 | 1990-05-25 | Dc power supply |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2135759A JPH0429528A (en) | 1990-05-25 | 1990-05-25 | Dc power supply |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0429528A true JPH0429528A (en) | 1992-01-31 |
Family
ID=15159198
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2135759A Pending JPH0429528A (en) | 1990-05-25 | 1990-05-25 | Dc power supply |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0429528A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2012132525A1 (en) * | 2011-03-25 | 2012-10-04 | 三洋電機株式会社 | Pack battery |
-
1990
- 1990-05-25 JP JP2135759A patent/JPH0429528A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2012132525A1 (en) * | 2011-03-25 | 2012-10-04 | 三洋電機株式会社 | Pack battery |
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