JPH0138655Y2 - - Google Patents
Info
- Publication number
- JPH0138655Y2 JPH0138655Y2 JP1979094836U JP9483679U JPH0138655Y2 JP H0138655 Y2 JPH0138655 Y2 JP H0138655Y2 JP 1979094836 U JP1979094836 U JP 1979094836U JP 9483679 U JP9483679 U JP 9483679U JP H0138655 Y2 JPH0138655 Y2 JP H0138655Y2
- Authority
- JP
- Japan
- Prior art keywords
- charging
- circuit
- capacitor
- transistor
- constant current
- 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.)
- Expired
Links
- 239000003990 capacitor Substances 0.000 claims description 14
- 238000010586 diagram Methods 0.000 description 5
- 238000000034 method Methods 0.000 description 2
- 230000003321 amplification Effects 0.000 description 1
- 238000003199 nucleic acid amplification method Methods 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
Description
【考案の詳細な説明】
本考案はフアラツド単位の静電容量を有する大
容量のコンデンサの充電回路に関する。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a charging circuit for a large capacitor having a capacitance on the order of farads.
最近、電気二重層の原理を利用した大容量コン
デンサが商品化され、繰返し充放電可能な二次電
池の如き用途にも使用されている。 Recently, large-capacity capacitors that utilize the electric double layer principle have been commercialized and are also used in applications such as secondary batteries that can be repeatedly charged and discharged.
従来の電池用充電回路は過充電防止回路等をつ
けたため複雑で高価なものになつたり、あるいは
単に過電流制限用直列抵抗を用いた簡単な方法で
は充電後期での充電電流が小さくなるので充電完
了までの時間がかかる等の欠点があつた。 Conventional battery charging circuits are complicated and expensive due to the addition of overcharging prevention circuits, or the simple method of simply using a series resistor for overcurrent limiting reduces charging current in the latter stages of charging. There were drawbacks such as the time it took to complete the process.
本考案は、上記欠点を除き、安価で急速充電が
可能な大容量コンデンサ充電回路を提供するもの
である。 The present invention provides a large-capacity capacitor charging circuit that is inexpensive and capable of rapid charging, while eliminating the above-mentioned drawbacks.
本考案を実施例により説明する。 The present invention will be explained by way of examples.
第１図は本考案の充電回路の第１の実施例の回
路図である。 FIG. 1 is a circuit diagram of a first embodiment of the charging circuit of the present invention.
ＮチヤンネルFET１及び抵抗器２により定電
流回路が構成され、NPNトランジスタ３のベー
スに接続される。NPNトランジスタ３のコレク
タに大容量コンデンサ４が接続され、直流電源５
により電流が供給される。抵抗器２の抵抗値を調
整することによつてＮチヤンネルFET１のゲー
ト・バイアスが設定され、適当な定電流回路とし
て作動する。 A constant current circuit is configured by the N-channel FET 1 and the resistor 2, and is connected to the base of the NPN transistor 3. A large capacitor 4 is connected to the collector of the NPN transistor 3, and a DC power supply 5
The current is supplied by By adjusting the resistance value of resistor 2, the gate bias of N-channel FET 1 is set, and it operates as a suitable constant current circuit.
上記充電回路において、定電流回路を1mAに
設定し、NPNトランジスタ３の直流電流増幅率
hFEを１００とすると、NPNトランジスタ３のコ
レクタ電流は100mAとなり、大容量コンデンサ
４は100mAで充電される。 In the above charging circuit, the constant current circuit is set to 1mA, and the DC current amplification factor of NPN transistor 3 is
When h FE is set to 100, the collector current of the NPN transistor 3 is 100 mA, and the large capacitor 4 is charged with 100 mA.
直流電源の電源電圧を10V、コンデンサ４の静
電容量Ｃを1F、充電回路Ｉを100mA、充電完了
時点でのNPNトランジスタ３のコレクタ飽和電
圧VCE(sat)を0.1Vとすると、充電時間Ｔは
Ｔ＝Ｃ（Ｅ−VCE（sat））／Ｉ＝99
となり99秒で9.9Vまで充電される。 Assuming that the power supply voltage of the DC power supply is 10V, the capacitance C of the capacitor 4 is 1F, the charging circuit I is 100mA, and the collector saturation voltage V CE (sat) of the NPN transistor 3 at the time of completion of charging is 0.1V, the charging time T is becomes T=C(E-V CE (sat))/I=99, and is charged to 9.9V in 99 seconds.
上記第１の実施例においては、FETを用いて
定電流回路を構成したが、別の定電流回路を用い
ることもできる。 In the first embodiment, the constant current circuit is constructed using FETs, but another constant current circuit may also be used.
第２図は本考案の充電回路の第２の実施例の回
路図である。 FIG. 2 is a circuit diagram of a second embodiment of the charging circuit of the present invention.
この回路はPNPトランジスタ６、ツエナー・
ダイオード７及び抵抗器２ａ，２ｂによつて定電
流回路を構成したものである。 This circuit consists of 6 PNP transistors, a Zener
A constant current circuit is constructed by a diode 7 and resistors 2a and 2b.
本実施例ではPNPトランジスタのhFEのばらつ
きに殆んど関係なくツエナー・ダイオードのツエ
ナー電圧及びエミツタ側の抵抗器２ａの値によつ
て定電流回路の電流値を決めることができるので
調整が不要であるという利点がある。 In this example, the current value of the constant current circuit can be determined by the Zener voltage of the Zener diode and the value of the resistor 2a on the emitter side, almost regardless of the variation in h FE of the PNP transistor, so no adjustment is necessary. It has the advantage of being
上記二つの実施例はコンデンサ充電の制御トラ
ンジスタとしてNPNトランジスタ３を用いたが
NPNトランジスタに限定されることはなく、
PNPトランジスタを用いても良く、またダーリ
ントン接続した等価的トランジスタを用いること
もできる。更にまた、抵抗器は固定抵抗器、半固
定抵抗器、可変抵抗器のいずれでも良く、またこ
れらの組合せを用いても良い。 In the above two embodiments, NPN transistor 3 was used as the control transistor for capacitor charging.
Not limited to NPN transistors,
PNP transistors may be used, or equivalent transistors connected to Darlington may also be used. Furthermore, the resistor may be a fixed resistor, a semi-fixed resistor, or a variable resistor, or a combination thereof may be used.
本考案によれば充電用コンデンサと直列に接続
されたトランジスタのベースを定電流によつて駆
動しているので、第３図に示すように従来の単に
過電流制限用直列抵抗だけを用いたもの（点線）
に比べて高速充電ができる。従来は充電後期で充
電電流が小さくなるので充電完了までの時間が長
かつた。 According to the present invention, the base of the transistor connected in series with the charging capacitor is driven by a constant current, so as shown in Fig. 3, it is possible to drive the base of the transistor connected in series with the charging capacitor. (dotted line)
Can charge faster than. Conventionally, since the charging current becomes small in the latter stages of charging, it takes a long time to complete charging.
以上詳細に説明したように、本考案によれば、
回路構成が簡単なので安価であり、しかも急速充
電を行うことができるコンデンサ充電回路を得る
ことができるので、当該分野における効果は極め
て大きい。 As explained in detail above, according to the present invention,
Since the circuit configuration is simple, it is possible to obtain a capacitor charging circuit that is inexpensive and can perform rapid charging, so the effects in this field are extremely large.
第１図は本考案の充電回路の第１の実施例の回
路図、第２図は充電回路の第２の実施例の回路
図、である。さらに、第３図は本考案と従来との
充電特性を示す図である。
１……ＮチヤンネルFET、２，２ａ，２ｂ，
２ｃ……抵抗器、３……NPNトランジスタ、４
……大容量コンデンサ、５……直流電源、６……
NPNトランジスタ、７……ツエナーダイオード。
FIG. 1 is a circuit diagram of a first embodiment of the charging circuit of the present invention, and FIG. 2 is a circuit diagram of a second embodiment of the charging circuit. Furthermore, FIG. 3 is a diagram showing the charging characteristics of the present invention and the conventional one. 1...N channel FET, 2, 2a, 2b,
2c...Resistor, 3...NPN transistor, 4
...Large capacity capacitor, 5...DC power supply, 6...
NPN transistor, 7... Zener diode.
Claims (1)
一端に接続し、他端を直流電源の一端に直接接続
し、該直流電源の他端を前記コンデンサの他端に
接続するとともに、前記トランジスタのベース端
と前記直流電源の前記他端との間に定電流回路を
接続したことを特徴とするコンデンサ充電回路。 One end of the transistor is connected to one end of the capacitor to be charged, the other end is directly connected to one end of a DC power source, the other end of the DC power source is connected to the other end of the capacitor, and the base end of the transistor and the A capacitor charging circuit characterized in that a constant current circuit is connected between the other end of the DC power supply.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1979094836U JPH0138655Y2 (en) | 1979-07-10 | 1979-07-10 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1979094836U JPH0138655Y2 (en) | 1979-07-10 | 1979-07-10 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5612212U JPS5612212U (en) | 1981-02-02 |
| JPH0138655Y2 true JPH0138655Y2 (en) | 1989-11-20 |
Family
ID=29327708
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1979094836U Expired JPH0138655Y2 (en) | 1979-07-10 | 1979-07-10 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0138655Y2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20040009380A1 (en) * | 2002-05-16 | 2004-01-15 | Ballard Power Systems Inc. | Adjustable array of fuel cell systems |
-
1979
- 1979-07-10 JP JP1979094836U patent/JPH0138655Y2/ja not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5612212U (en) | 1981-02-02 |
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