JPS5975731U

JPS5975731U - automatic charging device

Info

Publication number: JPS5975731U
Application number: JP17115882U
Authority: JP
Inventors: 堀江　正雄; 小山　米寿; 繁野　雅信
Original assignee: 松下電器産業株式会社
Priority date: 1982-11-11
Filing date: 1982-11-11
Publication date: 1984-05-23

Abstract

(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Brief explanation of the drawing]

第１図は従来の自動充電装置の電気回路図、第２図は同
充電装置の充電特性図、第３図は本考案の一実施例を示
す自動充電装置の電気回路図、第４図は同充電装置の充
電特性図、第５図および６図は本考案のその他の実施例
を示す部分回路図である。１・・・電源整流回路、２・・・電圧検出回路、Ｂ・・
・二茨電池、Ｑ２・・・電界効果トランジスタ、Ｑ３・
・・トランジスタ、Ｑｌ・・・主トランジスタ、Ｄ□、
　Ｄ２．　Ｄ４゜Ｄ５．Ｄ７・・・ダイオード、Ｄ３．
Ｄ６・・・定電圧ダイオード、Ｃ・・・コンデンサ、Ｒ
□、　Ｒ３，Ｒ，、Ｒ５・・・抵抗。Fig. 1 is an electric circuit diagram of a conventional automatic charging device, Fig. 2 is a charging characteristics diagram of the same charging device, Fig. 3 is an electric circuit diagram of an automatic charging device showing an embodiment of the present invention, and Fig. 4 is Charging characteristic diagrams of the charging device, FIGS. 5 and 6 are partial circuit diagrams showing other embodiments of the present invention. 1...Power rectifier circuit, 2...Voltage detection circuit, B...
・Nibara battery, Q2...Field effect transistor, Q3・
...Transistor, Ql...Main transistor, D□,
D2. D4゜D5. D7...Diode, D3.
D6... Constant voltage diode, C... Capacitor, R
□, R3, R,, R5...Resistance.

Claims

[Scope of utility model registration request]

(1) A main circuit consisting of a main transistor connected in series with a secondary battery to be charged across a power rectifier circuit that rectifies and smoothes a commercial AC power supply, and a voltage detection circuit that detects the voltage of the secondary battery. The output terminal of the voltage detection circuit is connected to the positive side of the power rectifier circuit via a resistor, and one end of a parallel circuit of a capacitor and a resistor is connected via a diode from the connection point of the resistor and the output terminal. , and the other end of this parallel circuit is connected to the negative side of the power supply rectifier circuit, and further the electric charge of the charged capacitor is discharged by the output signal of the voltage detection circuit, and the capacitor is operated proportionally by the terminal voltage of this capacitor. The automatic charging device is equipped with a drive circuit that controls the main transistor to gradually reduce the charging current to a minute current or less, and a constant voltage diode that charges the capacitor at a constant voltage regardless of fluctuations in the power supply voltage. .

(2) The voltage regulator diode is a practical utility model registration claim, in which the cathode is connected to the connection point between the output terminal of the voltage detection circuit and the resistor, and the anode is connected to the other end of the parallel circuit of the capacitor and the resistor. The single-motion charging device according to item 1.