JPS63122826U

JPS63122826U -

Info

Publication number: JPS63122826U
Application number: JP1197387U
Authority: JP
Priority date: 1987-01-28
Filing date: 1987-01-28
Publication date: 1988-08-10

Description

[Brief explanation of the drawing]

第１図は本考案による装置の回路図、第２図は
動作フローチヤート図、第３図は従来の装置の回
路図。１……ＤＣ電源部、３……バツテリ、４……記
憶素子部、５……バツテリ電圧検出部、７……マ
イクロコンピユータ部、８……バツテリ充電制御
部。 FIG. 1 is a circuit diagram of a device according to the present invention, FIG. 2 is an operation flowchart, and FIG. 3 is a circuit diagram of a conventional device. DESCRIPTION OF SYMBOLS 1... DC power supply part, 3... Battery, 4... Memory element part, 5... Battery voltage detection part, 7... Microcomputer part, 8... Battery charge control part.

Claims

[Scope of utility model registration request]

A rechargeable battery 3 that supplies electricity to the memory element section 4 when the power is turned off, a battery voltage detection section 5 that detects whether the voltage of the battery 3 is equal to or higher than a predetermined value, and an output of the battery voltage detection section 5. A microcomputer section 7 that inputs signals and performs various calculations and controls; a battery charging control section 8 that controls charging of the battery 3 on and off based on output signals of the microcomputer section 7; DC power supply section 1 that supplies
The microcomputer section 7 started after the power is turned on checks the voltage of the battery 3, and if it is above a predetermined value, it is determined that the data is normally held in the memory element section 4, and the predetermined value is determined. In the following cases, it is assumed that the stored data has been lost, and appropriate controls are taken according to each case.
A battery backup device characterized in that, after the above determination, a charge ON signal for the battery 3 is output to the battery charge control section 8 to start charging the battery.