JPS57141570A - Display device for charging and discharging quantity of accumulator - Google Patents
Display device for charging and discharging quantity of accumulatorInfo
- Publication number
- JPS57141570A JPS57141570A JP56027443A JP2744381A JPS57141570A JP S57141570 A JPS57141570 A JP S57141570A JP 56027443 A JP56027443 A JP 56027443A JP 2744381 A JP2744381 A JP 2744381A JP S57141570 A JPS57141570 A JP S57141570A
- Authority
- JP
- Japan
- Prior art keywords
- circuit
- charging
- accumulator
- discharging
- pulse signal
- 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
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/36—Arrangements for testing, measuring or monitoring the electrical condition of accumulators or electric batteries, e.g. capacity or state of charge [SoC]
- G01R31/382—Arrangements for monitoring battery or accumulator variables, e.g. SoC
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Tests Of Electric Status Of Batteries (AREA)
- Secondary Cells (AREA)
Abstract
PURPOSE:To know the charging/discharging state accurately by counting the charging/discharging current of an accumulator in the form of the pulse signal, and displaying the charging/discharging electric quantity of the accumulator in percent against the nominal capacitance and according to the counting state of the above mentioned pulse signal. CONSTITUTION:When the charging starts for an accumulator 1, the charging current is detected by a microresistor 2 in the form of voltage and converted by a voltage-frequency converting circuit 3 into the pulse signal having the frequency proportional to the detected voltage. This pulse signal is counted by a counting circuit 5 to be stored. In this case, the direction of the current is discriminated by a charging/discharging discriminating circuit 4 with an additional counting instruction, and the count value of the circuit 5 is converted into the electric signal and displayed by a display circuit 6. In this case, the size of the resistor 2, the converting factor of the circuit 3 and the count value of the circuit 5 are set respectively so as to indicate the display of the circuit 6 100% when the nominal capacitance of the accumulator 1 is charged.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP56027443A JPS57141570A (en) | 1981-02-26 | 1981-02-26 | Display device for charging and discharging quantity of accumulator |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP56027443A JPS57141570A (en) | 1981-02-26 | 1981-02-26 | Display device for charging and discharging quantity of accumulator |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS57141570A true JPS57141570A (en) | 1982-09-01 |
Family
ID=12221249
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP56027443A Pending JPS57141570A (en) | 1981-02-26 | 1981-02-26 | Display device for charging and discharging quantity of accumulator |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS57141570A (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS61142480A (en) * | 1984-12-14 | 1986-06-30 | Matsuda Kiden Kk | Discharge detector for battery |
JPS61144745U (en) * | 1985-02-26 | 1986-09-06 | ||
JPS646574U (en) * | 1987-06-30 | 1989-01-13 |
-
1981
- 1981-02-26 JP JP56027443A patent/JPS57141570A/en active Pending
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS61142480A (en) * | 1984-12-14 | 1986-06-30 | Matsuda Kiden Kk | Discharge detector for battery |
JPS61144745U (en) * | 1985-02-26 | 1986-09-06 | ||
JPS646574U (en) * | 1987-06-30 | 1989-01-13 |
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