JPS57163879A - Detector for decrease in capacity of storage battery - Google Patents
Detector for decrease in capacity of storage batteryInfo
- Publication number
- JPS57163879A JPS57163879A JP56049652A JP4965281A JPS57163879A JP S57163879 A JPS57163879 A JP S57163879A JP 56049652 A JP56049652 A JP 56049652A JP 4965281 A JP4965281 A JP 4965281A JP S57163879 A JPS57163879 A JP S57163879A
- Authority
- JP
- Japan
- Prior art keywords
- voltage
- capacity
- storage battery
- battery
- electromotive force
- 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
- G01R19/00—Arrangements for measuring currents or voltages or for indicating presence or sign thereof
- G01R19/165—Indicating that current or voltage is either above or below a predetermined value or within or outside a predetermined range of values
- G01R19/16533—Indicating that current or voltage is either above or below a predetermined value or within or outside a predetermined range of values characterised by the application
- G01R19/16538—Indicating that current or voltage is either above or below a predetermined value or within or outside a predetermined range of values characterised by the application in AC or DC supplies
- G01R19/16542—Indicating that current or voltage is either above or below a predetermined value or within or outside a predetermined range of values characterised by the application in AC or DC supplies for batteries
-
- 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]
- G01R31/3644—Constructional arrangements
- G01R31/3646—Constructional arrangements for indicating electrical conditions or variables, e.g. visual or audible indicators
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Measurement Of Current Or Voltage (AREA)
- Tests Of Electric Status Of Batteries (AREA)
Abstract
PURPOSE:To turn on a pilot lamp by detecting an electromotive force, which varies proportionally with the specific gravity (capacity) of an electrolyte, dropping to the extent that it is judged there is not capacity when a battery is unloaded, or a discharging voltage droppint down to the minimum voltage of load operation when loaded. CONSTITUTION:In case of a car storage battery, when its electromotive force drops to 12V (electrolyte specific gravity; 1.160), an engine becomes difficult to start. When a voltage during discharge drops to about 7V, the engine also becomes hard to start. Therefore, when a constant voltage element of 11V is employed, the 12V electromotive force of the unloaded storage battery develops a 1V voltage between points A and B, and between points and B and C voltage is set to the 0.6V forward drop of a transistor, etc., in an amplifying circuit 8, so that a pilot lamp 9 turns on and off at 12V. Consequently, a decrease in the capacity of the storage battery is detected without reference to whether the battery is loaded or not, knowing the degree of the life of the battery from the lighting state of the lamp.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP56049652A JPS57163879A (en) | 1981-04-01 | 1981-04-01 | Detector for decrease in capacity of storage battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP56049652A JPS57163879A (en) | 1981-04-01 | 1981-04-01 | Detector for decrease in capacity of storage battery |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS57163879A true JPS57163879A (en) | 1982-10-08 |
Family
ID=12837118
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP56049652A Pending JPS57163879A (en) | 1981-04-01 | 1981-04-01 | Detector for decrease in capacity of storage battery |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS57163879A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6035760A (en) * | 1983-08-06 | 1985-02-23 | Ricoh Co Ltd | Control device for electrostatically charged potential of photosensitive body |
| JPS6055362A (en) * | 1983-09-07 | 1985-03-30 | Ricoh Co Ltd | Controller for electrostatic charging potential of photosensitive body |
| JPS60225864A (en) * | 1984-04-25 | 1985-11-11 | Ricoh Co Ltd | Measuring device for surface potential of photosensitive body |
-
1981
- 1981-04-01 JP JP56049652A patent/JPS57163879A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6035760A (en) * | 1983-08-06 | 1985-02-23 | Ricoh Co Ltd | Control device for electrostatically charged potential of photosensitive body |
| JPS6055362A (en) * | 1983-09-07 | 1985-03-30 | Ricoh Co Ltd | Controller for electrostatic charging potential of photosensitive body |
| JPS60225864A (en) * | 1984-04-25 | 1985-11-11 | Ricoh Co Ltd | Measuring device for surface potential of photosensitive body |
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