JPS57133370A - Detecting device for specific gravity of electrolytic solution of accumulator or capacity thereof - Google Patents
Detecting device for specific gravity of electrolytic solution of accumulator or capacity thereofInfo
- Publication number
- JPS57133370A JPS57133370A JP56018656A JP1865681A JPS57133370A JP S57133370 A JPS57133370 A JP S57133370A JP 56018656 A JP56018656 A JP 56018656A JP 1865681 A JP1865681 A JP 1865681A JP S57133370 A JPS57133370 A JP S57133370A
- Authority
- JP
- Japan
- Prior art keywords
- specific gravity
- voltage
- electrolytic solution
- accumulator
- capacity
- 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
-
- 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
- G01R31/3835—Arrangements for monitoring battery or accumulator variables, e.g. SoC involving only voltage measurements
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Tests Of Electric Status Of Batteries (AREA)
Abstract
PURPOSE:To detect the specific gravity of the electrolytic solution or the capacity of the accumulator found from the specific gravity by substracting from the reference voltage the voltage of the accumulator or the charged voltage thereof while it is charged with a very small current and by magnifying in display a change thus found. CONSTITUTION:When electrodes 1 and 2 are inserted into the electrolytic solution 9 of a prescribed single cell 8 and are charged by a DC power source 3, an inter-electrode voltage rises and becomes stable. Assuming that the inter-electrode voltage at the time when the value of the specific gravity of the electrolytic solution 9 is a normal value of the specific gravity be the voltage of a reference voltage device 5, the both-end voltage of a resistor 6 turns to be OV at the time of the normal value of the specific gravity. When the specific gravity of the electrolytic solution of the accumulator to be measured lowers through discharge, the voltage between the electrodes 1 and 2 changes and a voltage proportional to the amount of lowering of the value of the specific gravity appears at both ends of the resistor 6. By detecting said voltage by a milli voltmeter 7 and by graduating the scale of the milli voltmeter 7 with the specific value based on a conversion of 1mV=0.001, the lowered value of the specific gravity can be read out directly therefrom. In addition, it is also possible the relation between the specific gravity and the capacity known by actual measurement is indicated by the capacity.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP56018656A JPS57133370A (en) | 1981-02-10 | 1981-02-10 | Detecting device for specific gravity of electrolytic solution of accumulator or capacity thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP56018656A JPS57133370A (en) | 1981-02-10 | 1981-02-10 | Detecting device for specific gravity of electrolytic solution of accumulator or capacity thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS57133370A true JPS57133370A (en) | 1982-08-18 |
Family
ID=11977656
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP56018656A Pending JPS57133370A (en) | 1981-02-10 | 1981-02-10 | Detecting device for specific gravity of electrolytic solution of accumulator or capacity thereof |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS57133370A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5045163A (en) * | 1986-02-20 | 1991-09-03 | Raychem Corporation | Electrochemical method for measuring chemical species employing ion exchange material |
| US5049247A (en) * | 1986-02-20 | 1991-09-17 | Raychem Corporation | Method for detecting and locating an electrolyte |
| US5074988A (en) * | 1986-02-20 | 1991-12-24 | Raychem Corporation | Apparatus for monitoring an electrolyte |
-
1981
- 1981-02-10 JP JP56018656A patent/JPS57133370A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5045163A (en) * | 1986-02-20 | 1991-09-03 | Raychem Corporation | Electrochemical method for measuring chemical species employing ion exchange material |
| US5049247A (en) * | 1986-02-20 | 1991-09-17 | Raychem Corporation | Method for detecting and locating an electrolyte |
| US5074988A (en) * | 1986-02-20 | 1991-12-24 | Raychem Corporation | Apparatus for monitoring an electrolyte |
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