JPS56126773A - Detecting method for capacity of battery for automobile - Google Patents
Detecting method for capacity of battery for automobileInfo
- Publication number
- JPS56126773A JPS56126773A JP2922280A JP2922280A JPS56126773A JP S56126773 A JPS56126773 A JP S56126773A JP 2922280 A JP2922280 A JP 2922280A JP 2922280 A JP2922280 A JP 2922280A JP S56126773 A JPS56126773 A JP S56126773A
- Authority
- JP
- Japan
- Prior art keywords
- battery
- time
- circuit
- current
- 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.)
- Granted
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]
- G01R31/3644—Constructional arrangements
- G01R31/3648—Constructional arrangements comprising digital calculation means, e.g. for performing an algorithm
-
- 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
- G01R31/3842—Arrangements for monitoring battery or accumulator variables, e.g. SoC combining voltage and current measurements
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Tests Of Electric Status Of Batteries (AREA)
- Secondary Cells (AREA)
Abstract
PURPOSE:To enable detection of capacity with high precision even during operation by calculating dead short current at the time of short-circuit from discharge current at the points of time in plural and from battery-terminal voltage and by determining the capacity by using a prescribed function found beforehand. CONSTITUTION:The maximum current I1 at the time of starting by cranking and the battery- terminal voltage V1 at the same point of time are detected, respectively, by a detecting circuit 10 for discharge current IB, a detecting circuit 14 for the minimum current flowing between the starting and the 180-degree rotation of a crank shaft, a detecting circuit 12 for the battery-terminal voltage VB and a V1 detecting circuit 16. In the case of four-cylinder system or the like, the current I2 and the battery-terminal voltage V2 at this point of time are detected in the same way. These detection values are operated digitally by an operation circuit 24 and thereby the dead short current at the time of short-circuit of a battery found in the parentheses on the right side of an expression I is calculated. And, by multiplying process with a constant A settled in accordance with the kind of the battery and irrespective of the temperature of the battery liquid, which is found beforehand, and by addition of a similar constant B from a computing circuit 28 for the quantity of charged and discharged electricity after D/A conversion, the capacity of the battery based on the expression I is determined.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2922280A JPS56126773A (en) | 1980-03-10 | 1980-03-10 | Detecting method for capacity of battery for automobile |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2922280A JPS56126773A (en) | 1980-03-10 | 1980-03-10 | Detecting method for capacity of battery for automobile |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS56126773A true JPS56126773A (en) | 1981-10-05 |
| JPH0137702B2 JPH0137702B2 (en) | 1989-08-09 |
Family
ID=12270176
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2922280A Granted JPS56126773A (en) | 1980-03-10 | 1980-03-10 | Detecting method for capacity of battery for automobile |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS56126773A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6845332B2 (en) | 2001-11-16 | 2005-01-18 | Toyota Jidosha Kabushiki Kaisha | State of charge calculation device and state of charge calculation method |
| EP2138857A1 (en) * | 2007-04-19 | 2009-12-30 | Panasonic EV Energy Co., Ltd. | Apparatus and method for detecting charged state of electric storage device |
-
1980
- 1980-03-10 JP JP2922280A patent/JPS56126773A/en active Granted
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6845332B2 (en) | 2001-11-16 | 2005-01-18 | Toyota Jidosha Kabushiki Kaisha | State of charge calculation device and state of charge calculation method |
| EP2138857A1 (en) * | 2007-04-19 | 2009-12-30 | Panasonic EV Energy Co., Ltd. | Apparatus and method for detecting charged state of electric storage device |
| EP2138857A4 (en) * | 2007-04-19 | 2011-08-03 | Panasonic Ev Energy Co Ltd | Apparatus and method for detecting charged state of electric storage device |
| US8521458B2 (en) | 2007-04-19 | 2013-08-27 | Panasonic Ev Energy Co., Ltd. | Apparatus and method for detecting charged state of electric storage device |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0137702B2 (en) | 1989-08-09 |
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