JPS6447217A - Uninterruptible power source equipment - Google Patents
Uninterruptible power source equipmentInfo
- Publication number
- JPS6447217A JPS6447217A JP19902587A JP19902587A JPS6447217A JP S6447217 A JPS6447217 A JP S6447217A JP 19902587 A JP19902587 A JP 19902587A JP 19902587 A JP19902587 A JP 19902587A JP S6447217 A JPS6447217 A JP S6447217A
- Authority
- JP
- Japan
- Prior art keywords
- discharge
- current
- cell
- discharge current
- detected
- 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
Landscapes
- Protection Of Static Devices (AREA)
Abstract
PURPOSE:To improve discharge efficiency of a cell for a, wide range of discharge current, by providing a means for detecting discharge current of cell directly or indirectly and lowering over-discharge protection level according to increase of discharge current. CONSTITUTION:Discharge current of a cell 7 is detected through a current detector 8 and a current signal detected through a multiplier 14 is squared. Output from the multiplier 14 is averaged through a resistor 11 and a capacitor 13 so as to obtain a root mean square of current (I2). Terminal voltage VB of the cell 7 detected through a voltage detection circuit 9 and the root mean square (I2) are added and fed in the form of VB+k.I2 to a comparator 21 through resistors 16, 17 then compared with a voltage set through a variable resistor 20. Consequently, over-discharge protection level can be lowered in proportion to the square of discharge current and the cell can be discharged effectively, resulting in an effective over-discharge protection characteristic.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP19902587A JPS6447217A (en) | 1987-08-11 | 1987-08-11 | Uninterruptible power source equipment |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP19902587A JPS6447217A (en) | 1987-08-11 | 1987-08-11 | Uninterruptible power source equipment |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS6447217A true JPS6447217A (en) | 1989-02-21 |
Family
ID=16400867
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP19902587A Pending JPS6447217A (en) | 1987-08-11 | 1987-08-11 | Uninterruptible power source equipment |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS6447217A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6012121A (en) * | 1983-07-04 | 1985-01-22 | Mitsubishi Rayon Co Ltd | Removal of arsenic component in gaseous phase |
-
1987
- 1987-08-11 JP JP19902587A patent/JPS6447217A/en active Pending
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6012121A (en) * | 1983-07-04 | 1985-01-22 | Mitsubishi Rayon Co Ltd | Removal of arsenic component in gaseous phase |
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