Title:
CHARGING CIRCUIT FOR SECONDARY BATTERY
Document Type and Number:
Japanese Patent JP3177524
Kind Code:
B2
Abstract:
PURPOSE: To interrupt quick charging at an accurate timing by decreasing the charging current when the number of temperature data, having difference from a newest temperature data exceeding a predetermined value, reaches a predetermined number thereby catching an abrupt temperature rise at the end of charging of a secondary battery positively.
CONSTITUTION: Assuming the temperature data stored, respectively, in memory areas M0-MK-1 are T0-TK-1, a CPU 6 calculates the differential data between a newest temperature data T0 and other temperature data T1-TK-1. Each temperature difference data is then checked against a predetermined value and when the number of temperature data exceeding the predetermined value reaches a predetermined number, a decision is made that quick charging has completed. The CPU 6 then controls a charging power supply 1 to decrease the charging current and to make a transition to a supplementary charging mode or a trickle charging mode.
More Like This:
| JPH1028339 | BATTERY CHARGER |
| JP2015081516 | ELECTRIC SUPERCHARGER OUTPUT CONTROL DEVICE AND ELECTRIC SUPERCHARGER OUTPUT CONTROL METHOD |
| JP2019051045 | VACUUM CLEANER |
Inventors:
Teiichi Enomoto
Nobuo Shioshima
Nobuo Shioshima
Application Number:
JP18647491A
Publication Date:
June 18, 2001
Filing Date:
July 25, 1991
Export Citation:
Assignee:
Toshiba Battery Co., Ltd.
International Classes:
H02J7/10; H02J7/00; (IPC1-7): H02J7/10
Domestic Patent References:
| JP2246739A | ||||
| JP2266835A |
Attorney, Agent or Firm:
Takehiko Suzue