Title:
リチウムイオン二次電池の充放電制御装置
Document Type and Number:
Japanese Patent JP5210776
Kind Code:
B2
Abstract:
In a charging/discharging unit provided with: a lithium secondary battery, a voltage detecting sensor for detecting a voltage and a current detecting sensor; the charging/discharging control unit is further provided with a controller, and a discharging element for performing a constant voltage discharging operation of 3 V. A voltage, V0, of the battery when a discharging operation is terminated (t=0) is measured by the voltage detecting sensor. If V0≰3.6 V, within a rest time during which the battery is not charged/discharged until a next charging operation, a voltage, V1, of the battery when a time, t1, has elapsed is measured by the voltage detecting sensor. If this voltage charge is in a range of V1-V0≧0.2 V, then the constant voltage discharging operation of 3 V is carried out for a time duration longer than or equal to 1 hour.
Inventors:
Masato Kumashiro
Yoshiuchi Yauchi
Eiji
Yoshiuchi Yauchi
Eiji
Application Number:
JP2008245892A
Publication Date:
June 12, 2013
Filing Date:
September 25, 2008
Export Citation:
Assignee:
株式会社日立製作所
International Classes:
H01M10/44; G01R31/36; H01M4/131; H01M4/133; H01M4/36; H01M4/505; H01M4/525; H01M4/587; H01M10/052; H01M10/0525; H01M10/0566; H02J7/00
Domestic Patent References:
| JP10257684A | ||||
| JP2004282894A | ||||
| JP2004171864A | ||||
| JP2004079335A | ||||
| JP2004079327A | ||||
| JP2006140115A | ||||
| JP2001526877A |
Foreign References:
| WO1999016144A1 |
Other References:
最新実用二次電池 -その選び方と使い方-,1995年,初版,p.260
Attorney, Agent or Firm:
Polaire Patent Business Corporation