Title:
二次電池監視装置
Document Type and Number:
Japanese Patent JP5694902
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide a system for detecting states of respective secondary batteries by receiving power supply from the secondary batteries formed from serially connected secondary battery cells, the system capable of achieving effective utilization of electric power stored in the secondary batteries, optimum battery capacities and miniaturized batteries by maintaining discharge amount of each battery pack unit so that the discharge amount is always equal.SOLUTION: A secondary battery monitoring device is constructed by serially connecting battery units formed from one or more chargeable and dischargeable battery cells and monitoring devices that detect states of the battery cells. In each of the battery units, there are provided a first power supply circuit that supplies electric power to the monitoring devices and a second power supply circuit that supplies electric power evenly from all the battery units.
Inventors:
Yu Arita
Eiichi Toyota
Masahiro Nagasu
Akihiko Emori
Eiichi Toyota
Masahiro Nagasu
Akihiko Emori
Application Number:
JP2011246077A
Publication Date:
April 01, 2015
Filing Date:
November 10, 2011
Export Citation:
Assignee:
株式会社日立製作所
International Classes:
H02J7/02; H01M10/44; H01M10/48
Domestic Patent References:
| JP2010117235A | ||||
| JP2011078200A | ||||
| JP2008245481A |
Attorney, Agent or Firm:
Patent Business Corporation Daiichi International Patent Office