Title:
電動工具
Document Type and Number:
Japanese Patent JP5488877
Kind Code:
B2
Abstract:
The present invention features a battery pack and a power tool using the same. The battery pack includes a battery, a switching element, and a control section. The battery has a plurality of rechargeable battery cells and configured to supply power to an electric power tool. The switching element is connected to the battery in series. The control section controls a switching operation of the switching element. The control section receives voltage specification information from the electric power tool, the voltage specification information including an available voltage for the electric power tool. The control section controls the switching operation of the switching element in accordance with the available voltage. Preferably, the voltage specification information has a rated voltage of the power tool.
Inventors:
Yoshikazu Kono
Nobuhiro Takano
Eiji Nakayama
Kenmaru Ishimaru
Haruhisa Fujisawa
Keita Saito
Nobuhiro Takano
Eiji Nakayama
Kenmaru Ishimaru
Haruhisa Fujisawa
Keita Saito
Application Number:
JP2009215124A
Publication Date:
May 14, 2014
Filing Date:
September 17, 2009
Export Citation:
Assignee:
Hitachi Koki Co., Ltd.
International Classes:
H02J7/00; H01M10/44
Domestic Patent References:
| JP2008178278A | ||||
| JP2002305037A | ||||
| JP2001129769A | ||||
| JP2009089499A | ||||
| JP11004788A | ||||
| JP2004307163A | ||||
| JP2007520180A | ||||
| JP2002315217A | ||||
| JP2008177138A |
Attorney, Agent or Firm:
Kazuhiro Kitazawa
Shin Koizumi
Akiko Ichikawa
Kunihiko Wakabayashi
Shin Koizumi
Akiko Ichikawa
Kunihiko Wakabayashi