Title:
POWER SUPPLY DEVICE
Document Type and Number:
Japanese Patent JP2021136853
Kind Code:
A
Abstract:
To provide a power supply device which improves usability when a plurality of battery packs are mounted.SOLUTION: The power supply device includes: a power box 2 including a plurality of battery pack attachment parts on which a plurality of battery packs BT1-BT4 can be mounted at the same time; and an adapter 6 whose one end side is connected to the power box 2, whereas the other end side can be mounted on an external electric tool 50. The power box 2 includes: a charging circuit which charges at least one of the plurality of battery packs, and a discharging circuit which discharges DC from at least one of the battery packs through the adapter; and a control unit which changes the connection of the plurality of battery packs to the charging circuit or the discharging circuit.SELECTED DRAWING: Figure 4
Inventors:
KIJIMA YUJI
NAKANO YASUSHI
KOBAYASHI AKIHIRO
NAKANO YASUSHI
KOBAYASHI AKIHIRO
Application Number:
JP2020034353A
Publication Date:
September 13, 2021
Filing Date:
February 28, 2020
Export Citation:
Assignee:
KOKI HOLDINGS CO LTD
International Classes:
H02J7/00; H01M10/44; H01M50/20; H02J7/02
Domestic Patent References:
| JP2017112802A | 2017-06-22 | |||
| JP2011097766A | 2011-05-12 | |||
| JP2011218510A | 2011-11-04 | |||
| JP2003173822A | 2003-06-20 | |||
| JP2019004631A | 2019-01-10 |
Attorney, Agent or Firm:
Takashi Murai
Hiromi Murai
Hiromi Murai