Title:
POWER STORAGE DEVICE
Document Type and Number:
WIPO Patent Application WO/2019/198347
Kind Code:
A1
Abstract:
This power storage device (101AB) comprises cell balance circuits (2A, 2B) that are respectively connected to a plurality of mutually connected secondary batteries (1A, 1B). The cell balance circuits (2A, 2B) each comprise a passive electrode (4A, 4B), an active electrode (3A, 3B), a transformer, a switching circuit unit, and a control unit. The passive electrodes (4A, 4B) are electrically coupled, and the active electrodes (3A, 3B) are electrically coupled, in an insulated state. Each switching circuit unit comprises a plurality of switch elements and is connected to a secondary battery, and each control unit controls a switching circuit unit. By controlling the switching circuit units, power is transmitted or received through the first cell balance circuit and the second cell balance circuit. As a result, power loss due to forced discharge is avoided, and power efficiency is increased.
Inventors:
KAWANAMI YOSUKE (JP)
SUESADA TSUYOSHI (JP)
SUESADA TSUYOSHI (JP)
Application Number:
PCT/JP2019/006435
Publication Date:
October 17, 2019
Filing Date:
February 21, 2019
Export Citation:
Assignee:
MURATA MANUFACTURING CO (JP)
International Classes:
H02J7/02; H02J7/00; H02J50/05; H02J50/10; H02J50/80
Domestic Patent References:
| WO2014132518A1 | 2014-09-04 |
Foreign References:
| US20180029494A1 | 2018-02-01 | |||
| JP2011234051A | 2011-11-17 | |||
| JP2012210146A | 2012-10-25 |
Attorney, Agent or Firm:
KAEDE PATENT ATTORNEYS' OFFICE (JP)
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