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Patent Searching and Data


Title:
POWER CIRCUIT FOR ENERGY TRANSMISSION BETWEEN BATTERY AND SMOOTHING CAPACITOR, BATTERY MANAGEMENT SYSTEM, AND BATTERY PACK
Document Type and Number:
WIPO Patent Application WO/2019/160257
Kind Code:
A1
Abstract:
A power circuit for energy transmission between a battery and a smoothing capacitor, a battery management system, and a battery pack are provided. The power circuit comprises: a transformer including a first wiring and a second wiring; a first switching circuit including a first switch connected, in series, to the first wiring and connected, in parallel, to the battery together with the first wiring; a second switching circuit including a second switch connected, in series, to the second wiring and connected, in parallel, to the smoothing capacitor together with the second wiring; and a switch controller. The switch controller is configured, in order to precharge the smoothing capacitor, so as to execute a first operation of turning on the first switch and turning off the second switch and, then, to execute a second operation of turning off the first switch and turning on the second switch.

Inventors:
SONG HYEON-JIN (KR)
YU SEON-UK (KR)
Application Number:
KR2019/001181
Publication Date:
August 22, 2019
Filing Date:
January 28, 2019
Export Citation:
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Assignee:
LG CHEMICAL LTD (KR)
International Classes:
H02J7/34; H02J1/02; H02J7/00
Foreign References:
KR20150096919A2015-08-26
JP2017085869A2017-05-18
JP2016167955A2016-09-15
JP2015107045A2015-06-08
JP2009240097A2009-10-15
KR20180018598A2018-02-21
KR20140170774A2014-12-02
Other References:
See also references of EP 3678280A4
Attorney, Agent or Firm:
PHIL & ONZI INT'L PATENT & LAW FIRM (KR)
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