POWER CIRCUIT FOR ENERGY TRANSMISSION BETWEEN BATTERY AND SMOOTHING CAPACITOR, BATTERY MANAGEMENT SYSTEM, AND BATTERY PACK

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:

PCT/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:

KR20150096919A	2015-08-26
JP2017085869A	2017-05-18
JP2016167955A	2016-09-15
JP2015107045A	2015-06-08
JP2009240097A	2009-10-15
KR20180018598A	2018-02-21
KR20140170774A	2014-12-02

Other References: