Title:
BATTERY MANAGEMENT SYSTEM AND METHOD FOR OPTIMIZING INTERNAL RESISTANCE OF BATTERY
Document Type and Number:
WIPO Patent Application WO/2019/135487
Kind Code:
A1
Abstract:
A battery management system and method for optimizing the internal resistance of a battery are disclosed. The battery management system according to one embodiment of the present invention comprises: a current measuring unit for measuring the charging current of the battery; a memory for storing a plurality of voltage-current characteristics profiles; and a control unit operably coupled to the current measuring unit and the memory, and determining a reference profile from the plurality of voltage-current characteristics profiles on the basis of the state of charge and the temperature of the battery. The reference profile includes a start point, an end point and a plurality of intermediate points positioned between the start point and the end point. The control unit: determines the internal resistance of the battery on the basis of the start point and the end point; sets, as a reference point, any one of the plurality of intermediate points; determines, on the basis of the reference point and the end point, a reference resistance that is smaller than the internal resistance; and determines, on the basis of the charging current, the internal resistance, the reference resistance and a predetermined upper limit charging current, an optimum resistance that is bigger than the internal resistance.
Inventors:
CHA SUN-YOUNG (KR)
Application Number:
PCT/KR2018/014036
Publication Date:
July 11, 2019
Filing Date:
November 15, 2018
Export Citation:
Assignee:
LG CHEMICAL LTD (KR)
International Classes:
H01M10/42; G01R19/165; G01R31/36; H01M10/44
Foreign References:
| KR20130016361A | 2013-02-14 | |||
| KR20120091835A | 2012-08-20 | |||
| US20060087291A1 | 2006-04-27 | |||
| KR20140025310A | 2014-03-04 | |||
| US6522102B1 | 2003-02-18 | |||
| KR20180000878A | 2018-01-04 | |||
| KR20060052273A | 2006-05-19 |
Other References:
See also references of EP 3633782A4
Attorney, Agent or Firm:
PHIL & ONZI INT'L PATENT & LAW FIRM (KR)
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