Title:
DEVICE AND METHOD FOR CHARGING SECONDARY BATTERY
Document Type and Number:
WIPO Patent Application WO/2020/116853
Kind Code:
A1
Abstract:
The present invention provides a device and method for charging a secondary battery. A charging device according to the present invention comprises a control unit for receiving a measured voltage value and a measured temperature value input from a voltage measurement unit and a temperature measurement unit, respectively, and adjusting the magnitude of a charge current. The control unit determines the average ion concentration and surface ion concentration of anode particles, the anode particle potential, and the anode electrolyte potential by using an electrochemical reduced-order model. In addition, the control unit determines the charging state of a secondary battery from the average ion concentration and determines the side reaction rate from the anode particle potential and the anode electrolyte potential. Further, the control unit attenuates the magnitude of the charge current applied to a secondary battery if at least one of (i) a condition in which the measured voltage value reaches a cutoff voltage, (ii) a condition in which the surface ion concentration of anode particles reaches an upper limit concentration, and (iii) a condition in which the side reaction rate reaches an upper limit rate is satisfied.
Inventors:
CHOE SONG-YUL (US)
YIN YILIN (US)
JO HA-NA (KR)
JOE WON-TAE (KR)
AHN HYOUNG JUN (KR)
LIM JIN-HYUNG (KR)
YIN YILIN (US)
JO HA-NA (KR)
JOE WON-TAE (KR)
AHN HYOUNG JUN (KR)
LIM JIN-HYUNG (KR)
Application Number:
PCT/KR2019/016504
Publication Date:
June 11, 2020
Filing Date:
November 27, 2019
Export Citation:
Assignee:
LG CHEMICAL LTD (KR)
UNIV AUBURN (US)
UNIV AUBURN (US)
International Classes:
H02J7/00; G01R31/367; G01R31/382
Foreign References:
| KR20170134193A | 2017-12-06 | |||
| US20160336765A1 | 2016-11-17 | |||
| US9197089B2 | 2015-11-24 | |||
| US201862776117P | 2018-12-06 | |||
| KR20190060657A | 2019-06-03 |
Other References:
KUMAR, V. SENTHIL.: "Reduced order model for a lithium ion cell with uni form reaction rate approximation", JOURNAL OF POWER SOURCES, vol. 222, 5 September 2012 (2012-09-05), pages 426 - 441, XP028516114
LEE, JAMES L. ET AL.: "Extended operating range for reduced-order model of lithium-ion cells", IN: JOURNAL OF POWER SOURCES, vol. 255, 1 June 2014 (2014-06-01), pages 85 - 100, XP028613878, DOI: 10.1016/j.jpowsour.2013.12.134
X. LIM. XIAOS. Y. CHOE: "Reduced order model (ROM) of a pouch type lithium polymer battery based on electrochemical thermal principles for real time applications", ELECTROCHIMICA ACTA, vol. 97, 2013, pages 66 - 78
J. LIN. LOTFIR. G. LANDERSJ. PARK: "A Single Particle Model for Lithium-Ion Batteries with Electrolyte and Stress-Enhanced Diffusion Physics", JOURNAL OF THE ELECTROCHEMICAL SOCIETY, vol. 164, no. 4, 2017, pages A874 - A883
LEE, JAMES L. ET AL.: "Extended operating range for reduced-order model of lithium-ion cells", IN: JOURNAL OF POWER SOURCES, vol. 255, 1 June 2014 (2014-06-01), pages 85 - 100, XP028613878, DOI: 10.1016/j.jpowsour.2013.12.134
X. LIM. XIAOS. Y. CHOE: "Reduced order model (ROM) of a pouch type lithium polymer battery based on electrochemical thermal principles for real time applications", ELECTROCHIMICA ACTA, vol. 97, 2013, pages 66 - 78
J. LIN. LOTFIR. G. LANDERSJ. PARK: "A Single Particle Model for Lithium-Ion Batteries with Electrolyte and Stress-Enhanced Diffusion Physics", JOURNAL OF THE ELECTROCHEMICAL SOCIETY, vol. 164, no. 4, 2017, pages A874 - A883
Attorney, Agent or Firm:
PHIL & ONZI INT'L PATENT & LAW FIRM (KR)
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