ＳＯＣ補正方法及び装置、電池管理システム、並びに記憶媒体

Japanese Patent JP6963647

B2

A method and apparatus for correcting a SOC, a battery management system and a storage medium are provided. The method includes: acquiring (101) state data of a battery cell in a case where the battery cell meets a preset standing condition; determining (102), when a length of voltage data in the state data of the battery cell is greater than a first preset length and less than a second preset length, and a change value of the voltage data in the state data of the battery cell is greater than a preset change threshold, a first set of pending parameters of a predetermined near-steady-state battery model according to the state data of the battery cell; predicting (103), according to the first set of pending parameters, a second set of pending parameters of the predetermined near-steady-state battery model; calculating (104) an estimated steady-state OCV value according to the second set of pending parameters; and determining (104) a SOC correction value corresponding to the estimated steady-state OCV value by using a preset correspondence between steady-state OCVs and SOCs to correct current SOC. With embodiments of the disclosure, a steady-state OCV of a battery can be quickly estimated by using characteristics of an external circuit during a short standing time period of the battery, and applicability of an open circuit voltage method can be improved.

Ruan
Lee Seong
Akiki Tomori
Shinyuki Yu
Roh Hua
Zhang Wei

JP2020048767A

November 10, 2021

March 19, 2020

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Contemporary Amperex Technology Co., Limited

G01R31/388; G01R31/367; H01M10/48; H02J7/00

JP2011072161A
JP2017016991A

US20100121591
CN108132442A

Yoshiyuki Inaba
Toshifumi Onuki
Akihiko Eguchi
Kazuhiko Naito

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