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1. WO2020130630 - DEVICE FOR ESTIMATING STATE OF CHARGE OF BATTERY

Publication Number WO/2020/130630
Publication Date 25.06.2020
International Application No. PCT/KR2019/018004
International Filing Date 18.12.2019
IPC
G01R 31/367 2019.01
GPHYSICS
01MEASURING; TESTING
RMEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
31Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
36Arrangements for testing, measuring or monitoring the electrical condition of accumulators or electric batteries, e.g. capacity or state of charge
367Software therefor, e.g. for battery testing using modelling or look-up tables
G01R 31/374 2019.01
GPHYSICS
01MEASURING; TESTING
RMEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
31Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
36Arrangements for testing, measuring or monitoring the electrical condition of accumulators or electric batteries, e.g. capacity or state of charge
374with means for correcting the measurement for temperature or ageing
G01R 31/3835 2019.01
GPHYSICS
01MEASURING; TESTING
RMEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
31Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
36Arrangements for testing, measuring or monitoring the electrical condition of accumulators or electric batteries, e.g. capacity or state of charge
382Arrangements for monitoring battery or accumulator variables, e.g. SoC
3835involving only voltage measurements
G01R 31/388 2019.01
GPHYSICS
01MEASURING; TESTING
RMEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
31Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
36Arrangements for testing, measuring or monitoring the electrical condition of accumulators or electric batteries, e.g. capacity or state of charge
385Arrangements for measuring battery or accumulator variables
387Determining ampere-hour charge capacity or SoC
388involving voltage measurements
Applicants
  • 주식회사 엘지화학 LG CHEM, LTD. [KR]/[KR]
Inventors
  • 김영진 KIM, Young-Jin
Agents
  • 특허법인 필앤온지 PHIL & ONZI INT'L PATENT & LAW FIRM
Priority Data
10-2018-016786921.12.2018KR
Publication Language Korean (KO)
Filing Language Korean (KO)
Designated States
Title
(EN) DEVICE FOR ESTIMATING STATE OF CHARGE OF BATTERY
(FR) PROCÉDÉ POUR ESTIMER L'ÉTAT DE CHARGE D'UNE BATTERIE
(KO) 배터리 충전 상태 추정 장치
Abstract
(EN)
A device for estimating the state of charge of a battery, of the present invention, comprises: a sensing unit for measuring at least one of a first voltage and an open circuit voltage of a battery; and a processor operably coupled to the sensing unit. The processor includes a processor which: estimates a second voltage of the battery on the basis of the open circuit voltage of the battery or a pre-estimated first state of charge thereof; calculates an integrated voltage error value by integrating a voltage error value between the first voltage and the second voltage of the battery; corrects the second voltage of the battery depending on whether the integrated voltage error value is included within a reference error range; and estimates the first state of charge of the battery on the basis of the second voltage or the corrected second voltage.
(FR)
La présente invention concerne un dispositif pour estimer l'état de charge d'une batterie qui comprend : une unité de détection pour mesurer au moins une tension parmi une première tension et une tension de circuit ouvert d'une batterie ; et un processeur couplé de manière fonctionnelle à l'unité de détection. Le processeur comprend un processeur qui : estime une seconde tension de la batterie sur la base de la tension de circuit ouvert de la batterie ou d'un premier état de charge préalablement estimé de celle-ci ; calcule une valeur d'erreur de tension intégrée par intégration d'une valeur d'erreur de tension entre la première tension et la seconde tension de la batterie ; corrige la seconde tension de la batterie selon que la valeur d'erreur de tension intégrée est incluse ou non dans une plage d'erreur de référence ; et estime le premier état de charge de la batterie sur la base de la seconde tension ou de la seconde tension corrigée.
(KO)
본 발명은 배터리 충전 상태 추정 장치는 배터리의 제1 전압 및 개방 전압 중 적어도 하나를 측정하도록 구성된 센싱부; 및 상기 센싱부와 동작 가능하게 결합된 프로세서를 포함한다. 상기 프로세서는, 상기 배터리의 개방 전압 또는 미리 추정된 제1 충전 상태에 기초하여 상기 배터리의 제2 전압을 추정하고, 상기 배터리의 제1 전압과 상기 제2 전압 간의 전압 오차값을 적산하여 적산 전압 오차값을 산출하며, 상기 적산 전압 오차값이 기준 오차 범위에 포함되는지 여부에 따라 상기 배터리의 제2 전압을 보정하고, 상기 제2 전압 또는 보정된 제2 전압에 기반하여 상기 배터리의 제1 충전 상태를 추정하도록 구성된 프로세서를 포함한다.
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