A battery diagnosis device according to the present invention is for diagnosis of a cell group including multiple battery cells connected in series, and comprises: a voltage sensing circuit configured to periodically generate a voltage signal indicating a cell voltage of each battery cell; and a control circuit configured to generate time series data indicating a change in the cell voltage of each battery cell over time on the basis of the voltage signal. The control circuit is configured to: (i) determine a first average cell voltage and a second average cell voltage of each battery cell on the basis of the time series data [wherein the first average cell voltage corresponds to a short-term moving average, and the second average cell voltage corresponds to a long-term moving average]; and (ii) detect an anomaly in the voltage of each battery cell on the basis of a difference between the first average cell voltage and the second average cell voltage.
Un dispositif de diagnostic de batterie selon la présente invention permet le diagnostic d'un groupe de cellules comprenant de multiples cellules de batterie connectées en série, et comprend : un circuit de détection de tension conçu pour générer périodiquement un signal de tension indiquant une tension de cellule de chaque cellule de batterie ; et un circuit de commande conçu pour générer des données chronologiques indiquant un changement de la tension de cellule de chaque cellule de batterie dans le temps sur la base du signal de tension. Le circuit de commande est conçu pour : (i) déterminer une première tension de cellule moyenne et une seconde tension de cellule moyenne de chaque cellule de batterie sur la base des données chronologiques [la première tension de cellule moyenne correspondant à une moyenne mobile à court terme, et la seconde tension de cellule moyenne correspond à une moyenne mobile à long terme] ; et (ii) détecter une anomalie dans la tension de chaque cellule de batterie sur la base d'une différence entre la première tension de cellule moyenne et la seconde tension de cellule moyenne.
본 발명에 따른 배터리 진단 장치는, 직렬 연결된 복수의 배터리 셀을 포함하는 셀 그룹의 진단을 위한 것으로서, 주기적으로 각 배터리 셀의 셀 전압을 나타내는 전압 신호를 생성하도록 구성되는 전압 센싱 회로; 및 상기 전압 신호를 기초로, 각 배터리 셀의 셀 전압의 시간에 따른 변화를 나타내는 시계열 데이터를 생성하도록 구성된 제어 회로를 포함한다. 제어 회로는, (i) 상기 시계열 데이터를 기초로 각 배터리 셀의 제1 평균 셀 전압과 제2 평균 셀 전압을 결정하고[여기서, 상기 제1 평균 셀 전압은 단기 이동 평균이고, 상기 제2 평균 셀 전압은 장기 이동 평균임], (ii) 상기 제1 평균 셀 전압과 상기 제2 평균 셀 전압의 차이를 기초로 각 배터리 셀의 전압 이상을 검출하도록 구성된다.
BATTERY DIAGNOSIS DEVICE, BATTERY DIAGNOSIS METHOD, BATTERY PACK, AND VEHICLE
DISPOSITIF DE DIAGNOSTIC DE BATTERIE, PROCÉDÉ DE DIAGNOSTIC DE BATTERIE, BLOC-BATTERIE ET VÉHICULE
배터리 진단 장치, 배터리 진단 방법, 배터리 팩 및 자동차
2022-06-02
Patent
Electronic Resource
Korean
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