BATTERY DIAGNOSIS DEVICE, BATTERY PACK, BATTERY SYSTEM, AND BATTERY DIAGNOSIS METHOD

• Main Author: LEE, Hyun-Jun
• Format: Patent
• Language: English; French; Korean
• Published: 10.02.2022
• Subjects: MEASURING; MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES; PHYSICS; TESTING

A battery diagnosis device according to the present invention comprises: a memory configured to store an observation matrix including multiple observation voltage vectors indicating a time series of cell voltages of multiple battery cells; and a control unit configured to determine multiple primary component vectors, multiple singular values, and multiple coefficient vectors from the observation matrix. Each coefficient vector comprises multiple coefficients corresponding to the multiple observation voltage vectors one-to-one. The control unit is configured to: with respect to each coefficient vector, compare multiple coefficients included in the corresponding coefficient vector, so as to determine an invalid coefficient among the multiple coefficients; and detect anomaly of a battery cell corresponding to the invalid coefficient, among the multiple battery cells, on the basis of a primary component vector corresponding to the corresponding coefficient vector, among the multiple primary component vectors, a singular value corresponding to the corresponding coefficient vector, among the multiple singular values, and the invalid coefficient. Un dispositif de diagnostic de batterie selon la présente invention comprend : une mémoire configurée pour stocker une matrice d'observation comprenant de multiples vecteurs de tension d'observation indiquant une série chronologique de tensions de cellule de multiples cellules de batterie ; et une unité de commande configurée pour déterminer de multiples vecteurs de composants principaux, de multiples valeurs singulières et de multiples vecteurs de coefficients à partir de la matrice d'observation. Chaque vecteur de coefficient comprend de multiples coefficients correspondant aux multiples vecteurs de tension d'observation de façon biunivoque. L'unité de commande est configurée pour : par rapport à chaque vecteur de coefficient, comparer de multiples coefficients inclus dans le vecteur de coefficient correspondant, de façon à déterminer un coefficient invalide parmi les multiples coefficients ; et détecter une anomalie d'une cellule de batterie correspondant au coefficient invalide, parmi les multiples cellules de batterie, en fonction d'un vecteur de composant principal correspondant au vecteur de coefficient correspondant, parmi les multiples vecteurs de composants principaux, d'une valeur singulière correspondant au vecteur de coefficient correspondant, parmi les multiples valeurs singulières, et du coefficient invalide. 본 발명에 따른 배터리 진단 디바이스는, 복수의 배터리 셀 각각의 셀 전압의 시계열을 나타내는 복수의 관측 전압 벡터를 포함하는 관측 행렬을 저장하도록 구성되는 메모리; 및 상기 관측 행렬로부터, 복수의 주성분 벡터, 복수의 특이값 및 복수의 계수 벡터를 결정하도록 구성되는 제어부를 포함한다. 각 계수 벡터는, 상기 복수의 관측 전압 벡터에 일대일 대응하는 복수의 계수를 포함한다. 상기 제어부는, 각 계수 벡터에 대하여, 해당 계수 벡터에 포함된 복수의 계수를 비교하여, 상기 복수의 계수 중에서 비유효 계수를 결정하고, 상기 복수의 주성분 벡터 중 해당 계수 벡터에 대응하는 주성분 벡터, 상기 복수의 특이값 중 해당 계수 벡터에 대응하는 특이값 및 상기 비유효 계수를 기초로, 상기 복수의 배터리 셀 중 상기 비유효 계수에 대응하는 배터리 셀의 이상을 검출하도록 구성된다.