A battery diagnosis device according to the present invention comprises: a voltage sensor which generates a voltage signal indicating a battery voltage of a battery; a current sensor which generates a current signal indicating a battery current flowing through the battery; and a control circuit. The control circuit determines a measured capacity curve for a predetermined set voltage range on the basis of the voltage signal and the current signal which are collected per unit time for a constant current period for which the battery is discharged or charged at a predetermined current rate throughout the set voltage range. The control circuit determines a measured differential curve for the set voltage range on the basis of the measured capacity curve. The control circuit compares a reference differential curve with the measured differential curve so as to determine whether a negative electrode tortuosity of the battery is abnormally increased.
Un dispositif de diagnostic de batterie selon la présente invention comprend : un capteur de tension qui génère un signal de tension indiquant une tension de batterie d'une batterie ; un capteur de courant qui génère un signal de courant indiquant un courant de batterie circulant dans la batterie ; et un circuit de commande. Le circuit de commande détermine une courbe de capacité mesurée pour une plage de tension définie prédéterminée sur la base du signal de tension et du signal de courant qui sont collectés par unité de temps pendant une période de courant constant pendant laquelle la batterie est déchargée ou chargée à un débit de courant prédéterminé dans la plage de tension définie. Le circuit de commande détermine une courbe différentielle mesurée pour la plage de tension définie sur la base de la courbe de capacité mesurée. Le circuit de commande compare une courbe différentielle de référence à la courbe différentielle mesurée de façon à déterminer si une tortuosité d'électrode négative de la batterie est anormalement augmentée.
본 발명에 따른 배터리 진단 장치는, 배터리의 배터리 전압을 나타내는 전압 신호를 생성하는 전압 센서; 상기 배터리를 통해 흐르는 배터리 전류를 나타내는 전류 신호를 생성하는 전류 센서; 및 제어 회로를 포함한다. 상기 제어 회로는, 상기 배터리가 소정의 설정 전압 범위에 걸쳐 소정의 전류 레이트로 방전 또는 충전되는 정전류 기간 동안에 단위 시간마다 수집된 상기 전압 신호 및 상기 전류 신호를 기초로, 상기 설정 전압 범위에 대한 측정 용량 커브를 결정한다. 상기 제어 회로는, 상기 측정 용량 커브를 기초로, 상기 설정 전압 범위에 대한 측정 미분 커브를 결정한다. 상기 제어 회로는, 상기 측정 미분 커브와 기준 미분 커브를 비교하여, 상기 배터리의 음극 굴곡도의 비정상적인 증가 여부를 판정한다.
BATTERY DIAGNOSIS DEVICE, BATTERY DIAGNOSIS METHOD, BATTERY PACK, AND ELECTRIC VEHICLE
DISPOSITIF DE DIAGNOSTIC DE BATTERIE, PROCÉDÉ DE DIAGNOSTIC DE BATTERIE, BLOC-BATTERIE ET VÉHICULE ÉLECTRIQUE
배터리 진단 장치, 배터리 진단 방법, 배터리 팩 및 전기 차량
2022-07-07
Patent
Electronic Resource
Korean
IPC: | G01R Messen elektrischer Größen , MEASURING ELECTRIC VARIABLES / B60L PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES , Antrieb von elektrisch angetriebenen Fahrzeugen / H01M Verfahren oder Mittel, z.B. Batterien, für die direkte Umwandlung von chemischer in elektrische Energie , PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY |
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