DEVICE AND METHOD FOR MONITORING STATE OF BATTERY AND DEVICE FOR PROTECTING

• Main Authors: MOON BYEONG-HO, KONG SUNG-SIK, KIM MIN-KYU
• Format: Patent
• Language: Chinese; English
• Published: 08.12.2023
• Subjects: MEASURING; MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES; PHYSICS; TESTING

A battery state monitoring device and method and a battery protection device according to an embodiment of the present invention may include: a first current sensor connected to a positive terminal of a battery to measure a first current value; a second current sensor connected to the negative terminal of the battery to measure a second current value; contactors including a first contactor positioned between the positive terminal of the battery and the first current sensor and a second contactor positioned between the negative terminal of the battery and the second current sensor; and a controller configured to set a representative current value among the first current value and the second current value, and determine whether the representative current value is an abnormal current, and thus, by measuring and monitoring the current using heterogeneous current sensors, it is possible to stably measure the battery current even when one current sensor fails, thereby improving the reliability of the battery. The p