BATTERY SYSTEM AND PROTECTION METHOD THEREOF
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United States of America Patent
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Issued Date -
Mar 16, 2023
app pub date -
Dec 21, 2021
filing date -
Sep 11, 2021
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Abstract
A battery system includes several unit battery groups, a main switch, a current measuring unit, several slave control units and a master control unit. Each unit battery group includes several cells. The main switch and the current measuring unit are serially connected to the unit battery groups. The current measuring unit measures a measured system current value of the unit battery groups. The slave control units are electrically connected to the unit battery groups respectively. Each slave control unit measures a physical parameter value of each cell in each unit battery group. The master control unit communicates with the slave control units to: disconnect the main switch when the abnormality determined according to the physical parameter value or the measured system current value pertains to system abnormality; and, perform a processing procedure for detection abnormality when the abnormality pertains to detection abnormality.
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