Provided is a battery state detection device suitable for detecting a state of a battery mounted on a vehicle. A μCOM uses a first capacitor to measure a first sample of battery voltage, and after a predetermined standby time has elapsed, executes sample hold processing using the second capacitor for performing the second sample hold of the battery voltage. The μCOM detects the state of the battery based on the output of the differential amplifier when a condition is satisfied that the battery current is constant during both the first sample hold and the second sample hold and the battery current fluctuates during the standby time.
BATTERY STATE DETECTION DEVICE
26.07.2018
Patent
Elektronische Ressource
Englisch
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