SmartGen HBMU100 BMS Control Module
Receive the voltage and temperature of the single cell of BMU module via the non-isolated CAN interface and calculate the data of max. and min voltage/ temperature, etc., control the BMU
Cell voltage measurement is defined as the process of quantifying the voltage of individual battery cells or a battery pack, which is essential for determining the state of charge (SOC) and ensuring accurate battery management in various applications.
Figure 1's voltmeter measures a single cell battery. Beyond the obvious, the arrangement works because there are no voltages in the measurement path other than the measur-and. The ground referred voltmeter only encounters the voltage to be measured. Figure 2's “stack” of series connected cells is more complex and presents problems.
Voltmeter Measuring Ground Referred Single Cell is Not Subjected to Common Mode Voltage volts in a large series connected battery stack such as is used in an automobile. Such high voltage operation is beyond the voltage breakdown capabilities of most prac-tical semiconductor components, particularly if accurate measurement is required.
You must account for the accuracy of the cell voltage measurement when determining whether to disable the battery pack.
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