The voltage monitoring of multiple battery modules

The present invention relates to the voltage monitorings of multiple battery modules, belong to technical field of battery management.In voltage monitoring device and voltage monitoring method of the invention, in the case where a voltage monitoring integrated circuit acquisition or monitoring multiple battery modules, consider the voltage acquisition of the pressure drop that the connector between battery modules generates in the charging and discharging circuit a certain battery unit adjacent to connector or the influence that monitoring generates, electric current by acquiring the charging and discharging circuit calculates the pressure drop of the connector as offset voltage, and then determines the voltage monitoring value of the battery unit.Voltage monitoring device, voltage monitoring integrated circuit and voltage monitoring method of the invention advantageously reduces the use of voltage monitoring integrated circuit, reduces cost, and accurate to the voltage monitoring of battery unit.