Battery system monitoring method and device based on OBD-II

The invention discloses battery system monitoring method and device based on OBD-II, which relate to the technical field of monitoring of batteries for vehicles. The method is characterized in that a data acquiring module, an OBD-II failure diagnosing module, a safety monitoring module, a heat monitoring module, a communication module, an SOC estimating module and an interactive display module are provided, wherein the OBD-II failure diagnosing module comprises a signal acquiring unit, a failure recognizing unit and a failure processing unit. The device comprises a data acquiring interface, a signal adjusting circuit, a microprocessor, a data memory and a program memory. Tests prove that the battery system monitoring method and device can construct and monitor all parameters of a battery system and carry out failure diagnosis, improves the safety of the system, is convenient for daily maintenance and failure repair and has an important function on the development of the current finished vehicle distributed control network.