System and method for diagnosing vehicle battery by using big data

Proposed are system and method for diagnosing a vehicle battery by using big data. Battery-related data may be collected through communication from multiple vehicles. A reference battery temperature distribution for each driving condition may be derived by a learning process based on the battery-related big data. The derived reference battery temperature distribution may be used to analyze a current battery temperature distribution of a specific vehicle so as to diagnose whether the battery of the specific vehicle is abnormal.