BATTERY SYSTEM AND VEHICLE HAVING THE SAME

• Main Author: IZUMI JUNTA
• Format: Patent
• Language: English
• Published: 13.12.2012
• Subjects: BASIC ELECTRIC ELEMENTS; CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTINGELECTRIC POWER; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER; ELECTRIC EQUIPMENT OR PROPULSION OF ELECTRICALLY-PROPELLEDVEHICLES; ELECTRICITY; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES, IN GENERAL; GENERATION; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MEASURING; MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES; PERFORMING OPERATIONS; PHYSICS; PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSIONOF CHEMICAL INTO ELECTRICAL ENERGY; SYSTEMS FOR STORING ELECTRIC ENERGY; TESTING; TRANSPORTING; VEHICLES IN GENERAL

PROBLEM TO BE SOLVED: To provide a battery system capable of specifying a failure portion in detail when a failure related to a battery occurs, and a vehicle having the same.SOLUTION: A battery system comprises: a battery 200 which is formed by serially connecting a plurality of battery cells; a charging/discharging unit 19 which performs charging/discharging of the battery; a voltage monitoring unit DV which detects a cell voltage abnormal condition in which a voltage of any of the plurality of battery cells falls into out of a prescribed range; and a controller 15 which limits charging/discharging of the charging/discharging unit according to the detection result of the voltage monitoring unit DV. The battery system diagnoses the charging/discharging unit as an abnormal condition when a predetermined amount of charging/discharging continues after the limitation by the controller 15.