This paper describes independent multi-phase motor with a maximum torque among DC motor used for Divide Type Powder Molding Core BLDC. Independent multi-phase BLDC motor has characteristic that density of core are independent electrically. This paper is modeling of magnetic flux density BLDC motors, one has low magnetic flux density type and the other has high magnetic flux Density type, and it shows simulation of them, compares its characteristics. This paper focuses on starting performance improvement and magnetic flux density improvement of brushless DC motor for EV. As a result of simulation, the efficiency of BLDC motor of high magnetic flux density 7.41~7.48 g/cm2 is higher than BLDC motor of low magnetic flux density 7.11~7.28 g/cm2. It is also found that the motor efficiency of independent multi-phase BLDC motor was decreased by the magnetic flux density of independent BLDC motor. In order to increase efficiency from the motor and keep the motor operating at its most quality warranty, the high magnetic flux density of divide type power molding core using on motor for an EV is proposed and analyzed specifically.