The flat wire motor windings are arranged regularly in the stator slots, the slot full rate is high, and the pure copper slot full rate reaches 70%, which improves the motor torque output capacity and heat dissipation capacity; the magnetic steel double V structure rotor, the magnetic steel utilization rate is high, and the motor torque is improved. and power capability; the PIN pin end of the stator of the flat wire motor is laser welded, the solder joints are full and round, the welding strength is high, the welding efficiency is high, and the solder joint consistency is good.
Advantages of flat wire motors
1. It has a high slot full rate; it can usually reach a slot full rate of more than 70%. Increasing the slot full rate can effectively increase the power density of the motor and improve the heat dissipation in the stator slot;
2. It has a stronger heat dissipation capacity; in addition to the reduction of heat generation of the flat wire at medium and low speeds due to the decrease of AC resistance, compared with the round wire stator, the thermal resistance in the cogging slot is reduced, so that the heat conduction is better;
3. It has stronger power and torque capacity; the flat wire motor has lower heat generation and better heat dissipation capacity. In the electromagnetic design, the heat load of the stator winding is appropriately increased to give the rotor more space to ensure the temperature of the flat wire stator and the round wire stator. Under similar circumstances, increase the outer diameter of the rotor to improve the peak output capability of the motor;
4. Compared with the round wire winding motor, the flat wire winding motor has more efficiency advantages at low speed, and is more suitable for the needs of vehicles in China’s urban road conditions.