Electric vehicle drive system
Hair-Pin motor（PCV ）
Compared to traditional round-wire motors, the shape of the conductors used in the stator windings of hair-pin motors has changed, with windings shifting from multiple thin round wires to several thick rectangular conductors. Due to this change in winding design, hair-pin motors achieve the same power output with a smaller volume and less material usage than traditional round-wire motors. Within the same volume, hair-pin motors can accommodate 20% to 30% more conductors, resulting in a higher slot fill factor, which contributes to increased power density. Secondly, the winding design of hair pins increases the contact area between conductors and reduces internal gaps. When combined with oil-cooling methods, heat dissipation and thermal conduction are improved, enabling hair-pin motors to withstand higher instantaneous power.
Product characteristics
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Platform basedWolong has an OD146-OD530 motor punching platform. A motor punch has multiple power segments,and the platformization of motors facilitates customer installation and effectively reduces costs.
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Product consistencyWolong has multiple intelligent motor production lines. Equipped with fully automated winding and embedding machine and robot automation integrated system, it can achieve fully automated production and ensure stable product quality
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EfficientThe motor adopts high-performance permanent magnets. It has the characteristics of high power density, high efficiency and energy saving. The max efficiency of the motor is ≥ 97%, and the proportion of the high-efficiency zone is ≥ 90%.
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High reliabilityThe laboratory has obtained CNAS (China National Accreditation Service) certification.Covering over 85 testing items such as input-output characteristics, safety, environmental adaptability, reliability, NVH, etc
Motor specification
| Rated voltage (VDC) | 350 |
| Rated power (kW) | 70 |
| Rated torque (Nm) | 130 |
| Rated speed (rpm) | 16000 |
| Insulation level | H |
| Size(mm) | φ184*110 |
| Cooling method | Oil cooling |
| Peak power (kW) | 160 |
| Peak torque (Nm) | 290 |
| Max speed (rpm) | 16000 |
