Unequal-width slot stator assembly with even number of leads in slot and motor

Abstract

The invention belongs to the technical field of flat wire motors, and particularly relates to an unequal-width slot stator assembly with even number of wires in slots and a motor. M + n conductor layers are sequentially arranged in each stator slot along the radial direction of the stator core; the m conductor layers close to the outer side of the stator core are double conductor layers; m is greater than or equal to 1, and n is an even number greater than or equal to 2; and the welding end of the stator winding is used as a leading-out wire, and the other layers of wires closest to the center of the stator iron core are welded on the same layer. And all the in-slot wires closest to the center of the stator core are welded on the same layer at the welding ends. That is, the wire closest to the center of the stator core in the stator winding is inconsistent in twisting direction at the welding end, so that the balanced state of the stator winding can be realized.

Description

technical field [0001] The invention belongs to the technical field of flat wire motors, and in particular relates to an unequal-width slot stator assembly with an even number of wires in the slot and a motor. Background technique [0002] In order to improve the slot full rate of the motor, more and more motor solutions choose square wires as motor wires or flat wire motor solutions. In order to further improve the space utilization rate of the motor, an unequal slot width design is proposed. However, in the existing unequal slot width design solutions, there is a feature that the wires in the outer circular slot form an excessively large width-to-narrow ratio. Wires with large width and narrow ratios are difficult to form, and due to the large turning radius required for the twisting of the wires, the size of the winding end is too large and the advantage of space utilization is lost. Especially when the width of the outer groove and the inner groove are quite different,...

AI Technical Summary

Problems solved by technology

[0003] In addition, the manufacturing cost of flat wire motor equipment is high, and the circuit balance between each branch must be ensured to give full play to its performance superiority

In the prior art, when the number of wires in the slot in the stator slot is an even number, in order to reduce the difficulty of the motor production process, the twisting direction of the wires in the slot at the slot is set to the same direction, which leads to Stator windings with an even number of wires cannot achieve circuit balancing

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