A flat wire motor stator

Abstract

The invention discloses a stator of a flat wire motor. The stator core is provided with a plurality of stator slots according to the law of at least two slots for each pole phase group; the stator winding is composed of a clipping coil; part and welding part; the hairpin coil is embedded in the stator slot through its embedded part, and sixteen embedded parts are embedded in each stator slot; the bending direction of the bending part of the same hairpin coil is the same; the first in each stator slot The welding parts of the conductors of the first layer and the sixteenth layer are used as the lead-out end of a single wire; the welding parts of the conductors of the second layer to the fifteenth layer in the same stator slot form a group of two layers in ascending order, and the two layers in the same group Two adjacent welding parts are welded together; the bending parts of the sixteen-layer conductors in the same stator slot are formed into a group of two layers in ascending order, and the bending parts of two adjacent groups have opposite bending directions. The winding scheme can reduce the difficulty of bending the bending part of the multi-layer hairpin coil, reduce the size of the conductor and reduce the influence of the skin effect caused by the high-speed motor.

Description

technical field [0001] The invention relates to the technical field of new energy motors, in particular to a flat wire motor stator. Background technique [0002] Flat wire winding is a development direction of new energy vehicle drive motors, but as the motor speed increases, the disadvantages of flat wire become more obvious. At present, the size of the flat wire winding conductors of the card-issuing flat wire motors used in the market is generally large, which is not conducive to further speeding up the driving motor. If the size of the conductor is further reduced, the influence of the high-speed skin effect can be reduced, but the full rate of the copper slot will be reduced, and the process difficulty of winding manufacturing will be increased, and it is even difficult to realize the end twisting of the welding end of the flat wire winding. Contents of the invention [0003] The technical solution of the present invention is: a flat wire motor stator, including a s...

AI Technical Summary

Problems solved by technology

[0002] Flat wire winding is a development direction of drive motors for new energy vehicles, but as the motor speed increases, the disadvantages of flat wire become more obvious

At present, the size of the flat wire winding conductors of the card-issuing flat wire motors used in the market is generally large, which is not conducive to further high-speed drive motors.

If the size of the conductor is further reduced, the influence of the high-speed skin effect can be reduced, but the full rate of the copper slot will be reduced, and the process difficulty of winding manufacturing will be increased, and it is even difficult to realize the end twisting of the welding end of the flat wire winding

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