CN214707391U

CN214707391U - Stator winding outlet structure

Info

Publication number: CN214707391U
Application number: CN202120905321.1U
Authority: CN
Inventors: 张大璐; 杜斌; 杨家勇; 马俊; 王震
Original assignee: Amerco Anhui Automobile Electric Drive Co ltd
Current assignee: Amerco Anhui Automobile Electric Drive Co ltd
Priority date: 2021-04-28
Filing date: 2021-04-28
Publication date: 2021-11-12
Anticipated expiration: 2031-04-28

Abstract

The utility model discloses a stator winding outlet structure, include: the stator, the one end of stator is equipped with and is used for external motor U looks leading-out terminal copper bar, motor V looks leading-out terminal copper bar, motor W looks leading-out terminal copper bar, motor U looks star point leading-out terminal copper bar, motor V looks star point leading-out terminal copper bar and motor W looks star point leading-out terminal copper bar. The utility model has the advantages that the star point connection external structure arrangement is beneficial to the space size and the heat dissipation of the stator, and the special star point connection collecting ring structure is not required to be developed, thereby not only saving the space, but also greatly reducing the cost; only resistance welding is needed, and related processes such as coating and the like are not needed, so that the process is simplified. Meanwhile, the ECU is conveniently and externally connected, the connection and disconnection of three-phase star points of the motor are controlled by the ECU, and when one phase of the motor is damaged, the motor can be ensured not to be used continuously, which is particularly important in an automobile power-assisted steering motor.

Description

Stator winding outlet structure

Technical Field

The utility model relates to the technical field of electric machines, especially, relate to a stator winding outlet structure.

Background

The current motor design has higher and higher integration requirements on the motor, and the space size for the structural design of the motor is more and more limited. On the other hand, for a star-connected three-phase motor, the process and the fixed structure of star point connection not only occupy a large design space, but also increase a large cost.

SUMMERY OF THE UTILITY MODEL

For the technical problem who exists among the solution background art, the utility model provides a stator winding outlet structure.

The utility model provides a stator winding outlet structure, include: the stator, the one end of stator is equipped with and is used for external motor U looks leading-out terminal copper bar, motor V looks leading-out terminal copper bar, motor W looks leading-out terminal copper bar, motor U looks star point leading-out terminal copper bar, motor V looks star point leading-out terminal copper bar and motor W looks star point leading-out terminal copper bar.

Preferably, the stator includes iron core, stator core injection molding, a plurality of coil and a plurality of overline seat, wherein: the stator core and the stator core injection molding piece form a whole in an injection molding mode, the stator core is provided with a plurality of stator teeth, and each coil forms a stator winding on each stator tooth through winding; a plurality of wire spanning seats are fixed at one end of the stator core; one end of the motor U-phase lead-out end copper bar, the motor V-phase lead-out end copper bar, the motor W-phase lead-out end copper bar, the motor U-phase star point lead-out end copper bar, the motor V-phase star point lead-out end copper bar and the motor W-phase star point lead-out end copper bar are respectively connected into the corresponding coils.

In the utility model, the motor star point is externally connected; and the three-phase leading-out structure of the stator is changed into a six-position structure. This structural arrangement has the following advantages:

1. the star point connection does not need to be connected in the stator, and is beneficial to the space size and the heat dissipation of the stator;

2. a special collecting ring structure for star point connection is not required to be developed, so that the space is saved, and the cost is greatly reduced;

3. only resistance welding is needed, and related processes such as coating and the like are not needed, so that the process is simplified;

4. the star point connection is arranged externally, so that the star point of the motor can be connected with the ECU by using a plug-in unit outside the motor, and the connection and disconnection of the star point are controlled by the ECU, so that even if one phase of the motor is damaged, the ECU can control other two phases to be connected, the motor can work without interruption, and the power-assisted steering motor is particularly important.

Drawings

Fig. 1 is a schematic structural diagram of a stator winding outlet structure provided by the utility model;

fig. 2 is a schematic structural diagram of the stator in a stator winding outlet structure provided by the utility model;

fig. 3 is a schematic structural diagram of the stator core in the stator winding outgoing line structure provided by the utility model;

fig. 4 is a schematic view of a connection mode of the leading-out end copper bar in the stator winding outgoing line structure provided by the utility model.

Detailed Description

The technical solution of the present invention will be described in detail by the following embodiments.

As shown in fig. 1-4, fig. 1 is a schematic structural diagram of a stator winding outlet structure provided by the utility model; fig. 2 is a schematic structural diagram of the stator in a stator winding outlet structure provided by the utility model;

Referring to fig. 1, the utility model provides a stator winding outlet structure, include: the stator, the one end of stator is equipped with and is used for external motor U looks leading-out terminal copper bar 3, motor V looks leading-out terminal copper bar 4, motor W looks leading-out terminal copper bar 5, motor U looks star point leading-out terminal copper bar 6, motor V looks star point leading-out terminal copper bar 7 and motor W looks star point leading-out terminal copper bar 8.

In addition, in this embodiment, the stator includes iron core 1, stator core injection molding 2, a plurality of coil 9 and overline seat 10, wherein: the stator core 1 and the stator core injection molding piece 2 form a whole in an injection molding mode, the stator core 1 is provided with a plurality of stator teeth, and each coil 9 forms a stator winding on each stator tooth through winding; the crossover seat 10 is fixed at one end of the stator core 1; one end of a motor U-phase lead-out end copper bar 3, a motor V-phase lead-out end copper bar 4, a motor W-phase lead-out end copper bar 5, a motor U-phase star point lead-out end copper bar 6, a motor V-phase star point lead-out end copper bar 7 and a motor W-phase star point lead-out end copper bar 8 are respectively connected into corresponding coils 9.

Referring to fig. 2, the number of stator cores 1 is 2; 2 stator core 1 forms by stator core injection molding 2 and connects and form overall structure.

Referring to fig. 3, the stator teeth include a first stator tooth 11, a second stator tooth 12, a third stator tooth 13, a fourth stator tooth 14, a fifth stator tooth 15, a sixth stator tooth 16, a seventh stator tooth 17, an eighth stator tooth 18, a ninth stator tooth 19, a tenth stator tooth 110, an eleventh stator tooth 111, and a twelfth stator tooth 112, which are sequentially arranged in the circumferential direction. Among the coils 9, the first coil 9 winds on the first stator tooth 11, one end of a thread end stays on the first stator tooth 11, and the other end of the thread end crosses 5 stator teeth through a thread crossing seat 10 on the other end of the stator iron core 1 and stays on a seventh stator tooth 17; by analogy, the thread end of one end of the second coil 9 stays on the second stator tooth 12, and the other end stays on the eighth stator tooth 18; the thread end of one end of the third coil 9 is stopped on the third stator tooth 13, and the thread end of the other end of the third coil is stopped on the ninth stator tooth 19; the thread end of one end of the fourth coil 9 stays on the fourth stator tooth 14, and the thread end of the other end stays on the tenth stator tooth 110; one end of the fifth coil 9 stays on the fifth stator tooth 15, and the other end stays on the eleventh stator tooth 111; the thread end of one end of the sixth coil 9 stays on the sixth stator tooth 16, and the thread end of the other end stays on the twelfth stator tooth 112; this forms the ends of 12 coils 9 on the stator core 1.

Referring to fig. 4, the wire ends of the coils 9 on the first stator tooth 11 and the second stator tooth 12 are connected by welding through the motor U-phase leading-out end copper bar 3, the wire ends of the coils 9 on the third stator tooth 13 and the fourth stator tooth 14 are connected by welding through the motor V-phase leading-out end copper bar 4, and the wire ends of the coils 9 on the fifth stator tooth 15 and the sixth stator tooth 16 are connected by welding through the motor W-phase leading-out end copper bar 5, so that the motor three-phase port with double parallel teeth is led out; the wire ends of the other ends of the coils 9 on the seventh stator tooth 17 and the eighth stator tooth 18 are connected by welding through a motor U-phase star point leading-out end copper bar 6, the wire ends of the other ends of the coils 9 on the ninth stator tooth 19 and the tenth stator tooth 110 are connected by welding through a motor V-phase star point leading-out end copper bar 7, and the wire ends of the other ends of the coils 9 on the eleventh stator tooth 111 and the twelfth stator tooth 112 are connected by welding through a motor W-phase star point leading-out end copper bar 8, so that double-tooth parallel-wound motor three-phase star point ports are led out.

According to the above, the utility model discloses connect external structure setting with the star point, all useful department with the heat dissipation to the space size of stator, it is too big to have solved traditional stator winding tip size, and the temperature of star point department is on the high side, and the heat dissipation that is unfavorable for the stator is the problem. And a special collecting ring structure for star point connection is not required to be developed, so that the space is saved, and the cost is greatly reduced; only resistance welding is needed, and related processes such as coating and the like are not needed, so that the process is simplified. Meanwhile, the ECU is conveniently and externally connected, the connection and disconnection of three-phase star points of the motor are controlled by the ECU, and when one phase of the motor is damaged, the motor can be ensured not to be used continuously, which is particularly important in an automobile power-assisted steering motor.

The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.

Claims

1. A stator winding outlet structure, comprising: the stator, the one end of stator is equipped with and is used for external motor U to draw out end copper bar (3), motor V to draw out end copper bar (4), motor W to draw out end copper bar (5), motor U looks star point to draw out end copper bar (6), motor V looks star point to draw out end copper bar (7) and motor W looks star point to draw out end copper bar (8) mutually.

2. The stator winding outlet structure according to claim 1, wherein the stator comprises a core (1), a stator core injection molded part (2), a plurality of coils (9) and a jumper base (10), wherein: the stator core (1) and the stator core injection molding piece (2) form a whole in an injection molding mode, the stator core (1) is provided with a plurality of stator teeth, and each coil (9) forms a stator winding on each stator tooth through winding; the crossover wire seat (10) is fixed at one end of the stator core (1); one end of a motor U-phase lead-out end copper bar (3), a motor V-phase lead-out end copper bar (4), a motor W-phase lead-out end copper bar (5), a motor U-phase star point lead-out end copper bar (6), a motor V-phase star point lead-out end copper bar (7) and a motor W-phase star point lead-out end copper bar (8) are respectively connected into corresponding coils (9).