CN217307375U

CN217307375U - Double-circuit flat wire hairpin stator winding structure

Info

Publication number: CN217307375U
Application number: CN202220688992.1U
Authority: CN
Inventors: 余慧敏; 吕庆东; 徐运龙
Original assignee: Suzhou Find Stamping Machinery Technology Co ltd
Current assignee: Suzhou Find Stamping Machinery Technology Co ltd
Priority date: 2022-03-28
Filing date: 2022-03-28
Publication date: 2022-08-26
Anticipated expiration: 2032-03-28

Abstract

The utility model provides a double-circuit flat wire hairpin stator winding structure, including stator core, the wire casing, hairpin flat wire winding, every inslot all is provided with a plurality of lines layers, hairpin flat wire winding includes three-phase flat wire winding, three-phase flat wire winding all includes many flat copper lines, all line layers are along keeping away from stator core centre of a circle direction ascending order formula sequencing, be first line layer to eighth line layer in proper order, first line layer to eighth line in situ inlay and be equipped with many flat copper lines, welded connection between the many flat copper lines, U phase flat wire winding, W phase flat wire winding and V phase flat wire winding all include two branch roads, two branch road parallel connection. Through inserting flat copper wire in the wire casing to as an organic whole through welded connection, form the flat wire motor winding of two branches, the winding displacement distributes simply, need not use a large amount of busbar and busbar in order to connect branch road and the neutral point of each phase winding, and preparation simple process, low in production cost, machining efficiency is high, and the lead-out wire is concentrated, and it is more convenient to work a telephone switchboard.

Description

Double-circuit flat wire hairpin stator winding structure

Technical Field

The utility model relates to a double-circuit flat wire hairpin stator winding structure.

Background

With the development of electric vehicle technology, the performance requirements for the vehicle motor are higher and higher, and while the high slot filling rate, high power density and high torque density of the motor are continuously pursued, the circular wire motor is difficult to break through the bottleneck of the new performance requirements of the current driving motor. The appearance of the flat wire hairpin motor realizes the performance requirements which cannot be met by a round wire motor. The flat wire hairpin motor has high slot filling rate, high power density, good heat dissipation performance and NVH performance, can greatly reduce the height of the end part of a motor winding, reduces the copper consumption of the winding, and further improves the efficiency of the vehicle driving motor.

However, the flat wire motor windings with multiple parallel branches used in the prior art have many types of wire types, complex arrangement modes, unconcentrated outgoing lines, inconvenient wiring, need to use a large number of bus bars and bus bars to connect the branches and neutral points of the windings of each phase, complex manufacturing process, high production cost and low processing efficiency.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model is to provide a double-circuit flat line hairpin stator winding structure.

In order to solve the technical problem, the utility model discloses a technical scheme is: a double-path flat wire hairpin stator winding structure comprises a stator core, a plurality of wire slots arranged on a tooth part of the stator core, and hairpin flat wire windings embedded in the plurality of wire slots, wherein a plurality of wire layers are arranged in each wire slot, the hairpin flat wire winding comprises a U-phase flat wire winding, a W-phase flat wire winding and a V-phase flat wire winding, the U-phase flat wire winding, the W-phase flat wire winding and the V-phase flat wire winding all comprise a plurality of flat copper wires, all the wire layers are sequentially arranged in an ascending order along the direction away from the center of the stator core and sequentially comprise a first wire layer to an eighth wire layer, a plurality of flat copper wires are embedded in the first wire layer to the eighth wire layer and are connected by welding, the U-phase flat wire winding, the W-phase flat wire winding and the V-phase flat wire winding all comprise two branches, and the two branches are connected in parallel. Through inserting flat copper wire in the wire casing to as an organic whole through welded connection, form the flat wire motor winding of two branches, the winding displacement distributes simply, need not use a large amount of busbar and busbar in order to connect branch road and the neutral point of each phase winding, and preparation simple process, low in production cost, machining efficiency is high, and the lead-out wire is concentrated, and it is more convenient to work a telephone switchboard.

Preferably, the number of the wire grooves is 48, the number of the wire layers is 8, and the flat copper wires can be arranged across 4-6 wire grooves.

Preferably, two branches of any one of the U-phase, W-phase, and V-phase flat wire windings are inserted into two adjacent wire slots. The flat cable distribution is simpler, and the manufacturing process is simple.

Preferably, the vehicle-mounted power supply further comprises a connecting wire group which connects the N end of the U-phase flat wire winding, the N end of the W-phase flat wire winding and the N end of the V-phase flat wire winding.

Preferably, the flat copper wire is including inserting and locating two perpendicular copper lines in the wire casing, connecting in two the horizontal copper line on perpendicular copper line top, horizontal copper line bending upward sets up, the setting of staggering about the intermediate point of two halves part of horizontal copper line. The installation of next individual layer flat copper line is more convenient, and the installation is more convenient, improves machining efficiency.

Preferably, the bottom ends of the two vertical copper wires can be bent outwards. Convenient follow-up mould an organic whole of adopting is buckled, makes things convenient for the welding, simple to operate raises the efficiency.

Because of the application of the technical scheme, compared with the prior art, the utility model has the following advantages:

1. the flat copper wire is inserted into the wire slot and is connected into a whole by welding to form the flat wire motor winding with double branches, the flat wire distribution is simple, a large number of bus bars and bus bars are not needed to be used for connecting the branches and neutral points of the windings of each phase, the manufacturing process is simple, the production cost is low, the processing efficiency is high, the outgoing wires are concentrated, and the wiring is more convenient;

2. two branches of any one of the U-phase flat wire winding, the W-phase flat wire winding and the V-phase flat wire winding are inserted into two adjacent wire slots, so that the wire arrangement distribution is simpler, and the manufacturing process is simple;

3. the bottom of two perpendicular copper lines of flat copper line can outwards buckle's setting, and convenient follow-up adoption mould is integrative to buckle, convenient welding, simple to operate raises the efficiency.

Drawings

Fig. 1 is a schematic diagram of the winding of the present invention;

FIG. 2 is a schematic diagram of a three-phase winding separation;

FIG. 3 is a schematic view of a flat copper wire structure;

FIG. 4 is a schematic view of the distribution of wire slots;

FIG. 5 is an enlarged top view of the stator core;

wherein 1, stator iron core; 2. a wire slot; 3. hairpin flat wire windings; 4. flat copper wire; 41. a vertical copper wire; 42. a transverse copper wire; 5. and connecting the wire sets.

Detailed Description

As shown in each figure, double-circuit flat wire hairpin stator winding structure, including stator core 1, 48 setings up in the wire casing 2 on 1 tooth of stator core, inlay the hairpin flat wire winding 3 of locating in a plurality of wire casings 2, all be provided with eight line layers 21 in every wire casing 2, hairpin flat wire winding 3 includes U looks flat wire winding, W looks flat wire winding and V looks flat wire winding, U looks flat wire winding, W looks flat wire winding and V looks flat wire winding all include many flat copper wires 4, all ascending preface type sequences along keeping away from 1 centre of a circle direction of stator core, be first line layer to eighth line layer in proper order, first line layer to eighth line in situ inlay and be equipped with many flat copper wires 4, welded connection between many flat copper wires 4, U looks flat wire winding, W looks flat wire winding and V looks flat wire winding all include two branches, two branch road parallel connection.

The utility model discloses an insert the flat type copper line in the wire casing to as an organic whole through welded connection, form the flat type wire motor winding of two branch roads, the winding displacement distributes simply, need not use branch road and the neutral point of a large amount of busbar and busbar in order to connect each phase winding, and preparation simple process, low in production cost, machining efficiency is high, and the lead-out wire is concentrated, and it is more convenient to work a telephone switchboard.

As shown in fig. 4, there are 48 wire slots 2 and 8 wire layers, and the flat copper wire 4 can be disposed across 4-6 wire slots 2.

Two branches of any one of the U-phase flat wire winding, the W-phase flat wire winding and the V-phase flat wire winding are inserted into two adjacent wire slots, so that the wire arrangement distribution is simpler, and the manufacturing process is simple.

As shown in fig. 2, the two-way flat wire hairpin stator winding structure further includes a connection wire group 5 connecting the N end of the U-phase flat wire winding, the N end of the W-phase flat wire winding, and the N end of the V-phase flat wire winding.

Flat copper line 4 is including inserting two vertical copper lines 41 of locating in wire casing 2, connecting in the horizontal copper line 42 on two vertical copper line 41 tops, and horizontal copper line 42 is the setting of buckling upwards, and the setting that can stagger about the intermediate point of two halves of horizontal copper line 42, the setting that can outwards buckle in the bottom of two vertical copper lines of flat copper line, convenient follow-up mould an organic whole of adopting buckles, convenient to weld, simple to operate improves efficiency.

As shown in fig. 4 and 5, one of the 48 wire slots 2 on the stator core 1 is set as a sequence 1, the 48 wire slots 2 are sequentially set with serial numbers clockwise, the sequence 48 is adjacent to the sequence 1, a wire layer closest to the center of the stator core 1 in the wire slots 2 is set as a first wire layer, the number of the wire layers is sequentially set radially outwards, and the outermost layer is an eighth wire layer.

The first embodiment is as follows: as shown in fig. 1-2, inserting the vertical copper wires of the flat copper wires of the U-phase flat wire winding into the first wire layer of the sequence 1, inserting the other vertical copper wire into the first wire layer of the sequence 8 across 6 wire slots, inserting the vertical copper wires of the next three flat copper wires into the second, fourth and sixth wire layers of the sequence 1, inserting the other vertical copper wire into the third, fifth and seventh wire layers of the sequence 7 across 5 wire slots, and inserting the next winding from the sequence 7 in a circulating manner to complete the winding of the first branch of the U-phase flat wire winding; inserting a vertical copper wire of a first flat copper wire of a second branch of the U-phase flat wire winding into a first wire layer of the sequence 2, inserting another vertical copper wire into a first wire slot of the sequence 7 by crossing 4 wire slots, inserting the next vertical copper wires of the three flat copper wires into second, fourth and sixth wire layers of the sequence 2, inserting the next windings of third, fifth and seventh wire layers of the sequence 8 by crossing 5 wire slots, and circularly inserting the next windings from the sequence 8 to finish the winding of the second branch of the U-phase flat wire winding; the other two-phase flat wire winding and the U-phase winding are different in starting sequence and the others are consistent.

The above embodiments are only for illustrating the technical concept and features of the present invention, and the purpose of the embodiments is to enable people skilled in the art to understand the contents of the present invention and to implement the present invention, which cannot limit the protection scope of the present invention. All equivalent changes and modifications made according to the spirit of the present invention should be covered by the protection scope of the present invention.

Claims

1. The utility model provides a double-circuit flat line hairpin stator winding structure which characterized in that: the wire distribution device comprises a stator core (1), a plurality of wire grooves (2) arranged on a tooth part of the stator core (1), and a plurality of hairpin flat wire windings (3) embedded in the wire grooves (2), wherein each wire groove (2) is internally provided with a plurality of wire layers (21), each hairpin flat wire winding (3) comprises a U-phase flat wire winding, a W-phase flat wire winding and a V-phase flat wire winding, the U-phase flat wire windings, the W-phase flat wire windings and the V-phase flat wire windings all comprise a plurality of flat copper wires (4), all the wire layers are sorted in an ascending order along the direction away from the circle center of the stator core (1) and sequentially from a first wire layer to an eighth wire layer, a plurality of copper wires (4) are embedded in the first wire layer to the eighth wire layers, the flat copper wires (4) are connected in a welding manner, and the U-phase flat wire windings, the W-phase flat wire windings and the V-phase flat wire windings all comprise two branch circuits, the two branches are connected in parallel.

2. The two-way flat wire hairpin stator winding structure of claim 1, characterized in that: the number of the wire grooves (2) is 48, the number of the wire layers is 8, and the flat copper wires (4) can cross 4-6 wire grooves (2).

3. The dual-path flat wire hairpin stator winding structure of claim 2 wherein: the two branch circuits of any one of the U-phase flat wire winding, the W-phase flat wire winding and the V-phase flat wire winding are inserted into the two adjacent wire slots.

4. The two-way flat wire hairpin stator winding structure of claim 1, characterized in that: the transformer further comprises a connecting wire group (5) which connects the N end of the U-phase flat wire winding, the N end of the W-phase flat wire winding and the N end of the V-phase flat wire winding.

5. The dual-path flat wire hairpin stator winding structure of claim 4 wherein: flat copper line (4) are including inserting and locating two vertical copper lines (41), the connection in wire casing (2) are in two horizontal copper line (42) on vertical copper line (41) top, horizontal copper line (42) are the setting of buckling upwards, the setting of staggering about the intermediate point of two halves part of horizontal copper line (42).

6. The dual-path flat wire hairpin stator winding structure of claim 5 wherein: the bottom ends of the two vertical copper wires (41) can be bent outwards.