CN205051471U

CN205051471U - Brushless motor's stator winding connection structure

Info

Publication number: CN205051471U
Application number: CN201520697699.1U
Authority: CN
Inventors: 翁海林
Original assignee: Hubei Jinheli Electromechanical Technology Co Ltd
Current assignee: Hubei Jinheli Electromechanical Technology Co Ltd
Priority date: 2015-09-10
Filing date: 2015-09-10
Publication date: 2016-02-24
Anticipated expiration: 2025-09-10

Abstract

The utility model provides a brushless motor's stator winding connection structure, and belongs to the technical field of motor, stator winding is by the U phase winding, the V phase winding, the constitution is connected to the W phase winding, set gradually nine coils through nine rule grooves on the stator, each phase winding comprises the three winding connection of equidistance spaced, each phase winding of its characterized in that comprises the three coil parallel connection that it contained, the leading -out terminal of each coil in the same phase winding, difference line of each other constitutes the leading -out terminal of phase winding between the non - leading -out terminal, non - leading -out terminal, the U phase winding, the V phase winding, it constitutes the star connection structure to interconnect through non - leading -out terminal between the W phase winding, the design of this patent is novel, rational in infrastructure, and each phase winding constitutes by three coil is parallelly connected, and the electric current that passes through on each coil has only the third of phase electric current for the electric current that can bear the phase winding under the same condition has improved three times, and some low -voltages of specially adapted, heavy current concatenate the motor.

Description

A kind of stator winding syndeton of brushless electric machine

Technical field

The utility model belongs to technical field of motors, is specifically related to a kind of stator winding syndeton being specially adapted to low-voltage, big current brushless electric machine.

Background technology

Common brushless electric machine is 6P electricity substantially, motor stator winding adopts star connection, stator arranges in nine line embedding grooves in order to rabbet nine winding coils, nine coils of interlocking in stator nine line embedding grooves, three coils connected in series connections of equi-spaced apart form a phase winding, three coils connected in series tail points of three phase windings are interconnected, and three-phase windings is formed, and star is capable to be connect; Adopt this three coil tandems to form the winding coil syndeton of a phase winding, in real-world operation, each coil all passes through with phase current, is not suitable for big current motor, welding simultaneously between enamelled wire bothers relatively, joint volume after welding is large, and need excessive inner space, the total length of motor can increase, as for wash the direct current machine on equipment, general battery voltage 24VDC, the electric current of motor reaches 30A, need enamelled wire Double-wire parallel wound, wire gauge is very large.

Utility model content

The utility model aims to provide the technical scheme that a kind of phase winding is made up of three coils from parallel connection of coils, to improve the electric current of phase winding by ability to bear, overcomes problems of the prior art.

The stator winding syndeton of described a kind of brushless electric machine, stator winding is by U phase winding, V phase winding, W phase winding connects and composes, stator sets gradually nine coils by nine line embedding grooves, each phase winding is connected and composed by three coils of equi-spaced apart, it is characterized in that three coils from parallel connection of coils that each phase winding is comprised by it connect and compose, the leading-out terminal of each coil in same phase winding, between non-leading-out terminal, mutual line forms the leading-out terminal of phase winding respectively, non-leading-out terminal, U phase winding, V phase winding, be connected to each other by non-leading-out terminal between W phase winding and form Y-connection structure.

The stator winding syndeton of described a kind of brushless electric machine, it is characterized in that the non-leading-out terminal of the winding coil that described U phase winding, V phase winding, W phase winding comprise draws respectively and receive PCB terminal block, PCB terminal block comprises PCB substrate, PCB substrate is arranged circular conducting bar, conducting bar is equipped with nine wiring holes are corresponding with the non-leading-out terminal of nine winding coils to be connected.

The stator winding syndeton of described a kind of brushless electric machine, is characterized in that being welded and fixed between the non-leading-out terminal of described winding coil and wiring hole.

The stator winding syndeton of above-mentioned a kind of brushless electric machine, novel, rational in infrastructure, each phase winding is made up of three coils from parallel connection of coils, the electric current that each coil passes through only has 1/3rd of phase current, make at identical conditions the electric current that phase winding can bear to be improve three times, be specially adapted to some low-voltages, big current serial connection motor.

Accompanying drawing explanation

Fig. 1 is the utility model structural representation;

Fig. 2 is the structural representation of described PCB terminal block;

Fig. 3 is the syndeton schematic diagram of U phase winding;

Fig. 4 is the syndeton schematic diagram of prior art coil phase winding in series;

In figure: 1-PCB substrate, 2-wiring hole, 3-conducting bar.

Embodiment

Now in conjunction with Figure of description, describe embodiment of the present utility model in detail:

Fig. 1, Figure 2 shows that a kind of stator winding syndeton of brushless electric machine, stator winding is connected and composed by U phase winding, V phase winding, W phase winding, stator sets gradually nine coils by nine line embedding grooves, each phase winding is connected by three coils from parallel connection of coils of equi-spaced apart, between the leading-out terminal of same phase phase winding each coil interior, non-leading-out terminal, mutual line forms leading-out terminal, the non-leading-out terminal of phase winding respectively, is connected to each other forms Y-connection structure between U phase winding, V phase winding, W phase winding by non-leading-out terminal.Stator winding syndeton described in employing, there are three parallel branches in each phase winding, make at identical conditions the electric current that phase winding can bear to be improve three times, be specially adapted to low-voltage, big current serial connection motor, as being suitable for of mentioning in background technology wash the direct current machine on equipment, battery voltage 24VDC, the phase current of motor reaches 30A, enamelled wire Double-wire parallel wound is needed to cause wire gauge very large by the words of common connection, but adopt the stator winding syndeton of above-mentioned a kind of brushless electric machine, the electric current that single coil passes through only has 10A, single line just can meet, technique welding is also very convenient.

Above-described embodiment is applicable to low-voltage more, big current serial connection motor, therefore the wire diameter of the wire used of winding coil also can be thicker, in order to the non-leading-out terminal of nine coils is welded together securely, this patent adopts external PCB terminal block, this PCB terminal block can be screwed and be arranged on stator end, PCB terminal block comprises PCB substrate 1, PCB substrate 1 is arranged circular conducting bar 3, conducting bar 3 is equipped with nine wiring holes 2, be interconnected by conducting bar 3 between nine wiring holes 2, the non-leading-out terminal correspondence of nine winding coils is connected to 9 wiring holes 2, the non-leading-out terminal of each winding coil is interconnected by conducting bar 3, achieve U phase winding, V phase winding, the non-leading-out terminal of W phase winding winding is connected to each other, adopt between the non-leading-out terminal of each coil and wiring hole 2 simultaneously and be welded and fixed, in technique and convenient and be connected firmly.

Claims

1. the stator winding syndeton of a brushless electric machine, stator winding is by U phase winding, V phase winding, W phase winding connects and composes, stator sets gradually nine coils by nine line embedding grooves, each phase winding is connected and composed by three coils of equi-spaced apart, it is characterized in that three coils from parallel connection of coils that each phase winding is comprised by it connect and compose, the leading-out terminal of each coil in same phase winding, between non-leading-out terminal, mutual line forms the leading-out terminal of phase winding respectively, non-leading-out terminal, U phase winding, V phase winding, be connected to each other by non-leading-out terminal between W phase winding and form Y-connection structure.

2. the stator winding syndeton of a kind of brushless electric machine as claimed in claim 1, it is characterized in that the non-leading-out terminal of the winding coil that described U phase winding, V phase winding, W phase winding comprise draws respectively and receive PCB terminal block, PCB terminal block comprises PCB substrate (1), PCB substrate (1) is arranged circular conducting bar (3), conducting bar (3) is equipped with nine wiring holes (2) are corresponding with the non-leading-out terminal of nine winding coils to be connected.

3. the stator winding syndeton of a kind of brushless electric machine as claimed in claim 2, is characterized in that being welded and fixed between the non-leading-out terminal of described winding coil and wiring hole (2).