For the slot insulation structure and its manufacturing method of motor, application method
Technical field
The present invention relates to electric machine structure fields, more particularly to a kind of slot insulation structure for motor and its manufacturer
Method, application method.
Background technique
In the insulation system of motor stator, slot insulation winding is separated with iron core, is played and is reinforced the pressure-resistant water of winding over the ground
Flat effect, slot insulation are indispensable in machine winding.The composite-insulating paper that slot insulation general at present uses, absolutely with two layers
One layer of insulating film (such as polyimide film) of edge folder is combined.Common composite-insulating paper thickness has 0.1,0.15,0.2,
0.25, several thickness such as 0.3mm, wherein play primary insulation is insulating film, but its thickness has 0.025,0.05mm etc. several
Kind thickness, insulator film thickness account for the 15-30% of entire composite-insulating paper thickness.As depicted in figs. 1 and 2, existing flat wire winding
The slot insulation structure of motor is generally adopted by " B " shape or serpentine slot insulation, for separating two layers of conductor.Regardless of using
" B " shape or serpentine slot insulation are required by cutting a sheet of paper, die mould, folding, hot-forming, insertion stator slot etc. more to process,
Process is very complicated, or even needs special equipment to guarantee molding effect, no matter from processing complexity or equipment investment angle
For degree, it can all increase the cost of manufacture of motor.
Summary of the invention
It is an object of the invention to overcome at least one defect of existing motor, a kind of slot insulation knot for motor is provided
Structure and its manufacturing method, application method, greatly simplify the manufacture craft of slot insulation, reduce the manufacturing cost of motor, moreover it is possible to
The copper factor for improving winding, further increases the power density of motor.
It on the one hand, is by ribbon insulation system with even the invention proposes a kind of slot insulation structure for motor
The mode of continuous spiral wind made of, cylindrical seal;And
The ribbon insulation system is fabricated from a flexible material, so that the cross section Internal periphery of the seal is with insertion
The cross section outer profile of conductor in it and change.
Further, the ribbon insulation system is stripped insulating paper.
Further, the insulating paper includes one layer of paper and one layer of insulating film for being set to the paper side.
Further, the insulating paper includes two layers of paper and one layer of insulating film being set between two layers of the paper.
Further, the insulating film is polyimide film.
Further, it during the ribbon insulation system is wound, is fixed by splicing or welding manner
Molding.
On the other hand, the invention also provides a kind of manufacturing methods for any of the above-described slot insulation structure, comprising:
Make ribbon insulation system;
The ribbon insulation system is wound in a manner of continuous helical on an auxiliary cylindrical structure;
The auxiliary cylindrical structure is removed, the cylindrical slot insulation structure is obtained.
Further, manufacturing method further includes during ribbon insulation system winding, by being glued or welding
Molding is fixed in the mode of connecing.
Further, manufacturing method further include according to the outer perimeter of packet conductor choose the auxiliary cylindrical structure.
Further, manufacturing method further includes that the slot insulation structure is truncated according to the length of the stator slot of motor.
Another aspect, the invention also provides a kind of application methods of slot insulation structure comprising:
It will be in the stator slot of one or more slot insulation structure insertion motors;
One or more conductors are inserted into each slot insulation structure.
Further, each conductor includes conductive part and the insulating layer that is set in the peripheral wall surfaces of the conductive part.
In slot insulation structure of the invention, production method and application method, since insulation tube is made by the way of winding,
Greatly simplify the manufacture craft of slot insulation, when use can first install insulation tube, conductor is inserted into afterwards, without by insulation tube and leading
System is made integral component, reduces the manufacturing cost of motor, moreover it is possible to which the copper factor for improving conductor further increases the power of motor
Density.
Further, due in slot insulation structure insulating paper may include one layer of one tunic of paper, done according to folded packet mode is wound
Out, different packet stack rates can be set according to different voltages demand, actually have multilayer insulation paper on thickness, but can control reality
Border insulation thickness is essentially identical compared with traditional approach, but since the insulating film number of plies for playing primary insulation is actually increased
Add, insulation performance can greatly enhance.
Further, slot insulation structure of the invention can simplify the system of slot insulation under the premise of guaranteeing insulation performance
Process is made, also can be reduced the insulation number of plies in groove depth direction in certain special cases, further promotes the power density of motor.
Further, slot insulation structure of the invention, production method and application method may make in conductor and insulation control
When making, be fabricated separately, do not have to when make conductor, at the same will on the outside of conductor profiled insulation pipe, when the motor manufacturing that can make, divide
Definitely, production more refines work, saves significantly on cost.
According to the following detailed description of specific embodiments of the present invention in conjunction with the accompanying drawings, those skilled in the art will be brighter
The above and other objects, advantages and features of the present invention.
Detailed description of the invention
Some specific embodiments of the present invention is described in detail by way of example and not limitation with reference to the accompanying drawings hereinafter.
Identical appended drawing reference denotes same or similar part or part in attached drawing.It should be appreciated by those skilled in the art that these
What attached drawing was not necessarily drawn to scale.In attached drawing:
Fig. 1 is a kind of schematic sectional view of the slot insulation structure of existing motor;
Fig. 2 is the schematic sectional view of the slot insulation structure of existing another motor;
Fig. 3 is the schematic sectional view of slot insulation structure according to an embodiment of the invention;
Fig. 4 is the schematic diagram of the manufacture of slot insulation structure shown in Fig. 3;
Fig. 5 is a kind of schematic diagram of application of slot insulation structure shown in Fig. 3;
Fig. 6 is the schematic diagram of another application of slot insulation structure shown in Fig. 3;
Fig. 7 is the schematic diagram of another application of slot insulation structure shown in Fig. 3.
Specific embodiment
Fig. 3 is the schematic sectional view of slot insulation structure 10 according to an embodiment of the invention.As shown in Figure 3 and refer to
Fig. 4 to Fig. 7, the embodiment of the invention provides a kind of slot insulation structures 10 for motor.The slot insulation structure 10 can be for by item
Strip insulation structure 11 wound in a manner of continuous helical made of, cylindrical seal.Moreover, ribbon insulation knot
Structure 11 is fabricated from a flexible material so that the cross section Internal periphery of seal be inserted into its in conductor cross section outer profile and
Change.Ribbon insulation system 11 winds also referred to as folded packet mode in a manner of continuous helical, that is to say, that part band
Shape insulation system 11 can be at the outside of winding part, the inside after unwound part winding.Further, in band
During shape insulation system 11 is wound, molding is fixed by splicing or welding manner.Specifically, it insulate and ties in ribbon
The edge cementing of structure 11, or formed the slot insulation structure 10 of motor using the particular form such as ultrasonic bonding.
In some embodiments of the invention, ribbon insulation system 11 is stripped insulating paper.Preferably, it insulate
Paper includes one layer of paper and one layer of insulating film for being set to paper side, i.e. insulating paper can be two layer composite structure.According to the folded packet of winding
Mode is worked it out, and different packet stack rates can be arranged according to different voltages demand, actually there is multilayer insulation paper on thickness, but can be with
It is essentially identical compared with traditional approach to control actual insulation thickness, but has since the insulating film number of plies for playing primary insulation is practical
Increased, insulation performance can greatly enhance.In some alternative embodiments of the invention, insulating paper includes two layers of paper and setting
One layer of insulating film between two layers of paper.Further, insulating film is polyimide film.
The embodiment of the invention also provides a kind of manufacturing methods for the slot insulation structure 10 in any of the above-described embodiment.
As shown in figure 4, the manufacturing method can include:
Make ribbon insulation system 11.Specifically, insulating paper can be cut in elongate strip.
One auxiliary cylindrical structure 20 in a manner of continuous helical wound strips shape insulation system 11.Further, may be used
According to packet conductor 40 outer perimeter choose auxiliary cylindrical structure 20.During ribbon insulation system 11 is wound, pass through
It is glued or molding is fixed in welding manner.Assisting cylindrical structure 20 can be pole etc..
Removal auxiliary cylindrical structure 20, obtains cylindrical slot insulation structure 10.Further, can be determined according to motor
Slot insulation structure 10 is truncated in the length of pilot trench 30.
In some further embodiments of the invention, as shown in figure 5, before making stator flat wire winding plug wire, only
Suitable length under molding slot insulation structure 10 sanction need to be inserted into stator slot 30 length as desired, conductor insertion
Afterwards, slot insulation structure 10 is insulation tube, the shape of conductor 40 can be followed automatically to form in stator slot 30.It is made in such a way
Slot insulation structure 10 " O " shape or " mouth " shape slot insulation structure 10 can be named as to it, using this slot insulation structure 10
The process flow for greatly simplifying the insulation of stator slot 30, is very suitable to large batch of production.
Further, in some designs, as shown in fig. 6, can be inserted into multiple any of the above-described implementations in each stator slot 30
Slot insulation structure 10 in example, each slot insulation structure 10 is interior to be inserted into conductor 40, so that insertion multilayer is led in each stator slot 30
Body 40 or multiphase conductor 40.
Preferably, each conductor 40 includes conductive part and the insulating layer being set in the peripheral wall surfaces of conductive part.Conductive part can
For round or square lead.Slot insulation structure 10 is to prevent between (different phases/same to phase) conductor since machining causes absolutely
Edge layer is destroyed and the two electric current is made to communicate special increased supplementary insulation;Optionally, slot insulation structure 10 also can avoid due to leading
Body is damaged and stator core is charged and increased insulation system.
Further, in some designs, as shown in fig. 7, two or more layers conductor 40 belongs to same phase, using reliable
Under the premise of electromagnetic wire, with increase extra insulation is not needed between phase conductor 40, the insulation of electromagnetic wire itself is fully able to meet
Insulation performance requirement.At this point, bilayer or multilayer conductor 40 only needs to cover " O " shape insulation tube, improved compared with traditional approach
Copper factor, can further promote the power density of motor.That is, slot insulation structure 10 of the invention can guarantee
Under the premise of insulation performance, simplifies the manufacturing process of slot insulation, also can be reduced the exhausted of groove depth direction in certain special cases
Edge layer number further promotes the power density of motor.
To sum up, the invention also provides a kind of application methods of slot insulation structure 10 comprising:
It will be in the stator slot of one or more slot insulation structures 10 insertion motor;
One or more conductors 40 are inserted into each slot insulation structure 10.
So far, although those skilled in the art will appreciate that present invention has been shown and described in detail herein multiple shows
Example property embodiment still without departing from the spirit and scope of the present invention, still can according to the present disclosure directly
Determine or deduce out many other variations or modifications consistent with the principles of the invention.Therefore, the scope of the present invention is understood that and recognizes
It is set to and covers all such other variations or modifications.