CN109861427A - A kind of high power density disc type motor winding construction and its bending preparation method - Google Patents
A kind of high power density disc type motor winding construction and its bending preparation method Download PDFInfo
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- CN109861427A CN109861427A CN201910173121.9A CN201910173121A CN109861427A CN 109861427 A CN109861427 A CN 109861427A CN 201910173121 A CN201910173121 A CN 201910173121A CN 109861427 A CN109861427 A CN 109861427A
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Abstract
It the present invention relates to a kind of high power density disc type motor winding construction and its bending preparation method, is embedded in iron core slot in the way of short distance or whole square including the identical coil spring part of multiple structures, or separately as iron-core-free winding straight forming；Each coil spring part is superimposed several layers by the similar coil component of multiple shapes from inside to outside and constitutes, and coil component carries out bending according to preferred bending angle and radius bend by the coil plane part gone out on one piece of copper sheet or wire cutting goes out in opposite direction and formed.The present invention provides high power density disc type motor winding construction, so that copper factor is higher, air gap flatness is more preferable, internal diameter gap utilization rate is higher, the design and processing for high power density are then very useful；And this winding construction is capable of providing more set of modules coil components, is convenient for motor manufacturing, to reduce manufacturing cost, reduces foozle incidence.
Description
Technical field
The present invention relates to winding and coil component brake techniques field more particularly to a kind of high power density disc type motor around
Group structure and its bending preparation method.
Background technique
Since axial dimension is short, compact-sized, radiating condition is good etc., many advantages become current Gao Gong to disk rotary motor
The important trend of rate density electrical machine development.Such as there are these disk rotary motors stator and rotor two parts to constitute, stator with
Rotor is all in dish configuration, and air gap between the two is the plane vertical with machine shaft.Improve the copper factor and nothing of machine winding
Core design is all to improve the effective way of power of motor density, but the use of both modes will affect the smooth of entire winding
Degree, then influences the uniformity of gas gap plane, thus high power density and the two indexs of high-performance motor design and add
It is often to be difficult to take into account in terms of work.The difference of the especially winding of disc type electric machine, winding inner diameter and outer diameter is bigger, makes
It is more at the winding free time at outer diameter, and inner radius winding winding displacement space is nervous, and end space is caused to be critical, each coil is in end
Arrangement is laminated mutually, the risk of short circuit there are insulation breakdown, such as patent No. CN108768033A and CN108015119A are public
The design and processing method for the flat type copper wire form-wound coils opened, which are applied, all has similar problems in this disc-like type machine winding.
In addition, the patent No. CN101490933B and US2012/0217836A1 disclose a kind of structure shape of hairpin-type winding
U-shaped conductor is inserted into again to be bent end after wire casing and weld by formula.Copper factor and overall stiffness, but its can be improved in such winding
Winding construction is influenced by technique, can only do wave winding, and the end shaping unit tooling head before welding is complicated, automatic processing
It is difficult.It is more demanding to electromotive force and magnetomotive force especially for the motor having, need the mode spirit by using lap winding
Selection pitch living, or need to shorten by the short-chorded coil of lap winding the occasion of end, such winding is difficult to cope with.
Summary of the invention
The purpose of the present invention is to provide a kind of high power density disc type motor winding construction and its bending preparation method, with
Solve above-mentioned technical problem, to achieve the above object the invention adopts the following technical scheme:
A kind of high power density disc type motor winding construction, including the identical coil spring part of multiple structures according to short distance or
The mode of whole square is embedded in iron core slot, or separately as iron-core-free winding straight forming；Each coil spring part is by multiple shapes
Similar coil component is superimposed several layers of composition from inside to outside, and the coil component is by the line gone out on one piece of copper sheet or wire cutting goes out
Circle planar member carries out bending according to preferred bending angle and radius bend in opposite direction and is formed.
As a further solution of the present invention, the coil spring part carries out insulating layer plated film by way of spring elongation
It handles, has n circle copper strap wire radially superposed in each coil side of the coil spring part, n-1 axial ventilation road can be obtained.
Reduce the risk that insulation breakdown during coil molding causes electric motor short circuit.In particular, every layer line in above-mentioned coil spring part
Enclose part between there are axial ducts, effective solution is provided for the high temperature problem certainly existed in high power density motor
Certainly approach, so that further increasing motor because higher electricity is close to have good cooling duct with high temperature caused by flux density
Power density.
As a further solution of the present invention, the number of the coil plane part is true by the number of turns in design of electrical motor scheme
Fixed, the size of coil plane part determines jointly according to the area and length of motor inserting-coil slot, and the coil plane part is according to preferably
Bending angle and radius bend carry out bending in opposite direction, can get coil component, by multiple coil components by inside
To outside intussusception, a few may make up coil spring part, and the end face of adjacent windings part is electrically connected using laser welding.
As a further solution of the present invention, the outer rim shape of the coil spring part is fan-shaped, the round, square with chamfering
Any shape in shape or ellipse.
As a further solution of the present invention, after the coil rolling piece is arranged by design requirement, using copper conductor
Or the exit of each phase adjacent windings spring part is electrically connected by copper strips according to design requirement is welded.
As a further solution of the present invention, two coil sides of the coil rolling piece are arranged in the state of upper and lower level
In two slots, no overlap phenomenon.
A kind of bending preparation method of high power density disc type motor winding construction, includes the following steps: the coil
Planar member carries out bending according to preferred bending angle and radius bend in opposite direction, can get coil component；It will be multiple
By inside to outside intussusception, a few may make up coil spring part to coil component, and laser welding can be used in the end face of adjacent windings part
It is electrically connected；Then by coil spring part according to design of electrical motor scheme by short distance or it is whole be embedded in iron core slot away from a manner of,
For iron-core-free winding then straight forming；The leading-out end of the coil spring is then constituted into machine winding knot through copper wire welding
Structure.Entire coil is formed by planar member bending, it is easy to accomplish coil manufactures mechanization, improves production efficiency.Coil spring part
Two coil sides be arranged in two slots naturally with the state of upper and lower level, be particularly suitable for single layer chain type winding, single or double layer
The pattern of lap winding.
Compared with prior art, the invention has the following advantages that the present invention provides high power density disc type motor winding knot
The structure of design to(for) high power density and adds so that copper factor is higher, air gap flatness is more preferable, internal diameter gap utilization rate is higher
Work is then very useful；And this winding construction is capable of providing more set of modules coil components, is convenient for motor manufacturing, to reduce
Manufacturing cost reduces foozle incidence.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of single layer chain type winding embodiment according to the present invention；
Fig. 2 is to be made of the bending schematic diagram of coil component coil plane part in the present invention (wherein a, b, c, d, e are respectively
Coil component bending schematic diagram from inside to outside)；
The heat dissipation effect figure of Fig. 3 coil spring part to illustrate the invention (wherein a is side view, b is isometric side view)；
Fig. 4 is the structural schematic diagram of the double-deck stacked winding embodiment according to the present invention；
Fig. 5 is the slot inner conductor distribution map of the double-deck stacked winding embodiment according to the present invention.
In figure: 1 coil spring part, 2 coil plane parts, (2A, 2B, 2C, 2D, 2E) are coil component, 3 machine winding knots
Structure.
Specific embodiment
The present invention is further elaborated in the following with reference to the drawings and specific embodiments.
Embodiment 1
Fig. 1 is the schematic diagram of single layer chain type winding construction according to an embodiment of the invention.The winding construction 3 may include
Multiple coil spring parts 1.Under normal circumstances, winding is three-phase windings, such as U phase, V phase and W phase.Every phase winding equal turn numbers,
Resistance is equal, and 120 ° of spatial distribution mutual deviation.When winding is more sets or multiple branch circuit, can be used in parallel or series between them
Structure situation connects.
In this case the number of phases be 3, slot number 96, number of poles 16, MgO-ZrO_2 brick 2, using single layer intersect chain type around
The connection type of group.Every phase winding includes 16 coil spring parts 1, and two effective edges of each coil spring part 1 are across 6
Slot.
According to design of electrical motor as a result, each coil spring part is 5 circle conducting wires, the area of every circle conducting wire is 4.8mm2, because
This can be used a copper sheet with a thickness of 0.8mm and carries out punching press, obtain 5 coil plane parts 2 as shown in Figure 2, the benefit of copper material
With rate height.
The manufacturing process of coil component (2A, 2B, 2C, 2D, 2E), specifically, as shown in Fig. 2, by coil plane part 2
The two coil side bendings in the opposite direction in left and right, i.e., folding, another side are rolled over downwards upwards on one side, and each coil plane part has 8
Bending position, each bending position have preferred radius bend and bending angle.8 bending positions of each coil plane part
Symmetrically, the corresponding position bending angle of 5 coil plane parts is identical, radius bend is different, is finally obtained 5 coils zero
Part (2A, 2B, 2C, 2D, 2E).5 above-mentioned coil components be may make up into coil bullet according to by the sequence intussusception of inside to outside
Spring part 1, the end face of adjacent windings part can be used laser welding and be electrically connected, and finally constitute coil spring part 1.Above-mentioned line
Coil spring part 1 easily can carry out insulation plating since design feature has good tensile property with state shown in Fig. 3
Membrane process.
For the coil spring part 1 finally obtained there are two coil side, each coil side has 5 circle copper strap wires radially superposed, can be with
Obtain 4 axial ventilation roads.For each coil spring part 1 there are two leading-out end, cross-sectional area is identical.By 48 coils of three-phase
96 leading-out ends of spring part are welded according to design scheme using copper wire two-by-two, reserve company of 6 leading-out ends as three-phase windings
Head is picked out, the winding (3) of lateral flat form is constituted.
The coil that coil of the invention can be used as cored motor is embedded into iron core slot, can also be directly as nothing
The coil of iron core motor, particularly suitable slimming require strong high density disc type rotating electric machine.
Embodiment 2
Fig. 4 is the schematic diagram of the double-deck stacked winding construction according to an embodiment of the invention.The winding construction may include
Multiple coil spring parts 1；Under normal circumstances, winding is three-phase windings, such as U phase, V phase and W phase；Every phase winding equal turn numbers,
Resistance is equal, and 120 ° of spatial distribution mutual deviation；When winding is more sets or multiple branch circuit, can be used in parallel or series between them
Structure situation connects.
The number of phases is 3 in this case, slot number 96, number of poles 16, MgO-ZrO_2 brick 2, using the company of the double-deck lap winding
Connect mode.Every phase winding includes 32 coil spring parts 1, and two effective edges of each coil spring part 1 are across 6 slots.
The coil plane part 2 that punching press obtains can be obtained by bending by coil component using method as shown in Figure 2
(2A, 2B, 2C, 2D, 2E), it is final to obtain coil spring part 1.Unlike embodiment 1, there are 2 in this scheme in each slot
Coil side, be respectively adjacent windings spring part upper layer while and when lower layer, each coil side has 5 circle copper strap wires radially superposed, such as
Shown in Fig. 5, F represents axial ventilation road, and three-phase windings share 96 coil spring parts, and 192 leading-out ends are carried out using copper conductor
Welding, reserves 6 leading-out ends and lifts one's head as the connection of three-phase windings, constitutes the winding 3 of lateral flat form.
In addition, the outer rim form of above-mentioned coil rolling piece is sector, but the shape be also possible to round, ellipse or
Rectangle with chamfering.The invention is applicable not only to the coil in insertion iron core, is applied equally to iron-less core coil.
The above is present pre-ferred embodiments, for the ordinary skill in the art, according to the present invention
Introduction, in the case where not departing from the principle of the present invention and spirit, changes, modifications, replacement and change that embodiment is carried out
Type is still fallen within protection scope of the present invention.
Claims (8)
1. a kind of high power density disc type motor winding construction, which is characterized in that including the identical coil spring part of multiple structures
It is embedded in iron core slot in the way of short distance or whole square, or separately as iron-core-free winding straight forming；Each coil spring part
It is superimposed several layers from inside to outside by the similar coil component of multiple shapes to constitute, the coil component on one piece of copper sheet by going out or line
The coil plane part being cut into carries out bending according to preferred bending angle and radius bend in opposite direction and is formed.
2. a kind of high power density disc type motor winding construction according to claim 1, which is characterized in that the coil bullet
Spring part carries out insulating layer coating film treatment by way of spring elongation.
3. a kind of high power density disc type motor winding construction according to claim 1, which is characterized in that the coil is flat
The number of surface parts determines by the number of turns in design of electrical motor scheme, and the size of coil plane part is according to the area and length of motor inserting-coil slot
Degree is common to be determined, the coil plane part carries out bending according to preferred bending angle and radius bend in opposite direction, can
Coil component is obtained, a few may make up coil spring part, adjacent windings part by inside to outside intussusception by multiple coil components
End face be electrically connected using laser welding.
4. a kind of high power density disc type motor winding construction according to claim 1, which is characterized in that the coil bullet
The outer rim shape of spring part is any shape fan-shaped, round, in rectangle or ellipse with chamfering.
5. a kind of high power density disc type motor winding construction according to claim 1, which is characterized in that the coil volume
After being arranged by design requirement around part, using copper conductor or copper strips by the exit of each phase adjacent windings spring part according to setting
Meter requires welded be electrically connected.
6. a kind of high power density disc type motor winding construction according to claim 1, which is characterized in that the coil volume
Two coil sides around part are arranged in two slots with the state of upper and lower level, no overlap phenomenon.
7. a kind of high power density disc type motor winding construction according to claim 1, which is characterized in that the coil bullet
There is n circle copper strap wire radially superposed in each coil side of spring part, n-1 axial ventilation road can be obtained.
8. a kind of bending preparation method of high power density disc type motor winding construction as claimed in claim 1,
It is characterized in that, includes the following steps: the coil plane part according to preferred bending angle and radius bend along opposite side
To bending is carried out, coil component can get；By multiple coil components, by inside to outside intussusception, a few may make up coil spring part,
The end face of adjacent windings part can be used laser welding and be electrically connected；Then by coil spring part according to the scheme of design of electrical motor
By short distance or it is whole be embedded in iron core slot away from a manner of, for iron-core-free winding then straight forming；By the extraction of the coil spring
Head then constitutes machine winding structure through copper wire welding.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910173121.9A CN109861427A (en) | 2019-03-07 | 2019-03-07 | A kind of high power density disc type motor winding construction and its bending preparation method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910173121.9A CN109861427A (en) | 2019-03-07 | 2019-03-07 | A kind of high power density disc type motor winding construction and its bending preparation method |
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| CN109861427A true CN109861427A (en) | 2019-06-07 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111953109A (en) * | 2020-08-11 | 2020-11-17 | 哈尔滨工业大学 | Double-layer integral pitch winding axial magnetic field permanent magnet synchronous motor |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20060267439A1 (en) * | 2001-05-24 | 2006-11-30 | Rajasingham Arjuna I | Axial gap electrical machine |
| JP2012100433A (en) * | 2010-11-02 | 2012-05-24 | Toyota Motor Corp | Conductor wire including insulative coating and rotating electric machine |
| CN208158241U (en) * | 2017-12-31 | 2018-11-27 | 苏州英磁新能源科技有限公司 | A kind of iron-core-free axial-flux electric machine |
| CN109196602A (en) * | 2016-03-31 | 2019-01-11 | 埃赛克斯集团有限公司 | Insulation winding wire rod product with conformal coating |
-
2019
- 2019-03-07 CN CN201910173121.9A patent/CN109861427A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20060267439A1 (en) * | 2001-05-24 | 2006-11-30 | Rajasingham Arjuna I | Axial gap electrical machine |
| JP2012100433A (en) * | 2010-11-02 | 2012-05-24 | Toyota Motor Corp | Conductor wire including insulative coating and rotating electric machine |
| CN109196602A (en) * | 2016-03-31 | 2019-01-11 | 埃赛克斯集团有限公司 | Insulation winding wire rod product with conformal coating |
| CN208158241U (en) * | 2017-12-31 | 2018-11-27 | 苏州英磁新能源科技有限公司 | A kind of iron-core-free axial-flux electric machine |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111953109A (en) * | 2020-08-11 | 2020-11-17 | 哈尔滨工业大学 | Double-layer integral pitch winding axial magnetic field permanent magnet synchronous motor |
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Application publication date: 20190607 |