CN113113997A - Motor stator insulation and winding connection structure - Google Patents
Motor stator insulation and winding connection structure Download PDFInfo
- Publication number
- CN113113997A CN113113997A CN202110356428.XA CN202110356428A CN113113997A CN 113113997 A CN113113997 A CN 113113997A CN 202110356428 A CN202110356428 A CN 202110356428A CN 113113997 A CN113113997 A CN 113113997A
- Authority
- CN
- China
- Prior art keywords
- copper bar
- insulation
- stator core
- connection structure
- groove
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
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Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K3/00—Details of windings
- H02K3/32—Windings characterised by the shape, form or construction of the insulation
- H02K3/34—Windings characterised by the shape, form or construction of the insulation between conductors or between conductor and core, e.g. slot insulation
- H02K3/345—Windings characterised by the shape, form or construction of the insulation between conductors or between conductor and core, e.g. slot insulation between conductor and core, e.g. slot insulation
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K3/00—Details of windings
- H02K3/32—Windings characterised by the shape, form or construction of the insulation
- H02K3/38—Windings characterised by the shape, form or construction of the insulation around winding heads, equalising connectors, or connections thereto
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K3/00—Details of windings
- H02K3/46—Fastening of windings on the stator or rotor structure
- H02K3/52—Fastening salient pole windings or connections thereto
- H02K3/521—Fastening salient pole windings or connections thereto applicable to stators only
- H02K3/522—Fastening salient pole windings or connections thereto applicable to stators only for generally annular cores with salient poles
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Insulation, Fastening Of Motor, Generator Windings (AREA)
Abstract
The invention provides a motor stator insulation and winding connection structure, which comprises an annular stator core wound with a coil; a slot insulation framework is arranged in the slot of the stator core; the groove insulation framework is an integral structure formed by uniformly distributing a plurality of groove-shaped strips along the circumference. The invention can completely isolate the enameled wire from the iron core, and has very high reliability; the three-phase copper bar of the motor is integrated in the insulating bracket, and the copper bar are mutually separated, so that the insulating property is good; the integral groove insulation framework is convenient to install and high in assembly efficiency.
Description
Technical Field
The invention relates to a motor stator insulation and winding connection structure.
Background
The motor life is mainly determined by the insulation performance of the motor stator and the connection reliability of the winding. With the rapid development of economic society, various devices or tools used in production and life are developed towards automation and intellectualization, corresponding motors are more and more in demand, and better requirements are provided for the reliability and the production efficiency of the motors.
Among the prior art scheme, constitute by a plurality of insulation system to the motor stator is insulating, have some to adopt insulating paper, have some to adopt split type knot to lead to the skeleton, but these structures have following problem: firstly, the armature winding and the stator core cannot be completely isolated by the insulation structure, and the risk of damaging the enameled wire by the stator core exists, so that the armature of the motor stator is burnt out due to short circuit; secondly, split type insulating skeleton assembly efficiency is lower, influences production efficiency. Aiming at the connection structure of the motor stator winding, a part of schemes adopt enameled wires to be directly led out, and the other part of schemes are provided with an independent wire holder component, but the structures have the following problems: firstly, the lead-out lines of the enameled wires are crossed and cannot be arranged in order, and the enameled wires are exposed outside and are easy to damage to cause short-circuit faults; secondly, the independent wire holder needs to be installed and positioned independently, and the assembly efficiency is influenced.
Disclosure of Invention
In order to solve the technical problem, the invention provides a motor stator insulation and winding connection structure, which enables an enameled wire to be completely isolated from an iron core and has very high reliability.
The invention is realized by the following technical scheme.
The invention provides a motor stator insulation and winding connection structure, which comprises an annular stator core wound with a coil; a slot insulation framework is arranged in the slot of the stator core; the groove insulation framework is formed by uniformly distributing a plurality of groove-shaped strips along the circumference.
The groove insulation framework is connected into a whole by an annular plate.
The inner diameter of the annular plate is consistent with the inner diameter of the circumference of the groove-shaped strip.
The outer diameter of the annular plate is consistent with the outer diameter of the circumference of the groove-shaped strip.
And the bottom end of the stator core is covered with an insulating end plate, and the shape of the insulating end plate is consistent with the shape of the section of the stator core.
The top end of the stator core is covered with an insulating support, and an A-phase copper bar, a B-phase copper bar, a C-phase copper bar and a public copper bar are led out from the insulating support.
And the insulating bracket is provided with a clamping groove boss, and the shape of the clamping groove boss is consistent with that of the winding part of the stator core.
And a positioning boss is arranged at the bottom of the insulating support, a U-shaped groove is arranged on the outer side of the stator core, and the positioning boss is matched with the U-shaped groove in shape.
The A-phase copper bar, the B-phase copper bar, the C-phase copper bar and the public copper bar are all protruded towards the inner side.
The invention has the beneficial effects that: the enameled wire can be completely isolated from the iron core, and the reliability is very high; and with the three-phase copper bar integration of motor in insulating bracket, separate each other between copper bar and the copper bar, insulating properties is good, simple to operate, assembly efficiency is high.
Drawings
FIG. 1 is a schematic structural view of the present invention;
fig. 2 is a schematic view of the structure of the stator core of fig. 1;
FIG. 3 is a schematic diagram of the structure of the slot insulation backbone of FIG. 1;
FIG. 4 is a schematic structural view of the insulating end plate of FIG. 1;
fig. 5 is a schematic structural view of the insulating support of fig. 1.
In the figure: 1-stator core, 2-slot insulating framework, 3-insulating end plate, 4-insulating support, 5-A phase copper bar, 6-B phase copper bar, 7-C phase copper bar, 8-public copper bar, 9-coil, 11-U-shaped slot, 41-slot boss and 42-positioning boss.
Detailed Description
The technical solution of the present invention is further described below, but the scope of the claimed invention is not limited to the described.
Example 1
Fig. 1 shows a motor stator insulation and winding connection structure, which comprises a ring-shaped stator core 1 wound with a coil 9; a slot insulation framework 2 is arranged in a slot of the stator core 1; the groove insulation framework 2 is formed by uniformly distributing a plurality of groove-shaped strips along the circumference.
Example 2
Based on embodiment 1, the slot insulating frames 2 are integrally connected by an annular plate.
Example 3
In example 2, the inner diameter of the annular plate and the inner diameter of the groove-like strip circumference were the same.
Example 4
In example 2, the outer diameter of the annular plate and the outer diameter of the groove-shaped bar were matched.
Example 5
Based on embodiment 1, the bottom end of stator core 1 is covered with insulating end plate 3, and the shape of insulating end plate 3 is consistent with the cross-sectional shape of stator core 1.
Example 6
Based on the embodiment 1, the top end of the stator core 1 is covered with the insulating support 4, and the insulating support 4 is provided with the phase-A copper bar 5, the phase-B copper bar 6, the phase-C copper bar 7 and the public copper bar 8 which are led out.
Example 7
In embodiment 6, the insulating holder 4 has the slot and projection 41, and the shape of the slot and projection 41 is identical to the shape of the winding portion of the stator core 1.
Example 8
Based on embodiment 6, the bottom of the insulating support 4 is provided with a positioning boss 42, the outer side of the stator core 1 is provided with a U-shaped groove 11, and the positioning boss 42 is matched with the U-shaped groove 11 in shape.
Example 9
Based on embodiment 6, the a-phase copper bar 5, the B-phase copper bar 6, the C-phase copper bar 7, and the common copper bar 8 are all convex toward the inside.
Example 11
With reference to the above embodiment, specifically, the stator core is divided into two sections, which are respectively installed in U-shaped grooves at two ends of the slot insulation framework 2, then the insulation end plate 3 is installed at one end of the stator core 1, the end surface of the insulation end plate 3 is flush with the end surface of the slot insulation framework 2, the insulation support 4 is installed at the other end of the stator core 1, and the upper end surface of the inner step of the insulation support 4 is flush with the end surface of the slot insulation framework 2. And finally, winding coils 9 in a slot formed by the stator core 1, the slot insulation framework 2, the insulation end plate 3 and the insulation support 4 according to requirements to form two ends of an A phase, a B phase and a C phase of the armature winding, wherein leading-out ends of the A phase, the B phase and the C phase are respectively connected with an A-phase copper bar 5, a B-phase copper bar 6 and a C-phase copper bar 7, public ends of the A phase, the B phase and the C phase are connected with a public copper bar 8, and the A-phase copper bar 5, the B-phase copper bar 6, the C-phase copper bar 7 and the public copper bar 8 are not in contact with each other.
As shown in fig. 2, the stator core 1 is formed by laminating a plurality of circular silicon steel sheets with a certain thickness, the stator core 1 is divided into two sections, the sizes of the two sections are completely consistent, and the outer circle of the stator core 1 is provided with three U-shaped grooves 1-1 for mounting and positioning with the insulating support 4.
As shown in fig. 3, the inner ring and the outer ring of the slot insulation framework 2 are circular structures, the two ends of the slot insulation framework are U-shaped structures, the slot width of the U-shaped slot is completely consistent with the tooth thickness of the stator core, the depth of the U-shaped slot is greater than the length of one section of the stator core 1 and is equal to the length of one section of the stator core 1 plus the thickness of the step inside the insulation end plate 3 or the insulation support 4. Winding slots are arranged on two sides of the slot insulation framework 2 and used for winding the coils 9.
As shown in fig. 4, the size of the insulating end plate 3 completely corresponds to the size of the cross section of the stator core 1, one end surface of the insulating end plate 3 is in contact with one end surface of the stator core 1, and the other end surface is flush with the end surface of the slot insulating frame 2.
As shown in fig. 5, the insulating support 4 is made of high-temperature-resistant plastic by injection molding, the a-phase copper bar 5, the B-phase copper bar 6, the C-phase copper bar 7 and the public copper bar 8 are integrally injection molded during injection molding, the a-phase copper bar 5, the B-phase copper bar 6 and the C-phase copper bar 7 are axially and radially spaced by a certain distance, the axial distance meets the insulation requirement, the radial distance is determined according to the connection position of the coil, and the public copper bar 8 is also determined according to the connection position of the coil 9 relative to the a-phase copper bar 5, the B-phase copper bar 6 and the C-phase copper.
The insulating support 4 is provided with 3 bosses which are inserted into slots on the stator core for circumferential and axial positioning.
The inner side of the insulation support 4 is provided with a boss 4-1 which has the same shape with the tooth part of the stator core 1, the lower end face of the boss 4-1 is contacted with the end face of the stator core 1, the upper end face is flush with the end face of the slot insulation framework 2, namely, the boss 4-1 of the insulation support 4 is arranged between the U-shaped slots of the slot insulation framework 2, and further the slot insulation and the end face insulation of the motor stator core 1 are formed. In addition, the outer side of the insulating support 4 is provided with a boss 4-2, the boss 4-2 fixes the insulating support 4 in a groove of the excircle of the stator core 1, and the relative position of the insulating support 4 and the stator core 1 is ensured.
A plurality of connecting blocks connected with the coils 9 are arranged on the A-phase copper bar 5, the B-phase copper bar 6, the C-phase copper bar 7 and the common copper bar 8, and the number of the connecting blocks is related to the number and the connection mode of the coils 9. In this embodiment, the a-phase copper bar 5, the B-phase copper bar 6, and the C-phase copper bar 7 each have two connection blocks connected to the coil 9, and the common copper bar 8 has 6 connection blocks.
The coil 9 is made of an enameled wire with a certain wire diameter specification, the enameled wire is wound on a stator tooth of the motor according to the number of turns designed by the motor, the coil 9 is provided with two wire ends, one end of the two wire ends is led out to be used as a three-phase wire of the motor, the other end of the two wire ends is used as a public end, and the public ends of all the coils are fixed together through a public copper bar 8.
Two line ends of the coil 9 are fixed with the connecting blocks on the A-phase copper bar 5, the B-phase copper bar 6, the C-phase copper bar 7 and the common copper bar 8 through high-temperature tin soldering.
The A-phase copper bar 5, the B-phase copper bar 6, the C-phase copper bar 7 and the public copper bar 8 are of arc-shaped structures, and connecting blocks on the A-phase copper bar 5, the B-phase copper bar 6, the C-phase copper bar 7 and the public copper bar 8 are all protruded towards the inner side.
Therefore, the slot insulation framework of the motor stator core is of an integrated symmetrical structure, the two sides of the slot insulation framework are provided with U-shaped structures, the stator core is divided into two parts and is arranged in the U-shaped slots on the two sides of the slot insulation framework, the insulation end parts and the insulation supports are respectively arranged on the two sides of the stator core and are respectively flush with the two ends of the slot insulation framework, a complete stator core insulation structure is formed, in addition, the leading-out wire of the motor is led out through the A-phase copper bar, the B-phase copper bar and the C-phase copper bar, and the A-phase copper bar, the B-phase copper bar and the C-phase copper bar are integrated with the insulation supports.
Claims (9)
1. The utility model provides an insulating and winding connection structure of motor stator, includes annular stator core (1) around having coil (9), its characterized in that: a slot insulation framework (2) is arranged in the slot of the stator core (1); the groove insulation framework (2) is formed by uniformly distributing a plurality of groove-shaped strips along the circumference.
2. The motor stator insulation and winding connection structure of claim 1, wherein: the groove insulation framework (2) is connected into a whole by an annular plate.
3. The motor stator insulation and winding connection structure of claim 2, wherein: the inner diameter of the annular plate is consistent with the inner diameter of the circumference of the groove-shaped strip.
4. The motor stator insulation and winding connection structure of claim 2, wherein: the outer diameter of the annular plate is consistent with the outer diameter of the circumference of the groove-shaped strip.
5. The motor stator insulation and winding connection structure of claim 1, wherein: the bottom end of the stator core (1) is covered with an insulating end plate (3), and the shape of the insulating end plate (3) is consistent with the shape of the cross section of the stator core (1).
6. The motor stator insulation and winding connection structure of claim 1, wherein: the top end of the stator core (1) is covered with an insulating support (4), and an A-phase copper bar (5), a B-phase copper bar (6), a C-phase copper bar (7) and a public copper bar (8) are led out from the insulating support (4).
7. The motor stator insulation and winding connection structure of claim 6, wherein: the insulation support (4) is provided with a clamping groove boss (41), and the shape of the clamping groove boss (41) is consistent with that of the winding part of the stator core (1).
8. The motor stator insulation and winding connection structure of claim 6, wherein: a positioning boss (42) is arranged at the bottom of the insulating support (4), a U-shaped groove (11) is formed in the outer side of the stator core (1), and the positioning boss (42) is matched with the U-shaped groove (11) in shape.
9. The motor stator insulation and winding connection structure of claim 6, wherein: the A-phase copper bar (5), the B-phase copper bar (6), the C-phase copper bar (7) and the public copper bar (8) are all convex towards the inner side.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110356428.XA CN113113997A (en) | 2021-04-01 | 2021-04-01 | Motor stator insulation and winding connection structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110356428.XA CN113113997A (en) | 2021-04-01 | 2021-04-01 | Motor stator insulation and winding connection structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113113997A true CN113113997A (en) | 2021-07-13 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110356428.XA Pending CN113113997A (en) | 2021-04-01 | 2021-04-01 | Motor stator insulation and winding connection structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113113997A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113890244A (en) * | 2021-11-08 | 2022-01-04 | 浙江绿驹车业有限公司 | Cover plate for winding arrangement of stator coil and winding method |
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Application publication date: 20210713 |