CN113708578B - Conductive connection method of motor coil - Google Patents
Conductive connection method of motor coil Download PDFInfo
- Publication number
- CN113708578B CN113708578B CN202110977656.9A CN202110977656A CN113708578B CN 113708578 B CN113708578 B CN 113708578B CN 202110977656 A CN202110977656 A CN 202110977656A CN 113708578 B CN113708578 B CN 113708578B
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- copper
- wire
- aluminum
- sleeve
- copper sleeve
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K15/00—Methods or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines
- H02K15/0056—Manufacturing winding connections
- H02K15/0068—Connecting winding sections; Forming leads; Connecting leads to terminals
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
- H02G1/00—Methods or apparatus specially adapted for installing, maintaining, repairing or dismantling electric cables or lines
- H02G1/14—Methods or apparatus specially adapted for installing, maintaining, repairing or dismantling electric cables or lines for joining or terminating cables
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- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Power Engineering (AREA)
- Windings For Motors And Generators (AREA)
Abstract
The invention relates to a conductive connection method of a motor coil, which comprises a power line and an enameled wire wound on a motor stator; the conductor of the power line is a copper wire, and the conductor of the enameled wire is an aluminum wire; divide into whole copper pencil and a plurality of scattered copper lines with the copper line, recycle whole copper pencil and the rotatory winding of aluminium wire, and form copper aluminium winding pencil, and utilize a plurality of scattered copper lines to copper aluminium winding pencil surface parcel winding, and form copper aluminium parcel pencil, utilize copper sleeve lower extreme opening fixation clamp to press on copper aluminium parcel pencil afterwards, and make the inside vacuole formation of copper sleeve, utilize tin liquor to flow into inside the copper sleeve at last, discharge the inside air of copper sleeve, accomplish the welding between copper sleeve and the copper aluminium parcel pencil, make the copper aluminium parcel pencil that is located inside the copper sleeve be in vacuum state, in order to avoid the aluminium wire to expose, it cuts easily to reduce the aluminium wire, or cause the problem of oxidation with outside air contact, improve the conductive connection stability and the life between copper line and the aluminium wire.
Description
Technical Field
The invention relates to a conductive connection method of a motor coil.
Background
When the motor is in production, the enameled wire of the stator coil needs to be butted with an external power line after being wound, wherein the enameled wire conductor and the power line conductor of the stator coil are copper wires generally, and the two are copper wires, so that the production cost is particularly high. In order to reduce the production cost, manufacturers can change the enameled wire conductor material of the stator coil into an aluminum wire, although the production cost can be reduced, when the enameled wire of the stator coil is butted with a power line, an overlapping winding mode is usually adopted, namely, firstly, the enameled wire and an insulating layer on the surface of a conductor of the power line are removed, the conductors of the enameled wire and the power line are respectively exposed, then, the exposed conductors of the enameled wire and the power line are mutually overlapped, and finally, the rotation winding is utilized, so that the butting of the enameled wire of the stator coil and the power line is completed, the aluminum wire conductor is easily exposed in the butting mode, the exposed aluminum wire conductor is easily cut off or is contacted with the outside air to cause oxidation, the motor is short-circuited and cannot work, the use stability is poor, and the service life is short. Therefore, further improvements are necessary.
Disclosure of Invention
The invention aims to provide a conductive connection method of a motor coil to overcome the defects in the prior art.
The conductive connection method of the motor coil designed according to the purpose comprises a power line and an enameled wire wound on a motor stator, and is characterized in that: the conductor of the power line is a copper wire, and the conductor of the enameled wire is an aluminum wire; the method for electrically connecting the power line and the enameled wire comprises the following steps:
the method comprises the following steps: respectively removing the insulating layers at the end parts of the power line and the enameled wire to respectively expose the copper wire harness and the aluminum wire;
step two: dividing the copper wire bundle into two strands, wherein one strand is an integral copper wire bundle, and the integral copper wire bundle and the aluminum wire are mutually and rotatably wound to form a copper-aluminum winding wire bundle;
step three: dispersing another strand of copper wire harness to form a plurality of copper wires which are mutually dispersed, wrapping and winding the plurality of dispersed copper wires on the surface of the copper-aluminum winding wire harness, and forming the copper-aluminum wrapping wire harness;
step four: a copper sleeve is arranged on the copper-aluminum wrapped wire harness in a penetrating way, and the lower part of the copper sleeve is clamped, so that the lower end opening of the copper sleeve is fixedly clamped on the copper-aluminum wrapped wire harness;
step five: dipping the copper sleeve with rosin powder, and then putting the copper sleeve in a tin furnace to soak the copper sleeve dipped with the rosin powder in tin liquid;
step six: the tin liquid enters the copper sleeve through the upper end opening and/or the lower end opening of the copper sleeve, air in the copper sleeve is exhausted, welding between the copper sleeve and the copper-aluminum wrapped wire harness is completed, and the copper-aluminum wrapped wire harness positioned in the copper sleeve is in a vacuum state;
step seven: and finally, insulating sleeves are fixedly sleeved among the copper sleeve, the power line and the enameled wire so as to finally realize the conductive connection of the power line and the enameled wire.
In the first step, the insulating layer at the end part of the power line and/or the enameled wire is polished by a grinding tool.
In the second step, the junction point between the aluminum wire and the enameled wire is higher than the junction point between the two copper wire bundles.
In the third step, the junction point between the aluminum wire and the enameled wire is 5-15mm higher than the junction point between the two copper wire bundles.
And the integral copper wire harness is mutually and rotatably wound with all the aluminum wires and part of the enameled wires.
And the plurality of scattered copper wires are wrapped and wound on the surfaces of all the copper-aluminum winding wire harnesses and part of the enameled wires.
And in the fourth step, carrying out silver plating treatment on the copper sleeve, wherein a gap is formed between an opening at the upper end of the copper sleeve and a cross joint point of the winding positions of the copper wire, the aluminum wire and/or the enameled wire, and the gap is 2-8 mm.
All the aluminum wires and part of the enameled wires are positioned in the copper sleeve; and the winding positions of the copper wires and the enameled wires are positioned outside the upper end opening of the copper sleeve.
In the fourth step, the lower part of the copper sleeve is clamped and pressed by a clamp, and the clamping and pressing size of the copper sleeve accounts for 1/4-1/2 of the whole size of the copper sleeve.
And step five, aligning the upper opening of the copper sleeve with the tin liquid level, or enabling the upper opening of the copper sleeve to be lower than the tin liquid level by 0.1-2 mm.
And removing the exposed copper-aluminum wrapped wire harness positioned below the lower end opening of the copper sleeve between the fourth step and the fifth step, or between the fifth step and the sixth step, or between the sixth step and the seventh step.
Through the improvement of the structure, compared with the prior art, the invention has the following advantages:
1. utilize whole copper pencil and aluminium line mutual rotation winding to prevent effectively that the two from taking off, form effective, and stable electrically conductive connection between messenger's copper line and the aluminium line.
2. Utilize a plurality of scattered copper lines to wrap up the winding to copper aluminium winding pencil surface, also wrap up the winding to partial enameled wire surface simultaneously to avoid the aluminium wire to expose, reduce the aluminium wire and cut easily, or cause the problem of oxidation with the outside air contact, improve the electrically conductive connection stability between copper line and the aluminium wire.
3. Press copper sheathing lower extreme opening fixation clamp on copper aluminium parcel pencil, make the two realize stable connection, let the inside vacuole formation of copper sheathing simultaneously, so that the molten tin flows into inside the copper sheathing, also can be with the inside air escape of copper sheathing simultaneously, and accomplish the welding between copper sheathing and the copper aluminium parcel pencil, further improve the electrically conductive connection stability between copper line and the aluminium wire, and the copper aluminium parcel pencil that is located inside the copper sheathing is in vacuum state, thereby further avoid the contact of aluminium wire and outside air, the service life of product is improved.
4. Insulating sleeve can carry out insulating parcel to copper sheathing, power cord and enameled wire to avoid air or foreign matter to cause the influence to the junction between copper sheathing, power cord and the enameled wire, not only improve the aesthetic property of the electrically conductive connection of power cord and enameled wire, can also avoid the electric leakage, ensure the safety in utilization.
Detailed Description
The conductive connection method of the motor coil comprises a power line and an enameled wire wound on a motor stator; the conductor of the power line is a copper wire, and the conductor of the enameled wire is an aluminum wire; the conductive connection method of the power line and the enameled wire comprises the following steps:
the method comprises the following steps: respectively removing the insulating layers at the end parts of the power line and the enameled wire to respectively expose the copper wire harness and the aluminum wire;
step two: dividing the copper wire bundle into two strands, wherein one strand is an integral copper wire bundle, and the integral copper wire bundle and an aluminum wire are mutually and rotationally wound to form a copper-aluminum winding wire bundle;
step three: dispersing another strand of copper wire harness to form a plurality of copper wires which are mutually dispersed, wrapping and winding the plurality of dispersed copper wires on the surface of the copper-aluminum winding wire harness, and forming the copper-aluminum wrapping wire harness;
step four: a copper sleeve is arranged on the copper-aluminum wrapped wire harness in a penetrating way, and the lower part of the copper sleeve is clamped, so that the lower end opening of the copper sleeve is fixedly clamped on the copper-aluminum wrapped wire harness;
step five: dipping the copper sleeve with the rosin powder, and then putting the copper sleeve in a tin furnace to soak the copper sleeve dipped with the rosin powder in tin liquid;
step six: the tin liquid enters the copper sleeve through the upper end opening and/or the lower end opening of the copper sleeve, air in the copper sleeve is exhausted, welding between the copper sleeve and the copper-aluminum wrapped wire harness is completed, and the copper-aluminum wrapped wire harness positioned in the copper sleeve is in a vacuum state;
step seven: and finally, insulating sleeves are fixedly sleeved among the copper sleeve, the power line and the enameled wire so as to finally realize the conductive connection of the power line and the enameled wire.
In the first step, the insulating layer at the end part of the power line and/or the enameled wire is polished by a grinding tool. Because only one aluminium wire, and matter soft easily disconnected are in the enameled wire, therefore this embodiment preferentially adopts the grinding apparatus to polish and detach the insulating layer of enameled wire tip, and wherein, the grinding apparatus is the sand mill, to the detaching of power cord insulating layer, because the inside copper line of power cord is more, and matter is hard, consequently can adopt tong utensil or sand mill etc. to detach the power cord insulating layer.
In the prior art, a chemical solution (a paint removing solution) is used for soaking or wiping a power line and an enameled wire, so that an insulating layer is removed, but the chemical solution (the paint removing solution) has certain acidity or alkalinity, and can corrode a copper wire and an aluminum wire when contacting the copper wire and the aluminum wire, so that the use stability of the copper wire and the aluminum wire is influenced.
In the embodiment, the insulating layers of the power line and the enameled wire are removed in a physical removal mode, so that the copper wire and the aluminum wire are not affected, and the stability is higher compared with the chemical removal.
In the second step, the junction point between the aluminum wire and the enameled wire is higher than the junction point between the two copper wire bundles. Specifically, the junction point between the aluminum wire and the enameled wire is 5-15mm higher than the junction point between the two strands of copper wire. The method is characterized in that the method comprises the following steps that enameled wires (the positions of exposed aluminum wires 5-15mm downwards) and an integral copper wire bundle are overlapped in a crossed mode, then the enameled wires and the integral copper wire bundle are wound in a mutual rotating mode, at the moment, the integral copper wire bundle can be wound with all the aluminum wires and part of the enameled wires in a mutual rotating mode, the advantage is that the whole aluminum wires and part of the enameled wires can be wound with the integral copper wire bundle together, so that the copper wires and the aluminum wires are effectively prevented from loosening, and effective and stable conductive connection is formed between the enameled wires and the aluminum wires.
A plurality of scattered copper line parcel windings are on whole copper aluminium winding pencil surface and partial enameled wire surface, and a plurality of scattered copper lines wrap up the winding to whole copper aluminium winding pencil surface and partial enameled wire surface promptly, and its benefit lies in enabling that the aluminium wire is whole to be hidden in a plurality of scattered copper intraductals to avoid the aluminium wire to expose, reduce the aluminium wire and cut easily, or cause the problem of oxidation with the outside air contact, improve the conductive connection stability between copper line and the aluminium wire.
In the fourth step, the copper sleeve is subjected to silver plating treatment, the electrical effect of the copper sleeve can be improved, the copper sleeve can be sleeved on the copper-aluminum wrapped wire harness, a gap is formed between the upper end opening of the copper sleeve and the winding positions of the copper wire, the aluminum wire and/or the enameled wire, and specifically, the gap is formed between the upper end opening of the copper sleeve and the winding positions of the copper wire and the enameled wire and is 2-8 mm.
All the aluminum wires and part of the enameled wires are positioned in the copper sleeve; and the winding positions of the copper wires and the enameled wires are positioned outside the upper end opening of the copper sleeve.
Wherein, the lower extreme opening of copper sheathing can form encapsulated situation or leave the gap when the fixed nip is pressed, the lower extreme opening of this embodiment can leave the gap when the fixed nip is pressed, copper sheathing's upper end opening then is loudspeaker form, so that the tin liquid gets into inside the copper sheathing, also can discharge the inside air of copper sheathing simultaneously, and accomplish the welding between copper sheathing and the copper aluminium parcel pencil, further improve the conductive connection stability between copper line and the aluminium wire, and the copper aluminium parcel pencil that is located inside the copper sheathing is in the vacuum state, thereby further avoid the contact of aluminium wire and outside air, improve the life of product, through detecting, the motor life who has utilized this conductive connection method reaches more than 5 years.
In the fourth step, the lower part of the copper sleeve is clamped through a clamp, the clamping size of the copper sleeve accounts for 1/4-1/2 of the whole size of the copper sleeve, namely, the rest sizes (1/2-3/4) of the copper sleeve form a cavity inside, and the cavity can limit tin liquid, so that the copper sleeve and the copper-aluminum wrapped wire harness can be welded conveniently, and meanwhile, the copper-aluminum wrapped wire harness positioned inside the copper sleeve can be in a vacuum state.
And step five, aligning the upper opening of the copper sleeve with the tin liquid level, or enabling the upper opening of the copper sleeve to be lower than the tin liquid level by 0.1-2 mm. Because the lower extreme opening of this embodiment can leave the gap when the fixed clamp is pressed, therefore the copper sheathing soaks in the tin liquid, and inside the tin liquid can get into the copper sheathing from upper end opening and/or lower extreme open-ended gap, improved the mobility of tin liquid, and then the inside air escape of copper sheathing of being convenient for.
Meanwhile, rosin powder is used as a welding aid material in the embodiment, so that the problem that in the prior art, a welding aid solution is used for soaking a copper wire, an aluminum wire and a copper sleeve, but the welding aid solution has certain acidity or alkalinity, and the copper wire, the aluminum wire and the copper sleeve are corroded when the welding aid solution is contacted with the copper wire, the aluminum wire and the copper sleeve is solved.
Between the fourth step and the fifth step, or between the fifth step and the sixth step, or between the sixth step and the seventh step, the exposed copper-aluminum wrapped wire harness positioned below the lower end opening of the copper sleeve is removed, and then the copper sleeve, the power line and the enameled wire can be wrapped in an insulated manner by utilizing the insulated sleeve, so that the influence of air or foreign matters on the connecting part between the copper sleeve and the enameled wire as well as the conductive connection between the power line and the enameled wire is avoided, the attractiveness of the conductive connection between the power line and the enameled wire is improved, the electric leakage can be avoided, and the use safety is ensured.
The foregoing is a preferred embodiment of the present invention, and the basic principles, principal features and advantages of the invention are shown and described. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are merely illustrative of the principles of the invention, but various changes and modifications may be made without departing from the spirit and scope of the invention, which is defined by the appended claims and their equivalents.
Claims (9)
1. The conductive connection method of the motor coil comprises a power line and an enameled wire wound on a motor stator, and is characterized in that: the conductor of the power line is a copper wire, and the conductor of the enameled wire is an aluminum wire; the method for electrically connecting the power line and the enameled wire comprises the following steps:
the method comprises the following steps: respectively removing the insulating layers at the end parts of the power line and the enameled wire to respectively expose the copper wire harness and the aluminum wire;
step two: dividing the copper wire bundle into two strands, wherein one strand is an integral copper wire bundle, and the integral copper wire bundle and the aluminum wire are mutually and rotatably wound to form a copper-aluminum winding wire bundle;
step three: dispersing another strand of copper wire harness to form a plurality of copper wires which are mutually dispersed, wrapping and winding the plurality of dispersed copper wires on the surface of the copper-aluminum winding wire harness, and forming the copper-aluminum wrapping wire harness;
step four: a copper sleeve is arranged on the copper-aluminum wrapped wire harness in a penetrating way, and the lower part of the copper sleeve is clamped, so that the lower end opening of the copper sleeve is fixedly clamped on the copper-aluminum wrapped wire harness;
step five: dipping the copper sleeve with rosin powder, and then putting the copper sleeve in a tin furnace to soak the copper sleeve dipped with the rosin powder in tin liquid;
step six: the tin liquid enters the copper sleeve through the upper end opening and/or the lower end opening of the copper sleeve, air in the copper sleeve is exhausted, welding between the copper sleeve and the copper-aluminum wrapped wire harness is completed, and the copper-aluminum wrapped wire harness positioned in the copper sleeve is in a vacuum state;
step seven: and finally, insulating sleeves are fixedly sleeved among the copper sleeve, the power line and the enameled wire so as to finally realize the conductive connection of the power line and the enameled wire.
2. The conductive connection method of a motor coil according to claim 1, characterized in that: in the first step, the insulating layer at the end part of the power line and/or the enameled wire is polished by a grinding tool.
3. The conductive connection method of a motor coil according to claim 1, characterized in that: in the second step, the junction point between the aluminum wire and the enameled wire is higher than the junction point between the two copper wire bundles.
4. The conductive connection method of a motor coil according to claim 3, characterized in that: in the third step, the junction point between the aluminum wire and the enameled wire is 5-15mm higher than the junction point between the two strands of copper wire;
the integral copper wire harness is mutually and rotatably wound with all the aluminum wires and part of the enameled wires;
and the plurality of scattered copper wires are wrapped and wound on the surfaces of all the copper-aluminum winding wire harnesses and part of the enameled wires.
5. The conductive connection method of a motor coil according to claim 1, characterized in that: and in the fourth step, carrying out silver plating treatment on the copper sleeve, wherein a gap is formed between an opening at the upper end of the copper sleeve and a cross joint point of the winding positions of the copper wire, the aluminum wire and/or the enameled wire, and the gap is 2-8 mm.
6. The conductive connection method of a motor coil according to claim 5, characterized in that: all the aluminum wires and part of the enameled wires are positioned in the copper sleeve; and the winding positions of the copper wires and the enameled wires are positioned outside the upper end opening of the copper sleeve.
7. The conductive connection method of a motor coil according to claim 1, characterized in that: in the fourth step, the lower part of the copper sleeve is clamped and pressed by a clamp, and the clamping and pressing size of the copper sleeve accounts for 1/4-1/2 of the whole size of the copper sleeve.
8. The conductive connection method of a coil for an electric machine according to claim 1, characterized in that: and step five, aligning the upper opening of the copper sleeve with the tin liquid level, or enabling the upper opening of the copper sleeve to be lower than the tin liquid level by 0.1-2 mm.
9. The conductive connection method of a motor coil according to claim 1, characterized in that: and removing the exposed copper-aluminum wrapped wire harness positioned below the lower end opening of the copper sleeve between the fourth step and the fifth step, or between the fifth step and the sixth step, or between the sixth step and the seventh step.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110977656.9A CN113708578B (en) | 2021-08-24 | 2021-08-24 | Conductive connection method of motor coil |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110977656.9A CN113708578B (en) | 2021-08-24 | 2021-08-24 | Conductive connection method of motor coil |
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| Publication Number | Publication Date |
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| CN113708578A CN113708578A (en) | 2021-11-26 |
| CN113708578B true CN113708578B (en) | 2022-06-21 |
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| CN202110977656.9A Active CN113708578B (en) | 2021-08-24 | 2021-08-24 | Conductive connection method of motor coil |
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| CN201126859Y (en) * | 2007-11-28 | 2008-10-01 | 姚利明 | Connecting structure of aluminum varnished wire and copper wire in aluminum core winding motor |
| JP2010113946A (en) * | 2008-11-06 | 2010-05-20 | Yazaki Corp | Method of connecting aluminum wire with cooper wire, and connector thereof |
| CN202712438U (en) * | 2012-08-08 | 2013-01-30 | 四川省新津潜力水泵厂（普通合伙） | Welding structure of copper-aluminum cable |
| CN203150716U (en) * | 2013-04-07 | 2013-08-21 | 福安市冠华电机有限公司 | Copper wire joint for motor |
| JP2020068141A (en) * | 2018-10-25 | 2020-04-30 | 株式会社オートネットワーク技術研究所 | Wire connection structure and wire connection method |
| CN212114022U (en) * | 2020-05-27 | 2020-12-08 | 康平科技(苏州)股份有限公司 | Copper-aluminum wire brazing protection structure |
-
2021
- 2021-08-24 CN CN202110977656.9A patent/CN113708578B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201126859Y (en) * | 2007-11-28 | 2008-10-01 | 姚利明 | Connecting structure of aluminum varnished wire and copper wire in aluminum core winding motor |
| JP2010113946A (en) * | 2008-11-06 | 2010-05-20 | Yazaki Corp | Method of connecting aluminum wire with cooper wire, and connector thereof |
| CN202712438U (en) * | 2012-08-08 | 2013-01-30 | 四川省新津潜力水泵厂（普通合伙） | Welding structure of copper-aluminum cable |
| CN203150716U (en) * | 2013-04-07 | 2013-08-21 | 福安市冠华电机有限公司 | Copper wire joint for motor |
| JP2020068141A (en) * | 2018-10-25 | 2020-04-30 | 株式会社オートネットワーク技術研究所 | Wire connection structure and wire connection method |
| CN212114022U (en) * | 2020-05-27 | 2020-12-08 | 康平科技(苏州)股份有限公司 | Copper-aluminum wire brazing protection structure |
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| CN113708578A (en) | 2021-11-26 |
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