CN114678990A - Stator winding connection method, stator and motor - Google Patents
Stator winding connection method, stator and motor Download PDFInfo
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- CN114678990A CN114678990A CN202011554464.9A CN202011554464A CN114678990A CN 114678990 A CN114678990 A CN 114678990A CN 202011554464 A CN202011554464 A CN 202011554464A CN 114678990 A CN114678990 A CN 114678990A
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- 238000004804 winding Methods 0.000 title claims abstract description 95
- 238000000034 method Methods 0.000 title claims abstract description 42
- 239000004020 conductor Substances 0.000 claims abstract description 308
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims abstract description 43
- 238000003466 welding Methods 0.000 claims description 21
- 229910052802 copper Inorganic materials 0.000 claims description 20
- 239000010949 copper Substances 0.000 claims description 20
- 239000004973 liquid crystal related substance Substances 0.000 claims description 4
- 238000010586 diagram Methods 0.000 description 10
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 230000000712 assembly Effects 0.000 description 2
- 238000000429 assembly Methods 0.000 description 2
- 230000004323 axial length Effects 0.000 description 2
- 230000006698 induction Effects 0.000 description 2
- 230000007935 neutral effect Effects 0.000 description 2
- 230000001360 synchronised effect Effects 0.000 description 2
- 238000005452 bending Methods 0.000 description 1
- 238000010219 correlation analysis Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000005284 excitation Effects 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000000750 progressive effect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K3/00—Details of windings
- H02K3/04—Windings characterised by the conductor shape, form or construction, e.g. with bar conductors
- H02K3/28—Layout of windings or of connections between windings
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K3/00—Details of windings
- H02K3/04—Windings characterised by the conductor shape, form or construction, e.g. with bar conductors
- H02K3/12—Windings characterised by the conductor shape, form or construction, e.g. with bar conductors arranged in slots
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- 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
- H02K3/50—Fastening of winding heads, equalising connectors, or connections thereto
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K2213/00—Specific aspects, not otherwise provided for and not covered by codes H02K2201/00 - H02K2211/00
- H02K2213/03—Machines characterised by numerical values, ranges, mathematical expressions or similar information
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- Windings For Motors And Generators (AREA)
Abstract
The embodiment of the application provides a stator winding connection method, a stator and a motor, realizes odd-layer windings, provides more stator winding strategy selections for a driving motor, and can adapt to voltage and torque requirements of more different systems. In addition, compared with the winding connection strategy of the even layer, the structure type of the flat copper wire adopted by the winding connection strategy of the odd layer has smaller change. Meanwhile, the end size of the winding is effectively reduced by controlling the positions of the inlet and outlet conductors of each branch of each phase of winding.
Description
Technical Field
The application relates to the technical field of motors, in particular to a stator winding connecting method, a stator and a motor.
Background
With the rapid development of industrial technology, alternating current motors are increasingly applied to various fields, and in new energy automobiles, induction motors and synchronous motors are the mainstream of application, and the structure of the induction motors and the synchronous motors is composed of stator assemblies and rotor assemblies, while the difference mainly lies in the materials and working principles of rotors, and for stators, the structure and the working principles are the same.
The effective stator assembly of the alternating current motor consists of a stator iron core and a stator winding, wherein the iron core provides a magnetic field loop for the motor, and the winding provides input of a three-phase symmetric excitation source for the motor. At present, in new energy automobile, alternating current motor's three-phase winding adopts the flat type copper line mode to improve the heat-sinking capability of stator and the stability of structure more and more, and it also can adapt to the volume production line of fast beat better simultaneously.
The connection strategy of the flat copper wire winding has a plurality of modes, and based on the traditional wave winding theory, the number of conductors in each slot of the most flat copper wire windings is even at present. However, with the increasing variety of new energy vehicles and the increasing abundance of power requirements, it is very important to perform a correlation analysis design on the windings of the odd number layers in order to match more voltage platforms and torque requirements. In this way, a more comprehensive winding strategy selection can be provided for the design of the drive motor when the even-numbered layers of windings cannot be adapted to the voltage and torque parameters of the system.
Disclosure of Invention
In order to fill the technical blank, the application provides a stator winding connection method, a stator and a motor, so that odd-layer windings are realized, more winding strategy selections are provided for a driving motor, and the voltage and torque requirements of different systems are adapted.
In one aspect, an embodiment of the present application provides a stator winding connection method, where the method includes:
the number of poles of a target stator is an even number which is greater than or equal to 4, and a conductor of the 1 st layer in the ith stator slot of the target stator is connected to a conductor of the 1 st layer in the (i + y) th stator slot; the j layer conductor in the i-th stator slot is connected to the j +1 layer conductor in the i + y-th stator slot; the kth layer conductor in the ith stator slot is connected to the kth-1 layer conductor in the ith-y stator slot; the number of stator slots of the target stator is Q, the number of conductor layers of each stator slot is L, and L is an odd number greater than 1; the y is a pitch of the target stator; j is an even number greater than 1 and less than L; k is an odd number greater than 1 and not greater than L;
when the L is greater than 3, the layer 1 conductor in the ith stator slot is electrically connected to the layer 1 conductor and the layer 2 conductor in the (i + y) th stator slot; the m layer conductor in the ith stator slot is electrically connected to the m +/-1 layer conductor in the (i + y) th stator slot; the L conductor in the ith stator slot is electrically connected to the L-1 conductor in the (i + y) th stator slot; the nth conductor in the ith stator slot is electrically connected to the (n +/-1) th layer conductor in the (i-y) th stator slot; the layer 2 conductor in the ith stator slot is electrically connected to the layer 3 conductor in the ith-y stator slot; wherein m is an odd number greater than 1 and less than L; n is an even number greater than 3 and less than L;
When the L equals 3, the layer 1 conductor in the i-th stator slot is electrically connected to the layer 1 conductor and the layer 2 conductor in the i + y-th stator slot; the layer 3 conductor in the ith stator slot is electrically connected to the layer 2 conductor in the (i + y) th stator slot; the layer 2 conductor in the ith stator slot is electrically connected to the layer 3 conductor in the ith-y stator slot;
when the L is greater than or equal to 3, the L conductor in the ith stator slot is electrically connected to the L conductor in the (i + y + 1) th stator slot; the L conductor in the ith stator slot is electrically connected to the L conductor in the (i + y-1) th stator slot.
In one possible implementation, if the target number q of slots per pole and per phase of the stator is an even number greater than 2, the method further includes:
the conductor of the layer 2 in the ith stator slot is electrically connected to the conductor of the layer 1 in the (i-y + 1) th stator slot, or the conductor of the layer 2 in the ith stator slot is electrically connected to the conductor of the layer 1 in the (i-y-3) th stator slot;
the layer 2 conductor in the ith stator slot is electrically connected to the layer 1 conductor in the (i-y + 3) th stator slot, or the layer 2 conductor in the ith stator slot is electrically connected to the layer 1 conductor in the (i-y-1) th stator slot.
In one possible implementation mode, the conductors between the stator slots of the target stator are connected through U-shaped ends of U-shaped flat copper wires;
the conductors among the stator slots of the target stator are electrically connected through the welding ends of the U-shaped flat copper wires; the U-shaped end of the U-shaped flat copper wire is arranged on the same side, and the welding end of the U-shaped flat copper wire is arranged on the same side.
In one possible implementation, each phase winding of the target stator includes 2 parallel-wound branches, and the method further includes:
if the number q of slots of each pole and each phase of the target stator is 2, determining the 1 st layer of conductors of which the head ends of the 2 parallel winding branches are respectively positioned in two slots of any one pole phase group;
if the number q of slots of each phase group of each pole of the target stator is an even number greater than 2, determining that the head ends of the 2 parallel-wound branches are respectively positioned in any one of the pole phase groups:
the layer 1 conductor of the 1 st stator slot and the 2 nd stator slot; alternatively, the first and second liquid crystal display panels may be,
a layer 1 conductor of a q-1 th stator slot and a qth stator slot; alternatively, the first and second electrodes may be,
a layer 1 conductor of the 1 st stator slot and the q-th stator slot; alternatively, the first and second electrodes may be,
the layer 1 conductor of the q-1 st stator slot and the 2 nd stator slot.
On the other hand, the embodiment of this application still provides a stator, and the pole number of stator is the even number that is greater than or equal to 4, the stator includes:
The 1 st layer conductor in the ith stator slot is connected with the 1 st layer conductor in the (i + y) th stator slot; the j layer conductor in the ith stator slot is connected with the j +1 layer conductor in the (i + y) th stator slot; the kth layer of conductor in the ith stator slot is connected with the kth-1 layer of conductor in the ith-y stator slot; the number of stator slots of the stator is Q, the number of conductor layers of each stator slot is L, and L is an odd number larger than 1; y is the pitch of the target stator; j is an even number greater than 1 and less than L; k is an odd number greater than 1 and not greater than L;
when the L is larger than 3, the layer 1 conductor in the ith stator slot is electrically connected with the layer 1 conductor and the layer 2 conductor in the (i + y) th stator slot; the m layer conductor in the ith stator slot is electrically connected with the m +/-1 layer conductor in the (i + y) th stator slot; the L-th layer conductor in the ith stator slot is electrically connected with the L-1-th layer conductor in the (i + y) -th stator slot; an nth conductor in the ith stator slot is electrically connected with an n +/-1 layer of conductor in the (i-y) th stator slot; the conductor of the layer 2 in the ith stator slot is electrically connected with the conductor of the layer 3 in the ith-y stator slot; wherein m is an odd number greater than 1 and less than L; n is an even number greater than 3 and less than L;
When the L equals 3, the layer 1 conductor in the i-th stator slot is electrically connected to the layer 1 conductor and the layer 2 conductor in the i + y-th stator slot; the layer 3 conductor in the ith stator slot is electrically connected to the layer 2 conductor in the (i + y) th stator slot; the layer 2 conductor in the ith stator slot is electrically connected to the layer 3 conductor in the ith-y stator slot;
when the L is larger than or equal to 3, the L conductor in the ith stator slot is electrically connected with the L conductor in the (i + y + 1) th stator slot; and the L-th layer conductor in the ith stator slot is electrically connected with the L-th layer conductor in the (i + y-1) th stator slot.
In one possible implementation, if the number q of slots per pole and per phase of the stator is an even number greater than 2, the stator further includes:
the conductor of the layer 2 in the ith stator slot is electrically connected with the conductor of the layer 1 in the (i-y + 1) th stator slot, or the conductor of the layer 2 in the ith stator slot is electrically connected with the conductor of the layer 1 in the (i-y-3) th stator slot;
and the layer 2 conductor of the ith stator slot is electrically connected with the layer 1 conductor in the (i-y + 3) th stator slot, or the layer 2 conductor of the ith stator slot is electrically connected with the layer 1 conductor in the (i-y-1) th stator slot.
In one possible implementation manner, the conductors among the target stator slots are connected through U-shaped ends of U-shaped flat copper wires;
conductors among the stator slots of the target stator are electrically connected through the welding ends of the U-shaped flat copper wires; the U-shaped ends of the U-shaped flat copper wires are arranged on the same side; the welding ends of the U-shaped flat copper wires are arranged on the same side. In a possible implementation manner, each phase winding of the target stator comprises 2 parallel-wound branches, and when the number q of slots of each pole and each phase of the stator is 2, the head ends of the 2 parallel-wound branches are respectively located on the layer 1 conductor in two slots of any one polar phase group;
if each phase of the stator winding comprises 2 parallel winding branches and the number q of slots of each phase of each pole of the stator is an even number greater than 2, the head ends of the 2 parallel winding branches are respectively positioned in any one pole phase group:
the layer 1 conductor of the 1 st stator slot and the 2 nd stator slot; alternatively, the first and second electrodes may be,
a layer 1 conductor of a q-1 th stator slot and a qth stator slot; alternatively, the first and second electrodes may be,
a layer 1 conductor of the 1 st stator slot and the q-th stator slot; alternatively, the first and second electrodes may be,
the layer 1 conductor of the q-1 th stator slot and the 2 nd stator slot.
On the other hand, the embodiment of the application also provides a motor, and the motor comprises the stator in the aspect.
The stator winding connection method provided by the aspect realizes odd-layer windings, provides more stator winding strategy selections for the driving motor, and can adapt to the voltage and torque requirements of more different systems. In addition, the structure type of the flat copper wire adopted by the odd-layer winding connection strategy is less in change compared with the even-layer winding connection strategy. Meanwhile, the end size of the winding is effectively reduced by controlling the positions of the inlet and outlet conductors of each branch of each phase of winding.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments described in the present application, and other drawings can be obtained by those skilled in the art without creative efforts.
Fig. 1 is a schematic diagram of a Y-winding according to an embodiment of the present application;
fig. 2A is a schematic view of a U-shaped flat copper wire according to an embodiment of the present disclosure;
fig. 2B is a schematic view of another U-shaped flat copper wire according to an embodiment of the present disclosure;
Fig. 3 is an overall schematic view of a stator armature provided in an embodiment of the present application;
FIG. 4 is a schematic view of an alternative stator armature in accordance with an embodiment of the present application;
fig. 5A is a schematic diagram of an internal circuit of a baffle according to an embodiment of the present application;
fig. 5B is a schematic diagram of a neutral line of a baffle according to an embodiment of the present disclosure;
fig. 6A is a schematic diagram of a 1 st branch line of a U-phase winding according to an embodiment of the present disclosure;
fig. 6B is a schematic diagram of a 2 nd branch line of a U-phase winding according to an embodiment of the present application;
fig. 7A is a schematic diagram illustrating a connection line of a 1 st branch core of a U-phase winding according to an embodiment of the present application;
fig. 7B is a schematic diagram of a U-phase winding 2 nd branch core insertion side connection deployment according to an embodiment of the present application.
Detailed Description
In order to make the technical solutions of the present application better understood, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
It can be understood that, in the field of new energy vehicles, under the influence of vehicle requirements and parameters, the voltage, current, stator outer diameter and axial length of the driving motor may not be flexibly adjusted, and at this time, adjusting the number of turns of the winding coil and the connection mode (Y-shaped or delta-shaped) becomes an important means for adjusting the peak torque of the motor. When the torque demand and the motor back-emf limit are both between different even-numbered layers of windings, the selection of the odd-numbered layers of windings becomes the necessary direction.
In view of this, the embodiment of the application provides a stator winding connection method, a stator and a motor, which realize odd-numbered layers of windings and provide more winding strategy selections for driving the motor so as to adapt to voltage and torque requirements of different systems.
A stator winding connection method provided in an embodiment of the present application is described below with reference to the accompanying drawings.
When the number of stator slots of the target stator is set to be Q and the number of pole pairs is set to be P, the number of poles P is 2 × P, the pole pitch τ is Q/P, and the integral pitch winding pitch y is τ. In this embodiment, the number p of poles is an even number greater than or equal to 4. In each slot of the target stator core, there are L in-slot conductor portions of the winding coils arranged in L layers, where L is an odd number greater than 1, i.e., L is 3+2L, where L has a value of 0,1,2,3 ….
It will be appreciated that the windings may be connected in a wye or delta winding. In the embodiment of the present application, a stator winding method is introduced by using a Y-type winding connection manner, and as shown in fig. 1, three-phase symmetrical windings are formed by three-phase coils with a phase difference of 120 ° in electrical angle, and are sequentially arranged in a stator core slot in a spatial sequence. In practical applications, different connection modes can be adopted according to requirements, and are not limited at all.
The stator winding connection method provided by the embodiment of the application comprises two connection processes, namely a conductor connection process and a conductor electric connection process.
In the process of connecting the conductors, the method specifically comprises the following steps:
s101: the 1 st conductor in the i-th stator slot Q (i) of the target stator is connected to the 1 st conductor in the i + y-th stator slot Q (i + y).
S102: the j-th layer conductor in the i-th stator slot Q (i) is connected to the j + 1-th layer conductor in the i + y-th stator slot Q (i + y). Wherein j is an even number greater than 1 and less than L, i.e., j takes the value of 2,4, …, L-1.
S103: the kth layer conductor in the ith stator slot Q (i) is connected to the kth-1 layer conductor in the ith-y stator slot Q (i-y). Wherein k is an odd number greater than 1 and not greater than L, i.e., k is 3,5, …, L.
In the process of electrically connecting the conductors, when L is greater than 3, that is, when L is 5,7,9 …, the method specifically comprises the following steps:
s104: the layer 1 conductor in the ith stator slot Q (i) is electrically connected to the layer 1 conductor and the layer 2 conductor in the (i + y) th stator slot Q (i + y).
S105: the mth conductor in the ith stator slot Q (i) is electrically connected to the m ± 1 st layer conductor in the (i + y) th stator slot Q (i + y). Wherein m is an odd number greater than 1 and less than L, i.e., m is 3,5, …, L-2.
S106: the L-th conductor in the ith stator slot is electrically connected to the L-1 st conductor in the (i + y) -th stator slot.
S107: the nth conductor in the ith stator slot is electrically connected to the (n + -1) th layer of conductors in the (i-y) th stator slot. Wherein n is an even number greater than 3 and less than L, i.e., n is 4,6, …, L-1.
S108: the layer 2 conductor in the i-th stator slot Q (i) is electrically connected to the layer 3 conductor in the i-y-th stator slot Q (i-y).
In the process of electrically connecting the conductors, when L is equal to 3, the method specifically comprises the following steps:
s109: the layer 1 conductor in the i-th stator slot Q (i) is electrically connected to the layer 1 conductor and the layer 2 conductor in the i + y-th stator slot Q (i + y).
S110: the layer 3 conductor in the i-th stator slot Q (i) is electrically connected to the layer 2 conductor in the i + y-th stator slot Q (i + y).
S111: the layer 2 conductor in the i-th stator slot Q (i) is electrically connected to the layer 3 conductor in the i-y-th stator slot Q (i-y).
In the process of electrically connecting the conductors, when L is greater than or equal to 3, the method further comprises the following steps:
s112: the L-th conductor in the i-th stator slot Q (i) is electrically connected to the L-th conductor in the i + y + 1-th stator slot Q (i + y + 1).
S113: the L-th layer conductor in the ith stator slot Q (i) is electrically connected to the L-th layer conductor in the (i + y-1) -th stator slot Q (i + y-1).
The value of i is determined by winding phase splitting and branch number, i values in any two connection modes can be different, and when the value of i makes the slot number Q (i) negative or larger than the total slot number, the total slot number Q is added or subtracted from Q (i) and the total slot number Q, the following method is similar.
In the embodiment of the present application, a U-shaped end of a U-shaped flat copper wire may be used to connect two conductors. A schematic diagram of a U-shaped flat copper wire with a U-shaped end connected to a conductor on the same layer is shown in fig. 2A, and a schematic diagram of a U-shaped flat copper wire with a U-shaped end connected to a conductor on a different layer is shown in fig. 2B. In the actual connection process, the U-shaped ends of the U-shaped flat copper wires are used for connecting the conductors in the two grooves. The other side of the U-shaped end of the U-shaped flat copper wire, namely the welding end of the U-shaped flat copper wire, is electrically connected with the conductors in the two grooves. The U-shaped ends of the U-shaped flat copper wires are all concentrated on the same side of the motor, and the same is true of the welding ends.
It should be noted that y is the pitch of the windings in this embodiment. In practical applications, a short-distance or long-distance based connection mode can be obtained according to the full-distance winding-based connection method provided by the present application, which is not described herein again.
In the embodiment of the present application, since the number of stator slots is Q and the number of poles is p, the number Q of slots per phase per pole is Q/(3 p). In a possible implementation manner, if q is an even number greater than 2, the electrical connection process of the stator winding method further includes:
and S114, electrically connecting the conductor of the layer 2 in the ith stator slot Q (i) to the conductor of the layer 1 in the (i-y +1) th stator slot Q (i-y +1), or electrically connecting the conductor of the layer 2 in the ith stator slot Q (i-y-3) to the conductor of the layer 1 in the (i-y-3) th stator slot Q (i-y-3).
S115: the conductor of the layer 2 in the ith stator slot is electrically connected to the conductor of the layer 1 in the (i-y +3) th stator slot Q (i-y +3), or the conductor of the layer 2 in the ith stator slot is electrically connected to the conductor of the layer 1 in the (i-y-1) th stator slot Q (i-y-1).
Referring to fig. 3 and 4, an overall schematic view of a stator armature provided in an embodiment of the present application is shown. In practical applications, the winding connection can be performed according to specific scenarios and practical requirements, and fig. 3 and 4 are only one possible form of the stator armature provided by the present application, and are not limited herein.
When the conductor spacing C to be welded is not equal to 2 tau-y, a deflector is used. In the embodiment of the present application, the internal circuit of the baffle is only 2 layers, so that the axial length is reduced, and the schematic diagram of the internal circuit and the neutral circuit of the baffle shown in fig. 5A and fig. 5B can be seen.
In an embodiment of the present application, each phase winding of the target stator includes 2 parallel-wound branches, and the stator winding method further includes:
if the number q of each phase slot of each pole of the target stator is 2, determining 2 parallel-wound branches, wherein the head ends of the parallel-wound branches are respectively positioned on the layer 1 conductor in two slots of any one polar phase group, namely, the head ends of the 2 branches are respectively arranged on the layer 1 conductor in the 2 slots in the same polar phase group, and the corresponding tail ends can be determined according to the stator winding method.
If the number q of slots of each pole and each phase of the target stator is an even number greater than 2, determining that the head ends of 2 parallel-wound branches are respectively positioned in any pole phase group:
the layer 1 conductor of the 1 st stator slot and the 2 nd stator slot; alternatively, the first and second liquid crystal display panels may be,
a layer 1 conductor of a q-1 th stator slot and a qth stator slot; alternatively, the first and second electrodes may be,
a layer 1 conductor of a 1 st stator slot and a q-th stator slot; alternatively, the first and second electrodes may be,
the layer 1 conductors of the q-1 stator slot and the 2 nd stator slot.
For example, when the number of parallel-wound branches of each phase winding is 2, and the number of slots of each phase per pole is also 2, the head ends of 2 parallel-wound branches are disposed at the layer 1 conductors of the slot No. 1 and the slot No. 2, and the corresponding tail ends of the 2 parallel-wound branches are disposed at the layer 2 conductors of the slot No. 8 and the slot No. 7, respectively, see fig. 6A and 6B.
The stator winding connection method provided by the embodiment realizes odd-layer windings, provides more stator winding strategy selections for the driving motor, and can adapt to the voltage and torque requirements of more different systems. In addition, compared with the winding connection strategy of the even layer, the structure type of the flat copper wire adopted by the winding connection strategy of the odd layer has smaller change. In addition, because the inlet position of each phase winding branch is positioned in the same polar phase group, and the bending direction of the inlet position of each branch is the same, the size of the end part of the winding is effectively reduced.
For convenience of understanding, the stator winding connection method provided in the above embodiment is described below by taking the stator slot number Q as 48, the pole number p as 8, the number L of conductor layers per slot as 9, the number s of parallel winding branches per phase winding as 2, and the pitch y as 6 as examples.
In this embodiment, stator three-phase high-voltage outlet terminal sets up in the welding end of U-shaped flat copper line: taking U-phase winding as an example, the connection mode of the 1 st parallel winding branch is:
the 1 st layer conductor in the No. 1 slot of the stator is connected to the 1 st conductor in the No. 7 slot through a stator end U-shaped flat copper wire spacing pitch y, the 1 st layer conductor in the No. 7 slot is connected to the 1 st layer conductor in the No. 13 slot through a stator end welding and the like until being connected to the 1 st layer conductor in the No. 43 slot, the 1 st layer conductor in the No. 43 slot is connected to the 2 nd layer conductor in the No. 1 slot through a stator end welding and the 2 nd layer conductor in the No. 1 slot is connected to the 3 rd layer conductor in the No. 7 slot through a stator end U-shaped flat copper wire spacing pitch y, the 3 rd layer conductor in the No. 7 slot is connected to the 2 nd layer conductor in the No. 13 slot through a stator end welding and the like until being connected to the 3 rd layer conductor in the No. 43 slot, the 3 rd layer conductor in the No. 43 slot is connected to the 4 th layer conductor in the No. 1 slot through a stator end welding and the like until being connected to the 9 th layer conductor in the No. 43 slot, the conductor 9 in the No. 43 slot is connected to the conductor 9 in the No. 2 slot through a guide plate, the conductor 9 in the No. 2 slot is connected to the conductor 8 in the No. 44 slot through a stator end U-shaped flat copper wire spacing pitch y, the conductor 8 in the No. 44 slot is connected to the conductor 9 in the No. 38 slot through a stator end welding, and so on until being connected to the conductor 8 in the No. 8 slot, the conductor 8 in the No. 8 slot is connected to the conductor 7 in the No. 2 slot through a stator end welding, the conductor 7 in the No. 2 slot is connected to the conductor 6 in the No. 44 slot through a stator end U-shaped flat copper wire spacing pitch y, and so on until the whole connection of the branch is completed. Similarly, the connection mode of the second parallel branch can be obtained. The specific connection mode of the above embodiment is as follows:
U-phase branch 1:
1.1^7.1-13.1^19.1-25.1^31.1-37.1^43.1-1.2^7.3-13.2^19.3-25.2^31.3-37.2^43.3-1.4^7.5-13.4^19.5-25.4^31.5-37.4^43.5-1.6^7.7-13.6^19.7-25.6^31.7-37.6^43.7-1.8^7.9-13.8^19.9-25.8^31.9-37.8^43.9
2.9^44.8-38.9^32.8-26.9^20.8-14.9^8.8-2.7^44.6-38.7^32.6-26.7^20.6-14.7^8.6-2.5^44.4-38.5^32.4-26.5^20.4-14.5^8.4-2.3^44.2-38.3^32.2-26.3^20.2-14.3^8.2
the above-mentioned "^" indicates that the U-shaped flat copper wire connection is adopted, "-" indicates welding,
a baffle connection is shown and can be seen in fig. 7A.
U-phase branch 2:
2.1^8.1-14.1^20.1-26.1^32.1-38.1^44.1-2.2^8.3-14.2^20.3-26.2^32.3-38.2^44.3-2.4^8.5-14.4^20.5-26.4^32.5-38.4^44.5-2.6^8.7-14.6^20.7-26.6^32.7-38.6^44.7-2.8^8.9-14.8^20.9-26.8^32.9-38.8^44.9
1.9^43.8-37.9^31.8-25.9^19.8-13.9^7.8-1.7^43.6-37.7^31.6-25.7^19.6-13.7^7.6-1.5^43.4-37.5^31.4-25.5^19.4-13.5^7.4-1.3^43.2-37.3^31.2-25.3^19.2-13.3^7.2
the above-mentioned "^" indicates that the U-shaped flat copper wire connection is adopted, "-" indicates welding,
a baffle connection is shown, as can be seen in fig. 7B.
To the stator winding connection method provided in the above embodiment, an embodiment of the present application further provides a stator, where the number of poles of the stator is an even number greater than or equal to 4, and the stator includes:
the conductor of the 1 st layer in the ith stator slot is connected with the conductor of the 1 st layer in the (i + y) th stator slot; the j layer conductor in the ith stator slot is connected with the j +1 layer conductor in the (i + y) th stator slot; the kth layer of conductor in the ith stator slot is connected with the kth-1 layer of conductor in the ith-y stator slot; the number of stator slots of the stator is Q, the number of conductor layers of each stator slot is L, and L is an odd number larger than 1; the y is a pitch of the target stator; j is an even number greater than 1 and less than L; k is an odd number greater than 1 and not greater than L;
when the L is larger than 3, the layer 1 conductor in the ith stator slot is electrically connected with the layer 1 conductor and the layer 2 conductor in the (i + y) th stator slot; the m layer conductor in the ith stator slot is electrically connected with the m +/-1 layer conductor in the (i + y) th stator slot; the L-th layer conductor in the ith stator slot is electrically connected with the L-1-th layer conductor in the (i + y) -th stator slot; the nth conductor in the ith stator slot is electrically connected with the n +/-1 layer of conductor in the ith-y stator slot; the conductor of the layer 2 in the ith stator slot is electrically connected with the conductor of the layer 3 in the ith-y stator slot; wherein m is an odd number greater than 1 and less than L; n is an even number greater than 3 and less than L;
When the L is equal to 3, the layer 1 conductor in the ith stator slot is electrically connected to the layer 1 conductor and the layer 2 conductor in the (i + y) th stator slot; the conductor of the 3 rd layer in the ith stator slot is electrically connected to the conductor of the 2 nd layer in the (i + y) th stator slot; the conductor of the layer 2 in the ith stator slot is electrically connected to the conductor of the layer 3 in the ith-y stator slot;
when the L is larger than or equal to 3, the L conductor in the ith stator slot is electrically connected with the L conductor in the (i + y + 1) th stator slot; and the L-th layer conductor in the ith stator slot is electrically connected with the L-th layer conductor in the (i + y-1) th stator slot.
In a possible implementation manner, if the number q of slots per pole and per phase of the stator is an even number greater than 2, the stator further includes:
the conductor of the layer 2 in the ith stator slot is electrically connected with the conductor of the layer 1 in the (i-y + 1) th stator slot, or the conductor of the layer 2 in the ith stator slot is electrically connected with the conductor of the layer 1 in the (i-y-3) th stator slot;
and the layer 2 conductor of the ith stator slot is electrically connected with the layer 1 conductor in the (i-y + 3) th stator slot, or the layer 2 conductor of the ith stator slot is electrically connected with the layer 1 conductor in the (i-y-1) th stator slot.
In one possible implementation mode, conductors among the target stator slots are connected through U-shaped ends of U-shaped flat copper wires;
conductors among the target stator slots are electrically connected through the welding ends of the U-shaped flat copper wires; the U-shaped ends of the U-shaped flat copper wires are arranged on the same side; the welding ends of the U-shaped flat copper wires are arranged on the same side.
In a possible implementation manner, each phase winding of the target stator comprises 2 parallel-wound branches, and when the number q of slots of each pole and each phase of the stator is 2, the head ends of the 2 parallel-wound branches are respectively located on the layer 1 conductor in two slots of any one polar phase group;
if each phase of the stator winding comprises 2 parallel winding branches and the number q of slots of each phase of each pole of the stator is an even number greater than 2, the head ends of the 2 parallel winding branches are respectively positioned in any one pole phase group:
the layer 1 conductor of the 1 st stator slot and the 2 nd stator slot; alternatively, the first and second electrodes may be,
a layer 1 conductor of a q-1 th stator slot and a qth stator slot; alternatively, the first and second electrodes may be,
a layer 1 conductor of the 1 st stator slot and the q-th stator slot; alternatively, the first and second electrodes may be,
the layer 1 conductor of the q-1 th stator slot and the 2 nd stator slot.
The stator provided by the embodiment realizes odd-layer windings, provides more stator winding strategy selections for the driving motor, and can adapt to the voltage and torque requirements of more different systems. In addition, the structure type of the flat copper wire adopted by the odd-layer winding connection strategy is less in change compared with the even-layer winding connection strategy. Meanwhile, the size of the end part of the winding is effectively reduced by controlling the positions of the inlet and outlet conductors of each branch of each phase of winding.
The embodiment of the application further provides a motor, the motor comprises the stator provided by the embodiment, and the stator is wound by adopting the stator winding connection mode provided by the embodiment.
It should be noted that, in the present specification, all the embodiments are described in a progressive manner, and the same and similar parts among the embodiments may be referred to each other, and each embodiment focuses on the differences from the other embodiments.
The above description is only one specific embodiment of the present application, but the scope of the present application is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present application should be covered within the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.
Claims (9)
1. A stator winding connection method, the method comprising:
the number of poles of a target stator is an even number which is greater than or equal to 4, and a conductor of the 1 st layer in the ith stator slot of the target stator is connected to a conductor of the 1 st layer in the (i + y) th stator slot; the j layer conductor in the i-th stator slot is connected to the j +1 layer conductor in the i + y-th stator slot; the kth layer conductor in the ith stator slot is connected to the kth-1 layer conductor in the ith-y stator slot; the number of stator slots of the target stator is Q, the number of conductor layers of each stator slot is L, and L is an odd number greater than 1; the y is a pitch of the target stator; j is an even number greater than 1 and less than L; k is an odd number greater than 1 and not greater than L;
When the L is greater than 3, the layer 1 conductor in the ith stator slot is electrically connected to the layer 1 conductor and the layer 2 conductor in the (i + y) th stator slot; the m layer conductor in the ith stator slot is electrically connected to the m +/-1 layer conductor in the (i + y) th stator slot; the L conductor in the ith stator slot is electrically connected to the L-1 conductor in the (i + y) th stator slot; the nth conductor in the ith stator slot is electrically connected to the (n +/-1) th layer conductor in the (i-y) th stator slot; the layer 2 conductor in the ith stator slot is electrically connected to the layer 3 conductor in the ith-y stator slot; wherein m is an odd number greater than 1 and less than L; n is an even number greater than 3 and less than L;
when the L equals 3, the layer 1 conductor in the i-th stator slot is electrically connected to the layer 1 conductor and the layer 2 conductor in the i + y-th stator slot; the layer 3 conductor in the ith stator slot is electrically connected to the layer 2 conductor in the (i + y) th stator slot; the layer 2 conductor in the ith stator slot is electrically connected to the layer 3 conductor in the ith-y stator slot;
when the L is greater than or equal to 3, the L conductor in the ith stator slot is electrically connected to the L conductor in the (i + y + 1) th stator slot; the L conductor in the ith stator slot is electrically connected to the L conductor in the (i + y-1) th stator slot.
2. The method of claim 1, wherein if the target stator number of slots per pole per phase q is an even number greater than 2, the method further comprises:
the conductor of the layer 2 in the ith stator slot is electrically connected to the conductor of the layer 1 in the (i-y + 1) th stator slot, or the conductor of the layer 2 in the ith stator slot is electrically connected to the conductor of the layer 1 in the (i-y-3) th stator slot;
the layer 2 conductor in the ith stator slot is electrically connected to the layer 1 conductor in the (i-y + 3) th stator slot, or the layer 2 conductor in the ith stator slot is electrically connected to the layer 1 conductor in the (i-y-1) th stator slot.
3. The method of claim 1, wherein the conductors between the target stator slots are connected by U-shaped ends of U-shaped flat copper wires;
the conductors among the target stator slots are electrically connected through the welding ends of the U-shaped flat copper wires; the U-shaped end of the U-shaped flat copper wire is arranged on the same side, and the welding end of the U-shaped flat copper wire is arranged on the same side.
4. The method of any of claims 1-3, wherein the target stator includes 2 parallel-wound legs per phase winding, the method further comprising:
if the number q of slots of each phase of each pole of the target stator is 2, determining the 1 st layer of conductors of which the head ends of the 2 parallel-wound branches are respectively positioned in two slots of any one pole phase group;
If the number q of slots of each phase group of each pole of the target stator is an even number greater than 2, determining that the head ends of the 2 parallel-wound branches are respectively located in any one of the pole phase groups:
the layer 1 conductor of the 1 st stator slot and the 2 nd stator slot; alternatively, the first and second liquid crystal display panels may be,
a layer 1 conductor of a q-1 th stator slot and a qth stator slot; alternatively, the first and second electrodes may be,
a layer 1 conductor of the 1 st stator slot and the q-th stator slot; alternatively, the first and second electrodes may be,
the layer 1 conductor of the q-1 th stator slot and the 2 nd stator slot.
5. A stator having an even number of poles greater than or equal to 4, the stator comprising:
the conductor of the 1 st layer in the ith stator slot is connected with the conductor of the 1 st layer in the (i + y) th stator slot; the j layer conductor in the ith stator slot is connected with the j +1 layer conductor in the (i + y) th stator slot; the kth layer of conductor in the ith stator slot is connected with the kth-1 layer of conductor in the ith-y stator slot; the number of stator slots of the stator is Q, the number of conductor layers of each stator slot is L, and L is an odd number larger than 1; the y is a pitch of the target stator; j is an even number greater than 1 and less than L; k is an odd number greater than 1 and not greater than L;
When the L is larger than 3, the layer 1 conductor in the ith stator slot is electrically connected with the layer 1 conductor and the layer 2 conductor in the (i + y) th stator slot; the mth layer conductor in the ith stator slot is electrically connected with the (m +/-1) th layer conductor in the (i + y) th stator slot; the L-th layer conductor in the ith stator slot is electrically connected with the L-1-th layer conductor in the (i + y) -th stator slot; an nth conductor in the ith stator slot is electrically connected with an n +/-1 layer of conductor in the (i-y) th stator slot; the conductor of the layer 2 in the ith stator slot is electrically connected with the conductor of the layer 3 in the (i-y) th stator slot; wherein m is an odd number greater than 1 and less than L; n is an even number greater than 3 and less than L;
when the L equals 3, the layer 1 conductor in the i-th stator slot is electrically connected to the layer 1 conductor and the layer 2 conductor in the i + y-th stator slot; the layer 3 conductor in the ith stator slot is electrically connected to the layer 2 conductor in the (i + y) th stator slot; the layer 2 conductor in the ith stator slot is electrically connected to the layer 3 conductor in the ith-y stator slot;
when the L is larger than or equal to 3, the L conductor in the ith stator slot is electrically connected with the L conductor in the (i + y + 1) th stator slot; and the L-th layer conductor in the ith stator slot is electrically connected with the L-th layer conductor in the (i + y-1) th stator slot.
6. The stator according to claim 5, wherein if the number q of slots per pole and per phase of the stator is an even number greater than 2, the stator further comprises:
the conductor of the layer 2 in the ith stator slot is electrically connected with the conductor of the layer 1 in the (i-y + 1) th stator slot, or the conductor of the layer 2 in the ith stator slot is electrically connected with the conductor of the layer 1 in the (i-y-3) th stator slot;
and the layer 2 conductor of the ith stator slot is electrically connected with the layer 1 conductor in the (i-y + 3) th stator slot, or the layer 2 conductor of the ith stator slot is electrically connected with the layer 1 conductor in the (i-y-1) th stator slot.
7. The stator as claimed in claim 5 wherein the conductors between slots of the target stator are connected by U-shaped ends of U-shaped flat copper wires;
conductors among the target stator slots are electrically connected through the welding ends of the U-shaped flat copper wires; the U-shaped ends of the U-shaped flat copper wires are arranged on the same side; the welding ends of the U-shaped flat copper wires are arranged on the same side.
8. The stator according to any one of claims 5-7, wherein each phase winding of the target stator comprises 2 parallel-wound branches, and when the number q of slots of each phase of each pole of the stator is 2, the head ends of the 2 parallel-wound branches are respectively positioned on the layer 1 conductors in two slots of any one pole phase group;
If each phase winding of the stator comprises 2 parallel winding branches and the number q of slots of each pole and each phase of the stator is an even number greater than 2, the head ends of the 2 parallel winding branches are respectively positioned in any one pole phase group:
the layer 1 conductor of the 1 st stator slot and the 2 nd stator slot; alternatively, the first and second liquid crystal display panels may be,
a layer 1 conductor of a q-1 th stator slot and a q-th stator slot; alternatively, the first and second electrodes may be,
a layer 1 conductor of the 1 st stator slot and the q-th stator slot; alternatively, the first and second electrodes may be,
the layer 1 conductor of the q-1 th stator slot and the 2 nd stator slot.
9. An electrical machine comprising a stator according to any one of claims 5 to 8.
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20040061400A1 (en) * | 2002-09-18 | 2004-04-01 | Denso Corporation | Sequentially joined-segment armature and ac machine using same |
| CN109586456A (en) * | 2017-09-29 | 2019-04-05 | 比亚迪股份有限公司 | Motor, stator module and its coil-winding method |
| CN110086279A (en) * | 2019-05-24 | 2019-08-02 | 浩夫尔动力总成（上海）有限公司 | A kind of flat type copper wire driving motor armature winding structure that multilayer is equidistant |
| CN210404886U (en) * | 2019-07-23 | 2020-04-24 | 浙江方正电机股份有限公司 | Stator of novel winding motor |
| CN111555510A (en) * | 2020-06-10 | 2020-08-18 | 天津市松正电动汽车技术股份有限公司 | Motor stator and motor |
| CN212183202U (en) * | 2020-06-10 | 2020-12-18 | 天津市松正电动汽车技术股份有限公司 | Motor stator and motor |
| CN212278005U (en) * | 2020-05-12 | 2021-01-01 | 浙江龙芯电驱动科技有限公司 | Flat copper wire winding structure with 3 slots per pole per phase and motor |
-
2020
- 2020-12-24 CN CN202011554464.9A patent/CN114678990B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20040061400A1 (en) * | 2002-09-18 | 2004-04-01 | Denso Corporation | Sequentially joined-segment armature and ac machine using same |
| CN1499694A (en) * | 2002-09-18 | 2004-05-26 | ��ʽ�����װ | Sequentially joined-segment armature and ac machine using same |
| CN109586456A (en) * | 2017-09-29 | 2019-04-05 | 比亚迪股份有限公司 | Motor, stator module and its coil-winding method |
| CN110086279A (en) * | 2019-05-24 | 2019-08-02 | 浩夫尔动力总成（上海）有限公司 | A kind of flat type copper wire driving motor armature winding structure that multilayer is equidistant |
| CN210404886U (en) * | 2019-07-23 | 2020-04-24 | 浙江方正电机股份有限公司 | Stator of novel winding motor |
| CN212278005U (en) * | 2020-05-12 | 2021-01-01 | 浙江龙芯电驱动科技有限公司 | Flat copper wire winding structure with 3 slots per pole per phase and motor |
| CN111555510A (en) * | 2020-06-10 | 2020-08-18 | 天津市松正电动汽车技术股份有限公司 | Motor stator and motor |
| CN212183202U (en) * | 2020-06-10 | 2020-12-18 | 天津市松正电动汽车技术股份有限公司 | Motor stator and motor |
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