WO2023108919A1 - Busbar assembly, stator assembly, electric motor, and power-assisted bicycle - Google Patents

Busbar assembly, stator assembly, electric motor, and power-assisted bicycle Download PDF

Info

Publication number
WO2023108919A1
WO2023108919A1 PCT/CN2022/079110 CN2022079110W WO2023108919A1 WO 2023108919 A1 WO2023108919 A1 WO 2023108919A1 CN 2022079110 W CN2022079110 W CN 2022079110W WO 2023108919 A1 WO2023108919 A1 WO 2023108919A1
Authority
WO
WIPO (PCT)
Prior art keywords
bus bar
main body
support frame
assembly
body part
Prior art date
Application number
PCT/CN2022/079110
Other languages
French (fr)
Chinese (zh)
Inventor
左亚军
周倩云
Original Assignee
广东威灵电机制造有限公司
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Priority claimed from CN202123195700.5U external-priority patent/CN216699655U/en
Priority claimed from CN202111545142.2A external-priority patent/CN114362410A/en
Application filed by 广东威灵电机制造有限公司 filed Critical 广东威灵电机制造有限公司
Publication of WO2023108919A1 publication Critical patent/WO2023108919A1/en

Links

Images

Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K13/00—Structural associations of current collectors with motors or generators, e.g. brush mounting plates or connections to windings; Disposition of current collectors in motors or generators; Arrangements for improving commutation
    • 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

Definitions

  • the present disclosure relates to the technical field of motors, in particular to a bus bar assembly, a stator assembly, a motor and a power-assisted bicycle.
  • bus bars for bridge connection.
  • Existing bus bars usually have a flat plate structure, and multiple bus bars are superimposed along the axial direction, resulting in a large number of bus bar layers in the bus bar assembly, and an insulating layer is provided between the bus bars of adjacent layers.
  • Adding a layer of bus bar will add a layer of insulation layer at the same time, so that the axial size of the bus bar assembly is relatively large, which in turn makes the axial height of the motor stator assembly higher, resulting in an increase in the axial size and volume of the motor. It affects the compatibility and adaptability of the motor and the whole machine.
  • the present disclosure aims to solve at least one of the technical problems existing in the prior art. To this end, the present disclosure proposes a bus bar assembly, which can reduce the number of layers of bus bars, thereby reducing the axial dimension of the bus bar assembly.
  • the present disclosure also provides a stator assembly having the above-mentioned bus bar assembly.
  • the present disclosure also provides a motor with the above stator assembly.
  • the present disclosure further provides an assist bicycle with the above-mentioned motor.
  • the first bus bar is provided with a first main body part embedded in the annular support frame, and the first main body part extends along the circumferential direction of the annular support frame and has a first opening;
  • the second bus bar is provided with a second main body embedded in the annular support frame, and the second main body extends along the circumference of the annular support frame and has a second opening;
  • the third bus bar is provided with a third main body and a fourth main body, the third main body and the fourth main body are electrically connected and embedded in the annular support frame, and the fourth main body is connected to the fourth main body.
  • the third body part has a gap along the axial direction of the annular support frame;
  • first main body part and the second main body part are arranged at intervals along the axial direction of the annular support frame, and the first opening and the second opening are arranged staggered along the circumferential direction of the annular support frame , the third body part is located at the first opening, and the fourth body part is located at the second opening.
  • the first bus bar can be effectively utilized.
  • the idle space between the bus bar and the second bus bar reduces the number of layers of the bus bar, thereby helping to reduce the axial dimension of the bus bar assembly.
  • the height of the gap along the axial direction of the annular support frame is h, and the h satisfies: h ⁇ 0.3mm.
  • the third bus bar is further provided with a bent portion, and two ends of the bent portion are connected to the third main body and the fourth main body respectively.
  • the third body part, the fourth body part and the bending part are integrally formed.
  • the bus bar assembly fixes the first bus bar, the second bus bar, and the third bus bar through an injection molding process, and between adjacent bus bars Form an insulating layer.
  • the bus bar assembly is installed at one end of the stator assembly along the axial direction.
  • the bus bar assembly arranges the third main part of the third bus bar at the first opening of the first bus bar, and the third bus bar
  • the fourth main body is arranged at the second opening of the second bus bar, so that the idle space of the first bus bar and the second bus bar can be effectively used, and the number of layers of the bus bar can be reduced, thereby helping to reduce the axial dimension of the bus bar assembly , thereby reducing the axial dimension of the stator assembly.
  • the stator assembly includes a plurality of segmented stator cores, and a segmented stator winding wound around the segmented stator cores.
  • At least two of the segmented stator windings between adjacent slots of the same-phase winding are single-wire series windings.
  • the winding wires of the segmented stator windings have a square or waist-circular cross section.
  • the busbar assembly is provided with a clamping terminal, and the busbar assembly is clamped to the stator assembly through the clamping terminal.
  • the motor according to the embodiment of the third aspect of the present disclosure includes the stator assembly of the embodiment of the second aspect of the present disclosure.
  • the bus bar assembly of the stator assembly sets the third main part of the third bus bar on the first opening of the first bus bar, and the third bus bar
  • the fourth main part of the bar is arranged in the second opening of the second bus bar, so that the idle space of the first bus bar and the second bus bar can be effectively used, and the number of layers of the bus bar can be reduced, thereby helping to reduce the axis of the bus bar assembly
  • This reduces the axial height of the stator assembly which is conducive to reducing the axial size and volume of the motor, and improving the compatibility and adaptability of the motor and the whole machine.
  • the number of poles of the motor is 2p
  • the number of slots is Z
  • the number of poles and the number of slots satisfy:
  • 2.
  • the power-assisted bicycle according to the embodiment of the fourth aspect of the present disclosure includes the motor of the embodiment of the third aspect of the present disclosure.
  • FIG. 1 is a schematic perspective view of a busbar assembly in some embodiments of the present disclosure
  • Fig. 2 is a schematic top view of the busbar assembly of Fig. 1;
  • Fig. 3 is a schematic sectional view of A-A of Fig. 2;
  • Fig. 4 is an enlarged view of B in Fig. 3;
  • Fig. 5 is a schematic diagram of the assembly of bus bars according to some embodiments of the present disclosure.
  • FIG. 6 is a schematic perspective view of a third bus bar in some embodiments of the present disclosure.
  • Fig. 7 is a schematic perspective view of the stator assembly of some embodiments of the present disclosure.
  • Fig. 8 is an exploded schematic diagram of a stator assembly of some embodiments of the present disclosure.
  • Fig. 9 is a structural schematic diagram of a segmented stator core using separate winding
  • Fig. 10 is an exploded schematic diagram of a stator assembly of some other embodiments of the present disclosure.
  • Fig. 11 is a schematic diagram of the structure of two segmented stator cores with adjacent slots in the same phase that are wound in series.
  • the bus bar assembly 100 The bus bar assembly 100 ; the first bus bar 110 ; the first body part 111 ; the first connection part 112 ; the first opening 113 ; the third bus bar 130; the third main body 131; the fourth main body 132; the bending part 133; the third connecting part 134; the gap 135; the ring support frame 140; terminal 160;
  • Stator assembly 200 segmented stator core 210 ; segmented stator winding 220 ; terminals 221 .
  • orientation descriptions such as the orientation or positional relationship indicated by up, down, front, back, left, right, etc., are based on the orientation or positional relationship shown in the drawings, and only In order to facilitate the description of the present disclosure and simplify the description, it does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and thus should not be construed as limiting the present disclosure.
  • bus bars for bridge connection.
  • Existing bus bars usually have a flat plate structure, and multiple bus bars are superimposed along the axial direction.
  • Each bus bar needs to occupy a separate layer of space, resulting in a large number of bus bar layers in the bus bar assembly, and adjacent layers
  • the increase in axial size and volume of the motor affects the compatibility and adaptability of the motor and the whole machine.
  • the present disclosure proposes a bus bar assembly, which can reduce the number of layers of bus bars, thereby reducing the axial dimension of the bus bar assembly.
  • a bus bar assembly 100 provided by an embodiment of the first aspect of the present disclosure includes an annular support frame 140 , a first bus bar 110 , a second bus bar 120 and a third bus bar 130 , of course the bus bar Assembly 100 may also include other bus bars.
  • the annular support frame 140 is made of insulating material, which can fix and support the first bus bar 110 , the second bus bar 120 and the third bus bar 130 and isolate adjacent bus bars.
  • the annular support frame 140 is an overmolded part.
  • the first bus bar 110, the second bus bar 120, the third bus bar 130 and other bus bars are overmolded and fixed through the injection molding process, and at the same time, the adjacent bus bars An insulating layer is formed between the bus bars, so that the overall structure of the bus bar assembly 100 is more stable, and the adjacent bus bars have good insulation performance.
  • the first bus bar 110 , the second bus bar 120 and the third bus bar 130 are all made of copper bars or other materials with good electrical conductivity, and can play the role of bus flow.
  • the bus bar assembly 100 usually also includes a three-phase connection terminal 150, which is installed on the upper end of the ring support frame 140.
  • the three-phase connection terminal 150 has three connection terminals, and one end of the three connection terminals is respectively connected to three
  • the bus bars are connected one by one, and the other ends of the three connection terminals are connected to the power supply to supply power to the three-phase windings.
  • the first bus bar 110 is a flat plate structure, which includes a first main body 111 and a first connecting portion 112, the first main body 111 is embedded in the ring support frame 140 and along the ring support frame 140
  • the circumferential extension of the first body portion 111 is arranged so that the first body portion 111 is approximately in a semi-circular structure, and at this time, a first opening 113 is formed between two ends of the first body portion 111 along the circumferential direction.
  • the first connecting part 112 is connected to the outer peripheral wall of the first main body part 111.
  • the first connecting part 112 is used to connect the terminals 221 of the motor stator windings that need to be connected together, and make this part of the terminals 221 through the first main part 111 Electrical connection, so as to realize the confluence function.
  • the structure of the second bus bar 120 may be the same as or similar to that of the first bus bar 110 , which includes a second main body portion 121 and a second connecting portion 122 , and the second main body portion 121 is embedded in the ring support frame 140 The center and extend along the circumferential direction of the annular support frame 140 , so that the second main body portion 121 is roughly in the shape of a semi-circular ring. At this time, a second opening 123 is formed between two ends of the second main body portion 121 along the circumferential direction.
  • the second connecting part 122 is connected to the outer peripheral wall of the second main body part 121.
  • the second connecting part 122 is used to connect the terminal 221 of another part of the winding of the motor stator that needs to be connected together, and through the second main part 121, this part of the terminal 221 are electrically connected to realize the confluence function.
  • the third bus bar 130 includes a third body portion 131, a fourth body portion 132 and a third connection portion 134 electrically connected, the third body portion 131 and the fourth body portion 132 are supported along a ring
  • the frame 140 is arranged circumferentially and embedded in the annular support frame 140, and the third main body portion 131 and the fourth main body portion 132 have a gap 135 in the axial direction of the annular support frame 140, so that the third bus bar 130 can span the Between busbars of different layers.
  • the third connecting portion 134 may be provided in multiples, part of the third connecting portion 134 is connected to the outer peripheral wall of the third main body portion 131, part of the third connecting portion 134 is connected to the outer peripheral wall of the fourth main body portion 132, and the third connecting portion 134
  • the terminal 221 is used to connect another part of the winding of the motor stator, and this part of the terminal 221 is electrically connected through the third body part 131 and the fourth body part 132, so as to realize the current converging function.
  • the first bus bar 110 and the second bus bar 120 are arranged at intervals along the axial direction of the annular support frame 140 , and at the same time, they are rotated and staggered along the circumferential direction of the annular support frame 140 , so that the first bus bar 110
  • An opening 113 and a second opening 123 are arranged staggered along the circumferential direction of the annular support frame 140
  • the third main body part 131 is arranged in the first opening 113
  • the fourth main body part 132 is arranged in the second opening 123, that is, the third main body Part 131 and the first main body part 111 are located on the same floor
  • the fourth main body part 132 and the second main body part 121 are located on the same floor, so that the third bus bar 130 can make full use of the idle space of the first bus bar 110 and the second bus bar 120 , so that the total number of layers of bus bars can be reduced.
  • the bus bar assembly 100 Since the bus bars of adjacent layers are isolated by the insulating layer 141 formed by the ring support frame 140, every time a layer of bus bars is reduced, the bus bar assembly 100 also reduces one layer at the same time.
  • the insulating layer 141 can effectively reduce the axial height of the bus bar assembly 100 .
  • the third bus bar 130 can also be provided with a plurality of fourth main body parts 132 according to needs, and the plurality of fourth main body parts 132 are sequentially arranged at intervals along the axial direction of the annular support frame 140 , and along the circumference of the annular support frame 140 Staggered settings, so that each fourth main body 132 can be arranged at the opening of the corresponding bus bar, so that the third bus bar 130 can span more layers of bus bars, make full use of the idle space of other bus bars, thereby reducing Axial dimensions of the busbar assembly 100 .
  • the same-phase windings of the three-phase windings need to use bus bars for bridge connection
  • the existing three-phase windings of the same-phase bridge connection bus bars usually use straight copper bars, that is, adopt the above-mentioned first or
  • the second bus bar 120 needs three layers of copper bars to realize the bridge connection at this time, but if the bridge connection bus bar of a certain phase winding adopts the above-mentioned third bus bar 130, then only two layers of copper bars are needed.
  • the bridge connection between the same-phase windings of the three-phase windings can be realized, thereby reducing the number of layers of copper bars, and reducing the thickness T1 of one layer of copper bars while reducing the thickness T2 of an insulating layer 141, so that the busbar assembly 100
  • the number of the first bus bar 110 and the second bus bar 120 can be set to two or more, and the number of the third bus bar 130 can also be set to two or more, so that the number of bus bars can be reduced.
  • Assembly 100 has more axial height.
  • the insulating layer 141 is used to insulate and isolate the bus bars of adjacent layers. relatively thick. For this reason, in some embodiments of the present disclosure, the height of the gap 135 between the third main body portion 131 and the fourth main body portion 132 along the axial direction of the annular support frame 140 is h, and h satisfies the following relationship: h ⁇ 0.3mm. Therefore, the height of the gap 135 is sufficiently high.
  • the insulating layer 141 is formed by injecting insulating material into the gap 135. At this time, the insulating layer 141 can be made to have a sufficient thickness, so that the third bus bar 130 and the phase Adjacent bus bars have better insulation performance, which is beneficial to improve the insulation and withstand voltage performance of the bus bar assembly 100 .
  • the third bus bar 130 is also provided with a bent portion 133 , and the bent portion 133 is arranged along the axial extension of the annular support frame 140 , or the bent portion 133 is arranged along the axis of the annular support frame 140 .
  • the axial direction of the axis is extended at an included angle, and the included angle is not greater than 90°, so that the third bus bar 130 is in a Z shape.
  • the bent portion 133 can extend from the bus bar of the next layer to the bus bar of the upper layer, Thus, both ends of the bent portion 133 can be respectively connected to the third main body portion 131 and the fourth main body portion 132 located on adjacent layers.
  • the bending portion 133 , the third main body portion 131 and the fourth main body portion 132 can be integrally formed.
  • the copper plate can be formed into the bent part 133, the third main part 131 and the fourth main part 132 integrally by stamping, so that the bent part 133, the third main part 131 The connection strength with the fourth main body part 132 is better, and the processing is more convenient.
  • the bending part 133, the third main body part 131 and the fourth main body part 132 can also be made separately, and then the bending part 133, the third main body part 131 and the fourth main body part 132 are connected to each other by welding or the like.
  • the third bus bar 130 may also connect the fourth body part 132 and the third body part 131 through wires, so as to realize the electrical connection between the fourth body part 132 and the third body part 131 .
  • wires For example, two ends of the copper wire are welded to the fourth main body 132 and the third main body 131 respectively, so as to electrically connect the third main body 131 and the fourth main body 132 located on adjacent layers.
  • the embodiment of the second aspect of the present disclosure provides a stator assembly
  • the stator assembly includes a stator assembly 200 and the bus bar assembly 100 of the embodiment of the first aspect of the present disclosure
  • the bus bar assembly 100 is installed on the stator assembly 200 along the axial end.
  • the bus bar assembly 100 can be provided with structures such as snap-in terminals 160 , so that the bus bar assembly 100 can be snap-mounted on the end of the stator assembly 200 through the snap-in terminals 160 , and the installation and disassembly are relatively convenient.
  • the bus bar assembly 100 sets the third main body portion 131 of the third bus bar 130 in the first opening 113 of the first bus bar 110 , and The fourth main body 132 of the third bus bar 130 is arranged in the second opening 123 of the second bus bar 120, so that the idle space of the first bus bar 110 and the second bus bar 120 can be effectively used, and the number of layers of the bus bar can be reduced , so that it is beneficial to reduce the axial dimension of the bus bar assembly 100, and further reduce the axial dimension of the stator assembly.
  • the stator assembly 200 usually uses an integral iron core for winding, and the slot filling rate of the winding is relatively low, which affects the power density and performance improvement of the motor.
  • the stator assembly 200 consists of a plurality of segmented stator cores 210 and segmented stator windings 220 respectively wound on the corresponding segmented stator cores 210 constitute.
  • by dividing the whole iron core into a plurality of segmented stator iron cores 210 it is beneficial to improve the slot filling rate of the winding, and it is beneficial to improve the power density and performance of the motor.
  • the winding wire of the stator winding is usually a round wire.
  • a large gap is formed between the round wire and the round wire, resulting in a relatively low slot fill rate of the winding.
  • the stator assembly 200 adopts integral iron core, and when round wire is used for winding, the slot full rate is usually only about 55%.
  • some embodiments of the present disclosure use a segmented stator core 210 on the basis of using a wire with a rectangular or square or waist-circular cross section for winding, for example, a flat wire Winding can greatly reduce the gap between the windings and increase the slot filling rate of the winding.
  • the slot filling rate can be increased to about 77%, so that the power density of the motor can be further improved without increasing the volume of the motor and performance.
  • each segmented stator winding 220 has two terminals 221 , which will cause the stator assembly 200 to There are many terminals 221, so the busbar assembly 100 needs to be provided with more connecting parts to connect with the terminals 221, which will lead to an increase in the number of layers of the busbar, and will increase the difficulty of the busbar injection molding process and reduce the injection molding efficiency, thereby increasing the busbar assembly. Row process manufacturing cost. For this reason, in some embodiments of the present disclosure, referring to FIG. 10 and FIG.
  • At least two segmented stator windings 220 between adjacent slots of the same-phase winding are single-wire series windings, so that the two segments between adjacent slots of the same-phase winding
  • a block stator winding 220 has only two terminals 221 in total, thereby greatly reducing the number of terminals 221 of the stator assembly 200, thereby simplifying the structural design of the busbar, reducing the number of welding terminals 221, and effectively improving manufacturing efficiency.
  • it also provides enough operating space for the welding process, ensuring the feasibility of the welding process.
  • each segmented stator core 210 is individually wound, each segmented stator winding 220 has two terminals 221, and the stator assembly 200 has 24 terminals in total. terminal 221, but if the two segmented stator cores 210 of the adjacent slots of the same phase are wound in series, that is, the two segmented stator windings 220 between the adjacent slots of the same phase are single-wire series windings, then each segment The stator winding 220 has only one terminal 221, and the stator assembly 200 has only 12 terminals 221 in total. It can be seen that when the two segmented stator windings 220 between adjacent slots in the same phase are single-wire series windings, the stator assembly 200 can be greatly reduced. Overall terminal 221 count.
  • the embodiment of the third aspect of the present disclosure provides a motor, which includes the stator assembly of the embodiment of the second aspect of the present disclosure.
  • the bus bar assembly 100 of the stator assembly arranges the third main body portion 131 of the third bus bar 130 on the first opening 113 of the first bus bar 110 , And the fourth main body 132 of the third bus bar 130 is arranged in the second opening 123 of the second bus bar 120, so that the idle space of the first bus bar 110 and the second bus bar 120 can be effectively used, and the number of layers of the bus bar can be reduced. number, which is beneficial to reduce the axial dimension of the bus bar assembly 100, thereby reducing the axial height of the stator assembly, which is conducive to reducing the axial dimension and volume of the motor, and improving the compatibility and adaptability of the motor and the whole machine.
  • the number of poles of the motor is 2p
  • the number of slots is Z
  • the number of poles and the number of slots satisfy the following formula:
  • 2.
  • the fundamental winding coefficient of the motor can take a higher value
  • the winding coefficients of each low-order harmonic can take a lower value, so it can increase the magnetic load of the motor and help reduce
  • the noise and harmonic loss generated by the harmonic magnetic field are conducive to improving the efficiency of the motor, and can also ensure that the same-phase winding has adjacent slots, so that the series winding of multiple segmented stator cores 210 can be realized.
  • the embodiment of the fourth aspect of the present disclosure provides an assist bicycle, which includes the motor of the embodiment of the third aspect of the present disclosure.
  • the power-assisted bicycle includes the motor according to the embodiment of the third aspect of the present disclosure, it also has all the beneficial effects of the motor according to the embodiment of the third aspect of the present disclosure, which will not be repeated here.

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Insulation, Fastening Of Motor, Generator Windings (AREA)

Abstract

A busbar assembly, a stator assembly, an electric motor, and a power-assisted bicycle. The busbar assembly (100) comprises an annular support frame (140), a first bus bar (110), a second bus bar (120) and a third bus bar (130), wherein the first bus bar (110) is provided with a first main body part (111) embedded in the annular support frame (140), and the first main body part (111) is provided with a first opening (113); the second bus bar (120) is provided with a second main body part (121) embedded in the annular support frame (140), and the second main body part (121) is provided with a second opening (123); the third bus bar (130) is provided with a third main body part (131) and a fourth main body part (132), which are embedded in the annular support frame (140), there is a gap between the fourth main body part (132) and the third main body part (131)in an axial direction of the annular support frame (140); and the first main body part (111) is arranged spaced apart from the second main body part (121) in the axial direction of the annular support frame (140), the first opening (113) and the second opening (123) are staggered in a circumferential direction of the annular support frame (140), the third main body part (131) is located in the first opening (113), and the fourth main body part (132) is located in the second opening (123).

Description

汇流排组件、定子总成、电机及助力自行车Busbar components, stator assemblies, motors and power-assisted bicycles
相关申请的交叉引用Cross References to Related Applications
本申请要求于2021年12月16日提交的申请号为202111545142.2、名称为“汇流排组件、定子总成、电机及助力自行车”，以及于2021年12月16日提交的申请号为202123195700.5、名称为“汇流排组件、定子总成、电机及助力自行车”的中国专利申请的优先权，其全部内容通过引用结合在本申请中。This application requires the application number 202111545142.2 submitted on December 16, 2021, and the name is "busbar assembly, stator assembly, motor and power-assisted bicycle", and the application number 202123195700.5 submitted on December 16, 2021, the name It is the priority of the Chinese patent application for "bus bar assembly, stator assembly, motor and power-assisted bicycle", the entire content of which is incorporated in this application by reference.
技术领域technical field
本公开涉及电机技术领域，特别涉及一种汇流排组件、定子总成、电机及助力自行车。The present disclosure relates to the technical field of motors, in particular to a bus bar assembly, a stator assembly, a motor and a power-assisted bicycle.
背景技术Background technique
相关技术中，电机的三相绕组的同相之间需要采用汇流条进行过桥连接。现有的汇流条通常为平板状的结构，多个汇流条沿轴向叠加设置，从而造成汇流排组件的汇流条层数较多，而且相邻层的汇流条之间设置有绝缘层，每增加一层汇流条的同时会增加一层绝缘层，使得汇流排组件的轴向尺寸比较大，进而使得电机定子总成的轴向高度较高，造成电机的轴向尺寸增加和体积增大，影响了电机和整机的兼容适配性。In the related art, the same phases of the three-phase windings of the motor need to use bus bars for bridge connection. Existing bus bars usually have a flat plate structure, and multiple bus bars are superimposed along the axial direction, resulting in a large number of bus bar layers in the bus bar assembly, and an insulating layer is provided between the bus bars of adjacent layers. Adding a layer of bus bar will add a layer of insulation layer at the same time, so that the axial size of the bus bar assembly is relatively large, which in turn makes the axial height of the motor stator assembly higher, resulting in an increase in the axial size and volume of the motor. It affects the compatibility and adaptability of the motor and the whole machine.
发明内容Contents of the invention
本公开旨在至少解决现有技术中存在的技术问题之一。为此，本公开提出一种汇流排组件，其能够减少汇流条的层数，进而降低汇流排组件的轴向尺寸。The present disclosure aims to solve at least one of the technical problems existing in the prior art. To this end, the present disclosure proposes a bus bar assembly, which can reduce the number of layers of bus bars, thereby reducing the axial dimension of the bus bar assembly.
本公开还提供一种具有上述汇流排组件的定子总成。The present disclosure also provides a stator assembly having the above-mentioned bus bar assembly.
本公开还提供一种具有上述定子总成的电机。The present disclosure also provides a motor with the above stator assembly.
本公开另外还提供一种具有上述电机的助力自行车。The present disclosure further provides an assist bicycle with the above-mentioned motor.
根据本公开第一方面实施例的汇流排组件，包括：The busbar assembly according to the embodiment of the first aspect of the present disclosure includes:
环形支撑架；ring support frame;
第一汇流条，设有内嵌于所述环形支撑架的第一主体部，所述第一主体部沿所述环形支撑架的周向延伸并具有第一开口；The first bus bar is provided with a first main body part embedded in the annular support frame, and the first main body part extends along the circumferential direction of the annular support frame and has a first opening;
第二汇流条，设有内嵌于所述环形支撑架的第二主体部，所述第二主体部沿所述环形支撑架的周向延伸并具有第二开口；The second bus bar is provided with a second main body embedded in the annular support frame, and the second main body extends along the circumference of the annular support frame and has a second opening;
第三汇流条，设有第三主体部和第四主体部，所述第三主体部和所述第四主体部电性连接并内嵌于所述环形支撑架，所述第四主体部与所述第三主体部沿所述环形支撑架的轴向具有间隙；The third bus bar is provided with a third main body and a fourth main body, the third main body and the fourth main body are electrically connected and embedded in the annular support frame, and the fourth main body is connected to the fourth main body. The third body part has a gap along the axial direction of the annular support frame;
其中，所述第一主体部与所述第二主体部沿所述环形支撑架的轴向间隔设置，且所述第一 开口与所述第二开口沿所述环形支撑架的周向错开设置，所述第三主体部位于所述第一开口，所述第四主体部位于所述第二开口。Wherein, the first main body part and the second main body part are arranged at intervals along the axial direction of the annular support frame, and the first opening and the second opening are arranged staggered along the circumferential direction of the annular support frame , the third body part is located at the first opening, and the fourth body part is located at the second opening.
根据本公开第一方面实施例的汇流排组件，至少具有如下有益效果：The bus bar assembly according to the embodiment of the first aspect of the present disclosure has at least the following beneficial effects:
通过将第三汇流条的第三主体部设于第一汇流条的第一开口，以及将第三汇流条的第四主体部设于第二汇流条的第二开口，从而可以有效利用第一汇流条和第二汇流条的闲置空间，减少汇流条的层数，从而有利于降低汇流排组件的轴向尺寸。By arranging the third body portion of the third bus bar at the first opening of the first bus bar, and arranging the fourth body portion of the third bus bar at the second opening of the second bus bar, the first bus bar can be effectively utilized. The idle space between the bus bar and the second bus bar reduces the number of layers of the bus bar, thereby helping to reduce the axial dimension of the bus bar assembly.
根据本公开的一些实施例，所述间隙沿所述环形支撑架的轴向的高度为h，所述h满足：h≥0.3mm。According to some embodiments of the present disclosure, the height of the gap along the axial direction of the annular support frame is h, and the h satisfies: h≧0.3mm.
根据本公开的一些实施例，所述第三汇流条还设有折弯部，所述折弯部的两端分别连接所述第三主体部和所述第四主体部。According to some embodiments of the present disclosure, the third bus bar is further provided with a bent portion, and two ends of the bent portion are connected to the third main body and the fourth main body respectively.
根据本公开的一些实施例，所述第三主体部、所述第四主体部和所述折弯部一体成型。According to some embodiments of the present disclosure, the third body part, the fourth body part and the bending part are integrally formed.
根据本公开的一些实施例，所述汇流排组件通过注塑工艺将所述第一汇流条、所述第二汇流条和所述第三汇流条包塑固定，并在相邻的汇流条之间形成绝缘层。According to some embodiments of the present disclosure, the bus bar assembly fixes the first bus bar, the second bus bar, and the third bus bar through an injection molding process, and between adjacent bus bars Form an insulating layer.
根据本公开第二方面实施例的定子总成，包括：The stator assembly according to the embodiment of the second aspect of the present disclosure includes:
定子组件；stator assembly;
本公开第一方面实施例的汇流排组件，所述汇流排组件安装于所述定子组件沿轴向的一端。In the bus bar assembly according to the first aspect of the present disclosure, the bus bar assembly is installed at one end of the stator assembly along the axial direction.
根据本公开第二方面实施例的定子总成，至少具有如下有益效果：The stator assembly according to the embodiment of the second aspect of the present disclosure has at least the following beneficial effects:
定子总成由于采用本公开第一方面实施例的汇流排组件，该汇流排组件通过将第三汇流条的第三主体部设于第一汇流条的第一开口，以及将第三汇流条的第四主体部设于第二汇流条的第二开口，从而可以有效利用第一汇流条和第二汇流条的闲置空间，减少汇流条的层数，从而有利于降低汇流排组件的轴向尺寸，进而降低定子总成的轴向尺寸。Since the stator assembly adopts the bus bar assembly according to the embodiment of the first aspect of the present disclosure, the bus bar assembly arranges the third main part of the third bus bar at the first opening of the first bus bar, and the third bus bar The fourth main body is arranged at the second opening of the second bus bar, so that the idle space of the first bus bar and the second bus bar can be effectively used, and the number of layers of the bus bar can be reduced, thereby helping to reduce the axial dimension of the bus bar assembly , thereby reducing the axial dimension of the stator assembly.
根据本公开的一些实施例，所述定子组件包括多个分块定子铁芯，以及绕设于所述分块定子铁芯的分块定子绕组。According to some embodiments of the present disclosure, the stator assembly includes a plurality of segmented stator cores, and a segmented stator winding wound around the segmented stator cores.
根据本公开的一些实施例，同相绕组相邻槽之间的至少两个所述分块定子绕组为单线串联绕组。According to some embodiments of the present disclosure, at least two of the segmented stator windings between adjacent slots of the same-phase winding are single-wire series windings.
根据本公开的一些实施例，所述分块定子绕组的绕线的横截面为方形或腰圆形。According to some embodiments of the present disclosure, the winding wires of the segmented stator windings have a square or waist-circular cross section.
根据本公开的一些实施例，所述汇流排组件设有卡接端子，所述汇流排组件通过所述卡接端子卡接于所述定子组件。According to some embodiments of the present disclosure, the busbar assembly is provided with a clamping terminal, and the busbar assembly is clamped to the stator assembly through the clamping terminal.
根据本公开第三方面实施例的电机，包括本公开第二方面实施例的定子总成。The motor according to the embodiment of the third aspect of the present disclosure includes the stator assembly of the embodiment of the second aspect of the present disclosure.
根据本公开第三方面实施例的电机，至少具有如下有益效果：The motor according to the embodiment of the third aspect of the present disclosure has at least the following beneficial effects:
该电机由于采用本公开第二方面实施例的定子总成，定子总成的汇流排组件通过将第三汇流条的第三主体部设于第一汇流条的第一开口，以及将第三汇流条的第四主体部设于第二汇流条的第二开口，从而可以有效利用第一汇流条和第二汇流条的闲置空间，减少汇流条的层数，从而有利于降低汇流排组件的轴向尺寸，进而降低定子总成的轴向高度，有利于降低电机的轴向尺寸和体积，提高电机和整机的兼容适配性。Since the motor adopts the stator assembly according to the embodiment of the second aspect of the present disclosure, the bus bar assembly of the stator assembly sets the third main part of the third bus bar on the first opening of the first bus bar, and the third bus bar The fourth main part of the bar is arranged in the second opening of the second bus bar, so that the idle space of the first bus bar and the second bus bar can be effectively used, and the number of layers of the bus bar can be reduced, thereby helping to reduce the axis of the bus bar assembly This reduces the axial height of the stator assembly, which is conducive to reducing the axial size and volume of the motor, and improving the compatibility and adaptability of the motor and the whole machine.
根据本公开的一些实施例，所述电机的极数为2p，槽数为Z，所述极数与所述槽数满足：|Z-2p|＝2。According to some embodiments of the present disclosure, the number of poles of the motor is 2p, the number of slots is Z, and the number of poles and the number of slots satisfy: |Z-2p|=2.
根据本公开第四方面实施例的助力自行车，包括本公开第三方面实施例的电机。The power-assisted bicycle according to the embodiment of the fourth aspect of the present disclosure includes the motor of the embodiment of the third aspect of the present disclosure.
根据本公开第四方面实施例的助力自行车，至少具有如下有益效果：The power-assisted bicycle according to the embodiment of the fourth aspect of the present disclosure has at least the following beneficial effects:
由于采用上述的电机，有利于降低助力自行车的体积，提高助力自行车的性能。Due to the adoption of the above-mentioned motor, it is beneficial to reduce the volume of the power-assisted bicycle and improve the performance of the power-assisted bicycle.
本公开的附加方面和优点将在下面的描述中部分给出，部分将从下面的描述中变得明显，或通过本公开的实践了解到。Additional aspects and advantages of the disclosure will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the disclosure.
附图说明Description of drawings
图1是本公开一些实施例的汇流排组件的立体结构示意图；FIG. 1 is a schematic perspective view of a busbar assembly in some embodiments of the present disclosure;
图2是图1的汇流排组件的俯视示意图；Fig. 2 is a schematic top view of the busbar assembly of Fig. 1;
图3是图2的A-A剖视示意图；Fig. 3 is a schematic sectional view of A-A of Fig. 2;
图4是图3中的B处放大图；Fig. 4 is an enlarged view of B in Fig. 3;
图5是本公开一些实施例的汇流条的装配示意图；Fig. 5 is a schematic diagram of the assembly of bus bars according to some embodiments of the present disclosure;
图6是本公开一些实施例的第三汇流条的立体结构示意图；6 is a schematic perspective view of a third bus bar in some embodiments of the present disclosure;
图7是本公开一些实施例的定子总成的立体结构示意图；Fig. 7 is a schematic perspective view of the stator assembly of some embodiments of the present disclosure;
图8是本公开一些实施例的定子总成的分解示意图；Fig. 8 is an exploded schematic diagram of a stator assembly of some embodiments of the present disclosure;
图9是分块定子铁芯采用单独绕线的结构示意图；Fig. 9 is a structural schematic diagram of a segmented stator core using separate winding;
图10是本公开另外一些实施例的定子总成的分解示意图；以及Fig. 10 is an exploded schematic diagram of a stator assembly of some other embodiments of the present disclosure; and
图11是同相相邻槽的两个分块定子铁芯采用串联绕线的结构示意图。Fig. 11 is a schematic diagram of the structure of two segmented stator cores with adjacent slots in the same phase that are wound in series.
附图标记：Reference signs:
汇流排组件100；第一汇流条110；第一主体部111；第一连接部112；第一开口113；第二汇流条120；第二主体部121；第二连接部122；第二开口123；第三汇流条130；第三主体部131；第四主体部132；折弯部133；第三连接部134；间隙135；环形支撑架140；绝缘层141；三相连接端子150；卡接端子160；The bus bar assembly 100 ; the first bus bar 110 ; the first body part 111 ; the first connection part 112 ; the first opening 113 ; the third bus bar 130; the third main body 131; the fourth main body 132; the bending part 133; the third connecting part 134; the gap 135; the ring support frame 140; terminal 160;
定子组件200；分块定子铁芯210；分块定子绕组220；接线端221。 Stator assembly 200 ; segmented stator core 210 ; segmented stator winding 220 ; terminals 221 .
具体实施方式Detailed ways
下面详细描述本公开的实施例，所述实施例的示例在附图中示出，其中自始至终相同或类似的标号表示相同或类似的元件或具有相同或类似功能的元件。下面通过参考附图描述的实施例是示例性的，仅用于解释本公开，而不能理解为对本公开的限制。Embodiments of the present disclosure are described in detail below, examples of which are illustrated in the drawings, in which the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the figures are exemplary only for explaining the present disclosure and should not be construed as limiting the present disclosure.
在本公开的描述中，需要理解的是，涉及到方位描述，例如上、下、前、后、左、右等指示的方位或位置关系为基于附图所示的方位或位置关系，仅是为了便于描述本公开和简化描述，而不是指示或暗示所指的装置或元件必须具有特定的方位、以特定的方位构造和操作，因此不能理解为对本公开的限制。In the description of the present disclosure, it should be understood that the orientation descriptions, such as the orientation or positional relationship indicated by up, down, front, back, left, right, etc., are based on the orientation or positional relationship shown in the drawings, and only In order to facilitate the description of the present disclosure and simplify the description, it does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and thus should not be construed as limiting the present disclosure.
在本公开的描述中，若干的含义是一个或者多个，多个的含义是两个以上，大于、小于、超过等理解为不包括本数，以上、以下、以内等理解为包括本数。如果有描述到第一、第二只是用于区分技术特征为目的，而不能理解为指示或暗示相对重要性或者隐含指明所指示的技术 特征的数量或者隐含指明所指示的技术特征的先后关系。In the description of the present disclosure, several means one or more, and multiple means two or more. Greater than, less than, exceeding, etc. are understood as excluding the original number, and above, below, within, etc. are understood as including the original number. If the description of the first and second is only for the purpose of distinguishing the technical features, it cannot be understood as indicating or implying the relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features relation.
本公开的描述中，除非另有明确的限定，设置、安装、连接、装配、配合等词语应做广义理解，所属技术领域技术人员可以结合技术方案的具体内容合理确定上述词语在本公开中的具体含义。In the description of the present disclosure, unless otherwise clearly defined, words such as setting, installation, connection, assembly, and cooperation should be understood in a broad sense, and those skilled in the art can reasonably determine the meaning of the above words in the present disclosure in combination with the specific content of the technical solution. Concrete meaning.
相关技术中，电机的三相绕组的同相之间需要采用汇流条进行过桥连接。现有的汇流条通常为平板状的结构，多个汇流条沿轴向叠加设置，每个汇流条需要单独占用一层空间，从而造成汇流排组件的汇流条层数较多，而且相邻层的汇流条之间设置有绝缘层，每增加一层汇流条的同时会增加一层绝缘层，使得汇流排组件的轴向尺寸比较大，进而使得电机定子总成的轴向高度较高，造成电机的轴向尺寸增加和体积增大，影响了电机和整机的兼容适配性。In the related art, the same phases of the three-phase windings of the motor need to use bus bars for bridge connection. Existing bus bars usually have a flat plate structure, and multiple bus bars are superimposed along the axial direction. Each bus bar needs to occupy a separate layer of space, resulting in a large number of bus bar layers in the bus bar assembly, and adjacent layers There is an insulating layer between the bus bars, and each additional layer of bus bar will add a layer of insulating layer, making the axial dimension of the bus bar assembly relatively large, which in turn makes the axial height of the motor stator assembly higher, resulting in The increase in axial size and volume of the motor affects the compatibility and adaptability of the motor and the whole machine.
为了解决上述的至少一个技术问题，本公开提出一种汇流排组件，其能够减少汇流条的层数，进而降低汇流排组件的轴向尺寸。In order to solve at least one technical problem above, the present disclosure proposes a bus bar assembly, which can reduce the number of layers of bus bars, thereby reducing the axial dimension of the bus bar assembly.
参照图1和图2，本公开第一方面实施例提供的一种汇流排组件100，包括环形支撑架140、第一汇流条110、第二汇流条120和第三汇流条130，当然汇流排组件100还可以包括其他的汇流条。环形支撑架140由绝缘材料制成，其能够对第一汇流条110、第二汇流条120和第三汇流条130起到固定支撑以及隔离相邻汇流条的作用。环形支撑架140为包塑件，制作环形支撑架140时，通过注塑工艺将第一汇流条110、第二汇流条120和第三汇流条130以及其他的汇流条包塑固定，同时使得相邻的汇流条之间形成有绝缘层，从而使得汇流排组件100的整体结构更为稳固，而且使得相邻的汇流条之间具有良好的绝缘性能。Referring to FIG. 1 and FIG. 2 , a bus bar assembly 100 provided by an embodiment of the first aspect of the present disclosure includes an annular support frame 140 , a first bus bar 110 , a second bus bar 120 and a third bus bar 130 , of course the bus bar Assembly 100 may also include other bus bars. The annular support frame 140 is made of insulating material, which can fix and support the first bus bar 110 , the second bus bar 120 and the third bus bar 130 and isolate adjacent bus bars. The annular support frame 140 is an overmolded part. When making the annular support frame 140, the first bus bar 110, the second bus bar 120, the third bus bar 130 and other bus bars are overmolded and fixed through the injection molding process, and at the same time, the adjacent bus bars An insulating layer is formed between the bus bars, so that the overall structure of the bus bar assembly 100 is more stable, and the adjacent bus bars have good insulation performance.
第一汇流条110、第二汇流条120和第三汇流条130均由铜排或者其他导电良好的材料制成，能够起到汇流的作用。当然，汇流排组件100通常还包括三相连接端子150，三相连接端子150安装于环形支撑架140的上端，三相连接端子150具有三个连接端子，三个连接端子的一端分别与三个汇流条一一对应连接，三个连接端子的另一端与电源连接，对三相绕组进行供电。The first bus bar 110 , the second bus bar 120 and the third bus bar 130 are all made of copper bars or other materials with good electrical conductivity, and can play the role of bus flow. Of course, the bus bar assembly 100 usually also includes a three-phase connection terminal 150, which is installed on the upper end of the ring support frame 140. The three-phase connection terminal 150 has three connection terminals, and one end of the three connection terminals is respectively connected to three The bus bars are connected one by one, and the other ends of the three connection terminals are connected to the power supply to supply power to the three-phase windings.
参照图5，具体的，第一汇流条110为平板结构，其包括第一主体部111和第一连接部112，第一主体部111内嵌于环形支撑架140中并沿着环形支撑架140的周向延伸设置，使得第一主体部111大致呈半圆环结构，此时第一主体部111沿周向的两端之间形成有第一开口113。第一连接部112连接于第一主体部111的外周壁，第一连接部112用于连接电机定子部分绕组需要连接在一起的接线端221，并通过第一主体部111使得该部分接线端221电性连接，从而实现汇流功能。5, specifically, the first bus bar 110 is a flat plate structure, which includes a first main body 111 and a first connecting portion 112, the first main body 111 is embedded in the ring support frame 140 and along the ring support frame 140 The circumferential extension of the first body portion 111 is arranged so that the first body portion 111 is approximately in a semi-circular structure, and at this time, a first opening 113 is formed between two ends of the first body portion 111 along the circumferential direction. The first connecting part 112 is connected to the outer peripheral wall of the first main body part 111. The first connecting part 112 is used to connect the terminals 221 of the motor stator windings that need to be connected together, and make this part of the terminals 221 through the first main part 111 Electrical connection, so as to realize the confluence function.
参照图5，第二汇流条120的结构可以与第一汇流条110的结构相同或者类似，其包括第二主体部121和第二连接部122，第二主体部121内嵌于环形支撑架140中并沿着环形支撑架140的周向延伸设置，使得第二主体部121大致呈半圆环结构，此时第二主体部121沿周向的两端之间形成有第二开口123。第二连接部122连接于第二主体部121的外周壁，第二连接部122用于连接电机定子另一部分绕组需要连接在一起的接线端221，并通过第二主体部121使得该部分接线端221电性连接，从而实现汇流功能。Referring to FIG. 5 , the structure of the second bus bar 120 may be the same as or similar to that of the first bus bar 110 , which includes a second main body portion 121 and a second connecting portion 122 , and the second main body portion 121 is embedded in the ring support frame 140 The center and extend along the circumferential direction of the annular support frame 140 , so that the second main body portion 121 is roughly in the shape of a semi-circular ring. At this time, a second opening 123 is formed between two ends of the second main body portion 121 along the circumferential direction. The second connecting part 122 is connected to the outer peripheral wall of the second main body part 121. The second connecting part 122 is used to connect the terminal 221 of another part of the winding of the motor stator that needs to be connected together, and through the second main part 121, this part of the terminal 221 are electrically connected to realize the confluence function.
参照图5和图6，第三汇流条130包括电性连接的第三主体部131、第四主体部132和第三连接部134，第三主体部131和第四主体部132沿着环形支撑架140的周向设置并内嵌于环形支撑架140中，且第三主体部131和第四主体部132在环形支撑架140的轴向上具有间隙135，使 得第三汇流条130能够跨越于不同层的汇流条之间。第三连接部134可以设有多个，部分第三连接部134连接于第三主体部131的外周壁，部分第三连接部134连接于第四主体部132的外周壁，第三连接部134用于连接电机定子又一部分绕组需要连接在一起的接线端221，并通过第三主体部131和第四主体部132使得该部分接线端221电性连接，从而实现汇流功能。5 and 6, the third bus bar 130 includes a third body portion 131, a fourth body portion 132 and a third connection portion 134 electrically connected, the third body portion 131 and the fourth body portion 132 are supported along a ring The frame 140 is arranged circumferentially and embedded in the annular support frame 140, and the third main body portion 131 and the fourth main body portion 132 have a gap 135 in the axial direction of the annular support frame 140, so that the third bus bar 130 can span the Between busbars of different layers. The third connecting portion 134 may be provided in multiples, part of the third connecting portion 134 is connected to the outer peripheral wall of the third main body portion 131, part of the third connecting portion 134 is connected to the outer peripheral wall of the fourth main body portion 132, and the third connecting portion 134 The terminal 221 is used to connect another part of the winding of the motor stator, and this part of the terminal 221 is electrically connected through the third body part 131 and the fourth body part 132, so as to realize the current converging function.
参照图3至图5，其中，第一汇流条110和第二汇流条120沿着环形支撑架140的轴向间隔设置，同时两者沿着环形支撑架140的周向旋转错开设置，使得第一开口113和第二开口123沿着环形支撑架140的周向错开设置，第三主体部131设置于第一开口113内，第四主体部132设置于第二开口123内，即第三主体部131和第一主体部111位于同一层，第四主体部132和第二主体部121位于同一层，使得第三汇流条130可以充分利用第一汇流条110和第二汇流条120的闲置空间，从而可以减少汇流条的总层数，由于相邻层的汇流条之间通过环形支撑架140构成的绝缘层141进行隔离，因此每减少一层汇流条，汇流排组件100还同时减少一层绝缘层141，从而可以有效降低汇流排组件100的轴向高度。Referring to FIGS. 3 to 5 , wherein, the first bus bar 110 and the second bus bar 120 are arranged at intervals along the axial direction of the annular support frame 140 , and at the same time, they are rotated and staggered along the circumferential direction of the annular support frame 140 , so that the first bus bar 110 An opening 113 and a second opening 123 are arranged staggered along the circumferential direction of the annular support frame 140, the third main body part 131 is arranged in the first opening 113, and the fourth main body part 132 is arranged in the second opening 123, that is, the third main body Part 131 and the first main body part 111 are located on the same floor, and the fourth main body part 132 and the second main body part 121 are located on the same floor, so that the third bus bar 130 can make full use of the idle space of the first bus bar 110 and the second bus bar 120 , so that the total number of layers of bus bars can be reduced. Since the bus bars of adjacent layers are isolated by the insulating layer 141 formed by the ring support frame 140, every time a layer of bus bars is reduced, the bus bar assembly 100 also reduces one layer at the same time. The insulating layer 141 can effectively reduce the axial height of the bus bar assembly 100 .
可以理解的是，第三汇流条130还可以根据需要设置多个第四主体部132，多个第四主体部132沿环形支撑架140的轴向依次间隔设置，并沿环形支撑架140的周向错开设置，使得每个第四主体部132可以设置于相应的汇流条的开口处，从而使得第三汇流条130可以跨越更多层的汇流条，充分利用其它汇流条的闲置空间，从而降低汇流排组件100的轴向尺寸。It can be understood that, the third bus bar 130 can also be provided with a plurality of fourth main body parts 132 according to needs, and the plurality of fourth main body parts 132 are sequentially arranged at intervals along the axial direction of the annular support frame 140 , and along the circumference of the annular support frame 140 Staggered settings, so that each fourth main body 132 can be arranged at the opening of the corresponding bus bar, so that the third bus bar 130 can span more layers of bus bars, make full use of the idle space of other bus bars, thereby reducing Axial dimensions of the busbar assembly 100 .
具体的，三相绕组的同相绕组之间需要采用汇流条进行过桥连接，而现有的三相绕组的同相过桥连接汇流条通常采用平直结构的铜排，即采用上述的第一或第二汇流条120，此时需要三层铜排才能实现过桥连接，但若其中的某相绕组的过桥连接汇流条采用上述的第三汇流条130时，则只需两层铜排即可实现三相绕组的同相绕组之间的过桥连接，从而减少了铜排层数，每减少一层铜排厚度T1的同时会减少一层绝缘层141厚度T2，因此使得汇流排组件100的轴向高度能够降低T，T＝T1+T2，从而可以有效缩减定子总成的高度，使得电机结构更为紧凑，有效缩小了电机体积，提升了电机适配性。Specifically, the same-phase windings of the three-phase windings need to use bus bars for bridge connection, while the existing three-phase windings of the same-phase bridge connection bus bars usually use straight copper bars, that is, adopt the above-mentioned first or The second bus bar 120 needs three layers of copper bars to realize the bridge connection at this time, but if the bridge connection bus bar of a certain phase winding adopts the above-mentioned third bus bar 130, then only two layers of copper bars are needed. The bridge connection between the same-phase windings of the three-phase windings can be realized, thereby reducing the number of layers of copper bars, and reducing the thickness T1 of one layer of copper bars while reducing the thickness T2 of an insulating layer 141, so that the busbar assembly 100 The axial height can reduce T, T=T1+T2, thereby effectively reducing the height of the stator assembly, making the structure of the motor more compact, effectively reducing the volume of the motor, and improving the adaptability of the motor.
需要说明的是，在一些实施例中，第一汇流条110和第二汇流条120的数量可以设置为两条或以上，第三汇流条130也可以设置两条或以上，从而可以降低汇流排组件100更多的轴向高度。It should be noted that, in some embodiments, the number of the first bus bar 110 and the second bus bar 120 can be set to two or more, and the number of the third bus bar 130 can also be set to two or more, so that the number of bus bars can be reduced. Assembly 100 has more axial height.
参照图4，需要说明的是，相邻层的汇流条之间通过绝缘层141进行绝缘隔离，为了使得相邻层的汇流条之间的绝缘性能更好，绝缘层141的厚度通常需要设置得比较厚。为此，在本公开的一些实施例中，第三主体部131和第四主体部132沿环形支撑架140的轴向的间隙135高度为h，h满足以下关系：h≥0.3mm。从而使得间隙135高度足够高，制作汇流排组件100时，通过将绝缘材料注入间隙135内而形成绝缘层141，此时能够使得绝缘层141具有足够的厚度，从而使得第三汇流条130与相邻的汇流条之间具有较好的绝缘性能，有利于提升汇流排组件100的绝缘耐压性能。Referring to Fig. 4, it should be noted that the insulating layer 141 is used to insulate and isolate the bus bars of adjacent layers. relatively thick. For this reason, in some embodiments of the present disclosure, the height of the gap 135 between the third main body portion 131 and the fourth main body portion 132 along the axial direction of the annular support frame 140 is h, and h satisfies the following relationship: h≧0.3mm. Therefore, the height of the gap 135 is sufficiently high. When making the bus bar assembly 100, the insulating layer 141 is formed by injecting insulating material into the gap 135. At this time, the insulating layer 141 can be made to have a sufficient thickness, so that the third bus bar 130 and the phase Adjacent bus bars have better insulation performance, which is beneficial to improve the insulation and withstand voltage performance of the bus bar assembly 100 .
参照图6，可以理解的是，第三汇流条130还设置有折弯部133，折弯部133沿着环形支撑架140的轴向延伸设置，或者折弯部133沿着与环形支撑架140的轴向呈夹角的方向延伸设置，夹角不大于90°，使得第三汇流条130呈Z形状，此时折弯部133能够由下一层的汇流条延伸至上一层的汇流条，从而使得折弯部133的两端能够分别连接位于相邻层的第三主体部131和 第四主体部132。Referring to FIG. 6 , it can be understood that the third bus bar 130 is also provided with a bent portion 133 , and the bent portion 133 is arranged along the axial extension of the annular support frame 140 , or the bent portion 133 is arranged along the axis of the annular support frame 140 . The axial direction of the axis is extended at an included angle, and the included angle is not greater than 90°, so that the third bus bar 130 is in a Z shape. At this time, the bent portion 133 can extend from the bus bar of the next layer to the bus bar of the upper layer, Thus, both ends of the bent portion 133 can be respectively connected to the third main body portion 131 and the fourth main body portion 132 located on adjacent layers.
需要说明的是，折弯部133、第三主体部131和第四主体部132可以采用一体成型制成。比如，制作第三汇流条130时，可以将铜板采用冲压成型的方式一体制成折弯部133、第三主体部131和第四主体部132，从而使得折弯部133、第三主体部131和第四主体部132之间的连接强度更好，同时加工更为方便。当然，也可以将折弯部133、第三主体部131和第四主体部132分别单独制作，然后再通过焊接等方式将折弯部133、第三主体部131和第四主体部132连接于一体。It should be noted that the bending portion 133 , the third main body portion 131 and the fourth main body portion 132 can be integrally formed. For example, when making the third bus bar 130, the copper plate can be formed into the bent part 133, the third main part 131 and the fourth main part 132 integrally by stamping, so that the bent part 133, the third main part 131 The connection strength with the fourth main body part 132 is better, and the processing is more convenient. Of course, the bending part 133, the third main body part 131 and the fourth main body part 132 can also be made separately, and then the bending part 133, the third main body part 131 and the fourth main body part 132 are connected to each other by welding or the like. One.
需要说明的是，第三汇流条130也可以通过导线将第四主体部132和第三主体部131连接，从而实现第四主体部132与第三主体部131的电性连接。比如，将铜线的两端分别焊接于第四主体部132和第三主体部131，从而将位于相邻层的第三主体部131和第四主体部132电性连接。It should be noted that the third bus bar 130 may also connect the fourth body part 132 and the third body part 131 through wires, so as to realize the electrical connection between the fourth body part 132 and the third body part 131 . For example, two ends of the copper wire are welded to the fourth main body 132 and the third main body 131 respectively, so as to electrically connect the third main body 131 and the fourth main body 132 located on adjacent layers.
参照图7，本公开第二方面实施例提供了一种定子总成，该定子总成包括定子组件200以及本公开第一方面实施例的汇流排组件100，汇流排组件100安装于定子组件200沿轴向的一端。具体的，汇流排组件100可以通过设置有卡接端子160等结构，从而使得汇流排组件100能够通过卡接端子160卡扣安装于定子组件200的端部，安装和拆卸均比较方便。Referring to FIG. 7 , the embodiment of the second aspect of the present disclosure provides a stator assembly, the stator assembly includes a stator assembly 200 and the bus bar assembly 100 of the embodiment of the first aspect of the present disclosure, the bus bar assembly 100 is installed on the stator assembly 200 along the axial end. Specifically, the bus bar assembly 100 can be provided with structures such as snap-in terminals 160 , so that the bus bar assembly 100 can be snap-mounted on the end of the stator assembly 200 through the snap-in terminals 160 , and the installation and disassembly are relatively convenient.
定子总成由于采用本公开第一方面实施例的汇流排组件100，该汇流排组件100通过将第三汇流条130的第三主体部131设于第一汇流条110的第一开口113，以及将第三汇流条130的第四主体部132设于第二汇流条120的第二开口123，从而可以有效利用第一汇流条110和第二汇流条120的闲置空间，减少汇流条的层数，从而有利于降低汇流排组件100的轴向尺寸，进而降低定子总成的轴向尺寸。Since the stator assembly adopts the bus bar assembly 100 of the embodiment of the first aspect of the present disclosure, the bus bar assembly 100 sets the third main body portion 131 of the third bus bar 130 in the first opening 113 of the first bus bar 110 , and The fourth main body 132 of the third bus bar 130 is arranged in the second opening 123 of the second bus bar 120, so that the idle space of the first bus bar 110 and the second bus bar 120 can be effectively used, and the number of layers of the bus bar can be reduced , so that it is beneficial to reduce the axial dimension of the bus bar assembly 100, and further reduce the axial dimension of the stator assembly.
需要说明的是，相关技术中，定子组件200通常采用整体铁芯进行绕线，绕线的槽满率比较低，影响电机的功率密度和性能的提升。为此，参照图8和图10，在本公开的一些实施例中，定子组件200由多个分块定子铁芯210以及分别绕设于相应分块定子铁芯210上的分块定子绕组220构成。本公开实施例通过将整体铁芯分割为多块分块定子铁芯210，有利于提高绕线的槽满率，有利于提升电机的功率密度和性能。It should be noted that, in the related art, the stator assembly 200 usually uses an integral iron core for winding, and the slot filling rate of the winding is relatively low, which affects the power density and performance improvement of the motor. To this end, referring to FIG. 8 and FIG. 10 , in some embodiments of the present disclosure, the stator assembly 200 consists of a plurality of segmented stator cores 210 and segmented stator windings 220 respectively wound on the corresponding segmented stator cores 210 constitute. In the embodiment of the present disclosure, by dividing the whole iron core into a plurality of segmented stator iron cores 210 , it is beneficial to improve the slot filling rate of the winding, and it is beneficial to improve the power density and performance of the motor.
可以理解的是，相关技术中，定子绕组的绕线通常为圆线，绕线时，圆线与圆线之间形成有较大的空隙，造成绕线的槽满率比较低，当定子组件200采用整体铁芯，并采用圆线进行绕线时，槽满率通常只有55％左右。为此，参照图9和图11，本公开的一些实施例在采用分块定子铁芯210的基础上，再采用横截面为长方形或正方形或腰圆形的线进行绕线，例如采用扁线进行绕线，从而可以大大降低绕线之间的空隙，提高绕线的槽满率，槽满率可以提升至77％左右，从而在不增加电机体积的条件下，能够进一步提升电机的功率密度和性能。It can be understood that in the related art, the winding wire of the stator winding is usually a round wire. When winding the wire, a large gap is formed between the round wire and the round wire, resulting in a relatively low slot fill rate of the winding. When the stator assembly 200 adopts integral iron core, and when round wire is used for winding, the slot full rate is usually only about 55%. For this reason, referring to FIG. 9 and FIG. 11 , some embodiments of the present disclosure use a segmented stator core 210 on the basis of using a wire with a rectangular or square or waist-circular cross section for winding, for example, a flat wire Winding can greatly reduce the gap between the windings and increase the slot filling rate of the winding. The slot filling rate can be increased to about 77%, so that the power density of the motor can be further improved without increasing the volume of the motor and performance.
需要说明的是，上述实施例中，参照图8和图9，每个分块定子铁芯210单独绕线时，每个分块定子绕组220具有两个接线端221，会导致定子组件200的接线端221比较多，因此需要汇流排组件100设置更多的连接部与接线端221进行连接，会导致汇流排的层数增加，而且会增加汇流排注塑工艺难度和降低注塑效率，从而增加汇流排的工艺制造成本。为此，在本公开的一些实施例中，参照图10和图11，同相绕组相邻槽之间的至少两个分块定子绕组220为单线串联绕组，使得同相绕组相邻槽之间的两个分块定子绕组220总共只有两个接线端221，从而大大减少定子组件200的接线端221的数量，从而简化了汇流排的结构设计，减少了接线端221的 焊接数量，有效提升了制造效率，同时还为焊接工艺提供了足够的操作空间，保证了焊接工艺的可行性。It should be noted that, in the above-mentioned embodiment, referring to FIG. 8 and FIG. 9 , when each segmented stator core 210 is individually wound, each segmented stator winding 220 has two terminals 221 , which will cause the stator assembly 200 to There are many terminals 221, so the busbar assembly 100 needs to be provided with more connecting parts to connect with the terminals 221, which will lead to an increase in the number of layers of the busbar, and will increase the difficulty of the busbar injection molding process and reduce the injection molding efficiency, thereby increasing the busbar assembly. Row process manufacturing cost. For this reason, in some embodiments of the present disclosure, referring to FIG. 10 and FIG. 11 , at least two segmented stator windings 220 between adjacent slots of the same-phase winding are single-wire series windings, so that the two segments between adjacent slots of the same-phase winding A block stator winding 220 has only two terminals 221 in total, thereby greatly reducing the number of terminals 221 of the stator assembly 200, thereby simplifying the structural design of the busbar, reducing the number of welding terminals 221, and effectively improving manufacturing efficiency. , At the same time, it also provides enough operating space for the welding process, ensuring the feasibility of the welding process.
具体的，以12槽10极电机为例：若每个分块定子铁芯210单独绕线时，则每个分块定子绕组220均具有2个接线端221，此时定子组件200共有24个接线端221，但若同相相邻槽的2个分块定子铁芯210采用串联绕线时，即同相相邻槽之间的2个分块定子绕组220为单线串联绕组，则每个分块定子绕组220仅有1个接线端221，定子组件200总共只有12个接线端221，可见，同相相邻槽之间的2个分块定子绕组220为单线串联绕组时，能够大大缩减定子组件200总体的接线端221数量。Specifically, take a 12-slot and 10-pole motor as an example: if each segmented stator core 210 is individually wound, each segmented stator winding 220 has two terminals 221, and the stator assembly 200 has 24 terminals in total. terminal 221, but if the two segmented stator cores 210 of the adjacent slots of the same phase are wound in series, that is, the two segmented stator windings 220 between the adjacent slots of the same phase are single-wire series windings, then each segment The stator winding 220 has only one terminal 221, and the stator assembly 200 has only 12 terminals 221 in total. It can be seen that when the two segmented stator windings 220 between adjacent slots in the same phase are single-wire series windings, the stator assembly 200 can be greatly reduced. Overall terminal 221 count.
本公开第三方面实施例提供了一种电机，该电机包括本公开第二方面实施例的定子总成。The embodiment of the third aspect of the present disclosure provides a motor, which includes the stator assembly of the embodiment of the second aspect of the present disclosure.
该电机由于采用本公开第二方面实施例的定子总成，定子总成的汇流排组件100通过将第三汇流条130的第三主体部131设于第一汇流条110的第一开口113，以及将第三汇流条130的第四主体部132设于第二汇流条120的第二开口123，从而可以有效利用第一汇流条110和第二汇流条120的闲置空间，减少汇流条的层数，从而有利于降低汇流排组件100的轴向尺寸，进而降低定子总成的轴向高度，有利于降低电机的轴向尺寸和体积，提高电机和整机的兼容适配性。Since the motor adopts the stator assembly according to the second aspect of the present disclosure, the bus bar assembly 100 of the stator assembly arranges the third main body portion 131 of the third bus bar 130 on the first opening 113 of the first bus bar 110 , And the fourth main body 132 of the third bus bar 130 is arranged in the second opening 123 of the second bus bar 120, so that the idle space of the first bus bar 110 and the second bus bar 120 can be effectively used, and the number of layers of the bus bar can be reduced. number, which is beneficial to reduce the axial dimension of the bus bar assembly 100, thereby reducing the axial height of the stator assembly, which is conducive to reducing the axial dimension and volume of the motor, and improving the compatibility and adaptability of the motor and the whole machine.
需要说明的是，为提高电机的效率，在本公开的一些实施例中，电机的极数为2p，槽数为Z，极数与槽数满足以下公式：|Z-2p|＝2。当电机的极数和槽数满足上述公式时，电机的基波绕组系数能够取得较高值，各低次谐波绕组系数取得较低值，因此能够在提高电机磁负荷的同时，有利于降低谐波磁场产生的噪音及谐波损耗，有利于提高电机的效率，且还能保证同相绕组有相邻槽，从而可实现多个分块定子铁芯210的串联绕线。It should be noted that, in order to improve the efficiency of the motor, in some embodiments of the present disclosure, the number of poles of the motor is 2p, the number of slots is Z, and the number of poles and the number of slots satisfy the following formula: |Z-2p|=2. When the number of poles and slots of the motor satisfies the above formula, the fundamental winding coefficient of the motor can take a higher value, and the winding coefficients of each low-order harmonic can take a lower value, so it can increase the magnetic load of the motor and help reduce The noise and harmonic loss generated by the harmonic magnetic field are conducive to improving the efficiency of the motor, and can also ensure that the same-phase winding has adjacent slots, so that the series winding of multiple segmented stator cores 210 can be realized.
本公开第四方面实施例提供了一种助力自行车，其包括本公开第三方面实施例的电机。The embodiment of the fourth aspect of the present disclosure provides an assist bicycle, which includes the motor of the embodiment of the third aspect of the present disclosure.
由于该助力自行车包括本公开第三方面实施例的电机，因此也具有本公开第三方面实施例的电机的全部有益效果，在此不再一一赘述。Since the power-assisted bicycle includes the motor according to the embodiment of the third aspect of the present disclosure, it also has all the beneficial effects of the motor according to the embodiment of the third aspect of the present disclosure, which will not be repeated here.
上面结合附图对本公开实施例作了详细说明，但是本公开不限于上述实施例，在所属技术领域普通技术人员所具备的知识范围内，还可以在不脱离本公开宗旨的前提下作出各种变化。The embodiments of the present disclosure have been described in detail above in conjunction with the accompanying drawings, but the present disclosure is not limited to the above embodiments, and various modifications can be made without departing from the purpose of the present disclosure within the scope of knowledge of those skilled in the art. Variety.

Claims (13)

  1. 汇流排组件，包括：Busbar assemblies, including:
    环形支撑架；ring support frame;
    第一汇流条，设有内嵌于所述环形支撑架的第一主体部，所述第一主体部沿所述环形支撑架的周向延伸并具有第一开口；The first bus bar is provided with a first main body part embedded in the annular support frame, and the first main body part extends along the circumferential direction of the annular support frame and has a first opening;
    第二汇流条，设有内嵌于所述环形支撑架的第二主体部，所述第二主体部沿所述环形支撑架的周向延伸并具有第二开口；以及The second bus bar is provided with a second main body embedded in the annular support frame, the second main body extends along the circumference of the annular support frame and has a second opening; and
    第三汇流条，设有第三主体部和第四主体部，所述第三主体部和所述第四主体部电性连接并内嵌于所述环形支撑架，所述第四主体部与所述第三主体部沿所述环形支撑架的轴向具有间隙；The third bus bar is provided with a third main body and a fourth main body, the third main body and the fourth main body are electrically connected and embedded in the annular support frame, and the fourth main body is connected to the fourth main body. The third body part has a gap along the axial direction of the annular support frame;
    其中，所述第一主体部与所述第二主体部沿所述环形支撑架的轴向间隔设置，且所述第一开口与所述第二开口沿所述环形支撑架的周向错开设置，所述第三主体部位于所述第一开口，所述第四主体部位于所述第二开口。Wherein, the first main body part and the second main body part are arranged at intervals along the axial direction of the annular support frame, and the first opening and the second opening are arranged staggered along the circumferential direction of the annular support frame , the third body part is located at the first opening, and the fourth body part is located at the second opening.
  2. 根据权利要求1所述的汇流排组件，其中，所述间隙沿所述环形支撑架的轴向的高度为h，所述h满足：h≥0.3mm。The busbar assembly according to claim 1, wherein the height of the gap along the axial direction of the annular support frame is h, and the h satisfies: h≧0.3mm.
  3. 根据权利要求1或2所述的汇流排组件，其中，所述第三汇流条还设有折弯部，所述折弯部的两端分别连接所述第三主体部和所述第四主体部。The bus bar assembly according to claim 1 or 2, wherein the third bus bar is further provided with a bent part, and two ends of the bent part are respectively connected to the third main body and the fourth main body department.
  4. 根据权利要求3所述的汇流排组件，其中，所述第三主体部、所述第四主体部和所述折弯部一体成型。The busbar assembly according to claim 3, wherein the third body part, the fourth body part and the bent part are integrally formed.
  5. 根据权利要求1所述的汇流排组件，其中，所述汇流排组件通过注塑工艺将所述第一汇流条、所述第二汇流条和所述第三汇流条包塑固定，并在相邻的汇流条之间形成绝缘层。The bus bar assembly according to claim 1, wherein the bus bar assembly fixes the first bus bar, the second bus bar and the third bus bar by plastic injection molding process, and the adjacent An insulating layer is formed between the bus bars.
  6. 定子总成，包括：Stator assembly, including:
    定子组件；以及stator assembly; and
    如权利要求1至5任一项所述的汇流排组件，其中所述汇流排组件安装于所述定子组件沿轴向的一端。The bus bar assembly according to any one of claims 1 to 5, wherein the bus bar assembly is mounted on one end of the stator assembly along the axial direction.
  7. 根据权利要求6所述的定子总成，其中，所述定子组件包括多个分块定子铁芯，以及绕设于所述分块定子铁芯的分块定子绕组。The stator assembly according to claim 6, wherein the stator assembly comprises a plurality of segmented stator cores, and a segmented stator winding wound around the segmented stator cores.
  8. 根据权利要求7所述的定子总成，其中，同相绕组相邻槽之间的至少两个所述分块定子绕组为单线串联绕组。The stator assembly according to claim 7, wherein at least two of said segmented stator windings between adjacent slots of the same-phase winding are single-wire series windings.
  9. 根据权利要求7所述的定子总成，其中，所述分块定子绕组的绕线的横截面为方形或腰圆形。The stator assembly according to claim 7, wherein the cross-section of the winding wires of the segmented stator windings is square or waist-circular.
  10. 根据权利要求6至9任一项所述的定子总成，其中，所述汇流排组件设有卡接端子，所述汇流排组件通过所述卡接端子卡接于所述定子组件。The stator assembly according to any one of claims 6 to 9, wherein the bus bar assembly is provided with a clamping terminal, and the bus bar assembly is clamped to the stator assembly through the clamping terminal.
  11. 电机，包括如权利要求6至10任一项所述的定子总成。A motor comprising the stator assembly as claimed in any one of claims 6 to 10.
  12. 根据权利要求11所述的电机，其中，所述电机的极数为2p，槽数为Z，所述极数与所述槽数满足：|Z-2p|＝2。The motor according to claim 11, wherein the number of poles of the motor is 2p, the number of slots is Z, and the number of poles and the number of slots satisfy: |Z-2p|=2.
  13. 助力自行车，包括如权利要求11或12所述的电机。The power-assisted bicycle comprises the motor according to claim 11 or 12.
PCT/CN2022/079110 2021-12-16 2022-03-03 Busbar assembly, stator assembly, electric motor, and power-assisted bicycle WO2023108919A1 (en)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
CN202123195700.5U CN216699655U (en) 2021-12-16 2021-12-16 Busbar assembly, stator assembly, motor and moped
CN202123195700.5 2021-12-16
CN202111545142.2 2021-12-16
CN202111545142.2A CN114362410A (en) 2021-12-16 2021-12-16 Busbar assembly, stator assembly, motor and moped

Publications (1)

Publication Number Publication Date
WO2023108919A1 true WO2023108919A1 (en) 2023-06-22

Family

ID=86775115

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2022/079110 WO2023108919A1 (en) 2021-12-16 2022-03-03 Busbar assembly, stator assembly, electric motor, and power-assisted bicycle

Country Status (1)

Country Link
WO (1) WO2023108919A1 (en)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2018133934A (en) * 2017-02-16 2018-08-23 株式会社ミツバ Brushless motor
CN109586472A (en) * 2017-09-28 2019-04-05 日本电产株式会社 Bus bar unit and motor
CN208738990U (en) * 2018-08-29 2019-04-12 日本电产株式会社 Bus bar unit, stator unit and motor
CN210183126U (en) * 2019-08-30 2020-03-24 日本电产株式会社 Bus bar assembly and motor including the same
CN113169617A (en) * 2018-11-28 2021-07-23 西门子歌美飒可再生能源公司 Stator for an electrical machine, wind turbine and method for manufacturing a stator

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2018133934A (en) * 2017-02-16 2018-08-23 株式会社ミツバ Brushless motor
CN109586472A (en) * 2017-09-28 2019-04-05 日本电产株式会社 Bus bar unit and motor
CN208738990U (en) * 2018-08-29 2019-04-12 日本电产株式会社 Bus bar unit, stator unit and motor
CN113169617A (en) * 2018-11-28 2021-07-23 西门子歌美飒可再生能源公司 Stator for an electrical machine, wind turbine and method for manufacturing a stator
CN210183126U (en) * 2019-08-30 2020-03-24 日本电产株式会社 Bus bar assembly and motor including the same

Similar Documents

Publication Publication Date Title
CN102163885B (en) Motor and its stator connector
CN101752928A (en) Electric machine stator component and electric machine
CN106059160B (en) Electric rotating machine
CN208479317U (en) Brshless DC motor, motor stator and its conflux disk
CN112467895A (en) Stator structure of motor, manufacturing method thereof and brushless motor with stator structure
CN210608719U (en) Flat wire stator of permanent magnet synchronous motor for vehicle
CN109301950B (en) Stator winding and disc motor
WO2023108919A1 (en) Busbar assembly, stator assembly, electric motor, and power-assisted bicycle
CN201623594U (en) Motor stator and motor comprising same
WO2023108913A1 (en) Stator assembly, motor, and power-assisted bicycle
CN218678607U (en) Wiring terminal assembly for stator winding, motor and power device
WO2020088148A1 (en) Coil connector and coil assembly
CN218868002U (en) Stator winding, stator and motor
CN218549588U (en) Stator module, motor and vehicle
CN114362404A (en) Stator assembly, motor and moped
CN113922552B (en) Flat wire hairpin type stator structure and motor
CN112467896A (en) Stator structure of motor, manufacturing method thereof and brushless motor with stator structure
KR101904287B1 (en) Winding method of brushlees motor with simple bus-bar structure
CN217282421U (en) Compact brushless motor
CN216699655U (en) Busbar assembly, stator assembly, motor and moped
WO2023108914A1 (en) Motor, power assembly, and power-assisted bicycle
CN216625419U (en) Stator assembly, motor and moped
CN209896795U (en) No-circulating-current four-branch phase winding, stator and motor
US11418081B2 (en) Motor stator for compressor, permanent magnet motor, and compressor
CN114362410A (en) Busbar assembly, stator assembly, motor and moped

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 22905690

Country of ref document: EP

Kind code of ref document: A1