CN110768410A - A flat wire stator of permanent magnet synchronous motor for vehicle - Google Patents
A flat wire stator of permanent magnet synchronous motor for vehicle Download PDFInfo
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- 230000001360 synchronised effect Effects 0.000 title claims abstract description 62
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 14
- 239000012212 insulator Substances 0.000 claims description 6
- 238000004519 manufacturing process Methods 0.000 abstract description 29
- 238000004804 winding Methods 0.000 description 19
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 8
- 238000010586 diagram Methods 0.000 description 5
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- 238000000034 method Methods 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 3
- 238000001746 injection moulding Methods 0.000 description 3
- 238000003780 insertion Methods 0.000 description 3
- 230000037431 insertion Effects 0.000 description 3
- WABPQHHGFIMREM-UHFFFAOYSA-N lead(0) Chemical compound [Pb] WABPQHHGFIMREM-UHFFFAOYSA-N 0.000 description 3
- 229910052802 copper Inorganic materials 0.000 description 2
- 239000010949 copper Substances 0.000 description 2
- 238000009826 distribution Methods 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K1/00—Details of the magnetic circuit
- H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
- H02K1/12—Stationary parts of the magnetic circuit
- H02K1/16—Stator cores with slots for windings
- H02K1/165—Shape, form or location of the slots
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K3/00—Details of windings
- H02K3/04—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
- H02K3/04—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
- H02K3/46—Fastening of windings on the stator or rotor structure
- H02K3/50—Fastening of winding heads, equalising connectors, or connections thereto
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Abstract
本发明提供了一种车用永磁同步电机扁线定子,属于电机技术领域。它解决了现有的电机定子生产效率较低的问题。本车用永磁同步电机扁线定子,包括定子铁芯和主线圈,定子铁芯上周向具有12n个线圈槽,n为正整数,每个线圈槽按定子铁芯径向依次分为4k层,k为正整数,且每相邻两层形成一个线圈槽组,主线圈沿定子铁芯径向设置成k个主线圈层,k个主线圈层分别对应k个线圈槽组,且主线圈的一端嵌入线圈槽组的外层,另一端嵌入线圈槽组的内层,k个主线圈层集中在连续的9n个线圈槽内,定子铁芯上设有用于将主线圈层并联的次线圈层和将主线圈层并联的两组引出线。本车用永磁同步电机扁线定子的结构能提高该种电机定子的生产效率。
The invention provides a flat wire stator of a permanent magnet synchronous motor for vehicles, which belongs to the technical field of motors. It solves the problem of low production efficiency of the existing motor stator. The flat wire stator of the permanent magnet synchronous motor for this vehicle includes a stator core and a main coil. The stator core has 12n coil slots in the circumferential direction, and n is a positive integer. Each coil slot is divided into 4k in turn according to the radial direction of the stator core. layer, k is a positive integer, and every two adjacent layers form a coil slot group, the main coil is arranged into k main coil layers along the radial direction of the stator core, and the k main coil layers correspond to k coil slot groups respectively, and the main coil layers are respectively corresponding to k coil slot groups. One end of the coil is embedded in the outer layer of the coil slot group, and the other end is embedded in the inner layer of the coil slot group. Coil layer and two sets of lead wires connecting the main coil layer in parallel. The structure of the flat wire stator of the permanent magnet synchronous motor used in the vehicle can improve the production efficiency of the motor stator.
Description
技术领域technical field
本发明属于电机技术领域,涉及一种电机定子,特别是一种车用永磁同步电机扁线定子。The invention belongs to the technical field of motors, and relates to a motor stator, in particular to a flat wire stator of a permanent magnet synchronous motor for vehicles.
背景技术Background technique
随着新能源电动汽车技术方面的发展,对于电动汽车驱动电机的性能要求也越来越高,驱动电机的功率密度要求不断提升。三相永磁同步电机与三相异步电机、开关磁阻电机等其他种类的电机相比,三相永磁同步电机拥有较高的效率区间、较小的结构尺寸、较高的功率密度等优点,使得三相永磁同步电机越来越受到电动汽车厂家的青睐。目前,新能源汽车驱动使用的三相永磁同步电机中的定子绕组普遍使用的为漆包圆铜线,随着高绕组密度的概念盛行,要求电机的槽满率越来越高,圆铜线应用技术已经难以满足驱动电机的新性能要求,性能瓶颈的问题悄然爆发,相比于圆铜线电机,扁铜线电机的槽满率要远远优于前者,这将大大降低铜线的损耗,进而有效降低电机的发热、提高效率。With the development of new energy electric vehicle technology, the performance requirements for electric vehicle drive motors are getting higher and higher, and the power density requirements of drive motors are constantly improving. Compared with other types of motors such as three-phase asynchronous motors and switched reluctance motors, three-phase permanent magnet synchronous motors have the advantages of higher efficiency range, smaller structural size, and higher power density. , making three-phase permanent magnet synchronous motors more and more favored by electric vehicle manufacturers. At present, the stator windings of the three-phase permanent magnet synchronous motors used in the drive of new energy vehicles are generally made of enameled round copper wires. The application technology has been difficult to meet the new performance requirements of the drive motor, and the problem of performance bottlenecks broke out quietly. Compared with the round copper wire motor, the slot full rate of the flat copper wire motor is much better than the former, which will greatly reduce the loss of copper wire , thereby effectively reducing the heat generation of the motor and improving the efficiency.
例如,中国专利网公开了一种扁线电机的定子结构【申请公布号:CN109149829A】,包括定子铁芯、定子绕组、出线端子和汇流排,定子绕组采用扁铜线进行绕制,汇流排固定在绕组焊接点处,与焊点电连接。For example, China Patent Net discloses a stator structure of a flat wire motor [Application Publication No.: CN109149829A], which includes a stator iron core, a stator winding, an outlet terminal and a bus bar. The stator winding is wound with a flat copper wire, and the bus bar is fixed. At the welding point of the winding, it is electrically connected to the welding point.
上述结构虽然能满足电机槽满率的要求,但是还是存在如下问题:该专利仅仅在定子铁芯上开设有多个线圈槽,且线圈槽上按定子铁芯径向依次分为2层,因此在设置定子绕组时,不会发生弯折,但是对于线圈槽内具有4层以及8层等结构时,上述结构并不能适用,造成了定子绕组内的线圈种类过多。而定子绕组在加工制造时,通过机器人依次将不同类型的定子线圈安装到定子铁芯上,使得定子绕组的制造工序繁多,定子绕组的制造效率低,不利于批量化生产,降低了电机定子的生产效率。Although the above structure can meet the requirements of the full rate of the motor slots, it still has the following problems: this patent only has a plurality of coil slots on the stator core, and the coil slots are divided into two layers in turn according to the radial direction of the stator core, so When arranging the stator winding, no bending will occur, but when there are 4-layer and 8-layer structures in the coil slot, the above structure is not applicable, resulting in too many types of coils in the stator winding. When the stator winding is processed and manufactured, different types of stator coils are sequentially installed on the stator core by the robot, which makes the manufacturing process of the stator winding numerous, and the manufacturing efficiency of the stator winding is low, which is not conducive to mass production and reduces the cost of the motor stator. Productivity.
为了提高定子绕组的制造效率和批量化生产,该领域一般能够想到的是将引出线集中分布,但是采用这种布置方式之后,定子线圈布置到定子铁芯的过程中会出现定子线圈发生交叉重叠的情况,使得定子线圈的布线方式复杂,而为了使定子线圈的布线方式简单,本领域能够想到的是降低定子线圈的种类,定子绕组上的若干个引出线沿定子绕组的周向分布,若干个引出线的分布比较分散,使得用于与引出线连接的汇流排的体积较大,一方面提高了汇流排加工制造的难度,另一方面导致电机的体积变大,进一步的降低了电机定子的生产效率。In order to improve the manufacturing efficiency and mass production of stator windings, it is generally conceivable in this field to distribute the lead wires in a concentrated manner, but after adopting this arrangement, the stator coils will be arranged in the process of stator cores. However, in order to make the wiring method of the stator coil simple, what can be thought in the art is to reduce the types of stator coils, and several lead wires on the stator winding are distributed along the circumferential direction of the stator winding, and some The distribution of the outgoing wires is relatively scattered, which makes the busbar used for connecting with the outgoing wires larger. production efficiency.
发明内容SUMMARY OF THE INVENTION
本发明的目的是针对现有的技术存在上述问题,提出了一种车用永磁同步电机扁线定子,本发明所要解决的技术问题是:如何提高电机定子的生产效率。The purpose of the present invention is to solve the above problems in the existing technology, and propose a flat wire stator for a permanent magnet synchronous motor for vehicles. The technical problem to be solved by the present invention is: how to improve the production efficiency of the motor stator.
本发明的目的可通过下列技术方案来实现:The object of the present invention can be realized through the following technical solutions:
一种车用永磁同步电机扁线定子,包括定子铁芯和主线圈,所述定子铁芯上周向具有12n个线圈槽,n为正整数,每个线圈槽按所述定子铁芯径向依次分为4k层,k为正整数,且每相邻两层形成一个线圈槽组,所述主线圈沿定子铁芯径向设置成k个主线圈层,k个主线圈层分别对应k个线圈槽组,且主线圈的一端嵌入线圈槽组的外层,另一端嵌入线圈槽组的内层,k个主线圈层集中在连续的9n个线圈槽内,所述定子铁芯上设有用于将主线圈层并联的次线圈层和将主线圈层并联的两组引出线,每组引出线均有3n个,每组引出线分别设置在另外的3n个线圈槽内。A flat wire stator for a permanent magnet synchronous motor for vehicles, comprising a stator iron core and a main coil, the stator iron core has 12n coil slots in the circumferential direction, n is a positive integer, and each coil slot is according to the diameter of the stator iron core It is divided into 4k layers in turn, k is a positive integer, and each adjacent two layers form a coil slot group, the main coils are arranged in k main coil layers along the radial direction of the stator core, and the k main coil layers correspond to k One end of the main coil is embedded in the outer layer of the coil slot group, and the other end is embedded in the inner layer of the coil slot group. The k main coil layers are concentrated in 9n consecutive coil slots. The stator core is provided with There are secondary coil layers for connecting the main coil layers in parallel and two groups of lead wires for connecting the main coil layers in parallel.
主线圈层分为四层,本线圈槽沿定子铁芯径向一共是分成了4k层,线圈槽组也分为k层,且每个线圈槽组内均具有两层,因此每两层为一个线圈槽组,此时每个主线圈层能嵌入到相应的线圈槽组内,因此上述的主线圈层仅仅是采用了一种线圈种类,使得主线圈层的生产方便;并通过次线圈层和两组引出线将k个主线圈层并联的方式,将k个主线圈层集中在9n个线圈槽内,可得出每个主线圈的两端均跨越相同的线圈槽设置,每层均预留出连续的3n个线圈槽的层位,通过在这连续的3n个线圈槽的层位内,可选择其中两组层位供引出线穿设,进而达到了将引出线集中设置的目的;采用上述的布线方式,既能达到主线圈层的生产方便,又能使得引出线能集中设置,降低了与引出线连接的汇流排的体积,一方面降低了汇流排加工制造的难度,另一方面缩小了电机的体积,进一步的提高了车用永磁同步电机扁线定子的生产效率。The main coil layer is divided into four layers, the coil slot is divided into 4k layers in total along the radial direction of the stator core, the coil slot group is also divided into k layers, and each coil slot group has two layers, so every two layers are A coil slot group, at this time each main coil layer can be embedded in the corresponding coil slot group, so the above-mentioned main coil layer only uses one type of coil, which makes the production of the main coil layer convenient; and through the secondary coil layer The k main coil layers are connected in parallel with two sets of lead wires, and the k main coil layers are concentrated in 9n coil slots. It can be concluded that both ends of each main coil are set across the same coil slot, and each layer is A continuous layer of 3n coil slots is reserved. In the layer of the continuous 3n coil slots, two sets of layers can be selected for the lead wires to pass through, thereby achieving the purpose of centrally setting the lead wires. The above wiring method can not only achieve the convenience of production of the main coil layer, but also make the lead wires can be centrally arranged, which reduces the volume of the bus bars connected to the lead wires. On the one hand, the volume of the motor is reduced, and the production efficiency of the flat wire stator of the permanent magnet synchronous motor for vehicles is further improved.
在上述的车用永磁同步电机扁线定子中,n为4,所述线圈槽具有48个,k为2,每个线圈槽按所述定子铁芯径向分为8层。In the above flat wire stator of permanent magnet synchronous motor for vehicles, n is 4, the coil slots have 48, k is 2, and each coil slot is divided into 8 layers in the radial direction of the stator core.
由于线圈槽具体是为48槽,因此主线圈的具体分布如下:第一层为该层的主线圈的两端分别设置在第一线圈槽组内,且主线圈的一端嵌入到线圈槽的第一层,主线圈的另一端嵌入到线圈槽的第二层,第二层为该层的主线圈的两端分别设置在第二线圈槽组内,且主线圈的一端嵌入到线圈槽的第三层,主线圈的另一端嵌入到线圈槽的第四层,第三层为该层主线圈的两端分别设置在第三线圈槽组内,且主线圈的一端嵌入到线圈槽的第五层,主线圈的另一端嵌入到线圈槽的第六层,第四层为该层主线圈的两端分别设置在第四线圈槽组内,且主线圈的一端嵌入到线圈槽的第七层,主线圈的另一端嵌入到线圈槽的第八层;因此上述的主线圈层仅仅是采用了一种线圈种类,可得出每个主线圈的两端均5个的线圈槽设置,使得主线圈在绕线时能更明确,从而能达到主线圈层的生产方便,能进一步的提高了车用永磁同步电机扁线定子的生产效率。Since the coil slot is specifically 48 slots, the specific distribution of the main coil is as follows: the two ends of the main coil whose first layer is this layer are respectively arranged in the first coil slot group, and one end of the main coil is embedded in the first coil slot. One layer, the other end of the main coil is embedded in the second layer of the coil slot, the second layer is the layer where the two ends of the main coil are respectively arranged in the second coil slot group, and one end of the main coil is embedded in the first layer of the coil slot. Three layers, the other end of the main coil is embedded in the fourth layer of the coil slot, the third layer is that the two ends of the main coil of this layer are respectively arranged in the third coil slot group, and one end of the main coil is embedded in the fifth layer of the coil slot. layer, the other end of the main coil is embedded in the sixth layer of the coil slot, the fourth layer is the layer where the two ends of the main coil are respectively arranged in the fourth coil slot group, and one end of the main coil is embedded in the seventh layer of the coil slot , the other end of the main coil is embedded in the eighth layer of the coil slot; therefore, the above-mentioned main coil layer only adopts one type of coil, and it can be concluded that each main coil has 5 coil slots at both ends, so that the main coil is The coil can be more definite when winding, so that the production convenience of the main coil layer can be achieved, and the production efficiency of the flat wire stator of the permanent magnet synchronous motor for vehicles can be further improved.
在上述的车用永磁同步电机扁线定子中,其中一组引出线设置在12个线圈槽中的最外层,另一组引出线设置在12个线圈槽中的最内层。In the above flat wire stator of permanent magnet synchronous motor for vehicles, one group of lead wires is arranged in the outermost layer of the 12 coil slots, and the other group of lead wires is arranged in the innermost layer of the 12 coil slots.
将两组引出线分别设置在线圈槽的最外层和最内层,方便了引出线的安装,使得引出线的设置位置更集中,减少了汇流排的体积,从而达到降低汇流排的生产难度和降低电机的体积作用,提高了车用永磁同步电机扁线定子的生产效率。且引出线集中,能进一步的降低铜线的损耗,增加车用永磁同步电机扁线定子的功率,提高其性能。Two sets of lead wires are arranged on the outermost layer and the innermost layer of the coil slot respectively, which facilitates the installation of the lead wires, makes the setting position of the lead wires more concentrated, reduces the volume of the bus bar, and reduces the production difficulty of the bus bar. And reduce the volume of the motor, improve the production efficiency of the flat wire stator of the permanent magnet synchronous motor for vehicles. In addition, the concentrated lead wires can further reduce the loss of copper wires, increase the power of the flat wire stator of the permanent magnet synchronous motor for vehicles, and improve its performance.
在上述的车用永磁同步电机扁线定子中,所述次线圈层包括次线圈层一,所述次线圈层一包括12个沿定子铁芯的周向间隔设置的次线圈一,每个次线圈一的一端插在其中一个线圈槽的第2层内,每个次线圈一的另一端插在另一个线圈槽的第3层内,每个次线圈一均跨越5个线圈槽。In the above-mentioned flat wire stator of permanent magnet synchronous motor for vehicles, the secondary coil layer includes a
次线圈层一能将剩余12个线圈槽中的第2层和第3层填满,且采用同一种次线圈一,使得整个次线圈层一的绕线高度相同,能实现即满足槽满率要求,又能使得次线圈层一的安装方便,进一步的提高了车用永磁同步电机扁线定子的生产效率。The
在上述的车用永磁同步电机扁线定子中,所述次线圈层包括次线圈层三,所述次线圈层三包括12个沿定子铁芯的周向间隔设置的次线圈三,每个次线圈三的一端插在其中一个线圈槽的第6层内,每个次线圈一的另一端插在另一个线圈槽的第7层内,每个次线圈三均跨越5个线圈槽。In the above-mentioned flat wire stator of a permanent magnet synchronous motor for a vehicle, the secondary coil layer includes a
次线圈层三能将剩余12个线圈槽中的第6层和第7层填满,且采用同一种次线圈三,使得整个次线圈层三的绕线高度相同,能实现即满足槽满率要求,又能使得次线圈层三的安装方便,进一步的提高了车用永磁同步电机扁线定子的生产效率。The
在上述的车用永磁同步电机扁线定子中,所述次线圈层包括次线圈层二,所述次线圈层二包括6个次线圈二和6个次线圈四,每个次线圈二的一端插在其中一个线圈槽的第4层内,每个次线圈二的另一端插在另一个线圈槽的第5层内,每个次线圈二均跨越4个线圈槽;每个次线圈四的一端插在其中一个线圈槽的第4层内,每个次线圈四的另一端插在另一个线圈槽的第5层内,每个次线圈四均跨越6个线圈槽。In the above-mentioned flat wire stator of permanent magnet synchronous motor for vehicles, the secondary coil layer includes
对次线圈二和次线圈四安装时,由于次线圈二均跨越4个线圈槽,次线圈四均跨越6个线圈槽,每个次线圈二均位于相应的次线圈四的下方,此时能进一步的降低次线圈二的绕线高度,进而能降低次线圈二的铜线损耗,次线圈层二仅是次线圈四露出,起到对次线圈二的保护作用,进一步的提高了车用永磁同步电机扁线定子使用的稳定性。When installing the
在上述的车用永磁同步电机扁线定子中,其中一组引出线、次线圈层一、次线圈层二、次线圈层三和另一组引出线依次沿定子铁芯的径向从外到内依次排列。In the above-mentioned flat wire stator of permanent magnet synchronous motor for vehicles, one group of lead wires, the first secondary coil layer, the second secondary coil layer, the third secondary coil layer and the other group of lead wires are in turn along the radial direction of the stator core from the outside. Arranged in order.
该结构的设置,使得两组引出线、次线圈层一、次线圈层二和次线圈层三排布方式简单,且在排列时不会出现交叉现象,进一步的提高了车用永磁同步电机扁线定子的生产效率。The arrangement of this structure makes the arrangement of the two groups of lead wires, the
在上述的车用永磁同步电机扁线定子中,本车用永磁同步电机扁线定子还包括有星点汇流排和三个三相汇流排,所述星点汇流排具有12个连接端子一,12个连接端子一与一组引出线一一对应并固定连接;每个三相汇流排上均具有4个连接端子二,12个连接端子二与另一组引出线一一对应并固定连接;所述星点汇流排均与三个三相汇流排电连接,每个三相汇流排上均连接有引出相线。In the above-mentioned flat wire stator of permanent magnet synchronous motor for vehicle, the flat wire stator of permanent magnet synchronous motor for vehicle also includes a star point busbar and three three-phase busbars, and the star point busbar has 12
星点汇流排能与12根引出线连接,而每个三相汇流排能与4根引出线连接,在车用永磁同步电机扁线定子运行时,12根引出线通过星点汇流排集成并与三相汇流排电连接,星点汇流排能将12根引出线汇集成一个点与三相汇流排连接,此时三相汇流排上均连接有4根引出线,再通过每个三相汇流排上连接的引出相线将其导出,进一步的提高了车用永磁同步电机扁线定子的功率。The star point busbar can be connected with 12 outgoing wires, and each three-phase busbar can be connected with 4 outgoing wires. When the flat wire stator of the permanent magnet synchronous motor for vehicles is running, the 12 outgoing wires are integrated through the star point busbar and integrated with the three outgoing wires. The phase busbars are electrically connected, and the star point busbar can combine 12 outgoing wires into one point and connect to the three-phase busbar. At this time, there are 4 outgoing wires connected to the three-phase busbars, which are then connected through each three-phase busbar. The lead-out phase wire of the fuselage leads to it, which further improves the power of the flat wire stator of the permanent magnet synchronous motor for vehicles.
在上述的车用永磁同步电机扁线定子中,所述星点汇流排上设置有温度传感器。In the above-mentioned flat wire stator of permanent magnet synchronous motor for vehicles, a temperature sensor is provided on the star point busbar.
该结构的设置,避免了电机在运行时温度过高而引起的电机损坏,提高了电机运行的稳定性。The arrangement of the structure avoids the motor damage caused by the high temperature of the motor during operation, and improves the stability of the motor operation.
在上述的车用永磁同步电机扁线定子中,本车用永磁同步电机扁线定子还包括与星点汇流排和三个三相汇流排注塑一体成型的绝缘体。In the above flat wire stator of permanent magnet synchronous motor for vehicle, the flat wire stator of permanent magnet synchronous motor for vehicle also includes an insulator integrally formed by injection molding with the star point busbar and the three three-phase busbars.
通过设置绝缘体,增强了星点汇流排和三个三相汇流排的绝缘效果,避免了出现短路现象,进一步的提高了车用永磁同步电机扁线定子使用的稳定性。By setting the insulator, the insulation effect of the star point busbar and the three three-phase busbars is enhanced, the short circuit phenomenon is avoided, and the stability of the flat wire stator of the permanent magnet synchronous motor for vehicles is further improved.
与现有技术相比,本发明的车用永磁同步电机扁线定子具有以下优点:Compared with the prior art, the flat wire stator of the permanent magnet synchronous motor for vehicles of the present invention has the following advantages:
1、通过设置有五种定子线圈种类,与现有技术相比显著降低了定子线圈的种类,减少了定子绕组的制造工序,提高了定子绕组的制造效率,有利于批量化生产,从而提高了车用永磁同步电机扁线定子的生产效率。1. By providing five types of stator coils, compared with the prior art, the types of stator coils are significantly reduced, the manufacturing process of stator windings is reduced, the manufacturing efficiency of stator windings is improved, and it is beneficial to mass production. Production efficiency of flat wire stators of permanent magnet synchronous motors for vehicles.
2、通过将两组引出线分别设置在线圈槽的最外层和最内层,方便了引出线的安装,使得引出线的设置位置更集中,减少了汇流排的体积,从而达到降低汇流排的生产难度和降低电机的体积作用,提高了车用永磁同步电机扁线定子的生产效率。2. By arranging the two groups of lead wires on the outermost layer and the innermost layer of the coil slot, the installation of the lead wires is facilitated, the setting position of the lead wires is more concentrated, and the volume of the bus bar is reduced, thereby reducing the size of the bus bar. It can reduce the production difficulty of the motor and reduce the volume of the motor, which improves the production efficiency of the flat wire stator of the permanent magnet synchronous motor for vehicles.
3、对次线圈二和次线圈四安装时,由于次线圈二均跨越4个线圈槽,次线圈四均跨越6个线圈槽,每个次线圈二均位于相应的次线圈四的下方,此时能进一步的降低次线圈二的绕线高度,进而能降低次线圈二的铜线损耗。3. When installing the
附图说明Description of drawings
图1是本车用永磁同步电机扁线定子的结构示意图。Figure 1 is a schematic diagram of the structure of the flat wire stator of the permanent magnet synchronous motor used in the vehicle.
图2是本车用永磁同步电机扁线定子中主线圈的结构示意图。FIG. 2 is a schematic structural diagram of the main coil in the flat wire stator of the permanent magnet synchronous motor used in the vehicle.
图3是本车用永磁同步电机扁线定子中主线圈层的俯视图。FIG. 3 is a top view of the main coil layer in the flat wire stator of the permanent magnet synchronous motor for the vehicle.
图4是本车用永磁同步电机扁线定子中次线圈层一装配后的俯视图。FIG. 4 is a top view of the
图5是本车用永磁同步电机扁线定子中次线圈层三装配后的俯视图。FIG. 5 is a top view of the
图6是本车用永磁同步电机扁线定子的次线圈层二中次线圈二装配后的俯视图。FIG. 6 is a top view of the
图7是本车用永磁同步电机扁线定子的次线圈层二中次线圈四装配后的俯视图。FIG. 7 is a top view of the
图8是本车用永磁同步电机扁线定子中星点汇流排、三相汇流排和定子铁芯安装后的部分结构示意图。8 is a partial structural schematic diagram of the star point busbar, the three-phase busbar and the stator iron core in the flat wire stator of the permanent magnet synchronous motor used in the vehicle after installation.
图9是本车用永磁同步电机扁线定子的部分结构示意图。FIG. 9 is a partial structural schematic diagram of the flat wire stator of the permanent magnet synchronous motor used in the vehicle.
图10是本车用永磁同步电机扁线定子上引出线装配后的结构示意图。Fig. 10 is a schematic diagram of the structure of the flat wire stator of the permanent magnet synchronous motor used in the vehicle after the lead wires are assembled.
图11是本车用永磁同步电机扁线定子中星点汇流排、三相汇流排和绝缘体注塑后的剖视图。11 is a cross-sectional view of the star point busbar, the three-phase busbar and the insulator in the flat wire stator of the permanent magnet synchronous motor for the vehicle after injection molding.
图中,1、定子铁芯;1a、线圈槽;2、主线圈层;21、主线圈;22、插入段;23、连接段;3、次线圈层一;31、次线圈一;4、次线圈层二;41、次线圈二;42、次线圈四;5、次线圈层三;51、次线圈三;6、引出线;9、星点汇流排;91、连接端子一;10、三相汇流排;101、连接端子二;11、引出相线;12、温度传感器;13、绝缘体。In the figure, 1, stator core; 1a, coil slot; 2, main coil layer; 21, main coil; 22, insertion section; 23, connecting section; 3, secondary coil layer one; 31, secondary coil one; 4, Secondary coil layer two; 41. Secondary coil two; 42. Secondary coil four; 5. Secondary coil layer three; 51. Secondary coil three; Three-phase bus bar; 101, connecting terminal two; 11, lead out phase line; 12, temperature sensor; 13, insulator.
具体实施方式Detailed ways
以下是本发明的具体实施例并结合附图,对本发明的技术方案作进一步的描述,但本发明并不限于这些实施例。The following are specific embodiments of the present invention and the accompanying drawings to further describe the technical solutions of the present invention, but the present invention is not limited to these embodiments.
如图1所示,本车用永磁同步电机扁线定子,包括定子铁芯1和主线圈21,定子铁芯1上具有48个线圈槽1a,每个线圈槽1a按定子铁芯1径向方向由内至外依次分为8层,线圈槽1a沿定子铁芯1的周向设置并形成四个线圈槽组,每个线圈槽组按定子铁芯1径向方向由内至外依次具有两层。As shown in Figure 1, the flat wire stator of the permanent magnet synchronous motor for this vehicle includes a
具体的说,如图1-11所示,主线圈21沿定子铁芯1的周向设置并形成四个主线圈层2,每个主线圈层2均能嵌入到相应的线圈槽组内,且每个主线圈层2内主线圈21的一端嵌入到相应的线圈槽组的外层,每个主线圈层2内主线圈21的另一端嵌入到相应的线圈槽组的内层,四个主线圈层2集中在36个线圈槽1a内,定子铁芯1上设有用于将主线圈层2并联的次线圈层和将主线圈层2并联的两组引出线6,定子铁芯1上还设有两组引出线6,每组引出线6均具有12个引出线6,每组引出线6均设置在连续的12个线圈槽1a内。Specifically, as shown in Figures 1-11, the
主线圈21为扁线圈,扁线能有效的提高定子槽满率,从而提高电机效率和功率密度。The
主线圈21具有两个可插入线圈槽1a的插入段22和与两个插入段22连接的连接段23,连接段可以制成三角形、梯形、W形、波浪形、拱形等都是可以的。The
主线圈层2分为四层,本线圈槽沿定子铁芯1径向一共是分成了8层,线圈槽组也分为四层,且每个线圈槽组内均具有两层,因此每两层为一个线圈槽组,此时每个主线圈层2能嵌入到相应的线圈槽组内,第一层为该层的主线圈21的两端分别设置在第一线圈槽组内,且主线圈21的一端嵌入到线圈槽1a的第一层,主线圈21的另一端嵌入到线圈槽1a的第二层,第二层为该层的主线圈21的两端分别设置在第二线圈槽组内,且主线圈21的一端嵌入到线圈槽1a的第三层,主线圈21的另一端嵌入到线圈槽1a的第四层,第三层为该层主线圈21的两端分别设置在第三线圈槽组内,且主线圈21的一端嵌入到线圈槽1a的第五层,主线圈21的另一端嵌入到线圈槽1a的第六层,第四层为该层主线圈21的两端分别设置在第四线圈槽组内,且主线圈21的一端嵌入到线圈槽1a的第七层,主线圈21的另一端嵌入到线圈槽1a的第八层;因此上述的主线圈层2仅仅是采用了一种线圈种类,使得主线圈层2的生产方便;并通过次线圈层和两组引出线6将四个主线圈层并联的方式,将四个主线圈层2集中在36个线圈槽内,可得出每个主线圈21的两端均跨越5个线圈槽1a设置,每层均预留出连续的12个线圈槽1a的层位,通过在这连续的12个线圈槽1a的层位内,可选择其中两组层位供引出线6穿设,进而达到了将引出线6集中设置的目的;采用上述的布线方式,既能达到主线圈层2的生产方便,又能使得引出线6能集中设置,降低了与引出线6连接的汇流排的体积,一方面降低了汇流排加工制造的难度,另一方面缩小了电机的体积,进一步的提高了车用永磁同步电机扁线定子的生产效率。The
如图8和图10所示,其中一组引出线6设置在12个线圈槽1a中的最外层,另一组引出线6设置在12个线圈槽1a中的最内层。As shown in FIG. 8 and FIG. 10 , one group of
如图4至图7和图9所示,次线圈层包括次线圈层一3,次线圈层一3包括12个沿定子铁芯1的周向间隔设置的次线圈一31,每个次线圈一31的一端插在其中一个线圈槽1a的第2层内,每个次线圈一31的另一端插在另一个线圈槽1a的第3层内,每个次线圈一31均跨越5个线圈槽1a。As shown in FIG. 4 to FIG. 7 and FIG. 9 , the sub-coil layer includes a sub-coil layer-3, and the sub-coil layer-3 includes 12 sub-coils-31 spaced along the circumferential direction of the
次线圈层包括次线圈层三5,次线圈层三5包括12个沿定子铁芯1的周向间隔设置的次线圈三51,每个次线圈三51的一端插在其中一个线圈槽1a的第6层内,每个次线圈一31的另一端插在另一个线圈槽1a的第7层内,每个次线圈三51均跨越5个线圈槽1a。The secondary coil layer includes a
次线圈层包括次线圈层二4,次线圈层二4包括6个次线圈二41和6个次线圈四42,每个次线圈二41的一端插在其中一个线圈槽1a的第4层内,每个次线圈二41的另一端插在另一个线圈槽1a的第5层内,每个次线圈二41均跨越4个线圈槽1a;每个次线圈四42,每个次线圈四42均跨越6个线圈槽1a。The secondary coil layer includes a
如图4-10所示,其中一组引出线6、次线圈层一3、次线圈层二4、次线圈层三5和另一组引出线6依次沿定子铁芯1的径向依次排列。As shown in Figure 4-10, one group of
如图10所示,本车用永磁同步电机扁线定子还包括有星点汇流排9和三个三相汇流排10,星点汇流排9具有12个连接端子一91,12个连接端子一91与其中12根引出线6一一对应,且每个连接端子一91均与相应的引出线6固定连接;每个三相汇流排10上均具有4个连接端子二101,每4个连接端子二101与剩余的12根引出线6中的4根引出线6一一对应,且每个连接端子二101均与相应的引出线6固定连接;星点汇流排9均与三个三相汇流排10电连接,每个三相汇流排10上均连接有引出相线11,星点汇流排9上设置有温度传感器12。As shown in FIG. 10 , the flat wire stator of the permanent magnet synchronous motor for this vehicle also includes a
位于第1层的引出线6和星点汇流排9和三个三相汇流排10共同将第1层的主线圈21并联,次线圈层一3和星点汇流排9和三个三相汇流排10共同将第2层和第3层的主线圈21并联,次线圈层二4和星点汇流排9和三个三相汇流排10共同将第4层和第5层的主线圈21并联,次线圈层三5和星点汇流排9和三个三相汇流排10共同将第6层和第7层的主线圈21并联,位于第8层的引出线6和星点汇流排9和三个三相汇流排10共同将第8层的主线圈21并联。The
如图7和图11所示,本车用永磁同步电机扁线定子还包括与星点汇流排9和三个三相汇流排10注塑一体成型的绝缘体13。As shown in FIG. 7 and FIG. 11 , the flat wire stator of the permanent magnet synchronous motor for the vehicle further includes an
本文中所描述的具体实施例仅仅是对本发明精神作举例说明。本发明所属技术领域的技术人员可以对所描述的具体实施例做各种各样的修改或补充或采用类似的方式替代,但并不会偏离本发明的精神或者超越所附权利要求书所定义的范围。The specific embodiments described herein are merely illustrative of the spirit of the invention. Those skilled in the art to which the present invention pertains can make various modifications or additions to the described specific embodiments or substitute in similar manners, but will not deviate from the spirit of the present invention or go beyond the definitions of the appended claims range.
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