CN205647047U

CN205647047U - Armature and be used for tip module of armature

Info

Publication number: CN205647047U
Application number: CN201620387573.9U
Authority: CN
Inventors: 杨飞
Original assignee: Shanghai Pusai Power Technology Co Ltd
Current assignee: Shanghai Shuang Yi Mdt InfoTech Ltd
Priority date: 2016-04-29
Filing date: 2016-04-29
Publication date: 2016-10-12
Anticipated expiration: 2026-04-29

Abstract

The utility model discloses an embodiment provides an armature, and it includes: the iron core, many independent plug wires, every the plug wire arrange respectively in in the corresponding recess of iron core, at least one tip module, be equipped with many circuit in the tip module, and the installation of tip module extremely on the axial tip of iron core to make corresponding plug wire pass through thereby corresponding circuit forms each other and electric the connection constitutes corresponding winding in the tip module. The utility model provides a tip module for the armature.

Description

Armature and the end module for armature

Technical field

This utility model relates to a kind of armature, forms the armature of winding especially with plug wire.This utility model further relates to a kind of end module for armature.

Background technology

Armature is to realize mechanical energy at motor to play the crucial and parts of pivotal role in the mutual transformation process of electric energy.For electromotor, it is the parts producing electromotive force, such as the rotor in DC generator or the stator in alternating current generator；For motor, it is the parts producing electromagnetic force, such as the rotor in dc motor.Armature divides DC armature and the two big classes that exchange armature, and they are respectively used to direct current generator and alternating current generator.

Armature mainly includes armature winding and armature core (iron core).Armature winding is induced potential, produce electromagnetic torque carries out the part of energy converting between mechanical.Armature core is a part and the support member of armature winding of main magnetic circuit, and armature winding is embedded in the groove of armature core.In other words, armature is the parts in motor equipped with winding conducting wire, and wire relative magnetic field moves, thus the wire in electromotor will produce induction electromotive force, and electrified wire in the motor will be rotated by Ampere force effect in magnetic field.

Conventional armature core is typically all manufactured with stalloy.Silicon steel is the steel of a kind of siliceous (silicon is also referred to as silicon), and its silicon content is 0.8～4.8%.Using silicon steel make the iron core of armature to be because silicon steel itself is the very capable magnetisable material of a kind of magnetic conduction, and in hot-wire coil, it can produce bigger magnetic induction, such that it is able to make the volume-diminished of armature.It addition, for the eddy-current loss reducing the armature for alternating current, the iron core of armature generally uses stalloy insulated from each other to build up, make eddy current in the loop of thin-and-long, by less cross section, to increase the resistance on eddy current path.Additionally, armature core is typically provided with numerous groove, it is used for arranging that wire forms winding coil.

Armature winding is connected according to certain rules by the armature coil of some and forms, and it is the circuit part of direct current generator, is also induced electromotive force, produces electromagnetic torque and carry out the part of energy converting between mechanical.The circle of coil insulation or the wire of square-section are coiled into, and a point upper and lower two-layer embeds in the groove of armature core, will properly insulate, and compress with slot wedge between levels coil and between coil and armature core.Coil is also referred to as element, and two effective edges that can cut magnetic flux induced electromotive force in the grooves of each element are referred to as component outline, and the part being positioned at outside groove of element does not cut magnetic flux, not induced electromotive force, referred to as end.Each element has two lead-out wires, and one is head end, and one is tail end.In the prior art, the coil constituting armature winding can be to be entwined along iron core by a continuous print wire, it is also possible to by first being formed being electrically connected to each other by plug wire in the groove of many independent plug wires insertion iron cores again.

Armature for prior art, the condition that technical staff wants to keeping its power and performance always makes it have the least size, thus can make the least motor, because the major obstacle currently hindering motor to be designed to small-sized is exactly the size of armature.To this end, technical staff has carried out multiple trial from design etc. the many aspects of the selection of armature material, armature structure, and have been achieved for certain achievement.It is apparent, however, that whole machine field is also desirable to armature can be designed to be less, especially with the generation of the newest technical need, the powerful armature of small size or motor become technical problem in the urgent need to address especially.Even it may be said that, the technological break-through of some industries is just being depending on providing sufficiently small armature or motor, the independent four-wheel technology of such as electric motor car industry, if it is intended to realize perfect independent four-wheel, for driving the motor of each wheel sufficiently small could must be mounted on wheel and provide enough driving force well.

Utility model content

One of the purpose of this utility model is to provide a kind of novel armature, and it can have less size in the case of providing equal-wattage.

For solving above-mentioned solution problem, the armature that an embodiment of the present utility model provides includes: iron core；Many independent plug wires, every described plug wire is respectively arranged in the corresponding groove of described iron core；At least one end module, a plurality of circuit it is provided with in described end module, and described end module is installed to the axial end portion of described iron core, so that corresponding plug wire mutually forms electrical connection by circuit corresponding in described end module thus constitutes corresponding winding.

The unique of prior art defect is recognized by of the present utility model making based on inventor.In the prior art, for composition coil or winding that the independent plug wire in armature is connected with each other, need by manually the end bending of each plug wire being arranged good and welded by corresponding plug wire.It will be appreciated that the process that plug wire is connected with each other of the prior art cannot to realize mechanization or automatization, inefficiency, and percent defective the highest.The most disadvantageously, owing to plug wire must keep insulation, so the end of plug wire angle of its bending when bending arrangement can not otherwise be easy to damage the insulating barrier of plug wire too greatly.But, the least bending angle can make the end of plug wire iron mandrel upwards oversize, so that the overall volume of armature is the biggest.This utility model people recognize, under given conditions, for armature coil, in order to keep power or the cutting magnetic flux of armature, the effective edge of plug wire must not reduce, and can only reduce the size of end.

For this, this utility model is creatively provided with end module in armature, a plurality of circuit it is provided with in described end module, described end module is installed to the axial end portion of described iron core, so that corresponding plug wire mutually forms electrical connection by circuit corresponding in described end module thus constitutes corresponding winding.It will be appreciated that the circuit in this end module can provide the circuit between plug wire end of the prior art, thus realize circuit function same as the prior art.The particularly important is, owing to end module is made in advance, its internal circuit can be arranged by the technology of various maturations of the prior art, such as integrated circuit technique, so that end module can be manufactured with the least size (iron mandrel is upwards), this can reduce the size of armature effectively.Electrically connect additionally, due to can be formed between end module with plug wire by the technology of various maturations of the prior art, such as automatic welding technique, it is not necessary to plug wire is implemented any bending, it is possible to be effectively improved production efficiency and yield rate.

Preferably, described end module has the structure of integration, thus provides the compactest and reliable structure.Further, described end module is preferably in flat, to provide in iron mandrel's the least size upwards.

Preferably, described end module is provided with multiple pad, and each pad corresponds to a corresponding plug wire, and every plug wire forms electrical connection by corresponding pad with corresponding circuit.Further, described pad is preferably connected to corresponding plug wire by welding.Further, described pad preferably includes welding ends and circuit end, and described welding ends is exposed to the surface of described end module and is electrically connected with the formation of described plug wire by welding, and described circuit end is internal at described end module and corresponding circuit forms electrical connection.

Preferably, described end module also includes heat-conducting layer, and when end module is installed to iron core, described heat-conducting layer is against described iron core.

Preferably, described end module is provided with multiple perforate, and every described plug wire is through a corresponding perforate.

Preferably, described plug wire is substantially in straight strip.Further, at least one end module described preferably includes first end module and the second end module, and this first end module and the second end module are separately mounted to two axial end portions of described iron core.

Preferably, described plug wire is substantially u-shaped, and includes two straightways and a bending section, and wherein said straightway inserts the inside of the corresponding groove of described iron core, and described bending section is positioned at the outside of described groove.Closer, the end module that at least one end module described is preferably mounted on an axial end portion of described iron core.

Also providing for a kind of end module for armature according to an embodiment of the present utility model, described armature includes: iron core；Many independent plug wires, every described plug wire is respectively arranged in the corresponding groove of described iron core；It is provided with a plurality of circuit in described end module, and described end module is installed to the axial end portion of described iron core, so that corresponding plug wire mutually forms electrical connection by circuit corresponding in described end module thus constitutes corresponding winding.

Preferably, described end module has the structure of one.Further, described end module is preferably in flat.

Preferably, described end module is provided with multiple pad, and each pad corresponds to a corresponding plug wire, and every plug wire forms electrical connection by corresponding pad with corresponding circuit.Further, described pad is preferably connected to corresponding plug wire by welding.

Preferably, described pad includes that welding ends and circuit end, described welding ends are exposed to the surface of described end module and form electrical connection by welding with corresponding plug wire, and described circuit end forms electrical connection in described end module inside with corresponding circuit.

Advantage of the present utility model is in particular, in that the size of armature can be reduced effectively, and can be effectively improved production efficiency and yield rate.

Other features of the present utility model and beneficial effect can be more clearly understood from by the following detailed description and accompanying drawing content.

Accompanying drawing explanation

Below with reference to accompanying drawing, detailed description of the invention of the present utility model is described in detail.

Figures 1 and 2 show that the schematic perspective view of armature according to a specific embodiment of the present utility model, wherein the armature shown in Fig. 1 is in assembled state, and Fig. 2 is the decomposing schematic representation of this armature.

Fig. 3 and Fig. 4 shows the iron core of armature shown in Fig. 1, and wherein Fig. 3 is the schematic perspective view of iron core, and Fig. 4 is the top view of this iron core.

Fig. 5 and Fig. 6 shows the arrangement schematic diagram of the plug wire in the armature of Fig. 1, and wherein Fig. 5 is the schematic perspective view of plug wire arrangement, and Fig. 6 is its top view.

Fig. 7 and Fig. 8 shows the arrangement schematic diagram of the insulating paper in the armature of Fig. 1, and wherein Fig. 5 is the schematic perspective view of insulating paper arrangement, and Fig. 8 is its top view.

Fig. 9 and Figure 10 shows the schematic diagram of the end module of the armature of Fig. 1, and wherein Fig. 9 is the schematic perspective view of end module, and Figure 10 is the top view of end module.

Figure 11 shows the enlarged diagram of the axial sectional view of end module shown in Fig. 9, partial content therein is omitted can clearly and concisely illustrate the internal structure of end module, particularly illustrates the electrical connection between plug wire circuit corresponding with in end module.

Figure 12 shows a radial cross-section of end module shown in Fig. 9.

Figure 13 a-13d shows the plug wire of the multiple illustration that can be used for armature shown in Fig. 1.

Figure 14 a-14e illustrates the method for a kind of illustration for armature shown in installation diagram 1.

Figure 15 shows the armature according to another embodiment of the present utility model.

Figure 16 shows the armature according to another embodiment of the present utility model.

Detailed description of the invention

See Fig. 1 and Fig. 2, it illustrates the schematic perspective view of armature 60 according to a specific embodiment of the present utility model, wherein figure 1 illustrate armature 60 and be in assembled state, and the decomposing schematic representation that Fig. 2 is this armature 60.It can be seen that this armature 60 includes iron core 10, two axial end portions of iron core 10 are each provided with an end module 30 (30 ').Armature 60 shown in Fig. 1 also includes numerous plug wire 20, and these plug wires 20 are arranged in the groove 11 (Fig. 3) of iron core 10 and are each passed through corresponding end module 30 (30 ') at two ends.These plug wires 20 are electrically connected to each other by the corresponding circuit in described end module and constitute complete winding, and the most each winding all includes the plug wire that two projecting end modules are more, and this plug wire is used as the lead-out wire of each winding.As we can see from the figure, this armature has six roots of sensation lead-out wire, say, that, it is illustrated that armature there are three windings, each winding is electrically connected to each other by circuit corresponding in two end modules by many plug wires and constitutes coil, the most each winding there are two lead-out wires.It can also be seen that every plug wire 20 is not directly to contact with iron core, or be coated with by insulating paper 40 in the groove of iron core 10 from Fig. 2, this most also will be described further.

With further reference to Fig. 3 and Fig. 4, it illustrates the iron core 10 of armature shown in Fig. 1, wherein Fig. 3 is the schematic perspective view of iron core 10, and Fig. 4 is the top view of this iron core 10.This iron core 10 is formed by stacking by multiple stalloys, each stalloy mutually insulated.Each stalloy is provided with multiple groove 11, is used for arranging plug wire 20.The material of iron core 10 can also use other the suitable materials in addition to stalloy, such as: pure iron, mild steel, without silicon steel, iron-nickel alloy, ferroaluminium, amorphous alloy, microcrystallizing alloy etc..It will be understood by those skilled in the art that different materials so that iron core 10 has different performances, and then suitable material can be selected to make according to the specifically used environment of armature.

With further reference to Fig. 5 and Fig. 6, it illustrates the arrangement schematic diagram of plug wire 20 in armature shown in Fig. 1, wherein Fig. 5 is the schematic perspective view of plug wire 20 arrangement, and Fig. 6 is its top view.It can be seen that these plug wires 20 are substantially coaxially arranged, and there is between plug wire 20 substantially uniform spacing.But, those skilled in the art are it will be appreciated that the arrangement of these plug wires can also have other different configurations.

With further reference to Fig. 7 and Fig. 8, it illustrates the arrangement schematic diagram of insulating paper 40 in the armature of Fig. 1, wherein Fig. 5 is the schematic perspective view of insulating paper 40 arrangement, and Fig. 6 is its top view.As it was noted above, every plug wire is arranged in the groove of iron core, however, to ensure that the insulation between plug wire and between plug wire and iron core, every plug wire is all wrapped up by insulating paper 40.Under normal circumstances, the sheet fold that insulating paper 40 is had insulating property (properties) by individual becomes to have the cross section roughly the same with plug wire 20.The material of insulating paper 40 and method for folding are well known to art technology.It can be seen that these insulating papers 40 folded substantially coaxially are arranged, and having substantially uniform spacing between insulating paper 40, this is consistent with the plug wire 20 layout in iron core 10.Similarly, those skilled in the art are it will be appreciated that the arrangement of these insulating papers 40 can also have other different configurations accordingly from plug wire 20.

With further reference to Fig. 9 and Figure 10, it illustrates the schematic diagram of the end module 30 of the armature 60 shown in Fig. 1, wherein Fig. 9 is the schematic perspective view of end module 30, and Figure 10 is the top view of end module 30. Although owing to the end module 30 shown in Fig. 1 and end module 30 ' have difference in concrete circuit design, but both have identical principle and organization plan, so those skilled in the art are after the structure understanding one of them end module and principle, also will of course be appreciated that design requirement and the particular content of another end module.To this end, for simplicity, one of them end module 30 is only introduced.As it can be seen, end module 30 is integrally formed as substantially in pancake ring-type, its internal diameter and external diameter are substantially uniform with iron core 10.Being provided with numerous perforate 31 vertically on end module 30, these perforates 31 extend there through for plug wire 20.The position of each perforate 31 is corresponding with the plug wire 20 position in iron core 10.Each perforate 31 is provided with a pad 32, this pad 32 is for electrically connecting by soldering tip 33 (Figure 11) formation with plug wire 20, thus electrically connect with circuit 34 (Figure 11) formation in end module 30 via pad 32 further, this will be done further detailed description by the content after this paper.

With further reference to Figure 11, it illustrates the enlarged diagram of the axial sectional view of end module 30 shown in Fig. 9, partial content therein is omitted can clearly and concisely illustrate the electrical connection between the internal structure of end module 30, especially plug wire 20 circuit 34 corresponding with in end module.As it can be seen, in the axial direction of end module 30, include pad layer, circuit layer, heat-conducting layer 35 the most respectively.Pad layer is made up of multiple independent pads 32, and pad 32 is made up of conductive material.As shown in the figure, described pad 32 includes welding ends 36 and circuit end 37, described welding ends 36 is exposed to the surface of described end module 30, can be formed with described plug wire 20 when assembling armature electrically connected by the soldering tip 33 that formed by welding, described circuit end 37 is internal at described end module 30 and a corresponding circuit 34 formation electrically connects.Illustrate only two circuit layers in figure, each circuit layer includes multiple independent circuit 34, but the quantity of circuit layer can be different as desired, and this depends on the connection needs between plug wire 20.Being provided with insulating barrier between each layer, insulating barrier can be insulating cement as required, or is chosen as non-conductive fibre can also prevent from causing because of overheated the forfeiture of insulation while providing electric insulation.Described heat-conducting layer 35 is positioned at another surface relative with pad 32 layers of end module 30, and when end module 30 is installed to iron core 10, described heat-conducting layer 35 is against described iron core 10.

With further reference to Figure 12, it illustrates a radial cross-section of end module 30 shown in Fig. 9.As can be seen from the figure, numerous circuit 34 it is disposed with in end module 30, these circuit 34 circuit end 36 with corresponding pad 32 respectively electrically connects, thus when two plug wires 20 are electrically connected by soldering tip 33 formation with the welding ends 36 of respective pad 32 respectively, these two plug wires 20 are i.e. connected with each other by this circuit 34 in end module 30.Owing to the two ends of the iron core 10 of described armature 60 are respectively arranged with an end module, one end of plug wire 20 will be electrically connected with other plug wire formation by circuit corresponding in the end module corresponding to this end, and another end of this plug wire will be electrically connected with the formation of another root plug wire by the corresponding circuit in another corresponding end module, thus, many plug wires can be connected in turn by the corresponding circuit in two end modules 30 and 30 ', until being connected to two longer plug wires 20 (see Fig. 1) as lead-out wire, thus constitute a complete coil (winding).Circuit 34 within end module 30 can be arranged by various technology of the prior art, such as printed circuit or integrated circuit technique, so that end module 30 can be manufactured with the least size (iron core 10 axially on), this can reduce the size of armature 60 effectively.It is connected additionally, due to end module can be made to form circuit with plug wire by the technology of various maturations of the prior art, such as automatic welding technique, it is not necessary to plug wire is implemented any bending, it is possible to be effectively improved production efficiency and yield rate.

With further reference to Figure 13 a-13d, it illustrates the plug wire 20 of the multiple illustration that can be used for armature 60 shown in Fig. 1.As it can be seen, these plug wires are the most substantially rectilinear, difference is the configuration of its end, and wherein the plug wire of Figure 13 a has fish hooked end, and the plug wire of 13b has eyes type end, and the plug wire of 13c has Y type end, and the plug wire of 13d has fisheye type end.These end configurations may be used for an end of plug wire, it is also possible to for two ends of plug wire, and plug wire can also be chosen as other suitable end configurations to meet specific needs, such as facilitates welding etc..Additionally, it will be apparent to one skilled in the art that plug wire has various suitable cross section, but preferably there is the flat plug wire of square cross section.

Referring next to Figure 14 a-14e, it illustrates the method for a kind of illustration for armature shown in installation diagram 1.In Figure 14 a, it is provided that iron core 10；In Figure 14 b, in each groove 11 of iron core 10, insulating paper 40 is arranged in distribution；In Figure 14 c, each plug wire 20 is inserted respectively in the insulating paper 40 of correspondence；In Figure 14 d, an end module 30 being installed an end to iron core 10, wherein every plug wire 20 inserts in perforate 31 corresponding in end module 30 respectively, and is welded by the welding ends of pad 32 corresponding with on end module 30 for the corresponding end of plug wire 20；In Figure 14 e, another end module 30 ' is installed another end to iron core 10, similarly, every plug wire 20 inserts in perforate corresponding in end module 30 ' respectively, and by the welding ends welding of upper with end module 30 ' for the corresponding end of plug wire 20 corresponding pad.It is to be designed according to the winding of required formation that the circuit of each end module is arranged, and those skilled in the art can design corresponding circuit according to described winding.It will be appreciated that arrange based on the circuit in end module, corresponding plug wire can mutually form electrical connection by circuit corresponding in described end module thus constitute corresponding winding.By the technology of various maturations of the prior art, with plug wire, end module can be formed circuit to be connected, such as automatic welding technique.Owing to the method is without implementing any bending to plug wire, it is possible to be effectively improved production efficiency and yield rate.

Figure 15 shows the armature 60 according to another embodiment of the present utility model.As it can be seen, this armature 60 is similar with embodiment illustrated in fig. 1, it may have iron core 10, the plug wire 20 being arranged in iron core 10 groove and end module 30.Wherein, the iron core 10 in the armature 60 shown in Figure 15 and end module 30 have identical configuration and function with the armature shown in Fig. 1.But, armature shown in Figure 15 differs primarily in that with armature shown in Fig. 1, plug wire 20 is generally U-shaped, it includes two straightways 21 and a bending section 22, the most each straightway 21 is arranged in a described groove, bending section 22 is positioned at outside groove, and correspondingly, this armature is only provided with an end module 30 on an axial end portion of described iron core 10.It will be appreciated that owing to this armature is used U-shaped plug wire, plug wire needs only to be connected to each other an end can be formed by complete coil or winding, thus this armature only need to arrange an end module on one end the most permissible.

Figure 16 shows armature 60 according to still another embodiment of the invention.As it can be seen, this armature 60 is similar with embodiment illustrated in fig. 15, it may have iron core 10, the plug wire 20 being arranged in iron core 10 groove and end module 30.Wherein, the iron core in the armature shown in Figure 16 and plug wire with shown in Figure 15, there is identical configuration and function.But, armature shown in Figure 16 differs primarily in that with armature shown in Figure 15, is not connected with each other by end module between the end of plug wire 20, but by common such as turning one's head, the mode such as welding is connected with each other in the end of plug wire.On the contrary, be provided with an end module 30 ' on an end of iron core 10, this end module 30 ' is used only for being coupled together some specific plug wires by specific circuit, plays the effect of special-shaped wire (such as punctate opacity of the cornea line, intercoil connection etc.).

Above by accompanying drawing and preferred embodiment, this utility model having carried out detail display and explanation, but this utility model is not limited to these embodiments, other schemes that those skilled in the art therefrom derive are also within protection domain of the present utility model.

Claims

1. an armature (60), including:

Iron core (10)；

Many independent plug wires (20), every described plug wire (20) is respectively arranged in the corresponding groove (11) of described iron core (10)；

It is characterized in that, also include:

At least one end module (30,30 '), described end module (30,30 ') a plurality of circuit (34) it is provided with in, and described end module (30,30 ') install to the axial end portion of described iron core (10), so that corresponding plug wire (20) mutually forms electrical connection by circuit (34) corresponding in described end module (30,30 ') thus constitutes corresponding winding.

Armature the most according to claim 1, it is characterised in that described end module (30,30 ') is configured of the structure of one.

Armature the most according to claim 2, it is characterised in that described end module (30,30 ') is in flat.

Armature the most according to claim 1, it is characterized in that, described end module (30,30 ') multiple pad (32) it is provided with, each pad (32) corresponds to a corresponding plug wire (20), and every plug wire (20) forms electrical connection by corresponding pad (32) with corresponding circuit (34).

Armature the most according to claim 4, it is characterised in that described pad (32) is connected to corresponding plug wire (20) by welding.

Armature the most according to claim 4, it is characterized in that, described pad (32) includes welding ends (36) and circuit end (37), described welding ends (36) is exposed to described end module (30,30 ') surface being formed with described plug wire (20) by welding is electrically connected, described circuit end (37) forms electrical connection in described end module (30,30 ') inside with corresponding circuit (34).

Armature the most according to claim 1, it is characterized in that, described end module (30,30 ') heat-conducting layer (35) is also included, when end module (30,30 '), when installing to iron core (10), described heat-conducting layer (35) is against described iron core (10).

Armature the most according to claim 1, it is characterised in that described end module (30,30 ') is provided with multiple perforate (31), and every described plug wire (20) is through a corresponding perforate (31).

Armature the most according to claim 1, it is characterised in that described plug wire (20) is substantially in straight strip.

Armature the most according to claim 9, it is characterized in that, at least one end module (30 described, 30 ') including first end module (30) and the second end module (30 '), this first end module (30) and the second end module (30 ') are separately mounted to two axial end portions of described iron core (10).

11. armatures according to claim 1, it is characterized in that, described plug wire (20) is substantially u-shaped, and include two straightways (21) and a bending section (22), wherein said straightway (21) inserts the inside of the corresponding groove (11) of described iron core (10), and described bending section (22) is positioned at the outside of described groove (11).

12. armatures according to claim 11, it is characterised in that described at least one end module (30,30 ') is the end module (30 ') being arranged on an axial end portion of described iron core (10).

13. 1 kinds of end modules (30,30 ') for armature (60), described armature (60) including:

Iron core (10)；

It is characterized in that, described end module (30,30 ') a plurality of circuit (34) it is provided with in, and described end module (30,30 ') install to the axial end portion of described iron core (10), so that corresponding plug wire (20) mutually forms electrical connection by circuit (34) corresponding in described end module (30,30 ') thus constitutes corresponding winding.

14. end modules according to claim 13, it is characterised in that described end module (30,30 ') has the structure of one.

15. end modules according to claim 14, it is characterised in that described end module (30,30 ') is in flat.

16. end modules according to claim 13, it is characterized in that, described end module (30,30 ') multiple pad (32) it is provided with, each pad (32) corresponds to a corresponding plug wire (20), and every plug wire (20) forms electrical connection by corresponding pad (32) with corresponding circuit (34).

17. end modules according to claim 16, it is characterised in that described pad (32) is connected to corresponding plug wire (20) by welding.

18. end modules according to claim 16, it is characterized in that, described pad (32) includes welding ends (36) and circuit end (37), described welding ends (36) is exposed to described end module (30,30 ') surface also forms electrical connection by welding with corresponding plug wire (20), described circuit end (37) forms electrical connection in described end module (30,30 ') inside with corresponding circuit (34).

19. end modules according to claim 13, it is characterized in that, described end module (30,30 ') heat-conducting layer (35) is also included, when end module (30,30 '), when installing to iron core (10), described heat-conducting layer (35) is against described iron core (10).

20. end modules according to claim 13, it is characterised in that described end module (30,30 ') is provided with multiple perforate (31), and every described plug wire (20) is through a corresponding perforate (31).