CN107146688A

CN107146688A - Winding

Info

Publication number: CN107146688A
Application number: CN201611185988.9A
Authority: CN
Inventors: K.库尔; B.维尔曼; D.奥托
Original assignee: Volkswagen AG
Current assignee: Volkswagen AG
Priority date: 2016-03-01
Filing date: 2016-12-20
Publication date: 2017-09-08
Anticipated expiration: 2036-12-20
Also published as: DE102016203350A1; DE102016203350B4; CN107146688B

Abstract

The present invention relates to a kind of winding (30), wherein, the winding (30) has two iron cores (31, 33) with winding wire (35), wherein, the winding wire (35) is respectively with least one coil (36, 37) corresponding iron core (31 is surrounded, 33) wind, wherein, at least one is in reverse at least one coiling direction around the coil (37) of other iron cores (33) around the coiling direction of the coil (36) of the first iron core (31), wherein, first iron core (31) is designed as hollow cylinder (32), second iron core (33) is designed as solid cylinder (34) or hollow cylinder, wherein, external diameter (the d of second iron core (33)_a) it is less than the internal diameter (d of the first iron core (31)_i), wherein, the second iron core (33) is concentrically arranged at the inside of the first iron core (31).

Description

Winding

Technical field

The present invention relates to a kind of winding.

Background technology

The preferred application area of winding is inductance type transmission of electricity, such as in the inductance type charging system of electric automobile Transmission of electricity.Here, electric energy is transferred to the secondary windings being placed in motor vehicle by armature winding.

Here, the deformation program of known different windings.One embodiment advises the circular winding as armature winding.Circle The advantage of shape winding is that the circular winding produces rotationally symmetrical field distribution.This causes, motor vehicle determining in the horizontal direction To not being critically important, as long as ensureing that two windings have less spacing and preferably overlapping.Thus advantage is, motor vehicle manufacture Business has the larger free degree in terms of the arrangement of the charging panel of supporting secondary windings and secondary windings can be made for example to rotate 90 ° of loadings.The disadvantage is that, circular winding only has less induction field, therefore cause very big leakage field.This causes very big Lose and because leakage field is to the undesirable heating of neighbouring vehicle part.

Alternative embodiment is so-called DD windings.DD windings have two iron cores and winding wire being arranged side by side, its In, winding wire distribution surrounds corresponding iron core with least one coil.Here, at least one volume around the coil of the first iron core At least one coiling direction around the coil of another iron core is in reverse to around direction.This realizes preferable induction field, so that Reduce leakage field.The disadvantage is that, the horizontal orientation of secondary windings has conclusive influence on efficiency now, because the field produced is not It is rotationally symmetrical.Which has limited arrangement of the charging panel in vehicle, and improve in secondary windings relative to armature winding Consuming during orientation.

The content of the invention

The technical problems to be solved by the invention are to provide a kind of winding, and the winding has higher relative to circular winding Efficiency and more tolerant in terms of the orientation of secondary windings.

The technical problem is solved according to the present invention by a kind of winding, wherein, winding has two iron cores and winding wire. Here, winding wire surrounds corresponding coiling iron core with least one coil respectively.Here, at least one surrounds the line of the first iron core The coiling direction of circle is in reverse at least one coiling direction around the coil of another iron core.Here, the first core design is Hollow cylinder, the second core design is solid cylinder or hollow cylinder.Here, the external diameter of the second iron core is less than the first iron The internal diameter of core.Here, the second iron core is concentrically arranged at the inside of the first iron core.Hereby it is achieved that rotationally symmetrical induction field, I.e., it has no accordingly realizing the advantage of circular coil and DD coils to shortcoming.Here, hollow cylinder or solid cylinder The statement of body also includes for example having the structure of rounding in arris or has the structure of other designs in outer peripheral face.It is this to set Meter for example can be groove or groove, and winding wire is guided in the groove or groove.Here, the second iron core is preferably solid cylinder Body.It is simpler for manufacturing technology but the embodiment being also contemplated that is, hollow cylinder of the manufacture with very small internal diameter Body.

In one embodiment, the quantity around the coil of the first iron core is equal to the number of the coil around the second iron core Amount.In other embodiments, the coil of varying number can be selected, to compensate in the region for for example appearing in an iron core Loss.

Two winding process can be implemented herein.In the first process program, winding is being implemented around another iron core Before, it is first about an iron core and implements all windings.Alternatively, different windings can also be carried out.But the first alternative It is favourable in manufacturing technology.

In other embodiments, the first iron core is perforated with least one, and winding wire is directed to second by the perforation Iron core, or vice versa be directed to the first iron core from the second iron core.In one embodiment, the second coiling iron core is first about, so It is inserted in the first iron core and around the first coiling iron core afterwards.

In other embodiments, winding wire is designed as twisting the copper twisted wire turned, and this is favourable in terms of Kelvin effect 's.

The preferred application field of winding is used as the armature winding at the inductive charging station of electric car or hybrid electric vehicle.

Brief description of the drawings

The present invention is further explained below in conjunction with preferred embodiment.In the accompanying drawings：

Fig. 1 shows the winding top view (prior art) with circular winding,

Fig. 2 a show the winding top view (prior art) with DD windings,

Fig. 2 b show sectional view (prior art) of the cutting according to Fig. 2 a winding,

Fig. 3 a show the top view of the winding according to the present invention, and

Fig. 3 b show the sectional view of the winding according to Fig. 3 a according to the present invention.

Embodiment

Fig. 1 shows winding 10, and the winding 10 is circular winding.The winding 10 has the iron core 11 of cylindricality, and winding wire 12 encloses Wound around iron core 11, wherein, the arrow on winding wire 12 represents the sense of current.Electric current through winding wire 12 is fixed according to the right hand Reason causes one towards the magnetic direction 13 in figure plane.The field line formed herein is rotationally symmetrical, by with larger Electric current.

Winding 20 is shown in Fig. 2 a and 2b, the winding 20 is DD windings.Winding 20 arrange while there is spacing side by side the One iron core 21 and the second iron core 22.Winding wire 23 is wound around two iron cores 21,22, wherein, arrow represents the sense of current again.

Here, at least one first coil 24 is wound around the first iron core 21, and at least one second coil 25 is surrounded Second iron core 22 is wound, wherein, coil 24,25 is wound into so that simultaneously therefore electric current is reverse to coiling direction.Thus, electric current Direction surrounds the first iron core 21 clockwise, and the sense of current surrounds the second iron core 22 counterclockwise.Correspondingly, according to right hand theorem Obtain one be used for the first iron core 21 towards the magnetic direction 26 in figure plane and for the second iron core 22 from accompanying drawing The outside magnetic direction 26 of plane, this causes the magnetic direction of orientation (referring to Fig. 2 b).In addition, showing to fix thereon in figure 2b There is the support 27 of winding 20.The magnetic field formed is not rotationally symmetrical.

Fig. 3 a and 3b show the winding 30 according to the present invention.The winding 30 has the first iron core 31 of the form of hollow cylinder 32 With the second iron core 33 of the form of solid cylinder 34.Here, the internal diameter d of the first iron core 31_iMore than the outside diameter d of the second iron core 33_a. This, the second iron core 33 is concentrically arranged in the first iron core 31.Winding wire 35 is wound around the first iron core 31 and the second iron core 33, So that forming at least one coil 36 and at least one coil 37 around the second iron core 33 around the first iron core 31.Here, Coiling direction is specified that again so that coil 36 is in reverse to coil 37 around the second iron around the coiling direction of the first iron core 31 The coiling direction of core 33.Thus there is magnetic direction 38, the magnetic direction 38 is in the shown sense of current in the first iron core 31 It is interior from figure plane outwardly, and towards pointing in figure plane in the second iron core 33.Thus produce rotationally symmetrical Magnetic field.If secondary windings is equally rotationally symmetrical winding (such as circular winding) now, the magnetic line of force stream induced with The angle position of secondary windings in the horizontal plane is unrelated.In fig 3b, it may also be seen that support 39, winding 30 is arranged in the branch On frame 39.Herein it should be noted that the gap between the first iron core 31 and the second iron core 33 is preferably small as much as possible.Other In embodiment, first and second iron cores 31,33 are dimensioned to so that surface almost has identical size, and magnetic field leads to The surface is crossed to send.It should be noted also that though it is shown that the static sense of current, but winding can also be given to apply exchange Electricity.

Claims

1. a kind of winding (30), wherein, the winding (30) has two iron cores (31,33) and winding wire (35), wherein, it is described Winding wire (35) is wound with least one coil (36,37) around corresponding iron core (31,33) respectively, wherein, at least one encloses At least one coil (37) for surrounding other iron cores (33) is in reverse to around the coiling direction of the coil (36) of the first iron core (31) Coiling direction, it is characterised in that first iron core (31) is designed as hollow cylinder (32), the second iron core (33) design For solid cylinder (34) or hollow cylinder, wherein, the external diameter (d of second iron core (33)_a) it is less than first iron core (31) internal diameter (d_i), wherein, second iron core (33) is concentrically arranged at the inside of first iron core (31).

2. according to the winding described in claim 1, it is characterised in that around the quantity of the coil (36) of first iron core (31) Equal to the quantity of the coil (37) around second iron core (33).

3. according to the winding described in claim 1, it is characterised in that around the quantity of the coil (36) of first iron core (31) It is not equal to the quantity of the coil (37) around second iron core (33).

4. according to the winding described in one of preceding claims, it is characterised in that the winding wire (35) is first about an iron Core (31,33) is wound to form coil (36,37), is then wound again around another iron core (33,31).

5. according to the winding described in one of preceding claims, it is characterised in that first iron core (31) has at least one Perforation, the winding wire (35) is directed to the second iron core (33) by the perforation.

6. according to the winding described in one of preceding claims, it is characterised in that it is stranded that the winding wire (35) is designed as copper Line.

7. a kind of application to according to the winding (30) described in one of preceding claims, is used as induction type by the winding and fills The armature winding in power station.