CN206673800U - A kind of vehicle alternator - Google Patents
A kind of vehicle alternator Download PDFInfo
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- CN206673800U CN206673800U CN201720461833.7U CN201720461833U CN206673800U CN 206673800 U CN206673800 U CN 206673800U CN 201720461833 U CN201720461833 U CN 201720461833U CN 206673800 U CN206673800 U CN 206673800U
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Abstract
The utility model discloses a kind of vehicle alternator, is related to technical field of generators.The vehicle alternator includes drive end bearing bracket, rear end cap and the rotor and stator being fixed between drive end bearing bracket and rear end cap, rotor includes preceding the pole pawl and rear polar grab for intersecting installation, bobbin is provided between preceding pole pawl and rear polar grab, rotor coil is arranged with bobbin, stator includes stator core and the stator coil being wrapped on stator core；The phase number of turn Ns of the every groove of stator coil and the number of turn Nr ratios of rotor coil are：0.017≤Ns/Nr≤0.029, being provided with the ratio between yoke, yoke diameter D2 and root diameter D1 between preceding pole pawl and rear polar grab is：0.55≤D2/D1≤0.62.The utility model reaches magnetic leakage factor and the optimization design of magnetic resistance on the premise of wire winding is met, improves the power output of generator；Induced electromotive force is increased simultaneously, makes generator power density under equivalent diameter optimal.
Description
Technical field
It the utility model is related to technical field of generators, more particularly to a kind of vehicle alternator.
Background technology
In the car, the effect of alternating current generator is that some mechanical of engine can be transformed into electric energy, so as to be automobile
Electrical equipment or battery be powered.Existing vehicle alternator generally comprises end cap, rotor, stator, belt pulley, whole
The parts such as bridge are flowed, in the process of running, (such as stator structure, rotor structure, rotor are with determining because generator itself design is unreasonable
Sub- fit clearance etc.), easily cause that generator copper loss is big, noise is big, leakage field is serious, and then greatly reduce the energy of generator
Conversion ratio and generated output, it have impact on the output performance of generator.For these reasons, existing vehicle alternator is typically adopted
With large-sized structure design, to ensure the power demand of automobile, the development however as current automotive small, lightness becomes
Gesture, this power output is low, and bulky alternating current generator can not increasingly meet the needs of user.
Utility model content
Based on a kind of described above, vehicle alternator of the utility model offer, to solve existing alternating current generator hair
Electrical efficiency is low, power output is small, volume is big, wind is made an uproar the problem of big.
To use following technical scheme up to this purpose, the utility model：
A kind of vehicle alternator, including drive end bearing bracket, rear end cap and the rotor being fixed between drive end bearing bracket and rear end cap
And stator, the rotor include preceding the pole pawl and rear polar grab for intersecting installation, coil are provided between the preceding pole pawl and rear polar grab
Frame, rotor coil is arranged with the bobbin, and the stator includes stator core and the stator line being wrapped on stator core
Circle；The phase number of turn Ns of the every groove of the stator coil and the number of turn Nr ratios of rotor coil are：0.017≤Ns/Nr≤0.029, it is described
Being provided with the ratio between yoke, the yoke diameter D2 and root diameter D1 between preceding pole pawl and rear polar grab is：0.55≤D2/D1≤
0.62。
Preferably, the thickness of the distance L2 and preceding pole pawl bottom plate on the inside of the front end face of the stator core to preceding pole pawl bottom plate
Spending the ratio between L1 is：L2/L1≤0.19；And/or the distance L2 ' on the inside of the rear end face of the stator core to rear polar grab bottom plate is with after
The ratio between thickness L1 ' of pole pawl bottom plate is：L2’/L1’≤0.19.
Preferably, the pawl point of the preceding pole pawl is to the distance Lp of stator core front end face and the height of the stator core
The ratio between L3 is：Lp/L3≥0.91；And/or distance Lp ' and the stator of the pawl point of the rear polar grab to stator core rear end face
The ratio between height L3 of iron core is：Lp’/L3≥0.91.
Preferably, the preceding pole pawl pawl with the ratio between the thickness X 1 and thickness L1 of the preceding pole pawl bottom plate be：0.91≤
X1/L1≤1.2；And/or the rear polar grab pawl with the ratio between thickness X 1 ' and the thickness L1 ' of the rear polar grab bottom plate be：0.91≤
X1’/L1’≤1.2。
Preferably, the thickness X 2 of the preceding pole pawl pawl point and the preceding pole pawl pawl with the ratio between thickness X 1 be：0.26≤
X2/X1≤0.5；And/or the thickness X 2 ' of the rear polar grab pawl point and the rear polar grab pawl with the ratio between thickness X 1 ' be：0.26≤
X2’/X1’≤0.5。
Preferably, the pawl point of the preceding pole pawl and rear polar grab is equipped with pawl point chamfering circle, the pawl point chamfering circle is by opening
The cold-extruded groove extrusion forming being located on mould, and the radius R of pawl point chamfering circle value is：R≥2mm.
Preferably, the preceding pole pawl is the ratio between to the tooth pin width X of circumferential distance Y and the stator core of rear polar grab
For：1.5≤Y/X≤1.99.
Preferably, the ratio between width bt and iron core groove height ht is in the tooth of the stator core：0.3≤bt/ht≤
0.39。
Preferably, the rotor front end is provided with forefan, stator coil front end is arrived at the top of the fan blade of the forefan
The ratio between the distance t and height h of forefan fan blade be：t/h≤0.19；It is described and/or the rotor rear end is provided with aft-fan
It is to the ratio between the distance t ' and the height h ' of aft-fan fan blade of stator coil rear end at the top of the fan blade of aft-fan：t’/h’≤0.19.
Preferably, the root of the preceding pole pawl and rear polar grab, which offers wind, cuts chamfering, it is flat for one that the wind cuts chamfering
Face.
The beneficial effects of the utility model are：
The utility model can meet coiling by adjusting stator coil per the phase number of turn of groove and the turn ratio of rotor coil
On the premise of technique, reach magnetic leakage factor and the optimization design of magnetic resistance, substantially increase the power output of generator；Pass through adjustment
The proportionate relationship of yoke diameter and root diameter, makes that the pawl point magnetic flux leakage of pole pawl is smaller, and induced electromotive force is larger, improves the hair
The power density of motor.Aforementioned proportion is equipped with, and ensure that the magnetic field degree of saturation of rotor and stator core is optimal, simultaneously
The mechanical strength of rotor is taken into account, the factor such as wind is made an uproar, generator is being possessed height output simultaneously, mechanical strength is more preferable, and generate electricity effect
Rate is higher, and with small vibration, stable working；And then on the basis of with equal output, the utility model effectively reduces hair
The volume of motor, has saved production cost and interior space.
Brief description of the drawings
, below will be to the utility model embodiment in order to illustrate more clearly of the technical scheme in the embodiment of the utility model
The required accompanying drawing used is briefly described in description, it should be apparent that, drawings in the following description are only that this practicality is new
Some embodiments of type, for those of ordinary skill in the art, on the premise of not paying creative work, can be with root
Other accompanying drawings are obtained according to the content of the utility model embodiment and these accompanying drawings.
Fig. 1 is the detonation configuration figure of vehicle alternator provided by the utility model；
Fig. 2 is the internal structure sectional view of vehicle alternator provided by the utility model；
Fig. 3 is the installation diagram of the rotor involved by the utility model；
Fig. 4 is the structure chart of the preceding pole pawl involved by the utility model；
Fig. 5 is another angled arrangement figure of the preceding pole pawl involved by the utility model；
Fig. 6 is the sectional view of the preceding pole pawl involved by the utility model；
Fig. 7 is the sectional view of the rear polar grab involved by the utility model；
Fig. 8 is the local structural graph of the stator core slot involved by the utility model；
Fig. 9 is the structure chart of the tooth of the stator core involved by the utility model；
Figure 10 is the electromagnetic noise curve map of vehicle alternator.
In figure：
11- drive end bearing brackets；12- rear end caps；Pole pawl before 21-；211- bottom plates；212- claws；Yoke before 213-；214- wind is cut down
Angle；22- rear polar grabs；23- rotor coils；24- armature spindles；31- stator cores；32- stator coils；4- belt pulleys；5- rectifier bridges；
6- cover lids；71- forefans；72- aft-fans；
S1, S3 are the electromagnetic noise curve of vehicle alternator in the prior art；
S2 is the electromagnetic noise curve of vehicle alternator of the present utility model.
Embodiment
It is clearer for the technical scheme and the technique effect that reaches that make technical problem that the utility model solves, use,
The technical scheme of the utility model embodiment is described in further detail below in conjunction with accompanying drawing, it is clear that described reality
It is only the utility model part of the embodiment to apply example, rather than whole embodiments.Based on the embodiment in the utility model,
The every other embodiment that those skilled in the art are obtained under the premise of creative work is not made, it is new to belong to this practicality
The scope of type protection.
As shown in Fig. 1-Figure 10, the present embodiment provides a kind of preferable vehicle alternator, and the alternating current generator includes
Drive end bearing bracket 11, rear end cap 12 and the rotor and stator being fixed between drive end bearing bracket 11 and rear end cap 12, wherein rotor, which are fixed on, to be turned
On sub- axle 24, stator is arranged on the outside of rotor.Specifically, preceding pole pawl 21 and rear pole of the above-mentioned rotor including the installation that intersects
Pawl 22, for carrying out magnetic conduction and radiating；Bobbin is provided between preceding pole pawl 21 and rear polar grab 22, rotor is arranged with bobbin
Coil 23, for producing excitation after logical direct current.Above-mentioned stator includes stator core 31 and is wrapped in stator core 31
On stator coil 32；Stator core 31 is used for magnetic conduction and radiating, and stator coil 32 is used to produce exchange in the magnetic field of change
Electricity.The front end of the alternating current generator is connected by belt pulley 4 with the engine of automobile, the kinetic energy of engine can be converted into electricity
Energy；The rear end of generator is connected with rectifier bridge 5 and adjuster, for giving stable electrical energy transportation to in-car electrical equipment；Generate electricity
The rear end of machine is also covered with cover lid 6, to play a protective role.
In the utility model, the ratio between the phase number of turn Ns and the number of turn Nr of rotor coil 23 of stator coil 32 per groove is：
0.017≤Ns/Nr≤0.029, here, the phase number of turn Ns per groove refer in stator core 31 per the coil turn of the single-phase insertion of groove
Number.The setting of above-mentioned ratio, it can make that generator reaches magnetic leakage factor and the optimization of magnetic resistance is set on the premise of wire winding is met
Meter, substantially increase the power output of generator；Specifically, phase number of turn Ns of the said stator coil 32 per groove is 7 circles, rotor line
The number of turn Nr of circle 23 is 315 circles, and ratio between two Ns/Nr is 0.022.Meanwhile yoke diameter D2 and root diameter D1 ratio are：
0.55≤D2/D1≤0.62, wherein, yoke diameter D2 is 53.75 ㎜ (i.e. yoke radius R2 is 26.875 ㎜), root diameter D1
For 96 ㎜ (i.e. rotor radius R1 is 48 ㎜)；Here, after root diameter determines, the stator diameter to match therewith also determines substantially,
So as to obtain the overall dimensions of motor.The setting of aforementioned proportion makes pawl point leakage field minimum, and induced electromotive force is maximum, under same diameter
Ensure that power density is optimal.By adjustment, the combination of above-mentioned specific size, the utility model ensure that the magnetic field of rotor and stator
Degree of saturation is optimal, while has taken into account the mechanical strength of rotor, the factor such as wind is made an uproar, and generator is being possessed height output simultaneously, makes an uproar
Sound is lower, and mechanical strength is more preferable, and generating efficiency is higher；And then on the basis of with equal output, the utility model makes generating
The stator diameter size of machine reaches 124.5 ㎜, effectively reduces the volume of generator, so as to save the production cost of generator
With shared interior space.In addition, generator of the present utility model is the optimization design in the case where considering various factors, its
In each part size and corresponding proportion be respectively provided with the matching relationship of determination；Therefore, the utility model is not prior art
In the larger generator of volume diminution in proportion, the operating efficiency of generator will be had a strong impact on like that.
Further, the copper wire diameter D of stator coil 32 is per the ratio between channel opening width W with stator core 31：0.4<D/W
<0.7, the utility model makes generator preferable with being exported under low speed in high speed, is not in extramalization by adjusting above-mentioned ratio
Phenomenon, effectively reduce the copper loss of the alternating current generator.Specifically, the copper wire diameter D of stator coil 32 is 0.88 ㎜, stator iron
Core 31 is 1.77 ㎜ per channel opening width W, and ratio between two D/W is 0.497.
In the utility model, as shown in Figure 4 and Figure 5, preceding pole pawl 21 includes bottom plate 211 and is uniformly arranged on bottom plate 211
Some claws 212；The structure of rear polar grab 22 is identical with preceding pole pawl 21, and here is omitted；Preceding pole pawl 21 and rear polar grab 22 it
Between be additionally provided with yoke, yoke can be independently arranged and the structure between front and rear two bottom plates or with preceding pole
The integrally formed structure of the bottom plate of pawl 21 and/or rear polar grab 22, preferably using yoke and pole pawl integral production in the present embodiment
Structure, i.e., preceding pole pawl 21 be provided with half preceding yoke 213, rear polar grab 22 be provided with half rear magnetic yoke, rotor install when before,
Two half yokes dock to form whole yoke afterwards.Further, as shown in Fig. 2, Fig. 6, before the front end face of said stator iron core 31 arrives
The ratio between distance L2 and thickness L1 of the preceding bottom plate of pole pawl 21 on the inside of the bottom plate of pole pawl 21 is：L2/L1≤0.19；Meanwhile to meet to send out
The symmetry of electric machine structure is gone forward side by side one-step optimization generator performance, the rear end face of the present embodiment stator core 31 to the bottom of rear polar grab 22
The ratio between distance L2 ' and thickness L1 ' of the bottom plate of rear polar grab 22 on the inside of plate is also configured as：L2’/L1’≤0.19.Specifically, it is above-mentioned
L2 and L2 ' is that 2.19 ㎜, L1 and L1 ' are 12 ㎜, and the setting increase effectively the induced electromotive force of alternating current generator, so as to change
It has been apt to generated output power, has improved electric energy conversion efficiency.
As shown in Fig. 2 before the utility model pole pawl 21 pawl point to the front end face of stator core 31 distance Lp and stator iron
The ratio between height L3 of core 31 is：Lp/L3≥0.91；Meanwhile the pawl point of rear polar grab 22 is to the distance Lp ' of the rear end face of stator core 31
Also it is with the ratio between the height L3 of stator core 31：Lp’/L3≥0.91.Specifically, above-mentioned Lp and Lp ' are 29.92 ㎜, and L3 is
32.4㎜.Meanwhile the height L3 of the utility model stator core 31 and yoke height L4AlwaysThe ratio between be：1≤L3/L4Always≤ 1.24,
Wherein L4AlwaysFor 26.54 ㎜.As shown in Figure 6, Figure 7, due in the present embodiment yoke and pole pawl be integral type structure, whole yoke
It is made up of the preceding yoke 213 on preceding pole pawl 21 with the rear magnetic yoke on rear polar grab 22, wherein the height of preceding yoke 213 is L4, rear magnetic
The height of yoke is L4 ', L4 and L4 ' sum is L4Always, it is contemplated that symmetrical structure, here, L4 and L4 ' they are respectively L4Always/2.Further
Ground, total a height of Lr of rear polar grab before the utility model, and Lr=L1+L4Always+ L1 ', here the height L3 of stator core 31 with it is front and rear
The ratio between total high Lr of pole pawl is：0.56≤L3/Lr≤0.69, wherein Lr are 50.54 ㎜.The program causes alternating current generator same
Can have optimal power density under equal diameter, ensure pole pawl mechanical strength under induced electromotive force maximize, make output and
Efficiency maximizes, and is advantageous to reduce the volume of generator.
Further, the above-mentioned preceding pawl of pole pawl 21 with the ratio between the thickness X 1 and thickness L1 of the preceding bottom plate 211 of pole pawl 21 be：0.91
≤X1/L1≤1.2；Meanwhile the pawl of rear polar grab 22 with the ratio between thickness X 1 ' and the thickness L1 ' of the bottom plate of rear polar grab 22 be also：0.91≤
X1’/L1’≤1.2.Specifically, above-mentioned X1 and X1 ' are that 11.17 ㎜, L1 and L1 ' are 12 ㎜, and the program is forward and backward in guarantee
On the premise of the pawl mechanical strength of pole, increase generator induced electromotive force so that generator have preferable fan-out capability and
Generating efficiency.
Further, the thickness X 2 of the above-mentioned preceding pawl point of pole pawl 21 and the preceding pawl of pole pawl 21 with the ratio between thickness X 1 be：0.26
≤X2/X1≤0.5；Meanwhile the thickness X 2 ' of the pawl point of rear polar grab 22 and the pawl of rear polar grab 22 with the ratio between thickness X 1 ' be：0.26≤
X2’/X1’≤0.5.Specifically, above-mentioned X2 and X2 ' are that 3.09 ㎜, X1 and X1 ' are 11.17 ㎜, and the program further increases
The induced electromotive force of alternating current generator, makes the generator have more preferable fan-out capability and generating efficiency.
Preferably, the pawl point of pole pawl 21 and rear polar grab 22 is equipped with pawl point chamfering circle, pawl point chamfering before the utility model
The round cold-extruded groove extrusion forming by being opened on mould, and the radius R of pawl point chamfering circle value is：R >=2mm, preferably may be used
To take R=3mm.The chi of requirement can not be reached by extrusion process because the pawl point topside area of existing pole pawl is too small, during processing
It is very little；And this programme is justified by increasing pole pawl pawl point chamfering, the area of pawl point is expanded, convenient use extrusion process is processed,
Production efficiency is improved, has saved cost.
Preferably, preceding pole pawl 21 is to the ratio between the circumferential distance Y and the tooth pin width X of stator core 31 of rear polar grab 22：1.5
≤Y/X≤1.99.The circumferential distance Y of above-mentioned preceding pole pawl 21 to rear polar grab 22 refers to, intersects the preceding pawl of pole pawl 21 adjacent after installing
Portion and width of the groove that the claw of rear polar grab 22 is formed along generator circumference, specifically, above-mentioned Y is 7.48 ㎜, and X is 4.51 ㎜,
This programme reduces the magnetic flux leakage of pole pawl pawl point, increases generator induced electromotive force.
In addition, as shown in figure 8, the tooth of stator core 31 can be the consistent structure of upper and lower tooth width, said stator iron core
The ratio between width bt and iron core groove height ht is in 31 tooth：0.3≤bt/ht≤0.39.Specifically, bt herein is 3.28 ㎜,
Ht is 9.17 ㎜.For this programme on the premise of in view of the processing technology of stator core 31, the coiling that have adjusted stator core slot is empty
Between, iron circuit saturation degree is optimized, improves generated output power.Here, as shown in figure 9, the tooth of stator core 31 also
The inconsistent structure of upper and lower tooth width can be set to, such as：The facewidth that the lower end of tooth is narrower is btmin, the facewidth that the upper end of tooth is wider is
btmax, now bt=(btmin+btmax)/2, said structure can adjust stator iron compared with toothing wide up and down in Fig. 8
The winding space of core groove, optimize iron circuit saturation degree, while improving generated output power, it is often more important that facilitate flat copper
The insertion of line is so as to improving iron core slot space availability ratio.
It is further preferable that above-mentioned rotor front end is provided with forefan 71, stator coil 32 is arrived at the top of the fan blade of forefan 71
The ratio between the distance t of front end and height h of the fan blade of forefan 71 is：T/h≤0.19, wherein t are 1.75 ㎜, and h is 11.70 ㎜；Turn
Sub- rear end is provided with aft-fan 72, and the distance t ' and the fan blade of aft-fan 72 of the rear end of stator coil 32 are arrived at the top of the fan blade of aft-fan 72
The ratio between height h ' be also：T '/h '≤0.19, wherein t ' are 2.59 ㎜, and h ' is 14 ㎜, the setting of the ratio, can make generator
Lower noise 1-4dB within 0-22000 revs/min under corresponding rotating speed, while add the heat-sinking capability of generator, make into
Air quantity and cooled area and wind are made an uproar being optimal, and so as to improve fan coolling efficiency, are reduced noise pollution, are improved
Generator performance.
Further, the root of above-mentioned preceding pole pawl 21 and rear polar grab 22 offers wind and cuts chamfering 214, and wind cuts chamfering 214
It for a plane, can be made by 3 points into face, be preferably provided at the windward side that pole pawl rotates, the structure has effectively relaxed air intake punching
Hit, so as to reduce the operating noise of generator, and be positioned only at windward side and can also save processing and fabricating cost.Such as Figure 10 institutes
Show, S1, S3 are the electromagnetic noise curve of vehicle alternator in the prior art, and S2 is automobile-used alternative electric generation of the present utility model
The electromagnetic noise curve of machine, it can be seen from fig. 10 that alternating current generator noise of the present utility model is smaller, and it is more gentle,
Thus improve the overall performance of generator.
Such as the performance test results that table 1 below is the alternating current generator before improving, table 2 below is the friendship after the utility model improves
The performance test results of generator are flowed, wherein, in the efficiency rating of vehicle-mounted dlternator, use VDA (Verband
der Automobil industrie：German automobiles industry meeting) it is used as evaluation index.
Result of the test before the alternating current generator of table 1 improves
Result of the test after the utility model alternating current generator of table 2 improves
Under the setting of the present embodiment, the generator efficiency reachable 69%, and the biography under the conditions of equal stator diameter
The efficiency of system generator is approximately 66%, thus the efficiency of the utility model generator can improve 4.5%.To sum up, the utility model
The vehicle alternator of offer effectively increases the generating efficiency of generator, reduces energy after above-mentioned each improvement
Source wastes, and reduces noise pollution；For the existing generator exported on an equal basis, the utility model reduces generator
Volume, so as to save the production cost of generator and shared interior space.
Pay attention to, above are only preferred embodiment of the present utility model and institute's application technology principle.Those skilled in the art's meeting
Understand, the utility model is not limited to specific embodiment described here, can carried out for a person skilled in the art various bright
Aobvious change, readjust and substitute without departing from the scope of protection of the utility model.Therefore, although passing through above example
The utility model is described in further detail, but the utility model is not limited only to above example, is not departing from
In the case that the utility model is conceived, other more equivalent embodiments can also be included, and the scope of the utility model is by appended
Right determine.
Claims (10)
1. a kind of vehicle alternator, including drive end bearing bracket, rear end cap and the rotor being fixed between drive end bearing bracket and rear end cap and
Stator, it is characterised in that the rotor includes preceding the pole pawl and rear polar grab for intersecting installation, is set between the preceding pole pawl and rear polar grab
Bobbin is equipped with, rotor coil is arranged with the bobbin, the stator includes stator core and is wrapped on stator core
Stator coil；The phase number of turn Ns of the every groove of the stator coil and the number of turn Nr ratios of rotor coil are：0.017≤Ns/Nr≤
0.029, being provided with the ratio between yoke, the yoke diameter D2 and root diameter D1 between the preceding pole pawl and rear polar grab is：0.55
≤D2/D1≤0.62。
2. vehicle alternator according to claim 1, it is characterised in that the front end face of the stator core to preceding pole
The ratio between distance L2 and thickness L1 of preceding pole pawl bottom plate on the inside of pawl bottom plate is：L2/L1≤0.19；And/or the stator core
The ratio between distance L2 ' and thickness L1 ' of rear polar grab bottom plate on the inside of rear end face to rear polar grab bottom plate is：L2’/L1’≤0.19.
3. vehicle alternator according to claim 2, it is characterised in that the pawl point of the preceding pole pawl to stator core
The ratio between the distance Lp of front end face and height L3 of the stator core is：Lp/L3≥0.91；And/or the pawl point of the rear polar grab
The ratio between distance Lp ' and the height L3 of the stator core to stator core rear end face are：Lp’/L3≥0.91.
4. vehicle alternator according to claim 3, it is characterised in that the preceding pole pawl pawl with thickness X 1 and institute
Stating the ratio between thickness L1 of preceding pole pawl bottom plate is：0.91≤X1/L1≤1.2；And/or the rear polar grab pawl with thickness X 1 ' and institute
Stating the ratio between thickness L1 ' of rear polar grab bottom plate is：0.91≤X1’/L1’≤1.2.
5. vehicle alternator according to claim 4, it is characterised in that the thickness X 2 of the preceding pole pawl pawl point and institute
State preceding pole pawl pawl with the ratio between thickness X 1 be：0.26≤X2/X1≤0.5；And/or thickness X 2 ' and the institute of the rear polar grab pawl point
State rear polar grab pawl with the ratio between thickness X 1 ' be：0.26≤X2’/X1’≤0.5.
6. vehicle alternator according to claim 5, it is characterised in that the pawl point of the preceding pole pawl and rear polar grab is equal
Justify provided with pawl point chamfering, the pawl point chamfering circle is by the cold-extruded groove extrusion forming that is opened on mould, and the pawl point chamfering is justified
Radius R value be：R≥2mm.
7. vehicle alternator according to claim 6, it is characterised in that the preceding pole pawl to rear polar grab it is circumferential away from
It is from the ratio between Y and tooth pin width X of the stator core：1.5≤Y/X≤1.99.
8. vehicle alternator according to claim 7, it is characterised in that in the tooth of the stator core width bt with
The ratio between iron core groove height ht is：0.3≤bt/ht≤0.39.
9. according to the vehicle alternator described in claim any one of 1-8, it is characterised in that the rotor front end is provided with
Forefan, it is to the ratio between the distance t and the height h of forefan fan blade of stator coil front end at the top of the fan blade of the forefan：t/h
≤0.19；And/or the rotor rear end is provided with aft-fan, the distance of stator coil rear end is arrived at the top of the fan blade of the aft-fan
The ratio between t ' and height h ' of aft-fan fan blade is：t’/h’≤0.19.
10. according to the vehicle alternator described in claim any one of 1-8, it is characterised in that the preceding pole pawl and rear pole
The root of pawl offers wind and cuts chamfering, and it is a plane that the wind, which cuts chamfering,.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720461833.7U CN206673800U (en) | 2017-04-28 | 2017-04-28 | A kind of vehicle alternator |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720461833.7U CN206673800U (en) | 2017-04-28 | 2017-04-28 | A kind of vehicle alternator |
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| Publication Number | Publication Date |
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| CN206673800U true CN206673800U (en) | 2017-11-24 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107070149A (en) * | 2017-04-28 | 2017-08-18 | 上海法雷奥汽车电器系统有限公司 | A kind of vehicle alternator |
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2017
- 2017-04-28 CN CN201720461833.7U patent/CN206673800U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107070149A (en) * | 2017-04-28 | 2017-08-18 | 上海法雷奥汽车电器系统有限公司 | A kind of vehicle alternator |
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