Description of drawings
Fig. 1 is the unitary side view that permanent magnet type electric rotary machine of the present invention is applicable to the small-size motorcycle type two-wheel motorcycle of starter generator.
Fig. 2 is the crank axle sectional view along the swing mechanism of Fig. 1.
Fig. 3 is perpendicular to the sectional plan view in the face of the rotating shaft (crank axle) of starter generator (permanent magnet type electric rotary machine).
Fig. 4 is the side cross-sectional view of Fig. 3.
Fig. 5 is the plane graph of rotor york piece.
Fig. 6 is the end view of rotor york piece.
Fig. 7 is the partial enlarged drawing of rotor york piece.
Fig. 8 is the block diagram of the control system of starter generator.
Fig. 9 explanation is arranged on function when electronic () of the space part on the rotor york piece.
Figure 10 explanation is arranged on the function (during generating) of the space part on the rotor york piece.
Figure 11 represents it is the flat shape of rotor york piece of second embodiment of the invention.
Figure 12 is inserted into partial enlarged drawing under the state in Figure 11 peristome at permanent magnet.
Figure 13 represents it is the flat shape of rotor york piece of third embodiment of the invention.
Figure 14 is inserted into partial enlarged drawing under the state in Figure 13 peristome at permanent magnet.
Figure 15 represents it is the flat shape of rotor york piece of fourth embodiment of the invention.
Figure 16 is inserted into partial enlarged drawing under the state in Figure 15 peristome at permanent magnet.
Figure 17 represents it is the flat shape of rotor york piece of fifth embodiment of the invention.
Figure 18 is inserted into partial enlarged drawing under the state in Figure 17 peristome at permanent magnet.
Figure 19 represents it is the flat shape of rotor york piece of sixth embodiment of the invention.
Figure 20 is inserted into partial enlarged drawing under the state in Figure 19 peristome at permanent magnet.
Figure 21 is the partial enlarged drawing of Fig. 9.
Figure 22 is the partial enlarged drawing of Figure 10.
Figure 23 be in 120 ° of energising controls be with rotor speed the expression energising of parameter ground constantly advance angle and the figure (Wmg: Wsp is about 5: 1) of the relation between the torque.
Figure 24 be in 120 ° of energising controls be with rotor speed the expression energising of parameter ground constantly advance angle and the figure (Wmg: Wsp is about 4: 1) of the relation between the torque.
Figure 25 be in 120 ° of energising controls be with rotor speed the expression energising of parameter ground constantly advance angle and the figure (Wmg: Wsp is about 2.8: 1) of the relation between the torque.
Figure 26 be in 180 ° of energising controls be with rotor speed the expression energising of parameter ground constantly advance angle and the figure (Wmg: Wsp is about 5: 1) of the relation between the torque.
Figure 27 be in 180 ° of energising controls be with rotor speed the expression energising of parameter ground constantly advance angle and the figure (Wmg: Wsp is about 4: 1) of the relation between the torque.
Figure 28 be in 180 ° of energising controls be with rotor speed the expression energising of parameter ground constantly advance angle and the figure (Wmg: Wsp is about 2.8: 1) of the relation between the torque.
Symbol description
The 1-starter generator; The 50-stator; The 51-stator core; The 52-stator salient poles; The 53-stator coil; The 60-external rotor; 61-rotor york piece; 62 (62N, 62S)-permanent magnet; The 63-rotor case; The 71-over cap; The 201-crank axle; The 611-peristome; 612-first space; The 613-interpole; 614-second space;
Below, describe the present invention in detail referring to accompanying drawing.Fig. 1 is the unitary side view that permanent magnet type electric rotary machine of the present invention is applicable to the small-size motorcycle type two-wheel motorcycle of starter generator.
Vehicular body front 3a and rear vehicle 3b link to each other by low foot pedal 4, the vehicle frame that becomes body framing roughly by under manage 6 and the person in charge 7 constitute.Be responsible for 7 and supporting fuel tank and boot (all not shown), and saddle 8 sides disposed thereon.
On Vehicular body front 3a, be bearing in and turn to above control tube head 5 ground are arranged on handlebar 11, and front fork 12 extends the below, front-wheel FW supports on its lower end.The top of handlebar 11 is covered by the handlebar cover 13 of dual-purpose guidance panel.On the lower end of being responsible for 7 riser portions, the outstanding carriage 15 that is provided with.By link member 16 can freely swing the frame 18 that suspends of pendulous device 2 connected be bearing on the carriage 15.
On pendulous device 2, the two-stroke internal combustion engine E of single cylinder has been installed in its front portion.Formed belt type continuously variable transmission 26 backward from internal combustion engine E, trailing wheel RW is bearing in by centrifugal clutch and is arranged on the decelerator 27 on its rear portion.The upper end of decelerator 27 and be responsible for 7 between the bend plug-in mounting back cushion 22.On the front portion of pendulous device 2, be provided with gasifier 24 that links to each other with the air intake duct 23 that stretches out internal combustion engine E and the air filter 25 that links to each other with this gasifier 24.
Fig. 2 is the sectional view that cuts off pendulous devices 2 along crank axle 201, the identical or parts that are equal to of symbolic representation same as described above.
The crankcase 202 that pendulous device 2 is constituted by left and right crankcase 202L, 202R covers, and crank axle 201 is supporting by the bearing 209,208 that is fixed on the bent axle axle box 202R free to rotately.The connecting rod (not shown) links to each other with crank axle 201 by crank-pin 213.
Left side crankcase 202L is also used as the belt type continuously variable transmission shell, on the crank axle 201 in always extending to left crankcase 202L, is provided with belt drives wheel 210 rotationally.Belt drives wheel 210 is by fixedly side wheel halfbody 210L and movable side wheel halfbody 210R constitute, fixedly side wheel halfbody 210L is fixed on the left end of crank axle 201 by wheel hub 211, and on its right side, movable side wheel halfbody 210R is inlaid on the crank axle 201 by spline and can approaching leaves fixedly side wheel halfbody 210L.V-shape belt 212 is around hanging between these two wheel halfbody 210L, the 201R.
On the right side of movable side wheel halfbody 210R, lobe plate 215 is fixed on the crank axle 201, be arranged on sliding part 215a on its periphery can be free to slide cooperate with the lobe plate slip boss 210Ra of portion on taking shape in movable side wheel halfbody 210R vertically.The lobe plate 215 of movable side wheel halfbody 210R has its outer peripheral face at the oblique taper surface of lobe plate 215 inclinations, in the space between this taper surface and movable side wheel halfbody 210R, is putting net weight magnetic pole (De ラ イ ウ エ イ ト Port-Le) 216.
When the rotating speed of crank axle 201 increases, on centrifugal direction, move by centrifugal force at the net weight magnetic pole 216 that between active side wheel halfbody 210R and the lobe plate 215, rotates, movable side wheel halfbody 210R be crushed on the net weight magnetic pole 216 to moving to left and thereby approaching fixedly side wheel halfbody 210L.As a result, be clipped in these two V-shape belts 212 between wheel halfbody 210L, the 210R and move on centrifugal direction, it increases around hanging diameter.
Be provided with the driven pulley (not shown) corresponding to belt drives wheel 210 on vehicle rear, V-shape belt 212 is around hanging on the driven pulley.By belt gear, the power of internal combustion engine E is passed to centrifugal clutch with reaching automatic adjusting and drives trailing wheel RW by decelerator 27.
In right crankcase 202R, be provided with the starter generator 1 that has merged starter and AC generator.In starter generator 1, external rotor 60 is fixed on the front end tapered portion of crank axle 201 by screw 253.The internal stator 50 that is arranged on external rotor 60 inboards is twisted solid on crankcase 202 by bolt 279 grades.Below, describe the structure of described starter generator 1 in detail referring to Fig. 3-Fig. 7.
The lower hem of the central conus portion 280a of fan 280 is fixed on the external rotor 60 by bolt 246, and fan 280 is covered by fan guard 281 by radiator 282.
On crank axle 201, sprocket wheel 231 is fixed between starter generator 1 and the bearing 209, by the chain of crank axle 201 drive cam shaft (not shown) around hanging on the sprocket wheel 231.Described sprocket wheel 231 is integral with gear 232 to the pump transferring power that makes lubrication oil circulation.
Fig. 3, the 4th is perpendicular to partial sectional view and side cross-sectional view thereof on rotating shaft (crank axle 201) face of described starter generator (magneto turning motor), Fig. 5, the 6th, the plane graph of rotor york piece and partial enlarged drawing thereof, the wherein identical or part that is equal to of symbolic representation as hereinbefore.
The starter generator 1 of present embodiment constitutes by stator 50 with around the external rotor 60 that stator 50 peripheries are rotated shown in Fig. 3,4, described external rotor 60 shown in Fig. 4,5 by annular silicon steel plate (thin plate) roughly built up the rotor york piece 61 that forms cylindricly, shown in Fig. 3,7, alternately insert N utmost point permanent magnet 62N and S utmost point permanent magnet 62S in a plurality of peristomes 611 that are arranged on rotor york piece 61 circumferencial directions, the cup-shaped rotor case 63 that is connected rotor york piece 61 and crank axle 201 shown in Fig. 3,4 constitutes.
Rotor case 63 has pawl 63a in its circumferential ends, clamp rotor york piece 61 vertically by making in the pawl 63a curved, and insert each permanent magnet 62 (62N, 62S) in rotor york piece 61 peristomes 611 and be maintained on the precalculated position in the rotor york piece 61 with above-mentioned laminated construction.
Described stator 50 is formed by silicon (ケ イ) steel plate (thin plate) lamination, and as shown in Figure 3, it comprises stator core 51 and stator salient poles 52.Stator coil 53 is wound on each stator salient poles 52 according to the one pole centralized system, and the protected cover 71 of the interarea of stator 50 covers.
Shown in Fig. 5,6,30 degree ground have formed axially insertion peristome 611 wherein of 12 permanent magnets 62 on rotor york piece 61 at interval in a circumferential direction.Along on the two ends of the circumferencial direction of each peristome 611, formed towards the center and the gap 614 of extending with preset width.Played the effect of interpole 613 between each adjacent peristome 611.As illustrated in fig. 7, the cross section roughly becomes the permanent magnet 62 of cydariform to be inserted in each peristome 611.As illustrated in fig. 6, the width of the peristome 611 relevant with rotation direction is the width W mg of permanent magnet 62 and the ratio Wmg of the width Ws p of interpole 613: Wsp is configured to be about 5: 1.
In the present embodiment, the shape of peristome 611 is different with the cross sectional shape of permanent magnet 62, be inserted at permanent magnet 62 under the state of peristome 611, formed on space 612 and the stator side in both sides and stayed described gap 614 in company's section of each permanent magnet 62 along each permanent magnet 62 circumferencial direction.
Fig. 8 is the block diagram of the control system of starter generator 1, or the part that be equal to identical with above-mentioned the same symbolic representation.
Control device 40 has comprised battery 42 output voltage V
BATTThe DC-CD transducer 102, control that is converted to logic voltage VDD and supplies with CPU101 to IG coil 41 power supply ground make ignition control device 103 that spark plug 43 lights a fire at predetermined instant, with cell voltage V
BATTBe converted to three-phase alternating current ground it is supplied with the three-phase drive device 104 of the stator coil 53 of starter generator 1.
Choke transducer (ス ロ Star ト Le セ Application サ) 45 detects choke opening degree θ th and described value is imported CPU101.Rotor sensor 46 detects the turned position of described external rotor and CPU101 is imported in this position.Adjuster 44 is controlled at predetermined battery voltage V corresponding to the induced electromotive force that external rotor 60 rotates, will produce on described stator coil 53
BATTOn.
In such structure, when engine start, CPU101 according to the excitation that determines stator coil 53 by the turned position of rotor sensor 46 detected external rotors 60 constantly and control three-phase drive device 104 each power P ET switch connection constantly, give stator coil 53 each supply alternating current mutually.
Each power P ET (Tr1-Tr6) of three-phase drive device 104 carries out PWM control by CPU101, and controlling its duty ratio according to the rotating speed of described external rotor 60 is driving torque.
On the other hand, when internal combustion engine E starts, interrupted from three-phase drive device 104 to stator coil 53 power supply, now, starter generator 1 by internal combustion engine E by driven driving.At this moment, on stator coil 53, corresponding to the rotating speed of crank axle 201, produced electromotive force.This electromotive force is controlled in cell voltage V by adjuster 44
BATTOn, thereby in to the electric appliance load power supply, remaining electric power is charged in the battery 42.
Figure 23,24,25 all with rotor speed (rpm) be parameter be illustrated in constantly advance angle of energising in 120 ° of energising controls (°) and torque (N/m) between relation.Figure 23,24,25 represents the width W mg of permanent magnet 62 and the ratio Wmg of the width Ws p of interpole 613 respectively: Wsp is roughly 5: 1,4: 1,2.8: 1 o'clock situation.
When respectively scheming, be roughly in 5: 1 the example shown in Figure 23, no matter how soon rotor speed has, and advance angle has produced high torque (HT) in 4 ° to 5 °~7 ° to 8 ° scope.On the contrary, be roughly in 4: 1 the example and shown in Figure 25 being roughly in 2.8: 1 the example shown in Figure 24, especially when rotor speed is low (40rpm), if make advance angle in advance, then torque reduces significantly.
Figure 26,27,28 all with rotor speed (rpm) be parameter be illustrated in constantly advance angle of energising in 180 ° of energising controls (°) and torque (N/m) between relation, Figure 26,27,28 represents the width W mg of permanent magnet 62 and the ratio Wmg of the width Ws p of interpole 613 respectively: Wsp is roughly 5: 1,4: 1,2.8: 1 o'clock situation.
When respectively scheming, be about in 5: 1 the example shown in Figure 26, especially when rotor speed was low, advance angle had produced high torque (HT) in 5 °~7 ° to 8 ° scopes.On the contrary, be roughly in 4: 1 the example and shown in Figure 28 being roughly in 2.8: 1 the example shown in Figure 27, the torque ratio when rotor speed is low is shown in Figure 26, and to be about 5: 1 example poor.
So, according to inventor's experimental result, under 120 ° of energisings and arbitrary situation of 180 ° of energisings, as the width W mg of permanent magnet 62 and the ratio Wmg of the width Ws p of interpole 613: when Wsp is about 5: 1, the result shows, has especially obtained high torque (HT) in the low zone of rotor speed.Thereby, if advance angle also is set to 5 °~7 ° to 8 °, promptly be interpole 613 angle (being 5 ° in the present embodiment) 1-1.5 doubly, then the result shows, has obtained extra high torque.
Then, referring to Fig. 9,10 space 614 that is arranged on the rotor york piece 61 is described and be formed at rotor york piece 61 and permanent magnet 62 between the effect of space part 612.
Fig. 9 represents that 1 starter of starter generator makes the flux density distribution of time spent.Figure 10 represents that this installs the flux density distribution that 1 starter/generator is done the time spent.
Do the time spent at 1 starter of starter generator, if battery 42 is given each stator coil 53 supply exciting current by controller 40, then as illustrated in fig. 9, worn to the inside from the stator side of S utmost point permanent magnet 62S by the magnetic line of force that is become to send radially by the stator salient poles 52N of N utmost point excitation, most of magnetic lines of force are through the core 615 and the interpole 613 and described by the stator salient poles 52N of N utmost point excitation by being returned by the stator salient poles 52S of adjacent S utmost point excitation, stator coil 51 of rotor york piece 61.
At this moment, in the present embodiment, along having formed space 612 on the both sides of the circumferencial direction of permanent magnet 62, thereby reduced from the sidepiece of each permanent magnet 62 and leaked flux to interpole 613, thereby most of magnetic line of force is worn to the core 615 of rotor york piece 61 and then through interpole 613 arrival stators 50 sides from each permanent magnet 62.As a result, pass through the vertical component of the flux of air gap between external rotor 60 and the stator 50,, driving torque is increased so compare with the situation that space 612 is not set owing to increased.
In addition, in the present embodiment, on the stator side at permanent magnet 62 two ends, also formed the slit 614 of restriction circumferencial direction magnetic circuit, thereby also reduced leakage field bundle by rotor york piece 61 inboards.
In other words, as shown in the dashed circle of amplifying presentation graphs 9 among Figure 21, one side (614A) in space 614 has played the effect of flux B1 being guided effectively into stator salient poles 52S from the interpole 613 of rotor york piece 61, and the opposite side in space 614 (614B) has played the effect of guiding stator salient poles 52S by the flux B2 of rotor york piece 61 inside circumference portions 616 effectively from permanent magnet 62N into.As a result, further increased vertical component by the flux of the air gap between external rotor 60 and the stator 50, and the driving torque can further increase as starter the time.
On the other hand, when making starter generator 1 play the time spent of doing of generator, as illustrated in fig. 10, flux and the stator salient poles sent by each permanent magnet 62 have formed closed magnetic path with stator core, thereby the generation current corresponding to rotor speed is resulted from the stator coil.
And in the present embodiment, the regulator voltage of adjuster 44 is set to 14.5 volts, when the output voltage that makes this starter generator 1 starter/generator do the time spent reaches regulator voltage, makes ground connection side transistor Tr2, Tr4, Tr6 short circuit in the described power fet.Thus one, in each stator coil 53, flow through to short circuit current phase lag, reduce by the magnetic lines of force in the stator 50, connect the leakage field Shu Zengjia between the adjacent permanent magnets 62, thus being reduced of starter generator 1 by dynamic torque, the load of internal combustion engine E reduces.
In other words, as amplifying among Figure 21 shown in the broken circle of representing Figure 10, between adjacent permanent magnets 62S, 62N, produced flux B3, through the flux B4 of the interpole 613 of rotor york piece 61, through the flux B5 of the inside circumference portion 616 of rotor york piece 61, through the flux B6 of inside circumference portion 616, air gap and the stator salient poles 52N of rotor york piece 61 through the outer circumference portion 617 of rotor york piece 61.
As mentioned above, according to present embodiment, rotor york piece 61 at external rotor 60 has in the permanent magnet type electric rotary machine of interpole 613 between each permanent magnet 62, owing between each permanent magnet 62 and rotor york piece 61, be provided with space 612 (614), thereby, reduced the leakage field bundle between the adjacent permanent magnet, increased and external rotor 60 and stator 50 between the flux that intersects vertically of air gap.Thereby, the driving torque of doing being increased by dynamic torque of time spent and having made starter do the time spent at this permanent magnet type electric rotary machine starter/generator is increased.
Figure 11 represents it is the flat shape of rotor york piece 61a of second embodiment of the invention, and Figure 12 is inserted into partial enlarged drawing under the state of peristome 611a of rotor york piece 61a at permanent magnet 62a, and symbolic representation as hereinbefore is identical or be equal to part.
In the present embodiment, the peristome 611a of rotor york piece 61a roughly in echelon.The permanent magnet 62a of cross section rectangularity is inserted in the peristome 611a.The result, along on the both sides of permanent magnet 62a circumferencial direction, formed the space 612a of the leakage field bundle that prevents between the adjacent permanent magnets 62a, on the stator side at each permanent magnet 62a two ends, also form the space 614a of restriction circumferencial direction magnetic circuit, thereby reached effect as hereinbefore.In the present embodiment, with the ratio Wmg of the width W mg that turns to relevant permanent magnet 62a with the width Ws p of interpole 613: Wsp also roughly was set to 5: 1.
Figure 13 represents it is the flat shape of rotor york piece 61b of third embodiment of the invention, and Figure 14 is inserted into partial enlarged drawing under the state of peristome 611b of rotor york piece 61b at permanent magnet 62b, and symbolic representation as hereinbefore is identical or be equal to part.
In the present embodiment, the peristome 611b of rotor york piece 61b becomes special-shaped drum type.The cross section becomes the permanent magnet 62b of drum type to be inserted in the peristome 611b.The result, along on the both sides of permanent magnet 62b circumferencial direction, formed the space 612b of the leakage field bundle that prevents between the adjacent permanent magnets 62b, on the stator side at each permanent magnet 62b two ends, also form the space 614b of restriction circumferencial direction magnetic circuit, thereby reached effect as hereinbefore.In the present embodiment, with the ratio Wmg of the width W mg that turns to relevant permanent magnet 62b with the width Ws p of interpole 613: Wsp also roughly was set to 5: 1.
Figure 15 represents it is the flat shape of rotor york piece 61c of fourth embodiment of the invention, and Figure 16 is inserted into partial enlarged drawing under the state of peristome 611c of rotor york piece 61c at permanent magnet 62c, and symbolic representation as hereinbefore is identical or be equal to part.
In the present embodiment, the peristome 611c of rotor york piece 61c becomes the abnormity that otch is set in cydariform portion both sides.The cross section becomes the permanent magnet 62c of drum type to be inserted in the peristome 611c.The result, along on the both sides of permanent magnet 62c circumferencial direction, formed the space 612c of the leakage field bundle that prevents between the adjacent permanent magnets 62c, on the stator side at each permanent magnet 62c two ends, also form the space 614c of restriction circumferencial direction magnetic circuit, thereby reached effect as hereinbefore.In the present embodiment, with the ratio Wmg of the width W mg that turns to relevant permanent magnet 62c with the width Ws p of interpole 613: Wsp also roughly was set to 5: 1.
Figure 17 represents it is the flat shape of rotor york piece 61d of fifth embodiment of the invention, and Figure 18 is inserted into partial enlarged drawing under the state of peristome 611d of rotor york piece 61d at permanent magnet 62d, and symbolic representation as hereinbefore is identical or be equal to part.
In the present embodiment, the peristome 611d of rotor york piece 61d becomes special-shaped drum type.The cross section becomes the permanent magnet 62d of drum type to be inserted in the peristome 611d.As a result, along on the both sides of permanent magnet 62d circumferencial direction, formed the space 612d of the leakage field bundle that prevents between the adjacent permanent magnets 62d.
In addition, with peristome 611d differently, on the interior perimembranous of the rotor york piece 61d at the two ends that are equivalent to each permanent magnet 62d, formed the magnetic circuit space 614d that is used to limit circumferencial direction with becoming incision-like, therefore, reached effect same as described above.In addition, in the present embodiment, and the ratio Wmg of the width W mg that turns to relevant permanent magnet 62d with the width Ws p of interpole 613: Wsp approximately was set to 5: 1.
Figure 19 represents it is the flat shape of rotor york piece 61e of sixth embodiment of the invention, and Figure 20 is inserted into partial enlarged drawing under the state of peristome 611e of rotor york piece 61e at permanent magnet 62e, and symbolic representation as hereinbefore is identical or be equal to part.
In the present embodiment, the peristome 611e of rotor york piece 61e becomes special-shaped drum type.The cross section becomes the permanent magnet 62e of drum type to be inserted in the peristome 611e.The result, along on the both sides of permanent magnet 62e circumferencial direction, formed the space 612e of the leakage field bundle that prevents between the adjacent permanent magnets 62e, on the stator side at each permanent magnet 62e two ends, also form the space 614e of restriction circumferencial direction magnetic circuit, thereby reached effect as hereinbefore.And in the present embodiment, and the ratio Wmg of the width W mg that turns to relevant permanent magnet 62e with the width Ws p of interpole 613: Wsp approximately was set to 5: 1.