CN1271988A - Actuating electric generator - Google Patents
Actuating electric generator Download PDFInfo
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- CN1271988A CN1271988A CN 99105240 CN99105240A CN1271988A CN 1271988 A CN1271988 A CN 1271988A CN 99105240 CN99105240 CN 99105240 CN 99105240 A CN99105240 A CN 99105240A CN 1271988 A CN1271988 A CN 1271988A
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Abstract
a starting electric generator used as electric motor when the engine is started and as electric generator after the engine is started is composed of a stator with armature windings and a rotor linked to the crankshaft of engine and able to rotate around the stator. It has many similar pole magnets and many controllable magnetic poles arranged in the gaps between magnets. The exciting windings which cooperates with the control magnetic poles to form a closed magnetic circuit, is fixed to the stator by bolts. The current intensity in exciting winding can change its magnetic flux. Changing the active magnetic flux between stator and rotor eliminates the unbalance between the outputs of motor and electric generator.
Description
The present invention relates to starter-generator, this starter-generator not only can be used as starter but also can be used as generator, can use for the engine of motor scooter or use for general purpose engine, the present invention is specifically related to be directly connected in the starter-generator that engine does not need back gear.
The various put-puts for example engine of the engine of motorcycle and light generator generally all are equipped with the starting motor of piloting engine and individually by engine-driven generator.Yet motor and generator have a lot of something in commons each other aspect basic structure, and starting motor only is used to pilot engine, and permanent magnet generator be used in pilot engine after.Starter-generator (from motor generator (sel-motor dynamos)) is developed in the portable engine field, the rotor of generator and stator also are made to the armature as excitation unit and starting motor in this generator.
As starter-generator, the starter-generator of well-known outer-rotor type, the rotor configuration that has permanent magnet (abbreviating magnet later on as) in this generator is in the stator outside.Small motorcycle and light generator etc. will be used permanent magnet generator usually.In this device, rotor is connected in the bent axle of engine and is suitable for rotating in the outside of stator, is wound with the generating winding on the stator, thereby just generates electricity when rotor rotation.
When making starting motor with this starter-generator, transmit electric power and just can produce magnetic field to the starting winding from power supply, interaction between the magnetic field that produces by this magnetic field and the rotor magnet power that just can rotate drives bent axle thus and rotates, and makes engine start.On the other hand, when making permanent magnet generator with starter-generator after engine start, the flux interaction of rotor magnet produces electromotive force thus on generator windings.
Yet be directly connected in engine when rotor, and starter-generator is when being made to not only as starting motor but also as generator, this device can be followed following difficulty under the condition that may be applied to motorcycle.That is, when the existing starting motor that uses for motorcycle was configured to have total speed reducing ratio and be 20～30 with respect to engine crankshaft, generator directly connected engine when engine is driven operation.Therefore, when the starter-generator that is suitable for not only making starter but also makes generator is applied on the motorcycle and equally is directly connected in engine as generator, just can produce serious imbalance between the required cabinet size in the required cabinet size of starting motor with as generator.
The torque of motor is proportional to the fuselage size (or weight) of motor basically, therefore speed reducing ratio is that 20 the weight as the starter-generator of starting motor will reach 60kg, if when producing moment with it, the moment of this generation be directly connected in engine (speed reducing ratio is 1) just weight only can reach for the common motor of 0.3kg.Should also be noted that when it is used as generator, only need weight 1kg, just the energy output that can obtain expecting, the same with other common generator, and weight to reach the generator electricity of 6kg be 6 times of actual required electric power, thereby any unnecessary electric power is had to slattern.
Following table 1 illustrates the result that the imbalance of known starter-generator is tested." energy output " is meant the resulting maximum of winding with starting motor in the table 1.Can find out that from table 1 when starter-generator is designed to produce the needed output of starter, the output of generator (charger) will exceed more than 10 times than the output that requires.
Table 1
| Require output | Actual output | |
| Starter | Starting torque: 1 kilogram force-meter | Starting torque: 1 kilogram force-meter |
| Generator | Illumination output: 80W output: the 70W that powers | Illumination output: 80W output: the 800W that powers |
Find out from top table, when the starter-generator that satisfies the starter cabinet size when application is made generator, just can produce very big imbalance between the required magnetic flux of the required magnetic flux of motor and generator, this fact causes generator to produce too much output.In addition, also should take some precautionary measures to handle unnecessary electric power, this causes increasing because of power loss the friction of engine again, and the result is that engine output reduces, and specific fuel consumption worsens.Generally have two kinds of methods to handle superfluous output in this case: the short-circuit type regulating system makes the generator coil short circuit in this system; The opening type regulating system is thrown off coil in this system.Yet the former may cause copper loss, and the latter may cause core loss, thereby no matter the sort of method all has to produce huge loss when handling superfluous output.
In this case, for example such in alternating current generator if use the magnetic flux that magnet exciting coil produces only to be needed, then can avoid the problem of excessive output.Exciting current can change repeatedly and control the characteristic and the energy output of motor in the device of alternating current generator.Adopt this device can control the operating characteristics of motor and the rate of change of generating (rate of powergeneration), thereby reach appropriate balance.Yet also requirement is designed for the problem of the starter-generator solution " Kick-start (kick start) " of motorcycle.This Kick-start is not set on four-wheel automobile, and therefore device can not easily be applied on the motorcycle.The light generator that is used in the general purpose engine and has in the engine of kick-starter also may produce similar problem; This kick-starter can be used the manual starting of rope starting device.
In other words, on motor scooter, storage battery not necessarily needs to remain on kilter, and the design of engine starting system should consider that the situation that storage battery disconnects may take place motorcycle.For this reason,, also require motorcycle to start its engine with recoil motion (kick action) or pressure hook action (press-and-hook action) even storage battery had lost efficacy or binding post has broken away from storage battery, thus the starting motorcycle.Therefore, require the environment of the starter-generator of operation motorcycle engine to be different from the environment of four-wheel automobile fully, in automobile electric equipment be based on basically storage battery always normally the hypothesis of operation design.
In these cases, generally adopt magneto-electric generator to make the generator of motorcycle, magneto-electric generator is suitable for forming magnetic field with magnet, and the result is, when rotating, just can generate electricity in case bent axle is subjected to the driving of recoil motion or some other suitable action.Therefore can light and pilot engine and with recoil motion and some other suitable action no matter the situation of storage battery.In other words, the starter-generator of excitation-type can not be used on the motorcycle, and above-mentioned unbalanced problem still can not get solving.Similar problem also is present in the various machines, comprises in the engine with the starting of rope starter, because this engine also adopts magneto-electric generator.
Therefore the purpose of this invention is to provide a kind of starter-generator, this generator can start with recoil motion and some other suitable action, but does not have the problem of excessive output.
According to the present invention, a kind of starter-generator is provided, this generator comprises stator that is wound with armature coil on it and the rotor that is directly connected in engine crankshaft, this rotor is contained in the outside or the inboard of stator, make and to rotate with respect to stator, this starter-generator is suitable for selection function, electrifiable motivational function when piloting engine, but after engine start the starter/generator function.This starter-generator is characterised in that and is configured in epitrochanterian excitation unit, this excitation unit comprise many aspect polarity with the magnetized permanent magnet of the same manner and many controlled magnet of doing with magnetic material, this controlled magnet is configured between the permanent magnet respectively, this excitation unit also comprises magnet exciting coil and the useful flux control device that forms closed magnetic circuit by controlled magnet, this control device is used for the electric current of control flows overexcitation coil, thereby change the magnetic flux that produces by magnet exciting coil, can be controlled at the effective flux that acts between rotor and the stator according to the function of selecting thus.
Said apparatus acts on effective flux between stator and the rotor and depends on the starter-generator role and change.Therefore it can regulate the imbalance of motor output and generator output.Thereby the generator that its rotor is designed to be directly connected in engine can play starting motor effectively, thereby a kind of starter-generator for motorcycle engine or general purpose engine use is provided, and these engines can start with recoil method starting or rope.
In this case, the useful flux amount control device can be configured to make magnet exciting coil excitatory, thereby increases effective flux when piloting engine, and makes magnet exciting coil discharge excitation after piloting engine.
In addition, the useful flux amount control device can be configured to make magnet exciting coil excitatory, thereby increases effective flux when piloting engine, and similarly excitatory to magnet exciting coil after piloting engine, to reduce effective flux.
Moreover the useful flux amount control device can be configured to make magnet exciting coil excitatory, thereby increases effective flux when piloting engine, and similarly makes magnet exciting coil excitatory after engine start, thus the rotational speed regulation effective flux of visual engine.In this case, after engine start, the useful flux control device is configured to control the electric current that is transported to magnet exciting coil, thereby when the rotating speed of engine increases, can reduce effective flux.
In addition, a kind of device can be made like this, makes rotor rotate in the outside of stator; Be formed on hub portion on the rotor part is inserted into stator along pivot center core: hub portion is equipped with magnet to be detected; Hall element is contained on the stator, is positioned at the position towards detected magnet.
In this case, a kind of device can be made like this, makes rotor be connected in the bent axle of engine by hub portion; Stator is fixed on the rack shell, and this rack shell is contained in again on the shell of engine; The end frame that Hall element is housed on it also is contained on the rack shell.The liner that detected in addition magnet can utilize nonmagnetic substance to do is configured on the hub portion.
Moreover a kind of device can be made like this, and feasible magnet exciting coil on bobbin is formed on the end face of stator; Stator has and in axial direction bores the insulating support that enters through hole, embeds lead member and be inserted into this and enter through hole, and an end of lead member is electrically connected on magnet exciting coil thus, and its other end is electrically connected on to magnet exciting coil and carries on the electric wire of electric current.In this case, be connected in and carry the coupling lead member of the electric wire of electric current can be connected in this to magnet exciting coil to enter lead member in the through hole.
Moreover a kind of device can be made like this, makes to form the clamping part patchhole that in axial direction extends on the stator; The magnet exciting coil that is contained in an end of stator is connected to each other with the rack shell that is contained in stator the other end, thereby utilizes link that stator is clipped in the middle, and this link is inserted into this link patchhole.In this case, the magnet exciting coil on coil pipe can be contained on the end surfaces of stator, is formed in the coil pipe top nut part and is screwed into clamping part, and this clamping part is inserted into this clamping part from the outside of rack shell and inserts in the hole.
In addition, starter-generator can be configured to a kind of starter-generator that can be used on the motorcycle, this motorcycle can also can be configured to a kind of starter-generator that can be used on the general purpose engine with the starting of Kick-start method, and this general purpose engine can start with rope.
From can obviously finding out above-mentioned purpose of the present invention, other purpose and novel characteristics below in conjunction with the description of the drawings.
Fig. 1 is a cross-sectional view, and the major part that is used in the starter-generator embodiment on the motorcycle of the present invention is shown.
Fig. 2 schematically illustrates the embodiment of starter-generator shown in Figure 1, the position relation between rotor shown in the figure and stator.
Embodiments of the invention are described with reference to the accompanying drawings.Fig. 1 is a schematic cross section, and the major part that is used in the starter-generator embodiment on the motorcycle of the present invention is shown, and Fig. 2 schematically illustrates the embodiment that pilots engine shown in Figure 1, the position relation between rotor shown in the figure and the stator.
Starter-generator embodiment integral body shown in Figure 1 is connected in engine, be configured to can be used on the motorcycle, both can be used as the starter of engine, can be used as generator again, this starter-generator is used as starting motor will starting when starting, after engine start then as generator.
Generator 2 is contained on the engine housing 1 in mode shown in Figure 1.Rotor 4 integral installations of generator 2 are on engine crankshaft 3, and this bent axle reaches the outside of engine 1 shell.Rotor 4 have have the end with magnetic material for example this hub portion of short cylinder yoke of doing of iron and the configuration of yoke 4a coaxial line and with its formation integral body, and the rotation axis extension from the inner surface of yoke 4a diapire along rotor 4, the bolt/nut engagement of hub portion 4b by nut 4c is connected in this bent axle 3 along the taper outer peripheral face of bent axle 3.The many magnet 5a of rotor 4 excitation unit parts and the inner peripheral surface that many control magnetic pole 5b that does with magnetic material center on yoke 4a cylindrical wall, spaced apart certain distances of being used as.Rotor 4 is made as a whole inertia mass and is designed to make rotor 4 to play engine flywheel satisfactorily.
It should be noted that, when on whole inner peripheral surface, only disposing magnet, be provided at half that magnet numbers on the rotor 4 will become magnet numbers.Therefore, if regulate exciting current, then the load that the load that will apply when the kick-starter of starting backpulsing motorcycle or when starting general engine will be when carrying out start-up function with conventional starter-generator is little.
The generator 2 that also can be used as motor is contained in the rack shell 6a, and this rack shell is fixed, thereby from the outer side covers bent axle 3 of engine housing 1, this rack shell is fixed on the engine housing 1 with bolt 1a.End frame 6b utilizes bolt 1b to be fixed on this rack shell 6a from the outside.Be wound with armature coil 7 on the stator 9 of generator 2, this coil can be used as starter winding and generator windings.Total device is annular shape basically.Stator 9 is contained in the rack shell 6a, makes itself and rotor 4 coaxial lines, and utilizes bolt (fixture) 10 to be fixed on the rack shell 6a.
Rotor 4 has hub portion 4b, and this hub portion 4b is disposed at the interior perimeter surface of stator 9, makes stator 9 outer surface near hub portion 4b.In addition, the outer peripheral face of stator 9 is also near the magnet 5a of rotor 4 and the inner surface of controlled magnetic pole 5b.Promptly insert the core of stator 9 and by bent axle during as the hub portion 4b of rotor 4, be configured in the magnet 5a on the yoke 4a inner peripheral surface and controlled magnetic pole 5b just is driven and rotate around stator 9 by motor driven.
Magnet exciting coil 11 is housed on the end face of stator 9, makes the diapire of magnet exciting coil 11 towards yoke 4a.When magnet exciting coil 11 is carried electric current, this electric current forms the closed magnetic circuit that comprises controlled magnetic pole 5b, thereby these control magnetic poles 5b is by magnetic pumping.When adopting said apparatus, because control the magnetic resistance of the magnetic resistance of magnetic pole 5b less than magnet 5a, and the magnetic permeability of control magnetic pole 5b is less than the magnetic permeability of magnet 5a, so the magnetic flux that is produced by magnet exciting coil 11 tends to focus on controlled magnetic pole 5b.Therefore if when flowing through the magnitude of current of magnet exciting coil 11 and direction and changing, the magnetic flux and the flow direction that are produced by controlled magnetic pole 5b all change.Respective change takes place in the intensity and the direction of the magnetic pole of control magnetic pole 5b thus.Thereby utilize the magnet 5a of permanent magnet and the state that control magnetic pole 5b can change magnetic cell, the effective flux of control action between rotor 4 and stator 9 suitably thus.
Magnet exciting coil 11 is on bobbin 12, and these bobbin 12 usefulness bolts 10 are fixed on the stator 9.The stator core 15 of stator 9 has many bolts and inserts through hole (fixed part patchhole) 17, and this hole is spaced apart along circumference, and this bolt-inserting hole extends along axis direction.On the other hand, the bobbin 12 of magnet exciting coil 11 forms many nut portion 16 on left side shown in Figure 1, makes it insert through hole 17 corresponding to corresponding bolts.When bolt 10 being inserted that corresponding bolts are inserted through holes 17 from the outside of rack shell 6a and during with 16 engagements of corresponding nut part, magnet exciting coil 11 just is fixed in rack shell 6a together in company with stator 9.
If device is made to armature coil 7 and magnet exciting coil 11 are contained on the stator 9, can see that then device will comprise many parts, thereby require many number of assembling steps inevitably.In addition, because rotor 4 is configured to rotate in the outside of stator 9, so, will make whole device also tend to become very big if armature coil 7 is contained in the rotor 4.
For this reason, according to the foregoing description of starter-generator,, insert through hole 17 so on stator 9, form axial bolts for the number that reduces device feature and the step of assembling.Bolt (fixed part) 10 with stud bolt insertion through hole 17 is fixed together magnet exciting coil 11 with the rack shell 6a that is configured on stator 9 end faces subsequently, and stator 9 is clipped in the middle.Therefore, magnet exciting coil 11 and stator 9 can be fixed in rack shell 6a simultaneously.So just, can reduce the number of device feature and the number of number of assembling steps.With earlier magnet exciting coil 11 is clamped together with stator 9 and then this device that stator 9 is fixed in rack shell 6a is compared, can reduce and fix their needed spaces simultaneously.So device can be done very compactly and in light weight.
In addition, in the above-described embodiments, magnet exciting coil 11 on bobbin 12, is contained in assembly on the end face of stator 9 then.The outside from rack shell 6a embeds bolt 10 respective bolt insertion through hole 17 and is screwed into corresponding nut part 16 subsequently.Magnet exciting coil 11, stator 9 and rack shell 6a are fixed together.In addition, operation just can be finished this work from the outside.Thereby significantly improve assembling process.
Has feed part 18 on the part of the bobbin 12 of magnet exciting coil 11.Feed part 18 comprises that by the rod support 19 of electric insulation resin material system and plug lead member 20, these parts 20 are electrically connected on magnet exciting coil 11.Plug lead member 20 is inserted in the support 19, extends and is fixed in wherein along the axis direction of this support.Specifically be that when support 19 was inserted into the feed partial through holes 18a that bores in the stator 9, plug lead member 20 just was directed into the end face of stator 9 in rack shell 6a side.In a side of the stator 9 of introducing plug lead portion 20, plug leading part 20 is electrically connected on socket lead member 21, and this socket lead member 21 is electrically connected on magnet exciting coil control unit 41a again, and this control unit is the control device of useful flux intensity.
The current flow (flow rateof electric current) that flows through magnet exciting coil 11 by lead member 20,21 is controlled by magnet exciting coil control unit 41a.Current flow by control flows overexcitation coil 11 just can change the magnetic flux that magnet exciting coil 11 produces, and can change magnetic excited state and the effective flux of control action between rotor 4 and stator 9 of controlled magnetic pole 5b thus.
When assembling feed part 18, at first the bobbin 12 of magnet exciting coil 11 and the stator core 15 of stator 9 are fixed in rack shell 6a.Then bobbin 12 and stator core 15 are contained in the yoke 4a and with rack shell 6a and are fixed on the engine housing 1.Like this, magnet exciting coil 11 and stator 9 just are fixed in engine housing 1 simultaneously in company with rack shell 6a.
If magnet exciting coil 11 is contained on the end face of stator 9, be positioned at the side of the engine housing 1 of starter-generator, then last configuration is the coupling part of magnet exciting coil 11 to be directed to the opposite side of stator 9.This configuration is the complexity wiring configuration that need carry out the wiring of trouble operation.Because magnet exciting coil 11 is positioned at a side of stator 9, also dispose armature coil 7 at this place, the side that therefore line end of armature coil 7 will be guided to magnet exciting coil 11 will have some difficulties.Thereby a kind of possible configuration is to make the line end of armature coil 7 and magnet exciting coil 11 draw in opposite direction, is connected to each other in assembly then.Yet, the wiring space that this configuration requirement is very big, and the very difficult outside of two lead ends being guided to device from same position.
Given this, in the foregoing description of starter-generator of the present invention, for simplifying the wiring configuration of stator winding line end and magnet exciting coil line end, form the feed through hole 18a that in axial direction extends on the stator 9, feasible magnet exciting coil 11 on bobbin 12 can easily be contained on the end face of stator 9.The support that wherein passes plug lead member 20 19 that will have insulating properties then inserts feed through hole 18a.One end of plug lead member 20 is electrically connected on magnet exciting coil 11, and its other end is connected in the electric wire that conveys electrical current to magnet exciting coil 11.Adopt this configuration, the electrical lead end of magnet exciting coil 11 can be moved to the end face in contrast to magnet exciting coil one side of stator 9, and finish the electrical connection of magnet exciting coil 11 in the side of rack shell 6a.As a result, the electrical connection of the electrical connection of magnet exciting coil 11 and armature coil can be configured in a side of the same end face of stator 9.
Alternatively, make plug lead member 20 and present electric current and can on feed-through 18a, be connected in plug lead member 20 to the coupling lead member that the electric wire of magnet exciting coil 11 is connected.Adopt this configuration, be connected in feed through hole 18a with socket lead member in power supply one side in the plug lead member 20 of magnet exciting coil 11 1 sides.Therefore be electrically connected magnet exciting coil 11 and power supply does not need other space.
In this embodiment, armature coil 7 is driven and realizes three-phase brushless motor and generator, and this motor and generator are controlled by semiconductor switch.The generator 2 of the embodiment of the invention is equipped with rotor position detector 23, and this detector is used to control the on/off operation of semiconductor switch.Rotor position detector 23 comprises the detecting unit 24 with detected object and the detecting unit 27 of detected object.Detecting unit 24 is contained on the rotor 4, and detecting unit 27 then is contained on the rack shell 6a.
Detecting unit 24 comprises liner 25 and detected magnet 26.Liner 25 is contained on the end face of rotor 4 hub portion 4b, and this end face is positioned at the side of rack shell 6a.Liner 25 usefulness nonmagnetic substances are made, and form annular.Liner 25 is bonded in the end of hub portion 4b usually with bonding agent etc.Detected magnet 26 is an annular, has many magnetic poles, and these magnetic poles are opened certain distance along the circle spacing.Detected magnet 26 coaxially is contained on the end face that is positioned at rack shell 6a one side of liner 25 and with bonding agent etc. and firmly fixes.Perhaps this magnet can be used mechanography and liner monolithic molding.
Detector 27 comprises Hall element 29 and the circuit substrate 31 of electromotor control circuit 41b arranged on it, and this control circuit comprises the wiring of electronic device, semiconductor switch and magnet exciting coil control unit 41a etc.Three Hall elements 29 are spaced apart with the phase difference that equates at the upper edge, end of circuit substrate 31 circumference.These parts so dispose, and make when end frame 6b is fixed on the rack shell 6a, and Hall element 29 has predetermined air gap therebetween near detected magnet 26.In addition, Hall element 29 usefulness lead (not shown) are electrically connected on semiconductor switch.
If detect by being contained in the magnetic field that the epitrochanterian magnet of external-rotor-type applies with Hall element, for example detect in the described mode of Japanese Patent Application Publication No.8-266084, then Hall element is configured near the interior stator of rotor, because Hall element tends to pick up the noise that is produced by electric current that flows through the starter winding and the electric current that flows through generator windings, so can not accurately detect the turned position of magnet probably.On the other hand, as described in Japanese Patent Application Publication No.8-256464,, comprise that then the detecting unit of the circuit substrate that Hall element is arranged on it will form the configuration that a kind of detecting unit protrudes from the rotor outside if Hall element is configured in the rotor outside.This will strengthen the total size of light generator.
Therefore, excessive for avoiding device volume in starter-generator embodiment of the present invention, prevent to flow through the influence of winding current simultaneously, a part of rotor 4 inserts the middle body of stator 9, and detected magnet 26 is configured on the insertion portion of rotor 4.In addition, Hall element 29 is contained in towards the position that is positioned at the detected magnet 26 on the rotor 4.In other words, the detected magnet 26 and the Hall element 29 of the starter-generator rotor position detector of formation present embodiment are contained on the corresponding central unit of rotor 4 and stator 9.Therefore when the position of detection rotor 4, can avoid by the magnetic field of rotor 4 magnet 5a and flow through the The noise that the electric current of stator 9 windings produces, thereby can be with Hall element detection position more accurately.
In above-mentioned starter-generator embodiment of the present invention, the hub portion 4b of rotor 4 is contained on the bent axle 3 of engine, and detected magnet 26 is configured on the hub portion 4b.In addition, stator 9 is contained on the rack shell 6a, and this rack shell is connected in engine housing 1 again, and Hall element 29 is contained on the end frame 6b that is fixed in rack shell 6a.Detected magnet 26 and Hall element 29 can dispose at an easy rate, form relative relation.In addition, can carry out more rational arrangement on assembling mode, promptly detected magnet 26 is fixed on the rotor 4, is contained on the stator 9 and have the circuit substrate that is electrically connected Hall element 29.
Moreover, because the liner 25 of detected magnet 26 by nonmagnetic substance system is contained on the rotor 4, be subjected to the influence in magnetic field of magnet 5a of rotor 4 and the influence of magnet exciting coil 11 so can prevent detecting unit effectively.
The following describes the operation of the foregoing description.When adopting the generator 2 that is used as motor to pilot engine, armature coil 7 to stator 9 provides voltage, the phase place of this voltage is corresponding to the phase place of the brushless motor drive signal of driver output, and this driver is contained on the electromotor control circuit 41b of starter-generator.Rotor 4 is because the interaction that the controlled magnetic pole 5b of the rotating magnetic field that causes by armature coil at electric current and magnet 5a and armature coil 7 produces between the magnetic field is driven rotation.Just can detect position, angle at any time at rotary rotor 4, detection mode is, the Hall element 29 that is fixed on end frame 6b one side detects the position of the detected magnet 26 that is fixed in hub portion 4b, then with the information conveyance of the turned position of the rotor 4 that detects to the semiconductor switch of circuit substrate 31, driver drives rotor 4 rotates continuously and stably thus.
In this case, carry electric current to magnet exciting coil 11 by this way, promptly make the residing magnetic state of controlled magnetic pole 5b of rotor 4 be different from the magnetic state of magnet 5a.Specifically be, the N utmost point and S utmost point alternate intervals are opened,, thereby cause the effective flux on the armature coil 7 that acts on stator 9 to increase because this configuration when piloting engine, makes magnet exciting coil 11 excite magnetic.In other words, in above-mentioned starter-generator embodiment of the present invention, when the engine crankshaft 3 that is connected in rotor 4 will rotate, motor make effective flux reach maximum, thereby the torque that produces increased by electric current.Just pilot engine reliably like this.
In case engine start, driver just stop to transmit drive signal automatically according to detection signal, this detection signal is to be produced by Hall element 29 according to the detection to detected magnet 26.When engine started, the rotor 4 that is connected in bent axle 3 reached the stable rotation around stator 9.Subsequently, cause the magnetic interconnection between the rotating magnetic field that the armature coil 7 of the controlled magnetic pole 5b of magnet 5a, rotor 4 and stator 9 is produced, the result produces electromotive force on armature coil 7.The load that some needs is drawn and be transported to the electromotive force that produces on coil 7 by the lead that is connected in armature coil 7.
After engine start, driver stops to armature coil 7 power supplies, and starter-generator just changes to engine from the role of its motor.At this moment, in starter-generator, its direction of electric current and the amount that are transported to magnet exciting coil 11 all change, the feasible generating rate of change (rate of power generation) that can suitably control starter-generator.In other words,, make the magnetic state of controlled magnetic pole 5b reach identical, then can appropriate change act on the useful flux on the armature coil 7 with the magnetic state of magnet 5a if stop to carry electric currents or conveying electrical current to magnet exciting coil 11 to magnet exciting coil 11.
After engine start, if the direction that magnet exciting coil 11 reduces in effective flux then can correspondingly be suppressed the rate of change that generates electricity by excitatory.(rate?of?power?generation)。In addition, if current flow is with the rotation speed change of engine in the magnet exciting coil 11, the rate of change that then can preferably generate electricity (rate of power generation).In this case, can so control the current strength (magnitude of electric current) of magnet exciting coil 11, make effective flux reduce with engine speed.For example,, then stop, thereby effective flux is reduced to be lower than level when piloting engine to magnet exciting coil 11 power supplies if engine speed reduces.Subsequently, when the rotating speed of engine increased, magnet exciting coil 11 was made further to reduce effective flux by so excitatory.Thereby suppress generating rate of change (rate of powergeneration).
As mentioned above, above-mentioned starter-generator embodiment according to the present invention can utilize the magnetic pumping state of the controlled magnetic pole 5b of magnet exciting coil 11 controls.Therefore the effective flux that acts between stator 9 and the rotor 4 can change "+→ 0 →-".Therefore,, make it, the imbalance between torque amount that it produces in the time of also can eliminating and make motor with starter-generator and the energy output that produced when making generator with starter-generator as generator even starter-generator of the present invention is directly connected in engine.In addition, starter-generator of the present invention can be used on any available Kick-start method starting or the motorcycle of rope starting, the light generator etc.
Should be noted that to the invention is not restricted to the foregoing description, can carry out various changes and modification and without prejudice to the spirit and scope of the present invention.For example, although the present invention describes under the situation that starter-generator of the present invention is used in motorcycle and starter-generator, but the no battery chemistries diffuser that the present invention can be applied in for example light generator on any starter-generator or drive with general purpose engine, the perhaps fan motor of external-rotor-type for example, this motor needs rotor-side that the starter-generator of magnet is arranged.
In addition, though in the above-described embodiments, armature coil 7 is configured to not only can make the starter winding but also can make generator windings, can separately form starter winding and generator windings.
As mentioned above, according to starter-generator of the present invention, can control the current strength (magnitude of electric current) in the magnet exciting coil, thereby change the magnetic flux that is produced by magnet exciting coil, this magnet exciting coil forms closed magnetic circuit with controlled magnetic pole 5b.Therefore can be according to the effective flux of role control action between rotor and stator.In other words, depend on operator scheme, for example depending on starter-generator is can change the effective flux that acts between stator and the rotor rightly as motor or as generator.Thereby can regulate imbalance between motor output and the generator output.Even starter-generator of the present invention is applied in the system that rotor is directly connected in engine, this starter-generator in fact also can be used as motor and generator effectively.In addition, can also realize being used in piloting engine on any motorcycle and the general purpose engine, these engines all can start with Kick-start method or rope.
Moreover in starter-generator of the present invention, the magnet numbers the when magnet numbers of formation magnetizer is made up of permanent magnet fully with magnetizer is compared and is reduced half.If therefore suitably regulate exciting curent, then with Kick-start method starting backpulsing motor the time, can reduce added load, or with rope starting general purpose engine the time, can reduce added load.
Claims (14)
1. starter-generator, comprise on it stator and rotor around armature coil, this rotor is directly connected in engine crankshaft and is contained in the outside or the inboard of stator, it can be rotated with respect to stator, this starter-generator is suitable for being elected to be when piloting engine and is motor, and after piloting engine, be chosen as generator, this is piloted engine and is characterised in that and comprises:
Be contained in epitrochanterian excitation unit, comprise many aspect polarity magnetized in the same manner permanent magnet and many controlled magnet of making of magnetic material, controlled magnet is configured between the permanent magnet respectively;
Magnet exciting coil, this coil form the magnetic circuit of sealing by controlled magnet; And
The useful flux control device is used for controlling the electric current of magnet exciting coil, thereby the flux change that magnet exciting coil is produced can rely on the useful flux of selected function control action between rotor and stator thus.
2. starter-generator as claimed in claim 1 is characterized in that, the useful flux control device can excitatory magnet exciting coil, and making increases useful flux when piloting engine, and after engine start, makes the magnet exciting coil degaussing.
3. starter-generator as claimed in claim 1 is characterized in that, the useful flux control device can make magnet exciting coil excitatory, and making increases useful flux when piloting engine, and similarly makes magnet exciting coil excitatory after engine start, to reduce useful flux.
4. starter-generator as claimed in claim 1, it is characterized in that the useful flux control device can make magnet exciting coil excitatory, making increases useful flux when starter-generator, and after engine start, similarly make magnet exciting coil excitatory, thereby can be according to the rotational speed regulation useful flux of engine.
5. starter-generator as claimed in claim 4 is characterized in that, after engine start, the useful flux control device can be controlled the magnitude of current in the magnet exciting coil, makes to reduce effective flux when engine speed increases.
6. as each described starter-generator in the claim 1～5, it is characterized in that, rotor can be configured to rotate in the stator outside, in the hub portion that forms on the part of rotor is inserted into stator middle body on pivot center, this hub portion has detected magnet, Hall element is contained on the stator, is positioned at the position towards detected magnet.
7. starter-generator as claimed in claim 6, it is characterized in that the hub portion of rotor is contained on the bent axle, stator is fixed in rack shell, this rack shell is fixed in engine housing again, also is fixed with the end frame that Hall element is housed on it on this rack shell.
8. as claim 6 or 7 described starter-generators, it is characterized in that detected magnet is configured on the hub portion by the liner of nonmagnetic substance system.
9. as each described starter-generator in the claim 1～5, it is characterized in that, magnet exciting coil on bobbin is contained on the end face of stator, stator has the feed through hole that bores along its axis direction, the insulating support that wherein inserts lead member is inserted in this feed through hole, thus, an end of lead member is electrically connected on magnet exciting coil, and its other end is electrically connected on power delivery to the electric wire of magnet exciting coil.
10. starter-generator as claimed in claim 9 is characterized in that, is connected in lead member in the feed through hole with coupling lead member that transmission of electric energy is connected to the electric wire of magnet exciting coil.
11. as each described starter-generator in the claim 1～5, it is characterized in that, stator has the fixed part patchhole that extends along its axis direction, and the magnet exciting coil that is contained in an end of stator is connected to each other with the rack shell that is contained in stator the other end, make and utilize fixed part that stator is clipped in the middle, this fixed part is inserted into fixed part and inserts in the hole.
12. starter-generator as claimed in claim 11, it is characterized in that, magnet exciting coil on the coiling pipe is configured on the end face of stator, is screwed into fixed part in the nut portion that forms on bobbin, and this fixed part inserts fixed part from the outside of rack shell and inserts in the hole.
13., it is characterized in that starter-generator is suitable for being applied in and can uses on the motorcycle of Kick-start method starting as each described starter-generator in the claim 1～12.
14., it is characterized in that starter-generator is suitable for being connected to can be with the general purpose engine of rope starting as each described starter-generator in the claim 1～12.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 99105240 CN1271988A (en) | 1999-04-22 | 1999-04-22 | Actuating electric generator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 99105240 CN1271988A (en) | 1999-04-22 | 1999-04-22 | Actuating electric generator |
Related Child Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2008100862652A Division CN101247056A (en) | 1999-04-22 | 1999-04-22 | Actuating electric generator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1271988A true CN1271988A (en) | 2000-11-01 |
Family
ID=5271914
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 99105240 Pending CN1271988A (en) | 1999-04-22 | 1999-04-22 | Actuating electric generator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1271988A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1986308B (en) * | 2006-12-08 | 2010-11-17 | 奇瑞汽车股份有限公司 | Motor control system for weak mixed power car |
| CN101060270B (en) * | 2006-04-19 | 2011-05-04 | 日本电产三协株式会社 | Circuit substrate built-in type brushless motor |
| CN101176249B (en) * | 2005-05-10 | 2011-06-15 | 株式会社小松制作所 | Generator/motor mounted on engine |
| CN1814999B (en) * | 2005-12-30 | 2012-04-25 | 王平 | Disc-shape centrifugal-block compression-type IC engine |
| CN107947462A (en) * | 2017-11-28 | 2018-04-20 | 浙江力俭新能源科技有限公司 | A kind of starter-generator |
-
1999
- 1999-04-22 CN CN 99105240 patent/CN1271988A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101176249B (en) * | 2005-05-10 | 2011-06-15 | 株式会社小松制作所 | Generator/motor mounted on engine |
| CN1814999B (en) * | 2005-12-30 | 2012-04-25 | 王平 | Disc-shape centrifugal-block compression-type IC engine |
| CN101060270B (en) * | 2006-04-19 | 2011-05-04 | 日本电产三协株式会社 | Circuit substrate built-in type brushless motor |
| CN1986308B (en) * | 2006-12-08 | 2010-11-17 | 奇瑞汽车股份有限公司 | Motor control system for weak mixed power car |
| CN107947462A (en) * | 2017-11-28 | 2018-04-20 | 浙江力俭新能源科技有限公司 | A kind of starter-generator |
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