CN2550957Y

CN2550957Y - Composite magnetic changing automobile AC generator

Info

Publication number: CN2550957Y
Application number: CN 02275680
Authority: CN
Inventors: 潘声洪
Original assignee: Individual
Current assignee: Individual
Priority date: 2002-07-10
Filing date: 2002-07-10
Publication date: 2003-05-14
Anticipated expiration: 2012-07-10

Abstract

The utility model relates to a compound magnetic variation alternator for automobiles which adopts both the permanent magnet and the excitation coil for excitation, comprising a stator, an excitation coil, and a rotor, wherein, the rotor comprises a front claw pole and a rear claw pole which rotate coaxially; the claws of the front and the rear claw pole are arrayed with even intervals, and one of the claw pole or at least the claws of the claw pole are made of magnetic conducive material, while the other claw pole or at least the claws of the other claw pole are made of permanent magnet with single magnetic pole, or are inlaid with a plurality of permanent magnets with single magnetic pole. The utility model has the advantages of the permanent magnet generator, such as energy saving, large specific power, and less failure; no matter how high the rotational speed of the generator is, the utility model prevents the output voltage from out of control which happens in the generator using the permanent magnet for power generation; thereby, the utility model enables to use the common voltage control circuit instead of the thyristor circuit, and is convenient for replacement and installation of common vehicles, and reduces the consumption cost greatly.

Description

Complex magnetically converting AC generator for vehicle

(1) technical field:

The utility model relates to a kind of automobile current generator, has particularly both used permanent magnet, uses the complex magnetically converting AC generator for vehicle of magnet exciting coil excitation again.

(2) background technology:

By the separately excited type AC generator for vehicle of magnet exciting coil excitation, littler because its fault of construction causes the failure rate height than merit, can not satisfy of the requirement of existing automobile to engine.Big for the ratio merit that makes generator, economize can, fault is little, existing high-grade automobile adopts permanent magnet generator more, but because permanent magnet generator can not adopt common voltage regulator, must adopt own unique controllable silicon regulating circuit, therefore, use permanent magnet generator must transform existing automobile voltage regulating line on the one hand; On the other hand, because the ghyristor circuit cost is higher, can't lower to the cost that uses permanent magnet generator always.In order to make a kind of ghyristor circuit (can use general pressure regulation adjuster) that both need not to use, it is little to have the permanent magnetic engine volume again, power is big, economizing can, the generator that fault is few, application number is 96201919.4, name is called the Chinese patent of " brushless Permanent Magnet ", disclose and a kind ofly both on preceding rear polar grab, be inlaid with permanent magnets, between utmost point pawl, be provided with the compound AC generator for vehicle of magnet exciting coil again, this generator Structure is to stud with permanent magnets at the front and back pawl on extremely, fore paw is extremely gone up or rear solid end extremely to go up adjacent utmost point pawl polarity identical, the polarity of relative utmost point pawl is opposite between the pawl utmost point of front and back, and the line of centres between them and shaft parallel, magnet exciting coil maintains static, its coiling direction also with shaft parallel, the magnetic pole loop direction that pawl is extremely gone up permanent magnet generation before and after making is close with the magnetic pole loop direction that pawl is extremely gone up magnet exciting coil; Voltage problem out of control during for solution generator high speed, this patent is to be wound with three automatically controlled windings on the yoke He under the magnet exciting coil, three automatically controlled windings are connected on respectively on the electronics winding of three phase places before the rectifier.During the motor high speed, the N of high speed rotating and S magnetic pole checker make the flux change of passing stator very big, automatically controlled winding can't be adjusted at voltage in the plateau range, therefore, this patent can't reach at motor low speed when changing at a high speed, the requirement of output voltage held stationary.

(3) utility model content:

The utility model will disclose a kind of when motor from low speed to high speed even hypervelocity when changing, the complex magnetically converting AC generator for vehicle of voltage held stationary.

Complex magnetically converting AC generator for vehicle, comprise stator, magnet exciting coil and the rotor that constitutes by the forward and backward pawl utmost point of coaxial rotation, the utmost point pawl that forward and backward pawl is extremely gone up evenly is spaced, different is: one of them pawl utmost point or at least the utmost point pawl on it make by permeability magnetic material, and another pawl utmost point or at least the utmost point pawl on it make by unipolarity magnetic pole permanent magnet or its on be inlaid with unipolarity magnetic pole permanent magnets.

Described permanent magnets is embedded on the working face of utmost point pawl, and permanent magnets is strip.

There is an included angle A in the orientation of inlaying of described permanent magnets for the direction of its length direction and rotating shaft.

It is big that the cross section of described stator upper core is the end, little trapezoidal of root.

The working face of described utmost point pawl is less than its medial surface.

The top end face of the utmost point pawl that described forward and backward pawl is extremely gone up is in same plane.

Because this generator has adopted permanent magnets to produce magnetic field, therefore, it have permanent magnet generator economize can,, advantage that fault lack bigger than merit.But utilized the generator of permanent magnet in the past, no matter be general permanent magnet generator, or compound generator, all be the N utmost point and the S utmost point that uses permanent magnet simultaneously, therefore, when the generator high speed, because the rotational frequency of N, the S utmost point is very high, therefore the phenomenon of output voltage off-rating all can appear; And this generator only uses the permanent magnet of unipolarity magnetic pole on extremely at a pawl, and when rotor speed was slow, unipolar permanent magnets compartment of terrain that pawl is extremely gone up was relative with stator core, made the interior magnetic flux cyclic variation of iron core; When the rotor speed value of reaching a certain height, because the adjacent pawl utmost point time interval relative with stator core shortens, under the influence of iron core self magnetic hysteresis, the magnetic flux change that is produced by permanent magnet in the iron core does not only increase, and diminishes on the contrary; When rotating speed was high, because permanent magnet adopts the unipolarity magnet, the magnetic flux that it produces almost reached no change in iron core, and magnetic field is constant relatively, and this moment, the adjuster of generator was not powered, and magnet exciting coil does not produce magnetic field.Therefore, no matter how high generator speed is, this generator can be as general using the generator of permanent magnet generating, voltage phenomenon out of control appears.So this generator can use general voltage control circuit, and need not to use ghyristor circuit, not only be convenient to general vehicle and change installation, and greatly reduce use cost.

(4) description of drawings:

Fig. 1 is a kind of enforcement square structure of this generator schematic diagram.

Fig. 2 is the another kind of execution mode structural representation of this generator.

Fig. 3 is a kind of execution mode rotor structure schematic diagram of this generator.

Fig. 4 is provided with situation planar development schematic diagram for the utmost point pawl of utmost point pawl end face in a plane.

The utmost point pawl that Fig. 5 extremely goes up for the front and back pawl axially superimposed utmost point pawl is provided with situation planar development schematic diagram.

Fig. 6 is a kind of execution mode polar claw structure of this generator schematic diagram.

Fig. 7 is the structural representation of a kind of execution mode stator of this generator upper core.

(5) embodiment:

Identical with existing compound generator, this generator also comprises casing 1, and by the stator 2 that iron core and coil constitute, stator 2 is fixed on the casing 1, on the stator 2 at interval be arranged with iron core 9, coil is around on the iron core 9; The rotor that also has the forward and backward pawl utmost point 3 by coaxial rotation to constitute, the forward and backward pawl utmost point 3 can be individually fixed in the rotating shaft 5, after also both can being connected with fixture 8, is connected with rotating shaft 5 again; Also has the coaxial magnet exciting coil 6 of a coiling direction and rotating shaft 5 between the forward and backward pawl utmost point 3.Be to increase the magnetic conduction ability, the iron core 9 on this generator unit stator 2 preferably as shown in Figure 7, its cross section is trapezoidal that the termination is big, root is little; Rotor is made of the forward and backward pawl utmost point 3 of coaxial rotation, and the utmost point pawl 7 on the forward and backward pawl utmost point 3 is as Fig. 4, shown in Figure 5 staggered mutually; Utmost point pawl 7 on the forward and backward pawl utmost point 3 can axially superimposed, can be not superimposed yet, or separated by a distance, but in order to increase power, and the top end face 71 of utmost point pawl 7 preferably coexists in the plane as shown in Figure 4, does not take place axially superimposed.In order to ensure when rotor high-speed rotates, the out-of-control phenomenon of output voltage off-rating can not take place, use on can only one in the forward and backward pawl utmost point 3 or inlay permanent magnets 4, and permanent magnets 4 must be a unipolarity magnetic pole magnetic patch, the pole polarity that is permanent magnets 4 is the N utmost point or is the S utmost point, therefore, this pawl unipolarity magnetic pole very; The pawl utmost point on the other side is then made with permeability magnetic material, or its utmost point pawl is made with permanent magnetic material at least.The method that makes the pawl utmost point 3 have permanent magnetism magnetic can be that to make the pawl utmost point 3 with permanent magnets also can only be to make utmost point pawl 7 with permanent magnets; For saving magnetic patch, also can on utmost point pawl 7, inlay permanent magnet block; And in order more to save magnetic patch, but also magnetic patch is inlayed in the compartment of terrain on utmost point pawl 7.Unipolarity magnetic pole magnetic patch then can be by arranging rare earth hydromagnetic iron and fixedly obtaining by polar requirement.In order rationally to utilize magnetic energy, permanent magnets 4 preferably is embedded on the utmost point pawl 7, on utmost point pawl 7 working faces 72 relative with iron core 9 on the stator 2.Permanent magnets 4 is preferably strip, and its orientation of inlaying can be that its length direction is parallel with rotating shaft 5, but when permanent magnets 4 width increased, the direction that its orientation of inlaying is preferably its length direction and rotating shaft 5 had an included angle A.For the magnetic field intensity of the working face 72 that increases utmost point pawl 7, and reduce magnetic and shake, opposite with in the past utmost point pawl, the working face 72 of utmost point pawl 7 should be less than its medial surface 73 on this generator, and preferably increase utmost point pawl 7 thickness, reduce the length of utmost point pawl 7.

Claims

1, complex magnetically converting AC generator for vehicle, comprise stator, magnet exciting coil and the rotor that constitutes by the forward and backward pawl utmost point of coaxial rotation, the even interleaved of the utmost point pawl that forward and backward pawl is extremely gone up is arranged, it is characterized in that: one of them pawl utmost point (3) or at least the utmost point pawl (7) on it make by permeability magnetic material, and another pawl utmost point (3) or at least the utmost point pawl (7) on it make by unipolarity magnetic pole permanent magnet or its on be inlaid with unipolarity magnetic pole permanent magnets (4).

2, complex magnetically converting AC generator for vehicle according to claim 1 is characterized in that: described permanent magnets (4) is embedded on the working face (72) of utmost point pawl (7), and permanent magnets (4) is strip.

3, complex magnetically converting AC generator for vehicle according to claim 1 is characterized in that: there is an included angle A in the orientation of inlaying of described permanent magnets (4) for the direction of its length direction and rotating shaft (5).

4, complex magnetically converting AC generator for vehicle according to claim 2 is characterized in that: there is an included angle A in the orientation of inlaying of described permanent magnets (4) for the direction of its length direction and rotating shaft (5).

5, according to any one described complex magnetically converting AC generator for vehicle in the claim 1～4, it is characterized in that: it is big that the cross section of described stator (2) upper core (9) is the end, little trapezoidal of root.

6, according to any one described complex magnetically converting AC generator for vehicle in the claim 1～4, it is characterized in that: the working face (72) of described utmost point pawl (7) is less than its medial surface (73).

7, complex magnetically converting AC generator for vehicle according to claim 5 is characterized in that: the working face (72) of described utmost point pawl (7) is less than its medial surface (73).

8, according to any one described complex magnetically converting AC generator for vehicle in the claim 1～4, it is characterized in that: the top end face (71) of the utmost point pawl (7) on the described forward and backward pawl utmost point (3) is in same plane.

9, complex magnetically converting AC generator for vehicle according to claim 5 is characterized in that: the top end face (71) of the utmost point pawl (7) on the described forward and backward pawl utmost point (3) is in same plane.

10, complex magnetically converting AC generator for vehicle according to claim 6 is characterized in that: the top end face (71) of the utmost point pawl (7) on the described forward and backward pawl utmost point (3) is in same plane.