KR20170079659A - Alternator for Vehicle - Google Patents
Alternator for Vehicle Download PDFInfo
- Publication number
- KR20170079659A KR20170079659A KR1020150190458A KR20150190458A KR20170079659A KR 20170079659 A KR20170079659 A KR 20170079659A KR 1020150190458 A KR1020150190458 A KR 1020150190458A KR 20150190458 A KR20150190458 A KR 20150190458A KR 20170079659 A KR20170079659 A KR 20170079659A
- Authority
- KR
- South Korea
- Prior art keywords
- slip ring
- brush
- rotor
- regulator
- assembly
- Prior art date
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Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K13/00—Structural associations of current collectors with motors or generators, e.g. brush mounting plates or connections to windings; Disposition of current collectors in motors or generators; Arrangements for improving commutation
- H02K13/003—Structural associations of slip-rings
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K11/00—Structural association of dynamo-electric machines with electric components or with devices for shielding, monitoring or protection
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K13/00—Structural associations of current collectors with motors or generators, e.g. brush mounting plates or connections to windings; Disposition of current collectors in motors or generators; Arrangements for improving commutation
- H02K13/10—Arrangements of brushes or commutators specially adapted for improving commutation
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K9/00—Arrangements for cooling or ventilating
- H02K9/02—Arrangements for cooling or ventilating by ambient air flowing through the machine
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K7/00—Constructional details common to different types of electric apparatus
- H05K7/20—Modifications to facilitate cooling, ventilating, or heating
- H05K7/2039—Modifications to facilitate cooling, ventilating, or heating characterised by the heat transfer by conduction from the heat generating element to a dissipating body
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K7/00—Constructional details common to different types of electric apparatus
- H05K7/20—Modifications to facilitate cooling, ventilating, or heating
- H05K7/2089—Modifications to facilitate cooling, ventilating, or heating for power electronics, e.g. for inverters for controlling motor
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Motor Or Generator Current Collectors (AREA)
- Synchronous Machinery (AREA)
Abstract
The present invention relates to a vehicle alternator, and more particularly, to a vehicle alternator in which a slip ring of a disc and a ring is applied in place of a rotor slip ring arranged axially on the outer periphery of a conventional rotor end .
According to an embodiment of the present invention, there is provided a vehicular alternator that uniformly adjusts an induced voltage in association with a commutator, the automotive alternator including: a first slip ring disposed on a plane perpendicular to a rotation axis of the rotor at one end of the rotor, A second slip ring disposed at an end of the rotor at an outer side of the first slip ring and formed in a ring shape so as to have a concentric circle with the first slip ring; A slip ring assembly including an insulating portion disposed between the first slip ring and the second slip ring so as to be spaced apart from the slip ring assembly; A regulator provided for adjusting a voltage; And a brush provided to interconnect the slip ring assembly and the regulator.
Description
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an automotive alternator, and more particularly, to a vehicle alternator in which a slip ring having a disk and a ring shape is applied instead of a rotor slip ring arranged axially on the outer periphery of a conventional cylindrical rotor end Invention.
2. Description of the Related Art In general, a vehicle is equipped with various electric and electronic devices that are operated by electric power supplied from a generator and a battery, and a charging device is provided with a generator as a center for stable supply of electric power to be supplied to the electric and electronic devices. Although a direct current generator and an alternator are used as generators, an alternator that maintains stability at low speed and high speed is widely used.
As the automotive alternator, a three-phase alternator generally called an alternator is used in order to increase the generated voltage at low speed and to exhibit stable performance at high speed. The three-phase alternator is connected to the crankshaft of an automobile engine, receives power during engine rotation, performs power generation, and charges the battery.
1 is a cross-sectional view schematically showing a general automotive alternator.
As shown in FIG. 1, the automotive alternator includes a
Specifically, the rotor assembly is formed into a cylindrical shape, and comprises two claw poles and a field winding (coil) interposed therebetween. The rotor assembly generates the rotating magnetic field needed to move the alternator. The stator assembly is formed of a plurality of windings surrounding the rotor or a plurality of iron plates laminated with a thin steel plate to induce an alternating current. The relative speed of the rotor and the stator is generated by rotating in synchronism with the rotating magnetic field. The rectifier assembly includes a rectifier diode or a MOSFET to rectify the three-phase alternating current to direct current.
The regulator cooperates with the rectifier assembly to serve as a voltage regulator that uniformly adjusts the generator voltage irrespective of the load and rotational speed of the generator. The main purpose of the voltage adjustment is to prevent malfunction of the electric device due to voltage pulsation and to protect various electric parts from overload. The regulator is housed in the generator housing and is compactly assembled. Depending on the mounting type, the brush holder may be integrated with or connected to the brush holder.
2 is a view showing the internal structure of the
Specifically, the
2, the
Since the
During the operation of the alternator, wear between the slip ring and the brush will be worn more frequently in either brush due to the temperature difference. 1 and 2 together, the rotor fan and the brush on the far side are disadvantageous to the air circulation due to the cover on the back side and the brush near the rotor fan is advantageous for air circulation. However, according to the related art, there is no proper method for compensating the abrasion phenomenon due to a temperature difference, as well as forming the rotor and the brushes orthogonal to each other. In addition, a brush having a sufficiently long length is provided and then pressed by a spring Method, and the brush is worn down by a certain length, and the whole brush assembly is replaced.
In addition, the
SUMMARY OF THE INVENTION It is an object of the present invention to overcome the drawbacks of the prior art in order to enhance the abrasion resistance of brushes by ultimately changing the shape of the rotor slip ring and the shape of the brush assembly.
According to an embodiment of the present invention, there is provided a vehicular alternator that uniformly adjusts an induced voltage in association with a commutator, the automotive alternator including: a first slip ring disposed on a plane perpendicular to a rotation axis of the rotor at one end of the rotor, A second slip ring disposed at an end of the rotor at an outer side of the first slip ring and formed in a ring shape so as to have a concentric circle with the first slip ring; A slip ring assembly including an insulating portion disposed between the first slip ring and the second slip ring so as to be spaced apart from the slip ring assembly; A regulator provided for adjusting a voltage; And a brush provided to interconnect the slip ring assembly and the regulator.
According to an embodiment of the present invention, the brush includes a first brush contacting the first slip ring and a second brush contacting the second slip ring. The first brush and the second brush are connected to the rotation axis of the rotor, And extend in parallel directions to contact the first slip ring and the second slip ring.
According to an embodiment, the first brush may be formed to have a shorter length than the second brush.
According to one embodiment, the regulator includes a lower plate of a regulator adjacent to the inner housing of the alternator and an upper plate located on the opposite side of the lower plate, and a circuit element for voltage adjustment may be fixedly installed on the inner wall of the upper plate .
According to an embodiment, the regulator may include a plurality of radiating fins protruded to dissipate heat generated from the circuit elements to the outside.
Here, the radiating fin may be disposed on the upper plate or the lower plate.
The AC generator according to an embodiment of the present invention may be configured such that the shape of the slip ring is changed to a disk having a concentric circle and a slip ring having a ring shape instead of the slip ring arranged axially parallel to the outer periphery of a conventional rotor end, And ultimately, the durability of the rotor and the brush assembly is improved.
In addition, in the present invention, the two rotor brushes are constructed so that the temperature difference between them is not large, and the effect of compensating the difference in wear performance, which has occurred in the prior art, from the structural aspect can be obtained.
Further, by improving the wear performance, it is possible to reduce the length of the extension of the brush, thereby making it possible to reduce the size of the brush assembly.
Furthermore, the conventional brush can be disposed in parallel with the rotor axis direction, which is different from the conventional brushes arranged in the direction perpendicular to the rotor axis direction, thereby providing an advantage of securing a free space inside the AC generator housing.
1 is a sectional view schematically showing a general automotive alternator;
2 is a view showing an internal configuration of a brush assembly according to the prior art;
Figure 3 schematically illustrates the construction of a brush assembly and a rotor assembly in accordance with the prior art;
4 is a conceptual view of a rotor assembly according to an embodiment of the present invention;
FIG. 5 is a schematic view illustrating the configuration of a regulator, a brush assembly, and a rotor assembly according to an embodiment of the present invention. FIG.
6 is a front view of a regulator, brush assembly according to an embodiment of the present invention;
7 is a cross-sectional view schematically showing a vehicle alternator according to an embodiment of the present invention.
FIG. 8 is an enlarged cross-sectional view enlarging a configuration of a rotor assembly and a brush assembly of a vehicular alternator according to an embodiment of the present invention; FIG.
9 is a cross-sectional view schematically showing a vehicle alternator according to another embodiment of the present invention.
Hereinafter, a vehicle AC generator according to the present invention will be described in detail with reference to the accompanying drawings.
The embodiments described below are provided so that those skilled in the art can easily understand the technical idea of the present invention, and thus the present invention is not limited thereto. In addition, the matters described in the attached drawings may be different from those actually implemented by the schematic drawings to easily describe the embodiments of the present invention.
It is to be understood that when an element is referred to as being connected or connected to another element, it may be directly connected or connected to the other element, but it is to be understood that there may be other elements in between.
The term "connection" as used herein includes both direct and indirect connections of one member and another member, and includes all physical connections and electrical connections such as bonding, attachment, fastening, bonding, and coupling.
Also, the expressions such as 'first, second', etc. are used only to distinguish a plurality of configurations, and do not limit the order or other features between configurations.
The singular forms "a", "an" and "the" include plural referents unless the context clearly dictates otherwise. The word "comprise" or "having" is used herein to mean that a feature, a number, a step, an operation, an element, an accessory, or a combination thereof is included in the description, Steps, operations, elements, accessories, or combinations thereof, may be added.
First, a rotor assembly (rotor assembly) will be described with reference to FIGS. 3 to 4 for better understanding of the present invention.
3 is a conceptual diagram of a brush and a rotor assembly according to the prior art. 4 is a conceptual view of a rotor assembly according to an embodiment of the present invention.
3 and 4, the
The
Hereinafter, a vehicle alternator according to an embodiment of the present invention will be described with reference to FIG. 4 and FIGS. 5 to 8. FIG.
FIG. 5 is a schematic view illustrating a configuration of a regulator, a brush assembly, and a rotor assembly according to an embodiment of the present invention. Referring to FIG. 6 is a front view illustrating a regulator and a brush assembly according to an embodiment of the present invention. 7 is a cross-sectional view schematically showing a vehicle alternator according to an embodiment of the present invention. 8 is an enlarged cross-sectional view of an enlarged configuration of a rotor assembly and a brush assembly of an automotive alternator according to an embodiment of the present invention.
4 and 5, the automotive alternator according to an embodiment of the present invention is a vehicle alternator that uniformly adjusts an induced voltage in association with a commutator, The
The brush includes a
5 and 8, the
As described above, the wear between the slip ring and the brush is worn away more quickly in the brush far from the rotor fan. In the brush according to the prior art, a proper method for compensating for the wear due to the temperature difference A brush having a sufficiently long length is provided and the brush is pressed by a spring located at the rear. When the brush is worn down by a certain length, the entire brush assembly is replaced.
The
As described above, the alternator of the present invention is configured such that the slip rings 310 and 320 have different shapes from those of the prior art, and the direction of the
Referring to FIG. 6 and FIG. 7 together, the
According to an embodiment of the present invention, the
In addition, the radiating fin of the present invention may be installed on the upper plate side, but may be installed on the lower plate side for efficient space utilization.
In the alternator of the present invention as described above, the shape of the slip ring is changed to a disk having a concentric circle and a slip ring having a ring shape instead of the slip ring arranged axially parallel to the outer periphery of a conventional rotor end, And ultimately, the effect of improving the durability of the rotor and the brush assembly is exerted.
In addition, in the present invention, the two rotor brushes are constructed so that the temperature difference therebetween is not large, and the effect of compensating for the difference in wear performance, which has occurred in the prior art, can be obtained. In addition, it is also possible to compensate the fine temperature difference between the brushes in terms of arrangement and shape of the brushes unique to the present invention.
Further, by improving the wear performance, it is possible to reduce the length of the extension of the brush, thereby making it possible to reduce the size of the brush assembly.
Furthermore, the conventional brush can be disposed in parallel with the rotor axis direction, which is different from the conventional brushes arranged in the direction perpendicular to the rotor axis direction, thereby providing an advantage of securing a free space inside the AC generator housing.
The present specification is not intended to limit the present invention by the specific terms given. While the present invention has been described in connection with what is presently considered to be practical exemplary embodiments, it is to be understood that the invention is not limited to the disclosed embodiments, but, on the contrary, Modifications, alterations, and modifications can be made.
The scope of the present invention is defined by the appended claims rather than the foregoing description, and all changes or modifications derived from the meaning and scope of the claims and equivalents thereof are deemed to be included in the scope of the present invention. .
100: AC generator housing
101: AC generator inner housing
110, 200: Rotor assembly
120: Brush assembly
121: Brush holder
122: Brush head part
123: Brushes
124: spring
130: stator assembly
140: Regulator
150: rectifier
160: pulley
210:
220, 300: Rotor slip ring
230: Bobbin
240: Field coil
250: rotor excitation piece
260: Rotor fan
270: lead coil
280: Bearings
310: first slip ring
320: second slip ring
330:
Claims (6)
A first slip ring located on a plane perpendicular to the rotation axis of the rotor at one end of the rotor and formed in a disk shape; a second slip ring located at an end of the rotor on the outer side of the first slip ring, A slip ring assembly including a first slip ring and a second slip ring disposed between the first slip ring and the second slip ring so as to insulate the first slip ring and the second slip ring;
A regulator provided for adjusting a voltage; And
And a brush provided to interconnect the slip ring assembly and the regulator.
Wherein the brush comprises:
A first brush in contact with the first slip ring and a second brush in contact with the second slip ring,
Wherein the first brush and the second brush each extend in a direction parallel to a rotation axis of the rotor to contact the first slip ring and the second slip ring.
Wherein the first brush is formed to have a shorter length than the second brush.
The regulator
A lower plate of the regulator adjacent to the inner housing of the alternator and an upper plate located on the opposite side of the lower plate,
And a circuit element for voltage adjustment is fixedly installed on an inner wall of the upper plate.
Wherein the regulator includes a plurality of radiating fins protruded to dissipate heat generated from the circuit elements to the outside.
And the radiating fins are disposed on the upper plate or the lower plate.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1020150190458A KR20170079659A (en) | 2015-12-30 | 2015-12-30 | Alternator for Vehicle |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1020150190458A KR20170079659A (en) | 2015-12-30 | 2015-12-30 | Alternator for Vehicle |
Publications (1)
Publication Number | Publication Date |
---|---|
KR20170079659A true KR20170079659A (en) | 2017-07-10 |
Family
ID=59355554
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
KR1020150190458A KR20170079659A (en) | 2015-12-30 | 2015-12-30 | Alternator for Vehicle |
Country Status (1)
Country | Link |
---|---|
KR (1) | KR20170079659A (en) |
-
2015
- 2015-12-30 KR KR1020150190458A patent/KR20170079659A/en unknown
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