A commutation regulator and an alternator having the same

Abstract

A commutation regulator and an AC generator having the commutation regulator, the commutation regulator is installed on the AC generator, and comprises: a housing, a positive magnetic field pole, a negative magnetic field pole, a regulator circuit and a commutation switch, the commutation switch comprises a first normally open end, a second normally open end, a first normally closed end, a second normally closed end, a first common end, a second common end, a first digital control pin and a second digital control pin, the first common end and the second common end are respectively connected to a carbon brush, the first normally open end and the second normally closed end are respectively connected to the positive magnetic field pole, the second normally open end and the first normally closed end are respectively connected to the negative magnetic field pole, the first digital control pin and the second digital control pin are respectively connected to a main control module of the regulator circuit, the main control module outputs a control signal to control the commutation switch to realize the conversion of the magnetic field polarity of the first common end and the second common end. The present invention also provides an AC generator having the commutation regulator.

Description

Technical Field

[0001] The present invention relates to an AC generator and a regulator used on a motor vehicle, in particular to a commutation regulator capable of realizing magnetic field polarity conversion and an AC generator with the commutation regulator. Background Art

[0002] Based on the power demand of electrical appliances, motor vehicles are generally equipped with AC generators, which rely on electromagnetic principles to convert the mechanical energy of the engine into electrical energy to provide power supply for the electrical appliances and batteries of the vehicle. As the requirements for the reliability of key components of the vehicle continue to increase, it is an inevitable trend to increase the life of the generator itself, and carbon brushes are key wear parts in the entire generator structure.

[0003] The carbon brushes of the regulator in the generator are connected to the slip rings contained in the rotor by the elastic force of the spring, ensuring that the rotor can realize the function of rotating the magnetic field, thereby realizing the external output function of the AC generator.

[0004] The wear of brushes can be divided into mechanical wear and electrolytic wear. In practical applications, electrolytic wear causes eccentric wear of the upper and lower brushes, which reduces the life of the carbon brushes. Figure 1 , Figure 1 This is the principle diagram of the excitation circuit of the prior art. As can be seen from the figure, the existing regulator structure can only ensure that the current flows into one carbon brush and out of the other carbon brush, so that the two carbon brushes of the regulator have high and low potentials. During the long-term power-on process, the two carbon brushes have uneven wear due to the gain and loss of electrons, which causes one end of the carbon brush to wear faster and reduces the overall life of the carbon brush. Summary of the invention

[0005] The technical problem to be solved by the present invention is to provide a commutation regulator and an AC generator equipped with the commutation regulator in view of the above-mentioned defects of the prior art, so that the carbon brushes of the AC generator can reduce the eccentric wear caused by electrical corrosion wear in actual work and improve the life of the generator.

[0006] In order to achieve the above object, the present invention provides a commutation regulator installed on an AC generator of a motor vehicle, wherein the commutation regulator comprises:

[0007] A shell and a positive magnetic field pole, a negative magnetic field pole, a regulator circuit and a reversing switch installed on the shell, the reversing switch comprising a first normally open end, a second normally open end, a first normally closed end, a second normally closed end, a first common end, a second common end, a first digital control pin and a second digital control pin, the first common end and the second common end are respectively connected to the carbon brushes of the AC generator, the first normally open end and the second normally closed end are respectively connected to the positive magnetic field pole, the second normally open end and the first normally closed end are respectively connected to the negative magnetic field pole, the first digital control pin and the second digital control pin are respectively connected to a main control module of the regulator circuit, and the main control module outputs a control signal to control the reversing switch to achieve the conversion of the magnetic field polarity of the first common end and the second common end.

[0008] The above-mentioned commutation regulator, wherein the first common end is connected to the first carbon brush of the AC generator, the first carbon brush is connected to the rotor slip ring of the AC generator; the second common end is connected to the second carbon brush of the AC generator, the second carbon brush is connected to the rotor slip ring

[0009] The above-mentioned commutation regulator, wherein, when the main control module outputs a conduction control signal to the first digital control pin and the second digital control pin, the first common terminal and the first normally open terminal are turned on, the second common terminal and the second normally open terminal are turned on, the first common terminal is the positive electrode, and the second common terminal is the negative electrode; when the main control module outputs a cutoff control signal to the first digital control pin and the second digital control pin, the first common terminal and the first normally closed terminal are turned on, the second common terminal and the second normally closed terminal are turned on, the first common terminal is the negative electrode, and the second common terminal is the positive electrode.

[0010] The above-mentioned commutation regulator, wherein the commutation regulator also includes a positive terminal, the positive terminal is connected to the power supply and function selection module of the regulator circuit, and the main control module is connected to the positive terminal.

[0011] In the above-mentioned commutation regulator, a switch tube is further arranged between the main control module and the positive terminal.

[0012] In the above-mentioned commutation regulator, a unidirectional conducting diode is further arranged between the positive pole of the magnetic field and the negative pole of the magnetic field.

[0013] In the above-mentioned reversing regulator, the reversing switch is also connected to the withstand voltage protection circuit of the regulator circuit, and the withstand voltage protection circuit is connected to the main control module.

[0014] In the above-mentioned commutation regulator, the commutation switch further includes a connection terminal.

[0015] In the above-mentioned commutation regulator, the commutation switch also includes a power supply terminal.

[0016] In order to better achieve the above-mentioned purpose, the present invention also provides a motor vehicle AC generator, including a front cover, a rear cover, a stator, a rotor, a reversing regulator, a rectifier element, a shield and a pulley, wherein the rotor is supported on the front cover and the rear cover through a rotor shaft, the stator is installed on the front cover and the rear cover corresponding to the rotor, the reversing regulator and the rectifier element are respectively installed on the rear cover, the pulley is connected to one end of the rotor shaft, the shield is arranged on the outside of the rectifier element, and the reversing regulator is connected to the slip ring of the rotor through a carbon brush, wherein the reversing regulator is the above-mentioned reversing regulator.

[0017] The technical effects of the present invention are:

[0018] The present invention adds a reversing switch in the regulator, cooperates with the signal instruction of the IC main control module, when the control signal IN1 inputs 1, COM1 and NO1 are turned on, and at the same time, the IN2 input is 1, COM2 and NO2 are turned on, and COM1 is F+ and COM2 is F-. Conversely, when the IN1 inputs 0 and the IN2 inputs 0, COM1 is F- and COM2 is F+. Through the IC control signal, the reversing switch realizes the positive and negative conversion of the magnetic field, thereby realizing the conversion of the positive and negative polarity of the carbon brush, reducing the eccentric wear of the carbon brush caused by the gain and loss of electrons at the positive and negative poles, thereby improving the overall life of the generator.

[0019] The present invention is described in detail below with reference to the accompanying drawings and specific embodiments, but is not intended to limit the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is the principle diagram of the excitation circuit of the prior art;

[0021] Figure 2 A cross-sectional view of the structure of a motor vehicle AC generator according to an embodiment of the present invention;

[0022] Figure 3 A schematic diagram of the structure of a reversing regulator according to an embodiment of the present invention;

[0023] Figure 4 It is a schematic diagram of the excitation circuit of a commutation regulator according to an embodiment of the present invention;

[0024] Figure 5 A connection diagram of a reversing switch according to an embodiment of the present invention;

[0025] Figure 6 FIG. 4 is a circuit diagram of a commutation switch according to an embodiment of the present invention.

[0026] Among them, the reference numerals

[0027] 1 Front cover

[0028] 2 Rear cover

[0029] 3. Stator

[0030] 4 Rotor

[0031] 5 Reversing regulator

[0032] 6. Rectification element

[0033] 7 Shield

[0034] 8 Pulley

[0035] 9 Rotor shaft

[0036] 10 Main control module

[0037] 11 Power supply and function selection module

[0038] 12 Withstand voltage protection circuit

[0039] 13 Housing

[0040] 14 First Carbon Brush

[0041] 15 Second carbon brush

[0042] 16 Reversing switch

[0043] P phase input terminal

[0044] B+ Positive terminal

[0045] B- Negative terminal

[0046] L Indicator lamp terminal

[0047] F+ Magnetic field positive

[0048] F- Negative magnetic field

[0049] V+ power supply terminal

[0050] NO1 First regular start

[0051] NO2 Second normal start

[0052] NC1 First normally closed terminal

[0053] NC2 Second normally closed terminal

[0054] COM1 First common port

[0055] COM2 Second common port

[0056] IN1 first digital control pin

[0057] IN2 Second digital control pin

[0058] W Terminal

[0059] F Carbon brush connection end DETAILED DESCRIPTION

[0060] The structural principle and working principle of the present invention are described in detail below in conjunction with the accompanying drawings:

[0061] See also Figure 2 , Figure 2 The structure cross-sectional view of a motor vehicle alternator according to an embodiment of the present invention. The motor vehicle alternator according to the present invention comprises a front cover 1, a rear cover 2, a stator 3, a rotor 4, a reversing regulator 5, a rectifying element 6, a shield 7 and a pulley 8. The rotor 4 is supported on the front cover 1 and the rear cover 2 through a rotor shaft 9. The stator 3 is mounted on the front cover 1 and the rear cover 2 corresponding to the rotor 4. The reversing regulator 5 and the rectifying element 6 are respectively mounted on the rear cover 2. The pulley 8 is connected to one end of the rotor shaft 9. The shield 7 is arranged on the outside of the rectifying element 6. The reversing regulator 5 is connected to the slip ring of the rotor 4 through a carbon brush. The composition, structure, relative position relationship, connection relationship and function of other parts of the alternator are all relatively mature existing technologies, so they will not be repeated here. Only the reversing regulator 5 of the present invention will be described in detail below.

[0062] See also Figure 3 , Figure 3The figure is a schematic diagram of the structure of a reversing regulator according to an embodiment of the present invention. The reversing regulator 5 of the present invention is installed on an AC generator of a motor vehicle. The reversing regulator 5 includes: a housing 13 and a magnetic field positive pole F+, a magnetic field negative pole F-, a regulator circuit and a reversing switch 16 installed on the housing 13. The reversing switch 16 includes a power supply terminal V+, a first normally open terminal NO1, a second normally open terminal NO2, a first normally closed terminal NC1, a second normally closed terminal NC2, a first common terminal COM1, a second common terminal COM2, a first digital control pin IN1 and a second digital control pin IN2. The first common terminal COM1 and the second common terminal COM2 are respectively connected to the carbon brushes of the AC generator, the first normally open terminal NO1 and the second normally closed terminal NC2 are respectively connected to the magnetic field positive pole F+, the second normally open terminal NO2 and the first normally closed terminal NC1 are respectively connected to the magnetic field negative pole F-, the first digital control pin IN1 and the second digital control pin IN2 are respectively connected to the main control module 10 of the regulator circuit, and the main control module 10 outputs a control signal to control the reversing switch 16 to achieve the conversion of the magnetic field polarity of the first common terminal COM1 and the second common terminal COM2. The reversing regulator 5 also includes a positive terminal B+, a negative terminal B-, a phase input terminal P and a charging indicator terminal L, wherein the positive terminal B+ is connected to the power supply and function selection module 11 of the regulator circuit, and the main control module 10 is connected to the positive terminal B+. A switch tube is also provided between the main control module 10 and the positive terminal B+. A unidirectional conducting diode is also provided between the magnetic field positive pole F+ and the magnetic field negative pole F-. The reversing switch 16 is also connected to the withstand voltage protection circuit 12 of the regulator circuit, and the withstand voltage protection circuit 12 is connected to the main control module 10. The reversing switch 16 also includes a connection terminal W and a power supply terminal V+.

[0063] See also Figure 4-Figure 6 , Figure 4 FIG. 1 is a schematic diagram of an excitation circuit of a commutation regulator according to an embodiment of the present invention. Figure 5 This is a connection diagram of a reversing switch according to an embodiment of the present invention. Figure 6The diagram is a reversing switch circuit diagram of an embodiment of the present invention. In this embodiment, when the main control module 10 outputs a conduction control signal to the first digital control pin IN1 and the second digital control pin IN2, the first common terminal COM1 and the first normally open terminal NO1 are conducted, the second common terminal COM2 and the second normally open terminal NO2 are conducted, the first common terminal COM1 is a positive electrode, and the second common terminal COM2 is a negative electrode; when the main control module 10 outputs a cutoff control signal to the first digital control pin IN1 and the second digital control pin IN2, the first common terminal COM1 and the first normally closed terminal NC1 are conducted, the second common terminal COM2 and the second normally closed terminal NC2 are conducted, the first common terminal COM1 is a negative electrode, and the second common terminal COM2 is a positive electrode. The first common terminal COM1 is connected to the first carbon brush 14 through the carbon brush connecting terminal F, and the first carbon brush 14 is connected to the slip ring of the rotor 4; the second common terminal COM2 is connected to the second carbon brush 15 through another carbon brush connecting terminal F, and the second carbon brush 15 is connected to the slip ring of the rotor 4, that is, through the IC control signal, the reversing switch 16 realizes the positive and negative conversion of the magnetic field, thereby realizing the conversion of the positive and negative polarity of the carbon brush, thereby reducing the abnormal eccentric wear of the carbon brush caused by the gain and loss of electrons at the positive and negative poles.

[0064] The present invention sends a control signal through the IC (Integrated Circuit) main control module 10, and the reversing switch 16 realizes the positive and negative conversion of the magnetic field by receiving the signal instruction of the IC main control module 10. Figure 4 When the reversing switch 16 receives the control signal from the IC main control module 10, for example, the first digital control pin IN1 inputs 1, the first common terminal COM1 and the first normally open terminal NO1 are turned on, and the second digital control pin IN2 inputs 1, and the second common terminal COM2 and the second normally open terminal NO2 are turned on, and the first common terminal COM1 is F+, and the second common terminal COM2 is F-. On the contrary, when the reversing switch 16 receives the control signal from the IC main control module 10, when the first digital control pin IN1 inputs 0, the first common terminal COM1 and the first normally closed terminal NC1 are turned on, and the second digital control pin IN2 inputs 0, and the second common terminal COM2 and the second normally closed terminal NC2 are turned on, so that the first common terminal COM1 is F-, and the second common terminal COM2 is F+, and the first common terminal COM1 is connected to the first carbon brush 14, and the first carbon brush 14 is connected to the rotor 4 slip ring. The second common terminal COM2 is connected to the second carbon brush 15, and the second carbon brush 15 is connected to the slip ring of the rotor 4, that is, through the IC control signal, the reversing switch 16 realizes the positive and negative conversion of the magnetic field, thereby realizing the conversion of the positive and negative polarity of the carbon brush, thereby reducing the abnormal eccentric wear of the carbon brush caused by the gain and loss of electrons at the positive and negative poles.

[0065] Of course, the present invention may have many other embodiments. Without departing from the spirit and essence of the present invention, those skilled in the art may make various corresponding changes and modifications based on the present invention, but these corresponding changes and modifications should all fall within the scope of protection of the claims attached to the present invention.

Claims

1. A reversing regulator, mounted on an AC generator of a motor vehicle, characterized in that: The commutation regulator comprises: A shell and a positive magnetic field pole, a negative magnetic field pole, a regulator circuit and a reversing switch mounted on the shell, wherein the reversing switch comprises a first normally open end, a second normally open end, a first normally closed end, a second normally closed end, a first common end, a second common end, a first digital control pin and a second digital control pin, wherein the first common end and the second common end are respectively connected to the carbon brushes of the AC generator, the first normally open end and the second normally closed end are respectively connected to the positive magnetic field pole, the second normally open end and the first normally closed end are respectively connected to the negative magnetic field pole, the first digital control pin and the second digital control pin are respectively connected to a main control module of the regulator circuit, and the main control module outputs a control signal to control the reversing switch to realize the conversion of the magnetic field polarity of the first common end and the second common end; When the main control module outputs a conduction control signal to the first digital control pin and the second digital control pin, the first common terminal and the first normally open terminal are connected, the second common terminal and the second normally open terminal are connected, the first common terminal is a positive electrode, and the second common terminal is a negative electrode; when the main control module outputs a cutoff control signal to the first digital control pin and the second digital control pin, the first common terminal and the first normally closed terminal are connected, the second common terminal and the second normally closed terminal are connected, the first common terminal is a negative electrode, and the second common terminal is a positive electrode; The commutation regulator also includes a positive terminal, which is connected to a power supply and function selection module of the regulator circuit, and the main control module is connected to the positive terminal.

2. The reversing regulator according to claim 1, characterized in that: The first common end is connected to a first carbon brush of the AC generator, and the first carbon brush is connected to a rotor slip ring of the AC generator; the second common end is connected to a second carbon brush of the AC generator, and the second carbon brush is connected to the rotor slip ring.

3. The reversing regulator according to claim 1, characterized in that: A switch tube is also arranged between the main control module and the positive terminal.

4. The reversing regulator according to claim 3, characterized in that: A unidirectional conducting diode is also arranged between the positive pole of the magnetic field and the negative pole of the magnetic field.

5. The reversing regulator according to claim 1 or 2, characterized in that: The reversing switch is also connected to the withstand voltage protection circuit of the regulator circuit, and the withstand voltage protection circuit is connected to the main control module.

6. The reversing regulator according to claim 1 or 2, characterized in that: The reversing switch also includes a connection terminal.

7. The reversing regulator according to claim 6, characterized in that: The reversing switch also includes a power supply terminal.

8. An AC generator for a motor vehicle, comprising a front cover, a rear cover, a stator, a rotor, a reversing regulator, a rectifying element, a shield and a pulley, wherein the rotor is supported on the front cover and the rear cover via a rotor shaft, the stator is mounted on the front cover and the rear cover corresponding to the rotor, the reversing regulator and the rectifying element are mounted on the rear cover respectively, the pulley is connected to one end of the rotor shaft, the shield is arranged on the outside of the rectifying element, the reversing regulator is connected to the slip ring of the rotor via a carbon brush, and is characterized in that: The reversing regulator is the reversing regulator according to any one of claims 1 to 7.

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