CN217135299U - Permanent magnet composite system for starting and charging internal combustion engine - Google Patents

Abstract

The utility model discloses a permanent magnet compound system for starting and charging an internal combustion engine, relating to the technical field of starting and charging devices of internal combustion engines; the flywheel comprises a flywheel fixed on a main shaft of the internal combustion engine, a flywheel shell fixed on a shell of the internal combustion engine and a storage battery serving as an external power supply, wherein a rotor module is arranged on the outer wall of the flywheel, a stator module matched with the rotor module is arranged on the inner side wall of the flywheel shell, an invertible controller is arranged on the outer wall of the flywheel shell, and the stator module, the invertible controller and the storage battery are sequentially connected. The utility model integrates the stator module on the flywheel shell and the rotor module on the flywheel, thereby saving the driving parts, increasing the compactness of space and increasing the reliability; and the bidirectional inversion of the function of the single-group structure is realized, and a larger and more accurate power supply can be provided compared with the traditional belt drive power generation principle.

Description

Permanent magnet composite system for starting and charging internal combustion engine

Technical Field

The utility model relates to an internal combustion engine's start charging device technical field, in particular to internal combustion engine start charging permanent magnetism combined system.

Background

An internal combustion engine is a device for converting chemical energy of fuel into mechanical energy, and is widely applied to the fields of traditional fuel vehicles, fuel machinery, instruments and the like.

When an internal combustion engine is started, an external mechanical driving source is needed, a main shaft of the internal combustion engine is driven to reach a certain rotating speed, and then the internal combustion engine can work independently, in the aspect of starting and charging of the starting power source, a starting motor and a relay movable gear set are generally arranged outside the internal combustion engine, the internal combustion engine is started by using a storage battery, a charging generator is additionally arranged outside the internal combustion engine, the power of the internal combustion engine is transmitted through a belt and a belt pulley, mechanical energy is converted into electric energy, and the storage battery of the starting motor is charged, so that the internal combustion engine has the following defects:

the whole starting mechanical transmission chain and the charging mechanical transmission chain are relatively independent, the structure is complex, the occupied space is large, the reliability is low, and frequent maintenance is required.

Therefore, the utility model provides an internal combustion engine starts permanent magnet combined system that charges.

SUMMERY OF THE UTILITY MODEL

In view of this, embodiments of the present invention are intended to provide a starting charging permanent magnet compound system for an internal combustion engine, so as to solve or alleviate the technical problems existing in the prior art, and at least provide a useful choice.

The embodiment of the utility model provides a technical scheme is so realized: the internal combustion engine starts permanent magnet combined system that charges, including the flywheel that is fixed in the internal combustion engine main shaft, the flywheel shell that is fixed in the internal combustion engine shell and the battery as external power source, the outer wall of flywheel is provided with the rotor module, the inside wall of flywheel shell is provided with the stator module that matches with the rotor module, just the outer wall of flywheel shell is provided with reversible controller, stator module, reversible controller, battery connect gradually.

In some embodiments, an air gap exists between the minimum inner diameter of the stator module and the maximum outer diameter of the rotor module.

In some embodiments, the rotor module comprises a permanent magnet aluminum framework and arc trapezoid permanent magnet blocks; the permanent magnet aluminum framework is fixedly clamped with the arc trapezoid permanent magnet blocks through grooves formed in the permanent magnet aluminum framework, and the clamping surface is coated with magnetic adhesive.

In some embodiments, the section of the circular trapezoid permanent magnet block is a circular trapezoid, and the chord length of the outer circular arc of the circular trapezoid is smaller than that of the inner circular arc thereof.

In some embodiments, adjacent circular arc trapezoidal permanent magnet blocks are arranged in an opposite way.

In some embodiments, the rotor module further comprises a fan pressing plate, the fan pressing plate is annular, and a boss matched and corresponding to the groove of the permanent magnet aluminum framework is arranged in the middle of one side of the fan pressing plate.

In some embodiments, fan blades are uniformly and radially and fixedly mounted on the other side of the fan pressing plate, and a mounting circular hole for mounting and fixing with a flywheel is formed in the inner wall of the fan pressing plate.

In some embodiments, the stator module comprises a stator core, a coil frame and a three-phase winding, wherein tooth grooves are uniformly distributed in a circular manner on the inner wall of the stator core, the coil frame is embedded in the inner wall of the tooth grooves, and the three-phase winding is wound on the inner wall of the coil frame.

In some embodiments, the reversible controller comprises a voltage boosting unit, a frequency modulation unit and an inversion unit, wherein the voltage boosting unit is connected with the positive electrode and the negative electrode of the storage battery.

The embodiment of the utility model provides a owing to adopt above technical scheme, it has following advantage:

1. the internal combustion engine starts the permanent magnet composite system that charges, through with stator module integration on the bell housing, with rotor module integration on the flywheel to reach the saving of driving medium, increased the compactedness in space, thereby increase the reliability.

2. The internal combustion engine starts the permanent magnet composite system that charges, the stator module passes through the reversible controller and connects in the battery, when needing to start, the battery realizes the power supply through the reversible controller to magnetic force drive rotor module drives the flywheel rotatory, provides mechanical energy for internal combustion engine's start-up, after finishing starting, rotor module receives the flywheel drive to rotate, thereby rethread stator module realizes the function of charging to the battery, thereby realized the two-way contravariant of function of single group structure.

3. Compared with the traditional belt drive power generation principle, the internal combustion engine starting charging permanent magnet compound system can provide a larger and more accurate power supply.

The foregoing summary is provided for the purpose of description only and is not intended to be limiting in any way. In addition to the illustrative aspects, embodiments, and features described above, further aspects, embodiments, and features of the present invention will be readily apparent by reference to the drawings and following detailed description.

Drawings

In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings needed to be used in the embodiments or technical descriptions will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present application, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

FIG. 1 is a sectional view of the whole structure of the present invention;

FIG. 2 is a cross-sectional structural view of the permanent magnet rotor of the present invention;

FIG. 3 is a sectional view of a stator core according to the present invention;

fig. 4 is a three-phase winding structure diagram of the present invention;

fig. 5 is a structural diagram of the reversible controller of the present invention.

Reference numerals:

the device comprises an internal combustion engine, a flywheel shell, a flywheel, a reversible permanent magnet motor, a permanent magnet rotor, a permanent magnet aluminum framework, a circular arc trapezoidal permanent magnet block, a fan pressing plate, a winding stator, a stator iron core, a coil frame, a three-phase winding, a winding controller, a booster unit, a frequency modulation unit, a winding motor, a motor.

Detailed Description

In the following, only certain exemplary embodiments are briefly described. As those skilled in the art will recognize, the described embodiments may be modified in various different ways, all without departing from the spirit or scope of the present invention. Accordingly, the drawings and description are to be regarded as illustrative in nature, and not as restrictive.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", and the like, indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or to implicitly indicate the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically limited otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally formed; the connection can be mechanical connection, electrical connection or communication; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

In the present disclosure, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact between the first and second features, or may comprise contact between the first and second features not directly. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly above and obliquely above the second feature, or simply meaning that the first feature is at a lesser level than the second feature.

Embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

Example 1:

as shown in fig. 1-5, the internal combustion engine starting charging permanent magnet composite system includes a flywheel 3 fixed on a main shaft of an internal combustion engine 1, a flywheel housing 2 fixed on a housing of the internal combustion engine 1, and a storage battery 17 as an external power supply, wherein a rotor module 5 is arranged on an outer wall of the flywheel 3, a reversible permanent magnet motor 4 is composed of the stator module 9 and the rotor module 5, a stator module 9 matched with the rotor module 5 is arranged on an inner side wall of the flywheel housing 2, an invertible controller 13 is arranged on an outer wall of the flywheel housing 2, and the stator module 9, the invertible controller 13, and the storage battery 17 are sequentially connected; according to the device, the stator module 9 is integrated on the flywheel shell 2, and the rotor module 5 is integrated on the flywheel 3, so that transmission parts are saved, the space compactness is increased, and the reliability is improved; and the stator module 9 is connected to the storage battery 17 through the reversible controller 13, when the internal combustion engine 1 needs to be started, the storage battery 17 supplies power through the reversible controller 13, so that the rotor module 5 is driven by magnetic force to drive the flywheel to rotate, mechanical energy is provided for starting the internal combustion engine 1, after the internal combustion engine 1 is started, the rotor module 5 is driven by the flywheel 3 to rotate, and the function of charging the storage battery 17 is achieved through the stator module 9.

In this embodiment: an air gap exists between the minimum inner diameter of the stator module 9 and the maximum outer diameter of the rotor module 5, in this embodiment, the specific size of the air gap is not limited, and the air gap may be arranged according to the conventional method, and is preferably 0.5 mm.

In this embodiment: as shown in fig. 2, the rotor module 5 includes a permanent magnet aluminum framework 6 and an arc trapezoid permanent magnet 7, in this embodiment, the material of the permanent magnet aluminum framework 6 is not limited, and is preferably: permanent magnet aluminium skeleton 6 is the ring form that the aluminium alloy material processed into, permanent magnet aluminium skeleton 6 is fixed with circular arc trapezoidal permanent magnetism 7 joints through its inside recess of seting up, and the joint face coating has the magnetism viscose, and the recess only has one end to reach permanent magnet aluminium skeleton 6 tang department, and the breach does not have the aluminium lamination here, and the aluminium lamination of its opposite side is 5mm along axis direction thickness, and its excircle thickness that has the groove is 1.5 mm.

In this embodiment, the number and specific shape of the arc-shaped trapezoidal permanent magnet 7 are not limited, and it is preferable that: the arc trapezoidal permanent magnet blocks 7 are of a circular array 32-block structure, the arc trapezoidal permanent magnet blocks 7 are formed by sintering rubidium iron boron rare earth materials, the cross sections of the arc trapezoidal permanent magnet blocks are arc trapezoids, the chord length of the outer circular arc of each arc trapezoid is smaller than that of the inner circular arc of each arc trapezoid, and the magnetic poles of the adjacent arc trapezoidal permanent magnet blocks 7 are arranged oppositely; in this embodiment, the residual magnetic induction intensity of each arc trapezoidal permanent magnet 7 is not limited, and is preferably: the remanence of the arc trapezoid permanent magnet 7 is 1.2T.

In this embodiment: the rotor module 5 further comprises a fan pressing plate 8, the fan pressing plate 8 is annular, a boss matched and corresponding to the groove of the permanent magnet aluminum framework 6 is arranged in the middle of one side of the fan pressing plate 8, the boss and the groove are in interference fit, and the interference fit amount is 0.3mm-0.1 mm; in this embodiment, the height of the boss is not limited, and it is preferable that: the height of the boss is 5 mm; the fan blades are uniformly welded on the other side of the fan pressing plate 8 in the radial direction, in the embodiment, the specific number of the fan blades is not limited, and the following is preferable: the number of the fan blades is 12, and the inner wall of the fan pressing plate 8 is provided with a mounting round hole for mounting and fixing with the flywheel 3; during the installation, earlier with the inboard coating magnetism viscose of the recess of the trapezoidal permanent magnetism piece 7 outside of circular arc and permanent magnetism aluminium skeleton 6, insert the bottom of recess with the trapezoidal permanent magnetism piece 7 of circular arc according to the crisscross distribution of magnetic pole afterwards, fix fan clamp plate 8 and permanent magnetism aluminium skeleton 6 through the cooperation of boss with the recess afterwards, utilize the bolt and flywheel 3 fixed with the installation round hole of fan clamp plate 8, can accomplish the installation of whole rotor module 5.

In order to solve the installation problem of the stator module 9; as shown in fig. 3, the stator module 9 includes a stator core 10, a coil frame 11 and a three-phase winding 12, and tooth slots are uniformly distributed in a circular shape on an inner wall of the stator core 10, in this embodiment, the specific number of the tooth slots is not limited, and is preferably: the number of the tooth grooves is 48, the coil frame 11 is embedded in the inner wall of the tooth grooves, and the three-phase winding 12 is wound on the inner wall of the coil frame 11.

In this embodiment, the stator core 10 is formed by laminating silicon steel sheets, and in this embodiment, the thickness of each silicon steel sheet is not limited, preferably: the thickness is 0.35 mm.

In this embodiment, the coil frame 11 is made of high temperature resistant nylon by press molding; which on the one hand serves an insulating function and on the other hand also prevents damage to the coil form 11 caused by heating of the three-phase winding 12 by the current.

In this embodiment, the three-phase winding 12 is a fractional slot winding, each phase of fractional slot winding is formed by connecting 16 closed coils in series, coils of a U-phase fractional slot winding are wound in a tooth part coil frame 11 slot in sequence across one tooth every two teeth, coils of a U-phase fractional slot winding, a V-phase fractional slot winding and a W-phase fractional slot winding are wound in a tooth part coil frame 11 slot in sequence and adjacently, two conductor edges of an out-of-phase coil are arranged in a stator core 10 slot, and the stator module 9 wound with the three-phase winding 12 is subjected to insulation dip coating treatment; the stator module 9 after the insulating dipping varnish treatment is coaxial with the rotor module 5 on the flywheel 3, is pressed into the flywheel housing 2 and positioned at the position aligned with the permanent magnet rotor, and the winding stator is supported on the flywheel housing 2 by a set screw and can not shift.

The permanent magnetic flux of the device is emitted from the N pole of the arc trapezoidal permanent magnet 7 of the rotor module 5, passes through the air gap, passes through the tooth space of the stator core 10, the magnet yoke and the tooth space of the stator core 10 through the air gap, returns to the S pole of the adjacent arc trapezoidal permanent magnet 7 of the rotor module 5, and the magnetic circuit of the adjacent arc trapezoidal permanent magnet 7 is conducted by the flywheel 3 to form a permanent magnetic flux loop.

Example 2:

the internal combustion engine starts the permanent magnet complex system that charges, as shown in fig. 1-5, in order to solve the reversible transformation problem of the electric current; the present embodiment is modified from embodiment 1 as follows: the reversible controller 13 comprises a boosting unit 14, a frequency modulation unit 15 and an inversion unit 16, wherein the boosting unit 14 is connected with the positive electrode and the negative electrode of the storage battery 17; the voltage of the storage battery 17 is increased to a required voltage, the frequency modulation unit 15 gradually increases the frequency of the inverter power supply from zero to adjust the frequency of the alternating current power supply required when the internal combustion engine 1 rises from zero speed to idle speed, the inverter unit 16 inverts the power supply increased by the voltage of the storage battery 17 through the voltage increasing unit 14 into the frequency of the alternating current power supply required when the internal combustion engine 1 rises from zero speed to idle speed, and the inverter unit 16 can also step down and rectify a three-phase alternating current power supply emitted by the stator module 9 into a direct current power supply for charging the storage battery 17 when the internal combustion engine 1 starts to operate and drives the rotor module 5.

The working principle of motion transmission and current transmission is as follows: when the internal combustion engine 1 needs to be started, the charging permanent magnet compound system is started, the direct current power supply of the storage battery 17 is switched on, the voltage of the storage battery 17 is boosted to the required voltage by the boosting unit 14 of the reversible inverter controller 13, and then the frequency of the reversible power supply of the reversible inverter unit 16 is gradually increased from zero through the frequency modulation unit 15 to be adjusted to the frequency of the alternating current power supply required when the internal combustion engine 1 is increased from zero speed to idle speed, so that the internal combustion engine 1 is increased from zero speed to idle speed, and the starting process of the internal combustion engine 1 is completed. After the internal combustion engine is started, the internal combustion engine 1 drives the rotor module 5, so that the 400Hz three-phase alternating-current power supply generated by the stator module 9 is reduced in voltage and rectified into a direct-current power supply to charge the storage battery 17 through the inverter unit 16 of the inverter controller 13.

The working principle of motion transmission, current transmission and magnetic field transmission is as follows: the three-phase alternating current power supply is provided for the stator module 9, after the three-phase winding 12 is electrified, a rotating magnetic field rotating in a certain direction is generated on the stator core 10, the rotating magnetic field of the stator core 10 penetrates through an air gap to attract the magnetic field of the arc trapezoid permanent magnet 7 to rotate in a certain direction together, the internal combustion engine 1 is started, the internal combustion engine 1 drives the rotor module 5 to rotate in a magnetic field after being started and operated, and the conductors of the three-phase winding 12 of the stator module 9 cut the rotating magnetic field of the rotor module 5 to induce the power supply, so that the 400Hz three-phase alternating current power supply is generated.

When the internal combustion engine 1 rotates within the range of 750r/min to 3000r/min, the stator module 9 emits a broadband wide-voltage three-phase alternating-current power supply, and the broadband wide-voltage three-phase alternating-current power supply is subjected to voltage stabilization and rectification control by the invertible controller 13 and outputs a direct-current power supply with 14V or 28V direct-current voltage and high stability precision; and the direct current power supply outputting other direct current voltage grades can be designed according to the requirement.

The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily think of various changes or substitutions within the technical scope of the present invention, which should be covered by the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims (9)

1. Internal combustion engine starts permanent magnet combined system that charges, including flywheel (3) that are fixed in internal combustion engine (1) main shaft, flywheel shell (2) that are fixed in internal combustion engine (1) shell and battery (17) as external power source, its characterized in that: the outer wall of flywheel (3) is provided with rotor module (5), the inside wall of flywheel casing (2) is provided with stator module (9) that match with rotor module (5), just the outer wall of flywheel casing (2) is provided with reversible controller (13), stator module (9), reversible controller (13), battery (17) connect gradually.

2. The internal combustion engine starting charging permanent magnet compound system according to claim 1, characterized in that: an air gap exists between the minimum inner diameter of the stator module (9) and the maximum outer diameter of the rotor module (5).

3. The internal combustion engine starting charging permanent magnet compound system according to claim 1, characterized in that: the rotor module (5) comprises a permanent magnet aluminum framework (6) and an arc trapezoid permanent magnet block (7); the permanent magnet aluminum framework (6) is fixedly clamped with the arc trapezoid permanent magnet blocks (7) through grooves formed in the permanent magnet aluminum framework, and magnetic viscose is coated on the clamping surface.

4. The internal combustion engine starting charging permanent magnet compound system according to claim 3, characterized in that: the section of the arc trapezoid permanent magnet (7) is in an arc trapezoid shape, and the chord length of the outer arc of the arc trapezoid is smaller than that of the inner arc thereof.

5. The internal combustion engine starting charging permanent magnet compound system according to claim 4, characterized in that: the adjacent arc trapezoid permanent magnets (7) are arranged in an opposite way.

6. The internal combustion engine starting charging permanent magnet compound system according to claim 3, characterized in that: the rotor module (5) further comprises a fan pressing plate (8), the fan pressing plate (8) is circular, and a boss corresponding to the groove of the permanent magnet aluminum framework (6) in a matched mode is arranged in the middle of one side of the fan pressing plate (8).

7. The internal combustion engine starting charging permanent magnet compound system according to claim 6, characterized in that: fan blades are uniformly and radially and fixedly installed on the other side of the fan pressing plate (8), and a mounting round hole used for being fixedly installed with the flywheel (3) is formed in the inner wall of the fan pressing plate (8).

8. The internal combustion engine starting charging permanent magnet compound system according to claim 1, characterized in that: the stator module (9) comprises a stator core (10), a coil frame (11) and a three-phase winding (12), tooth grooves are uniformly distributed in a circular mode on the inner wall of the stator core (10), the coil frame (11) is embedded in the inner wall of the tooth grooves, and the three-phase winding (12) is in winding connection with the inner wall of the coil frame (11).

9. The internal combustion engine starting charging permanent magnet compound system according to claim 1, wherein the reversible controller (13) comprises a voltage boosting unit (14), a frequency modulation unit (15) and an inversion unit (16), and the voltage boosting unit (14) is connected with the positive electrode and the negative electrode of the storage battery (17).

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