Automobile electromagnetic energy-feeding motor

Abstract

The present invention discloses an automobile electromagnetic energy feeding motor, comprising a housing, a brushless inner rotor and an output shaft, wherein the housing is composed of a first cavity and a second cavity, wherein the brushless inner rotor is placed in the first cavity; in the first cavity, multiple groups of main excitation coils are wound along the circumference of the brushless inner rotor, and two adjacent main excitation coils are connected by wires; in the second cavity, magnetic powder oil is injected, and an oil stirring mechanism is sleeved on the output shaft in the second cavity, multiple groups of auxiliary excitation coils are wound along the circumference of the second cavity, and two adjacent main excitation coils are connected by wires, and the main excitation coil and the auxiliary excitation coil are connected by wires, and an excitation wire protection shell is sleeved on the housing, and the excitation wire protection shell is arranged concentrically with the housing. The present invention can be used independently or installed on a braking system or an independent suspension without destroying the original structure and performance of the vehicle.

Description

Technical Field

[0001] The invention relates to a motor device, in particular to an automobile electromagnetic energy feeding motor. Background Art

[0002] The motor, as an electromagnetic device, can realize the conversion or transmission of electric energy according to the law of electromagnetic induction. With the increasing maturity of motor technology, the power of the motor is getting larger and larger. The larger the power, the higher the speed of the motor needs to be according to the power calculation formula: P=F*V. However, the performance improvement of the motor braking system in the prior art is very little. Due to the limited braking efficiency and heat dissipation performance of the motor, most motors cannot recover the energy generated by the rotational inertia during braking, which is prone to overload, not easy to save energy, and poor smoothness. At the same time, it also has a certain impact on the structure of motor parts. Therefore, it is necessary to improve the prior art to solve the above technical problems. Summary of the invention

[0003] The purpose of the present invention is to provide an automotive electromagnetic energy feeding motor, which can improve the stability of the motor during rotation and shutdown conditions, and solve the problem of excessive reverse drag load while not significantly affecting the kinetic energy recovery efficiency of the motor after shutdown.

[0004] The present invention provides an automotive electromagnetic energy feeding motor, comprising a shell, a brushless inner rotor and an output shaft, wherein the shell is composed of a first cavity and a second cavity, and the brushless inner rotor is placed in the first cavity; in the first cavity, a plurality of groups of main excitation coils are wound around the circumference of the brushless inner rotor; in the second cavity, magnetic powder oil is injected, an oil stirring mechanism is sleeved on the output shaft located in the second cavity, a plurality of groups of auxiliary excitation coils are wound around the circumference of the second cavity, and the main excitation coils are connected to the auxiliary excitation coils through a wire, and an excitation wire protection shell is sleeved on the shell, and the excitation wire protection shell is concentrically arranged with the shell.

[0005] A further improvement of the present invention is that the brushless inner rotor is rotatably connected to the housing via a first bearing, and the output shaft is rotatably connected to the housing via a second bearing.

[0006] A further improvement of the present invention is that the brushless inner rotor is coaxially arranged with the output shaft.

[0007] A further improved solution of the present invention is that a rotor shaft head is provided at one end of the brushless inner rotor, a rotor shaft opening is provided at one end of the output shaft, and the rotor shaft head is inserted into the rotor shaft opening;

[0008] The rotor shaft head is provided with a plurality of axial protrusions distributed circumferentially, the output shaft is provided with axial recesses matched with the axial protrusions, and each of the axial recesses is provided with an axial through groove.

[0009] A further improved solution of the present invention is that the motor further comprises a clutch locking mechanism, and the clutch locking mechanism is arranged in the axial recess.

[0010] A further improvement of the present invention is that the clutch locking mechanism includes a locking contact block and a spring, the locking contact block is composed of a contact, a contact foot and a cross plate, one end of the spring is fixed on the axial recess, the other end of the spring is in effective contact with the cross plate, the locking contact block is integrally engaged in the axial recess, and the contact foot of the locking contact block passes through the axial through groove and abuts against the axial protrusion.

[0011] A further improvement of the present invention is that the oil stirring mechanism consists of a sleeve and oil stirring blades, the end faces of the sleeve are respectively attached to the axial inner wall of the second cavity, the oil stirring blades are welded to the sleeve at equal distances, and an oil stirring blade groove is formed between two adjacent oil stirring blades.

[0012] A further improved solution of the present invention is that a plurality of positioning holes matching with the axial notch are distributed on the circumference of the sleeve; when the oil stirring mechanism is working, the contact is pressed against the positioning hole.

[0013] A further improvement of the present invention is that a plurality of toothed blades cooperating with the oil stirring mechanism are equidistantly distributed circumferentially inside the second cavity, and a toothed blade groove is formed between two adjacent toothed blades.

[0014] A further improvement of the present invention is that a plurality of oil flow holes are provided on the oil stirring blade.

[0015] Compared with the prior art, the present invention has the following obvious advantages:

[0016] 1. The present invention provides an automotive electromagnetic energy feeding motor. When the motor is connected to a power source, the main excitation coil begins to be energized. Under the action of the magnetic field of the main excitation coil, the brushless inner rotor is made of a magnet. At this time, the brushless inner rotor begins to rotate. The main excitation coil is connected to the auxiliary excitation coil through a wire. At this time, there is also current in the auxiliary excitation coil. At this time, the auxiliary excitation coil will also generate a magnetic field. The magnetic field generated by the auxiliary excitation coil will affect the magnetic powder arrangement of the oil in the second cavity. When the brushless inner rotor drives the oil stirring mechanism to start Rotation, the greater the current in the main excitation coil, the faster the rotation speed of the brushless inner rotor, which leads to a larger current in the auxiliary excitation coil. At this time, the magnetic powder arrangement in the oil is also denser. When the stirring blade rotates at high speed, the stirring resistance of the stirring blade is greater. The damping comes from the change in the concentration of the magnetic powder arrangement in the oil after the magnetic field generated by the auxiliary excitation coil, so that the main excitation coil can feed energy to the auxiliary excitation coil, and the auxiliary excitation coil adjusts the arrangement of the magnetic powder in the oil in the second oil chamber to achieve the effect of linear damping deceleration of different sizes corresponding to different speeds.

[0017] 2. The present invention provides an automotive electromagnetic energy feeding motor, in which a brushless inner rotor is coaxially arranged with an output shaft, and the brushless inner rotor is inserted into the rotor shaft opening of the output shaft through the rotor shaft head, and a clutch locking mechanism is arranged in the axial recess, and the axial recess is pushed against the axial protrusion by the axial push of the output shaft. Since the front ends of the axial protrusions are not at the same height, a lift block is provided on the axial protrusion, and when pushed in the axial direction, the axial protrusion can lift the contact foot of the locking contact block, and since the locking contact block is elastic, the cross plate of the locking contact block contacts with the spring, and the spring has a reset function, and at this time the contact of the locking contact block can be pressed against the positioning of the sleeve in the oil stirring mechanism. When the output shaft is rotated together with the brushless inner rotor, the oil stirring mechanism cannot work. At this time, the motor can output power directly through the rotor, thus avoiding unnecessary energy loss when the motor outputs high power. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic cross-sectional diagram of the overall structure of an automotive electromagnetic energy feeding motor according to the present invention.

[0019] Figure 2 The schematic diagram of the structure of the brushless inner rotor of the present invention is

[0020] Figure 3 The schematic diagram of the structure of the output shaft of the present invention is

[0021] Figure 4 The structural schematic diagram of the oil stirring mechanism of the present invention is

[0022] Figure 5 Schematic diagram of the housing structure of the present invention

[0023] Figure 6 The schematic diagram of the structure of the clutch locking mechanism of the present invention is

[0024] In the figure, 1-brushless inner rotor, 2-main excitation coil, 3-first cavity, 4-housing, 5-second cavity, 6-sleeve, 7-oil stirring blade, 8-output shaft, 9-auxiliary excitation coil, 10-locking contact block, 11-spring, 101-rotor shaft head, 102-axial protrusion, 103-lift block, 501-toothed blade, 502-toothed blade groove, 601-positioning hole, 701-oil stirring blade groove, 702-oil flow hole, 801-rotor shaft mouth, 802-axial recess, 803-axial through groove, 1001-contact, 1002-contact foot, 1003-cross plate. DETAILED DESCRIPTION

[0025] The present invention will be further described below in conjunction with the accompanying drawings.

[0026] Example 1

[0027] like Figure 1-6 As shown, the present invention provides an automotive electromagnetic energy feeding motor, including a shell 4, a brushless inner rotor 1 and an output shaft 8. The shell 4 is composed of a first cavity 3 and a second cavity 5. The brushless inner rotor 1 is placed in the first cavity 3; in the first cavity 3, a plurality of groups of main excitation coils 2 are distributed and wound along the circumference of the brushless inner rotor 1; in the second cavity 5, magnetic powder oil is injected, and an oil stirring mechanism is sleeved on the output shaft 8 located in the second cavity 5, and a plurality of groups of auxiliary excitation coils 9 are distributed and wound along the outer circumference of the second cavity 5, and the main excitation coil 2 and the auxiliary excitation coil 8 are connected by a wire, and an excitation wire protection shell is also sleeved on the shell 4, and the excitation wire protection shell is concentrically arranged with the shell 4.

[0028] The brushless inner rotor 1 is coaxially arranged with the output shaft 8, a rotor shaft head 101 is provided at one end of the brushless inner rotor 1, a rotor shaft opening 801 is provided at one end of the output shaft 8, the rotor shaft head 101 is inserted into the rotor shaft opening 801, and the brushless inner rotor 1 is rotatably connected to the housing 4 through a first bearing, and the output shaft 8 is rotatably connected to the housing 4 through a second bearing.

[0029] There are four axial protrusions distributed on the circumference of the rotor shaft head 101 , each of which is provided with a lift block 103 . There are four axial recesses 802 distributed on the circumference of the rotor shaft opening 801 , each of which is provided with an axial through groove 803 .

[0030] The motor also includes a locking contact block 10 and a spring 11. The locking contact block 10 consists of a contact 1001, a contact foot 1002 and a cross plate 1003. One end of the spring 11 is fixed on the axial recess 802, and the other end of the spring 11 is in effective contact with the cross plate 1003. The locking contact block 1001 is integrally engaged in the axial recess 802, and the contact foot 1003 of the locking contact block 1001 passes through the axial through groove 803 and abuts against the axial protrusion 102.

[0031] The oil stirring mechanism is composed of a sleeve 6 and an oil stirring blade 7. The end faces of the sleeve 6 are respectively attached to the axial inner wall of the second cavity 5. The oil stirring blades 7 are welded to the sleeve 6 at equal distances, and an oil stirring blade groove 701 is formed between two adjacent oil stirring blades 7. Four positioning holes 601 matching the axial notches 802 are distributed on the sleeve 6 on the circumference; when the oil stirring mechanism is working, the contact 1001 presses on the positioning hole 601.

[0032] A plurality of toothed blades 501 cooperating with the oil stirring mechanism are equidistantly distributed in the second cavity 5 , and a toothed blade groove 502 is formed between two adjacent toothed blades 501 . A plurality of oil flow holes 702 are also provided on the oil stirring blade 7 .

[0033] During operation, after the motor is connected to the power supply, the main excitation coil 2 begins to be energized. Under the action of the magnetic field of the main excitation coil 2, the brushless inner rotor 1 is made of a magnet. At this time, the brushless inner rotor 1 begins to rotate, and the main excitation coil 2 is connected to the auxiliary excitation coil 9 through a wire. At this time, there is also current in the auxiliary excitation coil 9. At this time, the auxiliary excitation coil 9 will also generate a magnetic field. The magnetic field generated by the auxiliary excitation coil 9 will affect the magnetic powder arrangement of the oil in the second cavity 5; when the brushless inner rotor 1 drives the oil stirring mechanism to start rotating, the main excitation coil 2, the faster the rotation speed of the brushless inner rotor 1 is, which leads to a larger current in the auxiliary excitation coil 9. At this time, the magnetic powder arrangement in the oil is also denser. When the stirring blade 7 rotates at a high speed, the stirring resistance of the stirring blade 7 is greater. The damping comes from the change in the concentration of the magnetic powder arrangement in the oil after the magnetic field generated by the auxiliary excitation coil 9, so that the main excitation coil 2 can feed energy to the auxiliary excitation coil 9, and the auxiliary excitation coil 9 adjusts the arrangement of the magnetic powder in the oil in the second cavity 5 to achieve the effect of linear damping deceleration of different sizes corresponding to different speeds.

[0034] The brushless inner rotor 1 is coaxially arranged with the output shaft 8. The brushless inner rotor 1 is inserted into the rotor shaft opening 801 of the output shaft 8 through the rotor shaft head 101. The clutch locking mechanism is arranged in the axial recess 802. Through the axial push of the output shaft 8, the axial recess 802 pushes against the axial protrusion 102. Since the front ends of the axial protrusions 102 are not at the same height, a lift block 103 is provided on the axial protrusion 102. When pushed in the axial direction, the axial protrusion 102 can lift the contact foot 1002 of the locking contact block 10. Since the locking contact block 10 is elastic, the cross plate 1003 of the locking contact block 10 is in contact with the spring 11. The spring 11 has a reset function. At this time, the contact 1001 of the locking contact block 10 can be pushed against the positioning hole of the sleeve 6 in the oil stirring mechanism. , the oil stirring mechanism is locked and can rotate along the output shaft 8; similarly, when the output shaft 8 is pushed axially in the opposite direction, the lift block 103 can no longer function, resulting in the axial protrusion 102 being unable to lift the contact foot 1002 of the locking contact block 10. Since the locking contact block 10 is elastic, the cross plate 1003 of the locking contact block 10 is in contact with the spring 11, and the spring 11 has a reset function. At this time, the contact 1001 of the locking contact block 10 can no longer be pressed against the positioning hole 601 of the sleeve 6 in the oil stirring mechanism. When the brushless inner rotor 1 drives the output shaft 8 to rotate together, the oil stirring mechanism cannot work. At this time, the motor can directly output power through the brushless inner rotor 1, avoiding unnecessary energy loss when the motor is outputting high power.

[0035] This type of automotive electromagnetic energy-feeding motor can achieve three working conditions:

[0036] (1) Kinetic energy recovery condition

[0037] In order to improve the smoothness of the motor under the condition of stopping, after the power supply is stopped, the main excitation coil 2 stops supplying power. Due to the inertia of the output shaft 8, the output shaft 8 will drive the brushless inner rotor 1 to continue rotating. At this time, the motor will still rotate at high speed. Because there is residual magnetism on the magnetic pole core of the brushless inner rotor 1, an induced potential appears on a group of main excitation coils 2 wrapped around the outer circumference of the first cavity 3. After being rectified by a single-phase full-wave rectifier, it is input into a group of auxiliary excitation coils 9 on the outer circumference of the second cavity 5, and an AC excitation magnetic field is established, so that a three-phase potential appears in the group of auxiliary excitation coils 9. After being rectified by a rotating rectifier bridge, the potential is input into a group of main excitation coils 2 on the outer circumference of the first cavity 3, and an AC excitation magnetic field is established. The main generating magnetic field is set up to generate an electric potential in the main excitation coil 2 on the outer circumference of the first cavity 3, and the electric potential can be stored in an external battery to complete the energy recovery; the AC excitation magnetic field in the auxiliary excitation coil 9 can also act on the magnetic powder oil, and the magnetic field generated by the auxiliary excitation coil 9 will affect the magnetic powder arrangement of the oil in the second cavity 5, and the output shaft 8 and the oil stirring mechanism are locked through the clutch locking mechanism. When the output shaft 8 rotates, it can drive the oil stirring blades 7 to rotate. At this time, the output shaft 8 can be braked by the oil stirring blades 7, which solves the problem of avoiding excessive reverse load after the motor is shut down without significantly affecting the kinetic energy recovery efficiency.

[0038] (2) Slow speed condition

[0039] Because the main excitation coil 2 and the auxiliary excitation coil 9 are interconnected, there is also current in the auxiliary excitation coil 9 at this time. At this time, the auxiliary excitation coil 9 will also generate a magnetic field. The magnetic field generated by the auxiliary excitation coil 9 will affect the magnetic powder arrangement of the oil in the second cavity 5; when the brushless inner rotor 1 drives the oil stirring mechanism to start rotating, the larger the current in the main excitation coil 2, the faster the rotation speed of the brushless inner rotor 1, which will cause the current in the auxiliary excitation coil 9 to be larger. At this time, the magnetic powder arrangement in the oil is also denser, and the oil stirring resistance of the oil stirring blade 7 is greater when the oil stirring blade 7 rotates at a high speed. The damping comes from the change in the concentration of the magnetic powder arrangement in the oil after the magnetic field generated by the auxiliary excitation coil 9, so that the main excitation coil 2 can feed energy to the auxiliary excitation coil 9, and the concentration of the magnetic powder oil in the second cavity 5 can be adjusted to achieve the effect of linear damping deceleration of different sizes corresponding to different speeds.

[0040] (3) Motor direct drive condition

[0041] The output shaft 8 is unlocked from the oil stirring mechanism by the clutch locking mechanism. When the output shaft 8 is pushed axially in the opposite direction, the lift block 103 cannot continue to function, resulting in the axial protrusion 102 being unable to lift the contact foot of the locking contact block 10. Since the locking contact block 10 is elastic, the cross plate 1003 of the locking contact block 10 is in contact with the spring 11, and the spring 11 has a reset function. At this time, the contact of the locking contact block 10 cannot continue to be pressed against the positioning hole 601 of the sleeve 6 in the oil stirring mechanism. When the brushless inner rotor 1 drives the output shaft 8 to rotate together, the oil stirring mechanism cannot work. At this time, the motor can directly output power through the brushless inner rotor 1, avoiding unnecessary energy loss when the motor is outputting high power.

[0042] The above shows and describes the basic principles and main features of the present invention and the advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention to be protected. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. An automotive electromagnetic energy-feeding motor, comprising a housing (4), a coaxially arranged brushless inner rotor (1) and an output shaft (8), characterized in that: The housing (4) is composed of a first cavity (3) and a second cavity (5), the brushless inner rotor (1) being placed in the first cavity (3); a plurality of groups of main excitation coils (2) are wound around the circumference of the brushless inner rotor (1) in the first cavity (3); the second cavity (5) is filled with magnetic powder oil, an oil stirring mechanism is sleeved on the output shaft (8) located in the second cavity (5), a plurality of groups of auxiliary excitation coils (9) are wound around the outer circumference of the second cavity (5), and the main excitation coils (2) and the auxiliary excitation coils (9) are connected by wires, and an excitation wire protection shell is sleeved on the housing (4), and the excitation wire protection shell is arranged concentrically with the housing (4); The brushless inner rotor (1) is provided with a rotor shaft head (101), a plurality of axial protrusions (102) are circumferentially distributed on the rotor shaft head (101), an axial recess (802) matching the axial protrusion (102) is provided on the output shaft (8), and each of the axial recesses (802) is provided with an axial through groove (803); the motor further comprises a clutch locking mechanism, the clutch locking mechanism is arranged in the axial recess (802); the clutch locking mechanism comprises a locking contact block (10) and a spring (11), and the locking contact block (10) is composed of a contact block (1001), a contact foot (1002) and a transverse plate (1003); The oil stirring mechanism is composed of a sleeve (6) and an oil stirring blade (7); a plurality of positioning holes (601) matching with the axial notch (802) are distributed on the circumference of the sleeve (6); when the oil stirring mechanism is in operation, the contact (1001) in the clutch locking mechanism presses against the positioning hole (601); The brushless inner rotor (1) is rotatably connected to the housing (4) via a first bearing, and the output shaft (8) is rotatably connected to the housing (4) via a second bearing; One end of the spring (11) is fixed on the axial recess (802), the other end of the spring (11) is in effective contact with the transverse plate (1003), the locking contact block (10) is integrally engaged in the axial recess (802), and the contact foot (1002) of the locking contact block (10) passes through the axial through groove (803) and abuts against the axial protrusion (102); The end faces of the sleeve (6) are respectively attached to the axial inner wall of the second cavity (5); the oil stirring blades (7) are welded to the sleeve (6) at equal distances; and an oil stirring blade groove (701) is formed between two adjacent oil stirring blades (7).

2. The automotive electromagnetic energy feeding motor according to claim 1, characterized in that: The rotor shaft head (101) is arranged at one end of the brushless inner rotor (1), and a rotor shaft opening (801) is arranged at one end of the output shaft (8), and the rotor shaft head (101) is inserted into the rotor shaft opening (801).

3. The automotive electromagnetic energy feeding motor according to claim 1, characterized in that: A plurality of toothed blades (501) cooperating with the oil stirring mechanism are equidistantly distributed circumferentially inside the second cavity (5), and a toothed blade groove (502) is formed between two adjacent toothed blades (501).

4. The automotive electromagnetic energy feeding motor according to claim 1, characterized in that: The oil stirring blade is provided with a plurality of oil circulation holes (702).

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