Electromagnetic splitting clutch system and electric driving system

Abstract

The invention discloses an electromagnetic splitting clutch system and an electric driving system.The electromagnetic splitting clutch system comprises a splitting mechanism and an electromagnetic mechanism, the splitting mechanism is used for cutting off or connecting power of a speed reducer, the electromagnetic mechanism is connected with the splitting mechanism, and the splitting mechanism is connected with the electromagnetic mechanism; the cutting mechanism comprises a movable end face tooth cover (9), movable end face teeth (14), a second-stage large gear (13), fixed end face teeth (18) and a movable push disc (11), the movable end face tooth cover (9) is connected with the second-stage large gear (13), the movable end face teeth (14) are arranged on the inner side of the movable end face tooth cover (9), and the fixed end face teeth (18) are arranged on the outer side of the movable end face tooth cover (9). The fixed end face teeth (18) are arranged between the movable end face teeth (14) and the second-stage large gear (13). The electromagnetic mechanism is arranged on the outer side of the movable push disc (11) in a sleeving mode. The invention has the advantages of high torque transmission efficiency, long service life, compact structure, convenience in arrangement in a vehicle and the like.

Description

Technical Field

[0001] The present application relates to the technical field of output shaft power splitting and electromagnetic splitting clutch systems, and in particular to an electromagnetic splitting clutch system and an electric drive system. Background Art

[0002] When driving on complex roads, the car may need to cut off or connect the power to the reducer output shaft. A typical scenario is when the car switches between four-wheel drive and two-wheel drive, which requires cutting off or connecting the power to the front / rear reducer.

[0003] In the related art, friction is often used to disconnect or connect the power of the output shaft of the reducer in the automobile. However, the torque transmitted by the friction differential power system is not efficient, and the friction differential power system is large in size and is not convenient to arrange in the vehicle. Summary of the Invention

[0004] The embodiments of the present application provide an electromagnetic split clutch system and an electric drive system, which connect or disconnect the power transmission from the secondary large gear to the output shaft by controlling the engagement and separation of the movable end face teeth and the fixed end face teeth, so as to provide an electromagnetic split clutch system for the output shaft output of a single-sided output or a differentialless system.

[0005] The embodiments of this application adopt the following technical solutions:

[0006] In a first aspect, an embodiment of the present application provides an electromagnetic split clutch system, wherein the system comprises: a split mechanism and an electromagnetic mechanism, wherein the split mechanism is used to cut off or connect the power of the reducer, and the electromagnetic mechanism is connected to the split mechanism.

[0007] The cutting mechanism includes: a movable end face tooth cover 9, a movable end face tooth 14, a secondary large gear 13, a fixed end face tooth 18 and a movable push plate 11, the movable end face tooth cover 9 is connected to the secondary large gear 13, the movable end face tooth 14 is arranged on the inner side of the movable end face tooth cover 9, and the fixed end face tooth 18 is arranged between the movable end face tooth 14 and the secondary large gear 13;

[0008] The electromagnetic mechanism is sleeved on the outer side of the movable push plate 11 .

[0009] In some embodiments, the cutting mechanism is connected to the external housing or frame structure via a support bearing 10.

[0010] The movable end face gear cover 9 is used to transmit power to the movable end face gear 14, so that the movable end face gear 14 can move axially relative to the movable end face gear cover 9 and rotate synchronously with the movable end face gear cover 9;

[0011] The fixed end face teeth 18 are used to be connected to the output shaft, so that the fixed end face teeth 18 can transmit power to the output shaft.

[0012] In some embodiments, a protruding connection structure 303 is provided on the movable end face gear 14 , and the protruding connection structure 303 contacts the movable push plate 11 and can drive the movable push plate 11 to rotate.

[0013] In some embodiments, the electromagnetic mechanism includes: a fixed yoke assembly 102 and a movable disk assembly 101, wherein the movable disk assembly 101 includes a sensor magnet 1, a movable disk 2, a guide disk 3, and a magnetic steel 4; the fixed yoke assembly 102 includes an iron core 5, a coil skeleton 6, an electromagnetic coil 7, and a fixed yoke 8.

[0014] The conductive disk 3 , the magnetic steel 4 , the iron core 5 , and the fixed magnetic yoke 8 together form an electromagnetic circuit, so that the electromagnetic coil 7 generates electromagnetic force when energized.

[0015] In some embodiments, a deep groove ball bearing 12 is provided on the movable push plate 11, and an elastic component 15 is further provided between the movable end face gear 14 and the secondary large gear 13;

[0016] When the electromagnetic coil 7 is energized with an engaging current, the movable disk assembly 101 is acted upon by an electromagnetic force, overcoming the elastic force of the elastic component 15 and moving axially toward the iron core 5, thereby pushing the deep groove ball bearing 12, the movable push plate 11, and the movable end face gear 14 to move axially, causing the second end face gear structure 302 on the movable end face gear 14 to mesh with the first end face gear structure 301 on the fixed end face gear 18;

[0017] At this time, the power is transmitted to the output shaft through the secondary large gear 13, the movable end face gear cover 9, the movable end face gear 14, and the fixed end face gear 18.

[0018] In some embodiments, when a separation current is applied to the electromagnetic coil 7, the movable disk assembly 101 is subjected to an electromagnetic force and, at the same time, moves axially away from the iron core 5 under the elastic force of the elastic component 15. The electromagnetic force and the elastic component 15 push the movable end face gear 14, the movable push plate 11, the deep groove ball bearing 12, and the movable disk assembly 101 to move axially, so that the second end face gear structure 302 on the movable end face gear 14 is disengaged from the first end face gear structure 301 on the fixed end face gear 18.

[0019] At this time, the power transmission path is cut off and the output shaft has no power connection with the motor.

[0020] In a second aspect, an embodiment of the present application further provides an electric drive system, wherein the electromagnetic split clutch system according to any one of claims 1 to 10 is adopted, and the electric drive system includes a reducer assembly 400, a left motor assembly 401, a right motor assembly 402, a controller assembly 410, and a junction box assembly 411.

[0021] The reducer assembly 400 includes a left reducer housing assembly 402 , a left transmission shaft system 403 , a middle reducer housing assembly 405 , a right transmission shaft system 407 , and a right reducer housing assembly 408 .

[0022] In some embodiments, under normal working conditions, the left motor assembly 401 and the right motor assembly 402 provide power independently, which is transmitted to the left and right output shafts by the left transmission shaft system 403 and the right transmission shaft system 407 in the reducer assembly 400.

[0023] In some embodiments, the left-side split clutch system 404 is disposed in the left-side transmission shaft system 403 , and the right-side split clutch system 406 is disposed in the right-side transmission shaft system 407 ;

[0024] When the power connection between the motor and the output shaft needs to be cut off, the electromagnetic mechanism performs a cutting action to separate the end face gear structure to complete the power blocking;

[0025] When the motor is required to provide more power, the electromagnetic mechanism performs an engagement action, causing the end face gear structure to engage and complete the power link connection.

[0026] At least one of the above-mentioned technical solutions adopted in the embodiments of the present application can achieve the following beneficial effects: the electromagnetic split clutch system provided in the embodiments of the present application is connected to the output shaft through movable end face teeth or fixed end face teeth, and the connection or disconnection of the power transmission from the secondary large gear to the output shaft is realized by controlling the engagement and separation of the movable end face teeth and the fixed end face teeth. It has the advantages of high torque transmission efficiency, long service life, compact structure, and easy layout in the vehicle. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] The drawings described herein are used to provide a further understanding of the present application and constitute a part of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings:

[0028] Figure 1 Schematic diagram of the internal structure of the electromagnetic split clutch system in the embodiment of the present application;

[0029] Figure 2 This is an axial cross-sectional view of the electromagnetic split clutch system in an embodiment of the present application;

[0030] Figure 3 This is a disassembled structural diagram of the electromagnetic split clutch system in an embodiment of the present application;

[0031] Figure 4 This is an axial cross-sectional view of the electromagnetic split clutch system in an embodiment of the present application;

[0032] Figure 5 This is a disassembled structural diagram of the electromagnetic split clutch system in an embodiment of the present application;

[0033] Figure 6 This is a disassembled structural diagram of the bistable electromagnetic mechanism of the electromagnetic split clutch system in an embodiment of the present application;

[0034] Figure 7 This is a disassembled structural diagram of the monostable electromagnetic mechanism of the electromagnetic split clutch system in the embodiment of the present application;

[0035] Figure 8 This is a disassembled structural diagram of the electromagnetic split clutch system in an embodiment of the present application.

[0036] Among them, 1. Position sensor magnet; 2. Moving disk; 3. Guide disk; 4. Magnetic steel; 5. Iron core; 6. Coil skeleton; 7. Clutch coil; 8. Fixed yoke; 9. Active end face gear cover; 10. Support bearing; 11. Active push plate; 12. Deep groove ball bearing; 13. Secondary gear; 14. Active end face gear; 15. Elastic component; 16. Needle roller bearing; 17. Thrust needle roller bearing; 18. Fixed end face gear; 19. Position sensor; 20. Armature plate; 21. Fixing bolt; 22. Bearing seat; 23. Thrust needle roller bearing; 24. Support bushing; 100. Bistable electromagnetic mechanism; 101. Moving disk assembly; 102. Fixed yoke assembly; 200. Monostable electromagnetic mechanism Mechanism; 201, armature plate assembly; 301, fixed end face tooth structure; 302, movable end face tooth structure; 303, raised connection structure; 304, fixed end face tooth structure; 305, movable end face tooth structure; 306, raised connection structure; 307, limiting boss; 400, reducer assembly; 401, left motor assembly; 402, left reducer housing assembly; 403, left transmission shaft system; 404, left split clutch system; 405, intermediate reducer housing assembly; 406, right split clutch system; 407, right split mechanism; 408, right reducer housing assembly; 409, right motor assembly; 410, controller assembly; 411, junction box assembly. DETAILED DESCRIPTION

[0037] To make the purpose, technical solutions, and advantages of this application more clear, the technical solutions of this application will be clearly and completely described below in conjunction with the specific embodiments of this application and the corresponding drawings. Obviously, the embodiments described are only part of the embodiments of this application, not all of them. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0038] The following describes in detail the technical solutions provided by various embodiments of the present application in conjunction with the accompanying drawings.

[0039] The embodiment of the present application provides an electromagnetic split clutch system, such as Figure 1 As shown, a schematic diagram of the internal structure of the electromagnetic cutting clutch system in an embodiment of the present application is provided, wherein the system comprises: a cutting mechanism and an electromagnetic mechanism, wherein the cutting mechanism is used to cut off or engage the power of the reducer, and the electromagnetic mechanism is connected to the cutting mechanism, and the cutting mechanism comprises: a movable end face tooth cover 9, a movable end face tooth 14, a secondary large gear 13, a fixed end face tooth 18 and a movable push plate 11, wherein the movable end face tooth cover 9 is connected to the secondary large gear 13, the movable end face tooth 14 is arranged on the inner side of the movable end face tooth cover 9, and the fixed end face tooth 18 is arranged between the movable end face tooth 14 and the secondary large gear 13; the electromagnetic mechanism is sleeved on the outer side of the movable push plate 11.

[0040] This electromagnetic split clutch system includes a split mechanism and an electromagnetic mechanism. The split mechanism can transmit power from the reducer intermediate shaft to the output shaft when the moving parts are not engaged, and can cut off power transmission when the moving parts are disengaged. The direct-magnetic electromagnetic mechanism is connected to the moving parts of the split mechanism via a movable push plate. By controlling the engagement and disengagement of the electromagnetic mechanism, the movement of the moving parts in the split mechanism is controlled.

[0041] It can be understood that the electromagnetic split clutch system can be applied to the output shaft output of a single-sided output or a system without a differential.

[0042] The electromagnetic mechanism of the electromagnetic split clutch system specifically described adopts a direct magnetic small coil configuration, which has achieved the goal of minimizing the structural size, has almost no impact on the overall size of the powertrain system, and the overall size is almost unchanged after actual application. Moreover, the electromagnetic split clutch can be flexibly arranged on the left or right side of the transmission parts such as gears that need to disconnect the power according to the powertrain structure. The direct magnetic small coil magnetic circuit in the specific electromagnetic split clutch system efficiently utilizes the magnetic field flux, has a high magnetic induction intensity utilization rate, and responds extremely quickly. There is no magnetic leakage on the magnetic circuit path, which effectively avoids magnetizing gears, bearings and other key rotating parts; the mechanical response time is within 15ms, and the overall action response time of the split clutch is from sending a command to receiving a signal, and the action is completed within 80ms, which can quickly respond to power requirements.

[0043] The cutting mechanism includes a secondary large gear 13, a fixed end face tooth 18, a movable end face tooth 14, a movable push plate 11, a movable end face tooth cover 9, an elastic component and a supporting component; the fixed end face tooth can be arranged on the secondary large gear 13, and can be an integrated structure or an independent component, and is placed between the secondary large gear 13 and the movable end face tooth 14.

[0044] When the fixed end face teeth are arranged on the secondary large gear as an integrated structure, the movable end face tooth cover 9 and the movable end face teeth are in a free rotation state, the movable end face tooth cover 9 is connected to the output shaft through a spline, and power is transmitted to the output shaft through the movable end face tooth cover 9; the movable end face tooth cover 9 is mutually supported by the secondary large gear through supporting structures such as bearings or sliding sleeves, and can rotate relative to each other; the movable end face tooth cover 9 is provided with an internal spline, and the movable end face teeth are provided with an external spline, and the movable end face teeth and the movable end face tooth cover 9 are connected by splines, so that the movable end face teeth and the movable end face tooth cover 9 can move axially relative to each other and rotate synchronously.

[0045] When the fixed end face teeth are used as an independent structure, the fixed end face teeth are in a free rotation state and are connected to the output shaft through a spline, and power is transmitted to the output shaft through the fixed end face teeth; the movable end face tooth cover 9 is fixedly connected to the secondary large gear through an interference connection or a bolt connection, and rotates synchronously with the secondary large gear; a spline structure is provided on the movable end face teeth, and the movable end face teeth rotate synchronously with the movable end face tooth cover 9 through the spline.

[0046] An elastic component is provided between the movable end face tooth and the secondary large gear, and a protruding connecting structure is provided on the movable end face tooth. The protruding connecting structure passes through the waist-shaped through hole on the movable end face tooth cover 9 to make axial contact or connection with the movable push plate. Under the action of the electromagnetic force of the electromagnetic mechanism and the elastic force of the elastic component, the movable end face tooth can move axially and engage and disengage with the fixed end face tooth.

[0047] like Figure 2 、 Figure 3 、 Figure 6 As shown, the cutting mechanism includes a movable end face gear cover 9 and a secondary large gear 13. The movable end face gear cover 9 is fixedly connected to the secondary large gear 13 by interference fit, and can also be fixedly connected to the secondary large gear 13 by welding, bolt connection, etc.

[0048] The movable end face teeth 14 are arranged on the inner side of the movable end face tooth cover 9 and are connected to the movable end face tooth cover through a spline, so that the movable end face tooth cover 9 can transmit power to the movable end face teeth 14, and the movable end face teeth 14 can move axially relative to the movable end face tooth cover 9 and rotate synchronously with the movable end face tooth cover 9.

[0049] The fixed end face teeth 18 are arranged between the movable end face teeth 14 and the secondary large gear 13, and are supported by needle roller bearings 16 and thrust needle roller bearings 17, wherein the needle roller bearings 16 and thrust needle roller bearings 17 can also use other supporting structures (such as sliding sleeves, sliding bearings, thrust ball bearings, etc.). The fixed end face teeth 18 are provided with internal splines for connecting with the output shaft, so that the fixed end face teeth 18 can transmit power to the output shaft.

[0050] In addition, the entire cutting mechanism is supported and connected to the external housing or frame structure via a support bearing 10 .

[0051] In one embodiment of the present application, the cutting mechanism is connected to the external housing or frame structure through a supporting bearing 10, and the movable end face tooth cover 9 is used to transmit power to the movable end face tooth 14 and enable the movable end face tooth 14 to move axially relative to the movable end face tooth cover 9 while rotating synchronously with the movable end face tooth cover 9; the fixed end face tooth 18 is used to be connected to the output shaft, so that the fixed end face tooth 18 can transmit power to the output shaft.

[0052] The movable end face teeth 14 are arranged on the inner side of the movable end face tooth cover 9 and are connected to the movable end face tooth cover through a spline, so that the movable end face teeth 14 can transmit power to the movable end face tooth cover 9, and enable the movable end face teeth 14 to move axially relative to the movable end face tooth cover 9 and rotate synchronously with the movable end face tooth cover 9; the fixed end face tooth structure 304 is arranged on the secondary large gear 13 and is a part of the secondary large gear 13.

[0053] In one embodiment of the present application, a protruding connection structure 303 is provided on the movable end face gear 14 , and the protruding connection structure 303 is in contact with the movable push plate 11 and can drive the movable push plate 11 to rotate.

[0054] The movable end face tooth is provided with a raised connection structure 303, which passes through the waist-shaped through hole on the movable end face tooth cover 14 and contacts the movable push plate 11; the raised connection structure is provided with a boss, which extends into the waist-shaped through hole provided on the movable push plate 11, and can drive the movable push plate 11 to rotate in a circle.

[0055] In one embodiment of the present application, the electromagnetic mechanism includes: a fixed magnetic yoke assembly 102 and a movable disk assembly 101, the movable disk assembly 101 includes a sensor magnet 1, a movable disk 2, a conductive magnetic disk 3 and a magnetic steel 4, the fixed magnetic yoke assembly 102 includes an iron core 5, a coil frame 6, an electromagnetic coil 7 and a fixed magnetic yoke 8, the conductive magnetic disk 3, the magnetic steel 4 and the iron core 5 and the fixed magnetic yoke 8 together form an electromagnetic circuit, so that the electromagnetic coil 7 generates electromagnetic force when energized.

[0056] The direct magnetic bistable electromagnetic mechanism 100 consists of a movable disk assembly 101 and a fixed magnetic yoke assembly 102. The movable disk assembly 101 consists of a sensor magnet 1, a movable disk 2, a guide magnetic disk 3, and a magnetic steel 4. The fixed magnetic yoke assembly 102 consists of an iron core 5, a coil frame 6, an electromagnetic coil 7, and a fixed magnetic yoke 8. One of the guide magnetic disks 3, two magnetic steels 4, two iron cores 5, and a fixed magnetic yoke 8 form an electromagnetic circuit, so that the electromagnetic coil 7 can generate sufficient electromagnetic force when energized. The sensor magnet 1 and the position sensor 19 can output the position signal of the movable disk assembly 101, so that the control circuit and the control software can obtain the working status of the electromagnetic mechanism in real time.

[0057] The working principle of the bistable electromagnetic mechanism 100 is:

[0058] When the electromagnetic mechanism 100 is in a separated state and the electromagnetic coil 7 is in a non-energized state, the electromagnetic coil 7 does not generate an electromagnetic force, and the elastic force of the elastic component 15 is greater than the magnetic force generated by the magnet 4, so that the movable disk assembly 101 is in a naturally separated position, that is, a large air gap is maintained between the magnet 4 and the iron core 5 on the movable disk assembly 101.

[0059] When the electromagnetic coil 7 is connected to the engagement current, the electromagnetic coil 7 generates an electromagnetic force on the movable disk assembly 101, so that the engagement force between the movable disk assembly 101, the electromagnetic coil 7 and the iron core 5 increases to a level greater than the elastic force of the elastic component 15, thereby causing the movable disk assembly 101 to move axially close to the iron core 5. When the end face of the movable end face tooth 14 contacts the end face of the secondary large gear, the movement stops. At this time, the movable disk assembly 101 and the iron core 5 are in the engagement position, that is, a small air gap is formed between the magnet 4 on the movable disk assembly 101 and the iron core 5; when the engagement action is completed, the current of the electromagnetic coil 7 is cut off, and the magnetic force generated by the magnet 4 is greater than the elastic force generated by the elastic component 15, and the movable disk assembly 101 will remain in the engagement state.

[0060] When the electromagnetic coil 7 is passed through a separation current, the electromagnetic coil 7 generates an electromagnetic force in the opposite direction to the magnetic force of the magnet 4, so that the resultant force of the electromagnetic force and the elastic force generated by the elastic component 15 is greater than the magnetic force generated by the magnet 4, and the movable disk assembly 101 moves axially away from the iron core 5. When the limiting boss 307 on the movable disk assembly 101 contacts the limiting surface on the external shell, the movement stops, and there is a large air gap state between the magnet 4 on the movable disk assembly 101 and the iron core 5.

[0061] like Figure 4 、 Figure 5 、 Figure 7 As shown, the cutting mechanism includes a movable end face gear cover 9, a secondary gear 13, and a supporting bushing 24. The supporting bushing 24 is interference-connected with the secondary gear 13, and can also be fixed by bolts, welding, etc.; the movable end face gear cover 9 is supported by the supporting bushing 24, the thrust needle roller bearing 23 and the secondary gear 13, and the supporting bushing 24 axially limits the movable end face gear cover 9, so that the relative rotation and axial relative fixation of the movable end face gear cover 9 and the supporting bushing 24 can be achieved. The thrust needle roller bearing 23 and the supporting bushing 24 can also be replaced by other components with supporting capabilities, such as Sliding sleeve, sliding bearing, etc.; at the same time, the movable end face gear cover 9 is provided with an internal spline for connecting with the output shaft, so that the movable end face gear cover 9 can transmit power to the output shaft; the movable end face gear 14 is provided on the inner side of the movable end face gear cover 9 and is connected to the movable end face gear cover through a spline, so that the movable end face gear 14 can transmit power to the movable end face gear cover 9, and the movable end face gear 14 can move axially relative to the movable end face gear cover 9 and rotate synchronously with the movable end face gear cover 9; the fixed end face gear structure 304 is provided on the secondary large gear 13 and is part of the secondary large gear 13;

[0062] The movable end face teeth are provided with a protruding connecting structure 303, which passes through the waist-shaped through-hole on the movable end face tooth cover 14 and contacts the movable push plate 11; the protruding connecting structure has a boss, which extends into the waist-shaped through-hole provided on the movable push plate 11, and can drive the movable push plate 11 to rotate in a circular motion;

[0063] The movable push plate 11 is equipped with a deep groove ball bearing 12. The outer ring of the deep groove ball bearing 12 cooperates with the bearing seat 22 of the monostable electromagnetic mechanism 200, so that the movable push plate 11 and the movable plate 2 can rotate relative to each other.

[0064] An elastic component 15 is provided between the movable end face tooth 14 and the secondary large gear 13. The elastic component can be a common coil spring, a wave spring, etc. The elastic component 15 can provide elastic force to make the movable end face tooth 14 move axially.

[0065] The direct magnetic monostable electromagnetic mechanism 200 is sleeved on the outside of the movable push plate 11. The fixed yoke assembly 102 is fixedly connected to the external support structure such as the reducer housing by bolts. The armature plate assembly 201 is connected to the movable push plate 11 and other movable parts through the deep groove ball bearing 12, which can move axially.

[0066] When the clutch coil 7 is energized with an engagement current, the armature plate assembly 201 is acted upon by an electromagnetic force, overcoming the elastic force of the elastic component 15 and moving axially toward the iron core 5, thereby pushing the deep groove ball bearing 12, the movable push plate 11, and the movable end face gear 14 to move axially, causing the end face gear structure 305 on the movable end face gear 14 to mesh with the fixed end face gear structure 306. At this point, power is transmitted to the output shaft via the secondary gear 13, the movable end face gear 14, and the movable end face gear cover 9.

[0067] When the clutch coil 7 is de-energized, the armature plate assembly 201 loses its electromagnetic force, and the movable component moves axially away from the iron core 5 under the elastic force of the elastic component 15. At this time, the elastic component 15 pushes the movable end face gear 14, the movable push plate 11, the deep groove ball bearing 12 and the movable plate assembly 101 to move axially, so that the end face gear structure 302 on the movable end face gear 14 is separated from the fixed end face gear structure 301. At this time, the power transmission path is cut off, and the output shaft is no longer connected to the motor.

[0068] The direct-magnetic monostable electromagnetic mechanism 200 comprises an armature disc assembly 201 and a fixed yoke assembly 102. The armature disc assembly 201 comprises a sensor magnet 1, an armature disc 20, bolts 21, and a bearing seat 22. The bearing seat 22 is made of a lighter material and is fixed to the armature disc by bolts 21, which can reduce weight and processing costs. The fixed yoke assembly 102 comprises an iron core 5, a coil skeleton 6, an electromagnetic coil 7, and a fixed yoke 8. The armature disc 20, two iron cores 5, and the fixed yoke 8 form an electromagnetic circuit, enabling the electromagnetic coil 7 to generate sufficient electromagnetic force when energized. The sensor magnet 1 and the position sensor 19 can output a position signal of the armature disc assembly 201, enabling the control circuit and control software to obtain the working status of the electromagnetic mechanism in real time.

[0069] The working principle of the direct magnetic monostable electromagnetic mechanism 200 in this embodiment is as follows:

[0070] When the electromagnetic mechanism 200 is in the separated state and the electromagnetic coil 7 is in the non-energized state, the electromagnetic coil 7 does not generate electromagnetic force, and the elastic force of the elastic component 15 puts the armature plate assembly 201 in a natural separated position, that is, a large air gap is maintained between the armature plate assembly 201 and the iron core 5.

[0071] When the electromagnetic coil 7 is energized with an engagement current, the electromagnetic coil 7 generates an electromagnetic force on the armature disc assembly 201, causing the engagement force between the armature disc assembly 201, the electromagnetic coil 7 and the iron core 5 to increase to a level greater than the elastic force of the elastic component 15, thereby causing the armature disc assembly 201 to move axially toward the iron core 5. The movement stops when the end face of the movable end face tooth 14 contacts the end face of the secondary large gear. At this time, the armature disc assembly 201 and the iron core 5 are in an engagement position, that is, a small air gap is formed between the armature disc assembly 201 and the iron core 5. When the engagement action is completed, a certain current is maintained, and the magnetic force generated by the armature disc assembly 201, the electromagnetic coil 7 and the iron core 5 is greater than the elastic force generated by the elastic component 15, and the armature disc assembly 201 will remain in an engaged state.

[0072] When the current is disconnected, the magnetic force generated by the armature disc assembly 201, the electromagnetic coil 7, and the iron core 5 disappears, and the elastic force generated by the elastic component 15 causes the armature disc assembly 201 to move axially away from the iron core 5. When the limiting boss 307 on the armature disc assembly 201 contacts the limiting surface on the external shell, the movement stops, and there is a large air gap between the armature disc assembly 201 and the iron core 5.

[0073] In one embodiment of the present application, a deep groove ball bearing 12 is provided on the movable push plate 11, and an elastic component 15 is also provided between the movable end face tooth 14 and the secondary large gear 13; when the electromagnetic coil 7 is energized with an engagement current, the movable disk assembly 101 is acted upon by the electromagnetic force, overcomes the elastic force of the elastic component 15, and moves axially toward the iron core 5, pushing the deep groove ball bearing 12, the movable push plate 11 and the movable end face tooth 14 to move axially, so that the second end face tooth structure 302 on the movable end face tooth 14 is engaged with the first end face tooth structure 301 on the fixed end face tooth 18; at this time, power is transmitted to the output shaft through the secondary large gear 13, the movable end face tooth cover 9, the movable end face tooth 14, and the fixed end face tooth 18.

[0074] The movable push plate 11 is provided with a deep groove ball bearing 12, the outer ring of which cooperates with the bearing seat 22 of the monostable electromagnetic mechanism 200, so that the movable push plate 11 and the movable plate 2 can rotate relative to each other;

[0075] An elastic component 15 is provided between the movable end face tooth 14 and the secondary large gear 13. The elastic component can be a common coil spring, a wave spring, etc. The elastic component 15 can provide elastic force to make the movable end face tooth 14 move axially.

[0076] The direct magnetic monostable electromagnetic mechanism 200 is sleeved on the outside of the movable push plate 11. The fixed yoke assembly 102 is fixedly connected to the external support structure such as the reducer housing by bolts. The armature plate assembly 201 is connected to the movable push plate 11 and other movable parts through the deep groove ball bearing 12, which can move axially.

[0077] When the clutch coil 7 is energized with an engagement current, the armature plate assembly 201 is acted upon by an electromagnetic force, overcoming the elastic force of the elastic component 15 and moving axially toward the iron core 5, thereby pushing the deep groove ball bearing 12, the movable push plate 11, and the movable end face gear 14 to move axially, causing the end face gear structure 305 on the movable end face gear 14 to mesh with the fixed end face gear structure 306. At this point, power is transmitted to the output shaft via the secondary gear 13, the movable end face gear 14, and the movable end face gear cover 9.

[0078] When the clutch coil 7 is de-energized, the armature plate assembly 201 loses its electromagnetic force, and the movable component moves axially away from the iron core 5 under the elastic force of the elastic component 15. At this time, the elastic component 15 pushes the movable end face gear 14, the movable push plate 11, the deep groove ball bearing 12 and the movable plate assembly 101 to move axially, so that the end face gear structure 302 on the movable end face gear 14 is separated from the fixed end face gear structure 301. At this time, the power transmission path is cut off, and the output shaft is no longer connected to the motor.

[0079] The direct magnetic monostable electromagnetic mechanism 200 is composed of an armature disk assembly 201 and a fixed yoke assembly 102. The armature disk assembly 201 is composed of a sensor magnet 1, an armature disk 20, a bolt 21, and a bearing seat 22. The bearing seat 22 is made of lighter material and is fixed to the armature disk by bolts 21, which can reduce weight and reduce processing costs. The fixed yoke assembly 102 is composed of an iron core 5, a coil frame 6, an electromagnetic coil 7, and a fixed yoke 8. The armature disk 20, two iron cores 5, and the fixed yoke 8 form an electromagnetic circuit, so that the electromagnetic coil 7 can generate sufficient electromagnetic force when energized. The sensor magnet 1 and the position sensor 19 can output the position signal of the armature disk assembly 201, so that the control circuit and control software can obtain the working status of the electromagnetic mechanism in real time.

[0080] In one embodiment of the present application, when a separation current is passed through the electromagnetic coil 7, the movable disk assembly 101 is acted upon by the electromagnetic force, and at the same time, under the elastic force of the elastic component 15, it moves axially in a direction away from the iron core 5. The electromagnetic force and the elastic component 15 push the movable end face teeth 14, the movable push plate 11, the deep groove ball bearing 12 and the movable disk assembly 101 to move axially, so that the second end face tooth structure 302 on the movable end face tooth 14 is disengaged from the first end face tooth structure 301 on the fixed end face tooth 18; at this time, the power transmission path is cut off, and the output shaft has no power connection with the motor.

[0081] When the clutch coil 7 is energized with an engagement current, the movable disc assembly 101 is acted upon by the electromagnetic force, overcomes the elastic force of the elastic component 15, and moves axially toward the iron core 5, pushing the deep groove ball bearing 12, the movable push plate 11, and the movable end face teeth 14 to move axially, so that the end face tooth structure 302 on the movable end face teeth 14 engages with the end face tooth structure 301 on the fixed end face teeth 18. At this time, the power is transmitted to the output shaft through the secondary large gear 13, the movable end face tooth cover 9, the movable end face teeth 14, and the fixed end face teeth 18.

[0082] In one embodiment of the present application, the electromagnetic mechanism includes a bistable direct magnetic electromagnetic mechanism or a monostable direct magnetic electromagnetic mechanism.

[0083] The direct magnetic electromagnetic mechanism can use a bistable direct magnetic electromagnetic mechanism or a monostable direct magnetic electromagnetic mechanism; the bistable direct magnetic electromagnetic mechanism has a magnet, and when the power is off, it can maintain the engaged state through magnetic force or maintain the separated state through the elastic force of the elastic component; the monostable direct magnetic electromagnetic mechanism does not have a magnet structure, and when the power is off, it can maintain the separated state through the elastic force of the elastic component, or realize the function of automatic separation after power off through the elastic force of the elastic component.

[0084] Optionally, the electromagnetic mechanism structure includes a fixed magnetic yoke, an electromagnetic coil, a coil frame, an iron core, an armature disc, and a bearing seat.

[0085] Optionally, the electromagnetic mechanism structure includes a fixed magnetic yoke, an electromagnetic coil, a coil skeleton, an iron core, a movable disk, a magnetic steel, and a conductive magnetic disk.

[0086] In one embodiment of the present application, when the fixed end face teeth 18 are arranged on the secondary large gear 13 as an integrated structure, the movable end face tooth cover 9 and the movable end face teeth 14 are in a free rotation state, the movable end face tooth cover 9 is connected to the output shaft through a spline, and power is transmitted to the output shaft through the movable end face tooth cover 9; the movable end face tooth cover 9 is mutually supported by the secondary large gear 13 through a supporting structure and can rotate relative to each other; the movable end face tooth cover 9 is provided with an internal spline, and the movable end face teeth 14 are provided with an external spline, and the movable end face tooth cover 9 and the movable end face teeth 14 are connected by a spline, so that the movable end face teeth 14 and the movable end face tooth cover 9 can rotate synchronously with relative axial movement.

[0087] When the fixed end face teeth are arranged on the secondary large gear as an integrated structure, the movable end face tooth cover and the movable end face teeth are in a free rotation state, the movable end face tooth cover and the output shaft are connected by a spline, and power is transmitted to the output shaft through the movable end face tooth cover; the movable end face tooth cover is mutually supported by the secondary large gear through supporting structures such as bearings or sliding sleeves, and can rotate relative to each other; the movable end face tooth cover is provided with an internal spline, and the movable end face teeth are provided with an external spline, and the movable end face teeth and the movable end face tooth cover are connected by splines, so that the movable end face teeth and the movable end face tooth cover can move axially relative to each other and rotate synchronously.

[0088] In one embodiment of the present application, when the fixed end face tooth 18 serves as an independent structure, the fixed end face tooth 18 is in a free rotation state and is connected to the output shaft through a spline, and power is transmitted to the output shaft through the fixed end face tooth 18; the movable end face tooth cover 9 is fixedly connected to the secondary large gear 13 through an interference connection or a bolt connection, and rotates synchronously with the secondary large gear 13; a spline structure is provided on the movable end face tooth 14, and the movable end face tooth 14 rotates synchronously with the movable end face tooth cover 9 through the spline.

[0089] When the fixed end face teeth are used as an independent structure, the fixed end face teeth are in a free rotation state and are connected to the output shaft through a spline, and power is transmitted to the output shaft through the fixed end face teeth; the movable end face tooth cover is fixedly connected to the secondary large gear through an interference connection or a bolt connection, and rotates synchronously with the secondary large gear; a spline structure is provided on the movable end face teeth, and the movable end face teeth rotate synchronously with the movable end face tooth cover through the spline.

[0090] In one embodiment of the present application, an elastic component 15 is provided between the movable end face tooth 14 and the secondary large gear 13, and a protruding connecting structure 303 is provided on the movable end face tooth 14. The protruding connecting structure 303 passes through the waist-shaped through hole on the movable end face tooth cover 9 to make axial contact or connection with the movable push plate 11. Under the action of the electromagnetic force of the electromagnetic mechanism and the elastic force of the elastic component 15, the movable end face tooth 14 can move axially and engage and disengage with the fixed end face tooth 18.

[0091] An elastic component is provided between the movable end face tooth and the secondary large gear, and a protruding connecting structure is provided on the movable end face tooth. The protruding connecting structure passes through the waist-shaped through hole on the movable end face tooth cover to make axial contact or connection with the movable push plate. Under the action of the electromagnetic force of the electromagnetic mechanism and the elastic force of the elastic component, the movable end face tooth can move axially and engage and disengage with the fixed end face tooth.

[0092] An electric drive system is also provided in an embodiment of the present application, in which the electromagnetic split clutch system is adopted. The electric drive system includes a reducer assembly 400, a left motor assembly 401, a right motor assembly 402, a controller assembly 410, and a junction box assembly 411. The reducer assembly 400 includes a left reducer housing assembly 402, a left transmission shaft system 403, an intermediate reducer housing assembly 405, a right transmission shaft system 407, and a right reducer housing assembly 408.

[0093] like Figure 8 As shown, the reducer assembly 400 is composed of a left reducer housing assembly 402, a left transmission shaft system 403, an intermediate reducer housing assembly 405, a right transmission shaft system 407, and a right reducer housing assembly 408; the reducer assembly 400, the left motor assembly 401, the right motor assembly 402, the controller assembly 410, and the junction box assembly 411 are combined into a back-to-back electric drive system;

[0094] In one embodiment of the present application, under normal working conditions, the left motor assembly 401 and the right motor assembly 402 independently provide power, which is transmitted to the left and right output shafts by the left transmission shaft system 403 and the right transmission shaft system 407 in the reducer assembly 400.

[0095] like Figure 8 As shown, under normal working conditions, the left motor assembly 401 and the right motor assembly 402 provide power independently, which is transmitted to the left and right output shafts by the left transmission shaft system 403 and the right transmission shaft system 407 in the reducer assembly 400; under the control of the software strategy, the left and right output shafts can achieve different speeds, and there is no need for a differential structure to achieve the differential behavior of the left and right output shafts; correspondingly, the split clutch system described in this patent can be applied to the scenario of this power output mode.

[0096] In one embodiment of the present application, the left-side split clutch system 404 is arranged in the left-side transmission shaft system 403, and the right-side split clutch system 406 is arranged in the right-side transmission shaft system 407; when it is necessary to cut off the power connection between the motor and the output shaft, the electromagnetic mechanism performs a splitting action to separate the end face tooth structure to complete the power blocking; when the motor is required to provide more power, the electromagnetic mechanism performs an engaging action to engage the end face tooth structure to complete the power link connection.

[0097] like Figure 8As shown, the left-side split clutch system 404 is arranged in the left-side transmission shaft system 403, and the right-side split clutch system 406 is arranged in the right-side transmission shaft system 407; when it is necessary to cut off the power connection between the motor and the output shaft, the electromagnetic mechanism performs a splitting action to separate the end face tooth structure and complete the power blocking to improve the energy output efficiency of the entire vehicle system; when the motor is needed to provide more power, the electromagnetic mechanism performs an engaging action to engage the end face tooth structure and complete the power link connection to improve the power output.

[0098] The foregoing is merely an embodiment of the present application and is not intended to limit the present application. For those skilled in the art, the present application may have various changes and variations. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present application should all be included within the scope of the claims of the present application.

Claims

1. An electromagnetic split clutch system, wherein: The system includes: a cutting mechanism and an electromagnetic mechanism, wherein the cutting mechanism is used to cut off or connect the power of the reducer, and the electromagnetic mechanism is connected to the cutting mechanism. The cutting mechanism comprises: a movable end face tooth cover (9), a movable end face tooth (14), a secondary large gear (13), a fixed end face tooth (18) and a movable push plate (11); the movable end face tooth cover (9) is connected to the secondary large gear (13); the movable end face tooth (14) is arranged on the inner side of the movable end face tooth cover (9); and the fixed end face tooth (18) is arranged between the movable end face tooth (14) and the secondary large gear (13); The electromagnetic mechanism is sleeved on the outer side of the movable push plate (11).

2. The system of claim 1, wherein: The cutting mechanism is connected to the external housing or frame structure via a supporting bearing (10). The movable end face tooth cover (9) is used to transmit power to the movable end face teeth (14) and enable the movable end face teeth (14) to move axially relative to the movable end face tooth cover (9) while rotating synchronously with the movable end face tooth cover (9); The fixed end face teeth (18) are used to be connected to the output shaft, so that the fixed end face teeth (18) can transmit power to the output shaft.

3. The system of claim 2, wherein: A protruding connection structure (303) is provided on the movable end face teeth (14), and the protruding connection structure (303) contacts the movable push plate (11) and can drive the movable push plate (11) to rotate.

4. The system of claim 1, wherein: The electromagnetic mechanism comprises: a fixed magnetic yoke assembly (102) and a movable disk assembly (101), wherein the movable disk assembly (101) comprises a sensor magnet (1), a movable disk (2), a conductive magnetic disk (3) and a magnetic steel (4), and the fixed magnetic yoke assembly (102) comprises an iron core (5), a coil skeleton (6), an electromagnetic coil (7) and a fixed magnetic yoke (8). The conductive magnetic disk (3), the magnetic steel (4), the iron core (5), and the fixed magnetic yoke (8) together form an electromagnetic circuit, so that the electromagnetic coil (7) generates electromagnetic force when energized.

5. The system of claim 4, wherein: A deep groove ball bearing (12) is provided on the movable push plate (11), and an elastic component (15) is further provided between the movable end face gear (14) and the secondary large gear (13); When the electromagnetic coil (7) is energized with an engagement current, the movable disk assembly (101) is acted upon by an electromagnetic force, overcomes the elastic force of the elastic component (15), and moves axially toward the iron core (5), pushing the deep groove ball bearing (12), the movable push disk (11), and the movable end face teeth (14) to move axially, causing the second end face tooth structure (302) on the movable end face teeth (14) to mesh with the first end face tooth structure (301) on the fixed end face teeth (18); At this time, the power is transmitted to the output shaft through the secondary large gear (13), the movable end face gear cover (9), the movable end face gear (14), and the fixed end face gear (18).

6. The system of claim 5, wherein: When the electromagnetic coil (7) is energized with a separation current, the movable disk assembly (101) is acted upon by an electromagnetic force and, at the same time, moves axially away from the iron core (5) under the elastic force of the elastic component (15). The electromagnetic force and the elastic component (15) push the movable end face teeth (14), the movable push plate (11), the deep groove ball bearing (12) and the movable disk assembly (101) to move axially, so that the second end face tooth structure (302) on the movable end face teeth (14) is disengaged from the first end face tooth structure (301) on the fixed end face teeth (18); At this time, the power transmission path is cut off and the output shaft has no power connection with the motor.

7. The system of claim 1, wherein: The electromagnetic mechanism includes a bistable direct magnetic electromagnetic mechanism or a monostable direct magnetic electromagnetic mechanism.

8. The system of claim 1, wherein: When the fixed end face teeth (18) are arranged on the secondary large gear (13) as an integrated structure, the movable end face teeth cover (9) and the movable end face teeth (14) are in a free rotation state, the movable end face teeth cover (9) is connected to the output shaft through a spline, and power is transmitted to the output shaft through the movable end face teeth cover (9); The movable end face gear cover (9) is supported by the secondary large gear (13) through a supporting structure and can rotate relative to each other; The movable end face tooth cover (9) is provided with an internal spline, and the movable end face teeth (14) are provided with an external spline. The movable end face tooth cover (9) and the movable end face teeth (14) are connected via splines, so that the movable end face teeth (14) and the movable end face tooth cover (9) can rotate synchronously with relative axial movement.

9. The system of claim 1, wherein: When the fixed end face teeth (18) are used as an independent structure, the fixed end face teeth (18) are in a free rotation state and are connected to the output shaft through a spline, and power is transmitted to the output shaft through the fixed end face teeth (18); The movable end face tooth cover (9) is fixedly connected to the secondary large gear (13) through an interference fit or a bolt connection, and rotates synchronously with the secondary large gear (13); a spline structure is provided on the movable end face tooth (14), and the movable end face tooth (14) rotates synchronously with the movable end face tooth cover (9) through the spline.

10. The system of claim 1, wherein: An elastic component (15) is provided between the movable end face tooth (14) and the secondary large gear (13); a protruding connection structure (303) is provided on the movable end face tooth (14); the protruding connection structure (303) passes through the waist-shaped through hole on the movable end face tooth cover (9) to make axial contact or connection with the movable push plate (11); under the action of the electromagnetic force of the electromagnetic mechanism and the elastic force of the elastic component (15), the movable end face tooth (14) can move axially and engage and disengage with the fixed end face tooth (18).

11. An electric drive system, wherein: The electromagnetic split clutch system according to any one of claims 1 to 10 is used, wherein the electric drive system includes a reducer assembly (400), a left motor assembly (401), a right motor assembly (402), a controller assembly (410), and a junction box assembly (411). The reducer assembly (400) includes a left reducer housing assembly (402), a left transmission shaft system (403), a middle reducer housing assembly (405), a right transmission shaft system (407), and a right reducer housing assembly (408).

12. The system of claim 11, wherein: Under normal working conditions, the left motor assembly (401) and the right motor assembly (402) independently provide power, which is transmitted to the left and right output shafts by the left transmission shaft system (403) and the right transmission shaft system (407) in the reducer assembly (400).

13. The system of claim 11, wherein: The left-side split clutch system (404) is arranged in the left-side transmission shaft system (403), and the right-side split clutch system (406) is arranged in the right-side transmission shaft system (407); When the power connection between the motor and the output shaft needs to be cut off, the electromagnetic mechanism performs a cutting action to separate the end face gear structure to complete the power blocking; When the motor is required to provide more power, the electromagnetic mechanism performs an engagement action, causing the end face gear structure to engage and complete the power link connection.

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