Power coupling device, transmission, powertrain and vehicle

Abstract

A power coupling device (100), a transmission (200), a powertrain (300) and a vehicle. The power coupling device (100) comprises: a first shaft (11); a first engagement mechanism (20), the first engagement mechanism (20) being connected to the first shaft (11); a second engagement mechanism (30); a second shaft (12), the second shaft (12) being connected to the second engagement mechanism (30); and an electromagnetic drive mechanism (40), the electromagnetic drive mechanism (40) being configured to control the first engagement mechanism (20) and the second engagement mechanism (30) to be coupled or disconnected. By means of the electromagnetic drive mechanism (40), the first engagement mechanism (20) and the second engagement mechanism (30) are controlled to be coupled or disconnected, so as to achieve power coupling or disconnection of the first shaft (11) and the second shaft (12), thereby improving the response speed of the power coupling device (100).

Description

Power couplings, transmissions, powertrains and vehicles

[0001] This application claims priority to the Chinese patent application filed with the China Patent Office on October 31, 2023, with application number 202311438715.0 and application name “Power Coupling Device, Transmission, Powertrain and Vehicle”, the entire contents of which are incorporated by reference into this application. Technical Field

[0002] The present disclosure relates to the field of vehicles, and in particular to a power coupling device, a transmission including the power coupling device, a powertrain including the transmission, and a vehicle including the powertrain. Background Art

[0003] In the prior art, in order to improve user experience, a vehicle is usually provided with an engine while being driven by an electric motor, and a power coupling device is used to achieve power coupling and disconnection between the electric motor and the engine.

[0004] However, in the prior art, the power coupling device usually realizes the power coupling between the electric motor and the engine through a hydraulic system, which has the technical problem of slow response speed.

[0005] Summary of the Invention

[0006] In view of the above-mentioned shortcomings of the prior art, the present disclosure aims to provide a power coupling device with improved response speed, a transmission including the power coupling device, a powertrain including the transmission, and a vehicle including the powertrain. Specifically, the present disclosure includes the following technical solutions:

[0007] In a first aspect, the present disclosure provides a power coupling device, comprising: a first shaft; a first coupling mechanism connected to the first shaft; a second shaft; a second coupling mechanism connected to the second shaft; and an electromagnetic drive mechanism, the electromagnetic drive mechanism being configured to control the coupling or disconnection of the first coupling mechanism and the second coupling mechanism.

[0008] The power coupling device disclosed herein is provided with an electromagnetic drive mechanism, a first coupling mechanism connected to the first shaft, and a second coupling mechanism connected to the second shaft, so that the power coupling device disclosed herein controls the coupling or disconnection of the first coupling mechanism and the second coupling mechanism through the electromagnetic drive mechanism to achieve power coupling or disconnection of the first shaft and the second shaft, thereby improving the response speed of the power coupling device disclosed herein.

[0009] In one embodiment, the first coupling mechanism includes: at least one first connecting part; the second coupling mechanism includes: a second connecting part matching the first connecting part, and the second connecting part is arranged above the first connecting part along the first direction; the electromagnetic drive mechanism includes: a movable part corresponding to the second connecting part, and the movable part is configured to: control the coupling of the second connecting part and the first connecting part.

[0010] In one embodiment, the second coupling mechanism further includes an elastic member connected to the second connecting portion; the elastic member is configured to control the second connecting portion to be disconnected from the first connecting portion.

[0011] In one embodiment, the second connecting portion includes a guiding portion, the guiding portion matches the movable portion, and the guiding portion and the movable portion are configured to control the coupling of the second connecting portion and the first connecting portion.

[0012] In one embodiment, the guide portion includes a first surface and a second surface connected to each other, and the angle between the second surface and the first surface is an obtuse angle.

[0013] In one embodiment, the movable portion includes a guide surface, which is provided at an end portion of the movable portion and is an inclined surface.

[0014] In one embodiment, the first connecting portion includes: a groove arranged toward the second connecting portion; the second connecting portion includes: a protrusion arranged toward the first connecting portion; the movable portion controls the protrusion to extend into the groove to achieve coupling between the first connecting portion and the second connecting portion.

[0015] In one embodiment, a limiting protrusion is provided on the side of the groove; a limiting groove is provided on the side of the protrusion close to the limiting protrusion; when the movable part controls the protrusion to extend into the groove, the limiting protrusion is embedded in the limiting groove to improve the coupling stability of the first connecting part and the second connecting part.

[0016] In one embodiment, the electromagnetic drive mechanism further includes: an electromagnetic drive element; a magnetic element; a mounting plate, the magnetic element is connected to the mounting plate, and a movable part is provided on the mounting plate; when the electromagnetic drive element is energized, the magnetic element is adsorbed by the electromagnetic drive element to drive the movable part of the mounting plate, so that the first connecting part and the second connecting part are disconnected.

[0017] In one embodiment, the electromagnetic driving element is annular and sleeved on the outer edge of the first shaft.

[0018] In one embodiment, the electromagnetic drive mechanism also includes: a push plate assembly, which is connected between the mounting plate and the magnetic element; a second elastic member, which is connected between the electromagnetic drive element and the push plate assembly; when the electromagnetic drive element is energized, the magnetic element is adsorbed by the electromagnetic drive element to drive the movable part of the mounting plate, so that the first connection part and the second connection part are disconnected, and the second elastic member is compressed; when the electromagnetic drive element is de-energized, the second elastic member expands to drive the movable part of the mounting plate through the push plate assembly, so that the first connection part and the second connection part are coupled.

[0019] In one embodiment, the push plate assembly includes: a first push plate connected to the mounting plate; a second push plate connected to the magnetic element; a bearing connected between the first push plate and the second push plate; the bearing is configured to: transmit the axial force released by the electromagnetic drive element or the second elastic member when the electromagnetic drive element is powered on or off.

[0020] In one embodiment, the power coupling device further includes: a support bearing, which is sleeved on the outer edge of the first shaft and at least partially accommodated in the electromagnetic drive element, for supporting the electromagnetic drive element.

[0021] In one embodiment, the power coupling device further includes: a thrust bearing connected between the first engagement mechanism and the second engagement mechanism to transmit an axial load between the first engagement mechanism and the second engagement mechanism.

[0022] In a second aspect, the present disclosure provides a transmission comprising a power coupling device.

[0023] In one embodiment, the transmission includes a housing with a power coupling device housed within the housing.

[0024] In a third aspect, the present disclosure provides a power assembly including a first power device, a second power device, and a transmission, wherein the first power device is connected to the second end of the transmission, and the second power device is connected to the first end of the transmission.

[0025] In one embodiment, a third power device is included, and the third power device is connected to the first end of the transmission.

[0026] In a fourth aspect, the present disclosure provides a vehicle including a powertrain.

[0027] It can be understood that the transmission, powertrain and vehicle provided in the second to fourth aspects of the present disclosure all have the effect of improving the response speed due to the use of the power coupling device provided in the first aspect of the present disclosure. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] FIG1 is a schematic structural diagram of a powertrain provided in one embodiment of the present disclosure;

[0029] FIG2 is another schematic structural diagram of a powertrain provided in an embodiment of the present disclosure;

[0030] FIG3 is a schematic structural diagram of a power coupling device provided in one embodiment of the present disclosure;

[0031] FIG4 is a cross-sectional schematic diagram of a power coupling device provided in one embodiment of the present disclosure;

[0032] FIG5 is an exploded schematic diagram of a power coupling device provided in one embodiment of the present disclosure;

[0033] FIG6 is a schematic diagram of a partial structure of a power coupling device provided in one embodiment of the present disclosure;

[0034] FIG7 is a schematic diagram of a partial structure of a power coupling device provided in an embodiment of the present disclosure in a disconnected state;

[0035] FIG8 is another partial structural schematic diagram of a power coupling device provided in an embodiment of the present disclosure in a disconnected state;

[0036] FIG9 is a schematic diagram of a partial structure of a power coupling device in a coupled state provided in one embodiment of the present disclosure;

[0037] FIG10 is another partial structural schematic diagram of a power coupling device in a coupled state provided in one embodiment of the present disclosure;

[0038] FIG11 is another partial structural schematic diagram of a power coupling device provided in an embodiment of the present disclosure in a disconnected state;

[0039] FIG12 is another partial structural schematic diagram of a power coupling device provided in an embodiment of the present disclosure in a coupled state;

[0040] FIG13 is a partial view of a power coupling device provided in one embodiment of the present disclosure. DETAILED DESCRIPTION

[0041] To facilitate understanding of the present disclosure, a more comprehensive description of the present disclosure will be provided below with reference to the accompanying drawings. The accompanying drawings illustrate preferred embodiments of the present disclosure. However, the present disclosure can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to provide a more thorough and comprehensive understanding of the disclosure.

[0042] The following descriptions of the embodiments are with reference to the attached diagrams to illustrate specific embodiments that the present disclosure can be used to implement. The serial numbers assigned to the components herein, such as "first", "second", etc., are only used to distinguish the objects described and do not have any order or technical meaning. The "connection" and "coupling" mentioned in the present disclosure include direct and indirect connections (couplings) unless otherwise specified. The directional terms mentioned in the present disclosure, such as "up", "down", "front", "back", "left", "right", "inside", "outside", "side", etc., are only with reference to the directions of the attached drawings. Therefore, the directional terms used are for better and clearer explanation and understanding of the present disclosure, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present disclosure.

[0043] In the description of this disclosure, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections; they can refer to direct connections, indirect connections through an intermediate medium, or internal connections between two components. A person of ordinary skill in the art will understand the specific meanings of the above terms in this disclosure based on the specific circumstances. It should be noted that the terms "first," "second," and so on, in the specification, claims, and accompanying drawings of this disclosure are used to distinguish between different objects, not to describe a specific order. Furthermore, the terms "include," "may include," "comprise," or "may include" used in this disclosure indicate the presence of the corresponding functions, operations, components, etc. disclosed, and do not limit the presence or absence of one or more additional functions, operations, components, etc. Furthermore, the terms "include" or "comprising" indicate the presence of the corresponding features, numbers, steps, operations, elements, components, or combinations thereof disclosed in the specification, and do not exclude the presence or addition of one or more other features, numbers, steps, operations, elements, components, or combinations thereof, and are intended to cover non-exclusive inclusions.

[0044] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art in the art of the present disclosure. The terms used herein in the specification of the present disclosure are only for the purpose of describing specific embodiments and are not intended to limit the present disclosure.

[0045] The present disclosure provides a vehicle comprising wheels and a powertrain, wherein the wheels are connected to a power output end of the powertrain, and power within the powertrain is output to the wheels via the power output end, thereby controlling the rotation of the wheels and realizing the operation of the vehicle of the present disclosure.

[0046] Please refer to FIG1 , which is a schematic structural diagram of a powertrain 300 provided in one embodiment of the present disclosure.

[0047] As shown in Figure 1, the powertrain 300 of the present disclosure includes a first power unit 301, a second power unit 302, and a transmission 200. The first power unit 301 is connected to the second end of the transmission 200. It is understood that the power output by the first power unit 301 can be directly transmitted to the transmission 200 and then output externally after being acted upon by the transmission 200, thereby achieving the power output function of the powertrain 300 of the present disclosure.

[0048] As shown in Figure 1, the transmission 200 includes a power coupling device 100 housed in a housing (not shown in the figure), wherein a first shaft (not shown in the figure) of the power coupling device 100 serves as a first end of the transmission 200, and a second shaft (not shown in the figure) of the power coupling device 100 is connected to the remaining structure of the transmission 200.

[0049] The second power unit 302 is connected to a first shaft (not shown) of the power coupling device 100 of the transmission 200. The power coupling device 100 can couple and disconnect the second power unit 302 with the remaining components of the transmission 200, thereby switching the operating state of the powertrain 300 of the present disclosure.

[0050] When the power coupling device 100 is disconnected, the power input to the transmission 200 is provided solely by the first power device 301. When the power coupling device 100 is coupled, the power of the second power device 302 can be output to the first end of the transmission 200 and, in combination with the power of the first power device 301, boost the power input to the transmission 200, thereby boosting the power output from the transmission 200. This further expands the application scenarios of the powertrain 300 disclosed herein.

[0051] It is understood that in this embodiment, the first power device 301 can be configured as an electric motor, and the second power device 302 can be configured as an engine. In another embodiment, the first power device 301 can also be configured as an engine, and the second power device 302 can be configured as an electric motor. In other embodiments, the first power device 301 and the second power device 302 can also be configured as other power mechanisms, which are not particularly limited in this disclosure.

[0052] For ease of description, in the subsequent embodiments, the first power device 301 is configured as an electric motor, and the second power device 302 is configured as an engine.

[0053] Please refer to FIG. 2 , which shows another structural diagram of a powertrain 300 provided in an embodiment of the present disclosure.

[0054] As shown in FIG. 2 , the powertrain 300 of the present disclosure further includes a third power device 303 , wherein the third power device 303 is connected between the second shaft (not shown) of the power coupling device 100 and the remaining structure of the transmission 200 .

[0055] When the power coupling device 100 is disconnected, the power of the third power device 303 can be output to the transmission 200 and cooperate with the power of the first power device 301 to drive the transmission 200 to rotate. When the power coupling device 100 is coupled, the third power device 303 stops outputting power, and the second power device 302 cooperates with the first power device 301 to drive the transmission 200 to rotate.

[0056] It is understood that in this embodiment, the third power device 303 can be configured as a generator. When the power coupling device 100 is coupled, the power output by the second power device 302 can also be transmitted to the third power device 303 and converted into electrical energy by the third power device 303 and stored in a battery (not shown).

[0057] In one embodiment, as shown in Figure 2 , the disclosed transmission 200 further includes a clutch 201, which is connected between the second shaft (not shown) of the power coupling device 100 and the remaining components of the transmission 200. When the clutch 201 is disengaged, the power of the second power unit 302 and the third power unit 303 cannot be output to the output port of the transmission 200 through the transmission 200, resulting in the power of the disclosed powertrain 300 being provided solely by the first power unit 301. In this case, the vehicle utilizing the disclosed powertrain 300 is electrically driven.

[0058] The powertrain 300 also includes a vehicle control system 304. During vehicle operation, the vehicle control system 304 controls the coupling or disconnection of the power coupling device 100 and the clutch 201 of the transmission 200 based on the battery power, the degree of accelerator pedal engagement, and the vehicle speed, thereby realizing the power drive of the powertrain 300 disclosed in the present invention under different conditions.

[0059] Specifically, when the power coupling device 100 is coupled and the clutch 201 is disengaged, the power of the first power unit 301 is released outward through the transmission 200. The power of the second power unit 302 is transmitted to the third power unit 303 via the power coupling device 100, causing the third power unit 303 to generate electricity. The electrical energy generated by the third power unit 303 can be transmitted to the battery to charge the battery and increase the battery's electrical energy. In this case, the vehicle using the powertrain 300 of the present disclosure is electrically driven.

[0060] When the power coupling device 100 is disconnected and the clutch 201 is engaged, the power of the third power device 303 is transmitted to the second end of the transmission 200 via the clutch 201, and together with the power output of the first power device 301, the transmission 200 is driven to output power. In this case, the vehicle using the powertrain 300 of the present disclosure is electrically driven with the assistance of the generator.

[0061] When the power coupling device 100 is coupled and the clutch 201 is also coupled, the power output by the second power device 302 is transmitted to the third power device 303. The power is also transmitted to the second end of the transmission 200 via the power coupling device 100 and the clutch 201, and cooperates with the first power device 301 to drive the transmission 200 to output power. In this case, the vehicle using the powertrain 300 of the present disclosure adopts another electric drive system with engine assist.

[0062] It is understood that in another embodiment, the clutch 201 can also be configured as the power coupling device 100. In other embodiments, the clutch 201 can also be configured as other clutches. This disclosure does not specifically limit this.

[0063] Please refer to FIG3 for a schematic structural diagram of a power coupling device 100 provided in one embodiment of the present disclosure, please refer to FIG4 for a schematic cross-sectional diagram of a power coupling device provided in one embodiment of the present disclosure, and please refer to FIG5 for a schematic exploded diagram of a power coupling device 100 provided in one embodiment of the present disclosure.

[0064] As shown in Figures 3 to 5, the power coupling device 100 of the present disclosure includes a first shaft 11, a second shaft 12, a first coupling mechanism 20, a second coupling mechanism 30, and an electromagnetic drive mechanism 40. The first axis L1 of the first shaft 11 and the second axis L2 of the second shaft 12 coincide with each other, and the first shaft 11 and the second shaft 12 are rotationally connected.

[0065] For ease of description, the power coupling device 100 of the present disclosure sets the axial direction of the first shaft 11 as the first direction 001 , and sets the radial direction of the first shaft 11 as the second direction 002 .

[0066] As shown in Figures 3-5 , the first coupling mechanism 20 includes a first connecting portion 21. The first connecting portion 21 is annular, through which the first shaft 11 passes and is secured. Furthermore, the geometric axis of the first connecting portion 21 coincides with the first axis L1. As will be appreciated, the first connecting portion 21 rotates synchronously with the first shaft 11.

[0067] The second coupling mechanism 30 includes a second connecting portion 31, an elastic member 32, and a mounting plate 33. The second shaft 12 extends into and is fixedly connected to the mounting plate 33. A protrusion 331 is formed on the outer edge of the mounting plate 33. The protrusion 331 extends in the first direction 001 toward the first connecting portion 21 to form a receiving space, which at least partially receives the first connecting portion 21.

[0068] Along the second direction 002, one end of the second connection portion 31 is connected to the protrusion 331 via an elastic member 32, and the other end extends toward the first connection portion 21. The elastic member 32 is a pre-tensioned elastic member. The first and second connection portions 21 and 31 are matched to each other, enabling the second connection portion 31 to move toward or away from the first connection portion 21 under external force, thereby coupling or disconnecting the second connection portion 31 with the first connection portion 21, thereby coupling or disconnecting the first and second connection mechanisms 20 and 30.

[0069] It can be understood that when the first connecting part 21 and the second connecting part 31 are coupled, the torque driving the first shaft 11 to rotate can be transmitted to the second connecting mechanism 30 through the first coupling mechanism 20, and then transmitted to the second shaft 12, so that the second shaft 12 rotates synchronously with the first shaft 11, thereby realizing the motion coupling of the first shaft 11 and the second shaft 12.

[0070] When the first connection portion 21 and the second connection portion 31 are disconnected, the torque driving the first shaft 11 to rotate cannot be transmitted to the second connection mechanism 30 after being transmitted to the first connection mechanism 20 , thereby disconnecting the movement of the first shaft 11 and the second shaft 12 .

[0071] Along the first direction 001, the electromagnetic drive mechanism 40 surrounds the outer edge of the first shaft 11 and is located on a side of the first engagement mechanism 20 away from the second engagement mechanism 30. The electromagnetic drive mechanism 40 includes a movable portion 431 that mates with the second connection portion 31. The movable portion 431 is disposed at one end of the electromagnetic drive mechanism 40 that faces the first engagement mechanism 20 and contacts the second connection portion 31.

[0072] When the electromagnetic drive mechanism 40 is energized, the electromagnetic force within the electromagnetic drive mechanism 40 drives the movable portion 431 to extend in the first direction 001. This in turn causes the second connecting portion 31 to move toward the first connecting portion 21 until the second connecting portion 31 couples with the first connecting portion 21, thereby achieving the power coupling function of the power coupling device 100 of the present disclosure.

[0073] When the electromagnetic drive mechanism 40 is powered off, the electromagnetic force inside the electromagnetic drive mechanism 40 disappears, and the movable part 431 retracts along the first direction 001 under the action of the internal structure of the electromagnetic drive mechanism 40. An elastic member 32 is provided between the second connecting part 31 and the protrusion 331. It can be understood that during the movement of the second connecting part 31 toward the first connecting part 21, the elastic member 32 will be stretched and store elastic force. When the movable part 431 retracts, the second connecting part 31 will move in a direction away from the first connecting part 21 under the action of the elastic force of the elastic member 32 until the second connecting part 31 is disconnected from the first connecting part 21. Thereby, the power disconnection function of the power coupling device 100 disclosed in the present invention is realized.

[0074] Therefore, compared with the prior art that uses a hydraulic system to control the coupling and disconnection of the power coupling device, the power coupling device 100 of the present disclosure provides an electromagnetic drive mechanism 40, and utilizes the movable portion 431 of the electromagnetic drive mechanism 40 to achieve displacement drive of the second connecting portion 31, thereby shortening the operation time required for coupling of the power coupling device 100 and improving the response speed of the power coupling device 100 of the present disclosure.

[0075] Specifically, please refer to FIG6 , which shows a schematic diagram of a partial structure of a power coupling device 100 provided in an embodiment of the present disclosure; FIG7 , which shows a schematic diagram of a partial structure of a power coupling device 100 provided in an embodiment of the present disclosure in a disconnected state; and FIG8 , which shows another schematic diagram of a partial structure of a power coupling device 100 provided in an embodiment of the present disclosure in a disconnected state. This is in conjunction with FIG4 .

[0076] As shown in Figures 4, 6, 7, and 8, the second connection portion 31 is provided with a guide portion 311, which is configured to mate with the movable portion 431. The guide portion 311 is located on the side of the second connection portion 31 away from the first connection portion 21. The guide portion 311 includes a first surface 3111 and a second surface 3112 connected to each other. The first surface 3111 is the end surface of the second connection portion 31 away from the first connection portion 21, and the angle between the second surface 3112 and the first surface 3111 is an obtuse angle.

[0077] As shown in Figures 4, 6, 7, and 8, the movable portion 431 includes a guide surface 4311 disposed at the end of the movable portion 431 and being an inclined surface. The inclination angle of the inclined surface matches the angle between the second surface 3112 and the first surface 3111.

[0078] As shown in Figures 7 and 8, when the electromagnetic drive mechanism 40 is in the de-energized state, the guide surface 4311 of the movable portion 431 contacts the second surface 3112. When the electromagnetic drive mechanism 40 is energized, the movable portion 431 extends in the first direction 001 and slides along the second surface 3112 toward the first surface 3111, thereby displacing the second connecting portion 31 toward the first connecting portion 21 and stretching the elastic member 32.

[0079] On the other hand, as shown in Figures 9 and 10, when the guide surface 4311 of the movable portion 431 is disengaged from the second surface 3112 and the side surface 4312 of the movable portion 431 is in contact with the first surface 3111, the extension of the movable portion 431 in the first direction 001 does not cause the second connecting portion 31 to move. At this point, the second connecting portion 31 is coupled to the first connecting portion 21, thereby achieving the power coupling function of the power coupling device 100 of the present disclosure.

[0080] As shown in Figures 9 and 10, when the electromagnetic drive mechanism 40 switches from the energized state to the de-energized state, the movable portion 431 retracts in the first direction 001, and the side surface 4312 of the movable portion 431 remains in contact with the first surface 3111. At this time, due to the abutment of the movable portion 431, the second connection portion 31 cannot move away from the first connection portion 21 under the action of the elastic member 32. When the side surface 4312 of the movable portion 431 disengages from the first surface 3111, the abutment effect of the movable portion 431 on the second connection portion 31 disappears, and the elastic member 32 drives the second connection portion 31 to move in a direction away from the first connection portion 21 until the guide surface 4311 abuts against the second surface 3112.

[0081] As shown in Figures 7 and 8, when the movable portion 431 retracts to the preset position, the elastic member 32 drives the second connecting portion 31 and causes the guide surface 4311 to abut against the second surface 3112. At this time, the second connecting portion 31 is disengaged from the first connecting portion 21, thereby achieving the power disconnection function of the power coupling device 100 of the present disclosure.

[0082] It is understood that when the movable portion 431 is retracted to the preset position, the elastic member 32 still causes the guide surface 4311 to abut against the second surface 3112. This can reduce the impact of the movable portion 431 on the guide portion 311 when the electromagnetic drive mechanism 40 is energized, thereby preventing the second connecting portion 31 from being misaligned with the first connecting portion 21 due to the impact. This ensures the power coupling function of the power coupling device 100 of the present disclosure and improves the reliability of the power coupling device 100 of the present disclosure.

[0083] In other embodiments, the power coupling device 100 of the present disclosure may further include only the first surface 3111 and the second surface 3112 with an obtuse angle on the guide portion 311. Alternatively, only the movable portion 431 may include an inclined surface. This disclosure does not specifically limit this.

[0084] 11 and 12 , the guide portion 311 is located on the side of the second connection portion 31 facing the first connection portion 21, and the first surface 3111 is the end surface of the second connection portion 31 facing the first connection portion 21. The elastic member 32 is configured as a pre-compression elastic member.

[0085] As shown in FIG. 11 , when the movable portion 431 retracts along the first direction 001 , the elastic force of the elastic member 32 drives the second connection portion 31 to couple with the first connection portion 21 along the second direction 002 , thereby achieving coupling of the first shaft 11 and the second shaft 12 .

[0086] As shown in Figure 12, when the movable portion 431 extends in the first direction 001, the guide surface 4311 of the movable portion 431 slides relative to the second surface 3112, thereby driving the second connecting portion 31 away from the first connecting portion 21 and compressing the elastic member 32 until the side surface 4312 of the movable portion 431 abuts against the first surface 3111. At this point, the first connecting portion 21 and the second connecting portion 31 are disconnected, thereby achieving the disconnection of the first shaft 11 and the second shaft 12.

[0087] Therefore, the matching arrangement of the obtuse angle between the first surface 3111 and the second surface 3112 and the inclined guide surface 4311 can ensure that the force of the movable portion 431 moving along the first direction 001 drives the displacement of the second connecting portion 31 along the second direction 002. This achieves the coupling and disconnection functions of the power coupling device 100 of the present disclosure.

[0088] In one embodiment, as shown in Figures 4 to 6, along the second direction 002, the first connection portion 21 further includes a groove 211 disposed toward the second connection portion 31, and the second connection portion 31 further includes a protrusion 312 disposed toward the first connection portion 21. The groove 211 and the protrusion 312 are matched.

[0089] When the movable portion 431 extends along the first direction 001, the second connecting portion 31 is displaced toward the first connecting portion 21, and the protrusion 312 of the second connecting portion 31 extends into the groove 211 of the first connecting portion 21. It can be understood that when the protrusion 312 extends into the groove 211 and the first shaft 11 rotates, the first shaft 11 will drive the first coupling mechanism 20 to rotate around the first axis L1, thereby driving the groove 211 to rotate around the first axis L1. Based on the side of the groove 211 and the side of the protrusion 312 fitting together, the force driving the groove 211 to rotate will also be transmitted to the protrusion 312, causing the protrusion 312 to also rotate around the first axis L1. This achieves the coupling of the first connecting portion 21 and the second connecting portion 31. This realizes the power coupling function of the power coupling device 100 disclosed in the present invention.

[0090] In another embodiment, along the second direction 002, a protrusion may be provided on the side of the first connection portion 21 facing the second connection portion 31, and a groove may be provided on the side of the second connection portion 31 facing the first connection portion 21. When the movable portion 431 is extended, the groove on the second connection portion 31 extends into the corresponding protrusion, thereby realizing the power coupling function of the power coupling device 100 of the present disclosure.

[0091] In one embodiment, referring back to Figures 6 and 8 , a limiting protrusion 2111 is provided on the side of the groove 211, and a limiting groove 3121 is provided on the side of the protrusion 312 adjacent to the limiting protrusion 2111. As shown in Figure 8 , when the movable portion 431 drives the protrusion 312 into the groove 211, the limiting protrusion 2111 can be embedded in the limiting groove 3121, thereby improving the contact stability between the protrusion 312 and the groove 211. This improves the coupling stability between the first connecting portion 21 and the second connecting portion 31.

[0092] In one embodiment, as shown in Figures 6-12 , a transition protrusion 332 is provided on the surface of the mounting plate 33 facing the second connecting portion 31. The second connecting portion 31 is also rotatably connected to the transition protrusion 332. Under the action of the movable portion 431 or the elastic member 32, the second connecting portion 31 rotates about the geometric axis of the transition protrusion 332, thereby allowing the protrusion 312 of the second connecting portion 31 to extend into or retract into the groove 211. It will be appreciated that the provision of the transition protrusion 332 can not only ensure the relative movement of the second connecting portion 31 and the first connecting portion 21, but also achieve the positioning of the second connecting portion 31, further improving the coupling stability between the first connecting portion 21 and the second connecting portion 31.

[0093] It is understandable that in other embodiments, the connection relationship between the second connecting portion 31 and the mounting plate 33 may be other, and the present disclosure does not impose any particular limitation on this.

[0094] Please refer to Figure 13 for a partial view of a power coupling device 100 provided in an embodiment of the present disclosure. In order to conveniently illustrate the quantitative relationship between the first connecting portion 21 and the second connecting portion 31, Figure 13 omits a portion of the structure of the second coupling mechanism 30.

[0095] As shown in FIG13 , there are multiple second connection portions 31 evenly distributed along the circumference of the first shaft 11. Accordingly, the number of grooves 211 on the first connection portion 21 and the movable portions 431 on the electromagnetic drive mechanism 40 is the same as the number of second connection portions 31 and are arranged one-to-one with the second connection portions 31.

[0096] It can be understood that the uniform circumferential distribution of the plurality of first connecting parts 21 and the matching arrangement of the grooves 211 on the plurality of first connecting parts 21 with the movable part 431 on the electromagnetic drive mechanism 40 improve the coupling stability between the first connecting parts 21 and the second connecting parts 31 while ensuring the matching effect between each second connecting part 31 and the groove 211 on a first connecting part 21. This further improves the power coupling stability of the power coupling device 100 of the present disclosure.

[0097] In one embodiment, as shown in Figures 4 and 5 , the electromagnetic drive mechanism 40 further includes an electromagnetic drive element 41, a magnetic element 42, and a mounting plate 43. The electromagnetic drive element 41 is electrically connected to an external circuit, and the magnetic element 42 is magnetically conductive and located on the side of the electromagnetic drive element 41 facing the first engagement mechanism 20. The mounting plate 43 is connected to the side of the magnetic element 42 facing the first engagement mechanism 20, and the movable portion 431 is disposed on the mounting plate 43.

[0098] When the electromagnetic drive element 41 is energized, the magnetic element 42 is acted upon by the electromagnetic force and translated toward the electromagnetic drive element 41, being attracted by the electromagnetic drive element 41. The mounting plate 43 connected to the magnetic element 42 also moves synchronously with the magnetic element 42, thereby retracting the movable portion 431 in the first direction 001. This disconnects the first connecting portion 21 and the second connecting portion 31, thereby achieving the power disconnection function of the power coupling device 100 disclosed herein.

[0099] The electromagnetic drive element 41 is annular and sleeved around the outer edge of the first shaft 11. When there are multiple second connecting portions 31, the movable portions 431 are distributed circumferentially around the electromagnetic drive element 41. It will be appreciated that the annular electromagnetic drive element 41, while ensuring the telescopic function of the electromagnetic drive mechanism 40 of the present disclosure for the movable portion 431, also reduces the size of the power coupling device 100 of the present disclosure in the first direction 001, thereby saving space within the power coupling device 100 of the present disclosure.

[0100] In one embodiment, as shown in Figures 4 and 5, the electromagnetic drive mechanism 40 further includes a push plate assembly 44 and a second elastic member 45. Along the first direction 001, the push plate assembly 44 is connected between the mounting plate 43 and the magnetic element 42, and the second elastic member 45 is connected between the electromagnetic drive element 41 and the push plate assembly 44.

[0101] When the electromagnetic drive element 41 is energized, the magnetic element 42 is attracted to the electromagnetic drive element 41 while also compressing the second elastic element 45. When the electromagnetic drive mechanism 40 is de-energized, the elastic force stored in the second elastic element 45 is released. This elastic force acts on the mounting plate 43 through the magnetic element 42 and the push plate assembly 44, thereby extending the movable portion 431 in the first direction 001. This disconnects the first connecting portion 21 and the second connecting portion 31, thereby achieving the power coupling function of the power coupling device 100 of the present disclosure.

[0102] In one embodiment, as shown in Figures 4 and 5 , the push plate assembly 44 includes a first push plate 441, a second push plate 442, and a bearing 443. The first push plate 441 is connected between the inner ring of the bearing 443 and the mounting plate 43, and the second push plate 442 is connected between the outer ring of the bearing 443 and the magnetic element 42. The bearing 443 is configured to transmit axial force.

[0103] As can be understood, the provision of the bearing 443 ensures that when the electromagnetic drive element 41 is energized, the electromagnetic force generated by the electromagnetic drive element 41 can be transmitted to the movable portion 431 via the bearing 443. Simultaneously, when the electromagnetic drive element 41 is de-energized, the elastic force within the second elastic member 45 can also be transmitted to the movable portion 431 via the bearing 443. This ensures that the electromagnetic drive mechanism 40 can extend and retract the movable portion 431, thereby ensuring both the power coupling and power disconnection functions of the power coupling device 100 of the present disclosure.

[0104] In one embodiment, as shown in Figures 4 and 5, the power coupling device 100 of the present disclosure further includes a support bearing 51, which is sleeved on the outer edge of the first shaft 11 and at least partially housed in the electromagnetic drive element 41. The inner ring of the support bearing 51 is connected to the first shaft 11, and the outer ring of the support bearing 51 is connected to the electromagnetic drive element 41. It can be understood that the provision of the support bearing 51 ensures the relative stillness of the electromagnetic drive element 41 while ensuring the rotation of the first shaft 11 about the first axis L1. This achieves support for the electromagnetic drive element 41 and positioning of the electromagnetic drive mechanism 40.

[0105] 4 and 5 , the power coupling device 100 of the present disclosure further includes a second support bearing 52, which is sleeved on the outer edge of the first shaft 11 and spaced apart from the support bearing 51. A receiving hole 121 is defined on the surface of the second shaft 12 facing the first shaft 11.

[0106] The second support bearing 52 is received in the receiving hole 121, with the outer ring of the second support bearing 52 connected to the wall of the receiving hole 121, and the inner ring connected to the first shaft 11. It can be understood that the matching arrangement of the support bearing 51 and the second support bearing 52 defines the relative positions of the first shaft 11, the second shaft 12, and the electromagnetic drive mechanism 40, further ensuring the support effect for the first shaft 11.

[0107] In one embodiment, as shown in Figures 4 and 5, the power coupling device 100 of the present disclosure also includes a thrust bearing 53, which is connected between the first coupling mechanism 20 and the second coupling mechanism 30 to transfer the axial load between the first coupling mechanism 20 and the second coupling mechanism 30, thereby ensuring the relative position of the first coupling mechanism 20 and the second coupling mechanism 30 in the first direction 001.

[0108] It should be understood that the terms "first," "second," etc. are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the described features. In the description of the embodiments of the present disclosure, "plurality" means two or more, unless otherwise specifically defined.

[0109] Throughout this specification, reference to terms such as "one embodiment," "some embodiments," "illustrative embodiments," "examples," "specific examples," or "some examples" means that a specific feature, structure, material, or characteristic described in conjunction with the embodiment or example is included in at least one embodiment or example of the present disclosure. In this specification, illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

[0110] It should be understood that the application of the present disclosure is not limited to the above examples. Those skilled in the art can make improvements or modifications based on the above description, and all such improvements and modifications should fall within the scope of protection of the appended claims of the present disclosure. Those skilled in the art will understand that implementing all or part of the processes of the above embodiments and making equivalent changes in accordance with the claims of the present disclosure still fall within the scope of the present disclosure.

Claims

1. A power coupling device (100), characterized in that: include: first axis (11); A first engaging mechanism (20), the first engaging mechanism (20) being connected to the first shaft (11); Second axis (12); a second engaging mechanism (30), the second engaging mechanism (30) being connected to the second shaft (12); and An electromagnetic drive mechanism (40) is configured to control the coupling or disconnection of the first engaging mechanism (20) and the second engaging mechanism (30).

2. The power coupling device (100) according to claim 1, characterized in that: The first joining mechanism (20) comprises: at least one first connecting portion (21); The second joining mechanism (30) comprises: a second connecting portion (31) matching the first connecting portion (21), the second connecting portion (31) being arranged above the first connecting portion (21) along a first direction; The electromagnetic drive mechanism (40) comprises: a movable part (431) corresponding to the second connecting part (31), and the movable part (431) is configured to control the coupling of the second connecting part (31) and the first connecting part (21).

3. The power coupling device (100) according to claim 2, characterized in that: The second joining mechanism (30) further comprises: an elastic member (32) connected to the second connecting portion (31); The elastic member (32) is configured to control the second connection portion (31) to be disconnected from the first connection portion (21).

4. The power coupling device (100) according to claim 2, characterized in that: The second connecting part (31) comprises: a guiding part (311), the guiding part (311) matches the movable part (431), and the guiding part (311) and the movable part (431) are configured to control the coupling of the second connecting part (31) and the first connecting part (21).

5. The power coupling device (100) according to claim 4, characterized in that: The guide portion (311) comprises a first surface (3111) and a second surface (3112) which are connected, and the angle between the second surface (3112) and the first surface (3111) is an obtuse angle.

6. The power coupling device (100) according to claim 4 or 5, characterized in that: The movable portion (431) comprises a guide surface (4311), the guide surface (4311) is arranged at the end of the movable portion (431), and the guide surface (4311) is an inclined surface.

7. The power coupling device (100) according to claim 2, characterized in that: The first connecting portion (21) comprises: a groove (211) arranged toward the second connecting portion (31); The second connecting portion (31) comprises: a protrusion (312) arranged toward the first connecting portion (21); The movable portion (431) controls the protrusion (312) to extend into the groove (211), so as to achieve coupling between the first connecting portion (21) and the second connecting portion (31).

8. The power coupling device (100) according to claim 7, characterized in that: A limiting protrusion (2111) is provided on the side surface of the groove (211); The side of the protrusion (312) close to the limiting protrusion (2111) is provided with a limiting groove (3121); When the movable portion (431) controls the protrusion (312) to extend into the groove (211), the limiting protrusion (2111) is embedded in the limiting groove (3121) to improve the coupling stability of the first connecting portion (21) and the second connecting portion (31).

9. The power coupling device (100) according to any one of claims 2 to 8, characterized in that: The electromagnetic drive mechanism (40) further comprises: Electromagnetic drive element (41); A magnetic element (42); A mounting plate (43), the magnetic element (42) being connected to the mounting plate (43), and the movable portion (431) being arranged on the mounting plate (43); When the electromagnetic driving element (41) is energized, the magnetic element (42) is attracted by the electromagnetic driving element (41) to drive the movable portion (431) of the mounting plate (43) to disconnect the first connecting portion (21) and the second connecting portion (31).

10. The power coupling device (100) according to claim 9, characterized in that: The electromagnetic driving element (41) is ring-shaped and sleeved on the outer edge of the first shaft (11).

11. The power coupling device (100) according to claim 9, characterized in that: The electromagnetic drive mechanism (40) further comprises: A push plate assembly (44), the push plate assembly (44) being connected between the mounting plate (43) and the magnetic element (42); A second elastic member (45) connected between the electromagnetic driving element (41) and the push plate assembly (44); When the electromagnetic driving element (41) is energized, the magnetic element (42) is attracted by the electromagnetic driving element (41) to drive the movable portion (431) of the mounting plate (43), so that the first connecting portion (21) and the second connecting portion (31) are disconnected, and the second elastic member (45) is compressed; When the electromagnetic driving element (41) is powered off, the second elastic member (45) expands to drive the movable portion (431) of the mounting plate (43) through the push plate assembly (44) so ​​that the first connecting portion (21) and the second connecting portion (31) are coupled.

12. The power coupling device (100) according to claim 11, characterized in that: The push plate assembly (44) comprises: A first push plate (441) connected to the mounting plate (43); A second push plate (442) connected to the magnetic element (42); A bearing (443) connected between the first push plate (441) and the second push plate (442); The bearing (443) is configured to transmit the axial force released by the electromagnetic driving element (41) or the second elastic member (45) when the electromagnetic driving element (41) is powered on or powered off.

13. The power coupling device (100) according to claim 9, characterized in that: The power coupling device (100) further comprises: a support bearing (51) sleeved on the outer edge of the first shaft (11) and at least partially received in the electromagnetic drive element (41) for supporting the electromagnetic drive element (41).

14. The power coupling device (100) according to any one of claims 2 to 8, characterized in that: The power coupling device (100) further comprises: a thrust bearing (53) connected between the first coupling mechanism (20) and the second coupling mechanism (30) to transmit an axial load between the first coupling mechanism (20) and the second coupling mechanism (30).

15. A transmission (200), characterized in that: It comprises a power coupling device (100) as claimed in any one of claims 1 to 14.

16. The transmission (200) according to claim 15, characterized in that: The transmission (200) comprises a housing, and the power coupling device (100) is accommodated in the housing.

17. A power assembly (300), characterized in that: It comprises a first power device (301), a second power device (302), and a transmission (200) as claimed in claim 15 or 16, wherein the first power device (301) is connected to the second end of the transmission (200), and the second power device (302) is connected to the first end of the transmission (200).

18. The powertrain (300) according to claim 17, characterized in that: The power assembly (300) further comprises a third power device (303), wherein the third power device (303) is connected to the first end of the transmission (200).

19. A vehicle, characterized in that: Comprising the powertrain (300) as claimed in claim 17 or 18.

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