Switchable one-way clutch system and hybrid electric vehicle

Abstract

The utility model relates to a switchable one-way clutch system and a hybrid electric vehicle. The switchable one-way clutch system includes radially spaced first and second outer rings, and radially spaced first and second inner rings, the first inner ring radially located between the first outer ring and the second outer ring, the second outer ring radially located between the first inner ring and the second inner ring. The switchable one-way clutch comprises a first clutch assembly which is arranged between a first outer ring and a first inner ring in the radial direction, and the switchable one-way clutch can be switched between a connection state and a disconnection state so that the first inner ring and the first outer ring can be connected or disconnected. A second clutch assembly of the second one-way clutch is arranged between a second outer ring and a second inner ring in the radial direction, and the second outer ring transmits torque to the second inner ring through the second clutch assembly. Through the combination of the two one-way clutches, switching between the two-way torque transmission mode and the one-way clutch mode is achieved, the structure is simple, the size is small, cost is low, impact generated by switching is small, and the NVH performance is high.

Description

TECHNICAL FIELD

[0001] The utility model relates to hybrid power automobile technical field especially, relates to a kind of applied to the one-way clutch system and hybrid power automobile of switching of mixed power automobile. BACKGROUND

[0002] Hybrid Vehicle (HV) usually uses internal combustion engine and motor (also called driving motor) as power source, and has two sets of power transmission systems of oil drive and electric drive, can realize the series-parallel connection switching between engine, generator and driving motor, can enter electric drive mode, and also can make engine direct drive wheel, and can also be switched to engine only responsible for power generation range-increasing mode when condition allows.

[0003] When hybrid power vehicle is switched between oil drive mode and electric drive mode, connection or disconnection needs to be carried out between internal combustion engine and generator. For example, when switching from oil drive mode to electric drive mode, the torque transmission path of generator to internal combustion engine direction needs to be disconnected, so that generator cannot start internal combustion engine, and generator and driving motor drive vehicle running together, realize EV2 mode, so as to realize the effect of high acceleration and high speed.

[0004] In related technologies, wet clutch or claw clutch is usually used between internal combustion engine and generator, however, the weight and size of wet clutch are usually much larger than other clutches, and the price is more expensive. Although claw clutch is simple in structure, impact is generated when gear is engaged, and there is serious NVH problem, which affects driving experience. SUMMARY

[0005] To overcome the problems in related technologies, the present disclosure provides a one-way clutch system and hybrid power automobile.

[0006] According to a first aspect of embodiments of the present disclosure, a switchable one-way clutch system is provided, comprising: a switchable one-way clutch comprising a first outer ring, a first inner ring, and a first clutch assembly disposed radially between the first outer ring and the first inner ring, the switchable one-way clutch being switchable between a one-way torque transmission state and a fully disconnected state; a second one-way clutch comprising a second outer ring, a second inner ring, and a second clutch assembly disposed radially between the second outer ring and the second inner ring, the second one-way clutch enabling one-way torque transmission from the second outer ring to the second inner ring; the first outer ring and the second outer ring being torsionally connected; the first inner ring and the second inner ring being torsionally connected; when the switchable one-way clutch is in the one-way torque transmission state, the switchable one-way clutch system is capable of transmitting torque from the first inner ring to the first outer ring and the second outer ring via the switchable one-way clutch, and transmitting torque from the second outer ring to the second inner ring and the first inner ring via the second one-way clutch; when the switchable one-way clutch is in the fully disconnected state, the switchable one-way clutch system is only capable of transmitting torque from the second outer ring to the second inner ring and the first inner ring via the second one-way clutch.

[0007] In some embodiments, the second outer ring is radially spaced inward of the first outer ring; and the second inner ring is radially spaced inward of the first inner ring.

[0008] In some embodiments, the first outer ring has a radially inner wall with a receiving groove gradually deepening in a circumferential first direction; the first clutch assembly comprises: a first ball, a radially outer side of the first ball being located in the receiving groove; a cage, located radially inward of a pitch circle of the first ball, the cage comprising a plurality of pockets in a circumferential direction, a radially inner side of the first ball being located in the pockets; and the switchable one-way clutch further comprises a driving assembly for driving the cage to rotate, the rotation of the cage driving the first ball to move in the receiving groove and disengage from the first inner ring.

[0009] In some embodiments, the driving assembly comprises: a switching frame comprising a first radial portion and a first axial portion, the first radial portion being located at one axial side of the first outer ring and being torsionally connected with the retainer frame, and the first axial portion being sleeved at the radially outer side of the first outer ring; a push plate comprising a second radial portion and a second axial portion, the second radial portion being located at the other axial side of the first outer ring, the second axial portion being torsionally connected with the first axial portion and being axially movable relative to the first axial portion, and the second axial portion being provided with a guide inclined slot; and a fixing pin, the fixing pin being fixed at the radially outer side of the first outer ring and being located in the guide inclined slot of the push plate, wherein when the push plate moves in the axial direction towards the other axial side of the first outer ring, the axial force drives the fixing pin to move along the guide inclined slot to rotate the push plate, thereby driving the switching frame and the retainer frame to rotate, and the retainer frame pushes the first ball to move towards the deep groove of the accommodating groove, so that the radially inner side of the first ball is separated from the first inner ring.

[0010] In some embodiments, the radially inner side of the first radial portion of the switching frame is provided with a clamping groove, the retainer frame protrudes axially with a clamping plate, the clamping plate is clamped into the clamping groove, and the first radial portion of the switching frame is torsionally connected with the retainer frame.

[0011] In some embodiments, the second axial portion is located at the radially inner side of the first axial portion and axially overlaps with the first axial portion, the first axial portion of the switching frame is provided with an elongated slot extending in the circumferential direction to allow the fixing pin to pass through.

[0012] In some embodiments, the radially inner side of the first axial portion of the switching frame is provided with a radially protruding groove, the radially outer side of the second axial portion of the push plate is provided with a protrusion, the protrusion is clamped into the groove, the torsional connection between the second axial portion and the first axial portion is achieved, and the axial movement of the second axial portion relative to the first axial portion is achieved.

[0013] In some embodiments, the driving assembly further comprises a reset spring, the reset spring abuts between the second radial portion of the push plate and the other axial side wall of the first outer ring in the axial direction, for supporting the push plate away from the other axial side of the first outer ring, so that the first ball is located at the shallow groove of the accommodating groove, and the radially inner side of the first ball abuts with the first inner ring.

[0014] In some embodiments, the first clutch assembly further comprises: a stopper fixed at the radially outer side of the retainer frame between the two pockets in the circumferential direction; and a first spring abutting at one side of the first ball close to the deep groove of the accommodating groove, so that in the initial position, the elastic force of the first spring pushes the first ball to the shallow groove of the accommodating groove and abuts with the stopper.

[0015] In some embodiments, the first outer ring and the second outer ring are integrally formed; and / or the first inner ring and the second inner ring are integrally formed.

[0016] In some embodiments, the second clutch assembly comprises: a second ball; a second spring, a radially inner wall of the second outer ring is provided with a second accommodating groove gradually deepening in a second circumferential direction, the second spring is abutted on one side of the second ball close to a deep groove of the second accommodating groove, so that in the initial position, the elastic force of the second spring pushes the second ball to the shallow groove of the second accommodating groove.

[0017] According to a first aspect of the embodiments of the present disclosure, the present disclosure provides a hybrid vehicle, comprising: a drive motor; an internal combustion engine, a transmission shaft of the internal combustion engine is parallel to the drive motor; an electric motor, a transmission shaft of the electric motor is parallel to an output shaft of the drive motor and the transmission shaft of the internal combustion engine; and a switchable one-way clutch system as described in the first aspect, connected between the transmission shaft of the internal combustion engine and the transmission shaft of the electric motor, wherein the first outer ring is in driving connection with the transmission shaft of the internal combustion engine, the first inner ring is in driving connection with the transmission shaft of the electric motor, and when the switchable one-way clutch is in a fully disconnected state, the electric motor cannot start the internal combustion engine.

[0018] The technical solutions provided by the embodiments of the present disclosure can have the following beneficial effects: by arranging the switchable one-way clutch system between the internal combustion engine and the electric motor, bidirectional torque transmission between the internal combustion engine and the electric motor and unidirectional torque transmission from the internal combustion engine to the electric motor can be realized, the vehicle can be flexibly switched between the oil drive mode and the electric drive mode, and it is ensured that the internal combustion engine will not be started accidentally in the electric drive mode. In addition, the switchable one-way clutch system of the present disclosure has the advantages of simple structure, small size and low cost, small impact during switching, optimized NVH performance of the vehicle, and improved overall driving comfort. BRIEF DESCRIPTION OF DRAWINGS

[0019] The accompanying drawings, which are incorporated in and constitute a part of the specification, illustrate embodiments consistent with the present disclosure and serve to explain the principles of the present disclosure together with the specification.

[0020] Figure 1 is a drive system architecture diagram of a hybrid vehicle according to an exemplary embodiment;

[0021] Figure 2 is a power transmission diagram of a switchable one-way clutch system according to an exemplary embodiment;

[0022] Figure 3 is a schematic diagram showing that the electric motor transmits torque to the internal combustion engine through the SOWC;

[0023] Figure 4 A schematic diagram showing the internal combustion engine transmitting torque to the generator through the OWC is shown;

[0024] Figure 5 A schematic diagram showing the generator cannot transmit torque to the internal combustion engine through the disconnected SOWC is shown;

[0025] Figure 6 A partial sectional view when the SOWC is connected is shown;

[0026] Figure 7 A front view is shown from the axial side and removing the first radial part; Figure 6 A front view is shown from the axial side and removing the first radial part;

[0027] Figure 8 A partial sectional view when the SOWC is disconnected is shown;

[0028] Figure 9 A front view is shown from the axial side and removing the first radial part; Figure 8 A front view is shown from the axial side and removing the first radial part;

[0029] Figure 10 A partial schematic diagram showing the engagement of the clamping groove of the switching frame and the clamping convex of the retaining frame is shown;

[0030] Figure 11 A partial schematic diagram showing the engagement of the clamping groove of the switching frame and the clamping convex of the retaining frame is shown;

[0031] Figure 12 A schematic diagram showing the engagement of the fixing pin and the guide inclined groove is shown. DETAILED DESCRIPTION

[0032] The exemplary embodiments will be described in detail herein with reference to the attached drawings. In the following description, like reference numerals refer to like elements, unless the context clearly dictates otherwise. The following exemplary embodiments described herein are not meant to represent all embodiments consistent with the present disclosure. Rather, they are merely examples of apparatus and methods consistent with some aspects of the present disclosure as detailed in the appended claims.

[0033] In the present disclosure, unless otherwise specified, axial, radial and circumferential refer to the axial, radial and circumferential of the switchable one-way clutch system; the axial side refers to the left side in Figure 6 and Figure 8 , and the other axial side refers to the right side in Figure 6 and Figure 8 ; the radial outer side refers to the side away from Figure 6The side of the central axis O in the diagram refers to the radially inner side, which is closer to the central axis O in the radial direction. Furthermore, "transmission connection" refers to the ability to transmit driving force / torque between two components, which can be directly connected or achieved through various transmission mechanisms or connection structures. The term "torsional connection" refers to a connection between two elements that does not rotate relative to each other, which can be achieved via a press fit (i.e., interference fit) or by integrally forming the two components. Those skilled in the art will understand the specific meaning of the above terms in this invention as appropriate.

[0034] To address the aforementioned technical problems, this disclosure provides a switchable one-way clutch system 100. In this embodiment, the switchable one-way clutch system 100 is applied in a hybrid electric vehicle. Figure 1 The diagram shown is a framework diagram of the drive system of a hybrid electric vehicle. Figure 1 As can be seen, the hybrid electric vehicle includes a drive motor 200, an internal combustion engine 300, a generator 400, a switchable one-way clutch system 100, and a first clutch system C1. Both the drive motor 200 and the internal combustion engine 300 are power sources, capable of independently transmitting power and torque to the wheels 500. The vehicle simultaneously possesses a hydraulic drive mode, an electric drive mode, and a hybrid drive mode. By controlling the engagement or disengagement of the first clutch system C1 and the switchable one-way clutch system 100, the power source providing power to the wheels 500 is switched, allowing the vehicle to switch between electric drive mode, hydraulic drive mode, and hybrid drive mode.

[0035] When the electric drive mode needs to be activated, the one-way path for torque transmission from the generator 400 to the internal combustion engine 300 must be cut off. The generator 400 cannot supply power to the internal combustion engine 300 to start it, thus preventing the internal combustion engine 300 from transmitting power and torque to the wheels 500. Therefore, a switchable one-way clutch system 100 can be positioned between the internal combustion engine 300 and the generator 400. The electric drive mode can be divided into a single-motor drive mode and a dual-motor drive mode. In the single-motor drive mode, the first clutch system C1 is disengaged, and only the drive motor 200 transmits power and torque to the wheels 500. In the dual-motor drive mode, the first clutch system C1 is engaged, and both the generator 400 and the drive motor 200 can simultaneously transmit power and torque to the wheels 500.

[0036] When the oil drive mode needs to be activated, the power supply to the drive motor 200 needs to be cut off, and the drive motor 200 will not start. The generator 400 is energized and supplies power to the internal combustion engine 300 through the switchable one-way clutch system 100, causing the internal combustion engine 300 to start. After that, the generator 400 is de-energized and the first clutch system C1 is engaged, and finally the internal combustion engine 300 can transmit power and torque to the wheels 500 independently.

[0037] When it is required to start the hybrid drive mode, the drive motor 200 is powered, the drive motor 200 starts and can transmit torque to the wheels 500. At the same time, the generator 400 powers the internal combustion engine 300 through the switchable one-way clutch system 100 and the internal combustion engine 300 is started, at the same time the first clutch system Cl is closed, the internal combustion engine 300 can transmit power and torque to the wheels 500, and finally realize the internal combustion engine 300 and the drive motor 200 simultaneously providing driving torque to the wheels 500.

[0038] The switchable one-way clutch system 100 includes an outer ring and an inner ring, as shown in Figure 2 and Figure 5 , the outer ring is drivingly connected with the transmission shaft 301 of the internal combustion engine 300, and the inner ring is drivingly connected with the transmission shaft 401 of the generator 400. The switchable one-way clutch system 100 further includes a switchable one-way clutch 50 and a second one-way clutch 60. The outer ring can include a first outer ring 10 and a second outer ring 20 which are radially spaced and torsionally connected, and the inner ring can include a first inner ring 30 and a second inner ring 40 which are radially spaced and torsionally connected.

[0039] In some embodiments, the first outer ring 10 and the second outer ring 20 are integrally formed, and the second outer ring 20 is radially spaced on the radially inner side of the first outer ring 10. The first inner ring 30 and the second inner ring 40 are integrally formed, the first inner ring 30 is radially located between the first outer ring 10 and the second outer ring 20, and the second inner ring 40 is radially spaced on the radially inner side of the first inner ring 30 and on the radially inner side of the second outer ring 20.

[0040] Among them, the switchable one-way clutch 50 can be a Selectable one-way clutch, abbreviated as SOWC. The switchable one-way clutch 50 includes a first clutch assembly 51, which is drivingly connected between the first outer ring 10 and the first inner ring 30 in the radial direction. As shown in Figure 3 , the first clutch assembly 51 only allows the generator 400 (the first inner ring 30) to transmit torque to the internal combustion engine 300 (the first outer ring 10), and the internal combustion engine 300 cannot transmit torque to the generator 400 through the first clutch assembly 51.

[0041] In normal state, the switchable one-way clutch 50 (equivalent to a common one-way clutch) is in one-way clutch state, that is, when the drive assembly 52 is not operated, the first clutch assembly 51 is in one-way connection state, the generator 400 can transmit torque to the internal combustion engine 300 through the switchable one-way clutch 50, so that the generator 400 transmits torque to the transmission shaft 301 of the internal combustion engine 300 through the transmission shaft 401 to drive the internal combustion engine 300, and after the internal combustion engine 300 is started, the generator 400 is disconnected and no longer provides torque to the internal combustion engine 300, and the driving force generated after the internal combustion engine 300 is started is transmitted to the wheels 500 through the second one-way clutch 60, so that the oil drive mode or the oil-electric hybrid drive mode can be realized.

[0042] When the drive assembly 52 is operated in the case that the internal combustion engine 300 is turned off, the switchable one-way clutch 50 is switched from the one-way clutch state to the completely disconnected state, the first outer ring 10 and the first inner ring 30 are disconnected, and the generator 400 cannot transmit torque to the internal combustion engine 300 (as shown in Figure 5 Therefore, the generator 400 cannot start the internal combustion engine 300, so that the internal combustion engine 300 cannot provide driving force to the wheels 500, the driving motor 200 is started and provides driving force to the wheels 500, so that the single-motor electric drive mode is realized, and if the first clutch system C1 is also closed at the same time, the double-motor electric drive mode is realized.

[0043] The second one-way clutch 60 can be referred to as a one-way clutch, abbreviated as OWC. The second one-way clutch 60 is also a normally closed clutch, and the second one-way clutch 60 is always in a connected state. The second one-way clutch 60 is located radially between the second outer ring 20 and the second inner ring 40. Figure 4 As shown in The transmission direction of the second one-way clutch 60 only allows the internal combustion engine 300 (the second outer ring 20) to transmit torque to the generator 400 (the second inner ring 40), and the internal combustion engine 300 rotates to supply power to the generator 400, and the generator 400 cannot transmit torque to the internal combustion engine 300 through the second one-way clutch 60.

[0044] As can be seen, in the oil drive mode or the oil-electric hybrid drive mode, the first clutch assembly 51 of the switchable one-way clutch 50 is in the one-way connection state, the generator 400 can transmit torque to the internal combustion engine 300, so that the internal combustion engine 300 starts and transmits power to the wheels 500, and at the same time, the second one-way clutch 60 allows the internal combustion engine 300 to continue to supply power to the generator 400. When it is needed to switch to the electric drive mode, the first clutch assembly 51 of the switchable one-way clutch system 100 is disconnected, the first outer ring 10 and the first inner ring 30 are disconnected, the generator 400 cannot transmit torque to the internal combustion engine 300, and the internal combustion engine 300 cannot be started, so as to transmit torque to the wheels 500. At this time, the drive motor 200 transmits torque to the wheels 500 alone to realize the single-motor electric drive mode. However, the second one-way clutch 60 still allows the internal combustion engine 300 to supply power to the generator 400, and if the first clutch system C1 is closed, the generator 400 and the drive motor 200 can drive the vehicle together to realize the EV2 mode (i.e., the double-motor electric drive mode), so as to realize the effect of high acceleration and high speed.

[0045] Compared with the friction clutch used between the generator 400 and the internal combustion engine 300 in the related art, the switchable one-way clutch system 100 in the embodiment has a simpler structure and is lighter in weight. In addition, compared with the dog clutch used between the generator 400 and the internal combustion engine 300 in the related art, the switchable one-way clutch system 100 in the embodiment has a smaller gap and good NVH performance of the vehicle.

[0046] The working principle of the switchable one-way clutch 50 will be described in detail as follows.

[0047] As shown in FIGS. 1, 2 and 3, the switchable one-way clutch 50 includes a first clutch assembly 51, a second clutch assembly 52 and a drive assembly 53. Figure 7 and Figure 9 As shown in FIGS. 1, 2 and 3, the switchable one-way clutch 50 includes a first clutch assembly 51, a second clutch assembly 52 and a drive assembly 53. Figure 3 The radially inner wall of the first outer ring 10 is provided with an accommodating groove 11 gradually deepened in the circumferential direction W in the first direction (as indicated by the arrow in FIG. 1), and the accommodating groove 11 includes a shallow groove and a deep groove, and the shallow groove gradually deepens into the deep groove in the first direction.

[0048] The switchable one-way clutch 50 further includes a drive assembly 52 in transmission connection with the first clutch assembly 51, for transmitting power to the first clutch assembly 51 to disconnect the first clutch assembly 51. The first clutch assembly 51 includes a first ball 511, a retainer 512, a stop block 513 and a first spring 514.

[0049] The first ball 511 is in abutment with the accommodating groove 11 radially outward, and can move in the accommodating groove 11 in the circumferential direction W. The radial distance between the first outer ring 10 and the first inner ring 30 is less than the diameter of the first ball 511, so that the first ball 511 cannot be separated from the accommodating groove 11. In the normally closed state of the first clutch assembly 51, the first ball 511 is located at the shallow groove of the accommodating groove 11, and the radially inner side of the first ball 511 is in abutment with the first inner ring 30, so that the first clutch assembly 51 is in the one-way connection state. When the first ball 511 is at the deep groove of the accommodating groove 11, the radially inner side of the first ball 511 is separated from the first inner ring 30, so that the first clutch assembly 51 is in the disconnection state. By switching the first ball 511 between the shallow groove and the deep groove of the accommodating groove 11, the abutment and separation of the first ball 511 and the first inner ring 30 are realized, so that the switching of the connection state and the disconnection state of the first clutch assembly 51 is realized.

[0050] The retainer 512 is located radially inward of the pitch circle of the first ball 511, and the retainer 512 includes a plurality of pockets in the circumferential direction W, and the radially inner side of the first ball 511 is located in the pocket. The driving assembly 52 can drive the retainer 512 to rotate in the first direction, so as to push the first ball 511 from the shallow groove to the deep groove, and separate the first ball 511 from the first inner ring 30.

[0051] The stopper 513 is fixed to the radially outer side of the retainer 512, and is fixed between two pockets in the circumferential direction W. The stopper 513 is always in abutment with the first ball 511, which not only limits the circumferential position of the first ball 511, but also plays a role in assisting the retainer 512 to push the first ball 511 when the retainer 512 pushes the first ball 511 to move in the accommodating groove 11.

[0052] One end of the first spring 514 is in abutment with the first ball 511 near the deep groove of the accommodating groove 11, and the other end of the first spring 514 is in abutment with the stopper 513 for stopping the adjacent first ball 511. In the initial position, the elastic force of the first spring 514 pushes the first ball 511 to the shallow groove of the accommodating groove 11, and the first ball 511 is in abutment with the stopper 513.

[0053] After the retainer 512 is driven, the elastic force of the first spring 514 can be overcome, and the retainer 512 pushes the first ball 511 to move from the shallow groove to the deep groove in the accommodating groove 11 in the first direction.

[0054] When the first ball 511 is in the shallow groove, the radially inner side of the first ball 511 can be in abutment with the first inner ring 30. If the first inner ring 30 rotates in the first direction (as indicated by the dashed arrow of Figure 3 , the first outer ring 10 can be driven to rotate in the first direction (as indicated by the solid arrow of Figure 3 ), and the generator 400 can transmit torque to the internal combustion engine 300, and the first clutch assembly 51 is in the connection state.

[0055] When the first ball 511 is in the deep groove, the first ball 511 is lifted up by the cage 512 and radially disengaged from the first inner ring 30, the first inner ring 30 cannot drive the first outer ring 10 to rotate through the first ball 511, the generator 400 cannot transmit torque to the internal combustion engine 300, and the first clutch assembly 51 is in the disengaged state.

[0056] The drive assembly 52 includes a switching cage 521, a push plate 522, a fixed pin 523, and a reset spring 524.

[0057] As shown in Figure 6 and Figure 8 , the switching cage 521 includes a first radial portion 5211 and a first axial portion 5212, the first radial portion 5211 is located at one axial side of the first outer ring 10 and is torsionally connected with the cage 512 of the first clutch assembly 51, and the first axial portion 5212 is sleeved on the radially outer side of the first outer ring 10. The switching cage 521 is provided with an elongated slot 5214 (as shown in Figure 11 ) penetrating along the radial direction R and extending along the circumferential direction W. In some embodiments, as shown in Figure 10 , the radially inner side of the first radial portion 5211 of the switching cage 521 is provided with a clamping groove 5213, and the cage 512 protrudes in the axial direction A with a clamping plate 5121, the clamping plate 5121 is clamped into the clamping groove 5213, so that the first radial portion 5211 of the switching cage 521 and the cage 512 can be torsionally connected.

[0058] Further as shown in Figure 6 and Figure 8 , the push plate 522 includes a second radial portion 5221 and a second axial portion 5222, and the second radial portion 5221 is located at the other axial side of the first outer ring 10. In some embodiments, the second axial portion 5222 of the push plate 522 is located at the radially inner side of the first axial portion 5212 of the switching cage 521, and the second axial portion 5222 overlaps the first axial portion 5212 in the axial direction A, the second axial portion 5222 is torsionally connected with the first axial portion 5212, but the second axial portion 5222 can move axially relative to the first axial portion 5212.

[0059] In some embodiments, as shown in Figure 11As shown, the radially inner side of the first axial portion 5212 of the switching frame 521 is provided with a groove 5215 protruding towards the radially outer side, and the radially outer side of the second axial portion 5222 of the push plate 522 is provided with a protrusion 5224, the protrusion 5224 of the push plate 522 is clamped into the groove 5215 of the switching frame 521, realizing the anti-torsion connection between the second axial portion 5222 and the first axial portion 5212, i.e. the anti-torsion connection between the push plate 522 and the switching frame 521, the groove 5215 has an opening at the other axial side, so that the protrusion 5224 can move axially in the groove 5215, thereby enabling the axial movement of the second axial portion 5222 relative to the first axial portion 5212. The shapes of the groove 5215 and the protrusion 5224 are matched, which can be trapezoidal, triangular, square or any other shape, which is not specifically limited here.

[0060] Further, as shown in Figure 11 and Figure 12 , the second axial portion 5222 is further provided with a radially through guide chute 5223, wherein the guide chute 5223 is inclined from one axial side to the other axial side along the first direction D (the direction indicated by the arrow D in Figure 11 and Figure 12 ). Figure 11 The side surface of Figure 12 which is opposite to the observer, the right side as shown in

[0061] .

[0062] As shown in Figure 6 , the reset spring 524 abuts between the other axial wall of the first outer ring 10 and the second radial portion 5221 of the push plate 522 along the axial direction A, and in the initial state, the reset spring 524 is used to support the second radial portion 5221 of the push plate 522 away from the other axial wall of the first outer ring 10, at this time, as shown in Figure 12 , the fixed pin 523 is located at one end of the guide chute 5223 close to the other axial side, and as shown in Figure 7 , at this time, the first ball 511 is located at the shallow groove of the accommodating groove 11, and the radially inner side of the first ball 511 abuts against the first inner ring 30.

[0063] As shown in Figure 8As shown, when the second radial portion 5221 of the push plate 522 moves along the axial direction A towards the axial other side wall of the first outer ring 10, the fixing pin 523 needs to move along the guide inclined groove 5223 of the second axial portion 5222. When the fixing pin 523 moves towards the end of the guide inclined groove 5223 close to the axial one side, since the fixing pin 523 is fixed on the first outer ring 10 and does not move, the axial force exerted by the fixing pin 523 on the second axial portion 5222 of the push plate 522 is converted into a circumferential rotation force of the second axial portion 5222 to drive the second axial portion 5222 of the push plate 522 to rotate in the first direction D (as shown in Figure 12 As shown, the second axial portion 5222 of the push plate 522 rotates to drive the first axial portion 5212 of the switching frame 521 to rotate in the first direction D, since the push plate 522 is torsionally connected with the switching frame 521. In addition, the switching frame 521 rotates to drive the retaining frame 512 to rotate in the first direction D, since the first radial portion 5211 of the switching frame 521 is torsionally connected with the retaining frame 512. At this time, the retaining frame 512 and the stop block 513 on the retaining frame 512 push the first ball 511 to move towards the deep groove of the accommodating groove 11, the first ball 511 is lifted radially, and the radial inner side of the first ball 511 is separated from the radial outer wall of the first inner ring 30.

[0064] As shown, the push plate 522 can be driven by the driver 600, which can be a hydraulic drive, an electromagnetic drive, or any driver 600, which is not limited here. Figure 1 As shown, the push plate 522 can be driven by the driver 600, which can be a hydraulic drive, an electromagnetic drive, or any driver 600, which is not limited here.

[0065] In summary, through the design of the reset spring 524 and the fixing pin 523, the linkage of the push plate 522, the switching frame 521 and the retaining frame 512 is realized, so as to accurately control the position of the first ball 511 in the accommodating groove 11. In the initial state, the first ball 511 abuts against the first inner ring 30, so as to ensure that the generator 400 can transmit torque to the internal combustion engine 300. When it is needed to switch to the electric drive mode, the axial movement of the push plate 522 is finally converted into the rotation movement of the retaining frame 512, so as to finally move the first ball 511 to the deep groove of the accommodating groove 11 and separate from the first inner ring 30, thereby cutting off the path of transmitting torque from the generator 400 to the internal combustion engine 300, which ensures the efficient switching of the hybrid electric vehicle in different modes and avoids the vibration or impact caused by the gear engagement in the related art, thereby improving the NVH performance of the whole vehicle.

[0066] In some embodiments, as shown in Figure 4 and Figure 5As shown, the second clutch assembly 61 includes a second ball 611 and a second spring 612. As can be seen from the above, the second clutch assembly 61 is radially located between the second outer ring 20 and the second inner ring 40. The radial inner wall of the second outer ring 20 is provided with a second receiving groove 21 that gradually deepens along the first circumferential direction. The second receiving groove 21 also includes a shallow groove and a deep groove, with the shallow groove deepening towards the first direction to form the deep groove.

[0067] The radial distance between the radial inner wall of the second outer ring 20 and the radial outer wall of the second inner ring 40 is less than the diameter of the second ball 611. The second ball 611 is located in the second receiving groove 21, preventing it from disengaging. The second spring 612 abuts against the side of the second ball 611 closest to the deep groove of the second receiving groove 21. In the initial position, the elastic force of the second spring 612 pushes the second ball 611 to the shallow groove of the second receiving groove 21, causing the radial inner side of the second ball 611 to abut against the second inner ring 40, and the second one-way clutch 60 is engaged.

[0068] If at this time the second outer ring 20 is facing the first direction ( Figure 4 If the dotted arrow indicates the direction of rotation, it can drive the second inner ring 40 to rotate in the first direction ( Figure 4 When the solid arrow in the diagram shows the direction of rotation, the internal combustion engine 300 can supply power to the generator 400, which, together with the drive motor 200, drives the vehicle to achieve EV2 mode, thereby achieving high acceleration and high speed.

[0069] It is further understood that the terms "first," "second," etc., are used to describe various structures, but these structures should not be limited to these terms. These terms are only used to distinguish structures of the same type from one another and do not indicate a specific order or degree of importance. In fact, the expressions "first," "second," etc., are completely interchangeable. For example, without departing from the scope of this disclosure, the first inner ring 30 can also be referred to as the second inner ring 40, and similarly, the second inner ring 40 can also be referred to as the first inner ring 30.

[0070] Other embodiments of this disclosure will readily occur to those skilled in the art upon consideration of the specification and practice of the utility models disclosed herein. This application is intended to cover any variations, uses, or adaptations of this disclosure that follow the general principles of this disclosure and include common knowledge or customary techniques in the art not disclosed herein. The specification and embodiments are to be considered exemplary only, and the true scope and spirit of this disclosure are indicated by the following claims. It should be understood that this disclosure is not limited to the precise structures described above and shown in the drawings, and various modifications and changes can be made without departing from its scope. The scope of this disclosure is limited only by the appended claims.

Claims

1. A switchable one-way clutch system (100), characterized by The application relates to a switchable one-way clutch system (100) comprising: a switchable one-way clutch (50) comprising a first outer ring (10), a first inner ring (30) and a first clutch assembly (51) radially arranged between the first outer ring (10) and the first inner ring (30), the switchable one-way clutch (50) being switchable between a one-way torque transmission state and a fully disconnected state; a second one-way clutch (60) comprising a second outer ring (20), a second inner ring (40) and a second clutch assembly (61) radially arranged between the second outer ring (20) and the second inner ring (40), the second one-way clutch (60) allowing the second outer ring (20) to transmit torque to the second inner ring (40) in one direction only; the first outer ring (10) and the second outer ring (20) are torsionally connected; the first inner ring (30) and the second inner ring (40) are torsionally connected, when the switchable one-way clutch (50) is in the one-way torque transmission state, the switchable one-way clutch system (100) can transmit torque from the first inner ring (30) to the first outer ring (10) and the second outer ring (20) through the switchable one-way clutch (50), and can transmit torque from the second outer ring (20) to the second inner ring (40) and the first inner ring (30) through the second one-way clutch (60); when the switchable one-way clutch (50) is in the fully disconnected state, the switchable one-way clutch system (100) can only transmit torque from the second outer ring (20) to the second inner ring (40) and the first inner ring (30) through the second one-way clutch (60).

2. The switchable one-way clutch system (100) according to claim 1, characterized in that the second outer ring (20) is radially spaced inward of the first outer ring (10); the second inner ring (40) is radially spaced inward of the first inner ring (30).

3. The switchable one-way clutch system (100) according to claim 1, characterized in that a radially inner wall of the first outer ring (10) is provided with a receiving groove (11) gradually deepening in a circumferential first direction; the first clutch assembly (51) comprises: first balls (511) radially outward of which are located in the receiving groove (11); a retainer (512) radially inward of the first balls (511), the retainer (512) comprising a plurality of pockets in a circumferential direction, the first balls (511) radially inward of which are located in the pockets; the switchable one-way clutch (50) further comprises a driving assembly (52) for driving the retainer (512) to rotate, the rotation of the retainer (512) driving the first balls (511) to move in the receiving groove (11) and disengage from the first inner ring (30).

4. The switchable one-way clutch system (100) according to claim 3, characterized in that the driving assembly (52) comprises: a switching frame (521) comprising a first radial portion (5211) and a first axial portion (5212), the first radial portion (5211) being located on an axial side of the first outer ring (10) and being torsionally connected with the retainer (512), the first axial portion (5212) being sleeved on a radially outer side of the first outer ring (10); a push plate (522) comprising a second radial portion (5221) located at the axially opposite side of the first outer ring (10) and a second axial portion (5222) torsionally connected with the first axial portion (5212) and axially movable relative to the first axial portion (5212), the second axial portion (5222) being provided with a guide inclined groove (5223); a fixing pin (523) fixed at the radially outer side of the first outer ring (10) and located in the guide inclined groove (5223) of the push plate (522), wherein when the push plate (522) moves axially towards the axially opposite side of the first outer ring (10), the axial force drives the fixing pin (523) to move along the guide inclined groove (5223) to rotate the push plate (522), thereby driving the switching frame (521) and the retaining frame (512) to rotate, the retaining frame (512) pushing the first rolling ball (511) to move towards the deep groove of the accommodating groove (11), so that the radially inner side of the first rolling ball (511) is separated from the first inner ring (30).

5. The switchable one-way clutch system (100) according to claim 4, characterized in that The radially inner side of the first radial portion (5211) of the switching frame (521) is provided with a clamping groove (5213), the retaining frame (512) protrudes axially with a clamping plate (5121), the clamping plate (5121) is clamped into the clamping groove (5213), so that the first radial portion (5211) of the switching frame (521) is torsionally connected with the retaining frame (512).

6. The switchable one-way clutch system (100) according to claim 4, characterized in that The second axial portion (5222) is located at the radially inner side of the first axial portion (5212) and axially overlaps with the first axial portion (5212), the first axial portion (5212) of the switching frame (521) is provided with an elongated groove (5214) extending in the circumferential direction, allowing the fixing pin (523) to pass through.

7. The switchable one-way clutch system (100) according to claim 4, characterized in that The radially inner side of the first axial portion (5212) of the switching frame (521) is provided with a groove (5215) of a radially protruding (5224), the radially outer side of the second axial portion (5222) of the push plate (522) is provided with a protrusion (5224), the protrusion (5224) is clamped into the groove (5215), realizing the torsional connection between the second axial portion (5222) and the first axial portion (5212), and the axial movement relative to the first axial portion (5212).

8. The switchable one-way clutch system (100) according to claim 4, characterized in that The drive assembly (52) further comprises a reset spring (524) abutting between the second radial portion (5221) of the push plate (522) and the axially opposite wall of the first outer ring (10) in the axial direction, for supporting the push plate (522) away from the axially opposite side of the first outer ring (10), so that the first rolling ball (511) is located at the shallow groove of the accommodating groove (11), and the radially inner side of the first rolling ball (511) abuts against the first inner ring (30).

9. The switchable one-way clutch system (100) according to claim 3, characterized in that The first clutch assembly (51) further comprises: A stop block (513) fixed circumferentially on the radially outer side of the retainer (512) between two of the pockets; A first spring (514) abutting against one side of the first ball (511) near the deep groove of the accommodating groove (11), such that in the initial position, the elastic force of the first spring (514) pushes the first ball (511) to the shallow groove of the accommodating groove (11) and abuts against the stop block (513).

10. The switchable one-way clutch system (100) of claim 1, characterized in that The first outer ring (10) and the second outer ring (20) are integrally formed; and / or The first inner ring (30) and the second inner ring (40) are integrally formed.

11. The switchable one-way clutch system (100) according to claim 9, characterized in that The second clutch assembly (61) further comprises: A second ball (611); A second spring (612), the radially inner wall of the second outer ring (20) is provided with a second accommodating groove (21) gradually deepening in the circumferential second direction, and the second spring (612) abuts against one side of the second ball (611) near the deep groove of the second accommodating groove (21), such that in the initial position, the elastic force of the second spring (612) pushes the second ball (611) to the shallow groove of the second accommodating groove (21).

12. A hybrid vehicle characterized by comprising: Comprise: A drive motor (200); An internal combustion engine (300), the transmission shaft (301) of the internal combustion engine (300) is parallel to the output shaft of the drive motor (200); A generator (400), the transmission shaft (401) of the generator (400) is parallel to the output shaft of the drive motor (200) and the transmission shaft (301) of the internal combustion engine (300); And The switchable one-way clutch system (100) according to any one of claims 1 to 11, connected between the transmission shaft (301) of the internal combustion engine (300) and the transmission shaft (401) of the generator (400), Wherein, the first outer ring (10) is in driving connection with the transmission shaft (301) of the internal combustion engine (300), the first inner ring (30) is in driving connection with the transmission shaft (401) of the generator (400), when the switchable one-way clutch (50) is in the fully disconnected state, the generator (400) cannot start the internal combustion engine (300).

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