Disconnection module, power transmission system of vehicle and vehicle

Abstract

The invention relates to a disconnect module (10) for engaging or disengaging a first component (20) rotatable about a first shaft (30) with or from the first shaft, comprising: a clutch (12) rotationally fixedly mounted on the first shaft; the driving part (11) is arranged between the first component and the clutch part in the axial direction and fixedly connected to the first component, the clutch part can reciprocate in the axial direction so as to be connected and disconnected with the driving part, and in the connected state, the first shaft can rotate together with the first component; and the limiting mechanism (13) is positioned on one of the clutch piece and the driving piece and can be matched with the other one of the clutch piece and the driving piece so as to limit the axial relative position of the clutch piece and the driving piece. According to the disconnecting module, a traditional clutch is split into two components, the idle axial space in an existing device is fully utilized, meanwhile, the limiting mechanism is provided, the clutch piece and the driving piece cannot be scattered, all the assemblies can be packaged into one module to be provided, and therefore the disconnecting module can be directly assembled on an existing power transmission system; and time and labor cost are reduced. The invention also relates to a power transmission system of a vehicle and a vehicle.

Description

Technical Field

[0001] The present invention relates to a disconnect module for engaging or disengaging a first component rotatable about a first axis with the first axis. The present invention also relates to a vehicle powertrain comprising the disconnect module. The present invention further relates to a vehicle comprising the powertrain. Background Art

[0002] The trend towards designing and manufacturing fuel-efficient, low-emission vehicles has increased significantly, driven by environmental concerns and rising fuel costs. At the forefront of this trend is the development of electric vehicles, such as pure electric vehicles, hybrid vehicles, plug-in hybrid vehicles, extended-range electric vehicles, and fuel cell vehicles.

[0003] Four-wheel drive electric vehicles are equipped with motors at the front and rear, which are generally divided into main drive motors and auxiliary drive motors. In certain situations, the auxiliary drive motor can be in an inoperative state. For example, the auxiliary drive motor is only used during acceleration or special operating conditions, or when the driver requires some high-performance mode. However, when the auxiliary drive motor stops running, the wheels will still drive the auxiliary drive differential, which will drive all the transmission mechanisms and motors connected to it to rotate together, resulting in drag losses. To improve efficiency, a disconnect mechanism is added to the powertrain system of electric vehicles to reduce drag losses.

[0004] Conventional disconnect mechanisms, for example, utilize only a spline connection to disconnect an idler gear supported on a drive shaft. The idler gear has a splined axial projection on its inner side, near the drive shaft. A shift fork typically drives a clutch in a linear, axial reciprocating motion to engage and disengage the spline. However, due to the spatial location of this spline connection and the required engagement length, the disconnect mechanism and the entire power transmission system typically require a significant amount of axial space. Summary of the Invention

[0005] Therefore, the present disclosure aims to solve the above-mentioned problems, and its object is to provide a disconnect module that can reduce the axial length of the entire assembly and facilitate modular assembly.

[0006] According to one aspect of the present invention, a disconnection module is provided for engaging or disengaging a first component rotatable about a first axis with the first axis, the disconnection module comprising:

[0007] a clutch member, rotationally fixedly mounted on the first shaft;

[0008] a driving member axially disposed between the first component and the clutch member and fixedly connected to the first component; wherein the clutch member is capable of axially reciprocating movement to engage and disengage with the driving member, and in an engaged state, the first shaft is capable of rotating together with the first component, and in a disengaged state, the first shaft is capable of rotating independently of the first component; and

[0009] A limiting mechanism is positioned on one of the clutch member and the driving member and can cooperate with the other of the clutch member and the driving member to limit the axial relative position of the clutch member and the driving member.

[0010] One of the purposes of the present invention is to provide a disconnect module that splits a traditional clutch into two components, making full use of the idle axial space in the existing device, and at the same time providing the limiting mechanism so that the clutch member and the drive member will not be dispersed. Therefore, the various components can be packaged into a module and can be directly assembled on the existing power transmission system, reducing time and labor costs.

[0011] The disconnect module according to the invention may also have one or more of the following features, alone or in combination.

[0012] In an exemplary embodiment, the limiting mechanism is capable of sliding in the axial direction relative to the other of the clutch member and the driving member and being stopped thereby.

[0013] In an exemplary embodiment, the limiting mechanism includes: a connecting portion positioned axially on one of the clutch member and the driving member; and a stopping portion capable of stopping the other of the clutch member and the driving member in a disengagement direction.

[0014] In an exemplary embodiment, the limiting mechanism has an annular body, and one of the clutch member and the driving member is provided with a slot for receiving the connecting portion of the annular body.

[0015] In an exemplary embodiment, the other of the clutch member and the driving member is provided with a shoulder to stop a stop portion of the annular body.

[0016] In an exemplary embodiment, the limiting mechanism has a protrusion protruding radially relative to the annular body, and the slot is provided with a hole for accommodating the protrusion.

[0017] In an exemplary embodiment, the shoulder has a diameter that tapers in the axial direction from a side for abutting against the stop portion.

[0018] In an exemplary embodiment, the limiting mechanism further includes a sleeve portion provided between the connecting portion and the stopping portion, and the connecting portion and the stopping portion are formed as flanges protruding from two ends of the sleeve portion respectively.

[0019] In an exemplary embodiment, one of the clutch member and the driving member is fixedly connected to the connecting portion via a fastener, and the other one is provided with a step for abutting against the stop portion.

[0020] In an exemplary embodiment, the connecting portion and the stopping portion protrude in opposite directions.

[0021] In an exemplary embodiment, the limiting mechanism has a closed annular structure, and the stopping portion has a profile that is bent toward the connecting portion.

[0022] In an exemplary embodiment, the disconnect module includes a reset mechanism for applying pressure to the clutch member toward a position disengaged from the driving member, wherein one side of the reset mechanism abuts against the driving member and the other side abuts against the clutch member, and the reset mechanism is located radially inward of the limiting mechanism.

[0023] In an exemplary embodiment, the disconnect module further comprises:

[0024] a shaft sleeve, the shaft sleeve being mounted on the first shaft via a spline, and the clutch member being mounted on the shaft sleeve via a spline;

[0025] an electromagnetic actuator, the electromagnetic actuator including an armature capable of applying an axial force to the clutch member to engage the clutch member with the driving member, wherein the electromagnetic actuator is configured to be fixed to a fixed structure and radially adjacent to the sleeve; and

[0026] The clamping ring is located on a side of the electromagnetic actuator away from the clutch member, with one end radially embedded in the receiving groove provided on the shaft sleeve and the other end axially stopping the electromagnetic actuator.

[0027] In an exemplary embodiment, the disconnect module further comprises a position sensor capable of detecting the axial position of the clutch member, thereby determining the engagement and disengagement states of the disconnect module, wherein the position sensor is configured to be fixed on the fixed structure.

[0028] In an exemplary embodiment, the disconnect module is disposed in a housing, and the fixing structure is the housing or a component fixed to the housing.

[0029] In an exemplary embodiment, the driving member is connected to the first component via a spline, and the bushing axially limits the driving member.

[0030] According to another aspect of the present invention, a power transmission system for a vehicle is provided, comprising: a motor having a drive shaft; a reducer having at least one transmission shaft; and the disconnect module described above, wherein the first shaft comprises the drive shaft or the at least one transmission shaft.

[0031] According to another aspect of the present invention, a vehicle is provided, comprising the power transmission system described above.

[0032] These and other features, aspects and advantages of the present application will become better understood with reference to the following description.The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments of the present application and, together with the description, serve to explain the principles of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] The accompanying drawings are incorporated into and constitute a part of the specification. Together with the general description above and the detailed description of exemplary embodiments and methods given below, the accompanying drawings serve to explain the principles of the invention. Objects and advantages of the invention will become apparent upon studying the following description in light of the accompanying drawings, in which like elements are given the same or similar reference numerals, and in which:

[0034] Figure 1A shows a cross-sectional view of an exemplary embodiment of a disconnect module according to the present invention;

[0035] Figure 1B Shown Figure 1A A partial cross-sectional view of the disconnected module when viewed along the G direction;

[0036] Figure 1C Shown Figure 1A Local details of the disconnected module D;

[0037] Figure 1D Shown Figure 1A The local details DD of the disconnected module;

[0038] Figure 1E Shown Figure 1A A schematic diagram of the connection relationship between the disconnect module and the first component;

[0039] Figure 2A shows a cross-sectional view of another exemplary embodiment of a disconnect module according to the present invention;

[0040] Figure 2B Shown Figure 2A Partial detail of the disconnected module;

[0041] Figure 2C Shown Figure 2A An exemplary embodiment of the limiting mechanism in;

[0042] Figure 2D Shown Figure 2A Another exemplary embodiment of the limiting mechanism in;

[0043] Figure 2E Shown Figure 2A Another exemplary embodiment of the limiting mechanism in .

[0044] In the picture:

[0045] Disconnect module 10 First component 20 Opening 20a First axis 30

[0046] Driving member 11 First engaging portion 11a Boss 11b Internal spline 11c

[0047] Step 11e Process hole 11d

[0048] Clutch 12 Second engagement portion 12a Slot 12b Hole 12c

[0049] Limiting mechanism 13 Annular body 131 Protrusion 132 Connecting portion 13a

[0050] Stopper 13b Sleeve 13c Fastener 13d

[0051] Reset mechanism 14 Electromagnetic actuator 15 Armature 15a Clamping ring 16 Bushing 17

[0052] Position sensor 18 Housing 40 Fixing bolt 50 Bearing 60

[0053] Local details D Local details DD DETAILED DESCRIPTION

[0054] Reference will now be made in detail to exemplary embodiments and methods of the present invention as illustrated in the accompanying drawings, in which like reference numerals designate like or corresponding parts. It should be noted, however, that the invention in its broader aspects is not limited to the specific details, representative apparatus and methods, and illustrative examples shown and described in connection with the exemplary embodiments and methods.

[0055] Unless otherwise defined, the technical or scientific terms used herein shall have the ordinary meaning understood by a person of ordinary skill in the art to which this disclosure belongs. The terms "first," "second," and similar words used in the patent specification and claims of this disclosure do not indicate any order, quantity, or importance, but are merely used to distinguish different components. When the number of components is not specified, the number of components may be one or more; similarly, terms such as "a," "the," and "said" do not necessarily indicate a quantitative limitation. Terms such as "include" or "comprising" mean that the element or object preceding the word includes the elements or objects listed after the word and their equivalents, but do not exclude other elements or objects. Terms such as "upper," "lower," "left," and "right" are only used to indicate the relative orientation relationship of the device when in use or the orientation relationship shown in the drawings. When the absolute position of the described object changes, the relative position relationship may also change accordingly. Unless otherwise explicitly described, the terms "connected," "connected," and the like refer to the relationship in which structures are fixed or attached to each other directly or indirectly through intermediate structures.

[0056] Reference is now made to the drawings, wherein like numerals represent like elements throughout.

[0057] Figure 1A FIG. 1 shows a cross-sectional view of an exemplary embodiment of a disconnect module 10 according to the present invention. The disconnect module 10 according to the present invention preferably has Figure 1A The entire composition is shown in the dotted box.

[0058] from Figure 1A As can be seen, the disconnect module 10 according to the present invention is disposed within the reducer housing 40 and is used to engage or disengage the first component 20, which is rotatable about a first axis 30, with the first axis 30. The illustrated first axis 30 includes the drive shaft and the at least one transmission shaft. The first axis 30 is supported on the housing 40 via bearings 60. The first component 20 is an idler gear in the reducer and is supported on the first axis 30 via needle roller bearings.

[0059] The disconnect module 10 includes a clutch member 12 rotationally fixedly mounted on the first shaft 30; and a drive member 11 axially arranged between the first component 20 and the clutch member 12 and fixedly connected to the first component 20. The clutch member 12 is capable of axial reciprocating motion to engage and disengage with the drive member 11. When engaged, the first shaft 30 rotates with the first component 20; when disengaged, the first shaft 30 rotates independently of the first component 20. In this exemplary embodiment, the drive member 11 has a first engagement portion 11a, and the clutch member 12 has a second engagement portion 12a, the first engagement portion being capable of meshing with the second engagement portion. In this exemplary embodiment, both the first engagement portion 11a and the second engagement portion 12a are configured as face teeth.

[0060] It should be noted that the "rotationally fixed" described herein means that the two components are connected so that they can rotate together, and their mutual movement along the rotational direction (e.g., circumferential direction) is restricted so that they can rotate together. "Rotationally fixed" does not restrict displacement along the direction of the rotational axis. Therefore, the two rotationally fixed components can undergo relative displacement along the direction of the rotational axis. If the displacement along the direction of the rotational axis is also fixed, it can be considered that the two components are completely fixedly connected. In this exemplary embodiment, the clutch member 12 and the first shaft 30 are rotationally fixed by a spline connection; and the drive member 11 and the first component 20 are fixedly connected.

[0061] It should be noted that in the disengaged state, the first shaft 30 can rotate independently of the first component 20 , which means that the motion state of the first shaft 30 is unrelated to the motion state of the first component 20 , but does not mean that there is no connection between them.

[0062] The disconnect module 10 of the present invention further includes a limiting mechanism 13. Figure 1A In an exemplary embodiment, the limiting mechanism 13 is positioned on the clutch member 12 and can cooperate with the driving member 11 to limit the axial relative position of the clutch member 12 and the driving member 11.

[0063] In accordance with Figure 1A In an exemplary embodiment, the limiting mechanism 13 can slide axially relative to the driving member 11 and be stopped by it, thereby allowing the axial reciprocating motion of the clutch member 12 and being able to limit the axial relative position of the clutch member 12 and the driving member 11 when the clutch member 12 is disengaged.

[0064] The disconnect module 10 of the present invention splits the traditional clutch into two components, namely a driving member 11 and a clutch member 12, wherein the driving member 11 is fixedly connected to the first component 20, and the clutch member 12 is configured to engage and disengage with the driving member 11, thereby utilizing the driving member 11 to transmit the driving force from the first component 20. Since the driving member 11 can be arranged closely in space with the first component 20, the idle axial space in the existing device is fully utilized, thereby advantageously reducing the axial length of the entire assembly compared to the traditional clutch. At the same time, the present invention provides the limiting mechanism 13 to limit the axial relative position of the clutch member 12 and the driving member 11, so that the clutch member 12 and the driving member 11 will not disperse. Therefore, the disconnect module 10 of the present invention also has the advantage of modularity. The various components can be packaged into a module and provided, so that it can be directly assembled on the existing power transmission system, reducing time and labor costs.

[0065] In addition, compared with using bearings to support and position the driving member 11, using the limiting mechanism 13 for axial limiting according to the present invention is more cost-effective, because the bearings require very good concentricity and require additional time and manpower for concentricity adjustment.

[0066] Figure 1B Shown Figure 1A A partial cross-sectional view of the disconnect module 10 when viewed along the G direction. Figure 1C and 1D Shown respectively Figure 1A Partial details D and DD of the disconnect module 10 in FIG.

[0067] Combine Figures 1B to 1D The structure of the limiting mechanism 13 and the connection relationship between the limiting mechanism 13, the clutch member 12 and the driving member 11 can be clearly seen.

[0068] Figure 1B It is clearly shown that the limiting mechanism 13 has an annular main body 131 and a protrusion 132 protruding radially relative to the annular main body 131 .

[0069] Figure 1D The clutch member 12 is shown as having a slot 12b, which is designed to receive the radially outer side of the annular body 131. This radially outer side forms the connection portion 13a of the limiting mechanism 13, which is axially positioned on the clutch member 12. The radially inner side of the annular body 131 protrudes beyond the slot 12b, forming a stop portion 13b of the limiting mechanism 13, which can stop the driver 11 in the disengagement direction. Correspondingly, the driver 11 has a shoulder 11b to stop the stop portion 13b. The shoulder 11b has a diameter that tapers axially from the side that abuts the stop portion 13b, making it easy to install the stop portion 13b within the shoulder 11b but difficult to remove.

[0070] It should be noted that the limiting mechanism 13 shown here has a circular cross section, but it is also conceivable that the cross section thereof may be rectangular, which can also achieve the purpose of the present invention.

[0071] Figure 1B and 1C It is shown that the clutch member 12 is provided with a hole 12c in the clamping groove 12b, and the hole 12c is used to accommodate the protrusion 132 of the limiting mechanism 13 to prevent the limiting mechanism 13 from rotating.

[0072] Figure 1E Shown Figure 1A Schematic diagram of the connection between the disconnect module 10 and the first component 20 in FIG. The driver 11 has a plurality of openings 20a evenly distributed along the circumference on the side facing the first component 20. The first component 20 has a plurality of corresponding openings (not shown) evenly distributed along the circumference on the side facing the driver 11. The openings 20a are connected to the corresponding openings by bolts 21 to achieve a fixed connection between the driver 11 and the first component 20. Other connection methods may also be used within the scope of the present invention to achieve a fixed connection between the driver 11 and the clutch component 12, such as riveting or spline connection.

[0073] from Figure 1B and 1C It can be seen that the disconnect module 10 includes a reset mechanism 14 for applying pressure to the clutch 12 toward a position disengaged from the drive member 11, wherein one side of the reset mechanism 14 abuts against the drive member 11 and the other side abuts against the clutch 12, and the reset mechanism is located radially inward of the limiting mechanism 13. The reset mechanism 14 is shown here as a disc spring, i.e., a Belleville spring. This type of spring has a short axial deformation length and saves space. The axial deformation length of the disc spring is easier to match with the meshing length of the end face teeth, thereby more effectively achieving the purpose of the present invention. Other types of reset mechanisms, such as wave springs, can also be used within the scope of the present invention to achieve pressure on the clutch 12.

[0074] In addition Figure 1A As can be seen in the figure, the disconnect module 10 further includes a sleeve 17 , which is mounted on the first shaft 30 via a spline, and the clutch member 12 is mounted on the sleeve 17 via a spline.

[0075] The disconnect module 10 further includes an electromagnetic actuator 15 , which includes an armature 15 a capable of applying an axial force to the clutch member 12 to engage the clutch member 12 with the drive member 11 , wherein the electromagnetic actuator 15 is configured to be fixed on the housing 40 and radially adjacent to the sleeve 17 .

[0076] The disconnect module 10 further includes a retaining ring 16 , which is located on a side of the electromagnetic actuator 15 away from the clutch member 12 , one end of which is radially embedded in a receiving groove provided on the shaft sleeve 17 , and the other end of which stops the electromagnetic actuator 15 axially.

[0077] By providing the sleeve 17, the electromagnetic actuator 15 and the retaining ring 16, the axial reciprocating motion of the clutch member 12 is advantageously achieved, and the various components are also allowed to be packaged into a module, so that they can be directly assembled on the existing power transmission system, reducing time and labor costs.

[0078] from Figure 1A It can be seen that the disconnect module 10 further includes a position sensor 18 capable of detecting the axial position of the clutch member 12 , thereby determining the engagement and disengagement states of the disconnect module 10 , wherein the position sensor is configured to be fixed on the housing 40 .

[0079] Figure 2A A cross-sectional view of another exemplary embodiment of a disconnect module 10 according to the invention is shown. Figure 1A The difference compared with the exemplary embodiment of FIG. 1 is the structure of the limiting mechanism 13 and the connection between the first component 20, the driving member 11, the clutch member 12 and the limiting mechanism 13. Figure 2B Shown Figure 2A A detailed view of the disconnected module.

[0080] As can be seen from the figure, the limiting mechanism 13 includes a connecting portion 13a positioned axially on the clutch member 12, a stopper 13b that stops the driver 11 in the disengagement direction, and a sleeve portion 13c disposed between the connecting portion 13a and the stopper 13b. The connecting portion 13a and the stopper 13b are formed as flanges that protrude in opposite directions from the ends of the sleeve portion 13c. Alternatively, the connecting portion 13a and the stopper 13b may protrude in the same direction from the ends of the sleeve portion 13c.

[0081] Here, the clutch member 12 is fixedly connected to the connecting portion 13a via a fastener 13d. The driving member 11 is provided with a process hole 11d for allowing the fastener 13d to pass through for installation. In addition, the driving member 11 is provided with a step 11e for abutting the stop portion 13b.

[0082] In accordance with Figure 2A In the disconnection module 10, the limiting mechanism 13 may have a notched or closed annular structure. Figures 2C to 2E Different exemplary embodiments of the limiting mechanism 13 are shown in each case.

[0083] Figure 2CThe limiting mechanism 13 has a closed annular structure, and the stop portion 13b is preferably configured to have a profile curved toward the connecting portion 13a. At this time, the step 11e of the driving member 11 is provided with an inclined shoulder to ensure that the stop portion 13b is easily pushed into the step 11e but not easily removed from the step 11e.

[0084] Figure 2D The limiting mechanism 13 is an annular structure with a gap, so that the stopper 13b can be installed in the step 11e of the driving member 11 by breaking the annular structure and elastically deforming it.

[0085] Figure 2E The limiting mechanism 13 is an annular structure with multiple gaps, or in other words, the limiting mechanism 13 is composed of multiple segments. The installation of the entire limiting mechanism 13 can be simply and conveniently achieved by installing these segments respectively.

[0086] Here, the driver 11 of the disconnect module 10 is splined to the first component 20. The first component 20 is provided with an external spline, and the driver 11 is provided with an internal spline 11c that mates with the external spline. A bushing 17 precisely limits the driver 11 in the axial direction, ensuring a fixed connection between the driver 11 and the first component 20. This means that the driver 11 and the first component 20 can rotate together and there is no relative motion along the axis of rotation. The bushing 17 serves multiple purposes, not only supporting the axial reciprocating motion of the clutch 12 but also providing axial positioning for the driver 11 and the electromagnetic actuator 15. This facilitates the modular design of the disconnect module 10 and makes it easier to install and use.

[0087] In another aspect, the present invention provides a power transmission system comprising: a motor (not shown) having a drive shaft; a reducer having at least one transmission shaft; a disconnect module 10, wherein a first shaft 30 shown includes the drive shaft and the at least one transmission shaft; and a first component 20 being a gear supported on the first shaft.

[0088] It should be understood that the powertrain system refers to a device that operates via electric drive. For example, a motor, as a driving mechanism, can convert input electrical energy into rotational mechanical energy. A reducer is mechanically coupled to the motor to regulate the torque and speed generated by the motor and further transmit it to the vehicle's wheels.

[0089] At least one transmission shaft of the speed reducer may include a speed reducer input shaft and an intermediate shaft arranged parallel to each other. The speed reducer input shaft may be provided with an input gear, which may be integrally formed on and coaxially disposed with the speed reducer input shaft. The intermediate shaft may be provided with a first intermediate gear and a second intermediate gear. The first intermediate gear is in driving engagement with the input gear. The second intermediate gear is in driving engagement with a driven gear connected to the differential. This achieves a two-stage helical gear parallel shaft speed reducer arrangement from the speed reducer input shaft to the differential.

[0090] The operation mode of the disconnect module 10 of the present invention in the power transmission system is as follows: when engagement is required, the armature 15a is energized and pushes the clutch member 12 to overcome the reaction force of the reset mechanism 14 to achieve engagement with the drive member 11. In this engaged state, the driving force / torque from the motor can be transmitted to the differential and the wheels connected thereto via the first shaft 30; conversely, when disengagement is required, the armature 15a is de-energized and retracted, and the reset mechanism 14 pushes the clutch member 12 to disengage from the drive member 11, and the driving force / torque transmission is disconnected. Even if the wheel still drives the auxiliary drive differential to operate, the rotation of the wheel drives as few transmission mechanisms as possible, thereby reducing drag loss.

[0091] The vehicle provided by the present invention includes a powertrain system as described above. The vehicle can be an electrified vehicle, such as a battery electric vehicle (BEV), a hybrid electric vehicle (HEV), a plug-in hybrid electric vehicle (PHEV), or a range-extended electric vehicle (REEV). The vehicle can also be a hydrogen-powered vehicle. It should be understood that the vehicle of the present invention also has the advantages described above with respect to the disconnect module and powertrain system.

[0092] While exemplary embodiments have been described in the foregoing description, it should be noted that numerous variations are possible. Furthermore, it should be noted that the exemplary embodiments are merely illustrative and should not be construed as limiting in any way the scope of protection, applicability, or device configuration of the exemplary embodiments. Rather, the overview and description of the embodiments are intended to provide guidance to those skilled in the art for implementing at least one exemplary embodiment, wherein various modifications may be made to the functionality and layout of the components described without departing from the scope of protection defined by the claims and their equivalent feature combinations.

Claims

1. A disconnect module (10) for engaging or disengaging a first component (20) rotatable about a first axis (30) with the first axis (30), the disconnect module (10) comprising: a clutch member (12) rotatably mounted on the first shaft (30); A driving member (11) is axially arranged between a first component (20) and a clutch member (12) and fixedly connected to the first component (20); wherein the clutch member (12) is capable of axially reciprocating movement to engage and disengage with the driving member (11); in an engaged state, the first shaft (30) is capable of rotating together with the first component (20); in a disengaged state, the first shaft (30) is capable of rotating independently of the first component (20); and A limiting mechanism (13) is positioned on one of the clutch member (12) and the driving member (11), and is capable of cooperating with the other of the clutch member (12) and the driving member (11) to limit the axial relative position of the clutch member (12) and the driving member (11).

2. The disconnect module (10) according to claim 1, wherein The limiting mechanism (13) can slide in the axial direction relative to the other of the clutch member (12) and the driving member (11) and be stopped by the other.

3. The disconnect module (10) according to claim 1, wherein The limiting mechanism (13) comprises: a connecting portion (13a) positioned axially on one of the clutch member (12) and the driving member (11); and a stopping portion (13b) capable of stopping the other of the clutch member (12) and the driving member (11) in a disengagement direction.

4. The disconnect module (10) according to claim 3, wherein The limiting mechanism (13) has an annular main body (131), and one of the clutch member (12) and the driving member (11) is provided with a slot for receiving the connecting portion (13a) of the annular main body.

5. The disconnect module (10) according to claim 4, wherein The other of the clutch member (12) and the driving member (11) is provided with a shoulder to stop the stopping portion (13b) of the annular body (131).

6. The disconnect module (10) according to claim 4, wherein The limiting mechanism (13) has a protrusion (132) protruding radially relative to the annular body (131), and a hole for accommodating the protrusion (132) is provided in the clamping groove.

7. The disconnect module (10) according to claim 5, wherein The shoulder has a diameter that tapers in the axial direction from the side for abutting against the stopper (13b).

8. The disconnect module (10) according to claim 3, wherein The limiting mechanism (13) further includes a sleeve portion (13c) arranged between the connecting portion (13a) and the stopping portion (13b), and the connecting portion (13a) and the stopping portion (13b) are formed as flanges protruding from both ends of the sleeve portion (13c).

9. The disconnect module (10) according to claim 8, wherein One of the clutch member (12) and the driving member (11) is fixedly connected to the connecting portion (13a) via a fastener, and the other is provided with a step for abutting against the stop portion (13b).

10. The disconnect module (10) according to claim 8, wherein The connecting portion (13a) and the stopping portion (13b) protrude in opposite directions.

11. The disconnect module (10) according to claim 8, wherein The limiting mechanism (13) has a closed annular structure, and the stop portion (13b) has a profile that bends toward the connecting portion (13a).

12. The disconnect module (10) according to claim 1, wherein The disconnection module (10) includes a reset mechanism (14) for applying pressure to the clutch member (12) toward a position where the clutch member (12) is disengaged from the driving member (11), wherein one side of the reset mechanism (14) abuts against the driving member (11) and the other side abuts against the clutch member (12), and the reset mechanism is located radially inward of the limiting mechanism (13).

13. The disconnect module (10) according to claim 12, wherein The disconnection module (10) further comprises: a shaft sleeve (17), the shaft sleeve (17) being mounted on the first shaft (30) via a spline, and the clutch member (12) being mounted on the shaft sleeve (17) via a spline; an electromagnetic actuator (15), the electromagnetic actuator comprising an armature (15a), the armature being capable of applying an axial force to the clutch member (12) to engage the clutch member (12) with the drive member (11), wherein the electromagnetic actuator (15) is arranged to be fixed to a fixed structure and radially adjacent to the sleeve (17); and A clamping ring (16) is located on a side of the electromagnetic actuator (15) away from the clutch member (12), one end of which is radially embedded in a receiving groove provided on the shaft sleeve (17), and the other end of which stops the electromagnetic actuator (15) in the axial direction.

14. Disconnection module (10) according to claim 13, wherein The disconnect module (10) further comprises a position sensor (18) capable of detecting the axial position of the clutch member (12) to determine the engagement and disengagement state of the disconnect module (10), wherein the position sensor is arranged to be fixed on the fixed structure.

15. The disconnect module (10) according to claim 13, wherein The disconnect module (10) is arranged in a housing (40), and the fixing structure is the housing (40) or a component fixed to the housing (40).

16. The disconnect module (10) according to claim 13, wherein The driving member (11) is connected to the first member (20) via a spline, and the shaft sleeve (17) axially limits the driving member (11).

17. A power transmission system for a vehicle, comprising: a motor having a drive shaft; a speed reducer having at least one transmission shaft; as well as The disconnect module (10) according to any one of claims 1 to 16, wherein the first shaft (30) comprises the drive shaft or the at least one transmission shaft.

18. A vehicle comprising the power transmission system according to claim 17.

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