CN117450184A

CN117450184A - Disconnecting device and control method of disconnecting device

Info

Publication number: CN117450184A
Application number: CN202311774477.0A
Authority: CN
Inventors: 包轩铭; 杨泽宇; 刘力玮; 高凯歌; 赵良森; 刘宁; 刘佩龙; 李玉芳; 陈思雯
Original assignee: FAW Group Corp
Current assignee: FAW Group Corp
Priority date: 2023-12-22
Filing date: 2023-12-22
Publication date: 2024-01-26
Anticipated expiration: 2043-12-22
Also published as: CN117450184B

Abstract

The invention provides a disconnecting device and a control method of the disconnecting device, and relates to the field of vehicles. The electromagnet and the limiting member are arranged on the first disc member, the limiting member can move relative to the first disc member, the sliding member is in sliding connection with the second disc member, the sliding member is provided with a limiting groove, the sliding member is magnetic, the first disc member is provided with an abutting groove, the polarity of the electromagnet can be adjusted, so that part of the sliding member can move between the inner part and the outer part of the abutting groove, and part of the limiting member can move between the inner part and the outer part of the limiting groove; when the part of the limiting member is positioned in the limiting groove, two opposite sides of the part of the sliding member in the circumferential direction are abutted with the groove wall of the abutting groove, and two opposite side walls of the limiting groove in the radial direction are abutted with the part of the limiting member. The disconnecting device can solve the problem that the electromagnet is required to be continuously electrified under the combined working condition and the disconnecting working condition of the disconnecting device, and the electric energy loss is large.

Description

Disconnecting device and control method of disconnecting device

Technical Field

The present disclosure relates to the field of vehicle technologies, and in particular, to a disconnection device and a control method of the disconnection device.

Background

Along with the rapid popularization of electric vehicles, pure electric drive systems are rapidly developed in technology, and particularly, for high-performance electric vehicles, front and rear sets of electric drive systems are adopted, so that the electric vehicles are guaranteed to have higher dynamic performance and four-wheel drive performance can be achieved. However, in the electric driving system, a direct driving device is mostly adopted, and the wheels and the motor end cannot be decoupled and cannot adapt to the working condition with low acceleration requirement and the working condition without four driving, so that a disconnecting device is necessary between the wheels and the motor end.

Most of the existing disconnecting devices are axial disconnecting devices, are arranged at the output end of the electric drive system and the input end of the half shaft, have large axial distance, have complex structures, are extremely unfavorable for the arrangement of the whole vehicle, and especially for the rear electric drive system with high-performance axial double motors, the traditional axial disconnecting devices cannot meet the arrangement requirement of the whole vehicle. Based on the above, the radial direction disconnecting device starts to appear, and the axial distance of the radial direction disconnecting device is small, so that the requirement of the whole vehicle arrangement can be met. However, the radial direction disconnecting device is controlled by an electromagnet, and the electromagnet is required to continuously work under the combined working condition and the disconnecting working condition, so that the electric energy loss is large.

Disclosure of Invention

In view of this, the application provides a disconnect device and a control method of the disconnect device to solve the problem that the current disconnect device needs the electromagnet to work continuously under both the combined working condition and the disconnected working condition, and the electric energy loss is larger.

According to an aspect of the present application, there is provided a disconnecting device comprising a first disc member, a second disc member, a sliding member, an electromagnet and a limiting member, one of the first disc member and the second disc member being for connection with a half shaft, the other of the first disc member and the second disc member being for connection with an electric drive system;

the electromagnet and the limiting member are both arranged on the first disc member, the limiting member can move relative to the first disc member, the sliding member is slidably connected with the second disc member, the sliding member is provided with a limiting groove and is magnetic, the first disc member is provided with an abutting groove, the polarity of the electromagnet can be adjusted, so that part of the sliding member can move between the inner part and the outer part of the abutting groove, and part of the limiting member can move between the inner part and the outer part of the limiting groove;

When the portion of the sliding member is located inside the abutment groove and the portion of the stopper member is located inside the stopper groove, both sides of the portion of the sliding member opposite to each other in the circumferential direction are abutted against the groove wall of the abutment groove, and both side walls of the stopper groove opposite in the radial direction are abutted against the portion of the stopper member.

Preferably, the first disc member includes a main body portion and an extension portion surrounding the main body portion for one revolution, the second disc member is provided on the main body portion, the electromagnet and the stopper member are both provided on the extension portion, and the stopper groove is recessed from a side of the extension portion facing the main body portion toward an inside of the extension portion in the radial direction.

Preferably, the disconnecting device comprises a first elastic member, the first elastic member is fixed on the extension portion, the middle portion of the limiting member is hinged to the extension portion, a first end of the limiting member is connected with the first elastic member, the first end of the limiting member can be attracted by the electromagnet, a second end of the limiting member protrudes towards the main body portion relative to the electromagnet, the second end of the limiting member can extend into the limiting groove, and the first elastic member is in an extending state.

Preferably, the limiting member comprises a connecting portion, a connecting portion and a limiting portion which are sequentially connected, the connecting portion is connected with the first elastic member, the connecting portion is hinged with the first disc member, and at least part of the limiting portion can extend into the limiting groove;

when the sliding member moves towards the electromagnet, the sliding member can be abutted with the connecting part to drive the limiting member to rotate.

Preferably, the disconnecting device comprises a plurality of electromagnets and a plurality of sliding members, the plurality of electromagnets are arranged on the extending part at intervals, the plurality of sliding members are arranged on the second disc member at intervals, the plurality of electromagnets are in one-to-one correspondence with the plurality of sliding members, and each sliding member is correspondingly provided with the abutting groove.

Preferably, each electromagnet is correspondingly provided with two limiting members, and the two limiting members are respectively arranged on two sides of the electromagnet in the circumferential direction.

Preferably, the second disc member is provided with a sliding groove, at least part of the sliding member is located inside the sliding groove, and the sliding groove communicates with the abutment groove when the position of the electromagnet in the circumferential direction corresponds to the position of the sliding member in the circumferential direction.

Preferably, the sliding member includes a slider and a locking block, the slider is connected with one side of the locking block in the axial direction, at least part of the locking block can extend into the abutting groove, and the slider is provided with the limiting groove.

Preferably, the slide groove includes a first groove portion formed to be recessed from a side of the second disk member facing away from the main body portion toward the main body portion, and a second groove portion formed to be recessed from a bottom of the first groove portion toward the main body portion;

the sliding block is located in the first groove part, the locking block is located in the second groove part, and the second groove part can be communicated with the abutting groove.

Preferably, the disconnecting device further includes a second elastic member that is stretchable in a radial direction, one end of the second elastic member is connected to a groove wall of the second groove portion, and a second end of the second elastic member is connected to the sliding member.

Preferably, the disconnecting means comprises a first detector provided at an end of the abutment groove remote from the second disc member, an end of the locking block facing the electromagnet being capable of abutment with the first detector.

Preferably, the disconnecting device further comprises a second detector, the second detector is arranged at one end of the sliding groove far away from the electromagnet, and one end of the locking block far away from the extension part can be abutted with the second detector.

Preferably, the first disc member further includes a connection block, the connection blocks are disposed between any two adjacent electromagnets of the plurality of electromagnets, transition surfaces are formed on two sides of the connection block in the circumferential direction, the transition surfaces are smooth curved surfaces, and the transition surfaces protrude toward the main body portion.

According to another aspect of the present application, there is provided a control method of a disconnecting device, the control method of the disconnecting device acting on a disconnecting device, the disconnecting device comprising a first disc member, a second disc member, a limiting member, an electromagnet and a sliding member, one of the first disc member and the second disc member being for connection with a half shaft, the other of the first disc member and the second disc member being for connection with an electric drive system; the electromagnet and the limiting member are both arranged on the first disc member, the limiting member can move relative to the first disc member, the sliding member is slidably connected with the second disc member, the sliding member is provided with a limiting groove and is magnetic, the first disc member is provided with an abutting groove, the polarity of the electromagnet can be adjusted, so that part of the sliding member can move between the inside and the outside of the abutting groove, and part of the limiting member can move between the inside and the outside of the limiting groove;

The control method of the disconnecting device comprises the following steps:

a first acquisition step: acquiring a connection state of the first disk member and the second disk member;

a first judging step: and carrying out first judgment on whether the connection state of the first disc member and the second disc member is the same as the expected connection state, controlling the disconnecting device to keep an initial state or the electromagnet to execute the action of changing the connection state based on the result of the first judgment, and completing the action of changing the connection state by the electromagnet, wherein the electromagnet is powered off.

Preferably, the control method of the disconnection device further includes:

a second acquisition step: acquiring the connection state of the first disc member and the second disc member again after the disconnecting device performs the action of changing the connection state for a predetermined time;

and a second judging step: and performing second judgment on whether the acquired connection state of the first disc member and the second disc member is the same as the expected connection state, and controlling the electromagnet to be powered off or the electric drive system to execute adjustment operation based on the result of the second judgment.

Preferably, the disconnecting device further comprises a first detector and a second detector, the second disc member is provided with a sliding groove, at least part of the sliding member is positioned in the sliding groove, the first detector is arranged at one end of the abutting groove away from the second disc member, and the second detector is arranged at one end of the sliding groove away from the electromagnet;

The obtaining of the connection state of the first disk member and the second disk member includes:

when the first detector detects the sliding member and the second detector does not detect the sliding member, the first disk member and the second disk member are in a combined state;

when the first detector does not detect the sliding member, the second detector detects the sliding member, the first disk member and the second disk member are in a disconnected state;

at least one of the first detector and the second detector fails when neither the first detector nor the second detector detects the sliding member or both detect the sliding member.

Preferably, the first determination as to whether the connection state of the first disc member and the second disc member is the same as the intended connection state includes:

when the result of the first judgment indicates that the expected connection state is the same as the connection state of the first disc member and the second disc member, the disconnecting means maintains an initial state;

when the result of the first judgment indicates that the expected connection state is different from the connection state of the first disc member and the second disc member, the electromagnet performs an action of changing the connection state.

Preferably, the electromagnet is deenergized when the result of the second determination indicates that the expected connection state is the same as the connection state of the first disc member and the second disc member;

and when the result of the second judgment shows that the expected connection state is different from the connection state of the first disc member and the second disc member, performing third judgment on whether the frequency of the rotation speed adjustment of the electric drive system is smaller than the expected frequency of adjustment, and controlling the electric drive system to adjust the rotation speed or the electromagnet to be powered off based on the result of the third judgment.

Preferably, making a third determination as to whether the number of times the electric drive system adjusts the rotational speed is less than an expected number of adjustments, and controlling the electric drive system to adjust the rotational speed or the electromagnet to be powered off based on a result of the third determination includes:

when the result of the third judgment indicates that the number of times of adjusting the rotating speed of the electric drive system is greater than or equal to the expected adjustment number of times, the electromagnet is powered off;

and when the result of the third judgment indicates that the number of times of adjusting the rotating speed of the electric drive system is smaller than the expected number of times of adjusting, the electric drive system adjusts the rotating speed, so that the action of changing the connection state is kept to be executed for the electromagnet, and then the second judgment step is executed.

In the use of the disconnecting device of the application, when the first disc member is required to be combined with the second disc member, the electromagnet is electrified, the polarity of the electromagnet is opposite to that of the sliding member, the electromagnet attracts the sliding member to enable the sliding member to move towards the electromagnet, a part of the sliding member stretches into the abutting groove, two sides of the sliding member opposite to each other in the circumferential direction are abutted with the groove walls of the abutting groove, and therefore the fixing of the sliding member in the radial direction is achieved through the abutting groove on the first disc member. And part of the limiting member extends into the limiting groove, and two opposite side walls of the limiting groove in the radial direction are abutted with the limiting member. In this way, the stopper member can realize the stopper of the slide member in the radial direction. In this way, the fixing of the sliding member is achieved through the abutment groove and the limiting member, so that the relative fixing of the first disc member and the second disc member is achieved, and torque can be transmitted between the first disc member and the second disc member. At this time, the electromagnet is powered off, the abutting groove and the limiting member can still keep fixing the sliding member, and torque can still be transmitted between the first disc member and the second disc member.

When the first disc member and the second disc member are required to be disconnected, the electromagnet is electrified, the polarity of the electromagnet is the same as that of the sliding member, the electromagnet repels the sliding member, the limiting member moves out of the limiting groove, and the sliding member moves out of the abutting groove. At this time, the abutment groove and the stopper member cannot restrict the slide member, and torque cannot be transmitted between the first disk member and the second disk member. The electromagnet is powered off, the abutting groove and the limiting member still cannot limit the sliding member, and torque still cannot be transmitted between the first disc member and the second disc member.

Thus, when the disconnecting device of the present application is used, the electromagnet is energized only when the engaging operation and the disconnecting operation are performed. After the electromagnet is powered off, the first disc member and the second disc member can still keep a combined state or a disconnected state, the electromagnet does not need to be continuously electrified, and the loss of electric energy is reduced.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are needed in the embodiments will be briefly described below, it being understood that the following drawings only illustrate some embodiments of the present application and therefore should not be considered limiting the scope, and that other related drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

Fig. 1 shows a schematic view of a first disc member and a second disc member of an embodiment of the present invention in a combined state;

fig. 2 shows an enlarged view of a portion a in fig. 1;

fig. 3 shows a schematic structural view of a first disc member;

FIG. 4 shows a schematic structural view of a second disc member;

FIG. 5 shows a schematic structural view of a stop member;

fig. 6 shows a schematic structural view of a sliding member;

fig. 7 shows a schematic view of a first disc member and a second disc member of an embodiment of the present invention in a self-disconnecting to bonding switching state;

fig. 8 shows an enlarged view of part B of fig. 7;

FIG. 9 shows a schematic view of a first disc member and a second disc member of an embodiment of the present invention in a disconnected state;

fig. 10 shows an enlarged view of the portion B in fig. 9;

fig. 11 shows a flow chart of a control method of the disconnection device.

Icon: 1-a first disc member; 11-a body portion; 12-extension; 121-an abutment groove; 13-connecting blocks; 131-transition surface; 14-a first shaft; 15-second axis; 16-a first detector; 17-a first elastic member; 21-a second disc member; 211-a sliding groove; 2111-a first groove portion; 2112-a second groove portion; 22-an output flange; 23-a second detector; 24-a second elastic member; 3-a limiting member; 31-a junction; 32-a connection; 33-a limit part; 4-electromagnet; 5-a sliding member; 51-a slider; 511-a limit groove; 52-locking blocks.

Detailed Description

The following detailed description is provided to assist the reader in obtaining a thorough understanding of the methods, apparatus, and/or systems described herein. However, various changes, modifications, and equivalents of the methods, apparatuses, and/or systems described herein will be apparent after an understanding of the present disclosure. For example, the order of operations described herein is merely an example, and is not limited to the order set forth herein, but rather, obvious variations may be made upon an understanding of the present disclosure, other than operations that must occur in a specific order. In addition, descriptions of features known in the art may be omitted for the sake of clarity and conciseness.

The features described herein may be embodied in different forms and should not be construed as limited to the examples described herein. Rather, the examples described herein have been provided solely to illustrate some of the many possible ways of implementing the methods, devices, and/or systems described herein that will be apparent after a review of the disclosure of the present application.

In the entire specification, when an element (such as a layer, region or substrate) is described as being "on", "connected to", "bonded to", "over" or "covering" another element, it may be directly "on", "connected to", "bonded to", "over" or "covering" another element or there may be one or more other elements interposed therebetween. In contrast, when an element is referred to as being "directly on," directly connected to, "or" directly coupled to, "another element, directly on," or "directly covering" the other element, there may be no other element intervening therebetween.

As used herein, the term "and/or" includes any one of the listed items of interest and any combination of any two or more.

Although terms such as "first," "second," and "third" may be used herein to describe various elements, components, regions, layers or sections, these elements, components, regions, layers or sections should not be limited by these terms. Rather, these terms are only used to distinguish one element, component, region, layer or section from another element, component, region, layer or section. Thus, a first member, component, region, layer or section discussed in examples described herein could also be termed a second member, component, region, layer or section without departing from the teachings of the examples.

For ease of description, spatially relative terms such as "above … …," "upper," "below … …," and "lower" may be used herein to describe one element's relationship to another element as illustrated in the figures. Such spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if the device in the figures is turned over, elements described as "above" or "upper" relative to another element would then be oriented "below" or "lower" relative to the other element. Thus, the term "above … …" includes both orientations "above … …" and "below … …" depending on the spatial orientation of the device. The device may also be otherwise positioned (e.g., rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.

The terminology used herein is for the purpose of describing various examples only and is not intended to be limiting of the disclosure. Singular forms also are intended to include plural forms unless the context clearly indicates otherwise. The terms "comprises," "comprising," and "having" are intended to specify the presence of stated features, integers, operations, elements, and/or groups thereof, but do not preclude the presence or addition of one or more other features, integers, operations, elements, and/or groups thereof.

Variations from the shapes of the illustrations as a result, of manufacturing techniques and/or tolerances, are to be expected. Accordingly, the examples described herein are not limited to the particular shapes shown in the drawings, but include changes in shapes that occur during manufacture.

The features of the examples described herein may be combined in various ways that will be apparent after an understanding of the disclosure of the present application. Further, while the examples described herein have a variety of configurations, other configurations are possible as will be apparent after an understanding of the present disclosure.

According to an aspect of the present application, there is provided a disconnecting device, as shown in fig. 1 to 10, including a first disc member 1, a second disc member 21, a sliding member 5, an electromagnet 4, and a stopper member 3, one of the first disc member 1 and the second disc member 21 being for connection with a half shaft (here, the half shaft is a member connected with a wheel, and when the first disc member 1 and the second disc member 21 are combined, power of an electric drive system can be transmitted to the wheel through the first disc member 1, the second disc member 21, and the half shaft), and the other of the first disc member 1 and the second disc member 21 being for connection with the electric drive system; the electromagnet 4 and the limit member 3 are both arranged on the first disc member 1, the limit member 3 can move relative to the first disc member 1, the slide member 5 is in sliding connection with the second disc member 21, the slide member 5 is provided with a limit groove 511, the slide member 5 is magnetic, the first disc member 1 is provided with an abutting groove 121, the polarity of the electromagnet 4 can be adjusted, so that part of the slide member 5 can move from between the inner part and the outer part of the abutting groove 121, and part of the limit member 3 can move from between the inner part and the outer part of the limit groove 511;

When a portion of the slide member 5 is located inside the abutment groove 121 and a portion of the stopper member 3 is located inside the stopper groove 511, both sides of the slide member 5, which are opposite to each other in the circumferential direction, abut against the groove wall of the abutment groove 121, and both side walls of the stopper groove 511, which are opposite in the radial direction, abut against the stopper portion 33 of the stopper member 3, which is described below. Furthermore, a further explanation is needed here: the groove portions such as the abutment groove 121 and the stopper groove 511 may be understood as being formed by partially cutting out the first disk member 1 and the slide member 5, the inside of the groove portions may be understood as a space occupied by the cut-out portions, and the outside of the groove portions may be a space outside the space occupied by the cut-out portions.

In the use of the disconnecting device of the present application, when the first disc member 1 and the second disc member 21 are required to be combined, the electromagnet 4 is energized, and the polarity of the electromagnet 4 is opposite to that of the slide member 5, the electromagnet 4 attracts the slide member 5 so that the slide member 5 moves toward the electromagnet 4, a portion of the slide member 5 protrudes into the abutment groove 121, both sides of the slide member 5 opposite to each other in the circumferential direction abut against the groove wall of the abutment groove 121, and thus, fixation of the slide member 5 in the radial direction is achieved by the abutment groove 121 on the first disc member 1. The part of the limiting member 3 extends into the limiting groove 511, and two opposite side walls of the limiting groove 511 in the radial direction are abutted against the limiting member 3. In this way, the stopper member 3 can realize the stopper of the slide member 5 in the radial direction. In this way, the fixing of the slide member 5 is achieved by the abutment groove 121 and the stopper member 3, thereby achieving the relative fixing of the first disk member 1 and the second disk member 21, and torque can be transmitted between the first disk member 1 and the second disk member 21. At this time, the electromagnet 4 is deenergized, the abutment groove 121 and the stopper member 3 can remain fixed to the slide member 5, and torque can still be transmitted between the first disk member 1 and the second disk member 21.

When it is desired to disconnect the first disc member 1 from the second disc member 21, the electromagnet 4 is energized (the current flow here is in the opposite direction to that described above) so that the polarity of the electromagnet 4 is the same as that of the slide member 5, the electromagnet 4 repels the slide member 5, the stop member 3 moves out of the stop slot 511, and the slide member 5 moves out of the abutment slot 121. At this time, the abutment groove 121 and the stopper member 3 cannot regulate the slide member 5, and torque cannot be transmitted between the first disk member 1 and the second disk member 21. The electromagnet 4 is powered off, the abutment groove 121 and the limiting member 3 still cannot limit the sliding member 5, and torque still cannot be transmitted between the first disc member 1 and the second disc member 21.

As described above, when the disconnecting device of the present application is used, the electromagnet 4 is energized only when the coupling operation and the disconnecting operation are performed. After the electromagnet 4 is powered off, the first disc member 1 and the second disc member 21 can still maintain the combined state or the disconnected state, the electromagnet 4 does not need to be continuously powered on, and the loss of electric energy is reduced.

Alternatively, the first disc member 1 may be connected to an electric drive system, in which case the second disc member 21 is connected to the half shaft. The first disc member 1 may also be connected to a half shaft, in which case the second disc member 21 is connected to an electric drive system. The middle portions of the first and second disk members 1 and 21 are provided with holes through which the connection shafts (or bearings) pass so that the first and second disk members 1 and 21 can both rotate around the connection shafts (or bearings).

In the embodiment of the present application, as shown in fig. 3, the first disc member 1 includes a main body portion 11 and an extension portion 12, the main body portion 11 is disc-shaped, the extension portion 12 is annular, the extension portion 12 surrounds the main body portion 11 for one circle, and the thickness of the main body portion 11 is smaller than the thickness of the extension portion 12. The main body 11 and the extension 12 are flush on one side in the axial direction, the other side of the main body 11 is recessed with respect to the extension 12, and the second disk member 21 is placed on the main body 11 with a gap between the outer peripheral side edge of the second disk member 21 and the inner peripheral side edge of the extension 12. The electromagnet 4 and the stopper member 3 are both provided on the extension portion 12, and the abutment groove 121 is recessed from the end surface of the extension portion 12 toward the inside of the extension portion 12 in the axial direction of the breaking device. As such, when the slide member 5 is located in the abutment groove 121, the abutment groove 121 can lock the movement of the slide member 5 in the circumferential direction, so that the first disk member 1 and the second disk member 21 can transmit torque through the slide member 5.

Alternatively, the first disc member 1 may be connected to the half shaft or the output shaft of the electric drive system by means of flanges, splines or flat keys or the like.

As shown in fig. 2, the disconnecting means includes a first elastic member 17, the first shaft 14 and the second shaft 15 are fixed to the extension 12, and for example, in the case where only one first shaft and one second shaft are included, the first shaft 14 and the second shaft 15 are both located on the same side of the electromagnet 4 in the circumferential direction, and the first elastic member 17 is fixed to the first shaft 14. The middle portion of the spacing member 3 is penetrated by the second shaft 15 such that the spacing member 3 can rotate about the second shaft 15. The first end of the limiting member 3 is connected with the elastic member, the second end of the limiting member 3 protrudes towards the main body 11 relative to the electromagnet 4, and the second end of the limiting member 3 can extend into the limiting groove 511. The first elastic member 17 is always in an elongated state, which enables the first elastic member 17 to apply a force to a first end of the spacing member 3 opposite to the second end in a direction away from the electromagnet 4. Thus, when the electromagnet 4 is not electrified, the first end of the limiting member 3 is arranged at intervals with the electromagnet 4, when the electromagnet 4 is electrified, the electromagnet 4 attracts the first end of the limiting member 3, the limiting member 3 rotates around the second shaft 15, and the second end of the limiting member 3 moves towards a direction away from the electromagnet 4, so that the sliding member 5 moves towards the electromagnet 4.

In the embodiment of the present application, the stopper member 3 is located at one side of the electromagnet 4 in the circumferential direction, and as shown in fig. 5, the stopper member 3 includes an engagement portion 31 (i.e., a first end), a connection portion 32, and a stopper portion 33 (i.e., a second end) that are sequentially connected, the size of the connection portion 32 in the circumferential direction being larger than the size of the engagement portion 31 in the circumferential direction, the size of the connection portion 32 in the circumferential direction being larger than the size of the stopper portion 33 in the circumferential direction. The connecting portion 32 is penetrated by the second shaft 15 so that the spacing member 3 can rotate about the second shaft 15. The engaging portion 31 is connected with the first elastic member 17, the engaging portion 31 can be attracted by the electromagnet 4, and at least part of the limiting portion 33 can extend into the limiting groove 511, thereby realizing the limitation of the sliding member 5 in the radial direction.

As shown in fig. 5, the stopper 33 is "L" shaped, and when the electromagnet 4 attracts the engagement portion 31, the stopper member 3 rotates about the second shaft 15, so that the stopper 33 moves in a direction away from the electromagnet 4. When the position of the electromagnet 4 corresponds to the position of the slide member 5, the slide member 5 moves toward the electromagnet 4, the slide member 5 can abut against the connecting portion 32 to drive the stopper member 3 to rotate about the second shaft 15, and the stopper portion 33 moves toward the electromagnet 4, and at this time, a part of the stopper portion 33 can extend into the stopper groove 511, thereby realizing the stopper of the slide member 5 in the radial direction.

Alternatively, the electromagnet 4 may be provided with only one limiting member 3, and the limiting member 3 is located at one side of the electromagnet 4. When the electromagnet 4 attracts the sliding member 5 to move until the electromagnet 4 is attached to the sliding member 5, the limiting member 3 limits the sliding member 5 in the radial direction; the electromagnet 4 may be correspondingly provided with two limiting members 3, the two limiting members 3 are respectively disposed on two sides of the electromagnet 4 in the circumferential direction, and the sliding member 5 is provided with limiting grooves 511 on two sides in the circumferential direction. When the electromagnet 4 attracts the sliding member 5 to move until the electromagnet 4 is attached to the sliding member 5, the two limiting members 3 can respectively extend into the two limiting grooves 511, so that the sliding member 5 is limited in the radial direction.

In the embodiment of the present application, the disconnecting device includes a plurality of electromagnets 4 and a plurality of sliding members 5, the plurality of electromagnets 4 are disposed on the extension portion 12 at intervals, the plurality of sliding members 5 are disposed on the second disc member 21 at intervals, the plurality of electromagnets 4 are in one-to-one correspondence with the plurality of sliding members 5, and each sliding member 5 is provided with a limiting groove 511 correspondingly.

Further, the first disc member 1 further includes a connection block 13, the connection block 13 is disposed between any two adjacent electromagnets 4 of the plurality of electromagnets 4, two sides of the connection block 13 in the circumferential direction are provided with transition surfaces 131, the transition surfaces 131 are smooth curved surfaces, the transition surfaces 131 protrude toward the main body 11, and the transition surfaces 131 can guide the sliding member 5 to ensure that the locking blocks 52 of the sliding member 5 can enter the abutting grooves 121.

As shown in fig. 6, the slide member 5 includes a slider 51 and a lock block 52, each of the slider 51 and the lock block 52 being in a flat plate shape, the slider 51 being connected to one side of the lock block 52 in the axial direction, at least one of the slider 51 and the lock block 52 having magnetism on a side facing the extension 12. At least part of the lock block 52 can extend into the contact groove 121, and the slider 51 is provided with the above-described limit groove 511. When a portion of the lock block 52 protrudes into the abutment groove 121, both sides of the lock block 52 in the circumferential direction are respectively abutted against both side walls of the abutment groove 121 that are opposite to each other in the circumferential direction, whereby the lock block 52 is restrained in the circumferential direction.

Preferably, both ends of the slider 51 and the locking block 52 have magnetism, and the ends of the slider 51 and the locking block 52 may be "N" poles, and in this case, when the first disk member 1 and the second disk member 21 are required to be combined, the polarity of the electromagnet 4 is "S" poles, and when the first disk member 1 and the second disk member 21 are required to be disconnected, the polarity of the electromagnet 4 is "N" poles. The slider 51 and the lock block 52 may have an "S" pole at the end, and in this case, the electromagnet 4 may have an "N" pole when the first disk member 1 and the second disk member 21 are to be combined, and the electromagnet 4 may have an "S" pole when the first disk member 1 and the second disk member 21 are to be disconnected.

Alternatively, the dimension of the lock block 52 in the circumferential direction is smaller than the dimension of the slider 51 in the circumferential direction, and the dimension of the lock block 52 in the radial direction is smaller than the dimension of the slider 51 in the radial direction.

In the embodiment of the present application, as shown in fig. 4, the second disk member 21 is provided with a slide groove 211, at least part of the slide member 5 is located inside the slide groove 211, and when the position of the electromagnet 4 in the circumferential direction corresponds to the position of the slide member 5, the slide groove 211 communicates with the abutment groove 121. When the first disk member 1 and the second disk member 21 are in the disconnected state, the slide members 5 are all located in the slide grooves 211. When the first disk member 1 and the second disk member 21 are in the coupled state, a portion of the slide member 5 is removed from the slide groove 211, and at least a part of the removed portion is located in the abutment groove 121, thereby enabling torque transmission between the first disk member 1 and the second disk member 21.

Further, the second plate member 21 is provided with a first groove portion 2111 and a second groove portion 2112, the first groove portion 2111 is formed to be recessed from a side of the second plate member 21 facing away from the main body portion 11 toward the main body portion 11 side, and the second groove portion 2112 is formed to be recessed from a bottom portion of the first groove portion 2111 toward the main body portion 11 side; the slider 51 is positioned in the first groove portion 2111, and the lock block 52 is positioned in the second groove portion 2112. When the position of the slide member 5 corresponds to the position of the electromagnet 4, the second groove portion 2112 communicates with the abutment groove 121, and the lock block 52 slides from the second groove portion 2112 toward the abutment groove 121.

As shown in fig. 1 and 4, the second disc member 21 is provided with an output flange 22, the output flange 22 being for connection with an output half shaft or an output shaft of an electric drive system. Alternatively, the form of the structure on the second disc member 21 for connection with the axle shaft is not limited to a flange, and for example, the second disc member 21 may be connected with the axle shaft or the output shaft of the electric drive system by a spline, flat key or the like.

Further, the disconnecting device further includes a second elastic member 24, one end of the second elastic member 24 is connected to the groove wall of the first groove portion 2111, the other end of the second elastic member 24 is connected to the slider 51 of the sliding member 5, and the second elastic member 24 is located inside the first groove portion 2111. When the electromagnet 4 is not energized, the second disk member 21 rotates, and at this time, the second elastic member 24 applies a force to the sliding member 5 toward the middle of the second disk member 21, and the force applied to the sliding member 5 by the second elastic member 24 is larger than the centrifugal force of the sliding member 5, so that the lock block 52 does not slide out from the second groove portion 2112. When the electromagnet 4 is energized, the electromagnet 4 applies a force to the slide member 5 when the second disk member 21 rotates to a position where the position of the slide member 5 corresponds to the position of the electromagnet 4, so that the second elastic member 24 is elongated, and a portion of the lock block 52 slides out of the second groove portion 2112.

Alternatively, as shown in fig. 3 and 4, the disconnecting means includes a first detector 16 and a second detector 23, the first detector 16 being provided at an end of the abutment groove 121 remote from the second disc member 21, and an end of the lock block 52 facing the extension 12 being capable of abutting the first detector 16 when the electromagnet 4 attracts the slide member 5 to move until the electromagnet 4 engages with the slide member 5. The second detector 23 is provided at an end of the second groove portion 2112 away from the extension portion 12, and when the electromagnet 4 is not energized, an end of the lock block 52 away from the extension portion 12 can abut against the second detector 23. In this way, the first disc member 1 and the second disc member 21 of the disconnecting device can be detected in the disconnected state or the engaged state by the first detector 16 and the second detector 23.

Alternatively, the first detector and the second detector may be travel switches.

With the first disc member 1 connected to the electric drive system, the second disc member 21 connected to the half shaft, and the slide member 5 having an end of "N" as shown in fig. 1 and 2, for example, the first disc member 1 and the second disc member 21 are in a disconnected state, and the slide member 5 is entirely located in the slide groove 211, so that torque cannot be transmitted between the first disc member 1 and the second disc member 21. At this time, both the first disc member 1 and the second disc member 21 can rotate, the centrifugal force applied to the sliding member 5 is insufficient to overcome the pulling force of the second elastic member 24, so that the sliding member slides out of the sliding groove 211, the end of the engaging portion 31 of the limiting member 3 is spaced from the electromagnet 4, the end of the limiting portion 33 of the limiting member 3 is close to the electromagnet 4, and the two limiting portions 33 of the two limiting members 3 are closed, so as to avoid the sliding member 5 from being erroneously inserted into the abutting groove 121.

After receiving the signal of combining the first disc member 1 and the second disc member 21, the electromagnet 4 is energized, the polarity of the electromagnet 4 is S-pole, under the action of the magnetism of the electromagnet 4, the limiting member 3 overcomes the tension of the first elastic member 17, the limiting member 3 rotates, the end of the engaging portion 31 of the limiting member 3 contacts with the electromagnet 4, the ends of the limiting portions 33 of the limiting member 3 move in the direction away from the electromagnet 4, the ends of the limiting portions 33 of the two limiting members 3 are in an open state, and the states of the first disc member 1 and the second disc member 21 are shown in fig. 7 and 8. When the first disk member 1 and the second disk member 21 are rotated until the slide member 5 corresponds to the position of the electromagnet 4, the slide member 5 overcomes the tensile force of the first elastic member 17 under the action of electromagnetic force and centrifugal force, so that the portion of the lock block 52 of the slide member 5 enters the abutment groove 121, and the end portion of the slide member 5 is in contact with the electromagnet 4. During the process that part of the locking block 52 slides into the abutting groove 121, the sliding block 51 abuts against the connecting portion 32 to drive the limiting member 3 to rotate, so that the limiting portion 33 moves towards the locking block 52, and when the end portion of the sliding member 5 contacts with the electromagnet 4, part of the limiting portion 33 stretches into the limiting groove 511, and limiting of the sliding member 5 in the radial direction is achieved. Since the both side walls of the lock block 52 opposite to each other in the circumferential direction are abutted against the abutment groove 121, the restriction of the slide member 5 in the circumferential direction is achieved, and at this time, the state of the first disk member 1 and the second disk member 21 is as shown in fig. 9 and 10, and the first disk member 1 and the second disk member 21 can transmit torque. When the lock block 52 abuts against the first detector 16, the electromagnet 4 is turned off, and the first disk member 1 and the second disk member 21 are completely bonded.

Alternatively, since there is a difference in rotation speed of the first disc member 1 and the second disc member 21, the rotation speed of the first disc member 1 may be adjusted by the electric drive system so that a portion of the lock block 52 of the slide member 5 enters the abutment groove 121.

When the first disc member 1 and the second disc member 21 are required to be separated, the electromagnet 4 is electrified, the polarity of the electromagnet 4 is N, under the action of the magnetism of the electromagnet 4, the limiting member 3 overcomes the tensile force of the first elastic member 17, the limiting member 3 rotates, the end of the joint part 31 of the limiting member 3 contacts with the electromagnet 4, the limiting part 33 of the limiting member 3 moves out of the limiting groove 511, and the ends of the limiting parts 33 of the two limiting members 3 are in an open state. Since the polarity of the electromagnet 4 is the same as that of the slide member 5, the lock block 52 of the slide member 5 is moved out of the abutment groove 121 and all returns to the second slide groove 211 by the repulsion of the electromagnet 4. When the lock blocks 52 of the slide member 5 are all returned from the contact grooves 121 to the second slide grooves 211, the lock blocks 52 are brought into contact with the second detector 23, and at this time, the electromagnet 4 is turned off, and the stopper member 3 is returned to its original position, thereby completing the disconnection of the first disk member 1 from the second disk member 21.

Through the disconnection device of this application, only when carrying out the combination action and breaking action, electro-magnet 4 circular telegram, electro-magnet 4 need not to keep on circular telegram, has reduced the loss of electric energy.

According to another aspect of the present application, there is provided a method for operating a disconnection device, as shown in fig. 11, the method for controlling the disconnection device including:

a first acquisition step: acquiring the connection state of the first disk member 1 and the second disk member 21;

a first judging step: a first determination is made as to whether the connection state of the first disc member 1 and the second disc member 21 is the same as the intended connection state, and the disconnecting device is controlled to maintain the initial state or the electromagnet 4 is controlled to perform the operation of changing the connection state based on the result of the first determination, and when the operation of changing the connection state of the electromagnet 4 is completed, the electromagnet 4 is powered off.

The disconnecting device is controlled by the control method, so that the electromagnet 4 is electrified only when the combining action and the disconnecting action are carried out, continuous electrification is not needed, and the loss of electric energy is reduced.

In the control method of the disconnecting device of the present application, acquiring the connection state of the first disc member 1 and the second disc member 21 includes:

when the first detector 16 detects the sliding member 5 and the second detector 23 does not detect the sliding member 5, the first disk member 1 and the second disk member 21 are in a coupled state;

when the first detector 16 does not detect the sliding member 5 and the second detector 23 detects the sliding member 5, the first disk member 1 and the second disk member 21 are in a disconnected state.

At this time, if the first detector 16 and the second detector 23 detect the sliding member 5 at the same time, or the first detector 16 and the second detector 23 do not detect the sliding member 5 at the same time, at least one of the first detector 16 and the second detector 23 malfunctions, at which time the electromagnet 4 is powered off, and the disconnecting device only needs to be kept in an initial state.

Determining whether the connection state of the first disk member 1 and the second disk member 21 satisfies the intended connection state includes:

when the result of the first judgment indicates that the expected connection state is the same as the connection state of the first disc member 1 and the second disc member 21, the disconnecting means maintains the initial state;

when the result of the first determination indicates that the expected connection state is different from the connection state of the first disc member 1 and the second disc member 21, the electromagnet 4 performs an action of changing the connection state.

Specifically, when the first disc member 1 and the second disc member 21 are in the expected connection state, and if the first detector 16 does not detect the sliding member 5 and the second detector 23 detects the sliding member 5, the first disc member 1 and the second disc member 21 are in the connection state, and the expected connection state is the same as the actual connection state, and the disconnection device only needs to maintain the initial state; if the first detector 16 detects the slide member 5 and the second detector 23 does not detect the slide member 5, the first disk member 1 and the second disk member 21 are in the disconnected state, and the expected connection state is different from the actual connection state, and the electromagnet 4 is required to perform the operation of changing the connection state. When the first disk member 1 and the second disk member 21 are disconnected from each other in the expected connection state, if the first detector 16 does not detect the slide member 5 and the second detector 23 detects the slide member 5, the first disk member 1 and the second disk member 21 are in the coupled state, and the expected connection state is different from the actual connection state, and the electromagnet 4 is required to perform an operation of changing the connection state.

In addition, if the first detector 16 and the second detector 23 detect the sliding member 5 at the same time or the first detector 16 and the second detector 23 detect no sliding member 5 at the same time, at least one of the first detector 16 and the second detector 23 malfunctions, and the opening device only needs to be maintained in an initial state.

When the electromagnet 4 performs the action of changing the connection state, the electromagnet 4 is energized, and when the first disk member 1 and the second disk member 21 are required to be combined, the polarity of the electromagnet 4 is opposite to the polarity of the sliding member 5, so that the sliding member 5 is attracted by the electromagnet 4, and the combination of the first disk member 1 and the second disk member 21 is completed; when it is necessary to disconnect the first disc member 1 from the second disc member 21, the polarity of the electromagnet 4 is the same as the polarity of the slide member 5, so that the slide member 5 is repelled by the electromagnet 4, thereby completing the separation of the first disc member 1 and the second disc member 21.

The control method of the disconnecting device further comprises the following steps:

a second acquisition step: after the disconnecting means performs the action of changing the connection state for a predetermined time, the connection state of the first disk member 1 and the second disk member 21 is again acquired;

and a second judging step: a second determination is made as to whether the newly acquired connection state of the first disk member 1 and the second disk member 21 satisfies the intended connection state, and the electromagnet 4 is controlled to be powered off or the electric drive system is controlled to perform the adjustment operation based on the result of the second determination.

In this way, after the electromagnet 4 is energized, it can be determined whether or not the change of the connection state of the first disk member 1 and the second disk member 21 is completed by the first detector 16 and the second detector 23.

Specifically, when the first disk member 1 and the second disk member 21 are in the coupled state when the sliding member 5 is not detected by the first detector 16 and the sliding member 5 is detected by the second detector 23 after the electromagnet 4 performs the operation of changing the first disk member 1 and the second disk member 21 to the coupled state for a predetermined time when the desired coupled state is the coupled state, the electromagnet 4 is turned off, and the operation of changing the coupled state is completed by the electromagnet 4; if the first detector 16 detects the sliding member 5 and the second detector 23 does not detect the sliding member 5, the first disk member 1 and the second disk member 21 are in the disconnected state, the expected connection state is different from the actual connection state, and the first disk member 1 and the second disk member 21 are not changed to the coupled state, and at this time, the electric drive system performs the adjustment operation.

When the first disk member 1 and the second disk member 21 are in the coupled state when the sliding member 5 is not detected by the first detector 16 and the sliding member 5 is detected by the second detector 23 after the electromagnet 4 performs the operation of changing the first disk member 1 and the second disk member 21 to the off state for a predetermined time when the expected connection state is the off state, the expected connection state is different from the actual connection state, and the first disk member 1 and the second disk member 21 are not changed to the off state, at this time, the electric drive system performs the adjustment operation; when the first detector 16 detects the sliding member 5 and the second detector 23 does not detect the sliding member 5, the first disk member 1 and the second disk member 21 are in the disconnected state, the expected connection state is the same as the actual connection state, the electromagnet 4 completes the operation of changing the connection state, and the electromagnet 4 is powered off.

In addition, if the first detector 16 and the second detector 23 detect the sliding member 5 at the same time or the first detector 16 and the second detector 23 detect no sliding member 5 at the same time, at least one of the first detector 16 and the second detector 23 fails, and at this time, the electromagnet 4 is powered off, and the disconnection device only needs to be kept in an initial state.

Further, when the result of the second judgment indicates that the expected connection state is the same as the connection state of the first disc member 1 and the second disc member 21, the electromagnet 4 is powered off;

when the result of the second judgment indicates that the expected connection state is different from the connection state of the first disc member 1 and the second disc member 21, a third judgment is made as to whether the number of times the electric drive system adjusts the rotation speed is smaller than the expected adjustment number, and the electric drive system is controlled to adjust the rotation speed or the electromagnet 4 is powered off based on the judgment result.

When the third judging result shows that the number of times of adjusting the rotating speed of the electric drive system is greater than or equal to the expected adjusting number of times, the electromagnet 4 is powered off;

when the third judgment result indicates that the number of times the rotation speed of the electric drive system is adjusted is smaller than the expected number of times of adjustment, the electric drive system adjusts the rotation speed, keeps the electromagnet 4 to execute the action of changing the connection state, and then executes the second judgment step.

In this way, if the number of adjustments is greater than or equal to the expected number of adjustments, the expected connection state is still different from the connection state of the first disc member 1 and the second disc member 21, and the switching of the connection state between the first disc member 1 and the second disc member 21 fails, the electromagnet 4 is powered off, and the disconnection device maintains the initial state. If the number of adjustments is smaller than the expected number of adjustments, the rotational speed of the electric drive system may be overadjusted, thereby adjusting the rotational speed of the first disc member 1 so that the portion of the locking block 52 of the slide member 5 can be moved into the abutment groove 121 or out of the abutment groove 121, after which the second determination step is continued.

When the control method of the disconnecting device of the present application is executed, when the initial state of the first disc member 1 and the second disc member 21 is the disconnected state and the expected connection state is the combined state, the connection state of the first disc member 1 and the second disc member 21 is firstly obtained, and the first judgment is made on the connection state of the first disc member 1 and the second disc member 21 and the expected connection state, if the first detector 16 does not detect the sliding member 5, and the second detector 23 detects the sliding member 5, the first disc member 1 and the second disc member 21 are in the combined state, and the expected connection state is the same as the actual connection state, and the disconnecting device only needs to keep the initial state; if the first detector 16 and the second detector 23 detect the sliding member 5 at the same time or the first detector 16 and the second detector 23 do not detect the sliding member 5 at the same time, at least one of the first detector 16 and the second detector 23 fails, and the disconnecting device only needs to be kept in an initial state; if the first detector 16 detects the slide member 5 and the second detector 23 does not detect the slide member 5, the first disk member 1 and the second disk member 21 are in the disconnected state, and the expected connection state is different from the actual connection state, and the electromagnet 4 is required to perform the operation of changing the connection state.

After that, the electromagnet 4 performs the action of changing the connection state, the electromagnet 4 is energized, and the polarity of the electromagnet 4 is opposite to that of the sliding member 5, so that the part of the sliding member 5 can extend into the abutting groove 121, and the part of the limiting member 3 enters into the limiting groove 511. After the electromagnet 4 performs the operation of changing the first disc member 1 and the second disc member 21 to the combined state for a predetermined time, the connection state of the first disc member 1 and the second disc member 21 is obtained, the connection state of the first disc member 1 and the second disc member 21 is judged for the second time, if the sliding member 5 is not detected by the first detector 16 and the sliding member 5 is detected by the second detector 23, the first disc member 1 and the second disc member 21 are in the combined state, the expected connection state is the same as the actual connection state, the electromagnet 4 is powered off, the operation of changing the connection state of the electromagnet 4 is completed, and the electromagnet 4 is powered off; if the first detector 16 detects the sliding member 5 and the second detector 23 does not detect the sliding member 5, the first disc member 1 and the second disc member 21 are in the disconnected state, the expected connection state is different from the actual connection state, the first disc member 1 and the second disc member 21 are not changed to the combined state, at this time, a third judgment is made as to whether the number of times of adjustment of the rotation speed of the electric drive system is smaller than the expected number of times of adjustment, if the number of times of adjustment is greater than or equal to the expected number of times of adjustment, the expected connection state is still different from the connection state of the first disc member 1 and the second disc member 21, the connection state between the first disc member 1 and the second disc member 21 fails to switch, the electromagnet 4 is powered off, and the disconnection device maintains the initial state. If the number of adjustments is smaller than the expected number of adjustments, the rotational speed of the electric drive system may be adjusted so as to adjust the rotational speed of the first disc member 1 so that the portion of the lock block 52 of the slide member 5 can be moved into the abutment groove 121 or out of the abutment groove 121, after which the second determination step is continued to determine the connection state between the first disc member 1 and the second disc member 21.

When the first disc member 1 and the second disc member 21 are disconnected in the expected connection state, if the first detector 16 does not detect the sliding member 5 and the second detector 23 detects the sliding member 5, the first disc member 1 and the second disc member 21 are in the combined state, and the expected connection state is different from the actual connection state, and the electromagnet 4 is required to perform the action of changing the connection state; if the first detector 16 detects the sliding member 5 and the second detector 23 does not detect the sliding member 5, the first disc member 1 and the second disc member 21 are in a disconnected state, and the expected connection state is the same as the actual connection state, and the disconnection device only needs to maintain the initial state.

When the initial state of the first disc member 1 and the second disc member 21 is the combined state and the expected connection state is the disconnected state, the connection state of the first disc member 1 and the second disc member 21 is first obtained, and the connection state of the first disc member 1 and the second disc member 21 is first judged, and if the sliding member 5 is not detected by the first detector 16 and the sliding member 5 is detected by the second detector 23, the first disc member 1 and the second disc member 21 are in the combined state, and the expected connection state is different from the actual connection state, and the electromagnet 4 is required to execute the action of changing the connection state; if the first detector 16 and the second detector 23 detect the sliding member 5 at the same time or the first detector 16 and the second detector 23 do not detect the sliding member 5 at the same time, at least one of the first detector 16 and the second detector 23 fails, and the disconnecting device only needs to be kept in an initial state; if the first detector 16 detects the sliding member 5 and the second detector 23 does not detect the sliding member 5, the first disc member 1 and the second disc member 21 are in a disconnected state, and the expected connection state is the same as the actual connection state, and the disconnection device only needs to maintain the initial state.

After that, the electromagnet 4 performs the action of changing the connection state, the electromagnet 4 is electrified, the polarity of the electromagnet 4 is the same as that of the sliding member 5, so that part of the limiting member 3 moves out of the limiting groove 511, and part of the sliding member 5 can move out of the abutting groove 121. After the electromagnet 4 performs the operation of changing the first disc member 1 and the second disc member 21 to the coupled state for a predetermined time, the coupled state of the first disc member 1 and the second disc member 21 is acquired, and the coupled state of the first disc member 1 and the second disc member 21 is determined in a second manner, and if the sliding member 5 is not detected by the first detector 16 and the sliding member 5 is detected by the second detector 23, the first disc member 1 and the second disc member 21 are in the coupled state, and the coupled state is different from the actual coupled state, and the first disc member 1 and the second disc member 21 are not changed to the coupled state. And then, judging whether the number of times of adjusting the rotating speed of the electric drive system is smaller than the expected number of times of adjusting, if the number of times of adjusting is larger than or equal to the expected number of times of adjusting, the expected connection state is still different from the connection state of the first disc member 1 and the second disc member 21, the connection state between the first disc member 1 and the second disc member 21 fails to switch, the electromagnet 4 is powered off, and the disconnecting device keeps an initial state. If the number of adjustments is smaller than the expected number of adjustments, the rotational speed of the electric drive system may be adjusted so as to adjust the rotational speed of the first disc member 1 so that the portion of the lock block 52 of the slide member 5 can be moved into the abutment groove 121 or out of the abutment groove 121, after which the second determination step is continued to determine the connection state between the first disc member 1 and the second disc member 21.

Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present invention, and not for limiting the same; although the invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some or all of the technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit of the invention.

Claims

1. A disconnect device comprising a first disc member, a second disc member, a slide member, an electromagnet, and a limit member, one of the first disc member and the second disc member being for connection with a half shaft, the other of the first disc member and the second disc member being for connection with an electric drive system;

2. The opening device according to claim 1, wherein the first disc member includes a main body portion and an extension portion surrounding the main body portion for one revolution, the second disc member is provided on the main body portion, the electromagnet and the stopper member are both provided on the extension portion, and the abutment groove is recessed from a side of the extension portion facing the main body portion toward an inside of the extension portion in the radial direction.

3. The breaking device according to claim 2, characterized in that the breaking device comprises a first elastic member fixed on the extension, the middle part of the limiting member being hinged to the extension, the first end of the limiting member being connected to the first elastic member, the first end of the limiting member being attractable by the electromagnet, the second end of the limiting member protruding towards the body with respect to the electromagnet, the second end of the limiting member being able to extend into the limiting groove, the first elastic member being in an elongated state.

4. A disconnecting device according to claim 3, wherein the limit member comprises an engagement portion, a connection portion and a limit portion connected in sequence, the engagement portion being connected with the first elastic member, the connection portion being hinged with the first disc member, at least part of the limit portion being capable of extending into the limit groove;

5. The opening device according to any one of claims 2 to 4, characterized in that the opening device includes a plurality of electromagnets provided at intervals on the extension portion and a plurality of slide members provided at intervals on the second disk member, the plurality of electromagnets being in one-to-one correspondence with the plurality of slide members, each of the slide members being provided with the abutment groove.

6. The opening device according to claim 5, wherein each of the electromagnets is provided with two of the stopper members, respectively, provided on both sides of the electromagnet in the circumferential direction.

7. The opening device according to claim 2, characterized in that the second disc member is provided with a sliding groove, at least part of the sliding member being located inside the sliding groove, the sliding groove communicating with the abutment groove when the position of the electromagnet in the circumferential direction corresponds to the position of the sliding member in the circumferential direction.

8. The opening device according to claim 7, characterized in that the slide member includes a slider and a lock block, the slider being connected to one side of the lock block in the axial direction, at least part of the lock block being able to extend into the abutment groove, the slider being provided with the limit groove.

9. The opening device according to claim 8, wherein the slide groove includes a first groove portion formed recessed from a side of the second disk member facing away from the main body portion toward the main body portion, and a second groove portion formed recessed from a bottom of the first groove portion toward the main body portion side;

10. The opening device according to claim 9, further comprising a second elastic member that is stretchable in a radial direction, one end of the second elastic member being connected to a groove wall of the second groove portion, and a second end of the second elastic member being connected to the sliding member.

11. The disconnecting device according to claim 9, characterized in that the disconnecting device comprises a first detector, which is arranged at an end of the abutment groove remote from the second disc member, with which first detector an end of the locking block facing the electromagnet can abut.

12. The disconnecting device according to claim 9, characterized in that the disconnecting device further comprises a second detector, which is arranged at an end of the sliding groove remote from the electromagnet, with which the end of the locking block remote from the extension can abut.

13. The opening device according to claim 5, wherein the first disc member further includes a connection block, the connection block is provided between any adjacent two of the plurality of electromagnets, both sides of the connection block in the circumferential direction are formed with transition surfaces, the transition surfaces are rounded curved surfaces, and the transition surfaces protrude toward the main body portion.

14. A control method of a disconnecting device, characterized in that the control method of a disconnecting device acts on a disconnecting device comprising a first disc member, a second disc member, a limiting member, an electromagnet and a sliding member, one of the first disc member and the second disc member being for connection with a half shaft, the other of the first disc member and the second disc member being for connection with an electric drive system; the electromagnet and the limiting member are both arranged on the first disc member, the limiting member can move relative to the first disc member, the sliding member is slidably connected with the second disc member, the sliding member is provided with a limiting groove and is magnetic, the first disc member is provided with an abutting groove, the polarity of the electromagnet can be adjusted, so that part of the sliding member can move between the inside and the outside of the abutting groove, and part of the limiting member can move between the inside and the outside of the limiting groove;

the control method of the disconnecting device comprises the following steps:

15. The control method of a disconnection device according to claim 14, characterized in that the control method of a disconnection device further comprises:

16. The control method of the opening device according to claim 15, characterized in that the opening device further includes a first detector and a second detector, the second disc member is provided with a sliding groove, at least part of the sliding member is located inside the sliding groove, the first detector is provided at an end of the abutting groove away from the second disc member, and the second detector is provided at an end of the sliding groove away from the electromagnet;

17. The control method of the opening device according to claim 16, wherein making a first determination as to whether the connection state of the first disc member and the second disc member is the same as the intended connection state includes:

18. The method for controlling a disconnection device according to claim 16, wherein,

when the result of the second judgment indicates that the expected connection state is the same as the connection state of the first disc member and the second disc member, the electromagnet is deenergized;

19. The control method of the opening device according to claim 18, wherein making a third determination as to whether the number of times the electric drive system adjusts the rotational speed is smaller than an expected number of times of adjustment, controlling the electric drive system to adjust the rotational speed or the electromagnet to be deenergized based on a result of the third determination includes: