Torque damping assembly, electric drive axle and vehicle

Abstract

The utility model discloses a torque damping assembly, an electric drive axle and a vehicle, and relates to the technical field of electric drive systems.The torque damping assembly comprises a power input piece used for being connected with a rotating source; the power transmission structure is arranged on one side of the power input part; the first damping piece is connected with the power input piece and the power transmission structure; the power output part is used for being connected with target output; the second damping part is connected with the power transmission structure and the power output part; the damping force of the first damping piece is smaller than that of the second damping piece. According to the technical scheme of the utility model, the output stability of the electric driving system is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of electric drive systems, and in particular to a torque damping component, an electric drive bridge and a vehicle. Background Art

[0002] With the development of new energy vehicles, electric vehicles and industrial automation, the stability and reliability of the performance of electric drive axles as key power transmission components are increasingly valued. Electric drive axles are mainly composed of motors, reducers, differentials, etc. Among them, the motor is the power source, and its output characteristics directly affect the performance of the entire drive system. When the motor is working, there will be speed or torque fluctuations, which is not conducive to the stable output of the entire drive system. Utility Model Content

[0003] The main purpose of the utility model is to provide a torque vibration reduction component, an electric drive axle and a vehicle, aiming to improve the output stability of the electric drive system.

[0004] To achieve the above objectives, the present invention provides a torque damping assembly, which includes:

[0005] A power input member for connecting to a rotation source;

[0006] A power transmission structure, disposed on one side of the power input member;

[0007] a first damping member, connecting the power input member and the power transmission structure;

[0008] A power output member for connecting to a target output; and

[0009] A second damping member connects the power transmission structure and the power output member; wherein the damping force of the first damping member is smaller than the damping force of the second damping member.

[0010] In one embodiment, two second damping members are provided, and the directions of the damping forces generated by the two second damping members on the power output member are opposite.

[0011] In one embodiment, the power transmission structure includes:

[0012] a first power transmission member, rotatably disposed on one side of the power input member, wherein the first damping member connects the first power transmission member and the power input member; and

[0013] The second power transmission member is arranged on a side of the first power transmission member away from the power input member and is fixedly connected to the first power transmission member. The second damping member connects the second power transmission member and the power output member.

[0014] In one embodiment, the second power transmission member comprises:

[0015] a first transmission sub-disc, which is disposed on a side of the first power transmission member away from the power input member and is fixedly connected to the first power transmission member; and

[0016] a second transmission sub-disc, wherein the first transmission sub-disc and the second transmission sub-disc are spaced apart from each other along the axial direction of the power output member and are disposed on both sides of the power output member;

[0017] Wherein, the first transmission sub-disc and the power output member are connected via a second damping member, and the second transmission sub-disc and the power output member are connected via another second damping member.

[0018] In one embodiment, the power output member comprises:

[0019] A first output sub-disc is disposed on a side of the first transmission sub-disc away from the first power transmission member, and a second damping member connects the first output sub-disc and the first transmission sub-disc;

[0020] a second output sub-disk, which is disposed on a side of the first output sub-disk facing the second transfer sub-disk and is fixedly connected to the first output sub-disk, and another second damping member connects the second output sub-disk and the second transfer sub-disk; and

[0021] The gear ring is sleeved on the outside of the first output sub-disc and the second output sub-disc, and the first output sub-disc and the second output sub-disc are both fixedly connected to the gear ring, and teeth are arranged on the outer circumference of the gear ring.

[0022] In one embodiment, one of the second damping members is configured as a compression spring, and another of the second damping members is configured as a tension spring; and / or, the first damping member is configured as a spring.

[0023] In one embodiment, the torque damping assembly further includes an inner lining member, and the inner lining member is disposed between the second power transmission member and the power input member.

[0024] In one embodiment, the torque damping assembly further includes a limiting structure, which is disposed between the power input member and the power transmission structure to limit a rotation angle of the power input member relative to the power transmission structure.

[0025] In one embodiment, the limiting structure includes a limiting protrusion and a limiting recess cooperating with the limiting protrusion, one of the power transmission structure and the power input member is provided with the limiting protrusion, and the other of the power transmission structure and the power input member is provided with the limiting recess.

[0026] In one embodiment, the power input member includes:

[0027] An input seat having an internal spline for connecting to the rotation source; and

[0028] A turntable disposed on one side of the input seat facing the power transmission structure, and the turntable is connected to the power transmission structure through the first damping member.

[0029] To achieve the above object, an embodiment of the present invention provides an electric drive axle, which includes:

[0030] A motor;

[0031] A torque damping assembly, which includes the torque damping assembly described above, and the output shaft of the motor is drivingly connected to the power input member.

[0032] To achieve the above object, an embodiment of the present invention provides a vehicle, which includes the electric drive axle described above.

[0033] In the technical solution of the present application, the first damping member and the second damping member are sequentially arranged in the force transmission direction. Since the damping force of the first damping member is less than that of the second damping member, when the vehicle speed is relatively stable, the rotation speed and torque of the motor change less, and it can overcome the damping force of the first damping member but cannot overcome the damping force of the second damping member. The first damping member absorbs energy and acts in the reverse direction on the rotating shaft of the motor, reducing the rotational speed fluctuation of the motor at the next moment, thereby improving the output stability of the electric drive system. When the vehicle is starting, getting out of trouble or for other reasons resulting in a large mutation in the motor torque and speed, the output fluctuation of the motor is large, and it can overcome the damping forces of both the first damping member and the second damping member at the same time. The second damping member absorbs the mutation energy and releases it to the power output member. At the same time, the damping force of the second damping member also acts in the reverse direction on the output shaft of the motor, reducing the change amplitude of the motor output, thereby further improving the output stability of the electric drive system. After the motor speed mutation ends and the energy release of the second damping member ends, the rotation speed and torque of the motor change less, and the first damping member acts in the reverse direction on the rotating shaft of the motor to reduce the fluctuation of the motor output. It can be understood that by setting the first damping member and the second damping member, the fluctuation of the motor speed or torque can be reduced, the impact during gear transmission can be reduced, and the service life and shifting quality of the transmission gears of the electric drive axle can be effectively improved. Moreover, the structure of this solution is simple, the cost is low, it can be improved on the basis of the existing electric drive axle, or the original gear transmission can be directly replaced, the overall structure improvement is small, and the versatility is wide. Description of the Drawings

[0034] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on the structures shown in these drawings.

[0035] Figure 1 Schematic structural diagram of an embodiment of the damping and vibration reduction component of the present invention;

[0036] Figure 2 Exploded structural diagram of an embodiment of the damping and vibration reduction component of the present invention from one angle;

[0037] Figure 3 Exploded structural diagram of an embodiment of the damping and vibration reduction component of the present invention from another angle.

[0038] Explanation of the reference numerals in the drawings:

[0039] 100, power input member; 110, input seat; 120, turntable; 200, power transmission structure; 210, first power transmission member; 220, second power transmission member; 221, first transmission sub-disk; 222, second transmission sub-disk; 310, first damping member; 320, second damping member; 400, power output member; 410, first output sub-disk; 420, second output sub-disk; 430, gear ring.

[0040] The realization, functional features and advantages of the object of the present invention will be further described in conjunction with the embodiments with reference to the drawings. Specific embodiments

[0041] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, rather than all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the embodiments of the present invention.

[0042] It should be noted that all directional indications (such as up, down, left, right, front, back...) in the embodiments of the present invention are only used to explain the relative position relationship and movement conditions between components in a specific posture (as shown in the drawings). If the specific posture changes, the directional indications will also change accordingly.

[0043] In addition, in the embodiments of the present utility model, descriptions such as "first", "second", etc. are only for descriptive purposes and should not be construed as indicating or implying their relative importance or implicitly specifying the quantity of the indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include at least one such feature. In the description of the embodiments of the present utility model, the meaning of "a plurality" is at least two, such as two, three, etc., unless otherwise specifically defined.

[0044] In the embodiments of the present utility model, unless otherwise clearly specified and limited, terms such as "connection" and "fixation" should be understood in a broad sense. For example, "fixation" can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and can be the communication inside two components or the interaction relationship between two components, unless otherwise clearly limited. For those of ordinary skill in the art, the specific meanings of the above terms in the embodiments of the present utility model can be understood according to specific circumstances.

[0045] In addition, the technical solutions between the various embodiments of the present utility model can be combined with each other, but it must be based on the ability of those of ordinary skill in the art to implement. When the combination of technical solutions results in contradictions or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection required by the embodiments of the present utility model.

[0046] An electric drive axle mainly consists of a motor, a reducer, a differential, etc. Among them, the motor is used as the power source, and its output characteristics directly affect the performance of the entire drive system. Currently, software control is usually used to improve the stable output of the motor. However, software control cannot eliminate the fluctuations in the motor speed or the fluctuations in the motor output due to working conditions and other reasons, which affects the stability of the electric drive axle transmission system and easily leads to impacts in gear transmission and poor shifting quality.

[0047] In view of this, the embodiments of the present utility model provide a torque damping component, an electric drive axle, and a vehicle. A first damping member and a second damping member with different damping force magnitudes are sequentially arranged in the force transmission direction. The first damping member with a smaller damping force can reduce the smaller fluctuations in the motor speed, and the second damping member with a larger damping force can reduce the sudden changes in the motor speed, thereby improving the stable output of the electric drive system, further reducing the impact during gear transmission, and effectively improving the service life of the transmission gears of the electric drive axle and the shifting quality.

[0048] To better understand the above technical solutions, the above technical solutions will be described in detail below with reference to the accompanying drawings.

[0049] As Figures 1 to 3 shown, the embodiments of the present utility model propose a torque damping component, including:

[0050] A power input member 100 for connecting to a rotating source. Optionally, the rotating source can be the rotating shaft of an electric motor.

[0051] A power transmission structure 200 provided on one side of the power input member 100.

[0052] A first damping member 310 connecting the power input member 100 and the power transmission structure 200.

[0053] A power output member 400 for connecting to a target output; and

[0054] A second damping member 320 connecting the power transmission structure 200 and the power output member 400; wherein, the damping force of the first damping member 310 is less than that of the second damping member 320.

[0055] In the technical solution adopted in this embodiment, the first damping member 310 and the second damping member 320 are arranged in sequence in the force transmission direction. Since the damping force of the first damping member 310 is less than that of the second damping member 320, when the vehicle speed is relatively stable, the rotation speed and torque of the electric motor change little, and it can overcome the damping force of the first damping member 310 but cannot overcome the damping force of the second damping member 320. The first damping member 310 absorbs energy and acts in the reverse direction on the rotating shaft of the electric motor, reducing the rotation speed fluctuation of the electric motor at the next moment, thereby improving the output stability of the electric drive system. When the vehicle is starting, getting out of trouble or for other reasons resulting in a large mutation in the torque and rotation speed of the electric motor, the output fluctuation of the electric motor is large, and it can overcome the damping forces of both the first damping member 310 and the second damping member 320 at the same time. The second damping member 320 absorbs the mutation energy and releases it to the power output member 400. At the same time, the damping force of the second damping member 320 also acts in the reverse direction on the output shaft of the electric motor, reducing the change amplitude of the electric motor output, thereby further improving the output stability of the electric drive system. After the rotation speed mutation of the electric motor ends and the energy release of the second damping member 320 ends, the rotation speed and torque of the electric motor change little, and the first damping member 310 acts in the reverse direction on the rotating shaft of the electric motor to reduce the output fluctuation of the electric motor.

[0056] Optionally, the first damping member 310 and / or the second damping member 320 are configured with springs. The springs are convenient to install and have a low cost. Of course, the first damping member 310 and / or the second damping member 320 can also be other components that can absorb and release energy, which are not limited herein.

[0057] In one embodiment of the utility model, two second damping members 320 are provided, and the directions of the damping forces generated by the two second damping members 320 on the power output member 400 are opposite. Since the damping force of the second damping member 320 is relatively large, the power output member 400 is easy to rotate under the damping force of the second damping member 320 when it is static. For this reason, two second damping members 320 are provided in this embodiment, and the directions of the damping forces generated by the two second damping members 320 on the power output member 400 are opposite. It can be understood that the force generated by one second damping member 320 on the power output member 400 can drive the power output member 400 to rotate, and the force generated by the other second damping member 320 on the power output member 400 can limit the rotation of the power output member 400, so that the forces of the two second damping members 400 on the power output member 400 can offset each other, thereby preventing the power output member 400 from rotating when it is static. Optionally, the damping force direction of one second damping member 320 on the power output member 400 is clockwise, and the damping force direction of another second damping member 320 on the power output member 400 is counterclockwise. In one embodiment, one second damping member 320 is configured as a compression spring, and the other second damping member 320 is configured as a tension spring. In this way, the power output member 400 can be prevented from rotating when static.

[0058] In one embodiment of the present invention, referring to Figure 2 , the power transmission structure 200 comprises:

[0059] A first power transmission member 210 is rotatably disposed on one side of the power input member 100, and a first damping member 310 connects the first power transmission member 210 and the power input member 100; and

[0060] The second power transmission member 220 is disposed on a side of the first power transmission member 210 away from the power input member 100 and is fixedly connected to the first power transmission member 210 . The second damping member 320 connects the second power transmission member 220 and the power output member 400 .

[0061] Specifically, the power transmission structure 200 includes a first power transmission member 210 and a second power transmission member 220, and the first power transmission member 210 and the second power transmission member 220 are arranged along the axial direction of the rotating shaft of the motor, and the first power transmission member 210 and the second power transmission member 220 are fixedly arranged. The torque of the motor is transmitted to the power output member 400 through the first power transmission member 210 and the second power transmission member 220, so as to realize the efficient transmission of power from input to output, reduce energy loss, and improve the overall work efficiency. Moreover, the first damping member 310 and the second damping member 320 are connected by different power transmission members, which can improve the convenience of installation and ensure the structural strength of the first power transmission member 210 and the second power transmission member 220. Optionally, the first power transmission member 210 and the second power transmission member 220 are connected by bolts.

[0062] In one embodiment of the present invention, referring to Figure 2 and Figure 3 , the second power transmission member 220 includes:

[0063] The first transmission sub-disc 221 is disposed on a side of the first power transmission member 210 away from the power input member 100 and is fixedly connected to the first power transmission member 210; and

[0064] The second transmission sub-disc 222, the first transmission sub-disc 221 and the second transmission sub-disc 222 are arranged at intervals along the axial direction of the power output member 400 and are arranged on both sides of the power output member 400;

[0065] The first transmission sub-disc 221 and the power output member 400 are connected via a second damping member 320 , and the second transmission sub-disc 222 and the power output member 400 are connected via another second damping member 320 .

[0066] Specifically, the second power transmission member 220 includes a first transmission sub-disc 221 and a second transmission sub-disc 222. The first transmission sub-disc 221 and the second transmission sub-disc 222 are arranged on both sides of the power output member 400. It can be understood that the first transmission sub-disc 221 and the first transmission sub-disc 221 are fixedly connected and can rotate synchronously with the first transmission member. The first transmission sub-disc 221 is connected to the power output member 400 through a second damping member 320, and the second transmission sub-disc 222 is connected to the power output member 400 through another second damping member 320. The two second damping members 320 generate two damping forces in opposite directions on the power output member 400 and act on both sides of the power output member 400, which can prevent the power output member 400 from rotating when it is static. Moreover, the first transmission sub-disc 221 and the second transmission sub-disc 222 can realize the independent installation of the two second damping members 320, and the assembly is more convenient.

[0067] In one embodiment of the present invention, referring to Figure 2 andFigure 3 , the power output member 400 comprises:

[0068] A first output sub-disc 410 is disposed on a side of the first transmission sub-disc 221 away from the first power transmission member 210, and a second damping member 320 connects the first output sub-disc 410 and the first transmission sub-disc 221;

[0069] The second output sub-disc 420 is disposed on a side of the first output sub-disc 410 facing the second transfer sub-disc 222 and is fixedly connected to the first output sub-disc 410, and another second damping member 320 connects the second output sub-disc 420 and the second transfer sub-disc 222; and

[0070] The gear ring 430 is sleeved outside the first output sub-disc 410 and the second output sub-disc 420 , and the first output sub-disc 410 and the second output sub-disc 420 are both fixedly connected to the gear ring 430 , and teeth are arranged on the outer circumference of the gear ring 430 .

[0071] Specifically, the power output member 400 includes a first output sub-disc 410, a second output sub-disc 420 and a gear ring 430. The first output sub-disc 410 and the second output sub-disc 420 are fixedly connected and can rotate synchronously, the gear ring 430 is sleeved on the outside of the first output sub-disc 410 and the second output sub-disc 420 and fixedly connected, the gear ring 430 rotates synchronously with the first output sub-disc 410 and the second output sub-disc 420, and the outer peripheral surface of the gear ring 430 is provided with teeth, which can mesh with the transmission gear to achieve power output. The first output sub-disc 410 and the second output sub-disc 420 are arranged between the first transmission sub-disc 221 and the second transmission sub-disc 222, and are respectively connected by a corresponding second damping member 320, which can improve the uniformity of power transmission. Optionally, the first output sub-disc 410 and the second output sub-disc 420 are connected by bolts.

[0072] In one embodiment of the present invention, the torque damping assembly further includes an inner lining member, which is disposed between the second power transmission member 220 and the power input member 100. Specifically, the outer diameter of the power input member 100 is greater than the outer diameter of the first power transmission member 210, and there is a gap between the power input member 100 and the second power transmission member 220. The inner lining member can fill the gap between the power input member 100 and the second power transmission member 220, thereby improving the force uniformity of the power input member 100.

[0073] In an embodiment of the present invention, the torque damping assembly further includes a limiting structure (not shown), which is disposed between the power input member 100 and the power transmission structure 200 to limit the rotation angle of the power input member 100 relative to the power transmission structure 200 .

[0074] To prevent the first damping member 310 from being over-compressed and losing its damping ability, a limiting structure is provided. Through the limiting structure, the rotation angle of the power input member 100 relative to the power transmission structure 200 can be restricted. It can be understood that when the power input member 100 rotates a predetermined angle relative to the power transmission structure 200, the power transmission structure 200 rotates synchronously with the power input member 100, and the first damping member 310 is compressed but not reached the compression limit, thereby preventing the first damping member 310 from being over-compressed and failing. Optionally, the limiting structure is arranged between the power input member 100 and the first power transmission member 210.

[0075] In an embodiment of the present utility model, the limiting structure includes a limiting convex portion and a limiting concave portion that cooperates with the limiting convex portion. One of the power transmission structure 200 and the power input member 100 is provided with the limiting convex portion, and the other of the power transmission structure 200 and the power input member 100 is provided with the limiting concave portion.

[0076] Specifically, the limiting structure includes a limiting convex portion and a limiting concave portion. When the power input member 100 rotates to a predetermined angle, the limiting convex portion snaps into the limiting concave portion, and the power input member 100 and the power transmission structure 200 remain relatively fixed and can rotate synchronously. Through the cooperation mode of the limiting convex portion and the limiting concave portion, the structure is simple. Optionally, the limiting convex portion is arranged on the power input member 100, and the limiting concave portion is arranged on the first power transmission member 210; or, the limiting convex portion is arranged on the first power transmission member 210, and the limiting concave portion is arranged on the power input member 100. Of course, in other embodiments, the limiting structure may also include two limiting members, and the power input member 100 and the first power transmission member 210 are respectively provided with a limiting member. When the power input member 100 rotates to a predetermined angle, the two limiting members abut against each other, thereby restricting the power input member 100 from further compressing the first damping member 310.

[0077] In an embodiment of the present utility model, referring to Figure 2 and Figure 3 , the power input member 100 includes:

[0078] An input seat 110 having an internal spline for connecting to a rotation source; and

[0079] A turntable 120 arranged on the side of the input seat 110 facing the power transmission structure 200. The turntable 120 is connected to the power transmission structure 200 through the first damping member 310.

[0080] Specifically, the power input member 100 includes an input seat 110 and a turntable 120. The input seat 110 is provided with an internal spline. The rotating shaft of the motor is inserted into the input seat 110 and fixed through the internal spline. The turntable 120 is arranged on one side of the input seat 110 and is fixedly connected to the input seat 110. The first damping member 310 connects the turntable 120 and the first power transmission member 210.

[0081] The working process of the torque damping component proposed by the present utility model is as follows:

[0082] When the vehicle speed is relatively stable, the fluctuation of the motor output is small, and the torque change is also small, which can only overcome the damping force of the first damping member. The acting force of the first damping member acts on the first power transmission member and the second power transmission member. However, due to the acting force being too small, it cannot overcome the damping force of the second damping force. At the same time, the acting force of the first damping member will act on the power input member in the reverse direction, and then act on the motor output shaft in the reverse direction, reducing the rotational speed fluctuation of the motor at the next moment and improving the stability of the motor output.

[0083] When the vehicle is starting, getting out of trouble or for other reasons resulting in a large mutation in the motor torque and rotational speed, at this time, the fluctuation of the motor output is large, far exceeding the damping force of the first damping member (but the first damping member is not compressed to the limit and fails). At this time, the transmission force is transmitted to the second power transmission member through the first power transmission member and acts on the second damping member. The second damping member absorbs the mutation energy and then releases the energy to the power output member. At the same time, the acting force of the second damping member will act on the motor output shaft in the reverse direction, reducing the amplitude of the motor output mutation. When the mutation of the motor rotational speed ends, the motor output is in a relatively stable state, the energy release of the second damping member ends, and the first damping member continues to function.

[0084] When the vehicle is at the moment when energy recovery is turned on, the motor output will reverse, and the power output member will continue to rotate forward due to inertia. At this time, it will be subjected to torques in both forward and reverse directions simultaneously. At the moment when energy recovery is turned on, the reverse torque is small, and the second power transmission member will continue to rotate forward; after a period of time, when the motor output torque is equal to the sum of the inertia force of the power output member and the damping force of the second damping member, the power output member will reverse.

[0085] To achieve the above object, an embodiment of the present utility model proposes an electric drive axle, which includes:

[0086] A motor;

[0087] A torque damping component, which includes the torque damping component described above, and the output shaft of the motor is drivingly connected to the power input member. Specifically, for the specific structure of the torque damping component, refer to the above embodiment. Since this electric drive axle adopts all the technical solutions of the above embodiment, it at least has all the beneficial effects brought by the technical solutions of the above embodiment, and will not be elaborated here one by one.

[0088] To achieve the above object, an embodiment of the present utility model provides a vehicle, which includes the electric drive axle described above. Specifically, for the specific structure of the electric drive axle, reference may be made to the above embodiment. Since the vehicle adopts all the technical solutions of the above embodiment, it has at least all the beneficial effects brought by the technical solutions of the above embodiment, which will not be elaborated herein one by one.

[0089] In one embodiment, the vehicle can be a general electric vehicle or an electric heavy truck. The working environment and conditions of an electric heavy truck are relatively complex. By providing the first damping member and the second damping member, the stability of the electric drive axle motor during output can be improved well, and the shifting quality can be enhanced.

[0090] The above description is only an exemplary embodiment of the present utility model, and does not thereby limit the patent scope of the embodiments of the present utility model. Any equivalent structural transformation made under the technical concept of the present utility model by using the content of the specification and drawings of the embodiments of the present utility model, or any direct / indirect application in other related technical fields is included in the patent protection scope of the embodiments of the present utility model.

Claims

1. A torque damping assembly, characterized in that, The torque damping assembly comprises: A power input member for connecting to a rotation source; A power transmission structure, disposed on one side of the power input member; a first damping member, connecting the power input member and the power transmission structure; A power output member for connecting to a target output; and A second damping member connects the power transmission structure and the power output member; wherein the damping force of the first damping member is smaller than the damping force of the second damping member.

2. The torque damping assembly according to claim 1, characterized in that, There are two second damping members, and the directions of the damping forces generated by the two second damping members on the power output member are opposite.

3. The torque damping assembly according to claim 2, wherein, The power transmission structure comprises: a first power transmission member, rotatably disposed on one side of the power input member, wherein the first damping member connects the first power transmission member and the power input member; and The second power transmission member is arranged on a side of the first power transmission member away from the power input member and is fixedly connected to the first power transmission member. The second damping member connects the second power transmission member and the power output member.

4. The torque damping assembly according to claim 3, wherein, The second power transmission member comprises: a first transmission sub-disc, which is disposed on a side of the first power transmission member away from the power input member and is fixedly connected to the first power transmission member; and a second transmission sub-disc, wherein the first transmission sub-disc and the second transmission sub-disc are spaced apart from each other along the axial direction of the power output member and are disposed on both sides of the power output member; Wherein, the first transmission sub-disc and the power output member are connected via a second damping member, and the second transmission sub-disc and the power output member are connected via another second damping member.

5. The torque damping assembly according to claim 4, characterized in that, The power output member comprises: A first output sub-disc is disposed on a side of the first transmission sub-disc away from the first power transmission member, and a second damping member connects the first output sub-disc and the first transmission sub-disc; a second output sub-disk, which is disposed on a side of the first output sub-disk facing the second transfer sub-disk and is fixedly connected to the first output sub-disk, and another second damping member connects the second output sub-disk and the second transfer sub-disk; and The gear ring is sleeved on the outside of the first output sub-disc and the second output sub-disc, and the first output sub-disc and the second output sub-disc are both fixedly connected to the gear ring, and teeth are arranged on the outer circumference of the gear ring.

6. The torque damping assembly according to claim 2, wherein, One of the second damping members is configured as a compression spring, and another of the second damping members is configured as a tension spring; and / or, the first damping member is configured as a spring.

7. The torque damping assembly according to claim 3, wherein, The torque damping assembly further includes an inner lining member, which is disposed between the second power transmission member and the power input member.

8. The torque damping assembly according to claim 1, characterized in that, The torque damping assembly further includes a limiting structure, which is disposed between the power input member and the power transmission structure and is used to limit a rotation angle of the power input member relative to the power transmission structure.

9. The torque damping assembly according to claim 8, wherein, The limiting structure includes a limiting protrusion and a limiting recess matched with the limiting protrusion. One of the power transmission structure and the power input member is provided with the limiting protrusion, and the other of the power transmission structure and the power input member is provided with the limiting recess.

10. The torque damping assembly according to any one of claims 1 to 9, characterized in that, The power input member comprises: An input seat having an internal spline, wherein the internal spline is used to connect to the rotation source; and A turntable is provided on a side of the input seat facing the power transmission structure, and the turntable is connected to the power transmission structure through the first damping member.

11. An electric drive axle, characterized in that, The electric drive axle includes: a motor; a torque damping assembly, the torque damping assembly includes the torque damping assembly according to any one of claims 1 to 10, and an output shaft of the motor is drivingly connected to the power input member.

12. A vehicle, characterized in that, The vehicle includes the electric drive axle according to claim 11.

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