Magnetic ring shock absorber, motor driving assembly and vehicle

Abstract

The utility model relates to a magnetic ring shock absorber, a motor driving assembly and a vehicle, and relates to the technical field of automobiles, the magnetic ring shock absorber comprises a base, a magnetic core module and an iron core module; the base is arranged on a motor driving shaft, and a first mounting cavity and a second mounting cavity are formed in the base; one end of the first mounting cavity is open, the magnetic core module is mounted in the first mounting cavity, and the magnetic core module is detachably connected with the base; one end of the second mounting cavity is open, the iron core module is mounted in the second mounting cavity, and the iron core module is detachably connected with the base; the magnetic ring shock absorber is simple in structure and convenient to disassemble and assemble, EMC performance verification can be carried out according to the scheme that various different magnetic core modules and iron core modules are combined, the magnetic ring shock absorber can be repeatedly used, the time for remanufacturing sample pieces and the part cost are greatly saved, the verification period is effectively shortened, and the efficiency is improved.

Description

Technical Field

[0001] The present application relates to the field of automobile technology, and in particular to a magnetic ring damper, a motor drive assembly and a vehicle. Background Art

[0002] With the development of new energy vehicles, the electromagnetic interference problem brought about by it has become increasingly prominent. The main source of electromagnetic interference is the high-frequency signal generated by the frequent high-speed switching of the control system IGBT (Insulated Gate Bipolar Transistor) power module. The electromagnetic noise of the motor control power supply is mainly transmitted through the motor drive shaft, resulting in the EMC (Electro Magnetic Compatibility) test of the whole vehicle failing to meet the relevant standards. In order to solve the above problems, magnetic ring products have been developed based on the principle that the propagation path of electromagnetic interference is mainly a common-mode signal transmitted along the drive shaft. The current practice is to add a magnetic ring shock absorber to each of the left and right drive shafts of the motor, and then add a filtering function on the basis of the traditional shock absorber to filter out high-frequency signal interference so that the EMC test of the whole vehicle meets the standard requirements.

[0003] The current magnetic ring damper structure mainly includes three parts: the magnetic core assembly, the iron core assembly and the vulcanized rubber shell. The magnetic core assembly and the iron core assembly are coaxially arranged and coated in the vulcanized rubber shell, and the rubber shell is installed on the left and right drive shafts of the motor. However, this structure can only be used for one-time verification. When the filtering performance of the magnetic core assembly or the frequency of the iron core assembly cannot meet the requirements of the vehicle, it is necessary to re-produce the drive shaft assembly sample with the magnetic ring damper device, which increases the cost of parts and the verification matching cycle is too long, affecting efficiency. Utility Model Content

[0004] One of the purposes of the present application is to provide a magnetic ring damper to solve the problem in the prior art that the magnetic ring damper can only be verified once, the verification parts cost is high, and the verification cycle is long; the second purpose is to provide a motor drive assembly; the third purpose is to provide a vehicle.

[0005] In order to achieve the above purpose, the technical solution adopted in this application is as follows:

[0006] A magnetic ring vibration damper comprises: a base, a magnetic core module and an iron core module; the base is arranged on a motor drive shaft, and a first installation cavity and a second installation cavity are formed inside the base; one end of the first installation cavity is open, the magnetic core module is installed in the first installation cavity, and the magnetic core module is detachably connected to the base; one end of the second installation cavity is open, the iron core module is installed in the second installation cavity, and the iron core module is detachably connected to the base.

[0007] According to the above technical means, both the first installation cavity and the second installation cavity have open ends, and the magnetic core module and the iron core module are detachably installed in the first installation cavity and the second installation cavity respectively. When the EMC performance or NVH (Noise, Vibration, Harshness) performance of the magnetic ring shock absorber does not meet the needs of the whole vehicle and needs to be adjusted, the magnetic core module or the iron core module can be easily removed from the base through the open end of the first installation cavity or the second installation cavity, and the magnetic core module with different inductance and impedance characteristics or the iron core module with different weight and frequency can be quickly replaced, thereby facilitating the matching verification of multiple schemes without the need to re-make samples, saving verification parts resources while greatly shortening the verification cycle and improving verification efficiency.

[0008] Optionally, the magnetic core module includes a magnetic core, the shape of the magnetic core is set to be annular, and the magnetic core is coaxially arranged with the base; the iron core module includes an iron core, the shape of the iron core is set to be annular, and the iron core is coaxially arranged with the base.

[0009] Optionally, the magnetic core module includes a plurality of magnetic cores, which are evenly spaced and distributed around the axis of the base; the iron core module includes a plurality of iron cores, which are evenly spaced and distributed around the axis of the base.

[0010] According to the above technical means, multiple magnetic cores and multiple iron cores are arranged in an interval distribution manner, so the multiple magnetic cores and multiple iron cores are independent of each other. Compared with an entire circular magnetic core and an entire circular iron core, they will not be restricted by the accessories at the end of the shaft rod during disassembly and assembly, and can be directly removed and replaced on the spot from the base, eliminating the steps of disassembling and assembling the accessories at the end of the shaft rod, and the operation is more convenient; in addition, the multiple magnetic cores and multiple iron cores are evenly distributed around the axis of the base, which is beneficial to the force balance of the structure and to ensuring the stability of the motor drive shaft during rotation.

[0011] Optionally, the magnetic core module includes two magnetic cores, the shape of the magnetic cores is set to be semi-annular, and the two magnetic cores are symmetrically distributed; the iron core module includes two iron cores, the shape of the iron cores is set to be semi-annular, and the two iron cores are symmetrically distributed.

[0012] According to the above technical means, the two semi-annular magnetic cores and the two semi-annular iron cores have a simple shape and structure. Compared with a whole circular magnetic core and a whole circular iron core, there is no need to repeatedly disassemble and assemble the accessories at the end of the motor drive shaft during replacement, which further improves the convenience of disassembly and assembly of the magnetic core module and the iron core module; the symmetrical distribution method makes the structure evenly distributed in force, which is beneficial to ensure the stability of the motor drive shaft during rotation.

[0013] Furthermore, the magnetic ring vibration damper also includes a first limiting structure and a second limiting structure; the first limiting structure is arranged between the magnetic core module and the first mounting cavity, and the first limiting structure is used to limit the relative rotation between the magnetic core module and the base; the second limiting structure is arranged between the core module and the second mounting cavity, and the second limiting structure is used to limit the relative rotation between the core module and the base.

[0014] According to the above technical means, a first limiting structure and a second limiting structure are set to prevent the magnetic core module and the iron core module from rotating relative to the base when the motor drive shaft rotates, thereby ensuring that the installation of the magnetic core module and the iron core module is stable and reliable, and ensuring the smooth rotation of the motor drive shaft.

[0015] Optionally, the first limiting structure includes a plurality of first ridges arranged on the magnetic core module and a plurality of first grooves arranged in the first mounting cavity, and the plurality of first ridges are adapted to the plurality of first grooves; the second limiting structure includes a plurality of second ridges arranged on the magnetic core module and a plurality of second grooves arranged in the second mounting cavity, and the plurality of second ridges are adapted to the plurality of second grooves.

[0016] According to the above technical means, the magnetic core module can be firmly installed in the first installation cavity through the convex-concave cooperation between the first ridge and the first groove, and the iron core module can be firmly installed in the second installation cavity through the convex-concave cooperation between the second ridge and the second groove, thereby preventing the magnetic core module and the iron core module from rotating relative to the base when the motor drive shaft rotates.

[0017] Furthermore, the magnetic core module is interference fit with the base, and the iron core module is interference fit with the base.

[0018] According to the above technical means, the interference fit method can improve the installation firmness of the magnetic core module and the iron core module, prevent loosening, and ensure the reliability of the magnetic ring damper structure during the rotation of the motor drive shaft.

[0019] Furthermore, the material of the base includes rubber.

[0020] According to the above technical means, rubber has good elasticity, can adapt to a certain range of dimensional deviations and deformations, and is easy to assemble and adjust. At the same time, it can also reduce the mechanical wear on the magnetic core module and the iron core module and extend the service life of the parts.

[0021] A motor drive assembly includes a motor drive shaft and the magnetic ring vibration damper as described above.

[0022] A vehicle comprises the magnetic ring damper as described above, or comprises the motor drive assembly as described above.

[0023] Beneficial effects of this application:

[0024] (1) The magnetic ring damper described in the present application comprises a base, a magnetic core module and an iron core module; the base is arranged on the motor drive shaft, and a first installation cavity and a second installation cavity are formed inside the base; one end of the first installation cavity is open, the magnetic core module is installed in the first installation cavity, and the magnetic core module is detachably connected to the base; one end of the second installation cavity is open, the iron core module is installed in the second installation cavity, and the iron core module is detachably connected to the base. In the present application, since the first installation cavity and the second installation cavity both have open ends, the magnetic core module and the iron core module are detachably installed in the first installation cavity and the second installation cavity, respectively. Therefore, when the EMC performance or NVH performance of the magnetic ring damper does not meet the requirements of the vehicle and needs to be adjusted, the magnetic core module or the iron core module can be easily removed from the base, and the magnetic core modules with different inductance and impedance characteristics or the iron core modules with different weights and frequencies can be quickly replaced to perform matching verification of multiple schemes, which greatly saves the time cost and parts resources of remaking samples, shortens the verification cycle, improves the verification efficiency, and has strong versatility and practicality.

[0025] (2) The magnetic ring damper described in the present application, the magnetic core module includes two magnetic cores, the shape of the magnetic core is set to be semi-annular, and the two magnetic cores are symmetrically distributed; the iron core module includes two iron cores, the shape of the iron core is set to be semi-annular, and the two iron cores are symmetrically distributed; in the present application, both the magnetic core and the iron core adopt a semi-annular structure and the number is set to two. When performing EMC performance verification, the semi-annular magnetic core and the iron core can be directly removed and replaced from the base. Compared with the circular ring structure, there is no need to repeatedly disassemble and assemble the accessories at the end of the motor drive shaft, which further improves the convenience of disassembly and assembly of the magnetic core module and the iron core module, and improves the verification efficiency; in addition, the two magnetic cores and the two iron cores are arranged in a symmetrical distribution manner, so that the force distribution of the structure is uniform, which is beneficial to ensure the stability of the motor drive shaft during rotation and avoid the vibration and noise caused by the unbalanced force on the motor drive shaft.

[0026] (3) The magnetic ring vibration damper described in the present application also includes a first limiting structure and a second limiting structure; the first limiting structure is arranged between the magnetic core module and the first installation cavity, and the first limiting structure is used to limit the relative rotation between the magnetic core module and the base; the second limiting structure is arranged between the iron core module and the second installation cavity, and the second limiting structure is used to limit the relative rotation between the iron core module and the base; by setting the first limiting structure and the second limiting structure, the present application can prevent the magnetic core module and the iron core module from rotating relative to the base when the motor drive shaft rotates, thereby ensuring that the installation of the magnetic core module and the iron core module is stable and reliable, and ensuring the smooth rotation of the motor drive shaft. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 An exploded view of the magnetic ring vibration damper described in this application;

[0028] Figure 2 This is a schematic diagram of the structure of the base in the magnetic ring vibration damper described in this application;

[0029] Figure 3 A cross-sectional view of a base in the magnetic ring vibration damper described in the present application;

[0030] Figure 4 This is a schematic structural diagram of a second ridge on the iron core of the magnetic ring vibration damper described in the present application.

[0031] Among them, 1, base; 11, first installation cavity; 12, second installation cavity; 121, second groove; 13, shaft rod installation hole; 2, magnetic core module; 3, iron core module; 31, second convex edge. DETAILED DESCRIPTION

[0032] The following will describe the implementation methods of the present application with reference to the accompanying drawings and preferred embodiments. Those skilled in the art can easily understand other advantages and effects of the present application from the contents disclosed in this specification. The present application can also be implemented or applied through other different specific implementation methods, and the details in this specification can also be modified or changed in various ways based on different viewpoints and applications without departing from the spirit of the present application. It should be understood that the preferred embodiments are only for illustrating the present application, not for limiting the scope of protection of the present application.

[0033] It should be noted that the illustrations provided in the following embodiments are only schematic illustrations of the basic concept of the present application, and thus the drawings only show components related to the present application rather than being drawn according to the number, shape and size of components in actual implementation. In actual implementation, the type, quantity and proportion of each component may be changed at will, and the component layout may also be more complicated.

[0034] In the related technology, the current magnetic ring damper structure mainly includes three parts: a magnetic core assembly, an iron core assembly and a vulcanized rubber shell, wherein the magnetic core assembly and the iron core assembly are coaxially arranged and coated in a vulcanized rubber shell, and the rubber shell is installed on the left and right drive shafts of the motor. However, this structure can only be used for one-time verification. When the filtering performance of the magnetic core assembly or the frequency of the iron core assembly cannot meet the requirements of the whole vehicle, it is necessary to re-produce the drive shaft assembly sample with the magnetic ring damper device, which increases the cost of verification parts and prolongs the verification matching cycle, affecting the verification efficiency.

[0035] In view of this, this embodiment proposes a magnetic ring vibration damper.

[0036] See also Figure 1 and Figure 3 , a magnetic ring vibration damper, comprising a base 1, a magnetic core module 2 and an iron core module 3; the base 1 is arranged on the motor drive shaft, and a first installation cavity 11 and a second installation cavity 12 are formed inside the base 1; one end of the first installation cavity 11 is open, the magnetic core module 2 is installed in the first installation cavity 11, and the magnetic core module 2 is detachably connected to the base 1; one end of the second installation cavity 12 is open, the iron core module 3 is installed in the second installation cavity 12, and the iron core module 3 is detachably connected to the base 1.

[0037] Specifically, the base 1 is cylindrical in shape, and a shaft mounting hole 13 is opened at the axis center of the base 1. The size of the shaft mounting hole 13 is adapted to the size of the motor drive shaft shaft. The base 1 can be installed on the shaft of the motor drive shaft through the shaft mounting hole 13, and then the base 1 and the motor drive shaft can be locked and fixed using a locking structure such as a clamp. In this way, when the motor drive shaft rotates, the base 1 can rotate synchronously with the motor drive shaft.

[0038] The base 1 is internally formed with a first installation cavity 11 and a second installation cavity 12, wherein the shape and size of the first installation cavity 11 are adapted to the shape and size of the magnetic core module 2, and is used to install the magnetic core module 2; the shape and size of the second installation cavity 12 are adapted to the shape and size of the iron core module 3, and is used to install the iron core module 3. The first installation cavity 11 and the second installation cavity 12 both have an open end. In this embodiment, the open end of the first installation cavity 11 and the open end of the second installation cavity 12 are respectively arranged on different sides of the base 1. Specifically, as shown in FIG. Figure 3 As shown, the opening end of the first installation cavity 11 and the opening end of the second installation cavity 12 are respectively located at two ends of the cylindrical base 1 , the magnetic core module 2 is detachably installed in the first installation cavity 11 , and the iron core module 3 is detachably installed in the second installation cavity 12 .

[0039] For the magnetic core module 2, different magnetic core materials have different inductance and impedance characteristics. Therefore, before conducting EMC performance and NVH performance matching tests, multiple groups of magnetic core modules 2 with different inductance and impedance characteristics can be produced by adjusting the magnetic core material formula; for the iron core module 3, changing the shape and size of the iron core module 3 can affect its magnetic permeability and hysteresis characteristics, thereby changing its frequency of influence on the AC signal. Therefore, in actual operation, on the basis of ensuring that the outer dimensions of the iron core module 3 remain unchanged (ensuring the adaptation of the iron core module 3 to the second installation cavity 12), the cross-sectional area and cross-sectional shape of the iron core module 3 can be changed by digging holes inside the iron core module 3, thereby producing multiple groups of iron core modules 3 with different weights and frequencies. After installing different magnetic core modules 2 and iron core modules 3 in combination in the base 1, a variety of magnetic ring damper samples with different schemes can be obtained.

[0040] Since the first installation cavity 11 and the second installation cavity 12 both have open ends, the magnetic core module 2 and the iron core module 3 are respectively installed in the first installation cavity 11 and the second installation cavity 12 in a detachable installation manner. Therefore, when the EMC performance or NVH performance of the magnetic ring shock absorber does not meet the needs of the whole vehicle and needs to be adjusted, the original magnetic core module 2 or the iron core module 3 can be easily and quickly removed from the base 1, and directly replaced with a magnetic core module 2 with different inductance and impedance characteristics or an iron core module 3 with different weight and frequency for matching verification. That is, the same base 1 can carry a variety of different combinations of magnetic core modules 2 and iron core modules 3 for verification, and can be reused, which greatly saves the time and parts cost of making samples, shortens the verification cycle, and improves efficiency.

[0041] Optionally, the magnetic core module 2 includes a magnetic core, the shape of the magnetic core is set to be annular, and the magnetic core is coaxially arranged with the base 1; the iron core module 3 includes an iron core, the shape of the iron core is set to be annular, and the iron core is coaxially arranged with the base 1.

[0042] In an optional embodiment, the magnetic core module 2 includes a magnetic core, and the iron core module 3 includes an iron core. The shapes of the magnetic core and the iron core are both set to be annular and coaxial with the base 1; correspondingly, the shapes of the first installation cavity 11 and the second installation cavity 12 are also set to be annular and coaxially arranged on the outer periphery of the shaft mounting hole 13. In practical applications, after the magnetic ring damper is installed on the motor drive shaft, other accessories are still required to be set at the end of the motor drive shaft. Therefore, when the EMC performance or NVH performance does not meet the requirements of the whole vehicle and a different magnetic core module 2 or iron core module 3 needs to be replaced, it is necessary to first remove the accessories at the end of the motor drive shaft, and then remove and replace the magnetic core module 2 or iron core module 3 inside the base 1.

[0043] Optionally, the magnetic core module 2 includes a plurality of magnetic cores, which are evenly spaced and distributed around the axis of the base 1 ; the iron core module 3 includes a plurality of iron cores, which are evenly spaced and distributed around the axis of the base 1 .

[0044] In another optional embodiment, the magnetic core module 2 includes a plurality of magnetic cores, which are evenly spaced around the axis of the base 1, and the iron core module 3 includes a plurality of iron cores, which are evenly spaced around the axis of the base 1; correspondingly, the first installation cavity 11 may include a plurality of first sub-cavities, the shape and size of the first sub-cavities are adapted to the magnetic cores, and the second installation cavity 12 may include a plurality of second sub-cavities, the shape and size of the second sub-cavities are adapted to the iron cores. Since the plurality of magnetic cores and the plurality of iron cores are arranged in an interval distribution manner, the plurality of magnetic cores and the plurality of iron cores are independent of each other. Compared with an entire annular magnetic core and an entire annular iron core, they will not be restricted by the accessories at the end of the shaft during disassembly and assembly, and can be directly removed and replaced on the spot from the base 1, eliminating the steps of disassembling and assembling the accessories at the end of the shaft, and making the operation more convenient.

[0045] In addition, multiple magnetic cores and multiple iron cores are evenly distributed around the axis of the base 1, which is beneficial to the force balance of the structure, and is beneficial to ensuring the stability of the motor drive shaft during rotation, avoiding vibration and noise caused by shaking of the motor drive shaft during rotation.

[0046] Optionally, the magnetic core module 2 includes two magnetic cores, the shape of the magnetic cores is set to be semi-annular, and the two magnetic cores are symmetrically distributed; the iron core module 3 includes two iron cores, the shape of the iron cores is set to be semi-annular, and the two iron cores are symmetrically distributed.

[0047] See also Figure 1 and Figure 2 As an example, in this embodiment, the magnetic core module 2 includes two magnetic cores, the inductance and impedance characteristics of the two magnetic cores are the same, the shape is semi-annular, and the two magnetic cores are symmetrically distributed about the shaft mounting hole 13, and accordingly, the first mounting cavity 11 may include two semi-annular first sub-cavities adapted to the magnetic core; the iron core module 3 includes two iron cores, the weight and frequency of the two iron cores are the same, the shape is semi-annular, and the two iron cores are symmetrically distributed about the shaft mounting hole 13, and accordingly, the second mounting cavity 12 may include two semi-annular second sub-cavities adapted to the iron core. By setting two semi-annular magnetic cores and two semi-annular iron cores, compared with a whole circular magnetic core and a whole circular iron core, when replacing, there is no need to repeatedly disassemble and assemble the accessories at the end of the motor drive shaft, which further improves the convenience of disassembly and assembly of the magnetic core module 2 and the iron core module 3 and improves the verification efficiency.

[0048] In addition, the two magnetic cores and the two iron cores are arranged in a symmetrical distribution manner, so that the force distribution of the structure is uniform, which is beneficial to ensure the stability of the motor drive shaft during rotation and avoid vibration and noise caused by unbalanced force on the motor drive shaft.

[0049] Furthermore, the magnetic ring vibration damper also includes a first limiting structure and a second limiting structure; the first limiting structure is arranged between the magnetic core module 2 and the first mounting cavity 11, and the first limiting structure is used to limit the relative rotation between the magnetic core module 2 and the base 1; the second limiting structure is arranged between the iron core module 3 and the second mounting cavity 12, and the second limiting structure is used to limit the relative rotation between the iron core module 3 and the base 1.

[0050] Through the above technical scheme, a first limiting structure and a second limiting structure are set to prevent the magnetic core module 2 and the iron core module 3 from rotating relative to the base 1 when the motor drive shaft rotates, thereby ensuring that the installation of the magnetic core module 2 and the iron core module 3 is stable and reliable, and ensuring the smooth rotation of the motor drive shaft.

[0051] Optionally, the first limiting structure includes a plurality of first ridges arranged on the magnetic core module 2 and a plurality of first grooves arranged in the first mounting cavity 11, and the plurality of first ridges are adapted to the plurality of first grooves; the second limiting structure includes a plurality of second ridges 31 arranged on the core module 3 and a plurality of second grooves 121 arranged in the second mounting cavity 12, and the plurality of second ridges 31 are adapted to the plurality of second grooves 121.

[0052] Specifically, in this embodiment, the first limiting structure includes a plurality of first ridges arranged on the outer periphery of the magnetic core and a plurality of first grooves arranged on the inner wall of the first sub-cavity. When the magnetic core is installed, the plurality of first ridges correspond one-to-one with the plurality of first grooves, and the stable installation of the magnetic core in the first sub-cavity is achieved through the convex-concave cooperation, thereby preventing the magnetic core from rotating relative to the base 1 when the motor drive shaft rotates; the second limiting structure includes a plurality of second ridges 31 arranged on the outer periphery of the iron core and a plurality of second grooves 121 arranged on the inner wall of the second sub-cavity. When the iron core is installed, the plurality of second ridges 31 correspond one-to-one with the plurality of second grooves 121, and the stable installation of the iron core in the second sub-cavity is achieved through the convex-concave cooperation, thereby preventing the iron core from rotating relative to the base 1 when the motor drive shaft rotates.

[0053] For the convenience of processing, the first convex ridge can be arranged on the outer ring side of the semi-annular magnetic core, and correspondingly, the first groove is also arranged on the outer ring side of the semi-annular first sub-cavity; similarly, Figure 4 and Figure 2 As shown, the second ridge 31 can also be arranged on the outer ring side of the semi-annular core, and correspondingly, the second groove 121 is also arranged on the outer ring side of the semi-annular second sub-cavity.

[0054] In practical applications, the specific sizes and quantities of the first ridge and the first groove, the second ridge 31 and the second groove 121 can be flexibly arranged according to actual needs. As an example, the number of the first ridge and the first groove can be set to 3 to 4 respectively, and the number of the second ridge 31 and the second groove 121 can also be set to 3 to 4 respectively.

[0055] Furthermore, the magnetic core module 2 is interference fit with the base 1 , and the iron core module 3 is interference fit with the base 1 .

[0056] Specifically, the size of the magnetic core module 2 is slightly larger than the size of the first installation cavity 11, so that the magnetic core module 2 needs to be loaded into the first installation cavity 11 when assembled, so as to achieve an interference fit between the magnetic core module 2 and the base 1; similarly, the size of the iron core module 3 is also slightly larger than the size of the second installation cavity 12, so that the iron core module 3 also needs to be loaded into the second installation cavity 12 when assembled, so as to achieve an interference fit between the iron core module 3 and the base 1. The installation method using interference fit can improve the tightness of the connection, prevent loosening, and ensure the reliability of the magnetic ring damper structure during the rotation of the motor drive shaft.

[0057] Furthermore, the material of the base 1 includes rubber.

[0058] Specifically, the rubber has good elasticity and can be elastically deformed when installing and disassembling the magnetic core module 2 and the iron core module 3, making the disassembly operation more convenient and easy, which is beneficial to reducing the mechanical wear of the magnetic core module 2 and the iron core module 3. At the same time, the rubber can also adapt to a certain range of dimensional deviations and deformations, making it easy to assemble and adjust.

[0059] The magnetic ring vibration damper provided in the embodiment of the present application can quickly implement multi-solution verification in the early stage of the problem, output a more accurate magnetic ring vibration damper solution through experimental verification, clarify the engineering solution, and then carry out engineering mold processing, saving verification part resources, while helping to shorten the verification cycle and improve the verification efficiency of the magnetic ring vibration damper solution. It has strong versatility and practicality and can be effectively promoted and applied.

[0060] An embodiment of the present application also provides a motor drive assembly, including a motor drive shaft and the magnetic ring vibration damper as described above.

[0061] The motor drive assembly, since it is equipped with the above-mentioned magnetic ring vibration damper, its magnetic core module 2, iron core module 3 and base 1 are convenient and flexible to disassemble. When the EMC performance of the magnetic ring vibration damper does not meet the requirements of the whole vehicle, a different magnetic core module 2 or iron core module 3 can be quickly replaced for matching verification, thereby ultimately ensuring good electromagnetic compatibility performance of the whole vehicle.

[0062] An embodiment of the present application also provides a vehicle, comprising the magnetic ring shock absorber as described above, or comprising the motor drive assembly as described above.

[0063] The advantages of the vehicle over the prior art are the same as those of the above-mentioned magnetic ring shock absorber and motor drive assembly, which will not be elaborated here.

[0064] The above embodiments are only preferred embodiments for fully illustrating the present application, and the protection scope of the present application is not limited thereto. Any equivalent substitution or change made by a person skilled in the art based on the present application is within the protection scope of the present application.

Claims

1. A magnetic ring vibration damper, characterized in that: include: Base, magnetic core module and iron core module; The base is arranged on the motor drive shaft, and a first installation cavity and a second installation cavity are formed inside the base; One end of the first installation cavity is open, the magnetic core module is installed in the first installation cavity, and the magnetic core module is detachably connected to the base; One end of the second installation cavity is open, the core module is installed in the second installation cavity, and the core module is detachably connected to the base.

2. The magnetic ring vibration damper according to claim 1, characterized in that: The magnetic core module comprises a magnetic core, the shape of the magnetic core is set to be annular, and the magnetic core is coaxially arranged with the base; The core module includes an iron core, the shape of the iron core is set to be annular, and the iron core is coaxially arranged with the base.

3. The magnetic ring vibration damper according to claim 1, characterized in that: The magnetic core module includes a plurality of magnetic cores, and the plurality of magnetic cores are evenly spaced and distributed around the axis of the base; The iron core module includes a plurality of iron cores, and the plurality of iron cores are evenly spaced and distributed around the axis of the base.

4. The magnetic ring vibration damper according to claim 3, characterized in that: The magnetic core module includes two magnetic cores, the shape of the magnetic core is set to be semi-ring-shaped, and the two magnetic cores are symmetrically distributed; The core module includes two cores, the shape of the cores is set to be semi-ring-shaped, and the two cores are symmetrically distributed.

5. The magnetic ring vibration damper according to claim 1, characterized in that: The magnetic ring vibration damper also includes a first limiting structure and a second limiting structure; The first limiting structure is disposed between the magnetic core module and the first mounting cavity, and the first limiting structure is used to limit the relative rotation between the magnetic core module and the base; The second limiting structure is disposed between the core module and the second mounting cavity, and the second limiting structure is used to limit relative rotation between the core module and the base.

6. The magnetic ring vibration damper according to claim 5, characterized in that: The first limiting structure includes a plurality of first ridges arranged on the magnetic core module and a plurality of first grooves arranged in the first installation cavity, and the plurality of first ridges are adapted to the plurality of first grooves; The second limiting structure includes a plurality of second ridges arranged on the core module and a plurality of second grooves arranged in the second installation cavity, and the plurality of second ridges are matched with the plurality of second grooves.

7. The magnetic ring vibration damper according to claim 1, characterized in that: The magnetic core module is interference fit with the base, and the iron core module is interference fit with the base.

8. The magnetic ring vibration damper according to claim 1, characterized in that: The material of the base includes rubber.

9. A motor drive assembly, comprising a motor drive shaft, characterized in that: It also includes a magnetic ring vibration damper as described in any one of claims 1-8.

10. A vehicle, characterized in that: It comprises the magnetic ring vibration damper as described in any one of claims 1 to 8, or comprises the motor drive assembly as described in claim 9.

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