New energy vehicle drive motor with active damping structure

Abstract

This invention discloses a new energy vehicle drive motor with an active vibration damping structure, relating to the field of new energy vehicle technology. This new energy vehicle drive motor with an active vibration damping structure, through the cooperation of the mounting bracket and bearing housing, allows the motor body to perform basic vibration isolation through bearing pads during operation, achieving a vibration reduction effect. Simultaneously, through the cooperation of the voice coil motor, it can synchronously complete the active correction of output shaft eccentricity and the suppression of motor body vibration. This ensures the vibration reduction effect of the motor body during operation and prevents excessive vibration amplitude from increasing coaxial error, thus ensuring the active vibration damping effect while reducing transmission losses caused by output shaft eccentricity and guaranteeing transmission efficiency.

Description

Technical Field

[0001] This invention relates to the field of new energy vehicle technology, specifically to a new energy vehicle drive motor with an active shock absorption structure. Background Technology

[0002] New energy vehicles refer to automobiles that use unconventional vehicle fuels as a power source and integrate advanced technologies in vehicle power control and drive, resulting in vehicles with advanced technical principles, new technologies, and new structures. The drive motor is the core component of the new energy vehicle industry, with permanent magnet synchronous motors as the mainstream, which combine high power density and high efficiency. Referring to the Chinese patent, "Protective Shell for Drive Motor of New Energy Vehicle" with publication number "CN113472135B", this patent points out that the protection of existing motors is insufficient, which leads to damage to the motor when it is impacted. At the same time, the long-term vibration during motor rotation causes the motor to deviate and be damaged, affecting the driving of the vehicle. Furthermore, the use of a protective shell results in insufficient heat dissipation, leading to excessively high motor temperature. The aforementioned equipment protects the motor by buffering it when it is impacted, and also reduces the vibration of the motor. However, the motor working in this way lacks active shock absorption, which leads to an increase in the coaxial error between the output end and the reducer when the vehicle body drives the motor to vibrate. This results in eccentricity during assembly and operation, and aggravates wear and vibration. In response, we propose a new energy vehicle drive motor with an active shock absorption structure to solve the above problems. Summary of the Invention

[0003] To address the shortcomings of existing technologies, this invention provides a new energy vehicle drive motor with an active shock absorption structure, solving the problems mentioned in the background section.

[0004] To achieve the above objectives, the present invention is implemented through the following technical solution: a new energy vehicle drive motor with an active shock absorption structure, including a motor body, an output shaft connected to the end of the motor body, an assembly shell fixedly installed on the outside of the motor body, and a bearing pad fixedly installed between the assembly shell and the motor body. An end shell is fixedly installed at the end of the assembly housing, and a bearing seat is fixedly installed on the inner side of the end shell. A bearing body is rotatably connected inside the bearing seat. The bearing body is sleeved on the outside of the output shaft and keeps coaxial with it. An annular limiting shim is fixedly installed between the bearing seat and the assembly housing to allow the bearing seat to make a small radial displacement with the vibration of the motor body. An annular positioning frame is fixedly installed on the inner side of the end shell. Multiple voice coil motors are symmetrically installed on the inner side of the annular positioning frame. The ends of the voice coil motors are fixedly connected to the annular positioning frame. A protective gasket is fixedly installed on the output end of the voice coil motor and is fixedly connected to the outer side of the bearing seat through the protective gasket. This is used to output linearly controllable radial thrust as the motor body vibrates, thereby realizing active micro-displacement compensation and vibration suppression.

[0005] Preferably, the outer side of the bearing housing is symmetrically provided with multiple wedge-shaped slots, and a sliding block is slidably connected inside the wedge-shaped slots. Multiple positioning end rods are fixedly installed on the inner side of the annular positioning frame. The installation position of the positioning end rods is adapted to the opening position of the wedge-shaped slots. A disc spring is fixedly installed at the end of the positioning end rod, and one end of the disc spring is in contact with the sliding block.

[0006] Preferably, a limiting hole is provided on the side of the sliding block near the disc spring, and the end of the disc spring is located inside the limiting hole to limit the movement of the disc spring.

[0007] Preferably, the end with a deeper wedge-shaped groove is located near the annular limiting pad, and the end with a shallower wedge-shaped groove is located near the motor body.

[0008] Preferably, a plurality of sealing brackets are fixedly installed on the outer side of the bearing housing, and the installation positions of the plurality of sealing brackets are respectively located on the outer side of the corresponding wedge-shaped groove. An elastic sealing membrane is fixedly installed on the outer side of the sealing bracket, and a disc spring passes through the corresponding elastic sealing membrane. Lubricating oil is stored inside the wedge-shaped groove.

[0009] Preferably, an annular liquid guide frame is fixedly installed inside the end shell, and interconnected liquid guide ends are fixedly installed on the outer side of the annular liquid guide frame. The ends of the liquid guide ends protrude out of the end shell, and a connecting pipe is connected between the annular liquid guide frame and multiple sealing baffles for conveying lubricating oil to the corresponding wedge-shaped groove through the connecting pipe.

[0010] Preferably, a concave liquid guiding pipe is fixedly installed on the outer side of the sealing baffle, and the connecting pipe is fixedly connected to the middle position of the corresponding concave liquid guiding pipe.

[0011] Preferably, the initial position of the sliding block is located in the middle of the corresponding wedge-shaped groove.

[0012] Preferably, multiple displacement sensor modules are fixedly installed on the inner side of the bearing housing. The multiple displacement sensor modules are symmetrically distributed on the outer circumference of the output shaft and are used to detect the radial eccentric displacement of the output shaft.

[0013] Preferably, a plurality of mounting brackets are fixedly installed on the outer side of the assembly housing for fixing the assembly housing to the vehicle frame.

[0014] This invention provides a new energy vehicle drive motor with an active shock absorption structure. Compared with the prior art, it has the following advantages: (1) The new energy vehicle drive motor with active vibration damping structure can complete the basic vibration isolation operation through the cooperation of the mounting frame and bearing seat during the operation of the motor body, thereby achieving the vibration reduction effect. At the same time, through the cooperation of the voice coil motor, the output shaft eccentricity active correction and the vibration suppression of the motor body can be completed simultaneously. On the one hand, the vibration reduction effect of the motor body during operation is guaranteed, and on the other hand, the excessive vibration amplitude of the motor body can be avoided, which leads to the expansion of coaxial error. While ensuring the active vibration damping effect, the transmission loss caused by the output shaft eccentricity is reduced, thus ensuring the transmission effect.

[0015] (2) The new energy vehicle drive motor with active vibration damping structure can compensate for the wear gap of the bearing housing contact surface through the cooperation of the wedge-shaped slot, the sliding block and the disc spring, so that the bearing housing can always maintain uniform force and avoid the phenomenon of swaying caused by the wear of the bearing housing or the force causing the gap to increase. At the same time, it can ensure that the radial force applied by the voice coil motor can be accurately applied to the eccentric direction, effectively alleviate the high-frequency vibration of the bearing housing and reduce the wear rate of the bearing housing.

[0016] (3) The new energy vehicle drive motor with active shock absorption structure can prevent lubricating oil leakage and prevent external debris from entering the wedge groove and affecting the sliding effect of the sliding block through the cooperation between the sealing baffle and the elastic sealing membrane. At the same time, through the cooperation of the annular liquid guide, it is easy to introduce lubricating oil into the multiple wedge grooves, further improving the sliding effect of the sliding block inside the wedge groove. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 For the present invention Figure 1 Schematic diagram of cross-section structure; Figure 3 For the present invention Figure 2 Enlarged structural diagram at point A in the middle; Figure 4 This is a schematic diagram of the cross-sectional structure of the end shell of the present invention; Figure 5 For the present invention Figure 4 Enlarged structural diagram at point B; Figure 6 This is a schematic cross-sectional view of the bearing housing structure of the present invention; Figure 7 For the present invention Figure 6 Enlarged structural diagram at point C; Figure 8 This is a cross-sectional view of the sealing baffle structure of the present invention.

[0018] In the diagram: 1. Motor body; 101. Output shaft; 102. Bearing pad; 2. Assembly housing; 201. Assembly frame; 202. End shell; 3. Bearing seat; 301. Positioning bolt; 302. Displacement sensor module; 4. Bearing body; 5. Annular limit pad; 6. Annular positioning frame; 7. Voice coil motor; 701. Protective pad; 8. Positioning end rod; 9. Disc spring; 10. Wedge groove; 1001. Sliding block; 11. Sealing baffle; 1101. Elastic sealing membrane; 12. Connecting pipe; 1201. Concave liquid guiding pipe; 13. Annular liquid guiding frame; 1301. Liquid guiding end. Detailed Implementation

[0019] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0020] Please see Figures 1-8 The present invention provides two technical solutions, specifically including the following embodiments: Example 1: In this embodiment of the invention, a new energy vehicle drive motor with an active shock absorption structure includes a motor body 1, an output shaft 101 connected to the end of the motor body 1, an assembly housing 2 fixedly installed on the outside of the motor body 1, and a bearing pad 102 fixedly installed between the assembly housing 2 and the motor body 1. The assembly housing 2 is equipped with a heat dissipation module to ensure the heat dissipation effect of the motor body 1. The heat dissipation module is an existing water-cooled heat dissipation device, which consists of a water-cooled coil. The water-cooled coil is assembled around the inner side of the assembly housing 2. The inner wall of the assembly housing 2 is provided with a slot to accommodate the water-cooled coil. The water-cooled heat dissipation device and the water-cooled coil are both existing devices. The water-cooled heat dissipation device and the slot on the inner side of the assembly housing 2 are not shown in the figure. Specifically, the bearing pad 102 is made of elastic material and is used to buffer the force on the motor body 1 when the motor body 1 is assembled to the frame and moves with the vehicle body. The end of the output shaft 101 is connected to the reducer by spline connection, which will not be described in detail here. In this embodiment of the invention, an end shell 202 is fixedly installed at the end of the assembly housing 2, and a bearing seat 3 is fixedly installed on the inner side of the end shell 202. The bearing seat 3 is provided with a plurality of positioning bolts 301 inside, which are used to fix it to the end shell 202 as a whole. The bearing body 4 is rotatably connected inside the bearing seat 3. The bearing body 4 is sleeved on the outside of the output shaft 101 and keeps coaxial with it. An annular limiting gasket 5 is fixedly installed between the bearing seat 3 and the assembly housing 2, which is used to make the bearing seat 3 make a small radial displacement with the vibration of the motor body 1. Specifically, when the motor body 1 drives the output shaft 101 to run, as the motor body 1 drives the output shaft 101 to vibrate, it can simultaneously drive the bearing body 4 and the bearing housing 3 to vibrate slightly. By assembling the annular limiting shim 5 between the bearing housing 3 and the assembly housing 2, it can allow the bearing housing 3 to make a small radial displacement, preventing overload collision damage to the components. The annular limiting gasket 5 can be made of neoprene rubber and is sandwiched between the bearing housing 3 and the assembly housing 2. Specifically, the annular limiting shim 5 is used to fill the space between the bearing housing 3 and the end shell 202. On the one hand, it can limit the bearing housing 3 to prevent circumferential rotation and skewness. On the other hand, it can allow the bearing housing 3 to vibrate slightly inside the end shell 202. This can work with the bearing shim 102 to buffer the force on the motor body 1 and achieve basic vibration reduction. The annular limiting shim 5 is made of elastic material, which will not be described in detail here. In this embodiment of the invention, an annular positioning frame 6 is fixedly installed on the inner side of the end shell 202. Multiple voice coil motors 7 are symmetrically installed on the inner side of the annular positioning frame 6. The ends of the voice coil motors 7 are fixedly connected to the annular positioning frame 6. A protective gasket 701 is fixedly installed on the output end of the voice coil motor 7 and is fixedly connected to the outer side of the bearing seat 3 through the protective gasket 701. This is used to output a linearly controllable radial thrust as the motor body 1 vibrates, thereby realizing active micro-displacement compensation and vibration suppression. Multiple displacement sensor modules 302 are fixedly installed on the inner side of the bearing seat 3. The multiple displacement sensor modules 302 are symmetrically distributed on the outer circumference of the output shaft 101 and are used to detect the radial eccentric displacement of the output shaft 101. In the above embodiment, four displacement sensor modules 302 are evenly distributed along the circumference of the output shaft 101 at 90°. The voice coil motor 7 is a TMEC15 model, used to achieve small radial displacement of ±3mm and light-load high-frequency correction. Specifically, as the output shaft 101 of the motor body 1 vibrates under stress, radial eccentricity will occur between the motor output shaft 101 and the reducer input shaft. At this time, the displacement sensor module 302 can detect the radial eccentricity in real time, and apply radial force to the bearing housing 3 through the operation of the corresponding voice coil motor 7, thereby realizing the active correction of the motor shaft eccentricity. This effectively reduces the vibration, noise and transmission loss caused by the eccentricity of the output shaft 101, improves the coaxiality between the output shaft 101 and the reducer input shaft, and achieves the effect of active vibration damping, which can also improve the transmission effect of the output shaft 101. Specifically, during operation, the motor body 1 can complete basic vibration isolation through the bearing pad 102 to achieve vibration reduction. At the same time, through the cooperation of the voice coil motor 7, the eccentricity of the output shaft 101 and the vibration suppression of the motor body 1 can be completed simultaneously. On the one hand, this ensures the vibration reduction effect of the motor body 1 during operation, and on the other hand, it can prevent the coaxial error from expanding due to the vibration of the motor body 1. While ensuring the active vibration isolation effect, it reduces the transmission loss caused by the eccentricity of the output shaft 101 and ensures the transmission effect. Specifically, the displacement sensor module 302 is an existing eddy current displacement sensor used to monitor the eccentric displacement of the output shaft 101; multiple acceleration sensors are fixedly installed on the outside of the motor body 1 to detect the motor vibration acceleration signal. In specific implementation, the displacement sensor module 302 collects the magnitude and direction of the offset of the bearing housing 3 during the operation of the motor body 1, calculates the compensation force required for static eccentric return, that is, the force in the direction of the static offset vector, and obtains the vibration acceleration by the acceleration sensor to calculate the dynamic impact load of the bearing housing 3 during the operation of the motor body 1, that is, the force in the direction of the dynamic vibration vector. The two force values ​​are superimposed to obtain the total compensation force of the voice coil motor. The direction of the compensation force is opposite to the offset direction of the bearing housing. After obtaining the magnitude and direction of the compensation force, the voice coil motor 7 is controlled by the PLC control module to complete the compensation operation.

[0021] The aforementioned accelerometer and PLC control module are existing devices and will not be described in detail here. The voice coil motor 7 is driven independently by the four voice coil motors around it according to the vector allocation rule; when the radial force of vibration acts on the angle between two adjacent voice coil motors 7, the corresponding two adjacent voice coil motors output driving force synchronously and proportionally, and rely on the superposition of force vectors to synthesize the radial correction resultant force pointing in the opposite direction of vibration, and the other opposing voice coil motors 7 do not work. This solution uses a high-speed response cylindrical voice coil motor 7, paired with a high sampling frequency control chip, and combines an acceleration feedforward fast pre-compensation algorithm to simplify the calculation process and reduce signal processing latency. It relies on vector cooperative output to achieve vibration compensation at any angle, while meeting all-round active correction and improving the overall real-time control speed of the system. It is suitable for high-frequency vibration conditions of the motor body 1 and effectively solves the vibration suppression failure problem caused by control lag.

[0022] Example 2: Based on Example 1, multiple wedge-shaped slots 10 are symmetrically opened on the outer side of the bearing housing 3, and a sliding block 1001 is slidably connected inside the wedge-shaped slot 10. Multiple positioning end rods 8 are fixedly installed on the inner side of the annular positioning frame 6. The installation position of the positioning end rods 8 is adapted to the opening position of the wedge-shaped slots 10. A disc spring 9 is fixedly installed at the end of the positioning end rod 8. One end of the disc spring 9 is in contact with the sliding block 1001. The end of the wedge-shaped slot 10 with a deeper opening depth is located on the side close to the annular limiting pad 5, and the end of the wedge-shaped slot 10 with a shallower opening depth is located on the side close to the motor body 1.

[0023] Specifically, by setting the wedge-shaped groove 10, the bearing seat 3 can be pre-tightened through the cooperation of the disc spring 9 and the sliding block 1001. An axial thrust is applied to the inner wall of the wedge-shaped groove 10 of the bearing seat 3, and the bearing seat 3 is stably supported in the center position to achieve initial pre-tightening. The initial position of the sliding block 1001 is located in the middle of the corresponding wedge-shaped groove 10, which allows the slider 1001 to have sufficient sliding margin in both inward and outward, and to achieve bidirectional movement when the bearing seat 3 is subjected to inward force and wear gap compensation. When the bearing seat 3 is pressed inward, the sliding block 1001 can slide along the deeper end of the wedge-shaped groove 10. When the wear gap of the bearing seat 3 increases, the sliding block 1001 can slide and compensate inside the wedge-shaped groove 10, always maintaining the support effect on the bearing seat 3. Compared to traditional springs, the disc spring 9 has a gentler stiffness and a smaller force variation. The more the bearing seat 3 shifts inward, the greater the required support force. The slider 1001 slides to the deeper end, reducing the compression and thrust of the disc spring 9 to match the load requirements. At the same time, the wedge-shaped slot 10 weakens the force reduction. Combined with the gentle force characteristics of the disc spring 9, it will not hinder the active driving of the voice coil motor 7, and can also provide support. In specific implementation, the sliding stroke of the sliding block 1001 along the wedge-shaped groove 10 and the compression stroke of the disc spring 9 satisfy the geometric relationship δ=Ssinα. Due to the influence of the wedge angle, the axial deformation of the disc spring 9 is less than the sliding stroke of the sliding block 1001. The effective sliding stroke of the sliding block 1001 in both directions is 1mm, corresponding to a total compression change of the disc spring 9 ≤0.15mm. A high-stiffness disc spring structure is selected, and the thrust is basically constant within the range of small compression changes. Specifically, the pressure on the bearing housing 3 mentioned above refers to the torque fluctuations caused by road bumps that cause pressure on the bearing housing 3 and the output shaft 101, as well as the radial force on the output shaft 101 and the bearing housing 3 during vehicle operation. Specifically, the wedge-shaped groove 10, in conjunction with the sliding block 1001 and the disc spring 9, can compensate for the wear gap of the bearing housing 3 contact surface, ensuring that the bearing housing 3 always maintains uniform force and preventing phenomena such as swaying caused by increased gap due to wear of the bearing housing 3. At the same time, when used with the voice coil motor 7, the voice coil motor 7 can focus only on eccentric correction and high-frequency vibration suppression without bearing static support load, reducing the workload of the voice coil motor 7 and extending its service life. It can also ensure that the radial correction force applied by the voice coil motor 7 can be accurately applied in the eccentric direction, reducing the wear rate of the bearing housing 3.

[0024] In this embodiment of the invention, a limiting hole is provided on the side of the sliding block 1001 near the disc spring 9. The end of the disc spring 9 is located inside the limiting hole to limit the disc spring 9. One end of the disc spring 9 is in contact with the inner wall of the limiting hole to ensure that the disc spring 9 only applies axial pressure to the sliding block 1001. At the same time, when the sliding block 1001 slides along the wedge groove 10 for compensation, the disc spring 9 can achieve a small angular displacement inside the limiting hole to avoid motion interference and jamming.

[0025] In this embodiment of the invention, a plurality of sealing brackets 11 are fixedly installed on the outer side of the bearing housing 3. The installation positions of the plurality of sealing brackets 11 are respectively located on the outer side of the corresponding wedge-shaped groove 10. An elastic sealing membrane 1101 is fixedly installed on the outer side of the sealing bracket 11. The disc spring 9 passes through the corresponding elastic sealing membrane 1101. Lubricating oil is stored inside the wedge-shaped groove 10. Specifically, the sealing baffle 11 and the elastic sealing membrane 1101 cooperate with each other to seal the corresponding wedge-shaped groove 10. The wedge-shaped groove 10 is filled with lubricating oil to ensure the sliding effect of the sliding block 1001 inside. The sealing of the wedge-shaped groove 10 is completed by the sealing baffle 11 and the elastic sealing membrane 1101. On the one hand, it can prevent lubricating oil leakage, and on the other hand, it can prevent external debris from entering the wedge-shaped groove 10. Specifically, the elastic sealing membrane 1101 is an existing composite membrane that can block lubricating oil while allowing air to pass through. The elastic sealing membrane 1101 can be made of ePTFE material. The elastic sealing membrane 1101 is covered with nanoscale interconnected micropores, which allow air molecules to pass through smoothly while blocking liquid lubricating oil.

[0026] In this embodiment of the invention, an annular liquid guide frame 13 is fixedly installed inside the end shell 202, and liquid guide ends 1301 that communicate with each other are fixedly installed on the outside of the annular liquid guide frame 13. The end of the liquid guide ends 1301 protrudes out of the end shell 202. A connecting pipe 12 is connected between the annular liquid guide frame 13 and a plurality of sealing baffles 11 for conveying lubricating oil to the corresponding wedge-shaped groove 10 through the connecting pipe 12. Specifically, by setting up the annular liquid guide frame 13, lubricating oil can be introduced into the annular liquid guide frame 13 through the liquid guide end 1301, and then introduced into the corresponding wedge-shaped groove 10 through multiple connecting pipes 12, so as to facilitate the replenishment of lubricating oil into the wedge-shaped groove 10.

[0027] Specifically, a concave liquid guiding pipe 1201 is fixedly installed on the outer side of the sealing baffle 11, and the connecting pipe 12 is fixedly connected to the middle position of the corresponding concave liquid guiding pipe 1201. The two ends of the concave liquid guiding pipe 1201 are respectively connected to the two ends of the side of the sealing baffle 11 and are connected to the wedge-shaped groove 10, so that the lubricant can enter the two ends of the wedge-shaped groove 10 during the injection of lubricant.

[0028] Specifically, multiple mounting brackets 201 are fixedly installed on the outer side of the mounting shell 2 for fixing the mounting shell 2 to the vehicle frame. The voice coil motor 7 and disc spring 9 are arranged radially and outwards, not axially stacked. This will not occupy the axial length space of the motor body 1, nor will it increase the overall axial size of the machine. It is compatible with the original layout of the motor body 1, and will not affect the axial limit and circumferential constraint of the bearing housing 3 at all.

[0029] Furthermore, any content not described in detail in this specification is existing technology known to those skilled in the art.

[0030] The foregoing has provided a detailed description of one embodiment of the present invention, but this description is merely a preferred embodiment and should not be construed as limiting the scope of the invention. All equivalent variations and modifications made within the scope of the present invention should still fall within the scope of the present invention.

Claims

1. A new energy vehicle drive motor with an active shock absorption structure, comprising a motor body (1), wherein an output shaft (101) is connected to the end of the motor body (1), characterized in that: An assembly housing (2) is fixedly installed on the outside of the motor body (1), and a bearing pad (102) is fixedly installed between the assembly housing (2) and the motor body (1). An end shell (202) is fixedly installed at the end of the assembly housing (2). A bearing seat (3) is fixedly installed on the inner side of the end shell (202). A bearing body (4) is rotatably connected inside the bearing seat (3). The bearing body (4) is sleeved on the outside of the output shaft (101) and keeps coaxial with it. An annular limiting shim (5) is fixedly installed between the bearing seat (3) and the assembly housing (2) to make the bearing seat (3) make a small radial displacement with the vibration of the motor body (1). An annular positioning frame (6) is fixedly installed on the inner side of the end shell (202). Multiple voice coil motors (7) are symmetrically installed on the inner side of the annular positioning frame (6). The ends of the voice coil motors (7) are fixedly connected to the annular positioning frame (6). A protective gasket (701) is fixedly installed on the output end of the voice coil motor (7) and is fixedly connected to the outer side of the bearing seat (3) through the protective gasket (701). It is used to output linearly controllable radial thrust as the motor body (1) vibrates, so as to realize active micro-displacement compensation and vibration suppression.

2. A new energy vehicle drive motor with an active shock absorption structure according to claim 1, characterized in that: The bearing seat (3) has multiple wedge-shaped slots (10) symmetrically opened on the outer side, and a sliding block (1001) is slidably connected inside the wedge-shaped slot (10). Multiple positioning end rods (8) are fixedly installed on the inner side of the annular positioning frame (6). The installation position of the positioning end rod (8) is adapted to the opening position of the wedge-shaped slot (10). A disc spring (9) is fixedly installed at the end of the positioning end rod (8). One end of the disc spring (9) is in contact with the sliding block (1001).

3. A new energy vehicle drive motor with an active shock absorption structure according to claim 2, characterized in that: The sliding block (1001) has a limiting hole on the side near the disc spring (9), and the end of the disc spring (9) is located inside the limiting hole to limit the disc spring (9).

4. A new energy vehicle drive motor with an active shock absorption structure according to claim 2, characterized in that: The deeper end of the wedge-shaped groove (10) is located near the annular limiting pad (5), and the shallower end of the wedge-shaped groove (10) is located near the motor body (1).

5. A new energy vehicle drive motor with an active shock absorption structure according to claim 2, characterized in that: Multiple sealing brackets (11) are fixedly installed on the outside of the bearing housing (3). The installation positions of the multiple sealing brackets (11) are respectively located on the outside of the corresponding wedge-shaped groove (10). An elastic sealing membrane (1101) is fixedly installed on the outside of the sealing bracket (11). The disc spring (9) passes through the corresponding elastic sealing membrane (1101). The inside of the wedge-shaped groove (10) stores lubricating oil.

6. A new energy vehicle drive motor with an active shock absorption structure according to claim 5, characterized in that: An annular liquid guide frame (13) is fixedly installed inside the end shell (202). An interconnected liquid guide end (1301) is fixedly installed on the outside of the annular liquid guide frame (13). The end of the liquid guide end (1301) protrudes out of the end shell (202). A connecting pipe (12) is connected between the annular liquid guide frame (13) and multiple sealing baffles (11) for conveying lubricating oil to the corresponding wedge-shaped groove (10) through the connecting pipe (12).

7. A new energy vehicle drive motor with an active shock absorption structure according to claim 6, characterized in that: A concave liquid guiding pipe (1201) is fixedly installed on the outside of the sealing baffle (11), and the connecting pipe (12) is fixedly connected to the middle position of the corresponding concave liquid guiding pipe (1201).

8. A new energy vehicle drive motor with an active shock absorption structure according to claim 2, characterized in that: The initial position of the sliding block (1001) is located in the middle of the corresponding wedge groove (10).

9. A new energy vehicle drive motor with an active shock absorption structure according to claim 1, characterized in that: Multiple displacement sensor modules (302) are fixedly installed on the inner side of the bearing housing (3). The multiple displacement sensor modules (302) are symmetrically distributed on the outer circumference of the output shaft (101) to detect the radial eccentric displacement of the output shaft (101).

10. A new energy vehicle drive motor with an active shock absorption structure according to claim 1, characterized in that: Multiple mounting brackets (201) are fixedly installed on the outer side of the assembly housing (2) for fixing the assembly housing (2) to the vehicle frame.

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