A motor damping device for new energy vehicles

Abstract

The application discloses a motor damping device for a new energy vehicle, and belongs to the technical field of motor damping. In order to solve the problem that traditional rubber pads or sound insulation cotton can only play a passive damping effect and cannot actively adapt to different vibration intensities, the motor damping device comprises a shell, buffer assemblies are fixedly arranged in the inner cavity of the shell, absorbing assemblies are arranged at the gaps between every two buffer assemblies, one of the buffer assemblies and the absorbing assembly are movably connected through a connecting assembly, and a plurality of semiconductor refrigerating fins are further arranged at the gaps between every two buffer assemblies. The buffer assemblies are converted between an approximate rectangle and an approximate hexagon in real time, so that the skeleton structure inside the shell and the gasket can be adaptively changed according to the vibration intensity in real time, active damping and dynamic adjustment are realized, and the motor damping device is used for adapting to complex terrains.

Description

TECHNICAL FIELD

[0001] The application relates to a motor damping device for a new energy vehicle. BACKGROUND

[0002] During use, a new energy vehicle motor generates electromagnetic vibration and mechanical vibration, the vibration is conducted to a cab through a chassis, a vehicle frame and the like, the quietness in the cab is reduced, and the use experience of a driver is reduced, therefore, in the field of new energy vehicles, a damping device is generally used for damping treatment of the motor, which can improve the driving experience and absorb the vibration of the motor, thereby protecting the motor and prolonging the service life of related components.

[0003] At present, the motor damping device is generally used in cooperation with a rubber pad or sound-absorbing cotton and a suspension, thereby achieving the damping effect, when the vehicle runs on complex road conditions, the vibration generated is inconsistent in intensity, and the traditional rubber pad or sound-absorbing cotton can only play a passive damping effect, so that the rubber pad or sound-absorbing cotton cannot actively adapt to different vibration intensities, and the damping effect is discounted.

[0004] In view of the above problems, the application provides a motor damping device for a new energy vehicle. SUMMARY

[0005] The application aims to provide a motor damping device for a new energy vehicle, which is used to solve the problem that the traditional rubber pad or sound-absorbing cotton can only play a passive damping effect, so that the rubber pad or sound-absorbing cotton cannot actively adapt to different vibration intensities, and the damping effect is discounted.

[0006] To achieve the above purpose, the application provides the following technical scheme: a motor damping device for a new energy vehicle, comprising a shell, a vehicle frame for supporting automobile parts is arranged below the shell, an installation plate for installing parts is arranged on the top surface of the shell, a motor for driving the vehicle is fixedly arranged on the installation plate, a vibration sensor for monitoring the vibration intensity of the motor is arranged on the motor, a plurality of buffer assemblies for buffering vibration are fixedly arranged in the inner cavity of the shell, an absorption assembly for absorbing vibration is arranged at the gap between every two buffer assemblies, one of the buffer assemblies and the absorption assembly are movably connected through a connecting assembly, and a plurality of semiconductor refrigerating sheets for cooling the buffer assemblies are arranged at the gap between every two buffer assemblies.

[0007] Further, the shell comprises a shell body, a gasket is mounted on the top surface of the shell body, a bearing plate is fixedly mounted on the side wall of the inner cavity of the shell body, the absorption assembly, the connecting assembly and the semiconductor refrigerating sheets are fixedly mounted on the bearing plate.

[0008] Further, the buffer assembly comprises a buffer fixedly installed on the side wall of the load-bearing plate, and an electrode sheet is fixedly installed on the buffer.

[0009] Further, the shell and the gasket have proper elasticity, flexibility and supportability, so that the shell can maintain the basic shape and the vibration transmission between the components can be reduced;

[0010] The load-bearing plate is made of rigid material and is used to provide sufficient load bearing capacity for the absorbing assembly, the connecting assembly and the semiconductor refrigeration sheet.

[0011] Further, the absorbing assembly and the connecting assembly are made of materials capable of absorbing vibration, and the absorbing assembly and the connecting assembly are assembled without gaps to prevent collision and vibration.

[0012] Further, the buffer has an initial shape of an approximate rectangle, which can adapt to slight vibration on a flat road, and when severe vibration occurs, the controller controls the battery pack to energize the buffer, so that the buffer changes to an approximate hexagonal state to buffer the severe vibration.

[0013] Further, the absorbing assembly comprises a connecting column fixedly installed on the side wall of the load-bearing plate, a limiting rod is fixedly installed at the upper end of the connecting column, a sliding column is slidingly installed on the limiting rod, and the sliding column and the limiting rod are elastically connected through a plurality of uniformly distributed elastic sheets.

[0014] Further, the sliding column comprises a column body, and a clearance slot is formed at the top of the column body, and clamping columns are fixedly installed on the inner walls of the inner cavity of the clearance slot.

[0015] Further, the connecting assembly comprises a mounting ear fixedly installed on the side wall of the buffer, and an extrusion plate is slidingly installed in the interior of the clearance slot, and the mounting ear and the extrusion plate are movably connected through a connecting rod.

[0016] Further, the extrusion plate comprises a plate body slidingly installed in the inner cavity of the clearance slot, sliding grooves are formed in the outer walls of the plate body, and the clamping columns are slidingly arranged in the interiors of the sliding grooves.

[0017] Compared with the prior art, the beneficial effects of the present application are as follows:

[0018] 1、The present application can control the mutual conversion of the buffer between the approximate rectangle and the approximate hexagon in real time, so that the skeleton structure in the shell and the gasket can adaptively change according to the severity of the vibration, and the buffer assembly in the present application can realize active vibration damping according to the road conditions, and realize dynamic adjustment, which can adapt to complex terrain.

[0019] 2、The shock absorption mode in the application is more flexible compared with traditional rubber pad and sound insulation cotton, which can not only prevent the transmission of severe vibration into the cab, but also protect the motor.

[0020] 3、The buffering piece in the application can drive the elastic sheet on the absorbing assembly to change shape through the connecting assembly when it deforms according to road conditions, which is used for filtering shock under different vibration conditions.

[0021] 4、The buffering piece in the application can realize good shock absorption effect through the synergistic effect between the buffering assembly and the absorbing assembly, whether for slight vibration or severe vibration, and can be dynamically adjusted according to different vibration degrees, while maintaining good shock absorption effect, and has strong flexibility.

[0022] 5、The buffering piece in the application makes the absorbing assembly break through the traditional passive shock filtering and change into active shock filtering through the linkage between the buffering assembly and the absorbing assembly, which has better shock absorption effect. BRIEF DESCRIPTION OF DRAWINGS

[0023] Figure 1 It is a schematic diagram of the overall structure of the application;

[0024] Figure 2 It is a split schematic diagram of the shell and the mounting plate of the application;

[0025] Figure 3 It is the skeleton structure shape of the shell inside under severe vibration conditions of the application;

[0026] Figure 4 It is the A enlarged view of Figure 3 ;

[0027] Figure 5 It is the B enlarged view of Figure 4 ;

[0028] Figure 6 It is the skeleton structure shape of the shell inside under slight vibration conditions of the application;

[0029] Figure 7 It is the C enlarged view of Figure 6 ;

[0030] Figure 8 It is the D enlarged view of Figure 7 ;

[0031] Figure 9 It is a split schematic diagram of the absorbing assembly and the connecting assembly of the application.

[0032] In the diagram: 1. Outer shell; 11. Housing; 12. Gasket; 13. Load-bearing plate; 2. Frame; 3. Mounting plate; 4. Motor; 5. Buffer assembly; 51. Buffer component; 52. Electrode plate; 6. Absorption assembly; 61. Connecting column; 62. Spring; 63. Sliding column; 631. Column; 632. Relief groove; 633. Locking column; 64. Limiting rod; 7. Connecting assembly; 71. Mounting ear; 72. Extrusion plate; 721. Plate; 722. Sliding groove; 73. Connecting rod; 8. Semiconductor cooling chip; 9. Vibration sensor. Detailed Implementation

[0033] 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.

[0034] To address the technical problem that traditional rubber pads or sound insulation cotton cannot actively adapt to different levels of vibration intensity, such as... Figures 1-9 As shown, the following preferred technical solutions are provided:

[0035] like Figure 1 As shown, a motor vibration damping device for new energy vehicles includes a housing 1, a frame 2 for supporting vehicle components is disposed below the housing 1, a mounting plate 3 for mounting components is disposed on the top surface of the housing 1, a motor 4 for driving the vehicle is fixedly disposed on the mounting plate 3, and a ground vibration sensor 9 for monitoring the intensity of vibration of the motor 4 is disposed on the motor 4. Figures 3-4 As shown, several buffer components 5 for damping vibration are fixedly installed in the inner cavity of the outer shell 1. The buffer components 5 are electrically connected to the controller (not shown in the figure) and the battery pack (not shown in the figure) through wires. An absorption component 6 for absorbing vibration is provided at the gap between every two buffer components 5. One of the buffer components 5 and the absorption component 6 are movably connected through a connecting component 7. Several semiconductor cooling chips 8 for cooling the buffer components 5 are also provided at the gap between every two buffer components 5.

[0036] Specifically, since the inner cavity of the shell 1 is fixedly provided with a plurality of buffer assemblies 5 for buffering vibration, the buffer assemblies 5 can be regarded as the framework structure inside the shell 1, and the buffer assemblies 5 are provided with memory alloy. When the new energy vehicle drives to complex road conditions, the vibration intensity of the motor 4 is monitored in real time through the vibration sensor 9. At this time, the controller (not shown in the figure) controls the battery pack (not shown in the figure) to energize the buffer assembly 5. Since the buffer assembly 5 is provided with memory alloy, after the current enters the memory alloy, the solid phase change of the memory alloy is caused by the heat effect of the current, so that the form of the memory alloy changes. Since the buffer assembly 5 can be regarded as the framework structure inside the shell 1, when the form of the memory alloy changes, the framework structure inside the shell 1 changes synchronously to adapt to the current vibration intensity. Then, through the cooperation of the semiconductor refrigerating sheet 8 and the size of the current, the temperature of the buffer assembly 5 is adjusted in real time, so as to achieve the purpose of real-time control of the deformation of the memory alloy, and then the framework structure inside the shell 1 can adaptively change according to the vibration intensity. Compared with the traditional passive damping, the buffer assembly 5 in the application can realize active damping according to the road conditions, and realize dynamic adjustment, which can adapt to complex terrain.

[0037] In addition, when the buffer assembly 5 adaptively changes according to the road conditions, the buffer assembly 5 will synchronously drive the absorption assembly 6 to adaptively compress and deform through the connecting assembly 7. Since the absorption assembly 6 has different shock absorption performance under different compression deformation degrees, the absorption assembly 6 can also exhibit different shock absorption performance according to different road conditions, realizing the effect of dynamic shock absorption, which is more adaptive.

[0038] As shown in Figures 6-8 The shell 1 includes a shell body 11, and the top surface of the shell body 11 is provided with a gasket 12. The shell body 11 and the gasket 12 have appropriate elasticity, flexibility and supportability, which can not only maintain the basic shape of the shell 1, but also reduce the vibration conduction between components, thereby achieving the effect of shock absorption. The sidewall of the inner cavity of the shell body 11 is fixedly provided with a bearing plate 13, and the absorption assembly 6, the connecting assembly 7 and the semiconductor refrigerating sheet 8 are all fixedly installed on the bearing plate 13. The bearing plate 13 is made of rigid material such as hard plastic, which is used to provide sufficient bearing capacity for the absorption assembly 6, the connecting assembly 7 and the semiconductor refrigerating sheet 8.

[0039] As shown in Figure 7As shown, the buffer assembly 5 includes a buffer 51 fixedly installed on the side wall of the load-bearing plate 13, the buffer 51 is made of a memory alloy, and a memory alloy with a double-way shape memory effect, such as a specific composition of nickel-titanium alloy, is selected to realize the deformation and recovery of the memory alloy. The buffer 51 is fixedly installed with an electrode sheet 52, and the electrode sheet 52 is electrically connected with the battery pack (not shown in the figure) through a wire for realizing the transmission of electric energy.

[0040] The absorbing assembly 6 and the connecting assembly 7 are made of a material capable of absorbing vibration, and the absorbing assembly 6 and the connecting assembly 7 are gaplessly assembled to prevent collision vibration.

[0041] The initial shape of the buffer 51 is approximately rectangular, which can adapt to slight vibration on flat road surface. When severe vibration occurs, the controller controls the battery pack to energize the buffer 51, so that the buffer 51 changes to an approximately hexagonal state for buffering severe vibration. Since the memory alloy with a double-way shape memory effect is selected, the memory alloy is first shaped at high temperature to be approximately rectangular, and then shaped at room temperature to be approximately hexagonal. Therefore, when the current is passed into the buffer 51 and reaches the phase transition temperature, the buffer 51 can change its shape for buffering different vibration degrees.

[0042] Specifically, since the gasket 12 inside the shell 11 is fixedly installed with a plurality of buffers 51, and the buffers 51 are in contact with the side walls of the shell 11 and the gasket 12, the plurality of buffers 51 can be regarded as the framework structure of the shell 11 and the gasket 12. When the new energy vehicle drives to complex road conditions, the vibration sensor 9 monitors the vibration intensity of the motor 4 in real time. At this time, the controller (not shown in the figure) controls the battery pack (not shown in the figure) to energize the buffer 51. When the phase transition temperature is reached, the buffer 51 changes from the initial approximately rectangular shape to an approximately hexagonal shape. Since the buffer 51 is regarded as the framework structure of the shell 11 and the gasket 12, when the shape of the buffer 51 changes, the internal framework structure of the shell 11 and the gasket 12 changes synchronously to form a "honeycomb-like" structure, which has a stronger damping effect to adapt to the current vibration intensity. When it returns to flat road surface again, the vibration will decrease, and the temperature of the buffer 51 is adjusted in real time by the cooperation of the semiconductor refrigerating sheet 8 and the size of the current, so as to realize the real-time control of the mutual conversion of the buffer 51 between the approximately rectangular and the approximately hexagonal shapes. Thus, the internal framework structure of the shell 11 and the gasket 12 can adaptively change according to the vibration intensity. Compared with the traditional passive damping, the buffer assembly 5 in the application can realize active damping according to the road conditions, and realize dynamic adjustment, which can adapt to complex terrain.

[0043] Through the above setting, the traditional passive damping can be converted into active damping, which has better damping effect; and in the damping process, the shape of the skeleton structure inside the shell 11 and the gasket 12 can be dynamically adjusted according to the real-time road conditions to adapt to different degrees of vibration, and compared with the traditional rubber pad and sound insulation cotton, it also has a more flexible damping mode; not only can prevent the transmission of severe vibration into the cab, but also can protect the motor 4.

[0044] In order to solve the technical problem that the damping of the buffer assembly 5 is not complete, as shown in Figures 3-5 and Figures 7-9 , the following preferred technical solutions are provided:

[0045] As shown in Figures 3-5 , the absorbing assembly 6 includes a connecting column 61 fixedly installed on the side wall of the load-bearing plate 13, the upper end of the connecting column 61 is fixedly installed with a limiting rod 64, a sliding column 63 is slidingly installed on the limiting rod 64, and the sliding column 63 and the limiting rod 64 are elastically connected through a plurality of uniformly dispersed elastic sheets 62. By pressing the sliding column 63, the bending curvature of the elastic sheet 62 changes to adapt to different vibration intensities.

[0046] As shown in Figure 9 , the sliding column 63 includes a column body 631, and a clearance groove 632 is formed in the top of the column body 631. The clearance groove 632 is slidingly installed on the two side walls of the limiting rod 64.

[0047] As shown in Figure 5 , the connecting assembly 7 includes a mounting ear 71 fixedly installed on the side wall of the buffer 51, and an extrusion plate 72 is slidingly installed in the inside of the clearance groove 632. The mounting ear 71 and the extrusion plate 72 are movably connected through a connecting rod 73.

[0048] The extrusion plate 72 includes a plate body 721 slidingly installed in the inside of the clearance groove 632, and a sliding groove 722 is formed in the two side walls of the plate body 721. The clamping column 633 is slidingly arranged in the inside of the sliding groove 722.

[0049] Specifically, as shown in Figure 9 , when the new energy vehicle drives to the flat road to produce slight vibration, the elastic sheet 62 is in the initial state, and the overall shape is approximately spherical, so that the overall deformation space of the elastic sheet 62 is small, which can more effectively absorb and dissipate vibration energy, attenuate vibration transmission, and have better shock absorption effect; as shown in Figure 5As shown, when the new energy vehicle drives to the complex road surface and the severe vibration occurs, the buffer piece 51 changes from the initial approximate rectangular shape to the approximate hexagonal shape, the buffer piece 51 synchronously pushes the extrusion plate 72 to move in the accommodation slot 632 through the mounting lug 71 and the connecting rod 73, in the moving process of the extrusion plate 72, the extrusion plate 72 can move stably and cannot deviate from the track through the cooperation of the clamping column 633 and the sliding groove 722, when the protruding position of the extrusion plate 72 is separated from the accommodation slot 632, the elastic sheet 62 can be upwardly popped up under the action of the elastic force of the elastic sheet 62, and finally presents the olive shape, the bending radian makes the elastic sheet 62 have a larger deformation buffering space when the vehicle frame 2 vibrates, so that the severe vibration can be coped with. Since the elastic sheet 62 has different shock absorption performances under different compression deformation degrees, the elastic sheet 62 can also exhibit different shock absorption performances according to different road conditions, and the dynamic shock absorption effect is realized, and the adaptability is relatively strong.

[0050] Through the above setting, when the new energy vehicle drives to the flat road surface and the slight vibration occurs, the buffer piece 51 is in the approximate rectangular state, and the elastic sheet 62 is in the approximate spherical state, and through the cooperation of the two, the slight vibration can be fully filtered; when the new energy vehicle drives to the complex road surface and the severe vibration occurs, the buffer piece 51 is in the approximate hexagonal shape, and the elastic sheet 62 is in the olive shape, and through the cooperation of the two, the severe vibration can be fully coped with. As can be seen from the above description, the buffer assembly 5 and the absorption assembly 6 cooperate with each other, and no matter for the slight vibration or the severe vibration, a better damping effect can be realized, and the dynamic adjustment can be made according to the vibration degree, the better damping effect is maintained, and the flexibility is relatively strong. In addition, through the linkage cooperation between the buffer assembly 5 and the absorption assembly 6, the absorption assembly 6 breaks through the traditional passive shock filtering and changes into the active shock filtering, and has a better damping effect.

[0051] It should be noted that, in the present document, relational terms such as first and second and the like can be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises", "comprising", or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but can include other elements not expressly listed or inherent to such process, method, article, or apparatus.

[0052] Although embodiments of the present application have been shown and described, it would be recognized by those of ordinary skill in the art that various changes, modifications, replacements, and alterations of the embodiments could be made without departing from the principles and spirit of the application, and the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. A vibration damping device for a motor in a new energy vehicle, comprising a housing (1), a frame (2) for supporting vehicle parts is provided below the housing (1), a mounting plate (3) for mounting parts is provided on the top surface of the housing (1), a motor (4) for driving the vehicle is fixedly mounted on the mounting plate (3), and a ground vibration sensor (9) for monitoring the intensity of vibration of the motor (4) is provided on the motor (4), characterized in that: The inner cavity of the outer shell (1) is fixedly provided with a number of buffer components (5) for buffering vibration. An absorption component (6) for absorbing vibration is provided at the gap between every two buffer components (5). One of the buffer components (5) and the absorption component (6) are movably connected through a connecting component (7). A number of semiconductor cooling chips (8) for cooling the buffer components (5) are also provided at the gap between every two buffer components (5). The outer shell (1) includes a shell (11), a gasket (12) is installed on the top surface of the shell (11), and a load-bearing plate (13) is fixedly installed on the side wall of the inner cavity of the shell (11). The buffer assembly (5) includes a buffer component (51) fixedly installed on the side wall of the load-bearing plate (13), and an electrode plate (52) is fixedly installed on the buffer component (51). The buffer (51) is initially in an approximately rectangular shape, which can adapt to slight vibrations on a flat road surface. When severe vibrations occur, the controller controls the battery pack to power the buffer (51), so that the buffer (51) changes to an approximately hexagonal state to buffer severe vibrations. The absorption component (6) includes a connecting column (61) fixedly installed on the side wall of the load-bearing plate (13). A limiting rod (64) is fixedly installed at the upper end of the connecting column (61). A sliding column (63) is slidably installed on the limiting rod (64), and the sliding column (63) and the limiting rod (64) are elastically connected by a number of evenly distributed elastic pieces (62).

2. The vibration damping device for a motor in a new energy vehicle according to claim 1, characterized in that: The absorption assembly (6), the connecting assembly (7), and the semiconductor cooling chip (8) are all fixedly installed on the load-bearing plate (13).

3. The vibration damping device for a motor in a new energy vehicle according to claim 1, characterized in that: The housing (11) and the gasket (12) have appropriate elasticity, flexibility and support, which can maintain the basic shape of the housing (1) while reducing the transmission of vibration between components; The load-bearing plate (13) is made of rigid material and is used to provide sufficient load-bearing capacity for the absorption assembly (6), the connecting assembly (7) and the semiconductor cooling chip (8).

4. The vibration damping device for a motor in a new energy vehicle according to claim 1, characterized in that: The absorbing component (6) and the connecting component (7) are made of materials that can absorb vibrations, and the absorbing component (6) and the connecting component (7) are assembled without gaps to prevent collision vibrations.

5. A vibration damping device for a motor in a new energy vehicle according to claim 1, characterized in that: The sliding column (63) includes a column body (631), and a relief groove (632) is provided at the top of the column body (631). A retaining column (633) is fixedly installed on the inner walls of both sides of the relief groove (632).

6. A vibration damping device for a motor in a new energy vehicle according to claim 5, characterized in that: The connecting assembly (7) includes a mounting ear (71) fixedly mounted on the side wall of the buffer (51), a compression plate (72) is slidably mounted inside the relief groove (632), and the mounting ear (71) and the compression plate (72) are movably connected by a connecting rod (73).

7. A vibration damping device for a motor in a new energy vehicle according to claim 6, characterized in that: The extrusion plate (72) includes a plate body (721) that is slidably installed in the cavity of the relief groove (632). Slide grooves (722) are respectively provided on the outer walls of both sides of the plate body (721), and the locking post (633) is slidably arranged inside the slide groove (722).

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