Motor damping device for new energy automobile

Abstract

The invention discloses a motor damping device for a new energy automobile, belongs to the technical field of motor damping, and aims to solve the problem that a traditional rubber pad or sound insulation cotton only can achieve a passive damping effect, so that the rubber pad or sound insulation cotton cannot actively adapt to different vibration intensities. Buffer assemblies are fixedly arranged in an inner cavity of the shell, an absorption assembly is arranged in the gap between every two buffer assemblies, one of every two buffer assemblies is movably connected with the absorption assembly through a connecting assembly, and a plurality of semiconductor chilling plates are further arranged in the gap between every two buffer assemblies. According to the invention, the buffer part is controlled to be converted between an approximate rectangle and an approximate hexagon in real time, so that the framework structures in the shell and the gasket can make adaptive changes in real time according to the vibration intensity, active damping and dynamic adjustment are realized, and the damping device is used for adapting to complex terrains.

Description

Technical Field

[0001] This invention relates to the field of motor vibration reduction technology, specifically to a motor vibration reduction device for new energy vehicles. Background Technology

[0002] During operation, the motors of new energy vehicles generate electromagnetic and mechanical vibrations. These vibrations are transmitted to the passenger compartment through components such as the chassis and frame, reducing the quietness of the passenger compartment and thus reducing the driver's experience. Therefore, in the field of new energy vehicles, shock absorption devices are generally used to dampen the motors. On the one hand, this can improve the driving experience, and on the other hand, it can absorb the motor's vibrations, protect the motor, and extend the service life of related components.

[0003] Current motor vibration damping devices generally use rubber pads or sound insulation cotton in conjunction with the suspension to achieve the effect of vibration damping. When a car is driving on complex road conditions, the intensity of the vibration is inconsistent. Relying on traditional rubber pads or sound insulation cotton can only achieve a passive vibration damping effect, which means that the rubber pads or sound insulation cotton cannot actively adapt to different vibration intensities, resulting in a reduction in the vibration damping effect.

[0004] To address the above issues, a vibration damping device for motors in new energy vehicles is proposed. Summary of the Invention

[0005] The purpose of this invention is to provide a vibration damping device for motors in new energy vehicles. By using this device, the problem in the background mentioned above can be solved by relying on traditional rubber pads or sound insulation cotton, which can only achieve a passive vibration damping effect. This results in the rubber pads or sound insulation cotton being unable to actively adapt to different vibration intensities, thus reducing the vibration damping effect.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a motor vibration damping device for new energy vehicles, comprising a housing, a frame for supporting automotive components disposed below the housing, a mounting plate for mounting components disposed on the top surface of the housing, a motor for driving the vehicle fixedly disposed on the mounting plate, a vibration sensor for monitoring the intensity of motor vibration disposed on the motor, a plurality of damping components for buffering vibration being fixedly disposed in the inner cavity of the housing, an absorbing component for absorbing vibration being disposed at the gap between every two damping components, one of the damping components and the absorbing component being movably connected by a connecting component, and a plurality of semiconductor cooling chips for cooling the damping components being disposed at the gap between every two damping components.

[0007] Furthermore, the outer casing includes a housing, a gasket is installed on the top surface of the housing, a load-bearing plate is fixedly installed on the side wall of the inner cavity of the housing, and the absorption assembly, the connecting assembly and the semiconductor cooling chip are all fixedly installed on the load-bearing plate.

[0008] Furthermore, the buffer assembly includes a buffer element fixedly installed on the side wall of the load-bearing plate, and electrode plates are fixedly installed on the buffer element.

[0009] Furthermore, the housing and gaskets possess appropriate elasticity, flexibility, and support, which can maintain the basic shape of the housing while reducing vibration transmission between components; The load-bearing plate is made of rigid material and is used to provide sufficient load-bearing capacity for the absorption components, connecting components, and semiconductor cooling chips.

[0010] Furthermore, the absorbing components and connecting components are made of materials capable of absorbing vibrations, and the absorbing components and connecting components are assembled without gaps to prevent collision vibrations.

[0011] Furthermore, the initial shape of the buffer is approximately rectangular, 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, causing it to change to an approximately hexagonal shape to buffer severe vibrations.

[0012] Furthermore, the absorption component includes a connecting column fixedly installed on the side wall of the load-bearing plate, a limit rod fixedly installed at the upper end of the connecting column, a sliding column slidably installed on the limit rod, and the sliding column and the limit rod are elastically connected by a number of evenly distributed elastic pieces.

[0013] Furthermore, the sliding column includes a column body, the top of which is provided with a clearance groove, and locking pins are fixedly installed on the inner walls of both sides of the clearance groove.

[0014] Furthermore, the connecting assembly includes a mounting ear fixedly mounted on the side wall of the buffer, a compression plate slidably mounted inside the clearance groove, and the mounting ear and the compression plate are movably connected by a connecting rod.

[0015] Furthermore, the extrusion plate includes a plate body that is slidably installed in the cavity of the relief groove, and sliding grooves are respectively provided on the outer walls of both sides of the plate body, and the locking post is slidably disposed inside the sliding groove.

[0016] Compared with the prior art, the beneficial effects of the present invention are as follows: 1. This invention controls the buffer component to switch between an approximate rectangle and an approximate hexagon in real time, thereby enabling the skeleton structure inside the shell and gasket to adapt to the intensity of vibration in real time. Compared with traditional passive damping, the buffer component in this invention can achieve active damping according to road conditions and achieve dynamic adjustment, thus adapting to complex terrain.

[0017] 2. The shock absorption method in this invention is more flexible than traditional rubber pads and sound insulation cotton. It can not only prevent severe vibrations from entering the cab, but also protect the motor.

[0018] 3. When the buffer component in this invention deforms according to road conditions, it can drive the spring sheet on the absorption component to change shape through the connecting component, so as to adapt to the vibration filtering under different vibration conditions.

[0019] 4. In this invention, the shock-absorbing component and the shock-absorbing component work together to achieve a good shock absorption effect for both mild and severe vibrations. Furthermore, the shock absorption effect can be dynamically adjusted according to the degree of vibration, thus maintaining a good shock absorption effect while also having strong flexibility.

[0020] 5. This invention enables the absorption component to break through the traditional passive vibration filtering and transform into active vibration filtering through the linkage between the buffer component and the absorption component, thus achieving a better vibration reduction effect. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram showing the disassembled outer casing and mounting plate of the present invention; Figure 3 The shape of the internal skeleton structure of the outer shell under severe vibration conditions according to the present invention; Figure 4 for Figure 3 Enlarged view of point A; Figure 5 for Figure 4 Enlarged view of point B; Figure 6 The shape of the internal skeleton structure of the outer shell under mild vibration conditions according to the present invention; Figure 7 for Figure 6 Enlarged view of point C; Figure 8 for Figure 7 Enlarged view of point D; Figure 9 This is a schematic diagram showing the disassembled absorption component and connecting component of the present invention.

[0022] 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

[0023] 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.

[0024] 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: 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.

[0025] Specifically, since several damping components 5 for buffering vibration are fixedly installed in the inner cavity of the outer shell 1, the damping components 5 can be regarded as the internal skeleton structure of the outer shell 1. Furthermore, the damping components 5 are provided with shape memory alloy. When the new energy vehicle travels on complex road conditions, the vibration sensor 9 monitors the intensity of vibration 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 damping components 5. Because the damping components 5 are provided with shape memory alloy, after the current enters the shape memory alloy, the thermal effect of the current induces a solid-state phase transition in the shape memory alloy, thereby causing a change in the shape of the shape memory alloy. Also, because... The buffer component 5 can be regarded as the skeleton structure inside the outer shell 1. Therefore, when the shape of the shape memory alloy changes, the skeleton structure inside the outer shell 1 changes synchronously to adapt to the intensity of the vibration. By coordinating the semiconductor cooling chip 8 with the magnitude of the applied current, the temperature of the buffer component 5 can be adjusted in real time, thereby achieving the purpose of real-time control of the shape memory alloy deformation. This allows the skeleton structure inside the outer shell 1 to make adaptive changes in real time according to the intensity of the vibration. Compared with traditional passive vibration damping, the buffer component 5 in this application can achieve active vibration damping according to road conditions and achieve dynamic adjustment, thus adapting to complex terrain.

[0026] In addition, when the buffer component 5 adapts to changes in road conditions, the buffer component 5 will synchronously drive the absorption component 6 to undergo adaptive compression deformation through the connecting component 7. Since the absorption component 6 has different shock absorption performance under different degrees of compression deformation, the absorption component 6 can also exhibit different shock absorption performance according to different road conditions, thus achieving a dynamic shock absorption effect with strong adaptability.

[0027] like Figures 6-8 As shown, the outer casing 1 includes a housing 11, and a gasket 12 is installed on the top surface of the housing 11. The housing 11 and the gasket 12 have appropriate elasticity, flexibility and support, which can maintain the basic shape of the outer casing 1 while reducing the vibration transmission between components, thus achieving the same shock absorption effect. A load-bearing plate 13 is fixedly installed on the side wall of the inner cavity of the housing 11. The absorption component 6, the connecting component 7 and the semiconductor cooling chip 8 are all fixedly installed on the load-bearing plate 13. The load-bearing plate 13 is made of rigid material such as hard plastic, which is used to provide sufficient load-bearing capacity for the absorption component 6, the connecting component 7 and the semiconductor cooling chip 8.

[0028] like Figure 7As shown, the buffer assembly 5 includes a buffer member 51 fixedly installed on the side wall of the load-bearing plate 13. The buffer member 51 is made of shape memory alloy, and a shape memory alloy with two-way shape memory effect is selected, such as a nickel-titanium alloy with a specific composition, to realize the deformation and recovery of the shape memory alloy. An electrode plate 52 is fixedly installed on the buffer member 51. The electrode plate 52 is electrically connected to the battery pack (not shown in the figure) through a wire to realize the function of transmitting electrical energy.

[0029] 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.

[0030] The buffer 51 initially has 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 energize the buffer 51, causing it to change into an approximately hexagonal shape to buffer severe vibrations. Because a shape memory alloy with a two-way shape memory effect is selected, the shape memory alloy is first shaped into an approximately rectangular shape at high temperature, and then shaped into an approximately hexagonal shape at room temperature. Therefore, when current is applied to the buffer 51 and the phase transition temperature is reached, the buffer 51 can switch its shape to buffer different levels of vibration.

[0031] Specifically, since several buffer elements 51 are fixedly installed on the gasket 12 inside the housing 11, and since the buffer elements 51 are in contact with the side walls of the housing 11 and the gasket 12, the several buffer elements 51 can be regarded as the skeleton structure of the housing 11 and the gasket 12. The buffer elements 51 are made of shape memory alloy with two-way shape memory effect. When the new energy vehicle travels on complex road conditions, the vibration sensor 9 monitors the intensity of vibration 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 elements 51. When the phase change temperature is reached, the buffer elements 51 change from the approximately rectangular shape in the initial state to an approximately hexagonal shape. Since the buffer elements 51 are regarded as the skeleton structure of the housing 11 and the gasket 12, therefore... When the shape of the buffer 51 changes, the internal skeleton structure of the housing 11 and the gasket 12 changes synchronously, forming a "honeycomb-like" structure, which has a stronger shock absorption effect to adapt to the current intensity of vibration. When the road surface is restored to a flat surface, the vibration will decrease. By coordinating the semiconductor cooling chip 8 with the magnitude of the current, the temperature of the buffer 51 can be adjusted in real time, thereby achieving real-time control of the buffer 51 between an approximately rectangular and an approximately hexagonal shape. This allows the skeleton structure inside the housing 11 and the gasket 12 to make adaptive changes in real time according to the intensity of vibration. Compared with traditional passive shock absorption, the buffer assembly 5 in this application can achieve active shock absorption according to road conditions and achieve dynamic adjustment, which can adapt to complex terrain.

[0032] Through the above settings, the traditional passive damping can be transformed into active damping, which has a better damping effect. Moreover, during the damping process, the shape of the skeleton structure inside the housing 11 and the pad 12 can be dynamically adjusted according to the real-time road conditions to adapt to different degrees of vibration. Compared with traditional rubber pads and sound insulation cotton, it has a more flexible damping method. It can not only prevent severe vibration from entering the cab, but also protect the motor 4.

[0033] To address the technical issue of incomplete shock absorption by the buffer component 5, such as... Figures 3-5 and Figures 7-9 As shown, the following preferred technical solutions are provided: like Figures 3-5 As shown, 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. The sliding column 63 and the limiting rod 64 are elastically connected by several evenly distributed elastic pieces 62. By pressing down the sliding column 63, the bending arc of the elastic pieces 62 changes, which is used to adapt to different vibration intensities.

[0034] like Figure 9 As shown, the sliding column 63 includes a column body 631, and a clearance groove 632 is provided at the top of the column body 631. A locking column 633 is fixedly installed on the inner walls of both sides of the inner cavity of the clearance groove 632.

[0035] like Figure 5 As shown, the connecting assembly 7 includes a mounting ear 71 fixedly mounted on the side wall of the buffer 51, a compression plate 72 slidably mounted inside the clearance groove 632, and the mounting ear 71 and the compression plate 72 are movably connected by a connecting rod 73.

[0036] The extrusion plate 72 includes a plate body 721 that is slidably installed in the inner cavity of the relief groove 632. Sliding grooves 722 are respectively provided on the outer walls of both sides of the plate body 721, and the locking post 633 is slidably disposed inside the sliding groove 722.

[0037] Specifically, such as Figure 9 As shown, when a new energy vehicle experiences slight vibrations while driving on a flat road, the spring 62 is in its initial state, approximately spherical in shape. This minimizes the overall deformation space of the spring 62, allowing it to more effectively absorb and dissipate vibration energy, attenuate vibration transmission, and achieve a better vibration filtering effect. Figure 5As shown, when a new energy vehicle travels on a complex road surface and experiences severe vibration, the buffer 51 changes from its initial approximately rectangular shape to an approximately hexagonal shape. The buffer 51 then pushes the compression plate 72 to move in the clearance groove 632 simultaneously through the mounting ear 71 and the connecting rod 73. During the movement of the compression plate 72, the cooperation of the locking post 633 and the sliding groove 722 ensures that the compression plate 72 can move smoothly without deviating from its trajectory. When the protruding part of the compression plate 72 disengages from the clearance groove 632, the spring 62 can bounce upward under its own elastic force, eventually forming an olive shape. The curvature of the spring 62 provides a larger deformation buffer space when the frame 2 vibrates, thus enabling it to cope with severe vibration. Since the spring 62 has different shock absorption performance under different degrees of compression deformation, it can also exhibit different shock absorption performance according to different road conditions, achieving a dynamic shock absorption effect with strong adaptability.

[0038] With the above settings, when a new energy vehicle travels on a flat road and experiences slight vibrations, the buffer 51 is approximately rectangular and the spring 62 is approximately spherical. Through their cooperation, they can effectively filter out slight vibrations. When the new energy vehicle travels on a complex road and experiences severe vibrations, the buffer 51 takes on an approximately hexagonal shape and the spring 62 takes an olive shape. Through their cooperation, they can effectively cope with severe vibrations. As can be seen from the above description, the buffer component 5 and the absorption component 6 work together to achieve good shock absorption for both slight and severe vibrations. Furthermore, they can dynamically adjust according to the degree of vibration, maintaining good shock absorption while also exhibiting strong flexibility. In addition, through the coordinated action between the buffer component 5 and the absorption component 6, the absorption component 6 breaks through the traditional passive vibration filtering and transforms into active vibration filtering, resulting in even better shock absorption.

[0039] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0040] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which 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).

2. The vibration damping device for a motor in a new energy vehicle according to claim 1, characterized in that: The outer shell (1) includes a housing (11), a gasket (12) is installed on the top surface of the housing (11), a load-bearing plate (13) is fixedly installed on the side wall of the inner cavity of the housing (11), and 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 2, characterized in that: The buffer assembly (5) includes a buffer piece (51) fixedly installed on the side wall of the load-bearing plate (13), and an electrode piece (52) is fixedly installed on the buffer piece (51).

4. A vibration damping device for a motor in a new energy vehicle according to claim 2, 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).

5. A 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.

6. A vibration damping device for a motor in a new energy vehicle according to claim 3, characterized in that: 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), causing the buffer (51) to change to an approximately hexagonal state to buffer severe vibrations.

7. A vibration damping device for a motor in a new energy vehicle according to claim 3, characterized in that: 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).

8. A vibration damping device for a motor in a new energy vehicle according to claim 7, 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).

9. A vibration damping device for a motor in a new energy vehicle according to claim 8, 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).

10. A vibration damping device for a motor in a new energy vehicle according to claim 9, 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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