Rotary giant electro-rheological fluid energy harvesting damper

Abstract

The application discloses a rotary giant electro-rheological fluid energy collection damper, which comprises a shell, an input shaft coaxially arranged on the shell, a stator coaxially fixedly connected in the shell, a plurality of iron cores uniformly arranged in the stator in a circumferential direction, and an induction coil wound on the iron cores; the input shaft is coaxially fixedly connected with a rotor, a plurality of permanent magnets are uniformly arranged in the rotor in a circumferential direction, and the polarities of the adjacent two permanent magnets are opposite; the inner side of the plurality of iron cores is fixedly connected with an outer ring polar plate, the outer side of the rotor is fixedly connected with an inner ring polar plate, the outer ring polar plate and the inner ring polar plate are electrically connected with two poles of the induction coil respectively, and a cavity for containing electro-rheological fluid is arranged between the outer ring polar plate and the inner ring polar plate. The application can collect the energy generated by vibration and apply the energy to a damping force generation process, so as to utilize the generated damping force to carry out vibration isolation; in addition, the rotary giant electro-rheological fluid energy collection damper integrates the damping and the energy collection, has high integration degree, and can significantly reduce the size.

Description

Technical Field

[0001] This invention belongs to the field of damper technology, and particularly relates to a rotary giant electrorheological fluid energy harvesting damper. Background Technology

[0002] During vehicle operation, some of the fuel energy is used to overcome road friction resistance, while most of the fuel energy is dissipated as heat during vibration. Therefore, dampers are commonly used to collect the energy generated by vibration, significantly reducing vehicle energy loss.

[0003] Dampers can be broadly classified into linear and rotary types. These two types are mostly used in automotive seat vibration damping to improve ride comfort. Traditional linear dampers are largely limited by their piston structure, resulting in a limited stroke and inability to fully utilize energy. In contrast, rotary dampers can utilize more energy by changing the gear ratio.

[0004] Magnetorheological fluid, a smart material, is often used in the interlayer of rotary dampers. The magnetorheological fluid is controlled by a magnetic field, meaning that an additional coil needs to be energized in the damper to provide the magnetic field. Therefore, in rotary dampers using magnetorheological fluid, the energy harvesting and damping parts are two separate parts, resulting in a low degree of integration.

[0005] In addition, most dampers cannot be self-powered and will stop working when power is off. Summary of the Invention

[0006] To overcome the shortcomings of existing technologies, this invention provides a rotary giant electrorheological fluid energy harvesting damper that can simultaneously isolate vibrations and harvest energy.

[0007] The objective of this invention is achieved through the following technical solution:

[0008] A rotating giant electrorheological fluid energy harvesting damper includes:

[0009] The housing has an input shaft that is coaxially rotatably mounted on it.

[0010] The stator is coaxially fixed inside the housing. Several iron cores are evenly arranged circumferentially inside the stator, and induction coils are wound on the iron cores.

[0011] The rotor is coaxially fixedly connected to the input shaft. Several permanent magnets are evenly arranged circumferentially inside the rotor, and the polarities of adjacent permanent magnets are opposite.

[0012] The outer ring electrode plate is fixedly connected to the inner side of several iron cores, and the axis of the outer ring electrode plate coincides with the axis of the input shaft.

[0013] The inner ring electrode plate is fixedly connected to the outer side of the rotor, and the axis of the inner ring electrode plate coincides with the axis of the input shaft.

[0014] The outer ring electrode plate and the inner ring electrode plate are electrically connected to the two poles of the induction coil, and a cavity for holding giant electrorheological fluid is provided between the outer ring electrode plate and the inner ring electrode plate.

[0015] In one embodiment, a first bearing is provided at both ends of the cavity between the outer ring electrode plate and the inner ring electrode plate. A transmission plate is fixedly connected to both ends of the cavity and contacts the rolling element on the first bearing. The transmission plate is electrically connected to one pole of the induction coil. The outer ring of the first bearing is an insulating outer ring, and the rolling element and the inner ring of the first bearing are respectively a conductive rolling element and a conductive inner ring.

[0016] The beneficial effects of adopting the above technical solution are as follows: one pole of the induction coil can be electrically connected to the inner ring plate through the transfer plate, the rolling element on the first bearing, and the inner ring on the first bearing in sequence; and even if the inner ring plate rotates with the rotor, the transfer plate can always be in contact with the rolling element on the first bearing, thereby ensuring the effective electrical connection between the induction coil and the inner ring plate; at the same time, the outer ring on the first bearing is an insulating outer ring, which can prevent the induction coil from being energized with the outer ring plate.

[0017] In one implementation, several induction coils are connected in series.

[0018] The beneficial effect of adopting the above technical solution is that several induction coils are connected in series to increase the voltage.

[0019] In one embodiment, the rotating giant electrorheological fluid energy harvesting damper includes a rectifier, the input end of which is electrically connected to the two ends of a plurality of induction coils connected in series, and the output end of which is electrically connected to the outer ring plate and the inner ring plate.

[0020] The beneficial effects of adopting this technical solution are as follows: since the current generated by the induction coil is alternating current, a rectifier is set up to convert the alternating current into direct current, so as to facilitate its use and storage as energy.

[0021] In one embodiment, the rotating giant current rheostat energy harvesting damper includes a step-up transformer, the input of which is electrically connected to the output of a rectifier, and the output of which is electrically connected to an outer ring plate and an inner ring plate, respectively.

[0022] The beneficial effects of adopting the above technical solution are as follows: the step-up transformer is used to increase the voltage so that a strong electric field is generated between the outer ring plate and the inner ring plate, which is conducive to changing the viscosity of the giant electrorheological fluid in the cavity.

[0023] In one embodiment, the rotating giant current rheostat energy harvesting damper includes an energy storage device, and the output terminals of the step-up transformer are electrically connected to the two poles of the energy storage device.

[0024] The beneficial effects of adopting the above technical solution are: the energy storage device can store the electrical energy generated by the induction coil and processed by the rectifier and step-up transformer.

[0025] In one embodiment, a cover plate is fixedly connected to the end of the rotor, and the cover plate is fixedly connected to the input shaft.

[0026] The beneficial effects of adopting the above technical solution are: the cover plate can seal the permanent magnet, and the rotor can rotate with the input shaft along with the cover plate.

[0027] In one embodiment, the housing includes an outer shell, with a first end cap and a second end cap detachably connected to each end of the outer shell.

[0028] The advantages of adopting the above technical solution are: the first end cover and the second end cover are easy to install and disassemble, which is beneficial for installing components such as the input shaft, rotor and stator.

[0029] In one embodiment, the middle portions of the first end cover and the second end cover are respectively connected to a second bearing and a third bearing, and the input shaft is rotatably connected to the second bearing and the third bearing.

[0030] The beneficial effects of adopting the above technical solution are as follows: the housing provides rotational support for the input shaft through the second and third bearings, so that the input shaft rotates more smoothly.

[0031] The beneficial effects of this invention are as follows:

[0032] The input shaft rotates due to vibration, causing the rotor and its several permanent magnets to rotate accordingly. This induces an electromotive force in the induction coils, creating an electric field between the outer and inner ring plates. This alters the viscosity of the electrorheological fluid within the cavity, thereby changing the damping force of the rotating giant electrorheological fluid energy harvesting damper. Therefore, this rotating giant electrorheological fluid energy harvesting damper can harvest the energy generated by vibration and utilize it in the damping force generation process for vibration isolation. Furthermore, this rotating giant electrorheological fluid energy harvesting damper integrates damping and energy harvesting, resulting in high integration and significantly reduced size. Attached Figure Description

[0033] The invention will now be described in more detail with reference to embodiments and the accompanying drawings.

[0034] Figure 1 A schematic diagram of the internal structure of the present invention is shown;

[0035] Figure 2 Showing Figure 1 A magnified view of a section at point A in the middle;

[0036] Figure 3Showing Figure 1 Axonometric drawing;

[0037] Figure 4 A schematic diagram of the structure of the present invention is shown;

[0038] Figure 5 Showing Figure 4 Sectional view at point BB;

[0039] In the accompanying drawings, the same parts use the same reference numerals. The drawings are not to scale.

[0040] Figure label:

[0041] 1-Housing, 101-Outer shell, 102-First end cover, 103-Second end cover, 2-Stator, 3-Iron core, 4-Induction coil, 5-Outer ring pole plate, 6-First bearing, 601-Outer ring, 602-Rolling element, 603-Inner ring, 7-Inner ring pole plate, 8-Rotor, 9-Permanent magnet, 10-Input shaft, 11-Transmission plate, 12-Second bearing, 13-Third bearing, 14-Cover plate, 15-Cavity. Detailed Implementation

[0042] The invention will now be further described with reference to the accompanying drawings.

[0043] This invention provides a rotary giant electrorheological fluid energy harvesting damper, such as... Figure 1 , Figure 3 and Figure 5 As shown, it includes:

[0044] Housing 1, on which an input shaft 10 is rotatably mounted;

[0045] Stator 2 is coaxially fixedly connected inside housing 1. Several iron cores 3 are evenly arranged circumferentially inside stator 2, and induction coils 4 are wound on the iron cores 3.

[0046] Rotor 8 is coaxially fixedly connected to input shaft 10. Several permanent magnets 9 are uniformly arranged circumferentially inside rotor 8, and the polarities of two adjacent permanent magnets 9 are opposite.

[0047] The outer ring electrode plate 5 is fixedly connected to the inner side of several iron cores 3, and the axis of the outer ring electrode plate 5 coincides with the axis of the input shaft 10.

[0048] Inner ring plate 7 is fixedly connected to the outer side of rotor 8, and the axis of inner ring plate 7 coincides with the axis of input shaft 10.

[0049] The outer ring plate 5 and the inner ring plate 7 are electrically connected to the two poles of the induction coil 4, respectively, and a cavity 15 for holding giant electrorheological fluid is provided between the outer ring plate 5 and the inner ring plate 7.

[0050] Understandably, the input shaft 10 rotates due to vibration, causing the rotor 8 and its several permanent magnets 9 to rotate accordingly. This generates an induced electromotive force in the several induction coils 4, creating an electric field between the outer ring plate 5 and the inner ring. This alters the viscosity of the electrorheological fluid in the cavity 15, thereby changing the damping force of the rotating giant electrorheological fluid energy harvesting damper. Therefore, this rotating giant electrorheological fluid energy harvesting damper can harvest the energy generated by vibration and apply it to the damping force generation process for vibration isolation. Furthermore, this rotating giant electrorheological fluid energy harvesting damper integrates damping and energy harvesting, resulting in high integration and significantly reduced size.

[0051] It should be noted that the polarities of two adjacent permanent magnets 9 are opposite, which helps to enhance the magnetic field around the induction coil 4 and thus enhance the energy harvesting efficiency; the input shaft 10 is connected to an external load, and the external load drives the input shaft 10 to rotate.

[0052] In one embodiment, such as Figure 1 , Figure 2 and Figure 5 As shown, the cavity 15 has a first bearing 6 located between the outer ring electrode plate 5 and the inner ring electrode plate 7 at both ends. The cavity 15 has a transmission plate 11 fixedly connected to the two ends, which is in contact with the rolling element 602 on the first bearing 6. The transmission plate 11 is electrically connected to one pole of the induction coil 4. The outer ring 601 on the first bearing 6 is an insulating outer ring. The rolling element 602 and the inner ring 603 on the first bearing 6 are a conductive rolling element and a conductive inner ring, respectively.

[0053] It is understandable that one pole of the induction coil 4 can be electrically connected to the inner ring plate 7 through the transmission plate 11, the rolling element 602 on the first bearing 6, and the inner ring 603 on the first bearing 6 in sequence; and even if the inner ring plate 7 rotates with the rotor 8, the transmission plate 11 can always be in contact with the rolling element 602 on the first bearing 6, thereby ensuring an effective electrical connection between the induction coil 4 and the inner ring plate 7; at the same time, the outer ring 601 on the first bearing 6 is an insulating outer ring, which can prevent this pole of the induction coil 4 from being energized with the outer ring plate 5.

[0054] It should be noted that the first bearing 6 can be a ball bearing, that is, the rolling element 602 is a ball.

[0055] It should also be noted that both ends of cavity 15 need to be sealed to prevent leakage of the giant electrorheological fluid in cavity 15.

[0056] In one embodiment, several induction coils 4 are connected in series to increase the voltage.

[0057] In one embodiment, the rotating giant electrorheological fluid energy harvesting damper includes a rectifier, the input end of which is electrically connected to the two ends of a plurality of induction coils 4 connected in series, and the output end of which is electrically connected to the outer ring plate 5 and the inner ring plate 7.

[0058] It is understandable that since the current generated by the induction coil 4 is alternating current, a rectifier is set up to convert the alternating current into direct current so that it can be used and stored as energy.

[0059] It should be noted that the rectifier can be a bridge rectifier.

[0060] In one embodiment, the rotating giant current rheostat energy harvesting damper includes a step-up transformer, the input of which is electrically connected to the output of a rectifier, and the output of which is electrically connected to the outer ring plate 5 and the inner ring plate 7, respectively.

[0061] Understandably, the step-up transformer is used to increase the voltage so that a strong electric field is generated between the outer ring plate 5 and the inner ring plate 7, which is beneficial to changing the viscosity of the giant electrorheological fluid in the cavity 15.

[0062] It should be noted that the voltage can be increased to the required level by adjusting the turns ratio of the windings inside the step-up transformer.

[0063] It should also be noted that both the permanent magnet 9 and the induction coil 4 in this rotary giant current rheostat energy harvesting damper can withstand high voltage, and the giant current rheostat has obvious damping characteristics under high voltage. Therefore, this rotary giant current rheostat energy harvesting damper has the characteristic of large output.

[0064] In one embodiment, the rotating giant current rheostat energy harvesting damper includes an energy storage device, and the output terminals of the step-up transformer are electrically connected to the two poles of the energy storage device.

[0065] Understandably, energy storage devices can store electrical energy generated by induction coils and processed by rectifiers and step-up transformers.

[0066] It should be noted that the energy storage device can be a storage battery.

[0067] In one embodiment, such as Figure 5 As shown, a cover plate 14 is fixedly connected to the end of the rotor 8, and the cover plate 14 is fixedly connected to the input shaft 10.

[0068] It is understandable that the cover plate 14 can seal the permanent magnet 9, and the rotor 8 can rotate with the input shaft 10 along with the cover plate 14.

[0069] In one embodiment, such as Figure 4 and Figure 5As shown, the housing 1 includes an outer shell 101, and the two ends of the outer shell 101 are respectively detachably connected to a first end cap 102 and a second end cap 103.

[0070] It is understandable that the first end cover 102 and the second end cover 103 are easy to install and remove, which is beneficial for installing components such as the input shaft 10, the rotor 8 and the stator 2.

[0071] In one embodiment, the middle portions of the first end cap 102 and the second end cap 103 are respectively connected to the second bearing 12 and the third bearing 13, and the input shaft 10 is rotatably connected to the second bearing 12 and the third bearing 13.

[0072] Understandably, housing 1 provides rotational support for input shaft 10 through second bearing 12 and third bearing 13, so that input shaft 10 rotates more smoothly.

[0073] In the description of this invention, it should be understood that the terms "upper", "lower", "bottom", "top", "front", "rear", "inner", "outer", "left", "right", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0074] While the invention has been described herein with reference to specific embodiments, it should be understood that these embodiments are merely examples of the principles and applications of the invention. Therefore, it should be understood that many modifications can be made to the exemplary embodiments, and other arrangements can be designed without departing from the spirit and scope of the invention as defined by the appended claims. It should be understood that different dependent claims and features described herein can be combined in ways different from those described in the original claims. It is also understood that features described in conjunction with individual embodiments can be used in other described embodiments.

Claims

1. A rotary giant electrorheological fluid energy harvesting damper, characterized in that, include: Housing (1), on which an input shaft (10) is rotatably mounted; Stator (2), the stator (2) is coaxially fixedly connected inside the housing (1), and a plurality of iron cores (3) are uniformly arranged in the circumferential direction inside the stator (2), and an induction coil (4) is wound on the iron core (3). The rotor (8) is coaxially fixedly connected to the input shaft (10). A plurality of permanent magnets (9) are uniformly arranged in the circumferential direction inside the rotor (8), and the polarities of two adjacent permanent magnets (9) are opposite. Outer ring electrode plate (5), the outer ring electrode plate (5) is fixedly connected to the inner side of several iron cores (3), and the axis of the outer ring electrode plate (5) coincides with the axis of the input shaft (10); Inner ring electrode plate (7), the inner ring electrode plate (7) is fixedly connected to the outer side of the rotor (8), and the axis of the inner ring electrode plate (7) coincides with the axis of the input shaft (10); The outer ring electrode (5) and the inner ring electrode (7) are electrically connected to the two poles of the induction coil (4), and a cavity (15) for holding giant electrorheological fluid is provided between the outer ring electrode (5) and the inner ring electrode (7).

2. The rotary giant electrorheological fluid energy harvesting damper according to claim 1, characterized in that, The cavity (15) is provided with a first bearing (6) located between the outer ring electrode plate (5) and the inner ring electrode plate (7) at both ends. The cavity (15) is fixedly connected with a transmission plate (11) that contacts the rolling element (602) on the first bearing (6). The transmission plate (11) is electrically connected to one pole of the induction coil (4). The outer ring (601) on the first bearing (6) is an insulating outer ring. The rolling element (602) and the inner ring (603) on the first bearing (6) are conductive rolling elements and conductive inner rings, respectively.

3. A rotary giant electrorheological fluid energy harvesting damper according to claim 1, characterized in that, Several of the aforementioned induction coils (4) are connected in series.

4. A rotary giant electrorheological fluid energy harvesting damper according to claim 3, characterized in that, The rectifier includes an input terminal that is electrically connected to the two ends of a plurality of induction coils (4) connected in series, and an output terminal that is electrically connected to the outer ring plate (5) and the inner ring plate (7).

5. A rotary giant electrorheological fluid energy harvesting damper according to claim 3, characterized in that, It includes a rectifier and a step-up transformer. The input end of the rectifier is electrically connected to the two ends of a plurality of induction coils (4) connected in series. The input end of the step-up transformer is electrically connected to the output end of the rectifier. The output end of the step-up transformer is electrically connected to the outer ring plate (5) and the inner ring plate (7).

6. A rotary giant electrorheological fluid energy harvesting damper according to claim 5, characterized in that, It includes an energy storage device, and the output terminals of the step-up transformer are electrically connected to the two poles of the energy storage device.

7. A rotary giant electrorheological fluid energy harvesting damper according to claim 1, characterized in that, The end of the rotor (8) is fixedly connected to a cover plate (14), and the cover plate (14) is fixedly connected to the input shaft (10).

8. A rotary giant electrorheological fluid energy harvesting damper according to claim 1, characterized in that, The housing (1) includes an outer shell (101), and the two ends of the outer shell (101) are respectively detachably connected to a first end cap (102) and a second end cap (103).

9. A rotary giant electrorheological fluid energy harvesting damper according to claim 8, characterized in that, The middle parts of the first end cover and the second end cover are respectively connected to the second bearing (12) and the third bearing (13), and the input shaft (10) is rotatably connected to the second bearing (12) and the third bearing (13).

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