Shock absorber, electric energy recovery system and vehicle

Abstract

The utility model relates to the technical field of vehicle shock absorber structures, and particularly discloses a shock absorber, an electric energy recovery system and a vehicle, the shock absorber comprises a telescopic outer ring and a power generation film, the power generation film is arranged on the telescopic outer ring, and the power generation film is configured to stretch out and draw back along with the telescopic outer ring to generate electric energy. According to the shock absorber, the power generation film is arranged on the telescopic outer ring, when the shock absorber stretches out and draws back under the impact force, the shock absorber converts impact energy into compression potential energy, the telescopic outer ring stretches out and draws back at the same time, and the power generation film stretches out and draws back along with the telescopic outer ring, so that a part of compression potential energy is converted into electric energy, and the energy recovery function is achieved. In addition, due to the fact that the power generation film converts a part of compression potential energy into electric energy, the proportion of the shock absorber for converting the compression potential energy into kinetic energy and heat energy is reduced, the deformation amount and the deformation frequency of the shock absorber are reduced, fatigue damage of parts in the shock absorber is reduced, and the service life of the shock absorber is prolonged.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of vehicle shock absorber structure, and particularly relates to a shock absorber, an electric energy recovery system and a vehicle. BACKGROUND

[0002] When an automobile is running, the unevenness of the road surface or local potholes and other factors will cause the vehicle chassis suspension to be impacted. In order to reduce the impact of the road surface on the passengers in the vehicle, the current chassis suspension generally uses sheet metal coil springs, air springs and other shock absorbers to absorb impact energy.

[0003] Whether it is a sheet metal coil spring or an air spring, the impact energy of the ground is converted into the compression potential energy of the deformation of the parts through the principle of deformation of parts, and then the compression potential energy is converted into spring kinetic energy and heat energy, and the impact energy is consumed through this cycle, thereby reducing the impact on the passengers in the vehicle. Although this method of converting impact energy into compression potential energy and then consuming it through kinetic energy and heat energy ensures the comfort of passengers, it does not realize energy recovery and is not environmentally friendly and energy-saving. In addition, the excessive consumption of kinetic energy and heat energy by the spring of the shock absorber will aggravate the fatigue damage of the parts, thereby reducing the service life of the shock absorber. CONTENT OF THE INVENTION

[0004] In view of the above, it is necessary to provide a shock absorber, an electric energy recovery system and a vehicle to realize energy recovery and improve the service life of the shock absorber.

[0005] The shock absorber provided by the embodiment of the present application comprises a telescopic outer ring and a power generation film, the power generation film is arranged in the telescopic outer ring, and the power generation film is configured to stretch and contract with the telescopic outer ring to generate electric energy.

[0006] In some embodiments, the power generation film is arranged on the inner side wall of the telescopic outer ring.

[0007] In some embodiments, the power generation film is arranged in the telescopic outer ring and located between the inner side wall and the outer side wall of the telescopic outer ring.

[0008] In some embodiments, the power generation film is a silicon-based piezoelectric film or a silicon-based friction power generation film.

[0009] In some embodiments, the power generation film and the telescopic outer ring are an integral structure.

[0010] In some embodiments, the shock absorber is an air spring.

[0011] In some embodiments, the shock absorber further comprises a top base, an air bag, a piston, and an electric energy transmission interface, the top base is configured to be connected with a vehicle frame, the piston is movably arranged in the air bag, one of the piston and the air bag is connected with the top base, the telescopic outer ring is sleeved on the piston and connected with the air bag, the power generation film extends to the top base at one end close to the top base, and the electric energy transmission interface is arranged on the top base and electrically connected with the power generation film.

[0012] In some embodiments, the top base has a connecting portion configured to be connected with the vehicle frame, and the electric energy transmission interface is arranged on the connecting portion.

[0013] The shock absorber provided by the embodiments of the present application can convert impact energy into compression potential energy when the shock absorber is subjected to impact force and expands or contracts, the telescopic outer ring expands or contracts at the same time, the power generation film expands or contracts with the telescopic outer ring, and a part of the compression potential energy is converted into electric energy, thereby achieving the energy recovery function. In addition, since the power generation film converts a part of the compression potential energy into electric energy, the proportion of the compression potential energy converted into kinetic energy and thermal energy by the shock absorber is reduced, thereby reducing the deformation amount and deformation frequency of the shock absorber, and further reducing the fatigue damage of the components in the shock absorber, and prolonging the service life of the shock absorber.

[0014] The embodiments of the present application also provide an electric energy recovery system, which comprises an electric energy storage module and the shock absorber as described above, and the electric energy storage module is electrically connected with the power generation film.

[0015] The electric energy recovery system provided by the embodiments of the present application can achieve the energy recovery function and prolong the service life of the shock absorber by arranging the shock absorber comprising the power generation film, and the electric energy generated by the power generation film can be conveniently recovered and stored by arranging the electric energy storage module electrically connected with the power generation film, so that the electrical elements of the vehicle can use the recovered electric energy, and the vehicle is more energy-saving and environmentally friendly.

[0016] The embodiments of the present application also provide a vehicle comprising the electric energy recovery system as described above or the shock absorber as described above.

[0017] The vehicle provided by the embodiments of the present application can achieve the energy recovery function and prolong the service life of the shock absorber by arranging the shock absorber comprising the power generation film or the electric energy recovery system comprising the shock absorber, so that the vehicle is more energy-saving and environmentally friendly, and the maintenance cost of the vehicle is reduced. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 is a schematic diagram of the shock absorber provided by an embodiment of the present application.

[0019] Figure 2 is Figure 1 is a schematic diagram of the shock absorber shown in FIG. 1 along the direction II-II.

[0020] Figure 3 is Figure 2 is an enlarged schematic view of the A region in FIG. 1.

[0021] Figure 4 is a schematic view of a shock absorber according to another embodiment of the present application.

[0022] Figure 5 is Figure 4 is a schematic view of the shock absorber shown in FIG. 2 along the V-V direction.

[0023] Figure 6 is Figure 5 is an enlarged schematic view of the B region in FIG. 3.

[0024] Figure 7 is a schematic view of an electric energy recovery system according to an embodiment of the present application.

[0025] Figure 8 is a schematic view of a vehicle according to an embodiment of the present application.

[0026] Main element symbol explanation: vehicle 1000, electric energy recovery system 100, shock absorber 1, front shock absorbing air spring 101, rear shock absorbing air spring 102, telescopic outer ring 11, power generation film 12, top seat 13, connecting part 131, air bag 14, bag skin 141, protective sleeve 142, support ring 143, protective sleeve 144, piston 15, piston sleeve 151, piston sleeve 152, electric energy transmission interface 16, bottom seat 17, electric energy storage module 2, vehicle frame 200, vehicle wheel 300. DETAILED DESCRIPTION

[0027] Embodiments of the present application are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals represent the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by reference to the drawings are exemplary only, and are used only for explanation of the present application, and cannot be understood as a limitation of the present application.

[0028] In the description of the present application, it needs to be understood that the terms indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the drawings, which are only for the purpose of facilitating the description of the present application and simplifying the description, and do not indicate or imply that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application. In addition, the terms "first", "second" are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first", "second" can be explicitly or implicitly included one or more of the features. In the description of the present application, it needs to be explained that the meaning of "a plurality of" is two or more, unless otherwise explicitly specified and limited.

[0029] In the description of the present application, it needs to be explained that unless otherwise explicitly specified and limited, the term "connection" should be understood broadly, for example, it can be a fixed connection, or a detachable connection, or an integral connection; it can be a mechanical connection, or an electrical connection or can communicate with each other, it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal communication of two elements or the interaction relationship between two elements. For those skilled in the art, the specific meaning of the above-mentioned term in the present application can be understood according to the specific circumstances.

[0030] Some embodiments of the present application will be described in detail below with reference to the accompanying drawings.

[0031] Please refer to Figure 1 and Figure 8 The embodiment of the present application provides a shock absorber 1 applied to a vehicle 1000. The vehicle 1000 can be a fuel automobile, a hybrid automobile, an electric automobile, etc. For the sake of understanding, the embodiment of the present application takes the vehicle 1000 as an electric automobile for example, which is obviously not a limitation on the embodiment of the present application.

[0032] Please refer to Figures 1 to 6 In the embodiment, the shock absorber 1 includes a telescopic outer ring 11 and a power generation film 12, the power generation film 12 is arranged in the telescopic outer ring 11, and the power generation film 12 is configured to be telescopic with the telescopic outer ring 11 to generate electric energy.

[0033] Exemplarily, the shock absorber 1 can be an air spring, or can be provided with buffering by a sheet metal coil spring or a hydraulic cylinder. When the shock absorber 1 is an air spring, the telescopic outer ring 11 can be a dust cover of the air spring. When the shock absorber 1 is provided with buffering by a sheet metal coil spring or a hydraulic cylinder, the telescopic outer ring 11 is sleeved on the outside of the sheet metal coil spring or the hydraulic cylinder, and the telescopic outer ring 11 protects and provides dustproof function for the sheet metal coil spring or the hydraulic cylinder.

[0034] Whether the shock absorber 1 is an air spring, or the shock absorber 1 provides cushioning with one of sheet metal coil springs and hydraulic cylinders, when the shock absorber 1 bears impact force and occurs expansion and contraction, the shock absorber 1 converts impact energy into compression potential energy, the telescopic outer ring 11 occurs expansion and contraction at the same time, the power generation film 12 expands and contracts with the telescopic outer ring 11, thereby converting a part of the compression potential energy into electric energy, achieving the energy recovery function. In addition, since the power generation film 12 converts a part of the compression potential energy into electric energy, the proportion of the compression potential energy converted into kinetic energy and thermal energy by the shock absorber 1 is reduced, thereby reducing the deformation amount and deformation frequency of the shock absorber 1, and further reducing the fatigue damage of the parts in the shock absorber 1, thereby prolonging the service life of the shock absorber 1.

[0035] In the embodiment, the power generation film 12 is a silicon-based piezoelectric film or a silicon-based friction power generation film. The silicon-based piezoelectric film is a film structure integrating piezoelectric materials and a silicon substrate, and has a high electromechanical coupling coefficient, which can efficiently convert mechanical energy into electric energy, thereby improving the conversion rate of the power generation film 12 converting the compression potential energy of the shock absorber 1 into electric energy. The silicon-based friction power generation film is based on the triboelectric effect, that is, the contact and separation of two materials produce charge separation and electric energy output, the silicon-based friction power generation film is based on silicon, and combines flexible materials (such as silicone) or surface modification layers (such as organic monolayers) to improve the triboelectric performance, and the output voltage of the silicon-based friction power generation film is relatively high, thereby facilitating the collection of electric energy.

[0036] In the embodiment, the power generation film 12 is arranged on the inner side wall of the telescopic outer ring 11. In this way, it can effectively avoid damage to the power generation film 12 caused by foreign objects such as stones hitting the power generation film 12, and can also effectively avoid corrosion of the power generation film 12 caused by mud splashing onto the power generation film 12, thereby prolonging the service life of the power generation film 12.

[0037] In other embodiments, the power generation film 12 can also be arranged inside the telescopic outer ring 11, and the power generation film 12 is located between the inner side wall and the outer side wall of the telescopic outer ring 11. In this way, it can also effectively avoid damage to the power generation film 12 caused by foreign objects such as stones hitting the power generation film 12, and can also effectively avoid corrosion of the power generation film 12 caused by mud splashing onto the power generation film 12, thereby prolonging the service life of the power generation film 12, which is not limited in the embodiments of the application.

[0038] In the embodiment, the power generation film 12 and the telescopic outer ring 11 are an integral structure. Specifically, whether the power generation film 12 is arranged on the inner side wall of the telescopic outer ring 11 or between the inner side wall and the outer side wall of the telescopic outer ring 11, the power generation film 12 and the telescopic outer ring 11 can be an integral structure.

[0039] Since the power generation film 12 is stretched and contracted with the stretchable outer ring 11 to generate electric energy, the power generation film 12 is prone to be separated from the stretchable outer ring 11 after multiple deformations, thereby affecting the electric energy conversion rate of the power generation film 12. By setting the power generation film 12 and the stretchable outer ring 11 as an integrated structure, the firmness of the connection between the power generation film 12 and the stretchable outer ring 11 is improved, and the probability of separation between the power generation film 12 and the stretchable outer ring 11 is reduced, thereby ensuring the electric energy conversion rate of the power generation film 12.

[0040] In the embodiment, the stretchable outer ring 11 can be made of rubber material. When the stretchable outer ring 11 is injection molded, the power generation film 12 is integrally formed with the stretchable outer ring 11, thereby reducing the difficulty of integrally forming the power generation film 12 and the stretchable outer ring 11 and improving the stability of the structure after the power generation film 12 and the stretchable outer ring 11 are formed.

[0041] In the embodiment, the shock absorber 1 is an air spring. Specifically, the stretchable outer ring 11 is a dust cover of the air spring. The air spring adjusts the gas pressure inside to obtain different spring stiffnesses, thereby achieving a better damping effect. However, because the whole system is relatively complex, the durability of the air spring is not as good as that of a metal spring, and the cost of parts is higher, and the corresponding maintenance cost is also very high, so the air spring is generally used for high-end vehicles. By setting the power generation film 12 to convert part of the compression potential energy of the air spring into electric energy, the proportion of the compression potential energy of the air spring converted into kinetic energy and heat energy is reduced. Under the condition of receiving the same impact force, the deformation amount and frequency of the air spring of the embodiment are smaller than those of the traditional air spring, so the fatigue damage of the parts of the air spring is smaller, and the service life is higher, thereby improving the economy of the vehicle used by the customer.

[0042] Please refer to Figures 1 to 6 , in the embodiment, when the shock absorber 1 is an air spring, the shock absorber 1 further includes a top seat 13, an air bag 14, a piston 15, and an electric energy transmission interface 16. The top seat 13 is used to be connected with a vehicle frame 200 (as shown in Figure 8 ), the piston 15 is movably arranged in the air bag 14, one of the piston 15 and the air bag 14 is connected with the top seat 13, the stretchable outer ring 11 is sleeved on the piston 15 and connected with the air bag 14, one end of the power generation film 12 close to the top seat 13 extends to the top seat 13, and the electric energy transmission interface 16 is arranged on the top seat 13 and electrically connected with the power generation film 12.

[0043] Specifically, as shown in Figure 1 , Figure 2 and Figure 3 , the shock absorber 1 can be a front shock air spring 101, as shown in Figure 4 , Figure 5 and Figure 6As shown, the shock absorber 1 can also be a rear shock air spring 102, the principle of the front shock air spring 101 and the rear shock air spring 102 is the same, but the structure is usually different.

[0044] As shown in Figure 1 , Figure 2 and Figure 3 , when the shock absorber 1 is the front shock air spring 101, the air bag 14 is connected with the top seat 13, the top seat 13 is connected with the vehicle frame 200, the piston 15 is movably arranged in the air bag 14 to adjust the pressure in the air bag 14, thereby providing cushioning, the end of the piston 15 away from the top seat 13 is connected with the swing arm (not shown) of the vehicle wheel 300 (as shown in Figure 8 ), the telescopic outer ring 11 is sleeved on the piston 15 and connected with the air bag 14, the end of the power generation film 12 close to the top seat 13 extends to the top seat 13, and the power transmission interface 16 is arranged on the top seat 13 and electrically connected with the power generation film 12.

[0045] As shown in Figure 4 , Figure 5 and Figure 6 , when the shock absorber 1 is the rear shock air spring 102, the rear shock air spring 102 further comprises a base 17, the piston 15 is connected with the top seat 13, the top seat 13 is connected with the vehicle frame 200, the air bag 14 is arranged between the base 17 and the top seat 13 and connected with the base 17, the piston 15 is movably arranged in the air bag 14 to adjust the pressure in the air bag 14, thereby providing cushioning, the base 17 is connected with the swing arm (not shown) of the vehicle wheel 300 (as shown in Figure 8 ), the telescopic outer ring 11 is sleeved on the piston 15 and connected with the air bag 14, the end of the power generation film 12 close to the top seat 13 extends to the top seat 13, and the power transmission interface 16 is arranged on the top seat 13 and electrically connected with the power generation film 12.

[0046] By arranging the power transmission interface 16 to be electrically connected with the power generation film 12, it is convenient for the power generation film 12 to be electrically connected with other elements on the vehicle 1000 through the power transmission interface 16. In addition, since the top seat 13 is connected with the vehicle frame 200, the top seat 13 moves with the vehicle frame 200, and the top seat 13 does not stretch and contract with the outer ring of the air spring, by arranging the power transmission interface 16 on the top seat 13, it is convenient and stable for the power transmission interface 16 to be electrically connected with other elements on the vehicle 1000. By arranging the end of the power generation film 12 close to the top seat 13 to extend to the top seat 13, the part of the power generation film 12 extending to the top seat 13 will not be deformed with the movement of the air spring, thereby effectively avoiding the connection line of the power generation film 12 and the power transmission interface 16 being pulled off, and further improving the stability of the connection of the power generation film 12 and the power transmission interface 16.

[0047] In the front shock-absorbing air spring 101, the structures of the air bag 14 and the piston 15 are both mature technologies, and thus are not described herein.

[0048] In the rear shock-absorbing air spring 102, the air bag 14 includes a bag skin 141, a sleeve 142, a support ring 143, and a protective sleeve 144. The sleeve 142 is sleeved on the outside of the bag skin 141. The support ring 143 is arranged in the bag skin 141 and supports the bag skin 141 on the sleeve 142. The base 17 is connected to the end of the bag skin 141 away from the top base 13. The protective sleeve 144 is sleeved on the connection between the base 17 and the bag skin 141 and is connected with the sleeve 142. The protective sleeve 144 improves the sealing effect of the connection between the base 17 and the bag skin 141 and can prevent dust from entering the connection. The piston 15 includes a piston sleeve 151 and a piston sleeve 152. The piston sleeve 151 is movably inserted into the end of the bag skin 141 away from the base 17. The cavity in the piston sleeve 151 is in communication with the cavity in the bag skin 141. The piston sleeve 152 is made of flexible material. The piston sleeve 152 is sleeved on the outside of the piston sleeve 151 and is sealingly connected with the bag skin 141. The top base 13 seals the end of the piston sleeve 151 away from the base 17. The telescopic outer ring 11 is sleeved on the outside of the piston sleeve 152, and the two ends of the telescopic outer ring 11 are connected with the top base 13 and the sleeve 142, respectively.

[0049] When the rear shock-absorbing air spring 102 is impacted, the piston 15 reciprocates and adjusts the air pressure in the bag skin 141 and the piston sleeve 151, thereby achieving a shock-absorbing effect.

[0050] In the present embodiment, whether the shock absorber 1 is the front shock-absorbing air spring 101 or the rear shock-absorbing air spring 102, the top base 13 has a connecting portion 131 for connecting with the vehicle frame 200. The connecting portion 131 can be a bracket, a hanger, or the like. By providing the connecting portion 131, the convenience of connecting the shock absorber 1 with the vehicle frame 200 is improved.

[0051] Please refer to Figure 4 In an embodiment, the electric energy transmission interface 16 is arranged on the connecting portion 131. Since the connecting portion 131 is directly connected with the vehicle frame 200, by arranging the electric energy transmission interface 16 on the connecting portion 131, the electric energy transmission interface 16 is closer to the vehicle frame 200, thereby facilitating the electrical connection of other elements on the vehicle 1000 with the power generation film 12 through the electric energy transmission interface 16.

[0052] In summary, the shock absorber 1 of the embodiment of the present application converts the impact energy into compression potential energy when the shock absorber 1 is subjected to impact force and expands or contracts, the telescopic outer ring 11 expands or contracts at the same time, the power generation film 12 expands or contracts with the telescopic outer ring 11, thereby converting a part of the compression potential energy into electric energy, and the energy recovery function is realized. In addition, since the power generation film 12 converts a part of the compression potential energy into electric energy, the proportion of the compression potential energy converted into kinetic energy and thermal energy by the shock absorber 1 is reduced, thereby reducing the deformation amount and deformation frequency of the shock absorber 1, and further reducing the fatigue damage of the parts in the shock absorber 1, and prolonging the service life of the shock absorber 1.

[0053] For reference Figure 7 The embodiment of the present application also provides an electric energy recovery system 100, which comprises the electric energy storage module 2 and the shock absorber 1 as described above, and the electric energy storage module 2 is electrically connected with the power generation film 12. Specifically, the electric energy storage module 2 can be a battery, and the electric energy storage module 2 is electrically connected with the power generation film 12 through the electric energy transmission interface 16.

[0054] The electric energy recovery system 100 of the embodiment of the present application realizes the energy recovery function and prolongs the service life of the shock absorber 1 by arranging the shock absorber 1 comprising the power generation film 12, and the electric energy generated by the power generation film 12 is conveniently recovered and stored by arranging the electric energy storage module 2 electrically connected with the power generation film 12, so that the recovered electric energy is used by the electrical elements of the vehicle 1000, and the vehicle 1000 is more energy-saving and environmentally friendly.

[0055] In other embodiments, the electric energy recovery system 100 can further comprise a transformer (not shown in the figure), a voltage stabilizer (not shown in the figure), an inverter (not shown in the figure), etc., which are not limited in the embodiment of the present application.

[0056] For reference Figure 8 The embodiment of the present application also provides a vehicle 1000, which comprises the electric energy recovery system 100 as described above or the shock absorber 1 as described above.

[0057] The vehicle 1000 of the embodiment of the present application realizes the energy recovery function and prolongs the service life of the shock absorber 1 by arranging the shock absorber 1 comprising the power generation film 12 or the electric energy recovery system 100 comprising the shock absorber 1, so that the vehicle 1000 is more energy-saving and environmentally friendly, and the maintenance cost of the vehicle 1000 is reduced.

[0058] It is apparent that the present application is not limited to the details of the foregoing exemplary embodiments, and that the present application can be implemented in other specific forms without departing from the spirit or essential characteristics of the application. Therefore, the embodiments should be considered in all respects as illustrative and not restrictive, the scope of the application being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein.

[0059] Finally, it should be noted that the above embodiments are merely used to illustrate the technical solutions of the present application, rather than limit the present application. Although the present application is described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present application can be modified or equivalently replaced, without departing from the spirit and scope of the technical solutions of the present application.

Claims

1. A shock absorber characterized by, The shock absorber comprises a telescopic outer ring and a power generation film, the power generation film is arranged in the telescopic outer ring, and the power generation film is configured to stretch and contract with the telescopic outer ring to generate electric energy.

2. The shock absorber of claim 1 wherein, The power generation film is arranged on the inner side wall of the telescopic outer ring.

3. The shock absorber of claim 1 wherein, The power generation film is arranged in the telescopic outer ring and between the inner side wall and the outer side wall of the telescopic outer ring.

4. The shock absorber of claim 1 wherein, The power generation film is a silicon-based piezoelectric film or a silicon-based friction power generation film.

5. The shock absorber according to any one of claims 1 to 4, wherein The power generation film and the telescopic outer ring are in an integrated structure.

6. The damper according to any one of claims 1 to 4, wherein The shock absorber is an air spring.

7. The shock absorber of claim 6 wherein, The shock absorber further comprises a top base, an air bag, a piston, and an electric energy transmission interface, the top base is used to be connected with a vehicle frame, the piston is movably arranged in the air bag, one of the piston and the air bag is connected with the top base, the telescopic outer ring is sleeved on the piston and connected with the air bag, one end of the power generation film close to the top base extends to the top base, and the electric energy transmission interface is arranged on the top base and electrically connected with the power generation film.

8. The shock absorber of claim 7 wherein, The top base has a connecting part used to be connected with the vehicle frame, and the electric energy transmission interface is arranged on the connecting part.

9. An electrical energy recovery system characterized by, The shock absorber comprises an electric energy storage module and the shock absorber according to any one of claims 1 to 8, and the electric energy storage module is electrically connected with the power generation film.

10. A vehicle characterized by comprising: The shock absorber comprises the electric energy recovery system according to claim 9 or the shock absorber according to any one of claims 1 to 8.

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