Mining truck vibration energy recovery system

Abstract

A vibration energy recovery system for mining trucks includes an energy storage unit, a vibration damping unit, and an energy recovery unit. The energy storage unit includes a lithium-carbon supercapacitor module. The vibration damping unit includes a cylinder and a piston rod. A pressure chamber is provided inside the cylinder, and the end of the piston rod slides within the pressure chamber. The energy recovery unit includes an electromagnetic component and a piezoelectric component. The electromagnetic component includes a permanent magnet and an induction coil. The permanent magnet is connected to the piston rod and located within the pressure chamber. The induction coil is located on the side wall of the cylinder. Movement of the piston rod causes the permanent magnet to move relative to the induction coil, cutting magnetic field lines to generate electricity. The piezoelectric component is located within the pressure chamber and generates a piezoelectric effect based on changes in external pressure. The piezoelectric component and the induction coil are respectively connected to the lithium-carbon supercapacitor module. This disclosed vibration energy recovery system for mining trucks can provide vibration damping protection for the energy storage unit and also recover vibration energy.

Description

Technical Field

[0001] This disclosure relates to the field of energy recovery technology, and in particular to a vibration energy recovery system for mining trucks. Background Technology

[0002] Currently, mining trucks and other engineering vehicles mainly use power batteries as their power source. However, because mining trucks frequently experience bumps and vibrations when operating in mining areas with complex terrain, vibration damping devices are generally used to protect the power batteries from vibration. However, current vibration damping devices only have the function of damping vibration and do not recover and utilize the vibration energy.

[0003] Moreover, the power batteries mainly use lead-acid batteries or lithium batteries. When the charging and discharging speed of lead-acid batteries or lithium batteries is slow, it will affect the efficiency of mining truck operation and is not conducive to energy recovery. Under the conditions of frequent start-stop and hill climbing and other high-power discharge, it will affect the battery life. Utility Model Content

[0004] The purpose of this disclosure is to provide a vibration energy recovery system for mining trucks, which can provide vibration reduction protection for the energy storage unit, and can also recover vibration energy to supplement the electrical energy of the energy storage unit. It also features fast charging speed, high energy recovery efficiency, and long lifespan.

[0005] Therefore, a vibration energy recovery system for mining trucks includes an energy storage unit, a vibration damping unit, and an energy recovery unit. The energy storage unit includes a lithium-carbon supercapacitor module. The vibration damping unit includes a cylinder and a piston rod. The cylinder has a pressure chamber filled with hydraulic oil. The end of the piston rod is slidably disposed within the pressure chamber. The energy recovery unit includes an electromagnetic component and a piezoelectric component. The electromagnetic component includes a permanent magnet and an induction coil. The permanent magnet is connected to the piston rod and disposed within the pressure chamber. The induction coil is disposed on the side wall of the cylinder. Movement of the piston rod can drive the permanent magnet to move relative to the induction coil to cut magnetic field lines and generate electricity. The piezoelectric component is disposed within the pressure chamber and is used to generate a piezoelectric effect according to changes in external pressure. The piezoelectric component and the induction coil are respectively connected to the lithium-carbon supercapacitor module.

[0006] The beneficial effects of this disclosure are as follows: The mining truck vibration energy recovery system integrates electromagnetic and piezoelectric components into a vibration damping unit. Under external vibration, the reciprocating motion of the piston rod drives the permanent magnet to move synchronously, allowing the permanent magnet to move relative to the induction coil. This continuously cuts magnetic field lines to generate electricity, which is then stored in the energy storage unit. Simultaneously, pressure changes within the pressure chamber act on the piezoelectric component to generate piezoelectricity, which is also stored in the energy storage unit. Therefore, the mining truck vibration energy recovery system of this disclosure not only provides vibration damping protection for the energy storage unit but also converts external vibration energy into electrical energy to replenish the energy storage unit, thereby improving its endurance.

[0007] The energy storage unit uses lithium-carbon supercapacitor modules as energy storage elements. It not only has the instantaneous high-power compensation capability of traditional supercapacitors, making energy recovery efficiency higher, but also can adapt to the high-power discharge conditions of mining trucks. In addition, it also has high energy density, which can provide mining trucks with a longer operating time. Attached Figure Description

[0008] Figure 1 This is a simplified structural diagram of the vibration energy recovery system for mining trucks disclosed herein.

[0009] Figure 2 This is a schematic diagram of an example of the vibration energy recovery system for mining trucks disclosed herein.

[0010] Figure 3 for Figure 2 Enlarged view of point A.

[0011] Figure 4 This is a schematic diagram of another example of the vibration energy recovery system for mining trucks disclosed herein.

[0012] Figure 5 for Figure 5 Enlarged view of point B.

[0013] Figure 6 for Figure 4 A cross-sectional view of the piezoelectric component of the mine truck vibration energy recovery system.

[0014] The reference numerals in the attached figures are explained as follows:

[0015] 1 lithium-carbon supercapacitor module 31 permanent magnets

[0016] 2 vibration damping units 32 induction coils

[0017] 21 cylinders, 4 piezoelectric components

[0018] 211 Pressure chamber 41 Outer shell

[0019] 22 Piston Rod 411 Through Hole

[0020] 23 Elastic reset element 42 Piezoelectric sheet

[0021] 24 mounting bases and 5 elastic elements

[0022] 25 vibration damping pads and 6 battery packs

[0023] 3 Electromagnetic components 7 Electromagnets Detailed Implementation

[0024] In the description of this disclosure, unless otherwise expressly specified and limited, the term "connection" should be interpreted broadly, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this disclosure based on the specific circumstances.

[0025] The mining truck vibration energy recovery system disclosed herein is mainly used for mining trucks operating under frequent bumpy and vibrating conditions.

[0026] Reference Figure 1 , Figure 2 and Figure 4 The mining truck vibration energy recovery system includes an energy storage unit, a vibration damping unit 2, and an energy recovery unit. The energy storage unit serves as a power source to provide power to the mining truck. The energy storage unit is installed on the vibration damping unit 2, which is mounted on the mining truck to provide vibration damping protection for the energy storage unit.

[0027] The energy storage unit includes a lithium-carbon supercapacitor module 1, and the vibration damping unit 2 includes a damper. The damper includes a cylinder 21 and a piston rod 22. The cylinder 21 has a pressure chamber 211 filled with hydraulic oil. One end of the piston rod 22 is slidably disposed within the pressure chamber 211, and the other end of the piston rod 22 is located outside the cylinder 21 and is used to connect with a mining truck. The piston rod 22 can reciprocate within the cylinder 21 under external vibration to generate damping force through pressure changes within the pressure chamber 211 to buffer vibration.

[0028] The energy recovery unit includes an electromagnetic component 3 and a piezoelectric component 4. The electromagnetic component 3 includes a permanent magnet 31 and an induction coil 32. The permanent magnet 31 is connected to the piston rod 22 and is located in the pressure chamber 211. The induction coil 32 is located on the side wall of the cylinder 21. The piezoelectric component 4 is located in the pressure chamber 211 and is used to generate a piezoelectric effect according to changes in external pressure. The piezoelectric component 4 and the induction coil 32 are connected to the lithium-carbon supercapacitor module 1 through a rectifier circuit.

[0029] The reciprocating motion of the piston rod 22 drives the permanent magnet 31 to move synchronously, enabling the permanent magnet 31 to move relative to the induction coil 32. This continuously cuts magnetic field lines to generate electricity, which is then stored in the energy storage unit. Simultaneously, pressure changes within the pressure chamber 211 act on the piezoelectric component 4 to generate piezoelectricity, which is also stored in the energy storage unit. Therefore, the mining truck vibration energy recovery system of this disclosure, by integrating the electromagnetic component 3 and the piezoelectric component 4 onto the vibration damping unit 2, not only provides vibration damping protection for the energy storage unit but also converts vibration energy into electrical energy to replenish the energy storage unit, thereby improving the energy storage unit's endurance.

[0030] Furthermore, the energy storage unit uses a lithium-carbon supercapacitor module 1 as the energy storage element, which is composed of several individual lithium-carbon supercapacitor cells. Individual lithium-carbon supercapacitor cells possess high energy density and the instantaneous high-power compensation capability of traditional supercapacitors, along with advantages such as high charge / discharge rates and long cycle life. This gives the lithium-carbon supercapacitor module 1 excellent endurance, while also being able to adapt to the frequent high-power discharge conditions of mining trucks. Moreover, its faster charge / discharge speed shortens the charging time of mining trucks, improving their operational efficiency, extending cycle life, and reducing subsequent maintenance costs.

[0031] The lithium-carbon supercapacitor cells can be any suitable publicly available lithium-carbon supercapacitor cells. For example, lithium-carbon supercapacitor cells manufactured by Fuwade Electronics (Dongguan) Co., Ltd. (now Fuwade New Energy Technology (Dongguan) Co., Ltd.), such as the ZFC4.2V15000F (7AH) cell.

[0032] In one example, refer to Figure 2 and Figure 4 The vibration damping unit 2 includes a mounting base 24 and a vibration damping pad 25 disposed opposite to each other. The vibration damping pad 25 is used to install on the mining truck, and the energy storage unit is installed on the mounting base 24. The cylinder 21 and the piston rod 22 are disposed between the mounting base 24 and the vibration damping pad 25. The end of the cylinder 21 away from the piston rod 22 is connected to the vibration damping pad 25, and the end of the piston rod 22 away from the cylinder 21 is connected to the mounting base 24.

[0033] Specifically, the vibration damping unit 2 also includes an elastic reset member 23, which is connected to the piston rod 22. The elastic reset member 23 is used to absorb part of the vibration energy and drive the piston rod 22 back to its initial position (the initial installation position of the piston rod 22 without external force). In one example, the elastic reset member 23 is a spring, which is sleeved on the outer periphery of the piston rod 22.

[0034] In one example, an electromagnet 7 is provided at the bottom of the pressure chamber 211. The electromagnet 7 is spaced apart from the permanent magnet 31. The electromagnet 7 can be an electromagnet. The electromagnet 7 is connected to the energy recovery unit and / or the energy storage unit. The mining truck vibration energy recovery system also includes a control unit (not shown in the figure). The control unit is signal connected to the electromagnet 7, the energy recovery unit and the energy storage unit respectively.

[0035] When external vibration is too great, the control unit can control the energy storage unit and / or energy recovery unit to provide electrical energy to the electromagnet 7, so that the electromagnet 7 generates the same magnetism as the permanent magnet 31, thereby generating a repulsive electromagnetic force to increase the damping and hinder the movement of the piston rod 21, resist external vibration impact, and improve the vibration reduction effect.

[0036] In one example, refer to Figure 2 and Figure 3 The piezoelectric component 4 is connected to the piston rod 22 via an elastic element 5. The elastic element 5 can be a spring. When the piston rod 22 reciprocates, it can buffer some of the external vibration energy through the elastic element 5. At the same time, the piston rod 22 can apply some of the external vibration energy to the piezoelectric component 4 through the elastic element 5 to generate piezoelectricity, thereby recovering some of the vibration energy.

[0037] The control unit is connected to the piezoelectric component 4 and the energy storage unit respectively to control the piezoelectric component 4 to charge the energy storage unit or the energy storage unit to supply power to the piezoelectric component 4.

[0038] When the external vibration impact is within the preset range, the piezoelectric component 4 converts the external vibration energy into electrical energy under the action of the positive piezoelectric effect. At this time, the control unit controls the piezoelectric component 4 and charges the energy storage unit.

[0039] When the external vibration and impact are too great, the control unit can also control the energy storage unit to supply power to the piezoelectric component 4, so that the piezoelectric component 4 can generate reverse deformation under the action of the inverse piezoelectric effect to resist part of the force of the piston rod 22, so that the piezoelectric component 4 and the electromagnet 7 can jointly increase the damping of the vibration reduction unit 2.

[0040] Specifically, the mining truck vibration energy recovery system also includes a vibration sensor, which is used to detect information such as the intensity and frequency of external vibrations. The control unit is connected to the vibration sensor signal and can automatically adjust the damping of the vibration reduction unit according to the detected external vibration information.

[0041] In another example, refer to Figures 4 to 6 The piezoelectric component 4 includes a housing 41 and a piezoelectric element 42 disposed within the housing 41. The piezoelectric element 42 can be made of piezoelectric ceramic, piezoelectric single crystal, etc. The housing 41 is connected to the piston rod 22, and a through hole 411 is provided on the side of the housing 41 facing the piston rod 22. Hydraulic oil can enter and exit the housing 41 through the through hole 411 according to the pressure change in the pressure chamber 211. The piezoelectric component 4 can reciprocate with the piston rod 22, so that hydraulic oil enters and exits the housing 41 through the through hole 411, thereby causing the pressure inside the housing 41 to change continuously. Therefore, the piezoelectric element 42 can generate continuous piezoelectricity when subjected to continuously changing pressure.

[0042] Furthermore, for ease of installation and maintenance, the housing 41 can be detachably installed on the piston rod 22 via fasteners, threaded structures, or snap-fit ​​structures. For example, the housing 41 has an internal threaded hole on its side facing the piston rod 22, and the end of the piston rod 22 has an external thread; the housing 41 is threadedly connected to the piston rod 22.

[0043] The cylinder 21 has a hollow interior and an opening at the end of the cylinder 21 near the outer shell 41. The opening is used to connect the internal threaded hole and the hollow structure. The internal threaded hole is connected to the inside of the outer shell 41. The power transmission wire of the piezoelectric sheet 42 can pass through the hollow structure and connect to the lithium-carbon supercapacitor module 1.

[0044] Specifically, the outer wall of the outer casing 41 is spaced apart from the side wall of the pressure chamber 211 so that hydraulic oil can flow between the outer casing 41 and the pressure chamber 211, resulting in pressure changes both inside and outside the outer casing 41 to generate damping force for vibration reduction.

[0045] In one example, the sidewall of the piston rod 22 and / or the housing 41 is recessed with an annular limiting groove, and the permanent magnet 31 is engaged in the limiting groove to fix the permanent magnet 31.

[0046] In the description herein, it should be understood that the terms "upper," "lower," etc., refer to the orientation or positional relationship shown in the accompanying drawings, and are used only for ease of description and simplification of operation, 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, and therefore should not be construed as a limitation of this disclosure. Furthermore, the terms "first" and "second" are used merely for descriptive distinction and have no special meaning.

[0047] In the description of this specification, references to terms such as "an embodiment," "example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this disclosure. In this specification, illustrative expressions of the above terms do not necessarily refer to the same embodiment or example.

[0048] The technical principles of this disclosure have been described above with reference to specific embodiments. These descriptions are merely for explaining the principles of this disclosure and should not be construed as limiting the scope of protection of this disclosure in any way. Based on this explanation, those skilled in the art can readily conceive of other specific embodiments of this disclosure without inventive effort, and these embodiments will all fall within the scope of protection of this disclosure.

Claims

1. A vibration energy recovery system for mining trucks, characterized in that, Includes an energy storage unit, a vibration damping unit (2), and an energy recovery unit. The energy storage unit includes a lithium-carbon supercapacitor module (1); The vibration damping unit (2) includes a cylinder (21) and a piston rod (22). The cylinder (21) is provided with a pressure chamber (211) filled with hydraulic oil. The end of the piston rod (22) is slidably disposed in the pressure chamber (211). The energy recovery unit includes an electromagnetic component (3) and a piezoelectric component (4). The electromagnetic component includes a permanent magnet (31) and an induction coil (32). The permanent magnet (31) is connected to the piston rod (22) and is located in the pressure chamber (211). The induction coil (32) is located on the side wall of the cylinder (21). The movement of the piston rod (22) can drive the permanent magnet (31) to move relative to the induction coil (32) to cut magnetic field lines and generate electricity. The piezoelectric component (4) is located in the pressure chamber (211) and is used to generate a piezoelectric effect according to changes in external pressure. The piezoelectric component (4) and the induction coil (32) are respectively connected to the lithium-carbon supercapacitor module (1).

2. The mine card vibration energy recovery system according to claim 1, characterized in that, An electromagnet (7) is also provided in the pressure chamber (211). The electromagnet (7) is connected to the energy recovery unit. The mining card vibration energy recovery system also includes a control unit. The control unit is connected to the electromagnet (7) and the energy recovery unit respectively. The control unit can control the energy recovery unit to supply power to the electromagnet (7) so that the electromagnet (7) generates the same magnetism as the permanent magnet (31).

3. The mine card vibration energy recovery system according to claim 1, characterized in that, The piezoelectric component (4) is connected to the piston rod (22) via an elastic element (5), and the piston rod (22) can generate piezoelectricity by acting on the piezoelectric component (4) through the elastic element (5).

4. The mine card vibration energy recovery system according to claim 3, characterized in that, The mining truck vibration energy recovery system also includes a control unit, which is connected to the energy storage unit and the piezoelectric component (4) respectively. The control unit is used to control the piezoelectric component (4) to charge the energy storage unit, or to control the energy storage unit to supply power to the piezoelectric component (4).

5. The mine card vibration energy recovery system according to claim 1, characterized in that, The piezoelectric assembly (4) includes a housing (41) and a piezoelectric sheet (42) disposed in the housing (41). The housing (41) is connected to the piston rod (22). A through hole (411) is provided on the side of the housing (41) facing the piston rod (22). The hydraulic oil can enter and exit the housing (41) through the through hole (411) according to the pressure change in the pressure chamber (211).

6. The mine card vibration energy recovery system according to claim 5, characterized in that, The outer wall of the outer shell (41) is provided with a gap from the side wall of the pressure chamber (211).

7. The mine card vibration energy recovery system according to claim 5, characterized in that, The housing (41) is detachably mounted to the piston rod (22) by means of fasteners, threaded structures, or snap-fit ​​structures.

8. The mine card vibration energy recovery system according to claim 5, characterized in that, The piston rod and / or the side wall of the housing (41) are recessed with an annular limiting groove, and the permanent magnet (31) is engaged in the limiting groove.

9. The mine card vibration energy recovery system according to claim 1, characterized in that, The vibration damping unit (2) also includes an elastic reset member (23), which is connected to the piston rod (22) and is used to drive the piston rod (22) to reset.

10. The mine card vibration energy recovery system according to claim 9, characterized in that, The vibration damping unit (2) includes a mounting base (24) and a vibration damping pad (25) arranged opposite to each other. The mounting base (24) is used to install the energy storage unit, and the vibration damping pad (25) is used to install on the mining truck. The cylinder (21) and the piston rod (22) are disposed between the mounting base (24) and the vibration damping pad (25). The cylinder (21) is connected to the mounting base (24), and one end of the piston rod (22) away from the cylinder (21) is connected to the vibration damping pad (25). The elastic reset member (23) is sleeved on the outer periphery of the piston rod (22) and abuts between the vibration damping pad (25) and the cylinder (21).

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