Charging pile
By setting up a vibration absorber system in the charging pile, the shape memory spring and heater are used to adjust the stiffness to achieve resonance with the vibration source, solving the vibration and noise problems of the charging pile, and achieving vibration and noise reduction effect.
Patent Information
- Application Number
- CN202422902636.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-27
- Publication Date
- 2025-08-22
- Estimated Expiration
- 2034-11-27
AI Technical Summary
During use, the charging pile shortens its service life and generates noise due to mechanical vibration and impact, affecting the user experience.
A vibration absorber system is adopted, including a housing, shape memory spring, mass and heater. By adjusting the temperature of the shape memory spring, it changes its stiffness, so that the vibration absorber resonates with the vibration source to absorb vibration energy and reduce mechanical vibration and noise.
Effectively reduce mechanical vibration and noise of charging piles, extend service life, and improve user experience.
Smart Images
Figure CN223257417U_ABST
Abstract
Description
Technical Field
[0001] The present application relates to the technical field of shock absorbers, and in particular to a charging pile. Background Art
[0002] Charging piles are crucial supporting facilities in the field of electric vehicle charging equipment, and their design significantly impacts the user experience. In particular, mechanical vibration and impact can significantly impact the service life of charging piles during use. These piles also generate noticeable noise, significantly impacting both the user experience and the surrounding environment. Consequently, developing charging piles that reduce vibration and noise has become a key focus in the current field of charging equipment technology. Utility Model Content
[0003] The present application discloses a charging pile, which can achieve the effects of reducing vibration and noise.
[0004] To achieve the above objectives, this application provides the following technical solutions:
[0005] The present application provides a charging pile, comprising a box, a vibration source and a vibration absorber; the vibration source is arranged on the inner wall of the box, and the vibration absorber is fixedly connected to the vibration source;
[0006] The vibration absorber includes a shell, multiple groups of shape memory springs, multiple mass blocks and a heater; the multiple groups of shape memory springs, the multiple mass blocks and the heater are all arranged inside the shell;
[0007] The multiple groups of shape memory springs and the multiple mass blocks are alternately arranged in sequence along a first direction and connected to each other; each group of shape memory springs includes a plurality of spring members, the plurality of spring members are arranged in parallel along a second direction, and the axis direction of the spring members is parallel to the first direction; wherein the first direction and the second direction are perpendicular; the multiple mass blocks are slidably connected to the housing along the first direction;
[0008] The heater is connected to the multiple groups of shape memory springs and is used to adjust the temperature of each group of shape memory springs to change the comprehensive stiffness of the multiple groups of shape memory springs.
[0009] The charging pile includes a housing, a vibration source, and a vibration absorber. Both the vibration source and the vibration absorber are located within the housing, with the vibration source located on the inner wall of the housing. The vibration absorber is fixedly connected to the vibration source. The vibration absorber absorbs the vibration energy of the vibration source, reducing the mechanical vibration of the charging pile and thereby reducing the noise generated by the charging pile. Specifically, the vibration absorber includes a housing, multiple sets of shape memory springs, multiple masses, and a heater. The multiple sets of shape memory springs, multiple masses, and heater are all located within the housing. The multiple sets of shape memory springs and the multiple masses are alternately arranged and interconnected along a first direction. Together, they reduce the vibration amplitude of the vibration absorber and improve its stability. Each set of shape memory springs includes multiple spring members, which are arranged in parallel along a second direction. The axes of the spring members are parallel to the first direction, with the first and second directions being perpendicular. By adjusting the spacing between the spring members within each set of shape memory springs, a more ideal resonance effect can be achieved. The multiple masses are slidably connected to the housing along the first direction. That is, the masses can move along the first direction with the shape memory springs to achieve resonance between the vibration absorber and the vibration source. The heater is connected to multiple groups of shape memory springs. When the vibration frequency of the vibration source changes, the temperature of each group of shape memory springs can be adjusted by the heater to change the comprehensive stiffness of the multiple groups of shape memory springs, so that the vibration frequency of the vibration absorber is equal to the vibration frequency of the vibration source again, realizing the resonance of the vibration absorber and the vibration source, and achieving the purpose of vibration reduction and noise reduction.
[0010] In some embodiments, in a natural state, the shape memory spring abuts against the housing.
[0011] In some embodiments, the shape memory spring is in contact connection with the housing.
[0012] In some embodiments, the shape memory spring is fixedly connected to the housing.
[0013] In some embodiments, the first and second surfaces of each of the mass blocks are provided with a plurality of grooves, and the plurality of grooves are arranged at intervals along the second direction for accommodating the spring member to limit the spring member; wherein the first surface and the second surface are two opposite surfaces of the mass block perpendicular to the first direction.
[0014] In some embodiments, the vibration absorber further comprises a cable, one end of the cable is connected to the heater, and the other end of the cable is respectively connected to each spring member in each group of shape memory springs.
[0015] In some embodiments, the vibration absorber further includes a limit block, which is provided on the inner wall of the shell and is used to limit the movement of the mass block along the second direction, and the mass block is slidably connected to the limit block along the first direction.
[0016] In some embodiments, there are two limit blocks, and the two limit blocks are arranged at two ends of the mass block along the second direction.
[0017] In some embodiments, the charging pile also includes a controller, which is arranged on the inner wall of the box. The controller is signal-connected to the vibration source and the heater. The controller is used to control the heater to adjust the temperature of each group of shape memory springs according to the vibration frequency of the vibration source to change the comprehensive stiffness of the multiple groups of shape memory springs.
[0018] In some embodiments, the vibration source includes one of a cooling fan or a pump. BRIEF DESCRIPTION OF THE DRAWINGS
[0019] Figure 1 A schematic diagram of the structure of a charging pile provided in an embodiment of the present application;
[0020] Figure 2 A schematic structural diagram of a vibration absorber provided in an embodiment of the present application;
[0021] Figure 3 A flow chart of a charging pile control method provided in an embodiment of the present application;
[0022] Icons: 1. Box; 2. Vibration source; 3. Vibration absorber; 31. Shell; 311. Bottom plate; 32. Shape memory spring; 321. Spring member; 33. Mass block; 331. Groove; 34. Heater; 35. Cable; 36. Limit block; 4. Controller; A. First side; B. Second side. DETAILED DESCRIPTION
[0023] The following will clearly and completely describe the technical solutions in the embodiments of the present application in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of this application. Among them, in the description of the embodiments of the present application, unless otherwise specified, " / " means or, for example, A / B can mean A or B; "and / or" in the text is only a description of the association relationship of associated objects, indicating that there can be three relationships, for example, A and / or B can mean: A exists alone, A and B exist at the same time, and B exists alone. In addition, in the description of the embodiments of the present application, "multiple" refers to two or more than two.
[0024] The terms "first" and "second" are used for descriptive purposes only and should not be understood to imply or suggest relative importance or implicitly indicate the number of technical features indicated. Therefore, features defined as "first" or "second" may explicitly or implicitly include one or more of such features. In the description of the embodiments of this application, unless otherwise specified, "plurality" means two or more.
[0025] like Figure 1 and Figure 2 As shown, the embodiment of the present application provides a charging pile, including a box 1, a vibration source 2 and a vibration absorber 3; the vibration source 2 is arranged on the inner wall of the box, and the vibration absorber 3 is fixedly connected to the vibration source 3;
[0026] The vibration absorber 3 includes a housing 31, multiple groups of shape memory springs 32, multiple mass blocks 33 and a heater 34; the multiple groups of shape memory springs 32, multiple mass blocks 33 and the heater 34 are all arranged inside the housing 31;
[0027] Multiple groups of shape memory springs 32 and multiple masses 33 are alternately arranged in sequence along a first direction and interconnected. Each group of shape memory springs 32 includes multiple spring members 321, which are arranged in parallel along a second direction. The axis direction of the spring members 321 is parallel to the first direction. The first direction is perpendicular to the second direction. The multiple masses 33 are slidably connected to the housing 31 along the first direction.
[0028] The heater 34 is connected to the multiple groups of shape memory springs 32 and is used to adjust the temperature of each group of shape memory springs 32 to change the comprehensive stiffness of the multiple groups of shape memory springs 32 .
[0029] The above-mentioned charging pile includes a housing 1, a vibration source 2 and a vibration absorber 3. The vibration source 2 and the vibration absorber 3 are both arranged inside the housing 1, the vibration source 2 is arranged on the inner wall of the housing 1, and the vibration absorber 3 is fixedly connected to the vibration source 2. The vibration absorber 3 is used to absorb the vibration energy of the vibration source 2, reduce the mechanical vibration of the charging pile, and thus reduce the noise generated by the charging pile. Specifically, the vibration absorber 3 includes a shell 31, multiple groups of shape memory springs 32, multiple masses 33 and a heater 34. The multiple groups of shape memory springs 32, the multiple masses 33 and the heater 34 are all arranged inside the shell 31. The multiple groups of shape memory springs 32 and the multiple masses 33 are alternately arranged in sequence along the first direction and connected to each other. The two can cooperate to reduce the amplitude of the vibration absorber 3 and improve the stability of the vibration absorber 3. Each group of shape memory springs 32 includes multiple spring members 321, and the multiple spring members 321 are arranged in parallel along the second direction. The axial direction of the spring members 321 is parallel to the first direction, wherein the first direction and the second direction are perpendicular. By adjusting the spacing between the spring elements 321 in each set of shape memory springs 32, a more ideal resonance effect can be achieved. Multiple mass blocks 33 are slidably connected to the housing 31 along a first direction. Specifically, the mass blocks 33 can move along the first direction with the shape memory springs 32 to achieve resonance between the vibration absorber 3 and the vibration source 2. A heater 34 is connected to the multiple sets of shape memory springs 32. When the vibration frequency of the vibration source 2 changes, the heater 34 can adjust the temperature of each set of shape memory springs 32 to change the combined stiffness of the multiple sets of shape memory springs 32, thereby restoring the vibration frequency of the vibration absorber 3 to that of the vibration source 2. This allows resonance between the vibration absorber 3 and the vibration source 2 to be achieved, thereby reducing vibration and noise.
[0030] One possible implementation method is Figure 1 and Figure 2 As shown, the housing 31 of the vibration absorber 3 includes a bottom plate 311, and the bottom plate 311 is fixedly connected to the vibration source 2. Figure 2 As shown, the vibration absorber 3 includes three groups of shape memory springs 32 and two mass blocks 33. The shape memory springs 32 and the mass blocks 33 are arranged along a first direction ( Figure 2 Each group of shape memory springs 32 includes four spring members 321, and the spring members 321 are arranged in an alternating manner along the second direction ( Figure 2 The axis of the spring member 321 is parallel to the first direction ( Figure 2 The mass block 33 and the housing 31 are parallel to the first direction ( Figure 2 The mass block 33 can slide along the X direction (shown in FIG). That is, the mass block 33 can slide along the X direction (shown in FIG). Figure 2 The vibration absorber 3 and the vibration source 2 vibrate in the X direction as shown in FIG.
[0031] It should be noted that the natural vibration frequency of vibration absorber 3 in its initial state is the same as the natural vibration frequency of vibration source 2 in its initial state. The vibration absorber 3 resonates with the vibration source 2, achieving the desired vibration and noise reduction effects. When the vibration frequency of vibration source 2 changes, the temperature of each set of shape memory springs 32 can be adjusted by heater 34 to change the combined stiffness of the multiple sets of shape memory springs 32. This allows the vibration frequency of vibration absorber 3 to once again equalize with the vibration frequency of vibration source 2, achieving resonance between the vibration absorber 3 and vibration source 2 and achieving the desired vibration and noise reduction effects.
[0032] It should be noted that the amplitude of the vibration source 2 can be obtained by the following formula:
[0033]
[0034] Where A1 is the amplitude of the vibration source, k1 is the stiffness of the vibration source, k2 is the stiffness of the vibration absorber spring, m1 is the mass of the vibration source, m2 is the mass of the vibration absorber mass block, ω is the exciting force frequency, F0 is the maximum exciting force, and F0 sinωt is the exciting force.
[0035] remember Simplifying the formula, we can get:
[0036]
[0037] When the excitation force frequency ω approaches the natural frequency ω1 of the vibration source, the amplitude A1 of the vibration source is 0, that is, the vibration of the vibration source disappears.
[0038] In some embodiments, in a natural state, the shape memory spring 32 abuts against the housing 31 .
[0039] One possible implementation method is Figure 2 As shown, the housing 31 and the bottom plate 311 slightly compress the shape memory spring 32. That is, the shape memory spring 32 has an initial preload force to fix the position of the shape memory spring 32 and prevent the shape memory spring 32 from rigid displacement.
[0040] In some embodiments, the shape memory spring 32 is in contact with the housing 31 .
[0041] One possible implementation method is Figure 2 As shown, the shape memory spring 32 and the housing 31 can be in contact connection, and at the same time, the housing 31 and the bottom plate 311 slightly compress the shape memory spring 32 to prevent the shape memory spring 32 from rigid displacement.
[0042] In some embodiments, the shape memory spring 32 is fixedly connected to the housing 31 .
[0043] Another possible implementation method is Figure 2As shown, in order to better fix the position of the shape memory spring 32, the shape memory spring 32 and the shell 31 can also be fixedly connected, and the shell 31 and the bottom plate 311 slightly compress the shape memory spring 32 to better prevent the shape memory spring 32 from rigid displacement.
[0044] In some embodiments, the first surface A and the second surface B of each mass block 33 are provided with multiple grooves 331, and the multiple grooves 331 are arranged at intervals along the second direction to accommodate the spring member 321 to limit the spring member 321; wherein the first surface A and the second surface B are two opposite surfaces of the mass block 33 perpendicular to the first direction.
[0045] One possible implementation method is Figure 2 As shown, each set of shape memory springs 32 includes four spring members 321, and each mass block 33 has four grooves 331 on the first surface A and the second surface B. The shape memory springs 32 and the mass block 33 are arranged along the first direction ( Figure 2 When the spring member 321 is fixedly connected in the X direction (shown in FIG), the positions of the spring member 321 and the groove 331 correspond one to one, thereby limiting the spring member 321 and improving the stability of the vibration absorber 3 during vibration. The shape of the groove 331 can be cylindrical and adapted to the spring member 321.
[0046] In some embodiments, the vibration absorber 3 further includes a cable 35 , one end of which is connected to the heater 34 , and the other end of which is connected to each spring member 321 in each group of shape memory springs 32 .
[0047] One possible implementation method is Figure 2 As shown, one end of the cable 35 is connected to the heater 34, and the other end is connected to each of the four spring elements 321 in each set of shape memory springs 32. When the vibration frequency of the vibration source 2 changes, the heater 34 adjusts the temperature of the spring elements 321 in each set of shape memory springs 32 via the cable 35, thereby changing the combined stiffness of the multiple sets of shape memory springs 32, restoring the vibration frequency of the vibration absorber 3 to that of the vibration source 2. This resonates between the vibration absorber 3 and the vibration source 2, achieving vibration and noise reduction.
[0048] For example, when the vibration frequency of vibration source 2 changes from an initial vibration frequency to a first vibration frequency, which is greater than the initial vibration frequency, heater 34 can heat one set of shape memory springs 32 in vibration absorber 3 to change the combined stiffness of the multiple sets of shape memory springs 32, causing the vibration frequency of vibration absorber 3 to once again equal the vibration frequency of vibration source 2, thereby generating a reaction force and reducing the vibration energy of vibration source 2, thereby achieving noise reduction. When the vibration frequency of vibration source 2 continues to change from the first vibration frequency to a second vibration frequency, which is greater than the first vibration frequency, heater 34 can heat another set of shape memory springs 32 in vibration absorber 3 to once again change the combined stiffness of the multiple sets of shape memory springs 32, causing the vibration frequency of vibration absorber 3 to once again equal the vibration frequency of vibration source 2. When the vibration frequency of vibration source 2 continues to change from the second vibration frequency to the third vibration frequency, the third vibration frequency is less than the initial vibration frequency. The heater 34 can stop heating one set of shape memory springs 32 in the vibration absorber 3, causing the set of shape memory springs 32 to return to their original inherent elastic modulus. This further changes the combined stiffness of the multiple sets of shape memory springs 32, causing the vibration frequency of vibration absorber 3 to once again equal the vibration frequency of vibration source 2. When the vibration frequency of vibration source 2 continues to change from the third vibration frequency to the fourth vibration frequency, the fourth vibration frequency is less than the third vibration frequency. The heater 34 can stop heating another set of shape memory springs 32 in the vibration absorber 3, causing this set of shape memory springs 32 to also return to its original inherent elastic modulus. This further changes the combined stiffness of the multiple sets of shape memory springs 32, causing the vibration frequency of vibration absorber 3 to once again equal the vibration frequency of vibration source 2. The vibration absorber 3 of the present embodiment can absorb the vibration energy of vibration source 2 at different vibration frequencies, thereby achieving the purpose of vibration reduction and noise reduction.
[0049] It should be noted that when the vibration frequency of heater 34 increases, heating can be performed on one or more sets of shape memory springs 32. When the vibration frequency of heater 34 decreases, heating can be stopped on one or more sets of shape memory springs 32. The temperature of each set of shape memory springs 32 is adjusted by heater 34 to ultimately equalize the vibration frequency of vibration absorber 3 to that of vibration source 2.
[0050] In some embodiments, the vibration absorber 3 further includes a limit block 36 , which is disposed on the inner wall of the shell 31 and is used to limit the movement of the mass block 33 along the second direction. The mass block 33 is slidably connected to the limit block 36 along the first direction.
[0051] One possible implementation method is Figure 2 As shown, by setting the limit block 36, the mass block 33 can be limited to prevent the mass block 33 from moving along the second direction ( Figure 2) to ensure that the mass block 33 can only move in the first direction ( Figure 2 The vibration absorber 3 slides in the X direction (as shown in FIG), thereby improving the stability of the vibration absorber 3 during the vibration process.
[0052] In some embodiments, there are two limit blocks 36 , which are disposed at two ends of the mass block 33 along the second direction.
[0053] One possible implementation method is Figure 2 As shown, the vibration absorber 3 includes two limit blocks 36, which are arranged on the inner wall of the shell 31 and are located at the position where the mass block 33 moves along the second direction ( Figure 2 The sum of the thickness of the two limit blocks 36 along the second direction and the length of the mass block 33 along the second direction is equal to the dimension of the inner wall of the housing 31 along the second direction, thereby limiting the movement of the mass block 33 along the second direction.
[0054] In some embodiments, the charging pile also includes a controller 4, which is arranged on the inner wall of the box 1. The controller 4 is signal-connected to the vibration source 2 and the heater 34. The controller 4 is used to control the heater 34 to adjust the temperature of each group of shape memory springs 32 according to the vibration frequency of the vibration source 2 to change the comprehensive stiffness of multiple groups of shape memory springs 32, so that the vibration frequency of the vibration absorber 3 is equal to the vibration frequency of the vibration source 2, thereby realizing the resonance of the vibration absorber 3 and the vibration source 2, and achieving the purpose of vibration reduction and noise reduction.
[0055] In some embodiments, the vibration source 2 includes a cooling fan or a pump.
[0056] One possible implementation method is Figure 2 As shown, the charging pile also includes a grounding wire for transmitting feedback signals. The embodiment of the present application adopts an FG (Feedback Ground) wire, one end of the FG wire is connected to the vibration source 2, and the other end is connected to the controller 4. The FG wire is used to transmit the operating parameters of the vibration source 2 to the controller 4. The controller 4 receives the operating parameter signal and controls the heater 34 to adjust the temperature of each group of shape memory springs 32 to change the comprehensive stiffness of multiple groups of shape memory springs 32, so that the vibration frequency of the vibration absorber 3 is equal to the vibration frequency of the vibration source 2, and the resonance of the vibration absorber 3 and the vibration source 2 is achieved, so as to achieve the purpose of vibration reduction and noise reduction. When the vibration source 2 is a cooling fan, the operating parameter is the fan speed. When the vibration source 2 is a pump, the operating parameter is the acceleration of the pump vibration, and different accelerations correspond to different power usage of the pump.
[0057] In order to make the solution provided by the embodiment of the present application easier to understand, the control method for vibration reduction and noise reduction of the charging pile is described in detail below through a specific embodiment. Figure 3 As shown, the process includes the following steps:
[0058] S301, the vibration source operates with initial operating parameters;
[0059] S302, FG line transmits the operating parameters of the vibration source to the controller;
[0060] S303, the controller determines whether the operating parameters are equal to the initial operating parameters, if so, executes S304; if not, executes S301;
[0061] S304: The controller controls the heater to adjust the temperature of the shape memory spring so that the vibration frequency of the vibration absorber is equal to the vibration frequency of the vibration source, and executes S302.
[0062] In S304 above, when the operating parameters of the vibration source exceed the initial operating parameters, the controller controls the heater to increase the temperature of one set of shape memory springs. As the operating parameters continue to increase, the controller controls the heater to increase the temperature of another set of shape memory springs to equalize the vibration frequency of the vibration absorber. Furthermore, if the operating parameters decrease, the controller controls the heater to stop heating one set of shape memory springs. As the operating parameters continue to decrease, the controller controls the heater to stop heating the other set of shape memory springs to equalize the vibration frequency of the vibration absorber to the vibration frequency of the vibration source.
[0063] The charging pile in the embodiment of the present application can autonomously adjust its vibration frequency to achieve resonance with the vibration source, reducing the vibration energy generated within the charging pile and achieving vibration and noise reduction. Furthermore, springs and masses of varying stiffness can be combined to accommodate different vibration sources, providing high adaptability. Furthermore, the vibration absorber takes up little space, is simple and convenient to assemble and maintain, and does not affect the heat dissipation efficiency of the charging pile.
[0064] Obviously, those skilled in the art may make various changes and modifications to this application without departing from the spirit and scope of this application. Thus, if these modifications and variations of this application fall within the scope of the claims of this application and their equivalents, this application is intended to include these modifications and variations.
Claims
1. A charging pile, characterized in that: It includes a box, a vibration source and a vibration absorber; the vibration source is arranged on the inner wall of the box, and the vibration absorber is fixedly connected to the vibration source; The vibration absorber includes a shell, multiple groups of shape memory springs, multiple mass blocks and a heater; the multiple groups of shape memory springs, the multiple mass blocks and the heater are all arranged inside the shell; The multiple groups of shape memory springs and the multiple mass blocks are alternately arranged in sequence along a first direction and connected to each other; each group of shape memory springs includes a plurality of spring members, the plurality of spring members are arranged in parallel along a second direction, and the axis direction of the spring members is parallel to the first direction; wherein the first direction and the second direction are perpendicular; the multiple mass blocks are slidably connected to the housing along the first direction; The heater is connected to the multiple groups of shape memory springs and is used to adjust the temperature of each group of shape memory springs to change the comprehensive stiffness of the multiple groups of shape memory springs.
2. The charging pile according to claim 1, characterized in that: In a natural state, the shape memory spring abuts against the housing.
3. The charging pile according to claim 2, characterized in that: The shape memory spring is in contact connection with the housing.
4. The charging pile according to claim 2, characterized in that: The shape memory spring is fixedly connected to the housing.
5. The charging pile according to claim 1, characterized in that: The first and second surfaces of each mass block are provided with a plurality of grooves, and the plurality of grooves are arranged at intervals along the second direction for accommodating the spring member to limit the spring member; wherein the first surface and the second surface are two opposite surfaces of the mass block perpendicular to the first direction.
6. The charging pile according to claim 1, characterized in that: The vibration absorber further includes a cable, one end of which is connected to the heater, and the other end of which is respectively connected to each spring member in each group of shape memory springs.
7. The charging pile according to claim 1, characterized in that: The vibration absorber further includes a limit block, which is arranged on the inner wall of the shell and is used to limit the movement of the mass block along the second direction. The mass block is slidably connected to the limit block along the first direction.
8. The charging pile according to claim 7, characterized in that: There are two limit blocks, and the two limit blocks are arranged at two ends of the mass block along the second direction.
9. The charging pile according to claim 1, characterized in that: The charging pile also includes a controller, which is arranged on the inner wall of the box. The controller is signal-connected to the vibration source and the heater. The controller is used to control the heater to adjust the temperature of each group of shape memory springs according to the vibration frequency of the vibration source to change the comprehensive stiffness of the multiple groups of shape memory springs.
10. The charging pile according to claim 9, characterized in that: The vibration source includes one of a cooling fan or a pump.