Noise reduction structure of charging device and charging pile
By setting a noise reduction structure of sound guide plate and sound-absorbing cotton in the vents of the charging pile shell, the noise problem of the charging pile is solved, and the effect of significantly reducing noise is achieved, and production costs and environmental impact are reduced.
Patent Information
- Application Number
- CN202420995241.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-09
- Publication Date
- 2025-02-11
- Estimated Expiration
- 2034-05-09
AI Technical Summary
Existing charging piles produce large noise during charging, traditional cooling fans are noisy and easy to lose, and the effect of using sound insulation barriers alone is not good, making it difficult to achieve the purpose of significantly reducing operating noise.
Design a charging device noise reduction structure, including an outer frame, cover, sound guide plate and sound absorbing cotton. By setting a sound guide plate and sound absorbing cotton in the vent of the charging pile shell, a sound channel is formed and the sound absorbing cotton is used to absorb noise, combined with a guide The tilt design of the soundboard extends the length of the sound channel to increase the sound absorption area.
It realizes effective absorption of charging pile noise, greatly reduces operating noise, reduces the use of required sound insulation materials, reduces production costs, and improves environmental comfort.
Smart Images
Figure CN222451976U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of charging piles, and in particular to a noise reduction structure of a charging device. Background Art
[0002] As new energy vehicle battery technology matures, it will be an inevitable trend for future charging stations to adopt high-current fast-charging facilities. How to solve the noise of charging piles has become a key issue of concern, and the selection of noise reduction solutions is particularly important.
[0003] During the charging process, the charging pile will generate heat inside when working due to the high charging power. Poor heat dissipation will cause increased fan noise. When the shell temperature reaches the critical temperature point, the traditional charging pile uses a heat dissipation fan to increase the air circulation efficiency, which is easy to generate a lot of noise affecting daily life. In addition, the performance of the heat dissipation fan is uneven, easy to wear and easy to age. Some choose to install sound insulation barriers around the charging pile, install the charging pile away from the crowd and other passive noise reduction methods, but the sound absorption performance of the sound-absorbing material is weak, the installation of large barriers is not environmentally friendly, and the economy is poor. Single use cannot achieve the purpose of significantly reducing operating noise. Utility Model Content
[0004] In view of the shortcomings of the prior art, the technical problem to be solved by the utility model is to provide a noise reduction structure for a charging device, which can effectively absorb the noise during the charging process of the charging pile, thereby achieving the purpose of significantly reducing the operating noise.
[0005] In order to achieve the above object, the utility model is implemented through the following technical solutions: a charging device noise reduction structure, comprising:
[0006] An outer frame, the front and rear ends of which are open, is located inside the outer shell of the charging pile, and is framed on the vent of the outer shell of the charging pile;
[0007] A cover plate, which is arranged on the rear end of the outer frame, and the cover plate is provided with first through holes arranged in a row and passing through one another at intervals;
[0008] A sound guide plate, wherein there are a plurality of the sound guide plates, the plurality of the sound guide plates are spaced from top to bottom on the outer frame to form a plurality of sound channels, and each of the sound guide plates is located between two adjacent upper and lower rows of the first through holes, and the ends of the sound guide plates are inclined toward the ground; and
[0009] Sound-absorbing cotton is arranged in the sound channel.
[0010] Furthermore, the thickness of the sound-absorbing cotton is smaller than the height of the sound channel.
[0011] Furthermore, it also includes an auxiliary fixing device, which is arranged in the sound channel and is used to assist in fixing the sound-absorbing cotton.
[0012] Furthermore, the auxiliary fixing device includes a support frame and a baffle, the support frame is arranged in the sound channel and parallel to the sound guide plate, the sound-absorbing cotton is placed on the support frame, and the top surface of the sound-absorbing cotton abuts against the sound guide plate above it, and the baffle is arranged at the end of the support frame and blocks the edge of the sound-absorbing cotton.
[0013] Furthermore, the side wall of the outer frame is provided with a plurality of slots communicating with the inner cavity thereof, and the slots are arranged in a one-to-one correspondence with the sound channels.
[0014] Furthermore, a guide plate is provided on the outer side of the shell and above each of the slots, and the end of the guide plate is inclined toward the ground.
[0015] Furthermore, the sound-absorbing cotton is Eminem green sound-absorbing cotton.
[0016] A charging pile comprises the above-mentioned charging device noise reduction structure, wherein the charging device noise reduction structure is arranged on a vent of a shell of the charging pile.
[0017] Beneficial effects of the utility model:
[0018] When the above-mentioned charging device noise reduction structure is in use, since the entire device is arranged in the charging pile shell, the purpose of close-range, active sound absorption and noise reduction can be achieved. At the same time, there is no need to set up a large barrier. Compared with the traditional noise reduction solution of installing a sound insulation barrier, this solution requires less sound insulation raw materials, which can reduce production costs; at the same time, it can also improve the comfort of the entire external environment.
[0019] In addition, since the noise reduction structure cover is arranged on the vent, when the charging device starts charging, the sound-absorbing cotton can absorb the sound. At the same time, since the sound guide plate is arranged at an angle, the length of the sound channel can be extended, thereby increasing the effective sound absorption area of the sound-absorbing cotton, thereby greatly reducing the charging noise. BRIEF DESCRIPTION OF THE DRAWINGS
[0020] In order to more clearly illustrate the specific implementation of the utility model, the following will briefly introduce the drawings required for use in the specific implementation. In all the drawings, each element or part is not necessarily drawn according to the actual scale.
[0021] Figure 1 A schematic diagram of a noise reduction structure of a charging device provided by an embodiment of the utility model;
[0022] Figure 2 for Figure 1A three-dimensional schematic diagram of a noise reduction structure of a charging device is shown;
[0023] Figure 3 for Figure 1 A view showing an auxiliary fixing device installed on an outer frame in a noise reduction structure of a charging device (the drawing only shows the uppermost auxiliary fixing device);
[0024] Reference numerals:
[0025] 100, outer frame; 200, cover plate; 210, first through hole; 300, sound-absorbing cotton; 400, sound guide plate; 500, auxiliary fixing device; 510, support frame; 520, baffle; 600, guide plate. DETAILED DESCRIPTION
[0026] The following embodiments of the technical solution of the utility model are described in detail in conjunction with the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the utility model, and are therefore only used as examples, and cannot be used to limit the protection scope of the utility model.
[0027] See also Figures 1 to 3 The utility model provides a noise reduction structure for a charging device, including an outer frame 100 , a cover plate 200 , a sound guide plate 400 and sound-absorbing cotton 300 .
[0028] Specifically, the front and rear ends of the outer frame 100 are open, located in the shell of the charging pile, and framed on the vent of the shell of the charging pile. The cover plate 200 is covered on the rear end of the outer frame 100, and the cover plate 200 is provided with first through holes 210 arranged in a row and passing through one after another.
[0029] There are multiple sound guide plates 400, which are arranged at intervals from top to bottom on the outer frame 100 to form multiple sound channels, and each sound guide plate 400 is located between two adjacent upper and lower rows of first through holes 210, and the end of the sound guide plate 400 is inclined toward the ground. The sound absorbing cotton 300 is arranged in the sound channel.
[0030] When in use, since the entire device is set inside the charging pile casing, it can achieve the purpose of close-range, active sound absorption and noise reduction. At the same time, there is no need to set up a large barrier. Compared with the traditional noise reduction solution of installing sound insulation barriers, this solution requires less sound insulation raw materials, which can reduce production costs; at the same time, it can also improve the comfort of the entire external environment.
[0031] In addition, since the noise reduction structure cover is arranged on the vent, when the charging device starts charging, the sound-absorbing cotton 300 can absorb the sound. At the same time, since the sound guide plate 400 is inclined, the length of the sound channel can be extended, thereby increasing the effective sound absorption area of the sound-absorbing cotton 300, thereby achieving the purpose of greatly reducing the charging noise.
[0032] In the specific implementation, the sound-absorbing cotton 300 can be selected from the commonly used ALM green sound-absorbing cotton 300 in the prior art. Experiments have shown that in this charging device noise reduction structure using ALM green sound-absorbing cotton 300, under typical working conditions, the noise reduction of AAL-A1-300 type can reach 13.6dB (A), and the noise reduction of AAL-B1-400 type can reach up to 17.4dB (A); the air flow resistance is low, the pressure loss of AAL-A1-300 type is less than 38pa (6.5m / s wind speed), and the pressure loss of AAL-B1-400 type is less than 45pa (6.5m / s wind speed).
[0033] As a preferred embodiment, the thickness of the sound-absorbing cotton 300 is less than the height of the sound channel. During use, the front, rear, upper and lower surfaces of the sound-absorbing cotton 300 can all absorb sound.
[0034] As a preferred embodiment, the structure further includes an auxiliary fixing device 500 , which is disposed in the sound channel and is used to assist in fixing the sound-absorbing cotton 300 .
[0035] Specifically, the auxiliary fixing device 500 includes a support frame 510 and a baffle 520. The support frame 510 is arranged in the sound channel and is arranged parallel to the sound guide plate 400. The sound-absorbing cotton 300 is placed on the support frame, and the top surface of the sound-absorbing cotton 300 abuts against the sound guide plate 400 above it. The baffle 520 is arranged at the end of the support frame and blocks the edge of the sound-absorbing cotton 300.
[0036] In this way, all the sound-absorbing cotton 300 can be fixed in the frame formed by the sound guide plate 300, the support frame 510 and the baffle 520 before being installed in the charging pile, which can prevent the sound-absorbing cotton 300 from slipping out of the sound channel. When in use, the outer frame 100 can be fixed to the charging pile shell, thereby facilitating the storage and transportation of the noise reduction structure.
[0037] As another preferred embodiment, the side wall of the outer frame 100 is provided with a plurality of slots connected to the inner cavity thereof, and the slots are arranged one-to-one with the sound channels. During use, the slots can dissipate heat and cool down. Furthermore, a left and right guide plate 600 is arranged on the outer side of the shell and above each slot, and the ends of the guide plates 600 are inclined toward the ground, which can speed up the air flow and achieve the purpose of further rapid heat dissipation.
[0038] In addition, the present application also provides a charging pile, including a raised charging device noise reduction structure, and the charging device noise reduction structure is arranged on the ventilation hole of the outer shell of the charging pile.
[0039] The charging pile adopting this charging device noise reduction structure can reduce the noise of a typical air-cooled charging pile by 6-10dB, and the noise of a liquid-cooled charging pile by more than 15dB (national standard ≤65dB). While meeting the requirements of noise reduction, the ventilation rate can be increased to the maximum extent possible. Under normal circumstances, the ventilation rate can reach 245%. At the same time, because it is set inside the charging pile, it can avoid problems such as mildew and performance degradation after drying in contact with water, and effectively reduce the impact of dust on noise reduction and heat dissipation. This improves the noise reduction effect and extends the service life of the charging pile.
[0040] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein by equivalents. These modifications or replacements do not deviate the essence of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present invention, and they should all be included in the scope of the claims and specification of the present invention.
Claims
1. A noise reduction structure for a charging device, characterized in that: include: An outer frame, the front and rear ends of which are open, is located inside the outer shell of the charging pile, and is framed on the vent of the outer shell of the charging pile; A cover plate, which is arranged on the rear end of the outer frame, and the cover plate is provided with first through holes arranged in a row and passing through one another at intervals; A sound guide plate, wherein there are a plurality of the sound guide plates, the plurality of the sound guide plates are spaced from top to bottom on the outer frame to form a plurality of sound channels, and each of the sound guide plates is located between two adjacent upper and lower rows of the first through holes, and the ends of the sound guide plates are inclined toward the ground; and Sound-absorbing cotton is arranged in the sound channel.
2. The noise reduction structure of the charging device according to claim 1, characterized in that: The thickness of the sound-absorbing cotton is smaller than the height of the sound channel.
3. The noise reduction structure of the charging device according to claim 1, characterized in that: It also includes an auxiliary fixing device, which is arranged in the sound channel and is used to assist in fixing the sound-absorbing cotton.
4. The noise reduction structure of the charging device according to claim 3, characterized in that: The auxiliary fixing device includes a support frame and a baffle. The support frame is arranged in the sound channel and parallel to the sound guide plate. The sound-absorbing cotton is placed on the support frame, and the top surface of the sound-absorbing cotton abuts against the sound guide plate above it. The baffle is arranged at the end of the support frame and blocks the edge of the sound-absorbing cotton.
5. The noise reduction structure of the charging device according to claim 1, characterized in that: The side wall of the outer frame is provided with a plurality of slots communicating with the inner cavity thereof, and the slots are arranged in a one-to-one correspondence with the sound channels.
6. The noise reduction structure of the charging device according to claim 5, characterized in that: A guide plate is provided on the outer side of the shell and above each slot, and the end of the guide plate is inclined toward the ground.
7. The noise reduction structure of the charging device according to claim 5, characterized in that: The sound-absorbing cotton is Emine green sound-absorbing cotton.
8. A charging pile, characterized in that: It comprises a charging device noise reduction structure as described in any one of claims 1 to 6, and the charging device noise reduction structure is arranged on the vent of the shell of the charging pile.