Low-noise sound insulation structure of direct-current charging pile

Abstract

The utility model discloses a direct current charging pile low-noise sound insulation structure which comprises a charging pile shell, a heat dissipation air channel is arranged on the charging pile shell, the heat dissipation air channel is a gradually-broadened air channel, in addition, a sound absorption material layer is further fixedly connected to the inner wall of the heat dissipation air channel, and in addition, the sound absorption material layer is fixedly connected to the outer wall of the heat dissipation air channel. A sound absorption cover assembly is slidably connected to the outer wall of the charging pile shell corresponding to the heat dissipation air channel, a honeycomb sound insulation plate is fixedly connected to the position, close to the heat dissipation air channel, in a cover shell of the sound absorption cover assembly, multiple sets of sound blocking plates are fixedly connected to the position, located on the front portion of the honeycomb sound insulation plate, in the cover shell, the multiple sets of sound blocking plates are arranged in a staggered mode, and multiple sets of flow guide blades are further rotationally connected to the end of the cover shell. The utility model relates to the technical field of direct current charging piles, and has the characteristic of excellent noise reduction effect.

Description

TECHNICAL FIELD

[0001] The utility model relates to direct current charging pile technical field, specifically is a direct current charging pile low noise sound insulation structure. BACKGROUND

[0002] With the rapid development of new energy vehicles, direct current charging pile as its important supporting equipment, its performance and user experience are increasingly concerned, however, direct current charging pile in the operation process, the heat dissipation fan and other components can produce greater noise, especially when high power charging, noise problem is more prominent, not only influence the surrounding environment, also can reduce the user's use comfort;

[0003] In the prior art, direct current charging pile usually adopts ordinary heat dissipation air duct and simple sound insulation structure to reduce noise, but the effect is limited, for example, the traditional straight-through type heat dissipation air duct is easy to produce turbulent noise due to high-speed airflow, and ordinary sound-absorbing material can only play a limited absorption effect on noise of specific frequency band, in addition, although part of the charging pile adopts sound insulation cover structure, but often because of unreasonable design leads to low heat dissipation efficiency or poor sound insulation effect, cannot give consideration to heat dissipation performance and noise control. SUMMARY

[0004] In view of the above deficiencies existing in the prior art, the utility model aims at providing a direct current charging pile low noise sound insulation structure with excellent noise reduction effect.

[0005] The utility model discloses the technical scheme adopted for realizing the above-mentioned purpose is: a direct current charging pile low noise sound insulation structure, including the charging pile shell, be equipped with the heat dissipation air duct on the charging pile shell, the heat dissipation fan is fixedly connected with the heat dissipation air duct in the charging pile shell inside corresponding heat dissipation air duct, the heat dissipation air duct adopts the gradually wide air duct, the inner wall of heat dissipation air duct is fixedly connected with the sound-absorbing material layer, the outer wall of charging pile shell is slidably connected with the sound-absorbing cover subassembly corresponding heat dissipation air duct;

[0006] The sound-absorbing cover subassembly includes a cover shell, a honeycomb sound insulation board, a sound barrier, and a flow guide vane. The cover shell is slidably connected to the outer wall of the charging pile. The honeycomb sound insulation board is fixedly connected to the cover shell near the heat dissipation air duct. A plurality of sound barriers are fixedly connected to the front part of the honeycomb sound insulation board in the cover shell. The plurality of sound barriers are arranged alternately. A plurality of flow guide vanes are also rotatably connected to the end of the cover shell.

[0007] In the above technical scheme, the sound-absorbing material layer is made of fireproof polyurethane foam or ceramic fiber layer.

[0008] In the above technical scheme, the outer wall of the charging pile shell is fixedly connected with sliding tables on both sides of the heat dissipation air duct, the sliding tables are each provided with a sliding groove, the top end of the sliding groove is open, the outer wall of the cover is fixedly connected with a sliding bar corresponding to each group of sliding tables, and the sliding bar is slidingly connected in the sliding groove.

[0009] In the above technical scheme, the soundproof plate adopts an S-shaped structure and is arranged obliquely.

[0010] In the above technical scheme, the flow guide blade comprises a flow guide piece and a shaft rod fixedly connected to the middle part of the flow guide piece, and the shaft rod is rotationally connected to the cover.

[0011] In the above technical scheme, the charging pile shell comprises, from outside to inside, an outer aluminum plate, a middle foamed polyurethane layer and an inner sound-absorbing cotton layer.

[0012] In the above technical scheme, the charging pile shell is fixedly connected with a temperature sensor and a control single-chip microcomputer inside, and the temperature sensor and the heat dissipation fan are electrically connected with the control single-chip microcomputer.

[0013] The utility model discloses the beneficial effect:

[0014] 1. through the heat dissipation air duct of gradually wide formula, can gradually increase the cross -sectional area, thereby reduce the airflow velocity, reduce turbulent flow noise, and be equipped with the sound-absorbing material layer in the heat dissipation air duct inner wall, like this through the friction and viscous dissipation of sound wave in the aperture, sound energy is converted into heat energy, realizes the reduction of noise;

[0015] 2. through the setting of honeycomb soundproof board, make sound wave in honeycomb hole multiple reflection and interference, thereby consume sound energy, simultaneously have the characteristics of light weight and high rigidity, can inhibit structural vibration noise, again through the multiple interlaced soundproof board and form the maze type structure to extend sound wave propagation path, through multiple reflection and the effect of sound-absorbing material, attenuate sound energy, finally, the flow guide blade of rotatable can adjust airflow direction, reduce outlet turbulent flow noise. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 It is structure schematic drawing of the utility model;

[0017] Figure 2 It is another angle structure schematic drawing of the utility model;

[0018] Figure 3 It is sound-absorbing cover subassembly separation structure schematic drawing in the utility model;

[0019] Figure 4 It is sectional structure schematic drawing of the utility model;

[0020] Figure 5 It isFigure 4 Figure 2 is a schematic diagram of the details of the middle part.

[0021] In the figure: 100 charging pile shell, 101 heat dissipation air duct, 102 sound absorbing material layer, 103 sliding table, 104 sliding groove, 105 outer aluminum plate, 106 middle foamed polyurethane layer, 107 inner sound absorbing cotton layer, 200 heat dissipation fan, 300 sound absorbing cover assembly, 301 cover shell, 302 honeycomb sound insulation board, 303 sound resistance board, 304 guide vane, 305 sliding bar, 306 guide vane, 307 shaft rod, 401 temperature sensor, 402 control single-chip microcomputer. DETAILED DESCRIPTION

[0022] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the utility model.

[0023] Please refer to Figures 1-5 A low-noise sound insulation structure of a direct-current charging pile, comprising a charging pile shell 100, and a heat dissipation air duct 101 is arranged on the charging pile shell 100, and a heat dissipation fan 200 is fixedly connected to the charging pile shell 100 inside the heat dissipation air duct 101. In the embodiment, the heat dissipation air duct 101 adopts a gradually widened air duct, and a sound absorbing material layer 102 is fixedly connected to the inner wall of the heat dissipation air duct 101. The sound absorbing material layer 102 can adopt a fireproof polyurethane foam layer or a ceramic fiber layer. When the heat dissipation fan 200 works, the gradually widened heat dissipation air duct 101 can gradually increase the cross-sectional area, thereby reducing the airflow speed and reducing turbulent noise. Moreover, the sound absorbing material layer 102 is arranged on the inner wall of the heat dissipation air duct 101. In this way, the sound energy is converted into heat energy through the friction and viscous loss of sound waves in the pores, thereby reducing noise.

[0024] In addition, a sound absorbing cover assembly 300 is slidingly connected to the outer wall of the charging pile shell 100 corresponding to the heat dissipation air duct 101. Specifically, the sound absorbing cover assembly 300 comprises a cover shell 301, a honeycomb sound insulation board 302, a sound resistance board 303 and a guide vane 304. First, sliding tables 103 are fixedly connected to the outer wall of the charging pile shell 100 on both sides of the heat dissipation air duct 101, and sliding grooves 104 are arranged on the sliding tables 103. The top end of the sliding groove 104 is open. Sliding bars 305 are fixedly connected to the outer wall of the cover shell 301 corresponding to each group of sliding tables 103, and the sliding bars 305 are slidingly connected in the sliding grooves 104. In this way, the sliding installation of the sound absorbing cover assembly 300 is realized, so as to facilitate the cleaning and replacement of the sound absorbing cover assembly 300.

[0025] The honeycomb sound insulation board 302 is fixedly connected in the shell 301 close to the heat dissipation air duct 101, so that sound waves are reflected and interfered in the honeycomb holes for multiple times, thereby consuming sound energy, and meanwhile, the honeycomb sound insulation board 302 has the characteristics of light weight and high rigidity, and can inhibit structural vibration noise;

[0026] The plurality of groups of sound resistance plates 303 are fixedly connected in the shell 301 in front of the honeycomb sound insulation board 302, and the plurality of groups of sound resistance plates 303 are staggered, so that the plurality of groups of staggered sound resistance plates 303 form a labyrinth structure, extend a sound wave propagation path, attenuate sound energy through multiple reflections and the action of sound absorption materials, and extend the sound wave reflection path through the inclined arrangement, and in addition, the sound resistance plates 303 have an S-shaped structure and are arranged obliquely, so that the oblique arrangement can extend the sound wave reflection path and avoid airflow obstruction at the same time.

[0027] Further, a plurality of groups of guide vanes 304 are rotatably connected to the end of the shell 301, that is, the guide vanes 304 include guide blades 306 and shaft rods 307 fixedly connected to the middle of the guide blades 306, and the shaft rods 307 are rotatably connected to the shell 301, so that when wind blows to the guide vanes 304, the guide vanes can rotate, thereby avoiding direct impact of the wind on the guide vanes 304, which causes outlet turbulent noise.

[0028] Still further, the charging pile shell 100 includes an outer aluminum plate 105, an intermediate foamed polyurethane layer 106 and an inner sound absorption cotton layer 107 fixedly connected from outside to inside, so that the charging pile shell 100 also has a strong sound insulation effect, thereby processing the noise generated by the internal power components.

[0029] Still further, a temperature sensor 401 and a control single-chip microcomputer 402 are fixedly connected in the charging pile shell 100, and the temperature sensor 401 and the heat dissipation fan 200 are electrically connected to the control single-chip microcomputer 402, so that the temperature sensor 401 is used to detect the internal temperature of the charging pile in real time, and then the control single-chip microcomputer 402 controls the rotating speed of the heat dissipation fan 200 according to the temperature, thereby avoiding noise peaks generated by full-speed operation.

[0030] It is obvious to those skilled in the art that the present application is not limited to the details of the above exemplary embodiments, and can be implemented in other specific forms without departing from the spirit or essential characteristics of the present application. Therefore, the embodiments should be regarded as exemplary and non-limiting, and the scope of the present application is defined by the appended claims rather than the above description, and therefore all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the present application. Any reference signs in the claims should not be regarded as limiting the claims involved.

[0031] Furthermore, it should be understood that although the specification is described in terms of embodiments, not every embodiment includes every feature or implementation described herein. The specification can include implicit combinations of explicitly mentioned features and / or implicit combinations of implicitly mentioned features. Such combinations are also expressly included within the scope of the specification and an embodiment.

Claims

1. A low-noise sound insulation structure of a direct-current charging pile, comprising a charging pile shell (100), wherein a heat dissipation air duct (101) is arranged on the charging pile shell (100), and a heat dissipation fan (200) is fixedly connected to the charging pile shell (100) corresponding to the heat dissipation air duct (101), characterized in that: The heat dissipation air duct (101) adopts a gradually wide air duct, a sound absorbing material layer (102) is fixedly connected to the inner wall of the heat dissipation air duct (101), and a sound absorbing cover assembly (300) is slidably connected to the outer wall of the charging pile shell (100) corresponding to the heat dissipation air duct (101). ​ The sound absorbing cover assembly (300) comprises a cover shell (301), a honeycomb sound insulation board (302), a sound resistance board (303), and a guide vane (304). The cover shell (301) is slidably connected to the outer wall of the charging pile shell. The honeycomb sound insulation board (302) is fixedly connected to the inner wall of the cover shell (301) and close to the heat dissipation air duct (101). A plurality of sound resistance boards (303) are fixedly connected to the front of the honeycomb sound insulation board (302) in the cover shell (301). The plurality of sound resistance boards (303) are arranged alternately. A plurality of guide vanes (304) are rotatably connected to the end of the cover shell (301).

2. The low-noise sound insulation structure of a direct-current charging pile according to claim 1, characterized in that: The sound absorbing material layer (102) adopts a fireproof polyurethane foam layer or a ceramic fiber layer.

3. The low-noise sound insulation structure of a direct-current charging pile according to claim 1, characterized in that: A sliding table (103) is fixedly connected to the outer wall of the charging pile shell (100) on both sides of the heat dissipation air duct (101). A sliding groove (104) is arranged on the sliding table (103). The top end of the sliding groove (104) is open. A sliding bar (305) is fixedly connected to the outer wall of the cover shell (301) corresponding to each sliding table (103). The sliding bar (305) is slidably connected in the sliding groove (104).

4. The low-noise sound insulation structure of a direct-current charging pile according to claim 1, characterized in that: The sound resistance board (303) adopts an S-shaped structure and is arranged obliquely.

5. The low-noise sound insulation structure of a direct-current charging pile according to claim 1, characterized in that: The guide vane (304) comprises a guide vane (306) and a shaft (307) fixedly connected to the middle part of the guide vane (306). The shaft (307) is rotatably connected to the cover shell (301).

6. The low-noise sound insulation structure of a direct-current charging pile according to claim 1, characterized in that: The charging pile shell (100) comprises an outer aluminum plate (105), a middle foamed polyurethane layer (106), and an inner sound absorbing cotton layer (107) fixedly connected from outside to inside.

7. The low-noise sound insulation structure of a direct-current charging pile according to claim 1, characterized in that: A temperature sensor (401) and a control single-chip microcomputer (402) are fixedly connected inside the charging pile shell (100). The temperature sensor (401) and the heat dissipation fan (200) are electrically connected to the control single-chip microcomputer (402).

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