Noise reduction structure of direct current charging pile

Abstract

The utility model discloses a noise reduction structure of a direct current charging pile, and relates to the technical field of direct current charging piles. Comprising a box body, and a shell is arranged on the outer side of an opening of the box body; the noise reduction layer is arranged on the inner wall of the box body; the noise reduction assembly is located on the inner side of the air inlet net opening; and the heat dissipation assembly is located above the noise reduction assembly. According to the noise reduction structure of the direct-current charging pile, the noise reduction layer is arranged on the inner wall of the box body, the noise reduction assembly is arranged in the air inlet net opening, a vibration stopping pad on the noise reduction layer is matched with the sound insulation layer to achieve the good sound insulation effect, a groove in the sound insulation layer is filled with sound absorption cotton, a part of noise can be absorbed, and the noise reduction effect is further improved; a sound absorption plate and a sound insulation plate on the noise reduction assembly are matched to achieve a good noise reduction effect, and ventilation and heat dissipation of the heat dissipation mechanism are not affected by air guide holes in the washboard and ventilation holes in the sound insulation plate.

Description

Technical Field

[0001] The utility model relates to the technical field of direct current charging piles, in particular to a noise reduction structure of a direct current charging pile. Background Art

[0002] When the charging pile is charging, the internal electrical appliances pass through a large current and the temperature of the device is high, so a fan is needed for air cooling and heat dissipation. The fan makes a lot of noise when it is running. The existing charging pile noise reduction device generally uses sound insulation material to wrap the charging pile, which is inconvenient to use and is not conducive to the heat dissipation of the fan. The tighter the sound insulation material is wrapped, the better the noise reduction effect of the device, but its air cooling and heat dissipation effect is poor.

[0003] The utility model with publication number CN 217197808 U discloses a noise reduction charging pile, which includes: a shell, at least one air inlet and a plurality of air outlets are opened on the wall of the shell; a charging module arranged in the shell; an air outlet module fixed on the shell and corresponding to the air outlet one by one, the air outlet module includes a heat dissipation fan for dissipating heat from the charging module and an air outlet hood connected to the heat dissipation fan, the air outlet hood, the heat dissipation fan and the shell are surrounded to form an air outlet channel, the air outlet is located at one end of the air outlet channel, and the heat dissipation fan is located at the other end of the air outlet channel.

[0004] The above device arranges an air inlet and multiple air outlets on the shell, and arranges an air outlet module on the air outlet, so that the noise generated by the noise reduction charging pile must be reflected multiple times in the shell before it can be transmitted to the outside of the shell, thereby effectively reducing the volume of the noise. However, it does not have a noise reduction mechanism at the air outlet of the cooling fan, so that the noise will be transmitted from the air outlet, and a good noise reduction effect cannot be achieved. Utility Model Content

[0005] In view of the deficiencies in the prior art, the utility model provides a noise reduction structure for a DC charging pile, which solves the existing problems.

[0006] To achieve the above objectives, the utility model is implemented through the following technical solutions: a noise reduction structure of a DC charging pile, comprising:

[0007] A box body, an outer shell is arranged outside the opening of the box body, the outer shell is connected to the box body by bolts, an air inlet mesh port is opened at the bottom of the box body, limit plates are arranged on both sides of the outer side of the air inlet mesh port, and a filter screen plate is arranged between the two limit plates;

[0008] A noise reduction layer, which is arranged on the inner wall of the box and is used to reduce the noise of the components in the box;

[0009] A noise reduction component, which is located on the inner side of the air inlet mesh and is used to reduce the noise of the heat dissipation mechanism;

[0010] The heat dissipation component is located above the noise reduction component and is used for dissipating heat inside the box.

[0011] Preferably, the noise reduction layer includes a vibration-absorbing pad bonded to the inner wall of the box body, a sound insulation layer is bonded to the inner side of the vibration-absorbing pad, a plurality of grooves distributed in a rectangular array are opened on the inner side of the sound insulation layer, the interior of the grooves is filled with sound-absorbing cotton, and a through hole is opened in the middle of the bottom of the groove.

[0012] Preferably, the noise reduction component includes a sound absorbing panel and a sound insulating panel arranged in the inner groove of the air inlet mesh, and the sound absorbing panel is located above the sound insulating panel.

[0013] Preferably, the sound absorbing panel is provided with a plurality of air guide holes distributed in a rectangular array, the air guide holes are arranged in a corrugated structure, the sound insulation panel is provided with a plurality of ventilation holes distributed in a rectangular array, the ventilation holes are connected with the air guide holes, and a plurality of sound absorbing sheets distributed in an equidistant and staggered manner are fixed on the inner walls of the ventilation holes.

[0014] Preferably, the heat dissipation assembly includes a frame arranged inside the box, the frame is located above the noise reduction assembly, two fans are installed inside the frame, a rubber pad is bonded to the edge of the lower surface of the frame, and the rubber pad is in contact with the inner bottom wall of the box.

[0015] Preferably, two symmetrically distributed extension plates are fixed to one end of the frame, shock-absorbing gaskets are bonded to the lower surfaces of the extension plates, the shock-absorbing gaskets are fitted to the inner bottom wall of the box, and the extension plates are fixedly connected to the box via limiting bolts.

[0016] Beneficial Effects

[0017] The utility model provides a noise reduction structure for a DC charging pile. Compared with the prior art, it has the following beneficial effects:

[0018] 1. The noise reduction structure of the DC charging pile is provided with a noise reduction layer on the inner wall of the box body, and a noise reduction component is provided in the air inlet mesh. The anti-vibration pad on the noise reduction layer cooperates with the sound insulation layer to achieve a good sound insulation effect, and the groove in the sound insulation layer is filled with sound-absorbing cotton, which can absorb part of the noise and further improve the noise reduction effect. The sound-absorbing board and the sound insulation board on the noise reduction component cooperate to achieve a good noise reduction effect. The air guide holes on the washing board and the ventilation holes on the sound insulation board do not affect the ventilation and heat dissipation of the heat dissipation mechanism.

[0019] 2. The noise reduction structure of the DC charging pile achieves the effect of wind circulation by setting a heat dissipation component in the box. The two fans on the heat dissipation component are the air inlet fan and the air outlet fan respectively, which improves the heat dissipation effect of the device. Rubber pads and shock-absorbing gaskets are set at the connection between the frame and the box, which reduces the transmission of noise generated during the operation of the fan to the box, thereby achieving the effect of noise reduction. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0021] Figure 2 This is a schematic diagram of the box structure of the utility model;

[0022] Figure 3 This is a schematic diagram of the noise reduction layer structure section of the utility model;

[0023] Figure 4 This is a schematic diagram of the structure of the noise reduction component of the utility model;

[0024] Figure 5 This is a schematic cross-sectional view of the noise reduction component structure of the utility model;

[0025] Figure 6 This is a schematic diagram of the heat dissipation component structure of the utility model.

[0026] In the figure: box body 1, shell 11, limit plate 12, filter screen plate 13, noise reduction layer 2, anti-vibration pad 21, sound insulation layer 22, groove 23, sound absorbing cotton 24, through hole 25, noise reduction component 3, sound absorbing board 31, air guide hole 311, sound insulation board 32, ventilation hole 321, sound absorbing sheet 322, heat dissipation component 4, frame 41, fan 42, rubber pad 43, extension plate 44, shock absorbing gasket 45. DETAILED DESCRIPTION

[0027] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0028] The utility model provides two technical solutions:

[0029] Figure 1-5 A first embodiment is shown: a noise reduction structure of a DC charging pile, comprising:

[0030] Box body 1, a shell is arranged outside the opening of box body 1, and the shell is connected to box body 1 by bolts. An air inlet is arranged at the bottom of box body 1, and limit plates 12 are arranged on both sides of the outer side of the air inlet, and the limit plates 12 are arranged in an L-shaped structure. A filter screen plate 13 is arranged between the two limit plates 12, and the filter screen plate 13 plays a role in filtering dust in the air. Both ends of the filter screen plate 13 are limited by the limit plates 12, so that the filter screen plate 13 is stably installed;

[0031] Noise reduction layer 2, the noise reduction layer 2 is arranged on the inner wall of the box body 1, and is used for noise reduction of the components in the box body 1. The noise reduction layer 2 includes a shock-absorbing pad 21 bonded to the inner wall of the box body 1, and the shock-absorbing pad 21 plays a role in shock-absorbing and noise reduction. A sound insulation layer 22 is bonded to the inner side of the shock-absorbing pad 21, and the sound insulation layer 22 plays a certain sound insulation effect. A plurality of grooves 23 distributed in a rectangular array are provided on the inner side of the sound insulation layer 22, and the interior of the groove 23 is filled with sound-absorbing cotton 24. A through hole 25 is provided in the middle of the groove bottom of the groove 23, and the sound-absorbing cotton 24 cooperates with the through hole 25 to absorb part of the noise, thereby improving the noise reduction effect;

[0032] The noise reduction component 3 is located on the inner side of the air inlet mesh and is used to reduce the noise of the heat dissipation mechanism. The noise reduction component 3 includes a sound absorbing board 31 and a sound insulation board 32 arranged in the groove on the inner side of the air inlet mesh. The sound absorbing board 31 can absorb part of the noise, and the sound insulation board 32 can reflect part of the noise, which has a good noise reduction effect. The sound absorbing board 31 is located above the sound insulation board 32. A plurality of air guide holes 311 distributed in a rectangular array are opened on the sound absorbing board 31. The air guide holes 311 are set as a corrugated structure. The air guide holes 311 of the corrugated structure increase the contact between the noise and the sound absorbing plate 31, thereby improving the sound absorption effect of the sound absorbing plate 31. The sound insulation plate 32 is provided with a plurality of ventilation holes 321 distributed in a rectangular array, the ventilation holes 321 are connected to the air guide holes 311, and a plurality of sound absorbing sheets 322 distributed in an equidistant and staggered manner are fixed on the inner wall of the ventilation hole 321. The sound absorbing sheets 322 in the ventilation hole 321 can absorb part of the noise passing through the ventilation hole 321, thereby improving the noise reduction effect.

[0033] Figure 1 and 6A second embodiment is shown, which mainly differs from the first embodiment in that it includes a heat dissipation component 4, which is located above the noise reduction component 3 and is used to dissipate heat in the box body 1. The heat dissipation component 4 includes a frame 41 arranged inside the box body 1, and the frame 41 is located above the noise reduction component 3. Two fans 42 are installed inside the frame 41, one is an air inlet fan 42 and the other is an air outlet fan 42, which achieves the effect of wind circulation and improves the heat dissipation effect. A rubber pad 43 is bonded to the edge of the lower surface of the frame 41, and the rubber pad 43 fits with the inner bottom wall of the box body 1. Two symmetrically distributed extension plates 44 are fixed to one end of the frame 41, and a shock-absorbing gasket 45 is bonded to the lower surface of the extension plate 44, and the shock-absorbing gasket 45 fits with the inner bottom wall of the box body 1. The extension plate 44 is fixedly connected to the box body 1 by a limiting bolt. The setting of the rubber pad 43 and the shock-absorbing gasket 45 reduces the propagation of the vibration of the fan 42 and improves the noise reduction effect.

[0034] Meanwhile, the contents not described in detail in this specification belong to the prior art known to those skilled in the art, and the model parameters of each electrical appliance are not specifically limited, and conventional equipment can be used.

[0035] When in use, one of the two fans 42 on the frame 41 draws external air into the box body 1, and the other exhausts the air in the box body 1. The air guide holes 311 on the sound absorbing board 31 and the ventilation holes 321 on the sound insulation board 32 do not affect the ventilation and heat dissipation of the fans 42. At the same time, the corrugated air guide holes 311 enhance the sound absorption effect of the sound absorbing board 31. The sound absorbing sheet 322 in the ventilation hole 321 can absorb part of the noise, so that the noise reduction component 3 does not affect the heat dissipation of the fan 42 while achieving the noise reduction effect. The noise reduction layer 2 in the box body 1 cooperates with the anti-vibration pad 21, the sound insulation layer 22 and the sound absorbing cotton 24 thereon, which plays a good noise reduction role.

[0036] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0037] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A noise reduction structure for a DC charging pile, characterized in that ,include: A box body, an outer shell is arranged outside the opening of the box body, the outer shell is connected to the box body by bolts, an air inlet mesh port is opened at the bottom of the box body, limit plates are arranged on both sides of the outer side of the air inlet mesh port, and a filter screen plate is arranged between the two limit plates; A noise reduction layer, which is arranged on the inner wall of the box body and is used to reduce the noise of the components in the box body; A noise reduction component, which is located on the inner side of the air inlet mesh and is used to reduce the noise of the heat dissipation mechanism; The heat dissipation component is located above the noise reduction component and is used for dissipating heat inside the box.

2. The noise reduction structure of a DC charging pile according to claim 1, characterized in that: The noise reduction layer includes a vibration-absorbing pad bonded to the inner wall of the box body, a sound insulation layer is bonded to the inner side of the vibration-absorbing pad, a plurality of grooves distributed in a rectangular array are opened on the inner side of the sound insulation layer, the interior of the grooves is filled with sound-absorbing cotton, and a through hole is opened in the middle of the bottom of the groove.

3. The noise reduction structure of a DC charging pile according to claim 1, characterized in that: The noise reduction component includes a sound absorbing plate and a sound insulating plate which are arranged in the inner groove of the air inlet mesh, and the sound absorbing plate is located above the sound insulating plate.

4. The noise reduction structure of a DC charging pile according to claim 3, characterized in that: The sound absorbing board is provided with a plurality of air guide holes distributed in a rectangular array, and the air guide holes are arranged in a corrugated structure. The sound insulation board is provided with a plurality of ventilation holes distributed in a rectangular array, and the ventilation holes are connected with the air guide holes, and a plurality of sound absorbing sheets distributed in an equidistant and staggered manner are fixed on the inner walls of the ventilation holes.

5. The noise reduction structure of a DC charging pile according to claim 1, characterized in that: The heat dissipation component includes a frame arranged inside the box, the frame is located above the noise reduction component, two fans are installed inside the frame, a rubber pad is bonded to the edge of the lower surface of the frame, and the rubber pad is in contact with the inner bottom wall of the box.

6. The noise reduction structure of a DC charging pile according to claim 5, characterized in that: Two symmetrically distributed extension plates are fixed to one end of the frame, a shock-absorbing gasket is bonded to the lower surface of the extension plate, the shock-absorbing gasket is fitted with the inner bottom wall of the box body, and the extension plate is fixedly connected to the box body by limiting bolts.

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