Noise reduction cover for automobile charger and charging device

Abstract

The invention provides a noise reduction cover for an automobile charger and a charging device. The noise reduction cover for the automobile charger comprises a noise reduction cover body, a sound insulation layer, a cross beam and a buckle assembly. The noise reduction cover body comprises a back plate, a first side plate, a second side plate, a third side plate and a fourth side plate, the noise reduction cover body with a cavity is defined by the back plate, the first side plate, the second side plate, the third side plate and the fourth side plate, the first side plate and the second side plate are oppositely arranged, and the third side plate and the fourth side plate are oppositely arranged; the sides, facing the cavity, of the back plate, the first side plate, the second side plate and the third side plate are provided with the sound insulation layers. The cross beam is arranged on one side, far away from the back plate, of the fourth side plate; the buckle assemblies are arranged at the two ends of the cross beam, the first end of the cross beam is fixedly connected with the first side plate through the buckle assemblies, and the second end of the cross beam is fixedly connected with the second side plate through the buckle assemblies.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of charging equipment, in particular to a noise reduction cover for an automobile charger and a charging device. BACKGROUND

[0002] A high-power charger for an electric vehicle generates power loss when charging the vehicle, and the power loss accumulates in the charger in the form of heat, causing the temperature inside the charger to rise, which in turn damages heat-sensitive components of the charger, such as chips, PCB boards, cables, etc. In severe cases, it can cause the power of the charger to decrease, and even cause a fire risk.

[0003] At present, high-power chargers for electric vehicles generally use forced air cooling mode to dissipate heat from electrical components inside the charger, that is, a high-power fan is installed on the air duct of the charger to drive cooling air to flow in the air duct to carry away heat. The greater the power of the charger, the more heat loss it generates, so more fans with higher speed and larger air volume need to be installed for forced air cooling to dissipate heat, which in turn causes the noise of the fan to become louder and louder. For example, a 1000kW charger has 30 high-speed axial flow fans installed, and the noise reaches 90dB when working at full power, causing significant noise pollution to the environment around the charger.

[0004] Since the chargers installed on the market have already been installed and put into use, it is very difficult to simply change the structure of the charger to control noise, and it is necessary to control the noise of the charger without affecting the existing structure of the charging pile. SUMMARY

[0005] Therefore, it is necessary to provide a noise reduction cover for an automobile charger and a charging device to solve the above technical problems.

[0006] A noise reduction cover for an automobile charger, comprising: a noise reduction cover body, comprising a back plate, a first side plate, a second side plate, a third side plate and a fourth side plate, the back plate, the first side plate, the second side plate and the third side plate collectively form a cavity with an opening, and the first side plate and the second side plate are oppositely arranged; a sound insulation layer, the back plate, the first side plate, the second side plate and the third side plate each have the sound insulation layer on the side facing the cavity; a cross beam arranged on the side of the back plate away from the third side plate, the third side plate and the cross beam being located on the upper and lower sides of the back plate; and a buckle assembly, the cross beam has the buckle assembly at both ends, and the first end of the cross beam is fixedly connected to the first side plate through the buckle assembly, and the second end of the cross beam is fixedly connected to the second side plate through the buckle assembly.

[0007] In one embodiment, the snap-fit ​​assembly includes: Sliding hooks are provided at both ends of the crossbeam; and An adjusting screw, the head of which is located on the outside of the noise-canceling cover body, the shank of which passes sequentially through the noise-canceling cover body, the sliding hook, and the end of the crossbeam along the length of the crossbeam, and the shank of which is threadedly connected to the sliding hook.

[0008] In one embodiment, rotating the adjusting screw counterclockwise moves the sliding hook along the length of the crossbeam toward a position closer to the screw head of the adjusting screw, while rotating the adjusting screw clockwise moves the sliding hook along the length of the crossbeam toward a position farther from the screw head of the adjusting screw.

[0009] In one embodiment, the noise reduction cover for the car charger further includes: A vertical beam buckle is provided between the two ends of the horizontal beam. The first side of the vertical beam buckle is provided with a first flange, and the second side of the vertical beam buckle is provided with a second flange. The first flange and the second flange are arranged opposite to each other, and both the first flange and the second flange are located on the side of the vertical beam buckle away from the back plate.

[0010] In one embodiment, the first flange has a first rolled edge on the side facing the second flange, and the second flange has a second rolled edge on the side facing the first flange, with the first rolled edge and the second rolled edge being offset from each other.

[0011] In one embodiment, the noise reduction cover for the car charger further includes: Sealing strips are provided on the side of the first side plate away from the back plate, the side of the second side plate away from the back plate, and the side of the third side plate away from the back plate.

[0012] In one embodiment, the sound insulation layer is sound-absorbing cotton, which is adhered to the back panel, the first side panel, the second side panel, and the third side panel on the side facing the cavity.

[0013] In one embodiment, the connection between the back plate and the first side plate is configured as an arc-shaped structure, and the connection between the back plate and the second side plate is configured as an arc-shaped structure, wherein the radius of the arc-shaped structure is 15mm.

[0014] In one embodiment, the noise reduction cover for the car charger further includes: A hook is provided, which is connected to the side of the third side plate away from the back plate.

[0015] A charging device includes a noise reduction cover for an automotive charger as described in any of the above embodiments.

[0016] Compared with the prior art, the above-mentioned noise reduction cover and charging device for an automotive charger are described. The noise reduction cover for the automotive charger includes: a noise reduction cover body, a sound insulation layer, a crossbeam, and a fastening assembly. The noise reduction cover body includes a back plate, a first side plate, a second side plate, and a third side plate. The back plate, the first side plate, the second side plate, and the third side plate together enclose a cavity with an opening. The first side plate and the second side plate are arranged opposite each other. The sound insulation layer is provided on the side of the back plate, the first side plate, the second side plate, and the third side plate facing the cavity. The third side plate and the crossbeam are located on the upper and lower sides of the back plate, respectively. The fastening assembly is provided at both ends of the crossbeam, and the first end of the crossbeam is fixedly connected to the first side plate through the fastening assembly, and the second end of the crossbeam is fixedly connected to the second side plate through the fastening assembly.

[0017] Based on the main body of the noise reduction cover, this application uses a crossbeam and a buckle assembly to suspend the noise reduction cover for the car charger in the form of hooks on the air inlet and outlet door panel of the charger. This does not damage the existing charging pile structure and the installation method is simple. At the same time, the noise reduction effect is achieved by the resonance absorption of the sound insulation layer attached inside the main body of the noise reduction cover and the overall noise reduction of the noise reduction cover. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this application or the conventional technology, the drawings used in the description of the embodiments or the conventional technology will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 A schematic diagram of the structure of a noise reduction cover for an automotive charger provided in an embodiment of this application. Figure 1 ; Figure 2 A schematic diagram of the structure of a noise reduction cover for an automotive charger provided in an embodiment of this application. Figure 2 ; Figure 3 This is a schematic diagram of the structure of a snap-fit ​​assembly provided in an embodiment of this application; Figure 4 A schematic diagram of the operation of a snap-fit ​​assembly provided in an embodiment of this application. Figure 1 ; Figure 2 A schematic diagram of the operation of a snap-fit ​​assembly provided in an embodiment of this application. Figure 6 ; Figure 7 This is a schematic diagram of the structure of a vertical beam clip provided in one embodiment of this application; Figure 8 This is a schematic diagram of the operation of a vertical beam clip provided in one embodiment of this application; Figure 1 This is a schematic diagram of the structure of a charging device provided in an embodiment of this application.

[0020] Explanation of reference numerals in the attached figures: 10. Noise reduction cover for car charger; 11. Charger; 100. Noise reduction cover body; 101. Cavity; 110. Back plate; 120. First side plate; 130. Second side plate; 140. Third side plate; 150. Hook; 20. Charging device; 200. Sound insulation layer; 300. Crossbeam; 400. Buckle assembly; 410. Sliding hook; 411. Press-fit thread; 420. Adjusting screw; 500. Vertical beam buckle; 501. Middle partition plate; 502. Fixing screw; 510. First flange; 511. First rolled edge; 520. Second flange; 521. Second rolled edge; 600. Sealing strip. Detailed Implementation

[0021] To make the above-mentioned objectives, features, and advantages of this application more apparent and understandable, the specific embodiments of this application are described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of this application. However, this application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this application. Therefore, this application is not limited to the specific embodiments disclosed below.

[0022] The serial numbers assigned to components in this document, such as "first" and "second," are used solely to distinguish the objects being described and do not have any sequential or technical meaning. The terms "connection" and "linkage" used in this application, unless otherwise specified, include both direct and indirect connections (linkages). It should be understood that the terms "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," and "counterclockwise," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used solely for the convenience of describing this application and for simplification, 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. Therefore, they should not be construed as limitations on this application.

[0023] In this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0024] It should be noted that when a component is said to be "fixed to" another component, it can be directly attached to the other component or there may be an intervening component. When a component is said to be "connected to" another component, it can be directly connected to the other component or there may be an intervening component.

[0025] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein in the specification of this application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0026] Please see Figure 2 and Figures 3-5 This application provides a noise reduction cover 10 for an automotive charger in one embodiment. The noise reduction cover 10 includes: a noise reduction cover body 100, a sound insulation layer 200, a crossbeam 300, and a snap-fit ​​assembly 400. The noise reduction cover body 100 includes a back plate 110, a first side plate 120, a second side plate 130, and a third side plate 140. The back plate 110, first side plate 120, second side plate 130, and third side plate 140 together enclose a cavity 101 with an opening, and the first side plate 120 and second side plate 130 are arranged opposite each other. The sound insulation layer 200 is provided on the side of the back plate 110, first side plate 120, second side plate 130, and third side plate 140 facing the cavity 101. The crossbeam 300 is disposed on the side of the back plate 110 away from the third side plate 140, and the third side plate 140 and the crossbeam 300 are located on the upper and lower sides of the back plate 110. Both ends of the crossbeam 300 are provided with the snap-fit ​​assembly 400, and the first end of the crossbeam 300 is fixedly connected to the first side plate 120 via the snap-fit ​​assembly 400. The second end of the crossbeam 300 is fixedly connected to the second side plate 130 via the snap-fit ​​assembly 400.

[0027] In some embodiments, the noise-reducing cover body 100 is a basic frame structure of the cover, comprising a generally rectangular back plate 110, and a first side plate 120, a second side plate 130, and a third side plate 140 extending in the same direction from the four edges of the back plate 110. The first side plate 120 and the second side plate 130 are arranged opposite each other and parallel to each other. The back plate 110, the first side plate 120, the second side plate 130, and the third side plate 140 together form a cavity 101 with an opening. In use, the noise-reducing cover 10 for the car charger can be placed on the air inlet / outlet door panel of the charger, and the installation method is simple without damaging the existing charging pile structure.

[0028] In some embodiments, the noise reduction cover body 100 can be made of steel plate, processed by sheet metal, resulting in a robust overall structure and high safety. In some embodiments, the third side plate 140 is inclinedly disposed on the side of the back plate 110 away from the third side plate 140. That is, the upper part of the noise reduction cover body 100 is provided with a slope, which serves to guide the cooling air of the charger downwards, and also has a water-repellent function to prevent rainwater from accumulating on the top of the noise reduction cover, thereby improving charging safety.

[0029] In some embodiments, to effectively absorb noise, sound insulation layers 200 are provided on the inner surfaces of the back plate 110, the first side plate 120, the second side plate 130, and the third side plate 140 facing the cavity 101. Preferably, the sound insulation layer 200 is sound-absorbing cotton, which is glued and fixed to the inner side of each of the aforementioned plates with adhesive, and can efficiently absorb the sound wave energy generated by the charger. When in use, the noise reduction cover 10 for the car charger is installed entirely on the air inlet and outlet of the charger, providing a wrap-around coverage of the noise source. The noise is absorbed through the resonance of the sound-absorbing cotton attached inside the main body 100 of the noise reduction cover, as well as the overall noise isolation of the noise reduction cover, resulting in excellent noise reduction effect.

[0030] In some embodiments, the crossbeam 300 is disposed on the side of the back plate 110 away from the third side plate 140. The crossbeam 300 is used to strengthen the structural strength of the noise-canceling cover body 100 at the opening and serves as a mounting connection point. A set of snap-fit ​​assemblies 400 is provided at both ends of the crossbeam 300. The first end of the crossbeam 300 is fixedly connected to the first side plate 120 via the snap-fit ​​assembly 400 on one side, and the second end of the crossbeam 300 is fixedly connected to the second side plate 130 via the snap-fit ​​assembly 400 on the other side. In this way, the crossbeam 300 connects the opening sides of the first side plate 120 and the second side plate 130 together, forming a stable frame structure to prevent the cover from deforming due to vibration or external forces.

[0031] like Figure 6As shown, in some embodiments, the latching assembly 400 includes a sliding hook 410 and an adjusting screw 420. The sliding hook 410 is provided at both ends of the crossbeam 300. The screw head of the adjusting screw 420 is located on the outside of the noise-canceling cover body 100. The screw shank of the adjusting screw 420 passes sequentially through the noise-canceling cover body 100, the sliding hook 410, and the end of the crossbeam 300 along the length direction of the crossbeam 300, and the screw shank of the adjusting screw 420 is threadedly connected to the sliding hook 410.

[0032] In some embodiments, the snap-fit ​​assembly 400 further includes a press-fit thread 411. The press-fit thread 411 is integrated with the sliding hook 410, and the press-fit thread 411 is used for threaded connection with the adjusting screw 420. In some embodiments, the sliding hook 410 is fixed or integrally formed on the end of the crossbeam 300. During assembly, the screw of the adjusting screw 420 passes through the outside of the noise-canceling cover body 100 (i.e., outside the cover), sequentially through a pre-set through hole on the first side plate 120 (or the second side plate 130), the threaded hole on the sliding hook 410, and finally abuts against or is slightly screwed into the hole at the end of the crossbeam 300. The screw head of the adjusting screw 420 remains on the outside of the noise-canceling cover body 100 for easy operation.

[0033] In some embodiments, an important function of the snap-fit ​​assembly 400 is to provide adjustment of the installation tightness. Specifically, when the adjusting screw 420 is rotated counterclockwise, the sliding hook 410, under the action of the thread, moves along the length of the crossbeam 300 (i.e., towards the center of the cover) towards the head of the adjusting screw 420, thereby tightening the connection between the crossbeam 300 and the side plate, making the cover fit the charger more tightly. Conversely, when the adjusting screw 420 is rotated clockwise, the sliding hook 410 moves away from the screw head, which can loosen the connection, facilitating the installation and removal of the cover. This design allows the noise-canceling cover 10 to adapt to chargers with slight size differences and ensures a stable installation.

[0034] like Figure 7 and Figure 8 As shown, in some embodiments, the noise reduction cover 10 for the car charger further includes a vertical beam buckle 500. The vertical beam buckle 500 is disposed between the two ends of the crossbeam 300. A first flange 510 is provided on the first side of the vertical beam buckle 500, and a second flange 520 is provided on the second side of the vertical beam buckle 500. The first flange 510 and the second flange 520 are disposed opposite to each other, and both the first flange 510 and the second flange 520 are located on the side of the vertical beam buckle 500 away from the back plate 110.

[0035] In some embodiments, the vertical beam buckle 500 is disposed on the horizontal beam 300, located between its two ends. The first side of the vertical beam buckle 500 is bent upwards (i.e., away from the back plate 110) to form a first flange 510, and its second side is similarly bent upwards to form a second flange 520. The first flange 510 and the second flange 520 are disposed opposite to each other. More preferably, a first rolled edge 511 is provided on the inner edge of the first flange 510 facing the second flange 520, and a second rolled edge 521 is provided on the inner edge of the second flange 520 facing the first flange 510. Furthermore, the first rolled edge 511 and the second rolled edge 521 are staggered in height or horizontal position, forming a slot structure. This vertical beam buckle 500 can be used to snap onto protrusions, guide rails, or wire harnesses on the charger itself or its bracket, serving as an auxiliary fixation and cable management function, increasing ease of use.

[0036] In some embodiments, the process of fixing the vertical beam buckle 500 is as follows: tilt the vertical beam buckle 500, hook the left and right folded edges of the vertical beam buckle 500 onto the middle partition 501 of the air inlet or outlet door panel of the charger, then straighten the vertical beam buckle 500 and move it downward, and use two fixing screws 502 to fix the vertical beam buckle 500 onto the crossbeam 300.

[0037] In some embodiments, the noise reduction cover 10 for the car charger further includes a sealing strip 600. Sealing strips 600 are provided on the side of the first side plate 120 away from the back plate 110, the side of the second side plate 130 away from the back plate 110, and the side of the third side plate 140 away from the back plate 110.

[0038] In some embodiments, to improve sealing and dustproofing, sealing strips 600 are provided at the edges of the first side panel 120 away from the back panel 110 (i.e., the top edge), the edges of the second side panel 130 away from the back panel 110, and the edges of the third side panel 130 away from the back panel 110. When the noise reduction cover 10 is installed in place, these sealing strips 600 can fit tightly against the charger or mounting surface, effectively reducing noise leakage and dust ingress.

[0039] In some embodiments, the connection between the back plate 110 and the first side plate 120 is configured as an arc-shaped structure, and the connection between the back plate 110 and the second side plate 130 is configured as an arc-shaped structure, wherein the radius of the arc-shaped structure is 15mm.

[0040] In some embodiments, to enhance structural strength and avoid stress concentration, the connection points between the back plate 110 and the first side plate 120, and between the back plate 110 and the second side plate 130, are both designed as smoothly transitioning arc-shaped structures. Furthermore, the radius R of this arc-shaped structure is preferably 15 mm. This design also improves the reflection of the internal sound field, contributing to enhanced sound absorption. It also prevents mechanical impact injuries to personnel during operation of the charger, improving safety during use.

[0041] In some embodiments, the noise reduction cover 10 for the car charger further includes a hook 160. The hook 160 is connected to the side of the third side plate 140 away from the back plate 110. Using the hook 160, the entire noise reduction cover 10 for the car charger can be suspended on the air inlet / outlet door panel of the charger without damaging the existing charging pile structure, making installation simple.

[0042] Please see ​ This application provides a charging device 20 in one embodiment. The charging device 20 includes a noise reduction cover 10 for an automotive charger as described in any of the above embodiments. Specifically, the noise reduction cover 10 for the automotive charger is hung on the air inlet and air outlet doors of the charger 11. Adjusting the adjusting screws 420 on both sides of the bottom of the noise reduction cover body 100 causes the sliding hooks 410 to move to both sides of the noise reduction cover body 100 until the sliding hooks 410 contact and press firmly against the sides of the air inlet and air outlet doors of the charger. Tilting the vertical beam buckle 500, hooking the left and right folded edges of the vertical beam buckle 500 onto the middle partition 501 of the air inlet and air outlet doors of the charger 11, then straightening the vertical beam buckle 500 and moving it downwards, using two fixing screws 502 to fix the vertical beam buckle 500 onto the crossbeam 300. When the charger is working, the cooling air enters from the open area at the bottom of the noise reduction cover body 100 and exits from the open area at the bottom of the noise reduction cover body 100. When the charger is working, the noise is reduced by the resonance absorption of the sound-absorbing cotton inside the noise reduction cover and the blocking of the noise reduction cover. It also helps to protect the charger from rain and dust.

[0043] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0044] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the invention patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this patent application should be determined by the appended claims.

Claims

1. A noise reduction cover for an automotive charger, characterized in that, include: The noise reduction cover body includes a back plate, a first side plate, a second side plate, a third side plate, and a fourth side plate. The back plate, the first side plate, the second side plate, and the third side plate together enclose a cavity with an opening. The first side plate and the second side plate are arranged opposite to each other. The sound insulation layer is provided on the side of the back panel, the first side panel, the second side panel and the third side panel facing the cavity; A crossbeam is disposed on the side of the back plate away from the third side plate, and the third side plate and the crossbeam are located on the upper and lower sides of the back plate; and The crossbeam has a snap-fit ​​assembly at both ends, with the first end of the crossbeam fixedly connected to the first side plate via the snap-fit ​​assembly, and the second end of the crossbeam fixedly connected to the second side plate via the snap-fit ​​assembly.

2. The noise reduction cover for an automotive charger as described in claim 1, characterized in that, The snap-fit ​​assembly includes: Sliding hooks are provided at both ends of the crossbeam; and An adjusting screw, the head of which is located on the outside of the noise-canceling cover body, the shank of which passes sequentially through the noise-canceling cover body, the sliding hook, and the end of the crossbeam along the length of the crossbeam, and the shank of which is threadedly connected to the sliding hook.

3. The noise reduction cover for an automotive charger as described in claim 2, characterized in that, Rotating the adjusting screw counterclockwise causes the sliding hook to move closer to the screw head along the length of the crossbeam. Rotating the adjusting screw clockwise causes the sliding hook to move further away from the screw head along the length of the crossbeam.

4. The noise reduction cover for an automotive charger as described in claim 1, characterized in that, The noise reduction cover for the car charger also includes: A vertical beam buckle is provided between the two ends of the horizontal beam. The first side of the vertical beam buckle is provided with a first flange, and the second side of the vertical beam buckle is provided with a second flange. The first flange and the second flange are arranged opposite to each other, and both the first flange and the second flange are located on the side of the vertical beam buckle away from the back plate.

5. The noise reduction cover for an automotive charger as described in claim 4, characterized in that, The first flange has a first rolled edge on the side facing the second flange, and the second flange has a second rolled edge on the side facing the first flange. The first rolled edge and the second rolled edge are offset from each other.

6. The noise reduction cover for an automotive charger as described in claim 1, characterized in that, The noise reduction cover for the car charger also includes: Sealing strips are provided on the side of the first side plate away from the back plate, the side of the second side plate away from the back plate, and the side of the third side plate away from the back plate.

7. The noise reduction cover for an automotive charger as described in claim 1, characterized in that, The sound insulation layer is sound-absorbing cotton, which is adhered to the back panel, the first side panel, the second side panel, and the third side panel on the side facing the cavity.

8. The noise reduction cover for an automotive charger as described in claim 1, characterized in that, The connection between the back plate and the first side plate is set as an arc-shaped structure, and the connection between the back plate and the second side plate is set as an arc-shaped structure, with an arc radius of 15mm.

9. The noise reduction cover for an automotive charger as described in claim 7, characterized in that, The noise reduction cover for the car charger also includes: A hook is provided, which is connected to the side of the third side plate away from the back plate.

10. A charging device, characterized in that, Including a noise reduction cover for an automotive charger as described in any one of claims 1-9.

Images