Anti-explosion liquid collecting device of photovoltaic inverter and photovoltaic inverter
By introducing an explosion-proof liquid collection device into the photovoltaic inverter, the electrolyte is collected using the shell through holes and baffle structure, and combined with fan cooling, the problem of liquid spraying after the electrolytic capacitor explodes is solved, thus improving safety and heat dissipation.
Patent Information
- Application Number
- CN202520074178.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-13
- Publication Date
- 2026-01-30
- Estimated Expiration
- 2035-01-13
AI Technical Summary
The existing explosion-proof structure of photovoltaic inverters can only prevent the top cover from being blown off, and cannot effectively collect the electrolyte sprayed out after the electrolytic capacitor explodes, which poses safety hazards and environmental pollution risks.
Design an explosion-proof liquid collection device, including a housing and a baffle structure. The housing has a through hole, and the baffle is inclined to guide the airflow and liquid to flow vertically downward. It is combined with a liquid collection box to collect electrolyte and equipped with a fan for heat dissipation.
It effectively prevents electrolyte from spraying onto the outside of the photovoltaic inverter, ensuring the safety of equipment and personnel, avoiding environmental pollution, and improving the heat dissipation of components, thus extending their service life.
Smart Images
Figure CN223859031U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model belongs to power electronics technical field, concretely relates to a kind of photovoltaic inverter's explosion-proof liquid collecting device and photovoltaic inverter. BACKGROUND
[0002] The explosion-proof structure of current photovoltaic inverter is relatively single, and the explosion-proof structure only has the function of explosion prevention to prevent the upper cover of the photovoltaic inverter from being lifted, but the electrolytic solution sprayed after the explosion of the electrolytic capacitor is not collected and treated, and the electrolytic solution will be directly sprayed on the circuit board or flow to the outside of the photovoltaic inverter, which poses a potential safety hazard to personnel and equipment. CONTENT OF UTILITY MODEL
[0003] To solve the above technical problems, the utility model provides a kind of photovoltaic inverter's explosion-proof liquid collecting device and photovoltaic inverter, and the safety performance is higher when using, to avoid environmental pollution.
[0004] To achieve the above purpose, the utility model adopts the following technical scheme:
[0005] A kind of photovoltaic inverter's explosion-proof liquid collecting device, including shell, the shell has the inner chamber for accommodating electrolytic capacitor of photovoltaic inverter, a plurality of through holes are set on the shell and are communicated with the inner chamber;The explosion-proof liquid collecting device further includes a plurality of baffles, the baffle is covered on the outside of the through hole, the upper edge of the baffle is connected to the shell, the baffle is gradually inclined to the outside of the shell from top to bottom, the lower edge of the baffle is lower than the lower edge of the through hole or is level, and the lower edge of the baffle and the shell are spaced apart to form an opening to allow the airflow and liquid generated after the explosion of the electrolytic capacitor to flow out of the inner chamber, the orthographic projection of the baffle in the vertical plane completely covers the orthographic projection of the through hole in the vertical plane.
[0006] In a preferred embodiment, the explosion-proof liquid collecting device further includes a liquid collecting box arranged below the baffle, the liquid collecting box has an accommodating cavity for accommodating electrolytic solution;The shell includes a first shell and a second shell fixedly connected, the electrolytic capacitor is arranged on a fixed plate, the first shell and the fixed plate are fixedly connected, and the baffle is arranged on the second shell.
[0007] In a preferred embodiment, the explosion-proof liquid collecting device further includes a fan arranged above the baffle, the air inlet side of the fan faces a first inner cavity surrounded by the first shell and the second shell, and the air outlet side of the fan faces a second inner cavity of the box.
[0008] In a preferred embodiment, the second shell has an air inlet between the lower end and the liquid collecting box, and the air inlet is located below the baffle.
[0009] In a preferred embodiment, the second shell is provided with a mounting seat on the upper end thereof, and the fan is arranged on the mounting seat.
[0010] In a preferred embodiment, the mounting seat is provided with an inclined slope, and the fan is arranged on the inclined slope; the angle between the inclined slope and the horizontal plane is 30-75°.
[0011] In a preferred embodiment, the second shell is provided with a plurality of side walls, and the baffle is arranged on the plurality of side walls.
[0012] In a preferred embodiment, the first shell and the fixing plate are provided with a positioning assembly, the positioning assembly comprises a positioning pin and a positioning hole, the positioning pin is arranged on the first shell, the positioning hole is arranged on the fixing plate, and the positioning pin is inserted into the positioning hole to position the electrolytic capacitor on the first shell.
[0013] In a preferred embodiment, the photovoltaic inverter further comprises an upper cover, the box body is provided with a plurality of reinforcing pads, and the reinforcing pads are provided with a plurality of mounting holes and / or press-in studs to fixedly connect the box body and the upper cover.
[0014] Specifically, the reinforcing pads are provided with a plurality of mounting holes and press-in studs to fixedly connect the box body and the upper cover.
[0015] The utility model discloses a following technical scheme is adopted:
[0016] A photovoltaic inverter comprises an electrolytic capacitor and the explosion-proof liquid collecting device.
[0017] The utility model adopts the above scheme, and has the following advantages compared with the prior art:
[0018] The explosion-proof liquid collecting device of the utility model, when the electrolytic capacitor explodes, airflow or liquid flows out from the through hole of the shell, the baffle guides the airflow or liquid to move vertically downward, the electrolyte cannot be sprayed to the outside of the photovoltaic inverter at will, the safety of equipment and personnel is guaranteed, and meanwhile, the electrolyte flowing to the outside of the photovoltaic inverter to pollute the environment is avoided. BRIEF DESCRIPTION OF DRAWINGS
[0019] In order to more clearly illustrate the technical scheme of the utility model, the following will briefly introduce the drawings needed to be used in the embodiment description, and obviously, the drawings in the following description are only some embodiments of the utility model, and for those skilled in the art, other drawings can also be obtained according to the drawings without paying creative labor.
[0020] Figure 1 Figure 1 is a perspective view of a photovoltaic inverter according to an embodiment of the present application;
[0021] Figure 2 Figure 2 is a partial enlarged view of A in Figure 1; Figure 1 Figure 3 is a partial enlarged view of B in Figure 1;
[0022] Figure 3 Figure 4 is a schematic view of the inside of a photovoltaic inverter according to an embodiment of the present application;
[0023] Figure 4 Figure 5 is a perspective view of an explosion-proof liquid collecting device according to an embodiment of the present application;
[0024] Figure 5 Figure 6 is another perspective view of the explosion-proof liquid collecting device according to an embodiment of the present application;
[0025] Figure 6 Figure 7 is an exploded schematic view of the explosion-proof liquid collecting device according to an embodiment of the present application;
[0026] Figure 7 Figure 8 is a schematic view of an electrolytic capacitor.
[0027] Figure 1 is a perspective view of a photovoltaic inverter according to an embodiment of the present application;
[0028] 100, photovoltaic inverter; 101, electrolytic capacitor; 102, fixing plate; 103, upper cover; 104, box body; 105, reinforcing pad; 106, mounting hole;
[0029] 1, explosion-proof liquid collecting device; 11, shell; 111, first shell; 112, second shell; 113, baffle; 114, mounting seat; 115, inclined slope; 12, liquid collecting box;
[0030] 2, air inlet; 4, side wall; 5, positioning assembly; 51, positioning hole; 52, positioning pin; 6, circuit board; 7, threading hole; 8, fan; 9, press-in stud. DETAILED DESCRIPTION
[0031] The preferred embodiments of the present application will be described in detail with reference to the drawings. It should be noted that the description of the embodiments is for the purpose of understanding the present application, and does not constitute a limitation of the present application. In addition, the technical features involved in the various embodiments of the present application described below can be combined with each other as long as they do not conflict with each other.
[0032] Reference will be made to Figures 1 to 7As shown, the present embodiment provides a photovoltaic inverter 100, which comprises an upper cover 103, a box body 104, and an electrolytic capacitor 101 and an explosion-proof liquid collecting device 1 arranged in the box body 104, wherein the explosion-proof liquid collecting device 1 covers the electrolytic capacitor 101.
[0033] Further, the upper cover 103 and the box body 104 are fixedly connected by a plurality of fasteners. Specifically, the box body 104 is provided with a plurality of reinforcing pads 105, as shown in Figure 1 As shown, the reinforcing pads 105 are arranged at the corners of the box body 104 and the long edges of the box body 104, and the reinforcing pads 105 are provided with a plurality of mounting holes 106 and press-in studs 9 for fixedly connecting the upper cover 103 and the box body 104, and the mounting holes 106 are specifically screw holes. No reinforcing pad 105 is arranged on the short edges of the box body 104, and only two press-in studs are arranged, so as to enable the photovoltaic inverter to form a weak part (the short edges of the box body) and a reinforcing part (the long edges of the box body). Here, the “long edges” and “short edges” refer to Figure 1 As shown, the longer edges and the shorter edges. When the electrolytic capacitor explodes, the electrolytic capacitor will release a large amount of flammable gas, and the weak part of the photovoltaic inverter will deform to release pressure, and the reinforcing part can prevent the upper cover 103 and the internal components of the box body from flying out, that is, the two shorter edges of the photovoltaic inverter deform to form pressure release openings to allow the gas to be discharged from the weak part.
[0034] Further, as shown in Figures 4 to 6 As shown, the explosion-proof liquid collecting device 1 of the present embodiment comprises a shell 11, a liquid collecting box 12, and a plurality of baffles 113, and the shell 11 and the liquid collecting box 12 are fixedly connected, wherein the shell 11 is made of sheet metal, the shell 11 has an inner cavity for accommodating the electrolytic capacitor 101, and the liquid collecting box 12 has an accommodating cavity for accommodating liquid, and the liquid is specifically electrolyte. The shell 11 is provided with a plurality of through holes in communication with the inner cavity, the baffles 113 cover the outer side of the through holes, the upper edge of the baffle 113 is connected to the shell 11, the baffles 113 gradually incline to the outer side of the shell 11 from top to bottom, the lower edge of the baffle 113 is lower than the lower edge of the through hole or is flush with the lower edge, and the lower edge of the baffle 113 and the shell 11 are spaced from each other to form an opening to allow the gas flow and the liquid generated after the explosion of the electrolytic capacitor to flow out of the inner cavity, the opening faces the accommodating cavity of the liquid collecting box 12, and the normal projection of the baffle 113 in the vertical plane completely covers the normal projection of the through hole in the vertical plane, so as to ensure that the electrolyte can flow vertically downward into the liquid collecting box 12 and cannot be splashed at will. Further, the shell 11 has a first shell 111 and a second shell 112, the electrolytic capacitor 101 is arranged on a fixed plate 102, the first shell 111 and the fixed plate 102 are fixedly connected, and a plurality of baffles 113 are arranged on the second shell 112, and the second shell 112 has a plurality of side walls 4, and each side wall 4 is provided with a plurality of baffles 113.
[0035] When the photovoltaic inverter 100 is hung, the explosion-proof liquid collecting device 1 inside the box 104 is in a vertical state, and the plurality of baffles 113 are arranged in alignment in the vertical direction. When the electrolytic capacitor in the explosion-proof liquid collecting device explodes, the electrolyte will flow out from the through hole and the opening and flow along the plurality of side walls 4 into the accommodating cavity of the liquid collecting box 12, that is, the electrolyte will not spray outside the shell 11 of the explosion-proof liquid collecting device 1 or outside the box 104 of the photovoltaic inverter, ensuring the safety of the equipment and personnel, and also avoiding the electrolyte from flowing outside the box to pollute the environment.
[0036] The explosion-proof liquid collecting device 1 further comprises a fan 8 arranged above the baffle 113. The air inlet side of the fan 8 faces the first inner cavity surrounded by the first shell 111 and the second shell 112, and the air outlet side of the fan 8 faces the second inner cavity of the box 104, specifically, the components on the circuit board in the box 104. The lower end of the second shell 112 and the liquid collecting box 12 have an air inlet 2, and the air inlet 3 is located below the baffle 113. Further, the upper end of the second shell 112 is provided with a mounting seat 114, and the fan 8 is arranged on the mounting seat 114. Further, the mounting seat 114 has an inclined slope 115, and the fan 8 is arranged on the inclined slope 115. The angle between the inclined slope 115 and the horizontal plane is 30-75°. In the embodiment, the angle between the inclined slope 115 and the horizontal plane is 60°.
[0037] When the fan 8 is turned on, the surrounding cold air will be drawn through the air inlet 2 to cool the electrolytic capacitor 101 in the explosion-proof liquid collecting device 1, and the air outlet side of the fan 8 faces the components inside the photovoltaic inverter to cool the components. In addition, it should be noted that the through hole on the shell 11 can function as an air inlet. When the fan 8 is turned on, air can not only enter the interior of the explosion-proof liquid collecting device 1 from the air inlet 2, but also enter the through hole of the shell 11 from the opening, and finally reach the interior of the explosion-proof liquid collecting device 1, thereby enhancing the heat dissipation effect of the electrolytic capacitor.
[0038] Referring to Figure 6 and Figure 7As shown, the first shell 111 and the fixed plate 102 have a positioning assembly 5 therebetween, the positioning assembly 5 comprises positioning pins 52 and positioning holes 51, the positioning pins 52 are arranged on the first shell 111, the positioning holes 51 are arranged on the fixed plate 102, the positioning pins 52 are inserted into the positioning holes 51 to position the electrolytic capacitor 101 on the first shell 111. When assembling the explosion-proof liquid collecting device 1, the positioning pins 52 on the first shell 111 are first inserted into the positioning holes 51 on the fixed plate 102 to position the electrolytic capacitor 101. More specifically, the number of positioning pins 52 is two, which are arranged at two opposite corners of the first shell 111. Further, the first shell 111 is also provided with a plurality of press-in studs 9, and the fixed plate 102 is provided with a plurality of threaded holes, and after the electrolytic capacitor 101 is positioned, the first shell 111 and the fixed plate 102 are fixedly connected by a plurality of screws.
[0039] The explosion-proof liquid collecting device 1 of the embodiment is provided with a threading hole 7, and the cable inside the photovoltaic inverter passes through the threading hole 7 from the electrolytic capacitor to connect to the inductor on the circuit board 6.
[0040] When assembling the explosion-proof liquid collecting device 1 of the embodiment, the first shell 111 is taken as the connection object, the fixed plate 102 with the electrolytic capacitor 101 is placed horizontally, the positioning pins 52 of the first shell 111 are inserted into the positioning holes 51 on the fixed plate 102 to connect the electrolytic capacitor 100 to the first shell 111, then the first shell 111 and the fixed plate 102 are fixedly connected by screws, then the fan 8 and the second shell 112 are assembled together by screws, then the first shell 111 and the second shell 112 are fixedly connected, and finally the entire explosion-proof liquid collecting device 1 is installed into the inner cavity of the photovoltaic inverter 100; when the electrolytic capacitor 101 explodes, the electrolyte produced will be directly sprayed onto the second shell 223 and flow into the accommodating cavity of the liquid collecting box 12, and will not be sprayed onto the circuit board 6 inside the photovoltaic inverter 100 to cause pollution and corrosion to the circuit board 6. The electrolyte will flow into the liquid collecting box 12 along the side wall 4 under the action of gravity, and will not flow to the outside of the shell 11 or the cabinet 104, which can ensure the safety of personnel and equipment.
[0041] In summary, the photovoltaic inverter 100 of the embodiment can avoid the electrolyte produced when the internal electrolytic capacitor 101 explodes from being sprayed onto the outside of the cabinet or the components inside the cabinet, which can ensure the safety of personnel and equipment, protect the environment, and avoid the electrolyte from flowing to the outside of the photovoltaic inverter to pollute the environment. On the other hand, the explosion-proof liquid collecting device 1 of the embodiment has an air inlet 2 and an air outlet side, which can reduce the environmental temperature of the electrolytic capacitor, dissipate heat from the components, and improve the service life.
[0042] As shown in the specification and claims, the terms "comprise" and "include" merely indicate the inclusion of the recited elements, and the method or device can also include other steps or elements. The term "and / or" used herein includes any combination of one or more related items.
[0043] It should be noted that, unless otherwise specified, when a certain feature is referred to as "fixed" or "connected" to another feature, it can be directly fixed or connected to the other feature, or indirectly fixed or connected to the other feature. In addition, the up, down, left, right and other descriptions used in the utility model are only relative to the mutual position relationship of the components of the utility model in the drawings.
[0044] The above embodiments are only for illustrating the technical concept and characteristics of the utility model, and are a preferred embodiment, the purpose of which is to enable those skilled in the art to understand the content of the utility model and implement it, and it cannot limit the protection scope of the utility model. Any equivalent transformation or modification made according to the principle of the utility model should be covered within the protection scope of the utility model.
Claims
1. An explosion-proof liquid collecting device of a photovoltaic inverter, characterized by, The explosion-proof liquid collecting device comprises a shell having an inner cavity for accommodating electrolytic capacitors of a photovoltaic inverter, a plurality of through holes are formed in the shell and communicate with the inner cavity; the explosion-proof liquid collecting device further comprises a plurality of baffles, the baffles are arranged outside the through holes, upper edges of the baffles are connected to the shell, the baffles are gradually inclined to the outside of the shell from top to bottom, lower edges of the baffles are lower than or flush with lower edges of the through holes, and the lower edges of the baffles and the shell are spaced from each other to form openings to allow the electrolytic capacitors to flow out of the inner cavity after explosion, and the baffles completely cover the through holes in a vertical plane.
2. The explosion-proof liquid collecting device according to claim 1, characterized by The explosion-proof liquid collecting device further comprises a liquid collecting box arranged below the baffles, the liquid collecting box has an accommodating cavity for accommodating electrolyte; the shell comprises a first shell and a second shell fixedly connected, the electrolytic capacitors are arranged on a fixed plate, the first shell and the fixed plate are fixedly connected, and the baffles are arranged on the second shell.
3. The explosion-proof liquid collection device of claim 2, wherein The explosion-proof liquid collecting device further comprises a fan arranged above the baffles, an air inlet side of the fan faces a first inner cavity surrounded by the first shell and the second shell, and an air outlet side of the fan faces a second inner cavity of a box body of the photovoltaic inverter.
4. The explosion-proof liquid collecting device according to claim 3, characterized by An air inlet is arranged between a lower end of the second shell and the liquid collecting box, and the air inlet is below the baffles.
5. The explosion-proof liquid collection device according to claim 4, characterized by An installation seat is arranged on an upper end of the second shell, and the fan is arranged on the installation seat.
6. The explosion-proof liquid collection device of claim 5, wherein The installation seat has an inclined surface, the fan is arranged on the inclined surface, and an included angle between the inclined surface and a horizontal plane is 30-75°.
7. The explosion-proof liquid trap of claim 2, wherein The second shell has a plurality of side walls, and each of the side walls is provided with a plurality of baffles.
8. The explosion-proof liquid trap of claim 2, wherein A positioning assembly is arranged between the first shell and the fixed plate, the positioning assembly comprises a positioning pin and a positioning hole, the positioning pin is arranged on the first shell, the positioning hole is arranged on the fixed plate, and the positioning pin is inserted into the positioning hole to position the electrolytic capacitors on the first shell.
9. The explosion-proof liquid trap of claim 1, wherein The photovoltaic inverter further comprises an upper cover, the box body of the photovoltaic inverter is provided with a plurality of reinforcing pads, and the reinforcing pads are provided with a plurality of mounting holes and / or press-in studs to fixedly connect the box body and the upper cover.
10. A photovoltaic inverter comprising an electrolytic capacitor, characterized in that, The explosion-proof liquid collecting device comprises a shell having an inner cavity for accommodating electrolytic capacitors of a photovoltaic inverter, a plurality of through holes are formed in the shell and communicate with the inner cavity; the explosion-proof liquid collecting device further comprises a plurality of baffles, the baffles are arranged outside the through holes, upper edges of the baffles are connected to the shell, the baffles are gradually inclined to the outside of the shell from top to bottom, lower edges of the baffles are lower than or flush with lower edges of the through holes, and the lower edges of the baffles and the shell are spaced from each other to form openings to allow the electrolytic capacitors to flow out of the inner cavity after explosion, and the baffles completely cover the through holes in a vertical plane.