Photovoltaic junction box

Abstract

The utility model relates to the technical field of line connection, and discloses a photovoltaic junction box which comprises a box body, a wiring board fixedly connected to the rear side in the box body, a hinge fixedly connected to the bottom of the rear side of the box body, a bottom cover fixedly connected to the other end of the hinge, a fixing mechanism fixedly connected to the surface of the box body, and a heat dissipation mechanism fixedly connected to the interior of the box body. The fixing mechanism comprises an installation assembly and a closing assembly, the installation assembly is fixedly connected to the rear side of the box body, the closing assembly is fixedly connected to the front side of the box body, the heat dissipation mechanism comprises a fan assembly and a motor assembly, the fan assembly is fixedly connected to the front side in the box body, and the motor assembly is fixedly connected to the right side in the box body. According to the device, the mounting assembly is additionally arranged on the rear side of the box body, the box body can be rapidly fixed and disassembled, the heat dissipation mechanism is additionally arranged in the box body, heat dissipation processing is conducted on components in the box body, and the situation that the components are damaged due to the fact that the box body is in the sun for a long time and the temperature in the box body is too high is prevented.

Description

Technical Field

[0001] The utility model relates to the technical field of circuit connection, and particularly relates to a photovoltaic junction box. Background Technique

[0002] The main function of the junction box is to connect the solar cell circuit inside the component with the external circuit through the positive and negative cables of the junction box and transmit the electric energy. The junction box is adhered to the backplane of the component through silicone. A bypass diode is equipped inside the junction box to protect the battery string. The traditional junction box only designs the internal circuit and lacks the design in terms of the fixation of the box body, which may bring inconvenience during installation and use. Moreover, the junction box is exposed outdoors for a long time and after long-term sunlight exposure, the internal temperature will be too high, causing the internal plastic components to soften and the circuit to fall off. Therefore, this case makes improvements here.

[0003] According to a photovoltaic junction box disclosed on the patent network (the authorization announcement number is: CN 202050373 U), it is described that "it includes a box body and a cable head rod cap. The box body is connected by an upper box body and a lower box body. The front sides of both sides of the lower box body are provided with cable head rods, the cable head rods are connected to the cable head rod caps, and a waterproof flower basket is arranged on the inner wall at the connection of the cable head rod and the cable head rod cap. The beneficial effect of the utility model is that the waterproof flower basket tightly blocks the gap and can prevent the photovoltaic cable from falling off easily."

[0004] According to the above content, the applicant believes that there are the following defects: The device has a design at the wiring part, but there is no design for the installation of the box body. When installing the box body, it still needs to be fixed by screws and nuts, and the installation efficiency is too slow. Moreover, there is also a lack of design for the heat dissipation of the internal components of the box body, and it cannot dissipate heat from the components inside the box, resulting in the risks of circuit falling off and component overheating and damage. Content of the Utility Model

[0005] The purpose of the utility model is to provide a photovoltaic junction box to solve the problems raised in the above background technique.

[0006] To achieve the above purpose, the utility model provides the following technical solution: A photovoltaic junction box, including a box body, a wiring board is fixedly connected to the rear side inside the box body, a hinge is fixedly connected to the bottom of the rear side of the box body, the other end of the hinge is fixedly connected to a bottom cover, a fixing mechanism is fixedly connected to the surface of the box body, a heat dissipation mechanism is fixedly connected to the inside of the box body, and a wiring port is opened at the rear side of the bottom cover;

[0007] The fixing mechanism includes an installation component and a closing component. The installation component is fixedly connected to the rear side of the box body, and the closing component is fixedly connected to the front side of the box body;

[0008] The heat dissipation mechanism includes a fan assembly and a motor assembly. The fan assembly is fixedly connected to the front side inside the box body, and the motor assembly is fixedly connected to the right side inside the box body.

[0009] Preferably, the installation assembly includes a rotating seat fixedly connected to the rear side of the box body. A bidirectional screw is rotatably connected inside the rotating seat. The right end of the bidirectional screw is fixedly connected to a knob. A threaded plate is threadedly connected to the surface of the bidirectional screw. A cross bar is inserted into the threaded plate. A clamping plate is fixedly connected to the rear side of the threaded plate. The box body is fixed on the photovoltaic frame through the installation assembly, and it is convenient for disassembly and assembly.

[0010] Preferably, the number of rotating seats is two, and the two rotating seats are correspondingly fixedly connected to the left and right sides of the rear side of the box body. The number of the threaded plates and the cross bars is two. The two threaded plates are correspondingly arranged on the left and right sides of the bidirectional screw. The two cross bars are correspondingly slidably connected to the top and bottom of the threaded plates. Both ends of the two cross bars are fixedly connected to the rear side of the box body. The clamping plate is driven by the bidirectional screw to clamp, so as to achieve the fixing effect of the box body.

[0011] Preferably, the closing assembly includes hinge seats fixedly connected to the left and right ends of the front side of the bottom cover. A vertical rod is hinged inside the hinge seats. A fitting seat is arranged at the rear side of the middle part of the vertical rod. The fitting seat is fixedly connected to the left and right ends of the front side of the box body. A clamping plate is slidably connected to the top of the vertical rod. The rear end of the clamping plate is clamped to the top of the box body. A spring is fixedly connected to the top of the clamping plate. The other end of the spring is fixedly connected to a round plate. The round plate is fixedly connected to the top end of the vertical rod. The bottom cover is fixed to the bottom of the box body through the closing assembly. While protecting the internal components, it is also convenient to open the bottom cover for circuit installation.

[0012] Preferably, the fan assembly includes a fixing frame fixedly connected to the front side of the box body. A bearing is fixedly connected inside the box body. A rotating shaft is fixedly connected to the inner side of the bearing. A first gear is fixedly connected to the rear end of the rotating shaft. A connecting roller is fixedly connected to the front end of the rotating shaft. Fan blades are fixedly connected to the surface of the connecting roller. A protective cover is arranged in front of the fan blades. The internal components of the box body are heat-dissipated through the fan assembly.

[0013] Preferably, the number of the fan blades is six, and the six fan blades are fixedly connected to the surface of the connecting roller at equal intervals. The rear side of the protective cover is fixedly connected to the middle part of the front side of the box body. The first gear meshes with the motor assembly. The protective cover protects the air outlet, preventing sundries from entering the box body through the air inlet.

[0014] Preferably, the motor assembly includes a motor base fixedly connected to the right side inside the box body. A servo motor is fixedly connected to the left side of the motor base. A second gear is fixedly connected to the left end of the servo motor. The second gear meshes with the first gear. The rear end of the servo motor is fixedly connected to the surface of the wiring board through a wire. The second gear is driven to rotate by the motor assembly to provide power for the fan assembly.

[0015] Compared with the prior art, the present utility model provides the following beneficial effects:

[0016] 1. Compared with the prior art, the device adds a mounting assembly at the rear side of the box body, facilitating the fixation of the box body and enabling quick fixation and removal of the box body. A closing assembly is added at the front side of the box body, which can fix the bottom cover to the box body to protect the internal components, and the bottom cover can also be quickly opened for wiring during wiring.

[0017] 2. The device also adds a heat dissipation mechanism inside the box body. The micro-motor drives the fan blades to rotate to dissipate heat from the components inside the box body, preventing damage to the components due to excessive temperature inside the box body when the box body is exposed to the sun for a long time. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model, the following will briefly introduce the drawings required for description in the embodiments. Obviously, the following drawings are only some embodiments of the present utility model. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts:

[0019] Figure 1 It is a front view schematic diagram of the structure of the present utility model;

[0020] Figure 2 It is a side cross-sectional view schematic diagram of the structure of the present utility model;

[0021] Figure 3 For Figure 2 It is a rear view schematic diagram of the enlarged structure at the mounting assembly in

[0022] Figure 4 For Figure 2 It is a front view schematic diagram of the enlarged structure at the closing assembly in

[0023] Figure 5 For Figure 2 It is a rear cross-sectional view schematic diagram of the enlarged structure at the fan assembly in

[0024] Figure 6 For Figure 2 It is a front cross-sectional view schematic diagram of the enlarged structure at the motor assembly in

[0025] In the figure: 1, box body; 2, junction board; 3, hinge; 4, bottom cover; 5, fixing mechanism; 51, mounting component; 511, rotating seat; 512, bidirectional screw; 513, knob; 514, threaded plate; 515, cross bar; 516, clamping plate; 52, closing component; 521, hinge seat; 522, vertical bar; 523, fitting seat; 524, clamping board; 525, round plate; 526, spring; 6, heat dissipation mechanism; 61, fan component; 611, fixing frame; 612, bearing; 613, rotating shaft; 614, first gear; 615, connecting roller; 616, fan blade; 617, protective cover; 62, motor component; 621, motor seat; 622, servo motor; 623, second gear; 7, wiring port. Detailed implementation manners

[0026] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0027] In the present invention, unless otherwise clearly defined and limited, the terms "installation", "connection", "connection", "fixation" and other terms should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two components or the interaction relationship between two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

[0028] The present invention provides the following technical solutions:

[0029] Embodiment 1

[0030] Please refer to Figures 1-4 , a photovoltaic junction box, including a box body 1, a junction board 2 fixedly connected to the rear side inside the box body 1, a hinge 3 fixedly connected to the bottom of the rear side of the box body 1, a bottom cover 4 fixedly connected to the other end of the hinge 3, a fixing mechanism 5 fixedly connected to the surface of the box body 1, a heat dissipation mechanism 6 fixedly connected to the inside of the box body 1, and a wiring port 7 opened on the rear side of the bottom cover 4;

[0031] The fixing mechanism 5 includes a mounting component 51 and a closing component 52. The mounting component 51 is fixedly connected to the rear side of the box body 1, and the closing component 52 is fixedly connected to the front side of the box body 1;

[0032] The mounting assembly 51 includes a rotating seat 511, which is fixedly connected to the rear side of the box body 1, a bidirectional screw 512 is rotatably connected inside the rotating seat 511, a knob 513 is fixedly connected to the right end of the bidirectional screw 512, a threaded plate 514 is threadedly connected to the surface of the bidirectional screw 512, a cross bar 515 is inserted inside the threaded plate 514, and a clamping plate 516 is fixedly connected to the rear side of the threaded plate 514;

[0033] There are two rotating seats 511, which are fixedly connected to the left and right sides of the rear side of the box body 1 respectively. There are two threaded plates 514 and two cross bars 515, which are respectively arranged on the left and right sides of the bidirectional screw 512. The two cross bars 515 are correspondingly slidably connected to the top and bottom of the threaded plates 514. Both ends of the two cross bars 515 are fixedly connected to the rear side of the box body 1.

[0034] The closing component 52 includes a hinge seat 521, which is fixedly connected to the left and right ends of the front side of the bottom cover 4. The hinge seat 521 is hinged with a vertical rod 522 inside the hinge seat 521. A fitting seat 523 is provided on the rear side of the middle part of the vertical rod 522. The rear side of the fitting seat 523 is fixedly connected to the left and right ends of the front side of the box body 1. The top of the vertical rod 522 is slidably connected to a clamping plate 524. The rear end of the clamping plate 524 is clamped on the top of the box body 1. The top of the clamping plate 524 is fixedly connected to a spring 526. The other end of the spring 526 is fixedly connected to a circular plate 525. The circular plate 525 is fixedly connected to the top of the vertical rod 522.

[0035] Further: when fixing the device, place a support between the two clamping plates 516, rotate the knob 513, and under the fixation of the rotating seat 511, the knob 513 drives the bidirectional screw 512 to rotate. Because the cross bar 515 restricts the threaded plate 514, the threaded plate 514 cannot rotate, and then the two threaded plates 514 move toward the middle on the surface of the bidirectional screw 512, driving the two clamping plates 516 to clamp on the support, and fix the device. After the device is fixed, connect the line, first pull the card plate upward 524, so that the rear end of the card plate 524 is separated from the card connection at the top of the box body 1, and the fixation is completed. The vertical rod 522 is rotated clockwise. Under the connection of the hinge 3, the bottom cover 4 is rotated, and the two wires are inserted from the wiring port 7 and connected to the wiring board 2. Then the bottom cover 4 and the vertical rod 522 are rotated back to their original positions in turn, and the card plate 524 is pulled upward to compress the spring 526. When the vertical rod 522 is in contact with the fitting seat 523, the card plate 524 is released, and the spring 526 drives the card plate 524 to be engaged with the top of the box body 1 to complete the fixation of the bottom cover 4.

[0036] Embodiment 2

[0037] See also Figures 5-6, and on the basis of the first embodiment, it is further obtained that the heat dissipation mechanism 6 includes a fan assembly 61 and a motor assembly 62. The fan assembly 61 is fixedly connected to the front side inside the box body 1, and the motor assembly 62 is fixedly connected to the right side inside the box body 1;

[0038] The fan assembly 61 includes a fixing frame 611. The fixing frame 611 is fixedly connected to the front side of the box body 1. A bearing 612 is fixedly connected inside the box body 1. A rotating shaft 613 is fixedly connected to the inner side of the bearing 612. A first gear 614 is fixedly connected to the rear end of the rotating shaft 613. A connecting roller 615 is fixedly connected to the front end of the rotating shaft 613. Blades 616 are fixedly connected to the surface of the connecting roller 615. A protective cover 617 is arranged on the front side of the blades 616;

[0039] The number of the blades 616 is six. The six blades 616 are fixedly connected to the surface of the connecting roller 615 at equal intervals. The rear side of the protective cover 617 is fixedly connected to the middle of the front side of the box body 1. The first gear 614 meshes with the motor assembly 62;

[0040] The motor assembly 62 includes a motor base 621. The motor base 621 is fixedly connected to the right side inside the box body 1. A servo motor 622 is fixedly connected to the left side of the motor base 621. A second gear 623 is fixedly connected to the left end of the servo motor 622. The second gear 623 meshes with the first gear 614. The rear end of the servo motor 622 is fixedly connected to the surface of the wiring board 2 through an electric wire.

[0041] Furthermore, when dissipating heat from the box body 1, the servo motor 622 is started. Under the fixation of the motor base 621, the servo motor 622 drives the first gear 623 to rotate. The first gear 623 drives the second gear 614 meshing with it to rotate. Under the fixation of the fixing frame 611 and the bearing 612, the second gear 614 drives the rotating shaft 613 to rotate. The blades 616 connected to the rotating shaft 613 through the connecting roller 615 also rotate accordingly, blowing air into the box body 1 for heat dissipation. The hot air escapes from the holes on the surface of the box body 1 to achieve the cooling effect. The design of the protective cover 617 can prevent sundries from entering the box body 1 and protect the internal circuits.

[0042] In the actual operation process, when this device is in use, first install the device between the photovoltaics. Place a support between the two clamping plates 516, and rotate the knob 513. Under the fixation of the rotating seat 511, the knob 513 drives the bidirectional screw 512 to rotate. Due to the restriction of the cross bar 515 on the threaded plate 514, the threaded plate 514 cannot rotate. Thus, the two threaded plates 514 move towards the middle on the surface of the bidirectional screw 512, driving the two clamping plates 516 to clamp on the support to fix the device. After fixing the device, connect the wires. First, pull up the clamping plate 524 to disengage the rear end of the clamping plate 524 from the clamping connection at the top of the box body 1 to end the fixation. Then, rotate the vertical rod 522 clockwise. Under the connection of the hinge 3, rotate the bottom cover 4. Insert the two wires from the wiring port 7 and connect them to the wiring board 2. Then, rotate the bottom cover 4 and the vertical rod 522 back to their original positions in sequence. Pull up the clamping plate 524 to compress the spring 526. When the vertical rod 522 fits with the fitting seat 523, release the clamping plate 524. The spring 526 drives the clamping plate 524 to be clamped with the top of the box body 1 to complete the fixation of the bottom cover 4. At high temperatures, start the servo motor 622. Under the fixation of the motor seat 621, the servo motor 622 drives the first gear 623 to rotate. The first gear 623 drives the second gear 614 meshing with it to rotate. Under the fixation of the fixing frame 611 and the bearing 612, the second gear 614 drives the rotating shaft 613 to rotate. The fan blade 616 connected to the rotating shaft 613 through the connecting roller 615 also rotates accordingly, blowing air into the box body 1 for heat dissipation. The hot air escapes from the holes on the surface of the box body 1 to achieve the cooling effect. The design of the protective cover 617 can prevent sundries from entering the box body 1 to protect the internal wires.

[0043] It should be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements but also includes other elements not explicitly listed, or further includes elements inherent to such process, method, article or device. Without further limitation, an element defined by the statement "including a..." does not exclude the existence of additional identical elements in the process, method, article or device including the said element.

Claims

1. A photovoltaic junction box, comprising a box body (1), characterized in that: A wiring board (2) is fixedly connected to the inner rear side of the box body (1). A hinge (3) is fixedly connected to the bottom of the rear side of the box body (1). The other end of the hinge (3) is fixedly connected to a bottom cover (4). A fixing mechanism (5) is fixedly connected to the surface of the box body (1). A heat dissipation mechanism (6) is fixedly connected to the inside of the box body (1). A wiring port (7) is provided at the rear side of the bottom cover (4). The fixing mechanism (5) includes a mounting component (51) and a closing component (52). The mounting component (51) is fixedly connected to the rear side of the box body (1). The closing component (52) is fixedly connected to the front side of the box body (1). The heat dissipation mechanism (6) includes a fan component (61) and a motor component (62). The fan component (61) is fixedly connected to the front side inside the box body (1). The motor component (62) is fixedly connected to the right side inside the box body (1).

2. A photovoltaic junction box according to claim 1, characterized in that: The mounting component (51) includes a rotating seat (511). The rotating seat (511) is fixedly connected to the rear side of the box body (1). A bidirectional screw rod (512) is rotatably connected inside the rotating seat (511). A knob (513) is fixedly connected to the right end of the bidirectional screw rod (512). A threaded plate (514) is threadedly connected to the surface of the bidirectional screw rod (512). A cross bar (515) is inserted into the threaded plate (514). A clamping plate (516) is fixedly connected to the rear side of the threaded plate (514).

3. The photovoltaic junction box according to claim 2, characterized in that: The number of the rotating seats (511) is two. The two rotating seats (511) are correspondingly fixedly connected to the left and right sides of the rear side of the box body (1). The number of the threaded plates (514) and the cross bars (515) is two. The two threaded plates (514) are correspondingly arranged on the left and right sides of the bidirectional screw rod (512). The two cross bars (515) are correspondingly slidably connected to the top and bottom of the threaded plates (514). Both ends of the two cross bars (515) are fixedly connected to the rear side of the box body (1).

4. A photovoltaic junction box according to claim 1, characterized in that: The closing component (52) includes a hinge seat (521). The hinge seat (521) is fixedly connected to the left and right ends of the front side of the bottom cover (4). A vertical rod (522) is hinged inside the hinge seat (521). A fitting seat (523) is arranged at the rear side of the middle of the vertical rod (522). The fitting seat (523) is fixedly connected to the left and right ends of the front side of the box body (1). A clamping plate (524) is slidably connected to the top of the vertical rod (522). The rear end of the clamping plate (524) is clamped to the top of the box body (1). A spring (526) is fixedly connected to the top of the clamping plate (524). The other end of the spring (526) is fixedly connected to a round plate (525). The round plate (525) is fixedly connected to the top end of the vertical rod (522).

5. A photovoltaic junction box according to claim 1, characterized in that: The fan assembly (61) includes a fixing bracket (611), the fixing bracket (611) is fixedly connected to the front side of the box body (1), a bearing (612) is fixedly connected inside the box body (1), a rotating shaft (613) is fixedly connected to the inner side of the bearing (612), a first gear (614) is fixedly connected to the rear end of the rotating shaft (613), a connecting roller (615) is fixedly connected to the front end of the rotating shaft (613), a fan blade (616) is fixedly connected to the surface of the connecting roller (615), and a protective cover (617) is arranged on the front side of the fan blade (616).

6. The photovoltaic junction box according to claim 5, characterized in that: The number of the fan blades (616) is six, and the six fan blades (616) are fixedly connected to the surface of the connecting roller (615) at equal intervals. The rear side of the protective cover (617) is fixedly connected to the middle of the front side of the box body (1), and the first gear (614) meshes with the motor assembly (62).

7. The photovoltaic junction box according to claim 1, wherein: The motor assembly (62) includes a motor base (621), the motor base (621) is fixedly connected to the right side inside the box body (1), a servo motor (622) is fixedly connected to the left side of the motor base (621), a second gear (623) is fixedly connected to the left end of the servo motor (622), the second gear (623) meshes with the first gear (614), and the rear end of the servo motor (622) is fixedly connected to the surface of the wiring board (2) through an electric wire.

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