Integrated junction box shell and integrated junction box

Abstract

The embodiment of the utility model provides an integrated junction box shell and an integrated junction box, the integrated junction box shell comprises a box body, the box body is internally provided with a partition plate, and the partition plate divides the internal space of the box body into a first unit chamber and a second unit chamber; a wire clamping groove is formed in the partition plate, and a cover plate is detachably buckled at the opening in the top of the box body; an exposed cable connector is arranged in the area, corresponding to one side wall of the second unit chamber, of the outer side of the box body, and the exposed cable connector is communicated with the second unit chamber. The interior of the box body is divided into the plurality of unit chambers through the partition plates, and the plurality of electric elements are respectively installed in the plurality of unit chambers, so that the plurality of electric elements are mutually separated in space, and the plurality of electric elements are integrated and installed in the same box body at the same time; the problem that more connectors and connecting wires are needed when a plurality of boxes are independently arranged in the prior art is effectively solved, the installation process is more convenient and faster, and the production cost can be effectively saved.

Description

Technical Field

[0001] The present application relates to the technical field of photovoltaic accessories, and in particular to an integrated junction box housing and an integrated junction box. Background Art

[0002] Photovoltaic power generation refers to the conversion of solar energy into electrical energy through photovoltaic panels. Specifically, the components of photovoltaic panels include: (1) Solar cells: This is the core component of photovoltaic panels and is composed of multiple solar cell cells. Cells are usually made of semiconductor materials such as silicon and can directly convert sunlight into electrical energy. (2) Glass covering layer: Solar cells are usually covered with a layer of special solar glass, which has high light transmittance and weather resistance and can protect the cells from the external environment. (3) Back sheet: There is usually a back sheet on the back of the solar cell to provide structural support and protect the back of the cell. (4) Frame: The frame is usually made of aluminum alloy to fix and support the solar panel and facilitate installation and fixing on a bracket or other surface. (5) Connecting wires and junction box: The connecting wires are used to connect the power output of the cell to the output port of the solar panel, and the junction box is used to protect and manage the wire connection. (6) Back sheet sealing: There is usually a sealing material between the back sheet and the frame to prevent water and protect the internal structure of the solar panel.

[0003] In the prior art, the output port of the junction box is connected to each power load or each energy storage unit through wires. In actual production, the more connection points there are, the more connectors are needed, which will result in a large number of connectors exposed to the outside world in the photovoltaic system. In addition, the energy storage unit also needs to be equipped with a corresponding packaging box. The more boxes there are, the more corresponding molds will be required in the production of photovoltaic companies, and the corresponding mold opening costs will be higher, which will make the product manufacturing cost higher, and the installation process of multiple boxes is also more cumbersome. Utility Model Content

[0004] The present application provides an integrated junction box housing and an integrated junction box, which integrate an energy storage unit into a photovoltaic junction box, and can effectively solve the technical problems in the prior art that when the energy storage power supply box and the photovoltaic junction box are set separately, a large number of connectors and connecting wires are required, and there is a high risk of failure and high cost.

[0005] The above-mentioned purpose of the present application is achieved through the following technical solutions:

[0006] In a first aspect, an embodiment of the present application provides an integrated junction box housing, comprising a rectangular box body, wherein a partition plate is fixedly arranged in the box body along its width direction, and the partition plate divides the internal space of the box body into a first unit chamber and a second unit chamber;

[0007] The partition plate is provided with a wire clamping groove, the wire clamping groove penetrates the partition plate along the thickness direction of the partition plate, and the connecting wire between the first unit chamber and the second unit chamber can be arranged in the wire clamping groove;

[0008] A cover plate is detachably fastened to the opening at the top of the box body;

[0009] An exposed cable connector is provided at an area on the outer side of the box body corresponding to one side wall of the second unit chamber, and the exposed cable connector is communicated with the second unit chamber.

[0010] In a possible implementation, limit grooves are respectively provided on two opposite sides of the inner length direction of the first unit chamber, and the two limit grooves are close to one of the side walls in the width direction of the first unit chamber, and a plurality of limit plates are evenly provided on the other side wall in the width direction of the first unit chamber; the groove width of the limit groove is equal to the thickness of the circuit substrate of the electrical component to be installed in the first unit chamber, and the distance between one end of the inner wall of the box body away from the adjacent side of the limit plate and the limit groove along the width direction of the box body is equal to the width of the electrical component to be installed in the first unit chamber.

[0011] In a possible implementation, the box body and the cover plate are connected via a snap assembly.

[0012] In a possible implementation manner, a rubber sealing ring matching the shape of the upper port of the box body is provided between the upper port of the box body and the cover plate.

[0013] In a possible implementation manner, the main body of the exposed cable connector and the box body are integrally injection molded.

[0014] In a possible implementation manner, a cable fixing groove is provided in the second unit chamber.

[0015] In a possible implementation, a plurality of hollow heat dissipation holes are provided on the bottom plate of the first unit chamber and / or the second unit chamber.

[0016] In a possible implementation, the number of the wire clamping slots on the partition plate is at least two, and there is a gap between two adjacent wire clamping slots.

[0017] In a possible implementation, the first unit chamber is an energy storage unit chamber, and the second unit chamber is a wiring unit chamber. The energy storage unit chamber is used to install an energy storage unit, and the wiring unit chamber is used to install a wiring module.

[0018] In a second aspect, an embodiment of the present application provides an integrated junction box, comprising the above-mentioned integrated junction box housing, an energy storage unit installed in the first unit chamber, and a junction module in the second unit chamber.

[0019] In summary, the present application includes at least one of the following beneficial technical effects:

[0020] The integrated junction box housing and the integrated junction box provided in the embodiment of the present application divide the internal space of the rectangular box into a first unit chamber and a second unit chamber by a partition. The first unit chamber and the second unit chamber can be used to place different electrical components respectively in actual use. For example, the electrical components in the photovoltaic junction box between the photovoltaic panel and the controller and the energy storage unit in the energy storage power supply box are respectively installed in the first unit chamber and the second unit chamber, which can save a box. The box body is divided into multiple unit chambers by a partition plate, and multiple electrical components are respectively installed in multiple unit chambers, which not only realizes the mutual separation of multiple electrical components in space, but also realizes the simultaneous integration and installation of multiple electrical components in the same box body, thereby effectively solving the problem of requiring more connectors and connecting wires when multiple boxes are set separately in the prior art, so that the mold opening cost of the corresponding box can also be effectively saved. In addition, when assembling photovoltaic equipment, the installation efficiency is also improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, a brief introduction will be given below to the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0022] Figure 1 It is a schematic diagram of the overall structure of the integrated junction box housing when the box body and the cover plate are in a buckled state provided by an embodiment of the present application;

[0023] Figure 2 It is a schematic diagram of the three-dimensional structure of a box body provided in one embodiment of the present application;

[0024] Figure 3 is a top view of a box body provided by an embodiment of the present application;

[0025] Figure 4 is an exploded view of an integrated junction box housing provided by an embodiment of the present application;

[0026] Figure 5 is a schematic structural diagram of a cover plate provided in one embodiment of the present application;

[0027] Figure 6 is a bottom view of a box body provided by an embodiment of the present application;

[0028] Figure 7 This is a state diagram of the integrated junction box housing provided by an embodiment of the present application when in use.

[0029] Figure 8 It is a schematic diagram of the structure after the energy storage unit is disassembled from the box body provided in one embodiment of the present application.

[0030] Explanation of the reference numerals: 1. Box body; 2. Partition plate; 3. First unit chamber; 4. Second unit chamber; 5. Wire clamping groove; 6. Cover plate; 7. Exposed cable connector; 8. Limiting groove; 9. Limiting plate; 10. Buckle assembly; 11. Rubber sealing ring; 12. Cable fixing groove; 13. Hollow heat dissipation hole; 14. Energy storage unit; 141. Circuit substrate; 15. Wiring module. DETAILED DESCRIPTION

[0031] In order to make the purpose, technical scheme and advantages of the embodiments of the present application clearer, the technical scheme in the embodiments of the present application is clearly and completely described below. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work also fall within the scope of protection of the present application.

[0032] In a solar power generation system, a controller is needed to control a multi-channel solar cell array to charge the battery and the battery to supply power to the solar inverter load. The use of the controller also requires electrical energy. The present application uses a separate photovoltaic panel to power the controller. A junction box for electrically connecting the two is provided between the photovoltaic panel and the controller to achieve the power supply effect of the photovoltaic panel on the controller. The controller is also connected to a drive motor, which is used to drive the photovoltaic panels in the photovoltaic array of the solar power generation system to rotate. Therefore, the above-mentioned separate photovoltaic panel also supplies power to the motor on the basis of supplying power to the controller. The motor usually works for a short time. In order to ensure the stability of the motor when working, the present application connects an energy storage power supply unit (such as a super capacitor) in series between the photovoltaic panel and the controller. The schemes of the various embodiments of the present application are described as follows.

[0033] like Figure 1 and Figure 2 As shown, the integrated junction box housing provided in the embodiment of the present application comprises a rectangular box body 1, in which a partition plate 2 is fixedly arranged along the width direction thereof, and the partition plate 2 divides the internal space of the box body 1 into a first unit chamber 3 and a second unit chamber 4;

[0034] The partition plate 2 is provided with a wire clamping groove 5, which penetrates the partition plate 2 along the thickness direction of the partition plate 2, and the connecting wire between the first unit chamber 3 and the second unit chamber 4 can be arranged in the wire clamping groove 5;

[0035] A cover plate 6 is detachably fastened to the opening at the top of the box body 1;

[0036] An exposed cable connector 7 is provided at an area on the outside of the box body 1 corresponding to one of the side walls of the second unit chamber 4 , and the exposed cable connector 7 is in communication with the second unit chamber 4 .

[0037] In the above embodiments, the box body 1 of the integrated junction box housing provided in the embodiments of the present application is a rectangular structure, which is convenient for production, processing and installation. The partition plate 2 arranged in the box body 1 can divide the interior thereof into two independent spaces, namely a first unit chamber 3 and a second unit chamber 4. These two spaces can be used to install different electrical components respectively in actual use.

[0038] In one possible implementation, Figure 7 and Figure 8 As shown, the integrated junction box housing provided in the embodiment of the present application can be applied to a photovoltaic junction box, wherein the first unit chamber 3 is an energy storage unit chamber, and the second unit chamber 4 is a wiring unit chamber. The energy storage unit chamber is used to install the energy storage unit 14, and the wiring unit chamber is used to install the wiring module 15. For example, when it is necessary to connect the photovoltaic panel and the controller, the energy storage unit 14 in the prior art energy storage power supply box and the wiring module 15 in the prior art wiring box between them can be installed in the first unit chamber 3 (energy storage unit chamber) and the second unit chamber 4 (wiring unit chamber) provided in the embodiment of the present application, respectively, so that the energy storage unit 14 and the wiring module 15 are integrated and installed in the same box body 1. Among them, Figure 7 The energy storage unit 14 is shown as a super capacitor. The specific structure of the super capacitor can be found in Figure 8 As shown, supercapacitors are prior art and will not be described in detail here.

[0039] In addition, the wire slot 5 on the partition plate 2 can be used to place wires that electrically connect two different devices in the box body 1, so that the overall layout of the box body 1 can be beautiful, and the cover plate 6 that can be detachably arranged at the top opening of the box body 1 can facilitate technicians to subsequently inspect and repair the equipment in the box body 1. The exposed cable connector 7 connected to the second unit chamber 4 is convenient for leading the cables of the internal equipment to the outside, so as to electrically connect with other photovoltaic equipment.

[0040] The integrated junction box housing provided in the embodiment of the present application divides the interior of the box body 1 into multiple unit chambers through a partition plate 2, which are respectively used to install different electrical components. Compared with the prior art, this can save the number of boxes used, and effectively solve the problem that when multiple boxes in the prior art are set up separately, more connectors and connecting wires are required, and the corresponding mold opening costs are reduced, and the production cost is reduced. In addition, both devices are installed in the same box body 1, which can simplify the installation steps and improve the installation efficiency. It should be noted that in some possible implementations, multiple partition plates 2 can also be set in the box body 1, and the multiple partition plates 2 can divide the box body 1 into at least three independent spaces. For example, two partition plates 2 can divide the box body 1 into three independent spaces.

[0041] In one possible implementation, Figure 2 and Figure 3 As shown, limiting grooves 8 are respectively provided on two opposite sides in the length direction of the first unit chamber 3, and the two limiting grooves 8 are close to one of the side walls in the width direction of the first unit chamber 3, and a plurality of limiting plates 9 are evenly provided on the other side wall in the width direction of the first unit chamber 3; the groove width of the limiting groove 8 is equal to the thickness of the circuit substrate of the electrical component to be installed in the first unit chamber 3, and the distance between the end of the limiting plate 9 away from the inner wall of the box body 1 on the adjacent side and the limiting groove 8 along the width direction of the box body 1 is equal to the width of the electrical component to be installed in the first unit chamber 3.

[0042] Specifically, the limiting grooves 8 and limiting plates 9 (wherein the number and spacing of the limiting grooves 8 and limiting plates 9 can be adaptively adjusted according to the specifications of the actual product) provided in the first unit chamber 3 in the above manner can play a positioning effect on the electrical components when the corresponding electrical components are installed in the first unit chamber 3. For example, the energy storage unit 14 can be quickly installed in place through the limiting grooves 8 and limiting plates 9 in the first unit chamber 3 during installation, and the two sides of the circuit substrate 141 of the energy storage unit 14 can be respectively clamped in the limiting grooves 8 on both sides (such as Figure 8 As shown), it is convenient for installers to quickly install electrical components in place, thereby improving installation efficiency.

[0043] In one possible implementation, Figure 1 As shown, the box body 1 and the cover plate 6 are connected via a snap assembly 10 .

[0044] In the present embodiment, the box body 1 and the cover plate 6 of the present application embodiment are connected by a snap-on assembly 10, which not only makes the installation process convenient and quick, but also when the staff needs to open the cover plate 6, they do not need to use tools, but can just pull open the cover plate 6 by hand, which effectively improves the convenience of using the integrated junction box housing in the present application embodiment.

[0045] In one possible implementation, Figure 4 As shown, a rubber sealing ring 11 matching the shape of the upper port of the box body 1 is provided between the upper port of the box body 1 and the cover plate 6 .

[0046] In the embodiment, when the cover plate 6 and the upper end of the box body 1 are fastened together through the snap assembly 10, the rubber sealing ring 11 between the cover plate 6 and the box body 1 will be squeezed and deformed. The deformed rubber sealing ring 11 will generate elastic force due to the deformation, thereby reducing the gap between the cover plate 6 and the box body 1 to seal it tightly, thereby effectively improving the sealing and waterproof effect of the box body 1.

[0047] like Figure 5As shown, an annular groove can be circumferentially arranged on the inner side of the cover plate 6 of the present application, so that the rubber sealing ring 11 can be embedded in the annular groove on the inner side of the cover plate 6, thereby facilitating and quickly combining the box body 1, the rubber sealing ring 11 and the cover plate 6 together.

[0048] In one possible implementation, Figure 1-Figure 4 As shown, the main body of the exposed cable connector 7 is integrally injection-molded with the box body 1 .

[0049] In this embodiment, the exposed cable connector 7 and the box body 1 are integrally injection molded during production, which can eliminate the gap at the connection between the exposed cable connector 7 and the box body 1, further improving the waterproof performance of the integrated photovoltaic junction box housing in this embodiment.

[0050] In one possible implementation, Figure 2 and Figure 3 As shown, a cable fixing groove 12 is provided in the second unit chamber 4 .

[0051] In this embodiment, the cable fixing groove 12 in the second unit chamber 4 can be used to fix the wires for electrical connection between the electronic components contained in the equipment installed therein, which can improve the stability of the relevant wires in the second unit chamber 4 and make the internal wire layout clear, convenient for installation and maintenance.

[0052] In one possible implementation, Figure 2 , Figure 3 and Figure 6 As shown, a plurality of hollow heat dissipation holes 13 are provided on the bottom plate of the first unit chamber 3 and / or the second unit chamber 4 .

[0053] In this embodiment, the box body 1 of the embodiment of the present application is glued on the periphery of the bottom plate with the hollow heat dissipation holes 13 during installation, and then fixedly installed on the bottom of the photovoltaic panel. When in use, the heat generated by the electrical components in the box body 1 can be conducted to the photovoltaic panel through the hollow heat dissipation holes 13 arranged on the bottom plate in the first unit chamber 3 and / or the second unit chamber 4, and the heat is dissipated through the photovoltaic panel using the principle of conduction heat dissipation, thereby ensuring that the operating temperature of the electrical components in the box body 1 is within a safe range. At the same time, the multiple hollow heat dissipation holes 13 arranged on the bottom plate of the box body 1 can also reduce the weight of the entire shell, thereby reducing the injection molding cost.

[0054] In one possible implementation, Figure 2 As shown, the number of the wire clamping grooves 5 on the partition plate 2 is at least two, and there is a gap between two adjacent wire clamping grooves 5 .

[0055] In this embodiment, when the electrical components in the first unit chamber 3 and the electrical components in the second unit chamber 4 are electrically connected, there will be input lines and output lines, so the number of wire clamping slots 5 on the partition plate 2 of the present application can be preferably two when designed. If there are special circumstances in actual use, and there are more than two electrical connection lines between the electrical components in the first unit chamber 3 and the electrical components in the second unit chamber 4, more wire clamping slots 5 can be adaptively provided on the partition plate 2. There are intervals between adjacent wire clamping slots 5 of the present application, so that after different electrical connection lines are clamped in different wire clamping slots 5, different electrical connection lines automatically have a certain safety distance between them, thereby avoiding interference between them when in use, making the internal layout and space of the box body 1 more reasonable.

[0056] like Figure 2 , Figure 3 and Figure 7 As shown, an embodiment of the present application further provides an integrated junction box, comprising an integrated junction box housing provided by any of the above embodiments, an energy storage unit 14 installed in the first unit chamber 3 and a junction module 15 in the second unit chamber 4 .

[0057] In the above embodiments, the integrated junction box of the above structure can simultaneously install the energy storage unit 14 and the junction module 15 therein. Since one of the box bodies 1 is omitted, this not only saves the corresponding mold opening costs, but also improves the work efficiency during actual installation.

[0058] When the integrated junction box provided by an embodiment of the present application is used, the energy storage unit 14 is first placed into the box body 1 along the limiting groove 8 and the limiting plate 9 in the first unit chamber 3, and then the wiring module 15 is installed in the second unit chamber 4 in the box body 1, and then the wiring module 15 and the energy storage unit 14 can be electrically connected, and then they are electrically connected to the photovoltaic panel and the controller respectively through the exposed cable connector 7 outside the box body 1, and after the connection is completed, the rubber sealing ring 11 is placed on the cover plate 6, and the cover plate 6 is pressed toward the upper port of the box body 1, and the buckle assembly 10 between the cover plate 6 and the box body 1 is used to connect them tightly. Finally, glue is applied around the bottom plate with hollow heat dissipation holes 13 on the box body 1, and the box body 1 is fixed under the photovoltaic panel.

[0059] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit it. Although the present application has been described in detail with reference to the aforementioned embodiments, ordinary technicians in the field should understand that they can still modify the technical solutions recorded in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. An integrated junction box housing, characterized in that: It comprises a rectangular box body (1), wherein a partition plate (2) is fixedly arranged inside the box body (1) along its width direction, and the partition plate (2) divides the internal space of the box body (1) into a first unit chamber (3) and a second unit chamber (4); The partition plate (2) is provided with a wire-holding groove (5), the wire-holding groove (5) penetrates the partition plate (2) along the thickness direction of the partition plate (2), and the connecting wire between the first unit chamber (3) and the second unit chamber (4) can be arranged in the wire-holding groove (5); A cover plate (6) is detachably fastened to the opening at the top of the box body (1); An exposed cable connector (7) is provided at an area on the outside of the box body (1) corresponding to one side wall of the second unit chamber (4), and the exposed cable connector (7) is in communication with the second unit chamber (4).

2. The integrated junction box housing according to claim 1, characterized in that: Limiting grooves (8) are respectively provided on two opposite sides in the length direction of the first unit chamber (3), and the two limiting grooves (8) are close to one of the side walls in the width direction of the first unit chamber (3), and a plurality of limiting plates (9) are evenly provided on the other side wall in the width direction of the first unit chamber (3); the groove width of the limiting groove (8) is equal to the thickness of the circuit substrate of the electrical component to be installed in the first unit chamber (3), and the distance between one end of the limiting plate (9) away from the inner wall of the box body (1) on the adjacent side and the limiting groove (8) along the width direction of the box body (1) is equal to the width of the electrical component to be installed in the first unit chamber (3).

3. The integrated junction box housing according to claim 1, characterized in that: The box body (1) and the cover plate (6) are connected via a snap assembly (10).

4. The integrated junction box housing according to claim 1, characterized in that: A rubber sealing ring (11) matching the shape of the upper port of the box body (1) is provided between the upper port of the box body (1) and the cover plate (6).

5. The integrated junction box housing according to claim 1, characterized in that: The main body of the exposed cable connector (7) and the box body (1) are integrally injection-molded.

6. The integrated junction box housing according to any one of claims 1 to 5, characterized in that: A cable fixing groove (12) is provided in the second unit chamber (4).

7. The integrated junction box housing according to any one of claims 1 to 5, characterized in that: A plurality of hollow heat dissipation holes (13) are provided on the bottom plate of the first unit chamber (3) and / or the second unit chamber (4).

8. The integrated junction box housing according to claim 7, characterized in that: The number of the wire clamping grooves (5) on the partition plate (2) is at least two, and there is a gap between two adjacent wire clamping grooves (5).

9. The integrated junction box housing according to any one of claims 1 to 5, characterized in that: The first unit chamber (3) is an energy storage unit chamber, and the second unit chamber (4) is a wiring unit chamber. The energy storage unit chamber is used to install an energy storage unit (14), and the wiring unit chamber is used to install a wiring module (15).

10. An integrated junction box, characterized in that: It comprises an integrated junction box housing as claimed in any one of claims 1 to 9, an energy storage unit (14) installed in the first unit chamber (3), and a junction module (15) in the second unit chamber (4).

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