Junction box and photovoltaic module

Abstract

The utility model discloses a junction box and a photovoltaic assembly. The junction box comprises a box body, a diode, a positive terminal, a negative terminal and an assembly, wherein the assembly comprises a mounting frame detachably connected with the inner side wall of the box body and a plurality of first barrier plates distributed on the mounting frame; the diode, the positive terminal and the negative terminal are detachably connected with the bottom surface of the box body; the positive terminal and the negative terminal are arranged at the two ends of the diode respectively and are electrically connected with the diode respectively; under the condition that the mounting frame, the positive terminal and the negative terminal are all connected with the box body, the edge of the positive terminal abuts against the at least two first barrier plates; the edge of the negative terminal is propped against the at least two first barrier plates; a groove structure is defined by the positive terminal and the at least two first barrier plates abutted against the positive terminal; a groove structure is defined by the negative terminal and the at least two first barrier plates which abut against the negative terminal. The structure can improve the reliability of connection between the junction box and the photovoltaic module.

Description

Technical Field

[0001] This utility model relates to a junction box and a photovoltaic module. Background Technology

[0002] In photovoltaic (PV) modules, the junction box is a crucial component, serving as a bridge for connecting PV modules in series or connecting them to external power lines. Currently, junction boxes are primarily connected to the busbars of the PV modules via a planar welding platform using solder or solder blocks. However, due to the planar structure of the welding platform, solder material is prone to leakage during the welding process, leading to a significant risk of incomplete solder joints between the planar welding platform and the busbars. Utility Model Content

[0003] In view of this, the present invention provides a junction box and a photovoltaic module, which can effectively avoid the risk of poor soldering between the positive and negative terminals and the busbar leads, and can improve the reliability of the connection between the junction box and the photovoltaic module.

[0004] To solve the above-mentioned technical problems, this utility model provides the following technical solution:

[0005] In a first aspect, embodiments of the present invention provide a junction box, comprising: a box body, a diode, a positive terminal, a negative terminal, and an assembly, wherein...

[0006] The assembly includes: a mounting frame detachably connected to the inner sidewall of the box body and a plurality of first baffles distributed on the mounting frame;

[0007] The diode, the positive terminal, and the negative terminal are detachably connected to the bottom surface of the housing;

[0008] The positive terminal and the negative terminal are respectively located at the two ends of the diode and are electrically connected to the diode respectively;

[0009] With the mounting frame, the positive terminal, and the negative terminal all connected to the housing, the edge of the positive terminal abuts against at least two of the first blocking plates; the edge of the negative terminal abuts against at least two of the first blocking plates.

[0010] The positive terminal and the at least two first blocking plates that abut against it form a groove structure;

[0011] The negative end and at least two of the first blocking plates that abut against it form a groove structure.

[0012] Secondly, this utility model embodiment provides a junction box, comprising: a box body, a diode, a positive terminal, a negative terminal, and two second blocking plates, wherein...

[0013] The diode, the positive terminal, and the negative terminal are detachably connected to the bottom surface of the housing;

[0014] The second baffle plate is an integral structure with the bottom surface of the box body;

[0015] The positive terminal and the negative terminal are respectively located at the two ends of the diode and are electrically connected to the diode respectively;

[0016] When the positive terminal is connected to the housing, the edge of the positive terminal abuts against a second baffle plate, forming a groove structure;

[0017] When the negative terminal is connected to the housing, the edge of the negative terminal abuts against another second baffle plate, forming a groove structure.

[0018] Thirdly, this utility model embodiment provides a junction box, including: a box body, a diode, a positive terminal, a negative terminal, and two third blocking plates, wherein...

[0019] The third baffle plate is an integral structure with the bottom surface of the box;

[0020] The diode, the positive terminal, and the negative terminal are detachably connected to the bottom surface of the housing;

[0021] The positive terminal and the negative terminal are respectively located at the two ends of the diode and are electrically connected to the diode respectively;

[0022] The edge of the positive terminal is provided with a first guide hole, which matches one of the third blocking plates;

[0023] The negative terminal is provided with a second guide hole at its edge, and the second guide hole matches another of the third blocking plates;

[0024] When the positive terminal is connected to the housing, a third blocking plate is embedded in the first guide hole and forms a groove structure with the positive terminal.

[0025] When the negative terminal is connected to the housing, another third blocking plate is embedded in the second guide hole and forms a groove structure with the negative terminal.

[0026] Fourthly, this utility model embodiment provides a photovoltaic module, including: a photoelectric conversion module body and a junction box provided in the first, second, or third aspect embodiment, wherein...

[0027] The two busbar leads of the photoelectric conversion component body are electrically connected to the positive and negative terminals of the junction box, respectively.

[0028] The first aspect of the above-mentioned utility model has the following advantages or beneficial effects:

[0029] The junction box provided in this embodiment of the utility model has a groove structure formed by a baffle plate and the positive or negative terminal. Specifically, the assembly includes a first baffle plate forming a groove structure with the positive or negative terminal, a second baffle plate integral with the box body forming a groove structure with the positive or negative terminal, or a third baffle plate integral with the box body. The groove structure is embedded in the first guide hole of the positive terminal or the second guide hole of the negative terminal. This groove structure can prevent the molten solder from overflowing during the soldering process, so that enough solder remains between the positive terminal and the busbar lead and between the negative terminal and the busbar lead. This avoids the risk of poor soldering between the conductive sheet of the planar structure and the busbar, and can improve the reliability of the connection between the junction box and the photovoltaic module. Attached Figure Description

[0030] Figure 1 This is a partial structural schematic diagram of the assembly components included in the junction box of the first structure according to the present utility model embodiment;

[0031] Figure 2 This is a schematic diagram of the junction box according to the first structure of the present utility model;

[0032] Figure 3 This is a schematic diagram of the structure of the junction box according to the second structure of the present utility model.

[0033] Figure 4 This is a schematic diagram of the junction box according to the second structure of the present utility model;

[0034] Figure 5 This is a schematic diagram of the conductive sheet included in the junction box of the third structure according to an embodiment of the present utility model;

[0035] Figure 6 This is a schematic diagram of the conductive sheet included in the junction box of the third structure according to an embodiment of the present utility model;

[0036] Figure 7 This is a schematic diagram of the structure of the junction box according to the third structure of the present utility model.

[0037] The attached figures are labeled as follows:

[0038] 10-Box; 20-Diode; 30-Positive terminal; 40-Negative terminal; 50-Assembly; 51-Mounting frame; 52-First blocking plate; 521-L-shaped connecting leg; 522-Connecting plate; 53-Second blocking plate; 54-Third blocking plate. Detailed Implementation

[0039] The detachable connection between one structure and another in this utility model embodiment generally means that after one structure is installed on another structure, the one structure is fixed relative to the other structure, and after disassembly, the one structure can be separated from the other structure. For example, the detachable connection can be achieved by providing matching mounting holes for the two structures, and detaching the two structures by screwing them into the mounting holes; or by providing matching mounting holes and mounting posts for the two structures, and detaching the two structures by attaching the mounting posts to the mounting holes; or by providing a buckle for one structure and a matching slot for the other structure, fixing the two structures together by attaching the buckle to the slot, and separating the two structures after removing the buckle from the slot.

[0040] The two structures involved in this utility model are generally considered to be an integral structure, meaning that the two structures are made of the same material and formed by casting in a mold or stamping sheet metal in one go.

[0041] It is worth noting that the terms "first," "second," and "third" mentioned in the embodiments of this utility model are used to distinguish different functional components or functional components with the same function on different structures, and are not used to sort or number the functional components. For example, the first, second, and third blocking plates are used to distinguish plate-shaped functional components belonging to different junction box structures that can form a groove structure with the positive or negative terminal to block the flow of molten solder.

[0042] The bottom surface of the box 10 involved in this utility model embodiment generally refers to the part that is in contact with the photovoltaic module after the junction box is installed on the photovoltaic module.

[0043] This utility model embodiment improves the structure of the junction box to solve the problem of poor soldering that easily occurs in the junction box, and can improve the reliability of the connection between the junction box and the photovoltaic module.

[0044] It is worth noting that the three junction box structures involved in this utility model share a common and innovative structure (i.e., a common innovative structure for all three junction box structures: introducing a baffle plate into the junction box, which abuts against the positive or negative terminal to form a groove structure). The beneficial effect of this structure is that the baffle plate blocks the flow of molten solder, preventing cold solder joints and improving the reliability of the connection between the junction box and the photovoltaic module. The main difference between the three junction box structures provided in this utility model embodiment lies in the structure of the introduced baffle plate.

[0045] The specific structures of the junction boxes with the three structures provided in the embodiments of this utility model will be described in detail below.

[0046] in, Figure 1 and Figure 2 This diagram shows a partial structural schematic of a junction box with a first structure provided in an embodiment of the present invention; Figure 3 and Figure 4 This diagram shows a partial structural schematic of the junction box with the second structure provided in this embodiment of the present invention; Figures 5 to 7 This diagram shows a partial structural schematic of the junction box with the third structure provided in this embodiment of the present invention.

[0047] Specifically, such as Figure 1 and Figure 2 As shown, the junction box with the first structure provided in this embodiment of the present invention may include: a box body 10, a diode 20, a positive terminal 30, a negative terminal 40, and an assembly 50, wherein,

[0048] like Figure 1 As shown, the assembly 50 includes: a mounting frame 51 detachably connected to the inner sidewall of the housing 10 and a plurality of first baffles 52 distributed on the mounting frame 51;

[0049] Diode 20, positive terminal 30, and negative terminal 40 are detachably connected to the bottom surface of housing 10;

[0050] The positive terminal 30 and the negative terminal 40 are respectively located at the two ends of the diode 20 and are electrically connected to the diode 20 respectively;

[0051] With the mounting frame 51, positive terminal 30, and negative terminal 40 all connected to the housing 10, the edge of the positive terminal 30 abuts against at least two first blocking plates 52; the edge of the negative terminal 40 abuts against at least two first blocking plates 52.

[0052] The positive end 30 and at least two first blocking plates 52 that abut against it form a groove structure;

[0053] The negative end 40 and at least two first blocking plates 52 that abut against it form a groove structure.

[0054] Understandably, the diode 20, the positive terminal 30, and the negative terminal 40 provided in the embodiments of the present utility model are part of a conductive sheet. The positive terminal 30 and the negative terminal 40 are electrically connected to the positive electrode and the negative electrode of the diode 20 respectively. Additionally, as Figure 5 shown in the conductive sheet, generally speaking, the conductive sheet may further include: an outlet through-hole 42 for the insertion of the bus bar lead-out wire and a fixing hole 70 for fixing the conductive sheet, wherein the outlet through-hole 42 is used to lead out the bus bar lead-out wire. Correspondingly, a fixing post (not marked in the figure) matching the fixing hole 70 is provided on the box body 10. By sleeving the fixing hole 70 on the corresponding fixing post, the conductive sheet is installed on the bottom surface of the box body 10, thereby realizing the detachable connection of the diode 20, the positive terminal 30, and the negative terminal 40 to the bottom surface of the box body 10.

[0055] Among them, the mounting frame 51 in the wiring box of the first structure is generally of a "mouth" - shaped structure. Through the "mouth" - shaped mounting frame 51, the mounting frame is made more stable and can better support the first baffle 52.

[0056] Preferably, the mounting frame 51 is engaged with the box body 10, and the outer side wall of the mounting frame 51 is in contact with the inner side wall of the box body 10. The engagement between the mounting frame 51 and the box body 10 can be achieved by the matching of a groove and a protrusion, or by the cooperation of a buckle and a slot. By the contact between the outer side wall of the mounting frame 51 and the inner side wall of the box body 10, the installation stability of the mounting frame 51 can be further improved to ensure that the first baffle 52 can stably abut against the positive terminal 30 or the negative terminal 40, thereby better blocking the overflow of molten tin.

[0057] More preferably, as Figure 1 and Figure 2 shown, the number of the first baffles 52 is four; the two first baffles 52 abutting against the edge of the positive terminal 30 are arranged oppositely; the two first baffles 52 abutting against the edge of the negative terminal 40 are arranged oppositely. By the two first baffles 52 arranged oppositely corresponding to the positive terminal 30 and the two first baffles 52 arranged oppositely corresponding to the negative terminal 40, while blocking the tin overflow, the tin flowing between the bus bar lead - out wire and the first baffle can be blocked back to the surface of the bus bar lead - out wire, so as to better stabilize the bus bar lead - out wire, thereby ensuring the stable connection between the bus bar lead - out wire and the positive terminal 30 and the negative terminal 40.

[0058] Furthermore, in order to further improve the stability of the first baffle 52, the first baffle 52 may include: two L - shaped connecting legs 521 and a joint plate 522, wherein,

[0059] One end of each of the two L-shaped connecting legs 521 is fixedly connected to the mounting frame 51, and the two L-shaped connecting legs 521 are parallel to each other;

[0060] The other ends of the two L-shaped connecting legs 521 are fixedly connected to the connecting plate 522;

[0061] The mating plate 522 abuts against the edge of the positive terminal 30 or the edge of the negative terminal 40.

[0062] The outer side of the L-shaped connecting leg 521 is fitted against the inner side of the box 10.

[0063] By having the outer side of the L-shaped connecting leg 521 fit against the inner side of the housing 10, the L-shaped connecting leg 521 can resist the impact of solder flow with the support of the housing 10, thus preventing the bonding plate 522 from shifting.

[0064] The first structure of the junction box provided by this utility model can be obtained by adding the aforementioned assembly 50 to an existing junction box. Therefore, the first structure of the junction box provided by this utility model can utilize existing junction boxes, effectively controlling the cost of the new structure.

[0065] In response to the above Figure 1 and Figure 2 The first structure of the junction box provided is that the junction box forms a groove structure with the positive or negative terminal through a first baffle plate. This groove structure can prevent the molten solder from overflowing during the soldering process, so that enough solder remains between the positive terminal and the busbar lead and between the negative terminal and the busbar lead. This avoids the risk of poor soldering between the conductive sheet of the planar structure and the busbar, and can improve the reliability of the connection between the junction box and the photovoltaic module.

[0066] Furthermore, such as Figure 3 and Figure 4 As shown, the junction box with the second structure provided in this embodiment of the present invention may include: a box body 10, a diode 20, a positive terminal 30, a negative terminal 40, and two second blocking plates 53, wherein,

[0067] Diode 20, positive terminal 30, and negative terminal 40 are detachably connected to the bottom surface of housing 10;

[0068] The second baffle plate 53 is an integral structure with the bottom surface of the box body 10;

[0069] The positive terminal 30 and the negative terminal 40 are respectively located at the two ends of the diode 20 and are electrically connected to the diode 20 respectively;

[0070] When the positive terminal 30 is connected to the housing 10, the edge of the positive terminal 30 abuts against a second baffle plate 53, forming a groove structure.

[0071] When the negative terminal 40 is connected to the housing 10, the edge of the negative terminal 40 abuts against another second baffle plate 53, forming a groove structure.

[0072] By setting the second baffle plate 53 as an integral structure with the bottom surface of the housing 10, it can be ensured that the second baffle plate 53 can form a stable contact with the edge of the positive terminal 30 or the edge of the negative terminal 40, so as to effectively block solder overflow.

[0073] Understandably, in the second structure of this junction box, diode 20, positive terminal 30, and negative terminal 40 are part of a conductive sheet. The positive terminal 30 and negative terminal 40 are electrically connected to the positive and negative terminals of diode 20, respectively. Additionally, as... Figure 5 The conductive sheet shown generally includes: a through hole 42 for the busbar lead wire to pass through and a fixing hole 70 for fixing the conductive sheet, wherein the through hole 42 is used to lead out the busbar lead wire. Correspondingly, a fixing post (not shown in the figure) matching the fixing hole 70 is provided on the housing 10. By fitting the fixing hole 70 onto the corresponding fixing post, the conductive sheet is installed on the bottom surface of the housing 10, thereby realizing the detachable connection between the diode 20, the positive terminal 30 and the negative terminal 40 and the bottom surface of the housing 10.

[0074] The groove structure formed by the edge of the positive terminal 30 abutting against a second blocking plate 53 is a U-shaped structure; the groove structure formed by the edge of the negative terminal 40 abutting against another second blocking plate 53 is also a U-shaped structure. Alternatively, the groove structure can be formed by the second blocking plate 53 consisting of two parts located on either side of the positive terminal 30 or the negative terminal 40, with these two parts forming the groove structure. That is, the second blocking plate 53 can also be composed of plate structures located on either side of the positive or negative terminal (i.e., the two plate structures constituting the second blocking plate 53 can be separate structures). For example, as shown... Figure 3 and Figure 4 As shown, the second blocking plate 53 corresponding to the positive terminal 30 forms a U-shaped structure, and the two parts of the second blocking plate 53 corresponding to the negative terminal 40 are arranged opposite to each other on both sides of the negative terminal 40.

[0075] It is worth noting that the second structure of the junction box provided by this utility model can be obtained by adding the second blocking plate 53 to the box body 10 based on the existing conductive sheet. Therefore, the second structure of the junction box provided by this utility model can utilize the existing conductive sheet, effectively controlling the cost of the new structure.

[0076] against Figure 3 and Figure 4The junction box with the second structure shown has a groove structure formed by the second baffle plate 53 integrated with the box body and the positive terminal 30 or the negative terminal 40. This groove structure can prevent the molten solder from overflowing during the soldering process, so that enough solder remains between the positive terminal 30 and the busbar lead and between the negative terminal 40 and the busbar lead. This avoids the risk of poor soldering between the conductive sheet of the planar structure and the busbar, and can improve the reliability of the connection between the junction box and the photovoltaic module.

[0077] Furthermore, such as Figures 5 to 7 As shown, the junction box with the third structure provided in this embodiment of the present invention may include: a box body 10, a diode 20, a positive terminal 30, a negative terminal 40, and two third blocking plates 54, wherein,

[0078] The third baffle plate 54 is an integral structure with the bottom surface of the box body 10;

[0079] Diode 20, positive terminal 30, and negative terminal 40 are detachably connected to the bottom surface of housing 10;

[0080] The positive terminal 30 and the negative terminal 40 are respectively located at the two ends of the diode 20 and are electrically connected to the diode 20 respectively;

[0081] The edge of the positive terminal 30 is provided with a first guide hole 31, which matches a third baffle plate 54.

[0082] The edge of the negative terminal 40 is provided with a second guide hole 41, which matches another third blocking plate 54;

[0083] When the positive terminal 30 is connected to the housing 10, a third baffle plate 54 is embedded in the first guide hole 31 and forms a groove structure with the positive terminal 30.

[0084] When the negative terminal 40 is connected to the housing 10, another third blocking plate 54 is embedded in the second guide hole 41 and forms a groove structure with the negative terminal 40.

[0085] Understandably, in the third structure of this junction box, diode 20, positive terminal 30, and negative terminal 40 are part of a conductive sheet. The positive terminal 30 and negative terminal 40 are electrically connected to the positive and negative terminals of diode 20, respectively. Additionally, as... Figure 5The conductive sheet shown generally includes: a through hole 42 for the busbar lead wire to pass through and a fixing hole 70 for fixing the conductive sheet, wherein the through hole 42 is used to lead out the busbar lead wire. Correspondingly, a fixing post (not shown in the figure) matching the fixing hole 70 is provided on the housing 10. By fitting the fixing hole 70 onto the corresponding fixing post, the conductive sheet is installed on the bottom surface of the housing 10, thereby realizing the detachable connection between the diode 20, the positive terminal 30 and the negative terminal 40 and the bottom surface of the housing 10.

[0086] Furthermore, in this third type of junction box, the third blocking plate 54 can be better secured by providing a first guide hole 31 on the edge of the positive terminal 30 and a second guide hole 41 on the edge of the negative terminal 40. The first guide hole 31 and the second guide hole 41 can be formed by stamping existing conductive sheets, thus effectively controlling the production cost of the junction box.

[0087] For the assembly method of the junction box with the third structure: the positive terminal 30, negative terminal 40 and diode 20 of the conductive sheet are respectively aligned with the corresponding positions on the bottom of the box body 10, and the fixing holes 70 of the positive terminal 30 and the fixing holes of the negative terminal 40 are respectively aligned with the fixing posts on the box body 10. Correspondingly, the first guide hole 31 on the positive terminal 30 and the second guide hole 41 on the negative terminal 40 are aligned with the third blocking plate 54 set on the box body 10. The conductive sheet is installed in one step by pressing with external force, and a groove structure is formed at the same time, which facilitates the assembly of the junction box.

[0088] It is worth noting that, Figure 6 and Figure 7 An example is provided where the third blocking plate 54 is integrally connected to the fixing post to form a U-shaped structure. Alternatively, the third blocking plate 54 can also be considered as composed of multiple plate structures (plate structures located on both sides of the positive or negative terminal and a plate structure located between the two fixing posts). Furthermore, the third blocking plate 54 can also be composed of plate structures located on both sides of the positive or negative terminal (i.e., the two plate structures constituting the third blocking plate 54 can be separate structures).

[0089] For this third type of junction box, a groove structure is formed by embedding a third baffle plate 54, which is integral with the box body, into the first guide hole of the positive terminal 30 or the second guide hole of the negative terminal 40. This groove structure can prevent the molten solder from overflowing during the soldering process, so that enough solder remains between the positive terminal 30 and the busbar lead and between the negative terminal 40 and the busbar lead. This avoids the risk of poor soldering between the conductive sheet of the planar structure and the busbar, and can improve the reliability of the connection between the junction box and the photovoltaic module.

[0090] For the junction boxes with the first, second, and third structures mentioned above, even if the solder spreads to the surrounding area, it will return to the top of the busbar connection line under the obstruction of the baffle, covering the edge of the busbar connection line and even the connection part between the busbar connection line and the electrode terminal. This can effectively prevent solder overflow, ensure full contact between the solder and the busbar, improve the welding quality, and further reduce the risk of cold solder joints.

[0091] Furthermore, for the junction boxes of the second and third structures mentioned above, the materials used for the second baffle plate 53 and the third baffle plate 54 can be the same as the box material, such as PPO, or high-temperature plastics such as PA, PPS, and LCP. They are molded together with plastic parts to form an integral structure with the box body 10.

[0092] It is worth noting that the positive terminal 30 and the negative terminal 40 in the junction boxes provided in the above embodiments can both be planar structures.

[0093] Furthermore, this utility model embodiment provides a photovoltaic module. Specifically, the photovoltaic module may include: a photoelectric conversion module body and a junction box provided in any of the above embodiments, wherein two busbar leads of the photoelectric conversion module body are electrically connected to the positive and negative terminals of the junction box, respectively.

[0094] It is worth noting that the photoelectric conversion component body involved in this utility model is generally a component laminate containing a battery string with connected battery cells, an encapsulation layer, a cover plate and a back plate. It is the core component for realizing photoelectric conversion, and the junction box is a bridge for establishing electrical connections between core components or between core components and external components.

[0095] The above steps are provided only to help understand the method, structure, and core idea of ​​this utility model. For those skilled in the art, various improvements and modifications can be made to this utility model without departing from its principles, and these improvements and modifications also fall within the scope of protection of the claims of this utility model.

Claims

1. A junction box, characterized in that, include: The assembly includes a housing (10), a diode (20), a positive terminal (30), a negative terminal (40), and an assembly (50). The assembly (50) includes: a mounting frame (51) detachably connected to the inner sidewall of the housing (10) and a plurality of first baffles (52) distributed on the mounting frame (51). The diode (20), the positive terminal (30), and the negative terminal (40) are detachably connected to the bottom surface of the housing (10); The positive terminal (30) and the negative terminal (40) are respectively disposed at both ends of the diode (20) and are electrically connected to the diode (20) respectively; When the mounting frame (51), the positive terminal (30) and the negative terminal (40) are all connected to the housing (10), the edge of the positive terminal (30) abuts against at least two of the first blocking plates (52); the edge of the negative terminal (40) abuts against at least two of the first blocking plates (52); The positive end (30) and at least two of the first blocking plates (52) that it abuts form a groove structure; The negative end (40) and at least two of the first blocking plates (52) that it abuts form a groove structure.

2. The junction box according to claim 1, characterized in that, The mounting frame (51) engages with the box body (10), and the outer side wall of the mounting frame (51) is in contact with the inner side wall of the box body (10).

3. The junction box according to claim 1, characterized in that, The number of the first baffles (52) is four; The two first blocking plates (52) that abut against the edge of the positive end (30) are arranged opposite to each other; The two first blocking plates (52) that abut against the edge of the negative end (40) are arranged opposite each other.

4. The junction box according to any one of claims 1 to 3, characterized in that, The first baffle plate (52) includes: two L-shaped connecting legs (521) and a connecting plate (522), wherein, One end of each of the two L-shaped connecting legs (521) is fixedly connected to the mounting frame (51), and the two L-shaped connecting legs (521) are parallel to each other; The other ends of the two L-shaped connecting legs (521) are fixedly connected to the connecting plate (522); The bonding plate (522) abuts against the edge of the positive end (30) or the edge of the negative end (40).

5. The junction box according to claim 4, characterized in that, The outer side of the L-shaped connecting leg (521) is in contact with the inner side of the box (10).

6. The junction box according to any one of claims 1 to 3 and 5, characterized in that, The first blocking plate (52) and the mounting frame (51) are an integral structure.

7. A junction box, characterized in that, include: The enclosure (10), diode (20), positive terminal (30), negative terminal (40), and two second blocking plates (53) are included. The diode (20), the positive terminal (30), and the negative terminal (40) are detachably connected to the bottom surface of the housing (10); The second baffle plate (53) and the bottom surface of the box body (10) are an integral structure; The positive terminal (30) and the negative terminal (40) are respectively disposed at both ends of the diode (20) and are electrically connected to the diode (20) respectively; When the positive terminal (30) is connected to the housing (10), the edge of the positive terminal (30) abuts against a second baffle plate (53) to form a groove structure; When the negative terminal (40) is connected to the housing (10), the edge of the negative terminal (40) abuts against another second baffle plate (53) to form a groove structure.

8. The junction box according to claim 7, characterized in that, The groove structure formed by the edge of the positive end (30) abutting against a second baffle plate (53) is a U-shaped structure; The groove structure formed by the edge of the negative end (40) abutting against another second baffle plate (53) is a U-shaped structure.

9. A junction box, characterized in that, include: The enclosure (10), diode (20), positive terminal (30), negative terminal (40), and two third blocking plates (54) are included. The third baffle plate (54) and the bottom surface of the box body (10) are an integral structure; The diode (20), the positive terminal (30), and the negative terminal (40) are detachably connected to the bottom surface of the housing (10); The positive terminal (30) and the negative terminal (40) are respectively disposed at both ends of the diode (20) and are electrically connected to the diode (20) respectively; The edge of the positive terminal (30) is provided with a first guide hole (31), which matches a third blocking plate (54); The negative end (40) is provided with a second guide hole (41) at its edge, which matches the other third blocking plate (54); When the positive terminal (30) is connected to the housing (10), a third blocking plate (54) is embedded in the first guide hole (31) and forms a groove structure with the positive terminal (30); When the negative terminal (40) is connected to the housing (10), another third blocking plate (54) is embedded in the second guide hole (41) and forms a groove structure with the negative terminal (40).

10. A photovoltaic module, characterized in that, include: The photoelectric conversion component body and the junction box according to any one of claims 1 to 9, wherein... The two busbar leads of the photoelectric conversion component body are electrically connected to the positive and negative terminals of the junction box, respectively.

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