Diode detachable junction box and photovoltaic system

Abstract

The utility model discloses a diode detachable junction box and a photovoltaic system, comprising a junction box body, the junction box body is internally provided with a first conductor and a second conductor, the junction box also comprises an extension portion and a diode, the diode comprises a diode body, and a first pin and a second pin connected on the diode body, the diode is arranged in the extension part, the extension part is detachably connected with the junction box body, the first pin is electrically connected with the first conductor, the second pin is electrically connected with the second conductor, the diode is arranged in the extension part, and the extension part is detachably connected with the junction box body. Therefore, when the diode is damaged, the extension part can be directly detached, and the diode can be replaced by a new extension part.

Description

TECHNICAL FIELD

[0001] The utility model relates to photovoltaic junction box field, especially in a diode detachable junction box and photovoltaic system. BACKGROUND

[0002] Photovoltaic bypass protection module is an important component in photovoltaic module, and is mainly used for improving reliability and efficiency of photovoltaic system.When the current of the photovoltaic cell string is not matched due to the shielding, damage or performance degradation of a certain cell, the bypass module can provide a low-resistance bypass path for the cell, so that the current bypasses the fault cell and continues to flow, thereby reducing the hot spot effect and maintaining the power generation efficiency of the entire photovoltaic module. The bypass protection module is composed of a diode and a conductive body electrically connected with the diode.

[0003] At present, the bypass protection module is mostly installed in the junction box, and when applied, the insulating sealant needs to be poured into the box body to avoid the influence of dust and water vapor on the bypass protection module in the junction box. However, the diode in the box body is easy to generate a large amount of heat in the box body during normal operation, which may be damaged. Once damaged, it cannot be replaced, and the solar cell string connected in parallel with it cannot play a bypass protection role. UTILITY MODEL CONTENT

[0004] The utility model solves the technical problem to provide a diode detachable junction box which can conveniently replace the damaged diode.

[0005] The utility model solves the technical problem by adopting the following technical scheme: a diode detachable junction box, comprising a junction box body, a first conductive body and a second conductive body are arranged in the junction box body, further comprising an extension part and a diode, the diode comprises a diode body, a first pin and a second pin connected to the diode body, the diode is installed in the extension part, the extension part is detachably connected with the junction box body, the first pin is electrically connected with the first conductive body, and the second pin is electrically connected with the second conductive body.

[0006] Further, the junction box body comprises a box body and a box cover, the box body comprises a side wall and a bottom wall, and the extension part is detachably fixedly connected with the side wall.

[0007] Further, the side wall is provided with a first through hole and a second through hole penetrating through the side wall, the first pin extends into the first through hole and is electrically connected with the first conductive body, and the second pin extends into the second through hole and is electrically connected with the second conductive body.

[0008] Further, the first diode connecting part and the second diode connecting part are hollow sleeve-shaped conductive bodies or pin-shaped conductive bodies, the first pin and the second pin are pin-shaped conductive bodies or hollow sleeve-shaped conductive bodies matched with the first diode connecting part and the second diode connecting part, and the first pin and the second pin are respectively inserted into the first diode connecting part and the second diode connecting part to be electrically connected with the first conductive body and the second conductive body.

[0009] Further, the first diode connecting part and the second diode connecting part are elastic metal clamps or sheet-shaped conductive bodies, the first pin and the second pin are sheet-shaped conductive bodies or elastic metal clamps matched with the first diode connecting part and the second diode connecting part, and the first pin and the second pin are respectively inserted into the first diode connecting part and the second diode connecting part to be electrically connected with the first conductive body and the second conductive body.

[0010] Further, the first diode connecting part and the second diode connecting part are elastic metal clamps, the first pin and the second pin are sheet-shaped conductive bodies, and the first pin and the second pin are respectively inserted into the first diode connecting part and the second diode connecting part to be electrically connected with the first conductive body and the second conductive body.

[0011] Further, the junction box body and the extension part are detachably connected through buckling.

[0012] Further, the junction box body is provided with sealing glue for insulating and sealing the first conductive body and the second conductive body, and the extension part is provided with sealing glue for insulating and sealing the diode.

[0013] The utility model discloses further discloses a photovoltaic system, comprising the diode detachable junction box, still include photovoltaic module, the diode detachable junction box includes N, N diode detachable junction box sequential arrangement and with photovoltaic module electric connection, still include left connection cable and right connection cable, left connection cable and right connection cable are electric connection with both ends diode detachable junction box respectively.

[0014] Further, the left connection cable and the right connection cable are respectively arranged on one side of the junction box body at both ends and are electrically connected with the first conductive body or the second conductive body in the junction box body.

[0015] Further, the left connection cable and the right connection cable are respectively arranged on one side of the extension part at both ends and are electrically connected with the first pin or the second pin in the extension part.

[0016] The utility model discloses beneficial effect is:

[0017] 1. In this structure, the diode is placed in the extension section and the extension section is detachably connected to the junction box body. This allows the extension section to be directly removed and replaced with a new extension section when the diode is damaged, thus replacing the diode.

[0018] 2. In this structure, the two pins and two conductors of the diode can be electrically connected by plugging in, which enables the diode to be quickly plugged in and unplugged, thereby improving the replacement speed of the diode.

[0019] 3. In this structure, the junction box body and the extension are detachably connected by a snap-fit. This facilitates the connection and disassembly of the junction box body and the extension, and ensures the connection strength between the junction box body and the extension, preventing them from coming apart when subjected to external forces such as bumps. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the structure of the detachable diode junction box according to an embodiment of this application.

[0021] Figure 2 This is an exploded view of the diode detachable junction box according to an embodiment of this application.

[0022] Figure 3 This is a schematic diagram of the internal structure of the detachable diode junction box according to an embodiment of this application.

[0023] Figure 4 This is a schematic diagram of the junction box body structure of the diode detachable junction box according to an embodiment of this application.

[0024] Figure 5 This is a schematic diagram of the extension structure of the diode detachable junction box according to an embodiment of this application.

[0025] Figure 6 This is a connection diagram of a first embodiment where the two pins of a diode are connected to two conductors.

[0026] Figure 7 This is a connection diagram of a second embodiment where the two pins of a diode are connected to two conductors.

[0027] Figure 8 This is a schematic diagram of the structure of a photovoltaic system according to an embodiment of this application.

[0028] Figure 9 This is a schematic diagram of another structure of the photovoltaic system according to an embodiment of this application.

[0029] Figure 10 This is a schematic diagram of a third structure of a photovoltaic system according to an embodiment of this application.

[0030] In the figure, marked: junction box body 1, first electrically conductive body 11, first electrically conductive body body 111, first diode connecting portion 112, second electrically conductive body 12, second electrically conductive body body 121, second diode connecting portion 122, box body 13, side wall 131, first through hole 1311, second through hole 1312, bottom wall 132, first bus bar perforation 1321, second bus bar perforation 1322, box cover 14, lock slot 15, extension 2, diode 21, diode body 211, first pin 212, second pin 213, buckle 22, first bus bar 31, second bus bar 32, left connecting cable 33, right connecting cable 34. DETAILED DESCRIPTION

[0031] In order to make the above-mentioned purposes, features and advantages of the utility model more apparent and easy to understand, the specific embodiments of the utility model are described in detail below with reference to the drawings.

[0032] As shown in Figure 1 The embodiment of the application discloses a detachable diode junction box, which comprises a junction box body 1, a first electrically conductive body 11 and a second electrically conductive body 12 are arranged in the junction box body 1, and further comprises an extension 2 and a diode 21; the diode 21 comprises a diode body 211 and a first pin 212 and a second pin 213 connected to the diode body 211; the diode 21 is installed in the extension 2; the extension 2 is detachably connected with the junction box body 1; the first pin 212 is electrically connected with the first electrically conductive body 11; and the second pin 213 is electrically connected with the second electrically conductive body 12.

[0033] Specifically, the first electrically conductive body 11 and the second electrically conductive body 12 are fixed in the junction box body 1; when the extension 2 is detachably connected with the junction box body 1, the first pin 212 is electrically connected with the first electrically conductive body 11, and the second pin 213 is electrically connected with the second electrically conductive body 12; when the diode 21 is damaged during use, the extension 2 can be directly pulled out of the junction box body 1, and then the extension 2 with a new diode 21 is inserted into the junction box body 1 again, so that the new diode 21 is connected with the first electrically conductive body 11 and the second electrically conductive body 12 again, and the new diode 21 continues to play a protection role.

[0034] In the structure, the diode 21 is arranged in the extension 2, and the extension 2 is detachably connected with the junction box body 1, so that when the diode 21 is damaged, the extension 2 can be directly detached and replaced with a new extension 2 to realize replacement of the diode 21. Furthermore, when the diode 21 is damaged, the entire junction box does not need to be replaced, so that the above-mentioned structure can realize rapid replacement of the diode 21 and reduce the replacement cost of the entire component when the diode 21 is damaged.

[0035] In the embodiment, the terminal box body 1 comprises a box body 13 and a box cover 14, the box body 13 comprises a side wall 131 and a bottom wall 132, and the extension part 2 is detachably fixedly connected with the side wall 131.

[0036] In the structure, the extension part 2 is detachably fixedly connected with the side wall 131 of the terminal box body 1, so that the stacking and carrying of the whole diode detachable terminal box are facilitated.

[0037] In the embodiment, the side wall 131 is provided with a first through hole 1311 and a second through hole 1312 penetrating through the side wall 131, the first pin 212 extends into the first through hole 1311 and is electrically connected with the first conductive body 11, and the second pin 213 extends into the second through hole 1312 and is electrically connected with the second conductive body 12.

[0038] In the structure, the first through hole 1311 and the second through hole 1312 are provided, so that when the extension part 2 is inserted, the two pins of the diode 21 are aligned and inserted into the first through hole 1311 and the second through hole 1312, and then the two pins of the diode 21 are accurately connected with the first conductive body 11 and the second conductive body 12.

[0039] In the embodiment, the first conductive body 11 comprises a first conductive body 111 and a first diode connecting part 112 arranged on the first conductive body 111, and the second conductive body 12 comprises a second conductive body 121 and a second diode connecting part 122 arranged on the second conductive body 121, and the first pin 212 and the second pin 213 are detachably electrically connected with the first diode connecting part 112 and the second diode connecting part 122 respectively.

[0040] Specifically, when the two pins of the diode 21 are connected with the two conductive bodies, there are two connection modes as follows:

[0041] Embodiment one: the first diode connecting part 112 and the second diode connecting part 122 are hollow sleeve-shaped conductive bodies or pin-shaped conductive bodies, the first pin 212 and the second pin 213 are pin-shaped conductive bodies or hollow sleeve-shaped conductive bodies matched with the first diode connecting part 112 and the second diode connecting part 122, and the first pin 212 and the second pin 213 are inserted into the first diode connecting part 112 and the second diode connecting part 122 respectively and are electrically connected with the first conductive body 11 and the second conductive body 12.

[0042] It should be explained that the structures of the first diode connecting part 112 and the second diode connecting part 122 can be the same or different, and the first diode connecting part 112 and the second diode connecting part 122 can be a hollow sleeve-shaped conductive body structure or a pin-shaped conductive body structure, that is, the structure of the first pin 212 and the second pin 213 can be a pin-shaped conductive body or a hollow sleeve-shaped conductive body, but the structure of the first pin 212 needs to cooperate with the structure of the first diode connecting part 112, and the structure of the second pin 213 needs to cooperate with the structure of the second diode connecting part 122.

[0043] As shown in Figure 6 When the first diode connecting part 112 and the second diode connecting part 122 are hollow sleeve-shaped conductive body structures, and the first pin 212 and the second pin 213 are pin-shaped conductive body structures, one end of the hollow sleeve-shaped conductive body is fixedly connected with the first conductive body 11 or the second conductive body 12, and the other end of the hollow sleeve-shaped conductive body is a spring structure bent and recessed towards the central axis of the first diode connecting part 112 or the second diode connecting part 122. When the spring structure is in the first diode connecting part 112 or the second diode connecting part 122, the spring structure will clamp the first diode connecting part 112 or the second diode connecting part 122, thereby realizing the conductive connection of the two.

[0044] In the second embodiment, the first diode connecting part 112 and the second diode connecting part 122 are elastic metal clamps or sheet-shaped conductive bodies, the first pin 212 and the second pin 213 are sheet-shaped conductive bodies or elastic metal clamps matched with the first diode connecting part 112 and the second diode connecting part 122, and the first pin 212 and the second pin 213 are respectively inserted into the first diode connecting part 112 and the second diode connecting part 122 to be electrically connected with the first conductive body 11 and the second conductive body 12.

[0045] It should be explained that the structures of the first diode connecting part 112 and the second diode connecting part 122 can be the same or different, and the first diode connecting part 112 and the second diode connecting part 122 can be a hollow sleeve-shaped conductive body structure or a pin-shaped conductive body structure, that is, the structure of the first pin 212 and the second pin 213 can be a pin-shaped conductive body or a hollow sleeve-shaped conductive body, but the structure of the first pin 212 needs to cooperate with the structure of the first diode connecting part 112, and the structure of the second pin 213 needs to cooperate with the structure of the second diode connecting part 122.

[0046] Specifically, as shown in Figure 7As shown, when the structure of the first diode connecting part 112 and the second diode connecting part 122 is an elastic metal clamp, and the first pin 212 and the second pin 213 are sheet conductors, when the first pin 212 and the second pin 213 are inserted into the first diode connecting part 112 and the second diode connecting part 122 respectively, the elastic metal clamp will clamp the first pin 212 or the second pin 213, that is, the conductive connection of the two can be realized.

[0047] The two plug-in structures can ensure the stability of the pin and the conductor connection and reduce the possibility of disconnection.

[0048] In the embodiment, the junction box body 1 and the extension part 2 are detachably connected through the buckle 22.

[0049] The buckle 22 is that: a locking groove 15 is formed on one of the side wall 131 of the junction box body 1 or the extension part 2, and a buckle 22 matched with the locking groove 15 is formed on the other part, when connected, the buckle 22 is inserted into the locking groove 15, and the locking of the junction box body 1 and the extension part 2 is completed.

[0050] In the structure, the junction box body 1 and the extension part 2 are detachably connected through the buckle 22, on the one hand, the connection and disconnection of the junction box body 1 and the extension part 2 are facilitated, and on the other hand, the connection strength of the junction box body 1 and the extension part 2 can be ensured, so that the disconnection of the junction box body 1 and the extension part 2 under external force such as bumping is prevented.

[0051] In the embodiment, the junction box body 1 is provided with sealing glue for insulating and sealing the first conductor 11 and the second conductor 12, and the extension part 2 is provided with sealing glue for insulating and sealing the diode 21.

[0052] Specifically, in the structure, the junction box body 1 and the extension part 2 are insulatingly sealed by injecting sealing glue into the junction box body 1 and the extension part 2 respectively, so that they can isolate external dust and water vapor.

[0053] The application also discloses a photovoltaic system comprising the detachable junction box of the diode, comprising a photovoltaic assembly, the photovoltaic assembly comprising a first busbar 31 and a second busbar 32, a first busbar through hole 1321 and a second busbar through hole 1322 are formed on the bottom wall 132 of the junction box body 1, the first busbar 31 and the second busbar 32 are electrically connected with the first conductor 11 and the second conductor 12 by penetrating through the first busbar through hole 1321 and the second busbar through hole 1322 respectively.

[0054] Specifically, the diode detachable junction box includes N units, which are arranged sequentially and electrically connected to the photovoltaic module. It also includes a left connecting cable 33 and a right connecting cable 34, which are electrically connected to the diode detachable junction boxes at both ends, respectively.

[0055] Specifically, there are two specific embodiments for connecting the left connecting cable 33, the right connecting cable 34, and the detachable diode junction box:

[0056] Example 1: As Figure 8 As shown, the left connecting cable 33 and the right connecting cable 34 are respectively disposed on one side of the junction box body 1 located at both ends, and are electrically connected to the first conductor 11 or the second conductor 12 inside the junction box body 1.

[0057] In this method, when replacing diode 21, the left connecting cable 33 and the right connecting cable 34 do not need to be replaced simultaneously, making it more convenient to replace diode 21.

[0058] Example 2: The left connecting cable 33 and the right connecting cable 34 are respectively disposed on one side of the extension 2 located at both ends, and are electrically connected to the first pin 212 or the second pin 213 in the extension 2.

[0059] It should be explained that the left connecting cable 33 and the right connecting cable 34 can specifically be disposed on one side of the extension 2 along the X-axis direction, as shown in the following example. Figure 9 As shown, it can also be set on one side of the extension 2 along the Y-axis direction, specifically as follows: Figure 10 As shown.

[0060] When replacing diode 21, the left connecting cable 33 and the right connecting cable 34 need to be replaced simultaneously. However, this structure can reduce the overall length of the diode detachable junction box, making it suitable for use in situations where space is limited. In addition, the orientation of the left connecting cable 33 and the right connecting cable 34 can be set according to the actual application environment.

[0061] The specific embodiments described above further illustrate the purpose, technical solution, and beneficial effects of this utility model. It should be understood that the above descriptions are merely specific embodiments of this utility model and are not intended to limit this utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A diode disconnectable terminal box characterized by: The utility model provides a terminal box, including the terminal box body (1), first conductive body (11) and second conductive body (12) are arranged in the terminal box body (1), still include extension (2) and diode (21), diode (21) includes diode body (211) and the first pin (212) and the second pin (213) that connects on diode body (211), diode (21) is installed in extension (2), extension (2) is detachably connected with terminal box body (1), first pin (212) is electrically connected with first conductive body (11), and second pin (213) is electrically connected with second conductive body (12).

2. The diode disconnectable terminal box according to claim 1, wherein: The terminal box body (1) includes a box body (13) and a box cover (14), the box body (13) includes a side wall (131) and a bottom wall (132), and the extension (2) is detachably fixedly connected with the side wall (131).

3. The diode disconnectable terminal box according to claim 2, wherein: The side wall (131) is provided with a first through hole (1311) and a second through hole (1312) penetrating through the side wall (131), the first pin (212) extends into the first through hole (1311) and is electrically connected with the first conductive body (11), and the second pin (213) extends into the second through hole (1312) and is electrically connected with the second conductive body (12).

4. The diode disconnectable terminal box according to claim 1, wherein: The first conductive body (11) includes a first conductive body (111) and a first diode connecting portion (112) arranged on the first conductive body (111), and the second conductive body (12) includes a second conductive body (121) and a second diode connecting portion (122) arranged on the second conductive body (121), and the first pin (212) and the second pin (213) are detachably electrically connected with the first diode connecting portion (112) and the second diode connecting portion (122) respectively.

5. The diode disconnectable terminal box according to claim 4, wherein: The first diode connecting portion (112) and the second diode connecting portion (122) are hollow sleeve-shaped conductive bodies or pin-shaped conductive bodies, the first pin (212) and the second pin (213) are pin-shaped conductive bodies or hollow sleeve-shaped conductive bodies matched with the first diode connecting portion (112) and the second diode connecting portion (122), and the first pin (212) and the second pin (213) are inserted into the first diode connecting portion (112) and the second diode connecting portion (122) to be electrically connected with the first conductive body (11) and the second conductive body (12) respectively.

6. The diode disconnectable terminal box according to claim 4, wherein: The first diode connecting portion (112) and the second diode connecting portion (122) are elastic metal clamps or sheet-shaped conductive bodies, the first pin (212) and the second pin (213) are sheet-shaped conductive bodies or elastic metal clamps matched with the first diode connecting portion (112) and the second diode connecting portion (122), and the first pin (212) and the second pin (213) are inserted into the first diode connecting portion (112) and the second diode connecting portion (122) to be electrically connected with the first conductive body (11) and the second conductive body (12) respectively.

7. The diode disconnectable terminal box according to claim 2, wherein: The terminal box body (1) and the extension (2) are detachably connected through a buckle (22).

8. A photovoltaic system comprising the diode disconnectable junction box according to any one of claims 1 to 7, characterized in that: The diode detachable junction box comprises a photovoltaic module, N diode detachable junction boxes are sequentially arranged and electrically connected with the photovoltaic module, and left and right connecting cables are arranged.

9. The photovoltaic system of claim 8, wherein: The left and right connecting cables are arranged on one side of the junction box body (1) at the two ends and are electrically connected with the first conductor (11) or the second conductor (12) in the junction box body (1).

10. The photovoltaic system of claim 8, wherein: The left and right connecting cables are arranged on one side of the extension (2) at the two ends and are electrically connected with the first pin (212) or the second pin (213) in the extension (2).

Images