Junction box with radiating fins

Abstract

A junction box with cooling fins comprises a box body and a quick-plug connector connected to the box body, the box body comprises a base, a cover body and a diode arranged in the base, and the cooling fins are arranged on the diode; the quick-plug type connector comprises a negative connector body and a positive connector body, the negative connector body comprises a negative connecting end located at the front end and a first mounting end located at the rear end, a first retaining ring is mounted in the negative connector body in a buckled mode, and a negative terminal is connected to the first retaining ring in a buckled mode. The negative terminal is connected with one end of a negative cable, and the other end of the negative cable is welded to a diode. The positive connector body comprises a positive connecting end located at the rear end and a second installing end located at the front end, a second retaining ring is installed in the positive connector body in a buckled mode, a positive terminal is connected to the second retaining ring in a buckled mode, and the positive terminal is connected with a positive cable. The cable of the utility model has excellent electrical performance, and can maintain excellent mechanical performance, sealing performance and stability in daily living environment.

Description

Technical Field

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

[0002] An inverter is a converter that transforms direct current (DC) power into alternating current (AC) power with fixed frequency and voltage or adjustable frequency and voltage. During the conversion process, a safe and reliable connection method is required internally to transmit and regulate electrical energy; this is where connectors play a crucial role. After years of development, the performance and reliability of connectors have greatly improved. However, connectors currently on the market still have the following shortcomings: they are difficult to operate and have high costs. For example, patent CN108933566B discloses a horizontally split junction box, including a frame, a cover plate, a nylon base plate, terminals, and diodes. The frame is horizontally elongated. The cover plate is detachably fixed to the top of the frame, the nylon base plate is detachably fixed to the bottom of the frame, and the terminals are fixed to the nylon base plate. The terminals are two horizontally arranged and adjacent metal pieces. One horizontal end of the terminal has a busbar connection part, and the other horizontal end has a diode connection part. The two terminals are staggered and joined together to form a horizontally elongated shape with a gap between them. The busbar connection parts of the two terminals are horizontally adjacent, and the diode connection parts of the two terminals are horizontally adjacent. The diodes are connected to adjacent diode connection parts. The connectors in this type of junction box require soldering during assembly, making rapid assembly impossible when installing outdoors. In addition, the diodes in the junction box generate a lot of heat during operation, and if heat cannot be dissipated, the service life of the junction box will be significantly reduced. Summary of the Invention

[0003] In order to overcome the shortcomings of the existing technology, the purpose of this utility model is to provide a junction box with heat sink that has better heat dissipation performance.

[0004] To achieve the above objectives, this utility model provides a junction box with a heat sink, including a box body and a quick-connect connector connected to the box body. The box body includes a base, a cover, and a diode disposed in the base, with a heat sink disposed on the diode.

[0005] Preferably, heat sinks are provided on both the upper and lower sides of the diode.

[0006] Preferably, the quick-connect connector includes a negative connector body and a positive connector body. The negative connector body includes a negative connection end at the front end and a first mounting end at the rear end. A first anti-reverse ring is snapped into the negative connector body, and a negative terminal is snapped into the first anti-reverse ring. One end of a negative cable is connected to the negative terminal, and the other end of the negative cable is soldered to the diode. The positive connector body includes a positive connection end at the rear end and a second mounting end at the front end. A second anti-reverse ring is snapped into the positive connector body, and a positive terminal is snapped into the second anti-reverse ring. The positive terminal is connected to a positive cable.

[0007] Preferably, the first and second anti-reverse rings are semi-tubular in shape.

[0008] Preferably, the outer periphery of the first anti-reverse ring has a plurality of outwardly elastically protruding first protrusions, and the first anti-reverse ring is installed in the negative connector body by means of the first protrusions; the negative terminal includes a columnar head and an expanded tail, the end of the negative cable is pressed into the tail, the negative terminal is provided with a first slot, and the first anti-reverse ring has an inwardly elastically protruding first card, when the negative terminal enters the negative connector body from the first mounting end, the first card is inserted into the first slot.

[0009] Preferably, the outer periphery of the second anti-reverse ring has a plurality of outwardly elastically protruding second protrusions, and the second anti-reverse ring is installed in the positive connector body by means of the second protrusions; the positive terminal includes a tubular head and an expanded tail, the end of the positive cable is pressed into the tail, the positive terminal is provided with a second slot, and the second anti-reverse ring has an inwardly elastically protruding second card, when the positive terminal enters the positive connector body from the second mounting end, the second card is inserted into the second slot.

[0010] Preferably, a drum spring is provided inside the head of the positive terminal, the positive terminal has a limiting part, and the drum spring is limited between the end face of the positive terminal head and the limiting part.

[0011] Preferably, an unlocking component is formed on the negative connector body, and an elastic latch is formed on the positive connector body. When the negative connection end and the positive connection end are connected together, the negative connector body is locked together with the positive connector body by the elastic latch.

[0012] Preferably, a T-ring and a nut are installed on the first mounting end, and the T-ring is fixedly connected to the first mounting end by the nut; a T-ring and a nut are installed on the second mounting end, and the T-ring is fixedly connected to the second mounting end by the nut.

[0013] Preferably, an O-ring is fitted onto the positive electrode connection terminal.

[0014] Because a heat sink is added to the diode, this invention has excellent electrical performance and reliable test results. It can maintain excellent mechanical performance, sealing, and stability in daily living environments. In particular, it can be installed quickly, resulting in low overall cost of use. Attached Figure Description

[0015] Appendix Figure 1 This is a schematic diagram of the junction box with heat sink of this utility model;

[0016] Appendix Figure 2 This is a three-dimensional exploded view of the junction box with heat sink of this utility model;

[0017] Appendix Figure 3 This is a rear view of the junction box with heat sink of this utility model;

[0018] Appendix Figure 4 This is a cross-sectional view of the junction box with heat sink of this utility model;

[0019] Appendix Figure 5 This is a three-dimensional exploded view of the quick-connect connector with heat sink junction box of this utility model;

[0020] Appendix Figure 6 This is a rear view of the quick-connect connector with heat sink junction box of this utility model;

[0021] Appendix Figure 7 This is a cross-sectional view of the quick-connect connector with heat sink junction box of this utility model;

[0022] The components are as follows: 1. Negative connector body; 11. Negative connection end; 12. First mounting end; 13. Unlocking component; 2. Positive connector body; 21. Positive connection end; 22. Second mounting end; 23. Elastic latch; 3. First anti-reverse ring; 31. First protrusion; 32. First clip; 4. Negative terminal; 41. First slot; 5. Second anti-reverse ring; 51. Second protrusion; 52. Second clip; 6. Positive terminal; 61. Second slot; 62. Limiting part; 63. Drum spring; 7. O-ring; 81. T-ring; 82. T-ring; 91. Nut; 92. Nut; 101. Base; 102. Cover; 103. Diode; 104. Heat sink. Detailed Implementation

[0023] In the following description, the terminology used in the specification will be briefly described, and embodiments will be described in detail. All terms used herein, including descriptive or technical terms, should be interpreted as having the meaning understood by one of ordinary skill in the art. However, these terms may have different meanings depending on the intent of one of ordinary skill in the art, precedent, or the emergence of new technologies.

[0024] Furthermore, some terms may be chosen by the applicant, and in such cases, the meaning of the chosen terms will be described in detail in the detailed description of the embodiments. Therefore, the terms used herein must be defined based on their meanings in conjunction with the description throughout the specification. Additionally, when a component “comprises” or “contains” an element, the component may also include other elements without excluding them, unless there is a specific description to the contrary. In the following description, terms such as “component” and “module” indicate a unit for performing at least one function or operation, wherein units and modules may be implemented as hardware or software or by combining hardware and software.

[0025] Embodiments will now be described more fully with reference to the accompanying drawings. However, embodiments may be implemented in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the concept of the embodiments to those skilled in the art. In the following description, well-known functions or structures are not described in detail, as they would obscure the embodiments with unnecessary detail, and throughout the specification, the same reference numerals in the drawings denote the same or similar elements.

[0026] Appendix Figure 1 This is a schematic diagram of the junction box with heat sink of this utility model; attached. Figure 2 This is a three-dimensional exploded view of the junction box with heat sink of this utility model; attached. Figure 3 This is a rear view of the junction box with heat sink of this utility model; attached. Figure 4 This is a cross-sectional view of the junction box with heat sink of this utility model. The junction box with heat sink in this embodiment includes a box body and a quick-connect connector connected to the box body. The box body includes a base 101, a cover 102, and a diode 103 disposed in the base 101. A heat sink 104 is disposed on the diode 103. The heat sink 104 is tightly attached to the diode 103 and has multiple heat dissipation fins. Heat sinks 104 are disposed on both the upper and lower sides of the diode 103. In the working state, the box body is installed on the photovoltaic module. The heat sink 104 absorbs the heat of the diode 103 and dissipates it through the surface of the box body and the surface of the photovoltaic module, thereby reducing the operating temperature of the diode and improving the service life of the junction box.

[0027] Appendix Figure 5This is a three-dimensional exploded view of the quick-connect connector with heat sink junction box of this utility model; attached. Figure 6 This is a rear view of the quick-connect connector with heat sink junction box of this utility model; attached. Figure 7 This is a cross-sectional view of the quick-connect connector with heat sink junction box of this utility model. The quick-connect connector includes a negative connector body 1 and a positive connector body 2. The negative connector body 1 includes a negative connection end 11 at the front end and a first mounting end 12 at the rear end. A first anti-reverse ring 3 is snapped into the negative connector body 1. A negative terminal 4 is snapped into the first anti-reverse ring 3. One end of a negative cable is connected to the negative terminal 4. The other end of the negative cable is soldered to a diode 103. The positive connector body 2 includes a positive connection end 21 at the rear end and a second mounting end 22 at the front end. A second anti-reverse ring 5 is snapped into the positive connector body 2. A positive terminal 6 is snapped into the second anti-reverse ring 5. A positive cable is connected to the positive terminal 6. An O-ring 7 is fitted on the positive connection end 21.

[0028] An unlocking component 13 is formed on the negative connector body 1, and an elastic latch 23 is formed on the positive connector body 2. When the negative connection end 11 is connected to the positive connection end 21, the negative connector body 1 is locked together with the positive connector body 2 by the elastic latch 23. A T-ring 81 and a nut 91 are installed on the first mounting end 12, and the T-ring 81 is fixedly connected to the first mounting end 12 by the nut 91; a T-ring 82 and a nut 92 are installed on the second mounting end 22, and the T-ring 82 is fixedly connected to the second mounting end 22 by the nut 92.

[0029] Appendix Figure 3 This is a cross-sectional view of the junction box with heat sink of this utility model; the first anti-reverse ring 3 and the second anti-reverse ring 5 are in the shape of a semi-tube.

[0030] The outer periphery of the first anti-reverse ring 3 has multiple outwardly elastic protruding first protrusions 31. When the first anti-reverse ring 3 enters the negative connector body 1 from the first mounting end 12, the first protrusions 31 will lock onto the inner wall of the negative connector body 1, thereby quickly fixing the first anti-reverse ring 3 onto the negative connector body 1. The negative terminal 4 includes a columnar head and an expanded tail. The end of the negative cable is inserted into the tail of the negative terminal 4 and pressed tightly. The negative terminal 4 is provided with a first slot 41. The first anti-reverse ring 3 has an inwardly elastic protruding first card 32. As can be seen in the figure, the first card 32 extends forward. When the negative terminal 4 enters the negative connector body 1 from the first mounting end 12, the first card 32 is lifted forward to ensure the forward movement of the negative terminal 4. After the negative terminal 4 moves into place, the first card 32 is inserted into the first slot 41, thereby quickly fixing the negative terminal 4 into the negative connector body 1.

[0031] The second anti-reverse ring 5 has multiple outwardly elastically protruding second protrusions 51 on its outer periphery. When the second anti-reverse ring 5 enters the positive connector body 2 from the second mounting end 22, the second protrusions 51 will lock onto the inner wall of the positive connector body 2, thereby quickly fixing the second anti-reverse ring 5 onto the positive connector body 2. The positive terminal 6 includes a tubular head and an expanded tail. The end of the positive cable is inserted into the tail of the positive terminal 6 and pressed tightly. The positive terminal 6 is provided with a second slot 61. The second anti-reverse ring 5 has an inwardly elastically protruding second card 52. As can be seen in the figure, the second card 52 extends backward. When the positive terminal 6 enters the positive connector body 2 from the second mounting end 22, the second card 52 is lifted forward to ensure the forward movement of the positive terminal 6. After the positive terminal 6 moves into place, the second card 52 is inserted into the second slot 61, thereby quickly fixing the positive terminal 6 into the positive connector body 2.

[0032] A drum spring 63 is provided inside the head of the positive terminal 6. The positive terminal 6 has a limiting part 62. The drum spring 63 is limited between the end face of the head of the positive terminal 6 and the limiting part 62. The drum spring 63 can relieve the impact force when the negative terminal 4 is inserted into the positive terminal 6.

[0033] The junction box with heat sink of this utility model has excellent electrical performance and reliable test results. It can maintain excellent mechanical performance, sealing and stability in daily living environment. In particular, it can be installed quickly, so the overall cost of use is low.

[0034] It should be understood that the embodiments described herein should be considered in a descriptive sense only and not for limiting purposes. The description of features or aspects within each embodiment should generally be considered applicable to other similar features or aspects in other embodiments. Although one or more embodiments have been described with reference to the accompanying drawings, those skilled in the art will understand that various changes in form and detail may be made therein without departing from the spirit and scope defined by the appended claims.

Claims

1. A junction box with heat sink, characterized in that: The device includes a housing and a quick-connect connector connected to the housing. The housing includes a base (101), a cover (102), and a diode (103) disposed in the base (101). A heat sink (104) is disposed on the diode (103).

2. The junction box with heat sink according to claim 1, characterized in that: The diode (103) is provided with heat sinks (104) on both the upper and lower sides.

3. The junction box with heat sink according to claim 1, characterized in that: The quick-connect connector includes a negative connector body (1) and a positive connector body (2). The negative connector body (1) includes a negative connection end (11) at the front end and a first mounting end (12) at the rear end. A first anti-reverse ring (3) is snapped into the negative connector body (1). A negative terminal (4) is snapped onto the first anti-reverse ring (3). One end of a negative cable is connected to the negative terminal (4). The other end of the negative cable is soldered to the diode (103). The positive connector body (2) includes a positive connection end (21) at the rear end and a second mounting end (22) at the front end. A second anti-reverse ring (5) is snapped into the positive connector body (2). A positive terminal (6) is snapped onto the second anti-reverse ring (5). A positive cable is connected to the positive terminal (6).

4. The junction box with heat sink according to claim 3, characterized in that: The first anti-reverse ring (3) and the second anti-reverse ring (5) are semi-tubular in shape.

5. The junction box with heat sink according to claim 4, characterized in that: The outer periphery of the first anti-reverse ring (3) has a plurality of outwardly elastic protruding first protrusions (31), and the first anti-reverse ring (3) is installed in the negative connector body (1) by the first protrusions (31); the negative terminal (4) includes a columnar head and an expanded tail, the end of the negative cable is pressed into the tail, the negative terminal (4) is provided with a first slot (41), and the first anti-reverse ring (3) has an inwardly elastic protruding first card (32). When the negative terminal (4) enters the negative connector body (1) from the first mounting end (12), the first card (32) is inserted into the first slot (41).

6. The junction box with heat sink according to claim 4, characterized in that: The outer periphery of the second anti-reverse ring (5) has a plurality of outwardly elastically protruding second protrusions (51), and the second anti-reverse ring (5) is installed in the positive connector body (2) by the second protrusions (51); the positive terminal (6) includes a tubular head and an expanded tail, the end of the positive cable is pressed into the tail, the positive terminal (6) is provided with a second slot (61), and the second anti-reverse ring (5) has an inwardly elastically protruding second card (52). When the positive terminal (6) enters the positive connector body (2) from the second mounting end (22), the second card (52) is inserted into the second slot (61).

7. The junction box with heat sink according to claim 6, characterized in that: The positive terminal (6) has a drum spring (63) inside its head, and the positive terminal (6) has a limiting part (62). The drum spring (63) is limited between the end face of the head of the positive terminal (6) and the limiting part (62).

8. The junction box with heat sink according to claim 7, characterized in that: An unlocking component (13) is formed on the negative connector body (1), and an elastic latch (23) is formed on the positive connector body (2). When the negative connection end (11) and the positive connection end (21) are connected together, the negative connector body (1) is locked together with the positive connector body (2) by the elastic latch (23).

9. The junction box with heat sink according to claim 8, characterized in that: A T-ring (81) and a nut (91) are installed on the first mounting end (12), and the T-ring (81) is fixedly connected to the first mounting end (12) by the nut (91); a T-ring (82) and a nut (92) are installed on the second mounting end (22), and the T-ring (82) is fixedly connected to the second mounting end (22) by the nut (92).

10. The junction box with heat sink according to claim 9, characterized in that: An O-ring (7) is fitted on the positive terminal (21).

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