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 is excellent in electrical performance, and can maintain excellent mechanical performance, sealing performance and stability in daily living environment.

Description

Technical Field

[0001] The invention relates to a photovoltaic junction box. Background Art

[0002] The inverter is a converter that converts DC power into constant frequency and voltage or frequency and voltage regulated AC power. During the conversion process, a safe and reliable internal connection method is required to transmit and regulate the power, and the connector plays a critical role. After years of development, the performance and reliability of connectors have made great progress, but the connectors currently on the market still have the following shortcomings: difficult operation and high cost. For example, the patent with publication number CN108933566B discloses a horizontal split junction box, including a frame, a cover plate, a nylon base plate, terminals and diodes; the frame is in the shape of a horizontal long strip; 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 terminal is fixed to the nylon base plate; the terminal is two horizontally arranged and adjacent metal sheets, one horizontal end of the terminal is provided with a bus bar connection part, and the other horizontal end is provided with a diode connection part; the two terminals are staggered to form a horizontal long strip with a gap between them; the bus bar connection parts of the two terminals are horizontally adjacent, and the diode connection parts of the two terminals are horizontally adjacent; the diode connects adjacent diode connection parts. The connectors configured in this type of junction box need to be welded during assembly, and cannot be quickly assembled when installed outdoors. In addition, since the junction box diodes generate a lot of heat in the working state, if the heat cannot be dissipated, the working life of the junction box will be greatly reduced. Summary of the invention

[0003] In order to overcome the deficiencies of the prior art, an object of the present invention is to provide a junction box with a heat sink having better heat dissipation performance.

[0004] In order to achieve the above objectives, the present invention provides a junction box with a heat sink, comprising a box body and a quick-plug connector connected to the box body, wherein the box body comprises a base, a cover, and a diode arranged in the base, and a heat sink is arranged on the diode.

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

[0006] Preferably, the quick-plug connector includes a negative connector body and a positive connector body, the negative connector body includes a negative connection end located at the front end and a first mounting end located at the rear end, a first retaining ring is snap-fitted into the negative connector body, a negative terminal is snap-connected to the first retaining ring, the negative terminal is connected to one end of a negative cable, and the other end of the negative cable is welded to the diode; the positive connector body includes a positive connection end located at the rear end and a second mounting end located at the front end, a second retaining ring is snap-fitted into the positive connector body, a positive terminal is snap-connected to the second retaining ring, and the positive terminal is connected to the positive cable.

[0007] Preferably, the first anti-retraction ring and the second anti-retraction ring are in a half-tube shape.

[0008] Preferably, the outer periphery of the first retaining ring has a plurality of first protrusions elastically protruding outward, and the first retaining ring is installed in the negative connector body through the first protrusion buckle; the negative terminal includes a columnar head and an expanded tail, the end of the negative cable is pressed on the tail, and a first card slot is provided on the negative terminal, and the first retaining ring has a first card elastically protruding inward, and when the negative terminal enters the negative connector body from the first mounting end, the first card is inserted into the first card slot.

[0009] Preferably, the outer circumference of the second retaining ring has a plurality of second protrusions elastically protruding outward, and the second retaining ring is installed in the positive connector body through the second protrusion buckle; the positive terminal includes a tubular head and an expanded tail, the end of the positive cable is pressed on the tail, and a second card slot is provided on the positive terminal, and the second retaining ring has a second card elastically protruding inward, and when the positive terminal enters the positive connector body from the second mounting end, the second card is inserted into the second card slot.

[0010] Preferably, a drum spring is arranged in the head of the positive terminal, the positive terminal has a limiting portion, and the drum spring is limited between the end face of the head of the positive terminal and the limiting portion.

[0011] Preferably, an unlocking component is formed on the negative connector body, and an elastic lock 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 through the elastic lock.

[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 sleeved on the positive electrode connection end.

[0014] Since a heat sink is added to the diode, the electrical performance of the present invention is excellent, the test results are reliable, and the excellent mechanical properties, sealing, and stability can be maintained in the daily living environment. In particular, fast installation can be achieved, so the overall use cost is low. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Attached Figure 1 It is a schematic diagram of a junction box with a heat sink of the present invention; Attached Figure 2 It is a three-dimensional exploded view of the box body of the junction box with heat sink of the present invention; Attached Figure 3 It is a rear view of the box body of the junction box with heat sink of the present invention; Attached Figure 4 It is a cross-sectional view of a box body of a junction box with a heat sink of the present invention; Attached Figure 5 It is a three-dimensional exploded view of the quick-plug connector with a heat sink terminal box of the present invention; Attached Figure 6 It is a rear view of the quick-plug connector with heat sink terminal box of the present invention; Attached Figure 7 A cross-sectional view of a quick-plug connector with a heat sink terminal box according to the present invention; Wherein: 1. negative connector body; 11. negative connection terminal; 12. first mounting terminal; 13. unlocking component; 2. positive connector body; 21. positive connection terminal; 22. second mounting terminal; 23. elastic lock; 3. first retaining ring; 31. first bulge; 32. first card; 4. negative terminal; 41. first slot; 5. second retaining ring; 51. second bulge; 52. second card; 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 DESCRIPTION

[0016] Hereinafter, the terms used in the specification will be briefly described, and the embodiments will be described in detail. All terms including descriptive terms or technical terms used herein should be interpreted as having meanings understood by those of ordinary skill in the art. However, these terms may have different meanings according to the intentions of those of ordinary skill in the art, precedents, or the emergence of new technologies.

[0017] In addition, some terms can be selected by the applicant, and in this case, the meaning of the selected terms will be described in detail in the detailed description of the embodiment. Therefore, the terms used herein must be defined based on the meaning of the terms together with the description in the entire specification. In addition, when a component "includes" or "contains" an element, unless there is a specific description to the contrary, the component may also include other elements without excluding other elements. In the following description, terms such as "component" and "module" indicate a unit for processing at least one function or operation, wherein the unit and module can be implemented as hardware or software or by combining hardware and software and implemented.

[0018] 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 being limited to the embodiments set forth herein. On the contrary, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the concept of the embodiments to those of ordinary skill in the art. In the following description, well-known functions or structures are not described in detail because they will obscure the embodiments with unnecessary details, and throughout the specification, the same reference numerals in the drawings represent the same or similar elements.

[0019] Attached Figure 1 Schematic diagram of the junction box with heat sink of the present invention; Figure 2 Attached is a three-dimensional exploded view of the box body of the junction box with heat sink of the present invention; Figure 3 FIG. 1 is a rear view of the box body of the junction box with heat sink of the present invention; FIG. Figure 4 It is a cross-sectional view of the box body of the junction box with heat sink of the present invention; the junction box with heat sink in this embodiment includes a box body and a quick-plug connector connected to the box body, the box body includes a base 101, a cover 102, and a diode 103 arranged in the base 101, a heat sink 104 is arranged on the diode 103, the heat sink 104 is tightly attached to the diode 103 and has a plurality of heat dissipation fins, and heat sinks 104 are arranged on the upper and lower sides of the diode 103. In the working state, the box body is installed on the photovoltaic module, and 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 working temperature of the diode and improving the working life of the junction box.

[0020] Attached Figure 5Attached is a three-dimensional exploded view of the quick-plug connector with a heat sink terminal box of the present invention; Figure 6 FIG. 1 is a rear view of the quick-plug connector with a heat sink terminal box of the present invention; FIG. Figure 7 It is a cross-sectional view of a quick-plug connector with a heat sink junction box of the present invention; the quick-plug connector includes a negative connector body 1 and a positive connector body 2, the negative connector body 1 includes a negative connection terminal 11 located at the front end and a first mounting terminal 12 located at the rear end, a first retaining ring 3 is snap-fitted inside the negative connector body 1, a negative terminal 4 is snap-connected to the first retaining ring 3, the negative terminal 4 is connected to one end of a negative cable, and the other end of the negative cable is welded to a diode 103; the positive connector body 2 includes a positive connection terminal 21 located at the rear end and a second mounting terminal 22 located at the front end, a second retaining ring 5 is snap-fitted inside the positive connector body 2, a positive terminal 6 is snap-connected to the second retaining ring 5, the positive terminal 6 is connected to a positive cable, and an O-ring 7 is sleeved on the positive connection terminal 21.

[0021] An unlocking component 13 is formed on the negative connector body 1, and an elastic lock 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 through the elastic lock 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.

[0022] Attached Figure 3 It is a cross-sectional view of the junction box with heat sink of the present invention; the first retaining ring 3 and the second retaining ring 5 are in a half-tube shape.

[0023] The outer periphery of the first stop ring 3 has a plurality of first protruding thorns 31 elastically protruding outwards. When the first stop ring 3 enters the negative connector body 1 from the first mounting end 12, the first protruding thorns 31 will be clamped on the inner wall of the negative connector body 1, so that the first stop ring 3 can be quickly fixed to 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 then pressed tightly. The negative terminal 4 is provided with a first card slot 41. The first stop ring 3 has a first card 32 elastically protruding inwards. It can be seen in the figure that 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 advancement of the negative terminal 4 until the negative terminal 4 moves into place, and the first card 32 is inserted into the first card slot 41, so that the negative terminal 4 is quickly fixed in the negative connector body 1.

[0024] The outer periphery of the second stop ring 5 has a plurality of second protruding thorns 51 elastically protruding outwards. When the second stop ring 5 enters the positive connector body 2 from the second mounting end 22, the second protruding thorns 51 will be clamped on the inner wall of the positive connector body 2, so that the second stop ring 5 can be quickly fixed to 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 then pressed tightly. The positive terminal 6 is provided with a second card slot 61. The second stop ring 5 has a second card 52 elastically protruding inwards. It can be seen in the figure that the second card 52 extends backwards. 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 advancement of the positive terminal 6. After the positive terminal 6 moves into place, the second card 52 is inserted into the second card slot 61, so that the positive terminal 6 is quickly fixed in the positive connector body 2.

[0025] A drum spring 63 is arranged inside the head of the positive terminal 6. The positive terminal 6 has a limiting portion 62. The drum spring 63 is limited between the end face of the head of the positive terminal 6 and the limiting portion 62. The drum spring 63 can alleviate the impact force when the negative terminal 4 is inserted into the positive terminal 6.

[0026] The junction box with heat sink of the present invention has excellent electrical performance, reliable test results, can maintain excellent mechanical properties, sealing, and stability in daily living environments, and in particular can achieve rapid installation, so the overall use cost is low.

[0027] It should be understood that the embodiments described herein should be considered in a descriptive sense only and not for the purpose of limitation. The description of the features or aspects within each implementation side should generally be considered to be applicable to other similar features or aspects in other embodiments. Although one or more embodiments have been described with reference to the accompanying drawings, it will be understood by those of ordinary skill in the art 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 a heat sink, characterized in that: The invention comprises a box body and a quick-plug connector connected to the box body, wherein the box body comprises a base (101), a cover (102), and a diode (103) arranged in the base (101), wherein a heat sink (104) is arranged on the diode (103).

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

3. The junction box with heat sink according to claim 1, characterized in that: The quick-plug connector comprises a negative connector body (1) and a positive connector body (2), wherein the negative connector body (1) comprises a negative connection end (11) located at the front end and a first mounting end (12) located at the rear end, wherein a first retaining ring (3) is snap-fitted inside the negative connector body (1), wherein a negative terminal (4) is snap-fitted on the first retaining ring (3), wherein the negative terminal (4) is connected to one end of a negative cable, and the other end of the negative cable is welded to the diode (103); the positive connector body (2) comprises a positive connection end (21) located at the rear end and a second mounting end (22) located at the front end, wherein a second retaining ring (5) is snap-fitted inside the positive connector body (2), wherein a positive terminal (6) is snap-fitted on the second retaining ring (5), and wherein the positive terminal (6) is connected to the positive cable.

4. The junction box with heat sink according to claim 1, characterized in that: The first anti-recognition ring (3) and the second anti-recognition ring (5) are in a half-tube shape.

5. The junction box with heat sink according to claim 4, characterized in that: The outer periphery of the first retaining ring (3) has a plurality of first protruding thorns (31) elastically protruding outwards, and the first retaining ring (3) is snap-fitted into the negative connector body (1) through the first protruding thorns (31); the negative terminal (4) comprises a columnar head and an expanded tail, and the end of the negative cable is press-fitted into the tail, and a first card slot (41) is provided on the negative terminal (4); the first retaining ring (3) has a first card slot (32) elastically protruding inwards, and when the negative terminal (4) enters the negative connector body (1) from the first mounting end (12), the first card slot (32) is inserted into the first card slot (41).

6. The junction box with heat sink according to claim 4, characterized in that: The outer periphery of the second retaining ring (5) has a plurality of second protrusions (51) elastically protruding outwards, and the second retaining ring (5) is snap-fitted into the positive connector body (2) through the second protrusions (51); the positive terminal (6) comprises a tubular head and an expanded tail, and the end of the positive cable is press-fitted into the tail, and a second card slot (61) is provided on the positive terminal (6). The second retaining ring (5) has a second card slot (52) elastically protruding inwards, and when the positive terminal (6) enters the positive connector body (2) from the second mounting end (22), the second card slot (52) is inserted into the second card slot (61).

7. The junction box with heat sink according to claim 6, characterized in that: A drum spring (63) is arranged in the head of the positive terminal (6), the positive terminal (6) has a limiting portion (62), and the drum spring (63) is limited between the end surface of the head of the positive terminal (6) and the limiting portion (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 lock buckle (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) and the positive connector body (2) are locked together by the elastic lock buckle (23).

9. The junction box with heat sink according to claim 8, characterized in that: A T-ring (81) and a nut (91) are mounted 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 mounted 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-type sealing ring (7) is sleeved on the positive electrode connection end (21).

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