Photovoltaic junction box with built-in intelligent temperature control system

Abstract

The invention relates to the technical field of photovoltaic junction boxes, and discloses a photovoltaic junction box with a built-in intelligent temperature control system, which solves the problem of poor heat dissipation effect of the existing photovoltaic junction box, and comprises a box body, a diode is arranged in the middle of the interior of the box body, and a temperature sensor is arranged on one side of the diode. A first heat conduction plate and a second heat conduction plate are arranged in the box body, an air cooling flow channel, a plurality of liquid cooling flow channels, an evaporation backflow channel and a plurality of evaporation liquid storage grooves are formed in each of the first heat conduction plate and the second heat conduction plate, an arc-shaped groove is formed in one side in each air cooling flow channel, and a plurality of V-shaped flow guide plates are arranged on the other side in each air cooling flow channel; an air cooling transformation channel is formed between the V-shaped flow guide plate and the arc-shaped groove, an air cooling heat dissipation mechanism, a liquid cooling heat dissipation mechanism and a heat pipe heat dissipation mechanism are sequentially arranged on the box body in a penetrating mode, and an intelligent temperature controller is fixedly arranged on one side of the liquid cooling heat dissipation mechanism; by means of the photovoltaic junction box, efficient heat dissipation can be achieved, and the temperature control effect is improved.

Description

Technical Field

[0001] The invention belongs to the technical field of photovoltaic junction boxes, and in particular relates to a photovoltaic junction box with a built-in intelligent temperature control system. Background Art

[0002] The photovoltaic junction box is an indispensable component in the photovoltaic power generation system and a key element for the photovoltaic module to transmit electrical energy normally.

[0003] The diodes installed in the photovoltaic modules can also effectively prevent the adverse effects caused by the hot spot effect on some solar cells. Due to long-term use in outdoor environments, the weather resistance and heat dissipation requirements of the photovoltaic junction box are very high. In order to achieve better sealing, the box body of the traditional photovoltaic junction box is usually sealed and connected. Therefore, when a whole circle of sealant is used to seal the junction box, the heat cannot be dissipated in time, which will cause the local temperature of the junction box to be too high, thereby causing the diodes in the junction box to fail or detach. Therefore, the present application proposes a photovoltaic junction box with a built-in intelligent temperature control system. Summary of the invention

[0004] In view of the above situation, in order to overcome the defects of the prior art, the present invention provides a photovoltaic junction box with a built-in intelligent temperature control system, which effectively solves the problem of poor heat dissipation effect of the existing photovoltaic junction box.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a photovoltaic junction box with a built-in intelligent temperature control system, comprising a box body, an incoming cable is inserted into the bottom end of one side of the box body, an outgoing cable is inserted into the bottom end of the other side of the box body, a diode connected to the incoming cable and the outgoing cable is arranged at the middle position inside the box body, a temperature sensor is arranged on one side of the diode, a first heat conducting plate located at the bottom end of the diode and a second heat conducting plate located at the top end of the diode are arranged inside the box body, an air cooling channel, a plurality of liquid cooling channels, an evaporation reflux channel and a plurality of evaporation liquid storage tanks are arranged inside the first heat conducting plate and the second heat conducting plate, a plurality of arc-shaped grooves are arranged on the side of the air cooling channel close to the diode, and the arc-shaped grooves are arranged equidistantly. A plurality of V-shaped guide plates matching the arc-shaped grooves are fixedly arranged on the side of the air-cooling flow channel away from the diode, and the spacing of the V-shaped guide plates decreases from the air inlet side to the air exhaust side. An air-cooling transformer channel is formed between the V-shaped guide plates and the arc-shaped grooves, and the evaporation reflux channel is connected to the evaporation liquid storage tank. The evaporation liquid storage tank is filled with evaporation liquid, and a heat-conducting component is fixedly arranged inside the evaporation liquid storage tank. An air-cooling heat dissipation mechanism, a liquid-cooling heat dissipation mechanism and a heat pipe heat dissipation mechanism are sequentially interspersed on the box body, the air-cooling heat dissipation mechanism is connected to the air-cooling flow channel, the liquid-cooling heat dissipation mechanism is connected to the liquid-cooling flow channel, the heat pipe heat dissipation mechanism is connected to the evaporation reflux channel, the heat pipe heat dissipation mechanism is interspersed in the air-cooling heat dissipation mechanism, and an intelligent thermostat is fixedly arranged on one side of the liquid-cooling heat dissipation mechanism.

[0006] Preferably, a first thermal grease is provided between the bottom surface of the diode and the first thermal conductive plate, and a second thermal grease is provided between the top surface of the diode and the second thermal conductive plate.

[0007] Preferably, a cover is provided on the top of the box body, and the cover is connected to the box body by screws.

[0008] Preferably, the heat conducting assembly is composed of a heat conducting arm, a plurality of heat conducting strips and an arcuate heat conducting plate, one end of the heat conducting arm is fixedly connected to the inside of the evaporation reflux channel, the arcuate heat conducting plate is fixedly connected to the inside of the evaporation liquid storage tank, and the heat conducting strip is fixedly connected between the heat conducting arm and the arcuate heat conducting plate.

[0009] Preferably, the air-cooled heat dissipation mechanism is composed of a fan, an air filter, a first air inlet duct, a first air exhaust duct, a second air inlet duct, a second air exhaust duct and a cooling air duct. The fan is fixedly connected to the bottom end of one side of the box body, the air filter is fixedly connected to the exhaust port of the fan, the first air inlet duct, the second air inlet duct and the cooling air duct are all fixedly connected to one side of the air filter, the first air inlet duct and the first exhaust duct are respectively connected to the two ends of the first heat conduction plate and the second heat conduction plate and are connected to the air-cooling flow channel, and the cooling air duct is sleeved on the heat pipe heat dissipation mechanism.

[0010] Preferably, the fan is fixedly connected to the box body via a fan seat, and protective nets are fixedly provided at one end of the first exhaust duct, the second exhaust duct and the cooling duct away from the fan.

[0011] Preferably, the heat pipe heat dissipation mechanism is composed of a plurality of L-shaped heat pipes 1 and a plurality of L-shaped heat pipes 2, the L-shaped heat pipes 1 are respectively fixedly connected to the two ends of the first heat conducting plate and are communicated with the evaporation reflux channel, and the L-shaped heat pipes 2 are respectively fixedly connected to the two ends of the second heat conducting plate and are communicated with the evaporation reflux channel.

[0012] Preferably, a plurality of heat sink fins 1 and a plurality of heat sink fins 2 are fixedly disposed on the top ends of the sides of the L-shaped heat pipe 1 and the L-shaped heat pipe 2, respectively, and the heat sink fins 1 and the heat sink fins 2 are both located inside the cooling air duct.

[0013] Preferably, the liquid-cooled heat dissipation mechanism consists of a liquid storage tank, a circulation pump, a liquid extraction pipe, a liquid inlet pipe, two liquid inlet branches, two liquid discharge branches, a liquid discharge pipe and a cooling coil. The liquid storage tank is fixedly connected to the bottom end of the box body, the circulation pump is fixedly connected to the top of the liquid storage tank, the liquid extraction pipe is connected between the liquid storage tank and the circulation pump, the liquid inlet pipe is fixedly connected to the liquid outlet of the circulation pump, the liquid inlet branch pipe is connected to the liquid inlet pipe, the liquid inlet branch pipe and the liquid discharge branch pipe are respectively fixedly connected to the two ends of the first heat conduction plate and the second heat conduction plate and are connected to the liquid cooling channel, the liquid discharge pipe is connected to the liquid discharge branch pipe, and the cooling coil is connected between the liquid discharge pipe and the liquid storage tank.

[0014] Preferably, a plurality of partitions are fixedly arranged inside the liquid storage tank, and an S-shaped flow channel is formed between the partitions and the liquid storage tank.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] (1) During operation, by providing a first heat conducting plate and a second heat conducting plate, the first heat conducting plate and the second heat conducting plate can be fitted with the top and bottom surfaces of the diode to achieve sufficient heat dissipation of the diode. By providing an air cooling channel, an arc-shaped groove, a V-shaped guide plate, an air cooling transformer channel, and an air cooling heat dissipation mechanism consisting of a fan, an air filter, a first air inlet pipe, a first air exhaust pipe, a second air inlet pipe, a second air exhaust pipe, and a cooling air pipe, the first heat conducting plate and the second heat conducting plate can be air cooled and heat dissipated. Since the arc-shaped grooves are arranged at equal intervals, the spacing of the V-shaped guide plates decreases from the air inlet side to the air exhaust side in sequence. Therefore, the air intake process can achieve multiple compressions, the air pressure increases during the compression process, and the wind speed becomes faster, thereby reducing the temperature of the wind and further improving the air cooling efficiency.

[0017] (2) By providing an evaporation reflux channel, an evaporation liquid storage tank, an evaporation liquid, a heat conduction component, and a heat pipe heat dissipation mechanism composed of a plurality of L-shaped heat pipes 1 and a plurality of L-shaped heat pipes 2, it is possible to utilize the reaction of evaporation absorbing heat and condensation releasing heat to achieve efficient heat conduction to the first heat conduction plate and the second heat conduction plate, thereby achieving efficient heat dissipation of the diode. Since the top ends of the L-shaped heat pipe 1 and the L-shaped heat pipe 2 are inserted into the interior of the cooling air duct, and the heat dissipation fins 1 and 2 are both located inside the cooling air duct, it is possible to achieve air cooling and heat dissipation of the L-shaped heat pipe 1, the L-shaped heat pipe 2, the heat dissipation fins 1, and the heat dissipation fins 2;

[0018] (3) By providing a liquid cooling channel and a liquid cooling heat dissipation mechanism consisting of a liquid storage tank, a circulation pump, a liquid extraction pipe, a liquid inlet pipe, two liquid inlet branches, two liquid discharge branches, a liquid discharge pipe and a cooling coil, liquid cooling circulation heat dissipation can be achieved for the first heat conducting plate and the second heat conducting plate, thereby further improving the heat dissipation efficiency of the first heat conducting plate and the second heat conducting plate, and further improving the heat dissipation efficiency of the diode. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The accompanying drawings are used to provide further understanding of the present invention and constitute a part of the specification. They are used to explain the present invention together with the embodiments of the present invention and do not constitute a limitation of the present invention.

[0020] In the attached picture:

[0021] Figure 1 This is a schematic diagram of the structure of a photovoltaic junction box with a built-in intelligent temperature control system according to the present invention;

[0022] Figure 2 This is a cross-sectional view of a photovoltaic junction box with a built-in intelligent temperature control system according to the present invention;

[0023] Figure 3 It is a schematic diagram of the internal structure of the box body of the present invention;

[0024] Figure 4 It is a schematic diagram of the structures of the air-cooling heat dissipation mechanism, the liquid-cooling heat dissipation mechanism and the heat pipe heat dissipation mechanism of the present invention;

[0025] Figure 5 This is a schematic diagram of the internal structure of the first heat conducting plate of the present invention;

[0026] Figure 6 It is a schematic diagram of the structure of the heat conduction component of the present invention;

[0027] Figure 7 This is a schematic diagram of the structure of the air-cooling heat dissipation mechanism of the present invention;

[0028] Figure 8 It is a schematic diagram of the structure of the heat pipe heat dissipation mechanism of the present invention;

[0029] Fig. 9 It is a schematic diagram of the structure of the liquid cooling heat dissipation mechanism of the present invention;

[0030] In the figure: 1, box body; 2, incoming cable; 3, outgoing cable; 4, diode; 5, temperature sensor; 6, first heat conducting plate; 7, second heat conducting plate; 8, air cooling channel; 9, liquid cooling channel; 10, evaporation reflux channel; 11, evaporation liquid storage tank; 12, arc groove; 13, V-shaped guide plate; 14, air cooling transformer channel; 15, heat conduction component; 16, air cooling heat dissipation mechanism; 17, liquid cooling heat dissipation mechanism; 18, heat pipe heat dissipation mechanism; 19, thermal grease 1; 20, thermal grease 2; 21, cover; 22, thermal arm; 23, thermal strip; 24, arc guide Hot plate; 25. Fan; 26. Air filter; 27. First air inlet duct; 28. First exhaust duct; 29. ​​Second air inlet duct; 30. Second exhaust duct; 31. Cooling duct; 32. Fan base; 33. Protective net; 34. L-type heat pipe one; 35. L-type heat pipe two; 36. Heat dissipation fin one; 37. Heat dissipation fin two; 38. Liquid storage tank; 39. Circulating pump; 40. Liquid extraction pipe; 41. Liquid inlet pipe; 42. Liquid inlet branch pipe; 43. Liquid discharge branch pipe; 44. Liquid discharge pipe; 45. Cooling coil; 46. Partition; 47. S-type flow channel; 48. Intelligent thermostat. DETAILED DESCRIPTION

[0031] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments; based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0032] Embodiment 1, by Figures 1 to 6The present invention provides a photovoltaic junction box with a built-in intelligent temperature control system, comprising a box body 1, an incoming cable 2 is inserted at the bottom end of one side of the box body 1, an outgoing cable 3 is inserted at the bottom end of the other side of the box body 1, a diode 4 connected to the incoming cable 2 and the outgoing cable 3 is arranged at the middle position inside the box body 1, a temperature sensor 5 is arranged on one side of the diode 4, a first heat conducting plate 6 located at the bottom end of the diode 4 and a second heat conducting plate 7 located at the top end of the diode 4 are arranged inside the box body 1, an air-cooling channel 8, a plurality of liquid-cooling channels 9, an evaporation reflux channel 10 and a plurality of evaporation liquid storage tanks 11 are provided inside the first heat conducting plate 6 and the second heat conducting plate 7, a plurality of arc-shaped grooves 12 are provided on the side of the air-cooling channel 8 close to the diode 4, and the arc-shaped grooves 12 are arranged equidistantly, and a plurality of V-shaped guide plates 13 matching the arc-shaped grooves 12 are fixedly provided on the side of the air-cooling channel 8 away from the diode 4, and the V-shaped guide plates 13 are provided on the side of the air-cooling channel 8 away from the diode 4. The spacing of the flow plate 13 decreases from the air inlet side to the air outlet side, and an air-cooled pressure-changing channel 14 is formed between the V-shaped guide plate 13 and the arc-shaped groove 12. The evaporation return channel 10 is connected to the evaporation liquid storage tank 11. The interior of the evaporation liquid storage tank 11 is filled with evaporation liquid. A heat-conducting component 15 is fixedly arranged inside the evaporation liquid storage tank 11. An air-cooled heat dissipation mechanism 16, a liquid-cooled heat dissipation mechanism 17 and a heat pipe heat dissipation mechanism 18 are sequentially interspersed on the box body 1. The air-cooled heat dissipation mechanism 16 is connected to the air-cooled flow channel 8, the liquid-cooled heat dissipation mechanism 17 is connected to the liquid-cooled flow channel 9, the heat pipe heat dissipation mechanism 18 is connected to the evaporation return channel 10, and the heat pipe heat dissipation mechanism 18 is interspersed in the air-cooled heat dissipation mechanism 16. An intelligent thermostat 48 is fixedly arranged on one side of the liquid-cooled heat dissipation mechanism 17. The temperature sensor 5 and the intelligent thermostat 48 can realize intelligent temperature control according to the monitored temperature, and the air-cooled heat dissipation mechanism 16 and the liquid-cooled heat dissipation mechanism 17 can be selectively started.

[0033] The first heat conducting plate 6 and the second heat conducting plate 7 are respectively connected to the bottom surface and the top surface of the diode 4, which can improve the heat conduction efficiency and realize the heat dissipation of the diode 4. The air-cooling heat dissipation mechanism 16 blows air into the inside of the air-cooling flow channel 8 to realize the air-cooling heat dissipation of the first heat conducting plate 6 and the second heat conducting plate 7. Through the cooperation of the arc groove 12 and the V-shaped guide plate 13, the wind pressure and wind speed are increased, so that the wind temperature can be reduced and the air cooling efficiency is improved. Since the arc grooves 12 are arranged at equal distances, the spacing of the V-shaped guide plates 13 decreases from the air inlet side to the air outlet side, so that the air cooling becomes The width of the pressure channel 14 decreases from the air inlet end to the air outlet end, so that the wind can be accelerated at multiple levels, and the temperature can be reduced at multiple levels, thereby further improving the air cooling efficiency. The cooperation of the liquid cooling heat dissipation mechanism 17 and the liquid cooling flow channel 9 can realize liquid cooling heat dissipation of the first heat conducting plate 6 and the second heat conducting plate 7. The cooperation of the heat pipe heat dissipation mechanism 18, the evaporation reflux channel 10 and the evaporation liquid storage tank 11 can realize efficient heat dissipation. The combination of the above three heat dissipation methods can effectively improve the heat dissipation efficiency of the first heat conducting plate 6 and the second heat conducting plate 7, and thus can improve the heat dissipation efficiency of the diode 4.

[0034] A thermal conductive silicone grease 19 is provided between the bottom surface of the diode 4 and the first heat conducting plate 6, a thermal conductive silicone grease 20 is provided between the top surface of the diode 4 and the second heat conducting plate 7, a cover 21 is provided at the top of the box body 1, and the cover 21 is connected to the box body 1 by screws;

[0035] The thermal conductive silicone grease 19 and the thermal conductive silicone grease 20 can improve the tightness of the first heat conductive plate 6 and the second heat conductive plate 7 and the diode 4, thereby improving the heat conduction efficiency.

[0036] The heat conducting assembly 15 is composed of a heat conducting arm 22, a plurality of heat conducting strips 23 and an arc-shaped heat conducting plate 24. One end of the heat conducting arm 22 is fixedly connected to the inside of the evaporation reflux channel 10, the arc-shaped heat conducting plate 24 is fixedly connected to the inside of the evaporation liquid storage tank 11, and the heat conducting strip 23 is fixedly connected between the heat conducting arm 22 and the arc-shaped heat conducting plate 24.

[0037] The heat conducting arm 22, the plurality of heat conducting strips 23 and the arc-shaped heat conducting plate 24 can realize rapid transfer of the internal temperature of the first heat conducting plate 6 and the second heat conducting plate 7, so that the internal temperatures of the first heat conducting plate 6 and the second heat conducting plate 7 are both in a balanced state.

[0038] Embodiment 2, based on embodiment 1, Figure 1 , Figure 2 , Figure 4 , Figure 5 and Figure 7 It is given that the air-cooling heat dissipation mechanism 16 is composed of a fan 25, an air filter 26, a first air inlet pipe 27, a first air exhaust pipe 28, a second air inlet pipe 29, a second air exhaust pipe 30 and a cooling air duct 31. The fan 25 is fixedly connected to the bottom end of one side of the box body 1, and the air filter 26 is fixedly connected to the exhaust port of the fan 25. The first air inlet pipe 27, the second air inlet pipe 29 and the cooling air duct 31 are all fixedly connected to one side of the air filter 26. The first air inlet pipe 27 and the first air exhaust pipe 28 are respectively connected to the two ends of the first heat conducting plate 6 and the second heat conducting plate 7 and are connected to the air cooling flow channel 8. The cooling air duct 31 is sleeved on the heat pipe heat dissipation mechanism 18. The fan 25 is fixedly connected to the box body 1 through a fan seat 32. A protective net 33 is fixedly provided at one end of the first exhaust pipe 28, the second exhaust pipe 30 and the cooling air duct 31 away from the fan 25.

[0039] When the air-cooling heat dissipation mechanism 16 is working, air is supplied by the fan 25, and the incoming air is filtered by the air filter 26 to improve the cleanliness of the incoming air and avoid clogging of the air-cooling flow channel 8. The incoming air flows through the air-cooling flow channel 8 to directly dissipate heat inside the first heat conducting plate 6 and the second heat conducting plate 7. The cooling air duct 31 can achieve efficient heat dissipation at the condensation end of the heat pipe heat dissipation mechanism 18, and the protective net 33 can prevent debris from entering the first exhaust duct 28, the second exhaust duct 30 and the cooling air duct 31.

[0040] Embodiment 3, based on embodiment 1, Figure 1 , Figure 2 , Figure 4 , Figure 7 and Figure 8 It is shown that the heat pipe heat dissipation mechanism 18 is composed of a plurality of L-shaped heat pipes 1 34 and a plurality of L-shaped heat pipes 2 35. The L-shaped heat pipes 1 34 are respectively fixedly connected to the two ends of the first heat conducting plate 6 and communicate with the evaporation reflux channel 10. The L-shaped heat pipes 2 35 are respectively fixedly connected to the two ends of the second heat conducting plate 7 and communicate with the evaporation reflux channel 10. The top ends of the sides of the L-shaped heat pipes 1 34 and the L-shaped heat pipes 2 35 are respectively fixedly provided with a plurality of heat dissipation fins 1 36 and a plurality of heat dissipation fins 2 37. The heat dissipation fins 1 36 and the heat dissipation fins 2 37 are both located inside the cooling air duct 31.

[0041] When the temperature of the first heat conducting plate 6 and the second heat conducting plate 7 rises, the evaporative liquid inside the evaporative liquid storage tank 11 will evaporate, and the evaporation process will absorb heat, so that the heat on the first heat conducting plate 6 and the second heat conducting plate 7 will be taken away by the steam, and the steam will enter the inside of the L-shaped heat pipe 1 34 and the L-shaped heat pipe 2 35, and move to the condensation end of the L-shaped heat pipe 1 34 and the L-shaped heat pipe 2 35. At this time, the cooling air duct 31 is used for air cooling. After the steam is condensed, it refluxes along the inner wall of the L-shaped heat pipe 1 34 and the L-shaped heat pipe 2 35, thereby forming a cycle, effectively improving the heat dissipation efficiency, and the heat dissipation fins 1 36 and the heat dissipation fins 2 37 can accelerate the heat dissipation of the L-shaped heat pipe 1 34 and the L-shaped heat pipe 2 35.

[0042] Embodiment 4, based on embodiment 1, Figure 1 , Figure 2 , Figure 4 and Fig. 9The liquid cooling mechanism 17 is composed of a liquid storage tank 38, a circulation pump 39, a liquid extraction pipe 40, a liquid inlet pipe 41, two liquid inlet branches 42, two liquid discharge branches 43, a liquid discharge pipe 44 and a cooling coil 45. The liquid storage tank 38 is fixedly connected to the bottom end of the box body 1, the circulation pump 39 is fixedly connected to the top of the liquid storage tank 38, the liquid extraction pipe 40 is connected between the liquid storage tank 38 and the circulation pump 39, and the liquid inlet pipe 41 is fixedly connected to the circulation pump 39. The liquid outlet, the liquid inlet branch pipe 42 is connected to the liquid inlet pipe 41, the liquid inlet branch pipe 42 and the liquid discharge branch pipe 43 are respectively fixedly connected to the two ends of the first heat conducting plate 6 and the second heat conducting plate 7 and communicate with the liquid cooling channel 9, the liquid discharge pipe 44 is connected to the liquid discharge branch pipe 43, the cooling coil 45 is connected between the liquid discharge pipe 44 and the liquid storage tank 38, and a plurality of partitions 46 are fixedly arranged inside the liquid storage tank 38, and an S-shaped flow channel 47 is formed between the partitions 46 and the liquid storage tank 38;

[0043] When the liquid cooling mechanism 17 is working, the cooling liquid inside the liquid storage tank 38 is extracted through the circulation pump 39 and the liquid extraction pipe 40, and the cooling liquid enters the liquid cooling channel 9 inside the first heat conducting plate 6 and the second heat conducting plate 7 through the liquid inlet pipe 41 and the two liquid inlet branches 42, so as to realize liquid cooling and heat dissipation of the first heat conducting plate 6 and the second heat conducting plate 7, and then the cooling liquid enters the interior of the cooling coil 45 through the two liquid discharge branches 43 and the liquid discharge pipe 44, and the cooling of the cooling liquid is realized through the cooling coil 45. In actual use, a cooling fan can also be set on the side of the cooling coil 45 to accelerate the heat dissipation. The cooling liquid after heat dissipation flows back to the interior of the liquid storage tank 38, and the flow path of the cooling liquid inside the liquid storage tank 38 can be controlled by the S-shaped channel 47, so that the cooling liquid can also be cooled inside the liquid storage tank 38.

[0044] During operation, by providing the first heat conducting plate and the second heat conducting plate, the first heat conducting plate can be fitted with the top and bottom surfaces of the diode to achieve sufficient heat dissipation of the diode. By providing an air-cooling flow channel, an arc-shaped groove, a V-shaped guide plate, an air-cooling transformer channel, and an air-cooling heat dissipation mechanism consisting of a fan, an air filter, a first air inlet pipe, a first air exhaust pipe, a second air inlet pipe, a second air exhaust pipe, and a cooling air pipe, the first heat conducting plate and the second heat conducting plate can be air-cooled and heat dissipated. Since the arc-shaped grooves are equidistantly arranged, the spacing of the V-shaped guide plates decreases from the air inlet side to the air exhaust side in sequence, so that the air intake process can achieve multiple compressions, the wind pressure increases in the compression process, and the wind speed becomes faster, thereby reducing the temperature of the wind and further improving the air cooling efficiency. By providing an evaporation reflux channel, an evaporation liquid storage tank, an evaporation liquid, a heat conducting component, and a plurality of L-shaped heat pipes and a plurality of L The heat pipe heat dissipation mechanism composed of the L-shaped heat pipe 1 and the L-shaped heat pipe 2 can realize efficient heat conduction to the first heat conducting plate and the second heat conducting plate by utilizing the reaction of evaporation absorbing heat and condensation releasing heat, thereby realizing efficient heat dissipation of the diode. Since the top ends of the L-shaped heat pipe 1 and the L-shaped heat pipe 2 are inserted into the interior of the cooling air duct, and the heat dissipation fin 1 and the heat dissipation fin 2 are both located inside the cooling air duct, the L-shaped heat pipe 1, the L-shaped heat pipe 2, the heat dissipation fin 1 and the heat dissipation fin 2 can be air-cooled and dissipated; by providing a liquid cooling flow channel and a liquid cooling heat dissipation mechanism composed of a liquid storage tank, a circulating pump, a liquid suction pipe, a liquid inlet pipe, two liquid inlet branches, two liquid discharge branches, a liquid discharge pipe and a cooling coil, liquid cooling circulation heat dissipation can be realized for the first heat conducting plate and the second heat conducting plate, thereby further improving the heat dissipation efficiency of the first heat conducting plate and the second heat conducting plate, thereby improving the heat dissipation efficiency of the diode.

Claims

1. A photovoltaic junction box with a built-in intelligent temperature control system, comprising a box body (1), characterized in that: An incoming cable (2) is inserted into the bottom end of one side of the box body (1), and an outgoing cable (3) is inserted into the bottom end of the other side of the box body (1). A diode (4) connected to the incoming cable (2) and the outgoing cable (3) is arranged in the middle position inside the box body (1). A temperature sensor (5) is arranged on one side of the diode (4). A first heat conducting plate (6) located at the bottom end of the diode (4) and a second heat conducting plate (7) located at the top end of the diode (4) are arranged inside the box body (1). An air cooling channel (8), a plurality of liquid cooling channels (9), an evaporation reflux channel (10) and a plurality of evaporation liquid storage tanks (11) are arranged inside the first heat conducting plate (6) and the second heat conducting plate (7). A plurality of arc-shaped grooves (12) are arranged on the side of the air cooling channel (8) close to the diode (4). The arc-shaped grooves (12) are arranged at equal distances. A plurality of arc-shaped grooves (12) are fixedly arranged on the side of the air cooling channel (8) away from the diode (4). (12) a V-shaped guide plate (13) matched with the air intake side (12), the spacing of the V-shaped guide plate (13) decreases from the air intake side to the air exhaust side, an air-cooling pressure-changing channel (14) is formed between the V-shaped guide plate (13) and the arc-shaped groove (12), the evaporation return channel (10) is connected with the evaporation liquid storage tank (11), the interior of the evaporation liquid storage tank (11) is filled with evaporation liquid, a heat-conducting component (15) is fixedly arranged inside the evaporation liquid storage tank (11), and the box body (1) is sequentially interspersed with An air-cooling heat dissipation mechanism (16), a liquid-cooling heat dissipation mechanism (17) and a heat pipe heat dissipation mechanism (18) are provided. The air-cooling heat dissipation mechanism (16) is connected to an air-cooling flow channel (8), the liquid-cooling heat dissipation mechanism (17) is connected to a liquid-cooling flow channel (9), the heat pipe heat dissipation mechanism (18) is connected to an evaporation reflux channel (10), the heat pipe heat dissipation mechanism (18) is inserted into the air-cooling heat dissipation mechanism (16), and an intelligent temperature controller (48) is fixedly provided on one side of the liquid-cooling heat dissipation mechanism (17).

2. A photovoltaic junction box with a built-in intelligent temperature control system according to claim 1, characterized in that: Thermally conductive silicone grease 1 (19) is provided between the bottom surface of the diode (4) and the first thermally conductive plate (6), and thermally conductive silicone grease 2 (20) is provided between the top surface of the diode (4) and the second thermally conductive plate (7).

3. A photovoltaic junction box with a built-in intelligent temperature control system according to claim 1, characterized in that: A cover body (21) is provided at the top end of the box body (1), and the cover body (21) and the box body (1) are connected via screws.

4. The photovoltaic junction box with a built-in intelligent temperature control system according to claim 1, characterized in that: The heat conduction assembly (15) is composed of a heat conduction arm (22), a plurality of heat conduction strips (23) and an arc-shaped heat conduction plate (24); one end of the heat conduction arm (22) is fixedly connected to the inside of the evaporation reflux channel (10); the arc-shaped heat conduction plate (24) is fixedly connected to the inside of the evaporation liquid storage tank (11); and the heat conduction strip (23) is fixedly connected between the heat conduction arm (22) and the arc-shaped heat conduction plate (24).

5. The photovoltaic junction box with a built-in intelligent temperature control system according to claim 1, characterized in that: The air-cooling heat dissipation mechanism (16) is composed of a fan (25), an air filter (26), a first air inlet pipe (27), a first air exhaust pipe (28), a second air inlet pipe (29), a second air exhaust pipe (30) and a cooling air pipe (31); the fan (25) is fixedly connected to the bottom end of one side of the box body (1); the air filter (26) is fixedly connected to the air exhaust port of the fan (25); the first air inlet pipe (27), the second air inlet pipe (29) and the cooling air pipe (31) are all fixedly connected to one side of the air filter (26); the first air inlet pipe (27) and the first air exhaust pipe (28) are respectively connected to the two ends of the first heat conducting plate (6) and the second heat conducting plate (7) and are connected to the air-cooling flow channel (8); and the cooling air pipe (31) is sleeved on the heat pipe heat dissipation mechanism (18).

6. A photovoltaic junction box with a built-in intelligent temperature control system according to claim 5, characterized in that: The fan (25) is fixedly connected to the box body (1) via a fan seat (32), and a protective net (33) is fixedly provided at one end of the first exhaust duct (28), the second exhaust duct (30) and the cooling duct (31) away from the fan (25).

7. The photovoltaic junction box with a built-in intelligent temperature control system according to claim 5, characterized in that: The heat pipe heat dissipation mechanism (18) is composed of a plurality of L-shaped heat pipes (34) and a plurality of L-shaped heat pipes (35). The L-shaped heat pipes (34) are respectively fixedly connected to the two ends of the first heat conducting plate (6) and communicate with the evaporation reflux channel (10). The L-shaped heat pipes (35) are respectively fixedly connected to the two ends of the second heat conducting plate (7) and communicate with the evaporation reflux channel (10).

8. The photovoltaic junction box with a built-in intelligent temperature control system according to claim 7, characterized in that: A plurality of heat dissipation fins 1 (36) and a plurality of heat dissipation fins 2 (37) are fixedly arranged at the top ends of the sides of the L-shaped heat pipe 1 (34) and the L-shaped heat pipe 2 (35), respectively. The heat dissipation fins 1 (36) and the heat dissipation fins 2 (37) are both located inside the cooling air duct (31).

9. The photovoltaic junction box with a built-in intelligent temperature control system according to claim 1, characterized in that: The liquid cooling and heat dissipation mechanism (17) is composed of a liquid storage tank (38), a circulation pump (39), a liquid extraction pipe (40), a liquid inlet pipe (41), two liquid inlet branches (42), two liquid discharge branches (43), a liquid discharge pipe (44) and a cooling coil (45). The liquid storage tank (38) is fixedly connected to the bottom end of the box body (1), the circulation pump (39) is fixedly connected to the top end of the liquid storage tank (38), and the liquid extraction pipe (40) is connected to the liquid storage tank (38) and the circulation pump. (39), the liquid inlet pipe (41) is fixedly connected to the liquid outlet of the circulation pump (39), the liquid inlet branch pipe (42) is connected to the liquid inlet pipe (41), the liquid inlet branch pipe (42) and the liquid discharge branch pipe (43) are respectively fixedly connected to the two ends of the first heat conducting plate (6) and the second heat conducting plate (7) and are connected to the liquid cooling channel (9), the liquid discharge pipe (44) is connected to the liquid discharge branch pipe (43), and the cooling coil (45) is connected between the liquid discharge pipe (44) and the liquid storage tank (38).

10. A photovoltaic junction box with a built-in intelligent temperature control system according to claim 9, characterized in that: A plurality of partitions (46) are fixedly arranged inside the liquid storage tank (38), and an S-shaped flow channel (47) is formed between the partitions (46) and the liquid storage tank (38).

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