Groove type drying self-heating recovery device for photovoltaic cell production

Abstract

The invention discloses a groove type drying self-heating recovery device for photovoltaic cell production, and relates to the technical field of heat recovery, and the groove type drying self-heating recovery device comprises a supporting platform. According to the trough type drying self-heating recovery device for photovoltaic cell production, heated ambient air is fed into the drying assembly through pressurization of the first draught fan, so that cell pieces are dried, high-temperature and high-humidity air exchanges heat with the evaporator to become low-temperature and low-humidity gas, and then the low-temperature and low-humidity gas enters the condenser through the compressor to be subjected to heat exchange and temperature rise; the pressure and the temperature of gas subjected to heat exchange through the evaporator are generally low, internal energy of the gas can be increased through compression, the gas has enough energy to enter the condenser for next heat exchange, finally the gas enters the drying assembly to complete circulation, and when the temperature cannot meet the requirement, the electric heating bag is used in cooperation for auxiliary heating. The problem that when an existing drying device runs, a large amount of waste heat is not utilized, and consequently system power consumption is increased is solved.

Description

Technical Field

[0001] The invention relates to the technical field of heat recovery, and in particular to a trough-type drying self-heat recovery device for photovoltaic cell production. Background Art

[0002] Photovoltaic cells, also known as solar cells, are usually made of semiconductor materials such as silicon, cadmium telluride, copper indium gallium selenide, etc. Silicon is the most commonly used material at present because of its stable performance and relatively low cost. When sunlight shines on the surface of the cell, the energy of the photon is absorbed by the semiconductor material, allowing the electron to obtain enough energy to jump from the valence band to the conduction band, thereby generating electron-hole pairs inside the semiconductor. These electrons and holes move to both ends respectively under the action of the internal electric field to form current and voltage. In the manufacturing process of the battery cell, moisture may be introduced. The presence of moisture will affect the performance and quality of the battery cell, so it needs to be dried.

[0003] Existing, such as Chinese patent publication number: CN114939517A, discloses a cell drying and curing device, which belongs to the field of photovoltaic cell production technology. The drying and curing device includes a drying and curing transmission unit; the drying and curing transmission unit includes a drying and curing conveyor belt, a first support member and a second support member; the first support member and the second support member are arranged on the drying and curing conveyor belt for carrying horizontally placed cells and vertically placed cells respectively; the drying and curing conveyor belt is arranged in a drying and curing furnace, and is used to transfer the cells from the upstream of the drying and curing furnace to the downstream of the drying and curing furnace; the drying and curing transmission unit is configured to be able to selectively carry horizontally placed cells through the first support member alone or carry vertically placed cells through the second support member alone. In the drying and curing device of the present application, the transmission drying and curing methods of horizontally placed cells and the transmission drying and curing methods of vertically placed cells are included, which can meet different drying and curing speed requirements, and the drying and curing cost is relatively low.

[0004] However, in the prior art, drying is required in the current photovoltaic cell production process. Current drying equipment usually uses a heating pack to heat the air and then circulates it into the tank to dry the battery cells. During the circulation process, a large amount of hot air needs to be discharged and fresh air needs to be added to meet the humidity requirements in the tank. This results in a large amount of waste heat not being utilized, which increases the system power consumption.

[0005] Therefore, we proposed a trough type drying self-heating recovery device for photovoltaic cell production in order to solve the above problems. Summary of the invention

[0006] The purpose of the present invention is to provide a trough type drying self-heat recovery device for photovoltaic cell production to solve the problem that a large amount of waste heat is not utilized during operation of the existing drying device mentioned in the background art, thereby increasing system power consumption.

[0007] To achieve the above-mentioned objectives, the present invention provides the following technical solutions: a trough-type drying self-heating recovery device for photovoltaic cell production, comprising: a supporting platform, a mounting plate fixedly installed on the top of the supporting platform, a condenser and a compressor arranged on the top of the supporting platform, an evaporator arranged on the outer surface of the mounting plate, a connecting pipe fixedly connected to the first connecting end of the evaporator, one end of the connecting pipe fixedly installed on the first connecting end of the condenser, a mounting pipe fixedly connected to the second connecting end of the evaporator, one end of the mounting pipe fixedly connected to the first fixed end of the compressor, a fixed pipe fixedly connected between the second fixed end of the compressor and the second connecting end of the condenser, a delivery pipe fixedly connected to the third connecting end of the evaporator, an expansion valve arranged on one end of the delivery pipe, a guide pipe fixedly connected to one end of the expansion valve, and one end of the guide pipe fixedly connected to the third connecting end of the condenser.

[0008] Preferably, a first fan is arranged at the top of the support platform near the front surface, the output end of the first fan is fixedly connected to an air outlet pipe, the input end of the first fan is fixedly connected to an air inlet pipe, and the bottom of the support platform is fixedly connected to support columns near the four corners.

[0009] Preferably, a second fan is arranged at the top of the support platform near the rear surface, the output end of the second fan is fixedly connected to an exhaust pipe, one end of the exhaust pipe is fixedly connected to the fourth connection end of the evaporator, and the input end of the second fan is fixedly connected to an exhaust pipe.

[0010] Preferably, a drying component is fixedly installed on the top of the supporting platform near one side edge, and a heating component is fixedly installed on the top of the supporting platform near a corner.

[0011] Preferably, the heating assembly includes an air inlet box, and the fourth mounting end of the condenser is fixedly connected to an air supply pipe, one end of the air supply pipe passes through one side of the air inlet box to the interior, and one end of the air inlet pipe passes through the other side of the air inlet box to the interior.

[0012] Preferably, an electric heating pack is arranged inside the air intake box, and the electric heating pack is used to heat the ambient gas.

[0013] Preferably, a mounting cover is provided on the top of the air inlet box, and a plurality of air inlets for inhaling fresh air are provided on the top of the mounting cover.

[0014] Preferably, the drying assembly includes a drying tank, both ends of the exhaust pipe penetrate the drying tank to the inside, and a closing cover is provided on the top of the drying tank.

[0015] Preferably, an insert flower basket is arranged inside one side of the drying tank, and multiple ventilation holes are opened on the four outer surfaces of the insert flower basket. Multiple card plates are fixedly connected to the relative inner walls of the insert flower basket, and the multiple card plates are grouped into two, and battery cells are inserted between the inner walls of each two relative groups of the card plates.

[0016] Preferably, an air equalizing box is arranged inside the other side of the drying tank, a fixed cover is arranged on the top of the air equalizing box, the relative inner walls of the air equalizing box are fixedly connected with air equalizing plates, a plurality of drainage pipes are opened on the outer surface of one side of the air equalizing box, and the drainage pipes are used to introduce gas into the drying tank to dry the battery cells.

[0017] Compared with the prior art, the present invention has the following beneficial effects: 1. When in use, ambient air enters the heating component, and the heated ambient air is sent into the drying component through the pressurization of the first fan, thereby completing the drying of the battery cells. The high-temperature and high-humidity air exchanges heat with the evaporator to become low-temperature and low-humidity gas, and then enters the condenser through the compressor for heat exchange and temperature increase. The gas after heat exchange in the evaporator usually has low pressure and temperature. Compression can increase the internal energy of the gas, so that it has enough energy to enter the condenser for the next step of heat exchange, and finally enters the drying component to complete the cycle. When the temperature cannot meet the requirements, an electric heating pack is used for auxiliary heating, which solves the problem that a large amount of waste heat is not utilized during the operation of the existing drying device, thereby increasing the system power consumption.

[0018] 2. When in use, when the ambient air is sucked into the air intake box, it enters the interior of the air intake box through multiple air inlets. By energizing the electric heating pack, the heat inside the air intake box is increased, and the gas passing through the air intake box will be heated.

[0019] 3. When in use, the gas enters the gas-uniform box through the outlet pipe. Multiple gas-uniform plates are fixed inside the gas-uniform box to disperse the gas inside the gas-uniform box. Then the gas enters the drying tank through multiple drainage pipes. The gas inside the drying tank enters the insert flower basket through multiple vents. At this time, the battery cell is inserted between multiple card plates to complete the drying process of the battery cell. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a front perspective view of a trough type drying self-heating recovery device for photovoltaic cell production according to the present invention; Figure 2 A side perspective view of a trough-type drying self-heat recovery device for photovoltaic cell production according to the present invention; Figure 3 It is a corrosion stereogram of a trough type drying self-heat recovery device for photovoltaic cell production according to the present invention; Figure 4It is a perspective view of the structure of a heating component of a trough-type drying self-heating recovery device for photovoltaic cell production according to the present invention; Figure 5 It is a perspective view of the partial structure of the drying component of a trough-type drying self-heating recovery device for photovoltaic cell production according to the present invention; Figure 6 A partially cutaway perspective view of a drying component of a trough-type drying self-heating recovery device for photovoltaic cell production according to the present invention; Figure 7 It is a perspective view of the structure of a drying tank part of a tank-type drying self-heat recovery device for photovoltaic cell production according to the present invention; Figure 8 This is a three-dimensional view from another angle of the drying component part of the trough-type drying self-heating recovery device for photovoltaic cell production according to the present invention.

[0021] In the figure: 1. Drying assembly; 101. Drying trough; 102. Fixed cover; 103. Insert flower basket; 104. Closing cover; 105. Air distribution box; 106. Air distribution plate; 107. Drainage pipe; 108. Air vent; 109. Battery cell; 110. Card board; 2. Heating assembly; 201. Air inlet box; 202. Electric heating pack; 203. Mounting cover; 204. Air inlet; 3. Support platform; 4. Support column; 5. First fan; 6. Air outlet pipe; 7. Air inlet pipe; 8. Second fan; 9. Exhaust pipe; 10. Exhaust pipe; 11. Mounting plate; 12. Evaporator; 13. Connecting pipe; 14. Delivery pipe; 15. Expansion valve; 16. Drainage pipe; 17. Air delivery pipe; 18. Fixed pipe; 19. Condenser; 20. Compressor; 21. Mounting pipe. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the implementation regulations described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0023] Example 1: Reference Figure 1-8As shown, the present invention provides a technical solution: a trough type drying self-heating recovery device for photovoltaic cell production, comprising: a supporting platform 3, a mounting plate 11 is fixedly installed on the top of the supporting platform 3, a condenser 19 and a compressor 20 are arranged on the top of the supporting platform 3, an evaporator 12 is arranged on the outer surface of the mounting plate 11, a connecting pipe 13 is fixedly connected to the first connecting end of the evaporator 12, one end of the connecting pipe 13 is fixedly installed on the first connecting end of the condenser 19, a mounting pipe 21 is fixedly connected to the second connecting end of the evaporator 12, one end of the mounting pipe 21 is fixedly connected to the first fixing end of the compressor 20, a fixing pipe 18 is fixedly connected between the second fixing end of the compressor 20 and the second fixing end of the condenser 19, a delivery pipe 14 is fixedly connected to the third connecting end of the evaporator 12, and an expansion valve 1 is arranged at one end of the delivery pipe 14 5, one end of the expansion valve 15 is fixedly connected with a guide pipe 16, one end of the guide pipe 16 is fixedly connected to the third mounting end of the condenser 19, a first fan 5 is arranged on the top of the support platform 3 near the front surface, the output end of the first fan 5 is fixedly connected with an outlet pipe 6, the input end of the first fan 5 is fixedly connected with an inlet pipe 7, the bottom of the support platform 3 is fixedly connected with support columns 4 near the four corners, a second fan 8 is arranged on the top of the support platform 3 near the rear surface, the output end of the second fan 8 is fixedly connected with an exhaust pipe 10, one end of the exhaust pipe 10 is fixedly connected to the fourth connecting end of the evaporator 12, the input end of the second fan 8 is fixedly connected with an exhaust pipe 9, a drying component 1 is fixedly installed on the top of the support platform 3 near one side edge, and a heating component 2 is fixedly installed on the top of the support platform 3 near a corner.

[0024] In this embodiment, when in use, the first fan 5 and the second fan 8 are turned on. Under the suction of the first fan 5, the ambient air enters the heating component 2 and is then heated. The heated ambient air is sent into the drying component 1 by the pressurization of the first fan 5, thereby completing the drying of the battery cell 109. Then, water is mixed in the gas to form high-temperature and high-humidity air. At this time, under the pressurization of the second fan 8, the high-temperature and high-humidity air is sent into the heat pump. The entire heat pump is composed of an evaporator 12, an expansion valve 15, a condenser 19 and a compressor 20. The high-temperature and high-humidity air exchanges heat with the evaporator 12 to become low-temperature and low-humidity gas, and then passes through the compressor 20 to enter the condenser. The compressor 20 compresses the gas to increase its pressure and temperature. The gas after heat exchange in the evaporator 12 usually has a lower pressure and temperature. Compression can increase the internal energy of the gas so that it has enough energy to enter the condenser 19 for the next step of heat exchange. The expansion valve 15 can accurately control the flow of the refrigerant to ensure that the evaporator 12 can obtain an appropriate amount of refrigerant for heat exchange and temperature increase, and finally enter the drying component 1 to complete the cycle. When the temperature cannot meet the requirements, the electric heating package 202 is used for auxiliary heating, which solves the problem that a large amount of waste heat in the existing drying device is not utilized during operation, thereby increasing the power consumption of the system.

[0025] Embodiment 2: Figure 1-8 As shown, the heating component 2 includes an air inlet box 201, and the fourth mounting end of the condenser 19 is fixedly connected with the air supply pipe 17, one end of the air supply pipe 17 passes through one side of the air inlet box 201 to the inside, and one end of the air inlet pipe 7 passes through the other side of the air inlet box 201 to the inside, an electric heating bag 202 is arranged inside the air inlet box 201, and the electric heating bag 202 is used to heat the ambient gas, a mounting cover 203 is arranged on the top of the air inlet box 201, and a plurality of air inlets 204 for inhaling fresh air are opened on the top of the mounting cover 203, and the drying component 1 includes a drying tank 101, both ends of the exhaust pipe 9 pass through the drying tank 101 to the inside, a closing cover 104 is arranged on the top of the drying tank 101, and the drying tank 101 A plug-in flower basket 103 is arranged inside one side, and multiple ventilation holes 108 are opened on the outer surfaces of the four sides of the plug-in flower basket 103. Multiple card plates 110 are fixedly connected to the relative inner walls of the plug-in flower basket 103. The multiple card plates 110 are grouped into two, and battery cells 109 are inserted between the inner walls of each two opposite groups of card plates 110. An air-leveling box 105 is arranged inside the other side of the drying tank 101, and a fixed cover 102 is arranged on the top of the air-leveling box 105. Air-leveling plates 106 are fixedly connected to the relative inner walls of the air-leveling box 105. Multiple drainage pipes 107 are opened on the outer surface of one side of the air-leveling box 105, and the drainage pipes 107 are used to introduce gas into the drying tank 101 to dry the battery cells 109.

[0026] In the present embodiment, when in use, when the ambient air is sucked into the air inlet box 201, it enters the interior of the air inlet box 201 through multiple air inlets 204. By energizing the electric heating bag 202, the heat inside the air inlet box 201 is increased, and the gas passing through the air inlet box 201 will be heated and enter the interior of the air uniforming box 105 through the air outlet pipe 6. Multiple air uniforming plates 106 are fixed inside the air uniforming box 105 to disperse the gas inside the air uniforming box 105, and then enter the interior of the drying tank 101 through multiple drainage pipes 107. The gas inside the drying tank 101 will enter the interior of the insert flower basket 103 through multiple air vents 108. At this time, the battery cell 109 is inserted between the multiple card plates 110 to complete the drying process of the battery cell 109.

[0027] The method of use and working principle of this device: When in use, turn on the first fan 5 and the second fan 8. Under the suction of the first fan 5, the ambient air enters the heating component 2 and is then heated. The heated ambient air is sent into the drying component 1 through the pressurization of the first fan 5, thereby completing the drying of the battery cell 109. Then, water is mixed in the gas to form high-temperature and high-humidity air. At this time, under the pressurization of the second fan 8, the high-temperature and high-humidity air is sent into the heat pump. The entire heat pump is composed of an evaporator 12, an expansion valve 15, a condenser 19 and a compressor 20. The high-temperature and high-humidity air exchanges heat with the evaporator 12 to become low-temperature and low-humidity gas, and then enters the condenser 19 through the compressor 20 for heat exchange and temperature increase. The function of the compressor 20 is to compress the gas, thereby increasing its pressure and temperature. The gas after heat exchange in the evaporator 12 usually has a lower pressure and temperature. Compression can increase the internal energy of the gas, so that it has enough energy to enter the condenser 19 for the next step of heat exchange, expansion valve 15, and compressor 20. The valve 15 can accurately control the flow of the refrigerant to ensure that the evaporator 12 can obtain an appropriate amount of refrigerant for heat exchange and temperature rise, and finally enter the drying component 1 to complete the cycle. When the temperature cannot meet the requirements, the electric heating package 202 is used for auxiliary heating. When in use, when the ambient air is sucked into the air inlet box 201, it enters the air inlet box 201 through multiple air inlets 204. By energizing the electric heating package 202, the heat inside the air inlet box 201 is increased, and then the air passing through the air inlet box The gas of 201 will be heated and enter the interior of the gas uniforming box 105 through the gas outlet pipe 6. A plurality of gas uniforming plates 106 are fixed inside the gas uniforming box 105 to disperse the gas inside the gas uniforming box 105. The gas then passes through a plurality of drainage pipes 107 and enters the interior of the drying tank 101. The gas inside the drying tank 101 passes through a plurality of air vents 108 and enters the interior of the insert flower basket 103. At this time, the battery cell 109 is inserted between the plurality of card plates 110 to complete the drying process of the battery cell 109.

[0028] The wiring diagram of the electric heating package 202, the first fan 5, the second fan 8, the evaporator 12, the condenser 19 and the compressor 20 in the present invention is common knowledge in the field, and its working principle is a well-known technology. The model is selected according to the actual use, so the control method and wiring arrangement of the electric heating package 202, the first fan 5, the second fan 8, the evaporator 12, the condenser 19 and the compressor 20 will not be explained in detail.

[0029] Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A trough type drying self-heat recovery device for photovoltaic cell production, characterized in that: include: A support platform (3), a mounting plate (11) is fixedly mounted on the top of the support platform (3), a condenser (19) and a compressor (20) are arranged on the top of the support platform (3), an evaporator (12) is arranged on the outer surface of the mounting plate (11), a connecting pipe (13) is fixedly connected to the first connecting end of the evaporator (12), one end of the connecting pipe (13) is fixedly mounted on the first mounting end of the condenser (19), a second connecting end of the evaporator (12) is fixedly connected to the mounting pipe (21), and the mounting One end of the tube (21) is fixedly connected to a first fixed end of the compressor (20); a fixed tube (18) is fixedly connected between the second fixed end of the compressor (20) and the second mounting end of the condenser (19); a delivery tube (14) is fixedly connected to a third connection end of the evaporator (12); an expansion valve (15) is provided at one end of the delivery tube (14); one end of the expansion valve (15) is fixedly connected to a flow guide tube (16); and one end of the flow guide tube (16) is fixedly connected to the third mounting end of the condenser (19).

2. The trough type drying self-heat recovery device for photovoltaic cell production according to claim 1, characterized in that: A first fan (5) is arranged at the top of the support platform (3) near the front surface, the output end of the first fan (5) is fixedly connected to an air outlet pipe (6), the input end of the first fan (5) is fixedly connected to an air inlet pipe (7), and the bottom of the support platform (3) near the four corners is fixedly connected to support columns (4).

3. The trough type drying self-heat recovery device for photovoltaic cell production according to claim 2 is characterized in that: A second fan (8) is arranged at the top of the support platform (3) near the rear surface, the output end of the second fan (8) is fixedly connected to an exhaust pipe (10), one end of the exhaust pipe (10) is fixedly connected to a fourth connection end of the evaporator (12), and the input end of the second fan (8) is fixedly connected to an exhaust pipe (9).

4. The trough type drying self-heat recovery device for photovoltaic cell production according to claim 3 is characterized in that: A drying component (1) is fixedly mounted on the top of the support platform (3) near one side edge, and a heating component (2) is fixedly mounted on the top of the support platform (3) near a corner.

5. The trough type drying self-heat recovery device for photovoltaic cell production according to claim 4, characterized in that: The heating assembly (2) comprises an air intake box (201), the fourth mounting end of the condenser (19) being fixedly connected to an air supply pipe (17), one end of the air supply pipe (17) passing through one side of the air intake box (201) to the interior, and one end of the air intake pipe (7) passing through the other side of the air intake box (201) to the interior.

6. The trough type drying self-heat recovery device for photovoltaic cell production according to claim 5, characterized in that: An electric heating pack (202) is arranged inside the air inlet box (201), and the electric heating pack (202) is used to heat the ambient gas.

7. The trough type drying self-heat recovery device for photovoltaic cell production according to claim 6, characterized in that: A mounting cover (203) is disposed on the top of the air inlet box (201), and a plurality of air inlets (204) for inhaling fresh air are provided on the top of the mounting cover (203).

8. The trough type drying self-heat recovery device for photovoltaic cell production according to claim 7, characterized in that: The drying assembly (1) comprises a drying tank (101), both ends of the exhaust pipe (9) penetrate the drying tank (101) to the inside, and a closing cover (104) is provided on the top of the drying tank (101).

9. The trough type drying self-heat recovery device for photovoltaic cell production according to claim 8, characterized in that: An insert flower basket (103) is arranged inside one side of the drying tank (101); a plurality of ventilation holes (108) are provided on the four outer surfaces of the insert flower basket (103); a plurality of card plates (110) are fixedly connected to the opposite inner walls of the insert flower basket (103); the plurality of card plates (110) are grouped in pairs, and a battery sheet (109) is inserted between the inner walls of each pair of opposite groups of card plates (110).

10. The trough type drying self-heat recovery device for photovoltaic cell production according to claim 9, characterized in that: An air-homogenizing box (105) is arranged inside the other side of the drying tank (101), a fixed cover (102) is arranged on the top of the air-homogenizing box (105), air-homogenizing plates (106) are fixedly connected to the opposite inner walls of the air-homogenizing box (105), and a plurality of drainage pipes (107) are provided on the outer surface of one side of the air-homogenizing box (105), and the drainage pipes (107) are used to introduce gas into the drying tank (101) to dry the battery cells (109).

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