An anti-oxidation device for heterojunction low-temperature welding strip

Abstract

The invention discloses an anti-oxidation device for heterojunction low-temperature welding strip, comprising a mounting bracket, an anti-oxidation tube, a linear guide rail, an inlet guide wheel, an outlet guide wheel and an annealing water tank, wherein the linear guide rail is vertically arranged on the mounting bracket, the anti-oxidation tube is arranged on the linear guide rail, the annealing water tank is arranged below the anti-oxidation tube, a floating part is arranged at the lower port of the anti-oxidation tube, so that the anti-oxidation tube floats on the water in the annealing water tank; the inlet guide wheel is arranged on the mounting bracket and is located at the upper end of the anti-oxidation tube, the outlet guide wheel is arranged in the annealing water tank, the base belt is guided to pass through the anti-oxidation tube through the inlet guide wheel and the outlet guide wheel without contacting the inner wall, the inlet guide wheel and the outlet guide wheel are connected to a power supply, and the base belt is short-circuited for heating, and a nitrogen injection port is arranged at the inlet end of the anti-oxidation tube. The floating anti-oxidation tube is matched with the floating part, and moves synchronously with the change of the liquid level, and the upper end is adjusted by a fixed sleeve to adjust the length of the anti-oxidation tube to ensure that the base belt does not contact the air.

Description

Technical Field

[0001] The invention relates to the photovoltaic field, and in particular to an anti-oxidation device for a low-temperature heterojunction welding strip. Background Art

[0002] In the preparation process of photovoltaic welding tape, the base tape needs to be annealed first. The annealing process is to heat the base tape and then quickly cool it in water. During the heating process, the base tape is exposed to the air at high temperature and is prone to oxidation. The oxidized base tape does not meet the production standards. Summary of the invention

[0003] In view of the defects of the above-mentioned prior art, the main purpose of the present invention is to overcome the shortcomings of the prior art, and discloses an anti-oxidation device for heterojunction low-temperature welding strip, comprising a mounting bracket, an anti-oxidation tube, a linear guide rail, an inlet guide wheel, an outlet guide wheel and an annealing water tank, wherein the linear guide rail is vertically arranged on the mounting bracket, the anti-oxidation tube is arranged on the linear guide rail, the annealing water tank is arranged below the anti-oxidation tube, and a floating portion is arranged at the lower port of the anti-oxidation tube so that the anti-oxidation tube floats on the water in the annealing water tank; the inlet guide wheel is arranged on the mounting bracket and is located at the upper end of the anti-oxidation tube, the outlet guide wheel is arranged in the annealing water tank, the base tape is guided to pass through the anti-oxidation tube through the inlet guide wheel and the outlet guide wheel without contacting the inner wall, the inlet guide wheel and the outlet guide wheel are connected to a power supply, and are heated by short-circuiting the base tape, and a nitrogen injection port is arranged at the inlet end of the anti-oxidation tube.

[0004] Furthermore, it also includes a fixing sleeve, which is arranged on the upper end of the anti-oxidation tube and fixedly connected to the mounting bracket.

[0005] Furthermore, the annealing water tank comprises:

[0006] The water tank body is used to store water for annealing;

[0007] A water replenishing mechanism, used for quickly replenishing the water in the water tank body;

[0008] A liquid level sensor is used to sense the liquid level in the water tank body, and trigger a water replenishment mechanism when the liquid level is lower than the minimum liquid level;

[0009] The water replenishment mechanism includes a water replenishment tank, a water tank door, a connecting rod, a connecting piece, a pry plate and an actuator. The water replenishment tank is provided with a water replenishment port and a regulating valve, and the regulating valve is used to control the water replenishment speed. The water tank door is hinged at the water replenishment port and is used to open and close the water replenishment port. The pry plate is rotatably arranged on the water replenishment tank. A socket is arranged at the bottom of the water replenishment tank. One end of the connecting rod is connected to the pry plate, and the other end is pluggable and arranged in the socket. The connecting piece connects the water tank door and the connecting rod, and the actuator is used to pry the pry plate to swing.

[0010] Furthermore, a partition is arranged in the water replenishment tank to form a water replenishment area and a water storage area, and a first overflow port connecting the water replenishment area and the water storage area is arranged on the partition; the annealing water tank is swingably arranged on the water tank body, and a limit block is arranged under the water replenishment tank, and the limit block is used to limit the swing amplitude of the water replenishment tank.

[0011] Furthermore, the swing angle range of the water replenishment tank is between -15° and 15°.

[0012] Furthermore, a contact switch is provided on the limit block, and the opening and closing of the contact switch is controlled by the water replenishment tank.

[0013] Furthermore, the distance between the swing center of the water replenishment tank and the end of the water replenishment area is smaller than the distance between the swing center of the water replenishment tank and the end of the water storage area.

[0014] Furthermore, a second overflow outlet is arranged on the side wall of the water storage area.

[0015] Furthermore, the connecting rod is rotatably connected to the pry plate.

[0016] Furthermore, it also includes a liquid level indicating tube, which is connected with the water tank body to form a U-shaped tube, and the liquid level sensor is installed on the liquid level indicating tube.

[0017] Beneficial effects achieved by the present invention:

[0018] The present invention adopts a floating anti-oxidation tube in conjunction with a floating part, which moves synchronously with the change of the liquid level to ensure that the lower section of the anti-oxidation tube baseband will not contact the air; at the same time, it cooperates with a fixed sleeve to ensure that the upper section of the baseband will not contact the air; and ensure the annealing quality of the baseband. By adding a water replenishment mechanism, the water tank body can be replenished quickly to avoid the liquid level being too low and unable to meet the annealing requirements of the photovoltaic welding strip. The water tank door in the water replenishment mechanism is closed by cooperating with a connecting rod and a jack. The electromagnet is cleverly used as an actuator to drive the pry plate to swing. When the water tank door needs to be opened, the electromagnet is controlled to be energized to generate suction, and the power can be cut off after the pry plate is tilted up, which saves resources, and the water tank door opens quickly and has high reliability. The water replenishment tank is swung and connected to the water tank body. When the water replenishment area is filled with water too quickly, the water storage area drops and the water replenishment area rises, avoiding the liquid in the water replenishment area from overflowing to one end of the water replenishment area. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a structural schematic diagram of an anti-oxidation device for a heterojunction low-temperature solder strip according to the present invention;

[0020] Figure 2 It is a schematic diagram of the three-dimensional structure of the annealing water tank;

[0021] Figure 3 for Figure 2 A structural diagram from another perspective;

[0022] The reference numerals are as follows:

[0023] 1. Mounting bracket, 2. Anti-oxidation pipe, 3. Inlet guide wheel, 4. Outlet guide wheel, 5. Annealing water tank, 6. Fixed sleeve, 9. Base belt, 21. Floating part, 51. Water tank body, 52. Water replenishment mechanism, 53. Liquid level sensor, 54. Liquid level indicator tube, 521. Water replenishment water tank, 522. Water tank door, 523. Connecting rod, 524. Connecting piece, 525. Pry plate, 526. Actuator, 527. Partition, 528. Limit block, 5211. Water replenishment port, 5212. Water replenishment hole, 5213. Water replenishment area, 5214. Water storage area, 5215. Second overflow port, 5271. First overflow port. DETAILED DESCRIPTION

[0024] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0025] An anti-oxidation device for heterojunction low-temperature solder strip, such as Figure 1As shown, it includes a mounting bracket 1, an anti-oxidation tube 2, a linear guide rail (not shown), an inlet guide wheel 3, an outlet guide wheel 4 and an annealing water tank 5. The linear guide rail is vertically arranged on the mounting bracket 1, the anti-oxidation tube 2 is arranged on the linear guide rail, and the annealing water tank 5 is arranged below the anti-oxidation tube 2. A floating portion 21 is arranged at the lower end of the anti-oxidation tube 2, so that the anti-oxidation tube 2 floats on the water in the annealing water tank 5, and is synchronously adjusted up and down along the linear guide rail according to the water level in the annealing water tank 5 to prevent the liquid level from being too low, causing the lower section of the base belt 9 to be exposed to the air. The inlet guide wheel 3 is arranged on the mounting bracket 1 and is located at the upper end of the anti-oxidation tube 2. The outlet guide wheel 4 is arranged in the annealing water tank 5. The base belt 9 is guided through the anti-oxidation tube 2 by the inlet guide wheel 3 and the outlet guide wheel 4 without contacting the inner wall. The inlet guide wheel 3 and the outlet guide wheel 4 are connected to the power supply, and the base belt 9 is connected to the inlet guide wheel 3 and the outlet guide wheel 4, causing the power supply to be short-circuited, and the heating of the base belt 9 has been achieved. A nitrogen injection port is provided at the inlet end of the anti-oxidation tube 2 to fill the anti-oxidation tube 2 with nitrogen, thereby providing a sufficient heating time for the base tape 9 and ensuring inert gas protection during the process to prevent oxidation of the surface of the base tape 9.

[0026] In one embodiment, if Figure 1 As shown, it also includes a fixing sleeve 6, which is sleeved on the upper end of the anti-oxidation tube 2 and fixedly connected to the mounting bracket 1. Through the fixing sleeve 6, when the liquid level in the annealing water tank 5 decreases, the anti-oxidation tube 2 will be lowered synchronously with the decrease in the liquid level, and the fixing sleeve 6 is used to extend the length of the anti-oxidation tube 2.

[0027] In one embodiment, the annealing water tank, such as Figure 1-3 As shown, including:

[0028] The water tank body 51 is used to store water for annealing;

[0029] A water replenishing mechanism 52, used for quickly replenishing water in the water tank body;

[0030] The liquid level sensor 53 is used to sense the liquid level in the water tank body 51 , and when the liquid level is lower than the minimum liquid level, the water replenishment mechanism 52 is triggered.

[0031] Specifically, the water replenishment mechanism 52 includes a water replenishment tank 521, a water tank door 522, a connecting rod 523, a connecting piece 524, a pry plate 525 and an actuator 526. A water replenishment port 5211 and a water replenishment hole 5212 are provided on one side wall of the water replenishment tank 521. The water tank door 522 is hinged at the water replenishment port 5211, and the water replenishment port 5211 is opened and closed by the water tank door 522. When the water tank door 522 is opened, the water in the water replenishment tank 521 is quickly replenished into the water tank body 51 through the water replenishment port 5211. In addition, the water in the water replenishment tank 22 is replenished into the water tank body 51 at a uniform speed through the water replenishment port 212. Preferably, a regulating valve (not shown) can also be provided, and the regulating valve is installed at the water replenishment hole 5212, and the water replenishment speed is adjusted by the regulating valve. The pry plate 525 is rotatably arranged on the water replenishment tank 521, and a socket is arranged at the bottom of the water replenishment tank 521. One end of the connecting rod 523 is connected to the pry plate 525, and the other end is pluggable and arranged in the socket. The connecting piece 524 connects the water tank door 522 and the connecting rod 523, and the pry plate 525 is pried by the actuator 526 to swing. When the water tank door 522 needs to be closed, since the water tank door 522 is connected to the connecting rod 523 through the connecting piece 524, the connecting rod 523 is inserted into the socket, and the traction force for closing is provided to the water tank door 522 through the connecting piece 524. Among them, the connecting piece 524 can be selected from elastic components, such as springs, rubber bands, etc. As long as it is necessary to ensure that the water tank door 522 is closed, it can be used as the connecting piece 524.

[0032] In the above embodiment, if Figure 1-3 As shown, the water replenishment tank 521 can be set at an angle to increase the water replenishment speed.

[0033] In one embodiment, if Figure 1-3As shown, a partition 527 is arranged in the water replenishment tank 521 to form a water replenishment area 5213 and a water storage area 5214, and a first overflow port 5271 connecting the water replenishment area 5213 and the water storage area 5214 is arranged on the partition 527; the annealing water tank 21 is swingably arranged on the water tank body 51, and a limit block 528 is arranged below the water replenishment tank 521, and the limit block 528 is used to limit the swing amplitude of the water replenishment tank 521. First, the water replenishment tank 521 is swingably arranged so that the water replenishment tank 521 can adjust the tilt angle and tilt direction. Secondly, the water replenishment area 5213 is set to determine the amount of water for rapid water replenishment; while the water tank body 51 is continuously replenished with water through the regulating valve, the water replenishment area 5213 is also continuously replenished with water; when the amount of water is too much, the water in the water replenishment area 5213 flows into the water storage area 5214 through the first overflow port 5271 to prevent the water in the water replenishment area 5213 from overflowing out of the water replenishment tank 521. When the water on one side of the water storage area 5214 reaches a certain amount, the weight of the water storage area 5214 is greater than the weight of the water replenishment area 5213, and the water replenishment tank 521 swings to the other side, that is, the side wall of the water replenishment tank 521 on the side of the water storage area 5214 is lower than the side wall of the water replenishment area 5213, so as to ensure that the water in the water replenishment tank 521 overflows from the side of the water storage area 5214 to avoid affecting the normal use of the water tank body 51. The limit block 528 is a concave structure, and the protrusions at both ends are arranged on both sides of the swing axis of the water replenishment tank 521 to achieve the swing angle of the water replenishment tank 521.

[0034] In the above embodiment, if Figure 1-3 As shown, the swing angle range of the water replenishment tank 521 is between -15° and 15°. By limiting the swing angle, the inclination angle is prevented from being too large, and the water volume in the water replenishment tank 521 is reduced.

[0035] In the above embodiment, if Figure 1-3 As shown, a contact switch is provided on the limit block 528, and the contact switch is controlled to open and close by the water replenishment tank 521. Preferably, it can be used simultaneously with the alarm device; that is, when the contact switch is installed on the side of the limit block 528 located in the water storage area 5214, when one end of the water storage tank 214 is heavier, the end swings downward to the contact switch, prompting the electric shock switch to transmit a signal to the PLC, so that the alarm device alarms. Among them, the alarm device can be a buzzer, a warning light, etc. Of course, the contact switch can also be installed on the side of the limit block 528 located in the water replenishment area 5213, that is, when the contact switch is in the open state, the alarm device will not be triggered; when the water replenishment tank 521 swings away from the contact switch, the contact switch changes from the open state to the closed state, thereby triggering the alarm device. Through the sound and light alarm, a fault warning is issued to the staff in time.

[0036] In the above embodiment, if Figure 1-3As shown, the distance between the swing center of the water replenishment tank 521 and the end of the water replenishment area 5213 is less than the distance between the swing center of the water replenishment tank 521 and the end of the water storage area 5214. By using the lever principle, the water storage area 5214 accumulates less water than the water replenishment area 5213 to achieve the swing of the water replenishment tank 521.

[0037] In the above embodiment, if Figure 1-3 As shown, a second overflow port 5215 is provided on the side wall of the water storage area 5214. The second overflow port 5215 is connected to other water storage equipment through a hose to prevent the water in the water replenishment tank 521 from overflowing.

[0038] In the above embodiment, if Figure 1-3 As shown, the connecting rod 523 is rotatably connected to the pry plate 525. When the connecting rod 523 is inserted into the socket, the pry plate 525 and the socket are used to position the connecting rod 523, so as to pull the water tank door 522 to close; when the pry plate 525 is pulled upward by the driving force of the actuator 526, the connecting rod 523 is separated from the socket, and the water tank door 522 is opened by the pressure of the water in the water replenishment area 5213, and the connecting rod 523 and the pry plate 525 are rotatably connected, so as to reduce the resistance of the water tank door 522 to open.

[0039] In the above embodiment, if Figure 1-3 As shown, the partition 527 is detachably installed in the water replenishment tank 521. Specifically, symmetrical slots are provided on the opposite side walls of the water replenishment tank 521, and slots are also provided at the bottom thereof, and the partition 527 matches the slots to realize the plug-in installation of the partition 527.

[0040] In one embodiment, if Figure 1-3 As shown, it also includes a liquid level indicator tube 54, which is connected to the water tank body 51 to form a U-shaped tube, and the liquid level sensor 53 is installed on the liquid level indicator tube 54. The independently arranged liquid level indicator tube 54 reduces the influence of the fluctuation of the water in the water tank body 51 on the liquid level detection.

[0041] In one embodiment, if Figure 1-3 As shown, the actuator 526 is installed below the pry plate 525. The actuator 526 can be an electromagnet, which attracts one end of the pry plate 525 so that the other end is tilted upward to pull the connecting rod 523 out of the socket.

[0042] A cover plate may be provided on the water replenishment tank 521 to prevent the water in the water replenishment tank 521 from shaking and splashing out when the water replenishment tank 521 is swinging.

[0043] When the present invention is used, Figure 1-3As shown, the base belt 9 enters the anti-oxidation tube 2 through the inlet guide wheel 3 and leaves the anti-oxidation tube 2 from the outlet guide wheel 4. The base belt 9 heated by the inlet guide wheel 3 and the outlet guide wheel 4 enters the water for annealing, and the lower end of the anti-oxidation tube 2 is always sealed with the water in the annealing water tank 5.

[0044] Among them, in the initial state of the annealing water tank, the water replenishment water tank 521 has one side of the water replenishment area 5213 tilted downward, and supported on the limit block 528, water is poured into the water tank body 51, and water is uniformly poured into the water replenishment area 5213, and the water replenishment speed of the water replenishment water tank 521 to the water tank body 51 is controlled by controlling the regulating valve; preferably, the water filling speed of the water replenishment area 5213 is adjusted to be the same as the water filling speed of the water replenishment area 5213 to the water tank body 51. When the water replenishment speed of the water replenishment area 5213 is too fast, the liquid level in the water replenishment area 5213 reaches a certain height and flows into the water storage area 5214 through the first overflow port 5271 until the downward pressure of the water storage area 5214 can lift the water replenishment area 5213, and at the same time, the contact switch is turned on, the alarm device is triggered, and the water replenishment area 5213 is stopped from being filled with water to prevent the waste of water resources. If the staff fails to handle it in time, the liquid level in the water tank body 51 will gradually decrease after use. When the liquid level sensor 53 detects that the liquid level has reached the lowest point, the actuator 526 is triggered through the PLC to drive the pry plate 525 to tilt up, so that the connecting rod 523 is separated from the socket. The water tank door 522 is opened, and the water in the water replenishment area 5213 is quickly replenished into the water tank body 51 through the water replenishment port 5211. If the water consumption rate in the water tank body 51 is greater than the water replenishment rate, the liquid level in the water tank body 51 will also decrease. When the liquid level drops to the lowest point, the actuator 526 will also be triggered to open the water tank door 26 for water replenishment.

[0045] The above are only preferred embodiments of the present invention and are not intended to limit the scope of implementation of the present invention. If the present invention is modified or replaced by equivalents without departing from the spirit and scope of the present invention, they should all be included in the protection scope of the claims of the present invention.

Claims

1. An anti-oxidation device for a heterojunction low-temperature solder strip, characterized in that: It includes a mounting bracket, an anti-oxidation tube, a linear guide rail, an inlet guide wheel, an outlet guide wheel and an annealing water tank, wherein the linear guide rail is vertically arranged on the mounting bracket, the anti-oxidation tube is arranged on the linear guide rail, the annealing water tank is arranged below the anti-oxidation tube, and a floating portion is arranged at the lower port of the anti-oxidation tube so that the anti-oxidation tube floats on the water in the annealing water tank; the inlet guide wheel is arranged on the mounting bracket and is located at the upper end of the anti-oxidation tube, the outlet guide wheel is arranged in the annealing water tank, the base belt is guided to pass through the anti-oxidation tube through the inlet guide wheel and the outlet guide wheel without contacting the inner wall, the inlet guide wheel and the outlet guide wheel are connected to a power supply, and are heated by short-circuiting the base belt, and a nitrogen injection port is arranged at the inlet end of the anti-oxidation tube; The annealing water tank comprises: The water tank body is used to store water for annealing; A water replenishing mechanism, used for quickly replenishing the water in the water tank body; A liquid level sensor is used to sense the liquid level in the water tank body, and trigger a water replenishment mechanism when the liquid level is lower than the minimum liquid level; The water replenishment mechanism includes a water replenishment tank, a water tank door, a connecting rod, a connecting piece, a pry plate and an actuator. The water replenishment tank is provided with a water replenishment port and a regulating valve, and the regulating valve is used to control the water replenishment speed. The water tank door is hinged at the water replenishment port and is used to open and close the water replenishment port. The pry plate is rotatably arranged on the water replenishment tank. A socket is arranged at the bottom of the water replenishment tank. One end of the connecting rod is connected to the pry plate, and the other end is pluggable and arranged in the socket. The connecting piece connects the water tank door and the connecting rod, and the actuator is used to pry the pry plate to swing. It also includes a fixing sleeve, which is arranged on the upper end of the anti-oxidation tube and is fixedly connected to the mounting bracket.

2. The anti-oxidation device for heterojunction low-temperature solder strip according to claim 1, characterized in that: A partition is arranged in the water replenishment tank to form a water replenishment area and a water storage area, and a first overflow port connecting the water replenishment area and the water storage area is arranged on the partition; the annealing water tank is swingably arranged on the water tank body, and a limit block is arranged under the water replenishment tank, and the limit block is used to limit the swing amplitude of the water replenishment tank.

3. The anti-oxidation device for heterojunction low-temperature solder strip according to claim 2, characterized in that: The swing angle range of the water replenishment tank is between -15° and 15°.

4. The anti-oxidation device for heterojunction low-temperature solder strip according to claim 2, characterized in that: A contact switch is arranged on the limit block, and the opening and closing of the contact switch is controlled by the water replenishment tank.

5. The anti-oxidation device for heterojunction low-temperature solder strip according to claim 2, characterized in that: The distance between the swing center of the water replenishment tank and the end of the water replenishment area is smaller than the distance between the swing center of the water replenishment tank and the end of the water storage area.

6. The anti-oxidation device for heterojunction low-temperature solder strip according to claim 2, characterized in that: A second overflow port is arranged on the side wall of the water storage area.

7. The anti-oxidation device for heterojunction low-temperature solder strip according to claim 2, characterized in that: The connecting rod is rotatably connected to the pry plate.

8. The anti-oxidation device for heterojunction low-temperature solder strip according to claim 1, characterized in that: It also includes a liquid level indicating tube, which is connected with the water tank body to form a U-shaped tube, and the liquid level sensor is installed on the liquid level indicating tube.

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