CN217507366U - Improved photovoltaic cell sintering furnace - Google Patents
Improved photovoltaic cell sintering furnace Download PDFInfo
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- CN217507366U CN217507366U CN202220918464.0U CN202220918464U CN217507366U CN 217507366 U CN217507366 U CN 217507366U CN 202220918464 U CN202220918464 U CN 202220918464U CN 217507366 U CN217507366 U CN 217507366U
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Abstract
The utility model discloses an improve photovoltaic cell fritting furnace, its technical scheme main points are: the heating device comprises a sintering furnace body, wherein a plurality of groups of idler wheels are movably arranged in the sintering furnace body, a chain furnace belt is connected to the idler wheels in a fitting transmission manner, a heat insulation clamping plate is fixedly arranged in the sintering furnace body, a plurality of groups of heat insulation supports are fixedly arranged at the lower part of the heat insulation clamping plate, heating lamp tubes are fixedly arranged at the bottoms of the heat insulation supports, the heating lamp tubes are fixedly arranged above the chain furnace belt, an inlet and outlet piece sensor is arranged in the sintering furnace body, a microcontroller is electrically connected to the inlet and outlet piece sensor, and each heating lamp tube comprises a longitudinal group of heating lamp tubes and a transverse group of heating lamp tubes; the device can reduce the temperature difference in the photovoltaic cell panel, reduce poor EL sintering at the edge of the photovoltaic cell panel, improve the sintering effect and reduce the poor sintering proportion of the photovoltaic cell panel in the cavity running state.
Description
Technical Field
The utility model relates to a solar cell production field, in particular to improve photovoltaic cell fritting furnace.
Background
As photovoltaic cell technology advances and develops, the trend of reducing cell surface recombination and forming better metallization contacts, which is especially important, is to increase efficiency. The slurry printed on the surface of the battery corrodes the silicon nitride film on the surface of the battery through melting the glass powder in the slurry at high temperature and forms ohmic contact with the doped silicon substrate, and in the process, a uniform and stable high-temperature environment plays an extremely important role.
In the actual production process of the battery, the larger the size of the battery is, the slow heat dissipation of the center of the battery and the like, so that the actual drawing temperature difference between the middle area and the periphery of the photovoltaic cell panel sheet is about 5-10 ℃. Therefore, poor sintering of the cell edge often occurs, and metal contact of a part of the cell is also affected, so that the series resistance is slightly larger.
In addition, the conventional sintering furnace usually adopts a PID closed-loop control mode to control the output power of the lamp tube. However, when the sintering furnace is in a cavity state, the amount of heat dissipated in the furnace cavity is small, and the thermocouple feedback signal reduces the output power of the lamp tube, which results in that the actual amount of heat absorbed when the photovoltaic cell panel enters the sintering furnace in the cavity state is less than the amount of heat in the full cavity state, which causes poor sintering of the first few photovoltaic cell panels entering the cavity state to occur in different degrees.
SUMMERY OF THE UTILITY MODEL
To the problem mentioned in the background art, the utility model aims at providing an improve photovoltaic cell fritting furnace to solve the problem mentioned in the background art.
The above technical purpose of the present invention can be achieved by the following technical solutions:
the utility model provides an improve photovoltaic cell fritting furnace, includes the fritting furnace body, the inside movable mounting of fritting furnace body has a plurality of groups of gyro wheel, the laminating transmission is connected with chain furnace area on the gyro wheel, the inside fixed mounting of fritting furnace body has thermal-insulated splint, the lower part fixed mounting of thermal-insulated splint has a plurality of groups of adiabatic support, a plurality of groups the bottom fixed mounting of adiabatic support has the heating fluorescent tube, the heating fluorescent tube is fixed to be set up the top in chain furnace area, the inside of fritting furnace body is equipped with out-in piece inductor, the electric connection has microcontroller on the out-in piece inductor, the heating fluorescent tube is including vertical group heating fluorescent tube and horizontal group heating fluorescent tube.
Through adopting above-mentioned technical scheme, the design of the improvement photovoltaic cell fritting furnace that this improvement design provided can be through the heating fluorescent tube intensification setting to marginal area, reduce the problem that photovoltaic cell flange edge temperature is on the low side, reduce the bad output of photovoltaic cell board edge sintering, and through setting up the output that piece inductor feedback signal adjustment heating fluorescent tube advances out, improve PID closed-loop control mode, reach the purpose that the cavity promoted output, reduce the bad output of the first piece sintering of photovoltaic cell board.
Preferably, a plurality of temperature zones are arranged inside the sintering furnace body, the heating lamp tubes are fixedly arranged above the temperature zones, at least five heating lamp tubes are longitudinally arranged, and at least three heating lamp tubes are transversely arranged.
By adopting the technical scheme, the heating lamp tubes are arranged into the longitudinal group heating lamp tubes and the transverse group heating lamp tubes, so that the temperature region can be fully heated, all corners in the temperature can be heated, the transverse group heating lamp tubes are arranged on the same line, each lamp tube is independently controlled, and each lamp tube can be provided with the temperature and the temperature deviation range; the longitudinal group of heating lamp tubes is provided with five lamp tubes, and the temperature deviation range are uniformly set by the five lamp tubes.
Preferably, an inlet and an outlet are formed in the sintering furnace body, two sets of the sheet inlet and outlet sensors are arranged, the two sets of the sheet inlet and outlet sensors are fixedly mounted at the bottom ends of the inlet and the outlet respectively, the sheet inlet and outlet sensors are fixedly mounted at the upper part of the chain furnace belt respectively, and the microcontroller is fixedly mounted on the wall of the casing of the sintering furnace.
Through adopting above-mentioned technical scheme, entry port and delivery outlet can realize carrying out input and output to photovoltaic cell board, and the business turn over piece inductor can realize detecting the photovoltaic cell board of input and output, and microcontroller sets up externally, prevents that the high temperature from causing the damage to microcontroller.
Preferably, the device further comprises a main controller, wherein the main controller is electrically connected with a comparator, the main controller is electrically connected with a heating lamp tube output power detector, and the heating lamp tube output power detector is electrically connected with a temperature detector.
By adopting the technical scheme, the comparator can set the threshold value of the temperature, and realize the comparison with the detected numerical value, and the heating lamp tube output power detector can realize the detection of the output power of the heating lamp tube, and the temperature detector can realize the detection of the temperature zone.
Preferably, the temperature detector is electrically connected to a switch, the switch is electrically connected to a feedback circuit, and the feedback circuit is electrically connected to the comparator.
By adopting the technical scheme, the switch can realize the control and regulation of the system, and the feedback circuit can realize the comparison and judgment of the detected temperature transmitted to the comparator.
Preferably, the microcontroller is electrically connected to the switch and the detector for detecting the output power of the heating lamp tube, and the microcontroller receives the signal output by the in-out sheet sensor.
By adopting the technical scheme, the microcontroller can realize the monitoring and transmission of the input and output conditions of the photovoltaic cell panel, the sheet inlet and outlet sensor can not feed back signals when continuous photovoltaic cell panels pass through, no photovoltaic cell panel enters the sintering furnace when three printing machine tables stop or set time is up, and the sheet inlet and outlet sensor can send signals; no photovoltaic cell panel is discharged from the sintering furnace within a set time, and the in-out sheet sensor can send a signal.
Preferably, the temperature detector is a thermocouple sensor, at least five groups of temperature detectors are fixedly installed in the plurality of groups of temperature zones respectively, and the five groups of temperature detectors are fixedly installed at four corners and the center of the temperature respectively.
Through adopting above-mentioned technical scheme, the setting of thermocouple inductor can realize carrying out temperature detection to each angle in the warm area, realizes the accurate control of temperature.
To sum up, the utility model discloses mainly have following beneficial effect:
this improve design of photovoltaic cell fritting furnace that design provided can be through the heating fluorescent tube intensification setting to marginal zone, reduce the problem that photovoltaic cell flange edge temperature is low on the low side, reduce the bad output of photovoltaic cell board edge sintering, and through setting up the output that advances piece inductor feedback signal adjustment heating fluorescent tube, improve PID closed loop control mode, reach the purpose that the cavity promoted output, reduce the bad output of the first piece sintering of photovoltaic cell board.
Drawings
FIG. 1 is a top plan view of a transverse group of heating lamps in the improved design;
FIG. 2 is a front view of a heating device in the present modified design;
FIG. 3 is a schematic layout of a single-temperature zone heating lamp in the improved design;
FIG. 4 is a schematic structural diagram of an inductor device in the present improved design;
fig. 5 is a functional block diagram of a control method in the improved design.
Reference numerals: 1001. a roller; 1002. a chain belt; 1003. a thermally insulating support; 1004. a heat insulation splint; 2003. heating the lamp tube; 2004. a sheet in and out sensor; 2005. a microcontroller; 3001. longitudinally assembling heating lamp tubes; 3002. the transverse groups heat the lamp tubes.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
Examples
Referring to fig. 1 to 5, an improved photovoltaic cell sintering furnace comprises a sintering furnace body, wherein a plurality of groups of rollers 1001 are movably mounted inside the sintering furnace body, a chain furnace belt 1002 is attached to the rollers 1001 in a transmission manner, a heat insulation clamping plate 1004 is fixedly mounted inside the sintering furnace body 1, a plurality of groups of heat insulation supports 1003 are fixedly mounted on the lower portion of the heat insulation clamping plate 1004, heating lamp tubes 2003 are fixedly mounted at the bottoms of the groups of heat insulation supports 1003, the heating lamp tubes 2003 are fixedly arranged above the chain furnace belt 1002, a sheet inlet and outlet sensor 2004 is arranged inside the sintering furnace body 1, a microcontroller 2005 is electrically connected to the sheet inlet and outlet sensor 2004, and the heating lamp tubes 2003 comprise a longitudinal group of heating lamp tubes 3001 and a transverse group of heating lamp tubes 3002.
Through adopting above-mentioned technical scheme, the design of the improvement photovoltaic cell fritting furnace that this improvement design provided can be through the heating fluorescent tube 2003 intensification setting to the marginal zone, reduce the problem that photovoltaic cell plate edge temperature is on the low side, reduce the bad output of photovoltaic cell panel edge sintering, and through setting up the output of going into piece inductor 2004 feedback signal adjustment heating fluorescent tube 2003, improve PID closed-loop control mode, reach the purpose that the cavity promotes output, reduce the bad output of the first piece sintering of photovoltaic cell panel.
In this embodiment, preferably, a plurality of temperature zones are arranged inside the sintering furnace body, the heating lamp tubes 2003 are fixedly mounted above the temperature zones, at least five heating lamp tubes 3001 are arranged in the longitudinal direction, and at least three heating lamp tubes 3002 are arranged in the transverse direction. The effect is that the heating lamp 2003 is arranged into a longitudinal group of heating lamps 3001 and a transverse group of heating lamps 3002 to realize sufficient heating of the temperature region, all corners in the temperature can be heated, the transverse group of heating lamps 3002 have the same line, each lamp is independently controlled, and each lamp can be provided with the temperature and the temperature deviation range; the longitudinal group of heating lamps 3001 has five lamps, which are uniformly set with temperature and temperature deviation ranges.
In this embodiment, preferably, the sintering furnace body is provided with an inlet and an outlet, two sets of sheet-in and sheet-out sensors 2004 are provided, the two sets of sheet-in and sheet-out sensors 2004 are respectively and fixedly installed at the bottom ends of the inlet and the outlet, the sheet-in and sheet-out sensors 2004 are respectively and fixedly installed at the upper part of the chain furnace belt 1002, and the microcontroller 2005 is fixedly installed on the wall of the casing of the sintering furnace. The effect is that, inlet port and delivery outlet can realize carrying out input and output to photovoltaic cell board, and business turn over piece inductor 2004 can realize detecting the photovoltaic cell board of input and output, and microcontroller 2005 sets up externally, prevents that high temperature from causing the damage to microcontroller 2005.
In this embodiment, preferably, the lighting device further includes a main controller, the main controller is electrically connected to the comparator, the main controller is electrically connected to the heating lamp tube output power detector, and the heating lamp tube output power detector is electrically connected to the temperature detector. The effect is that the comparator can set the threshold value of the temperature and realize the comparison with the detected value, and the heating lamp output power detector can realize the detection of the output power of the heating lamp 2003, and the temperature detector can realize the detection of the temperature zone.
In this embodiment, preferably, the temperature detector is electrically connected to a switch, the switch is electrically connected to a feedback circuit, and the feedback circuit is electrically connected to the comparator. The effect is that, the switch can realize carrying out control regulation to the system, and feedback circuit can realize carrying out the comparison judgement for the comparator to the temperature that detects.
In this embodiment, preferably, the microcontroller 2005 is electrically connected to the switch and the heating lamp output power detector, respectively, and the microcontroller 2005 receives signals output by the in-out sheet sensor 2004. The effect is that the microcontroller 2005 can monitor and transmit the input and output conditions of the photovoltaic cell panel, the in-out sheet sensor 2004 does not feed back signals when continuous photovoltaic cell panels pass through, no photovoltaic cell panel enters the sintering furnace when three printing machine stations stop or within a set time, and the in-out sheet sensor 2004 sends out signals; no photovoltaic panel exits the sintering furnace within a set time, and the in-out sheet sensor 2004 will send a signal.
In this embodiment, preferably, the temperature detector is a thermocouple sensor, and at least five groups of temperature detectors are fixedly installed in the plurality of temperature zones respectively, and the five groups of temperature detectors are fixedly installed at four corners and the center of the temperature respectively. The effect does, and the setting of thermocouple inductor can realize carrying out temperature detection to each angle in the warm area, realizes the accurate control of temperature.
The use principle and the advantages are as follows:
the biggest design difference with the traditional sintering furnace is that the photovoltaic cell panels in different areas are heated and heated by the aid of the multi-distribution heating lamp tubes 2003, the temperature is raised by changing the arrangement of the longitudinal groups of the heating lamp tubes 3001 in the edge areas, the temperature in the edge areas is raised, more energy is radiated, when the photovoltaic cell panels enter the temperature area under the transmission of the chain furnace zone 1002, the temperature distribution in the furnace chamber of the temperature area is high at the moment, the middle temperature is lower, the heat in the edge areas is absorbed all the time, the heat loss absorbed by the areas with high edge temperatures is larger than that in the middle because the heat dissipation of the periphery of the photovoltaic cell panels is fast and the heat dissipation of the middle is slow, and the actual temperature difference between the edge areas and the middle areas of the battery is not large under the condition that the heat absorbed by the edges of the battery is larger than that the heat absorbed by the middle areas.
The actual furnace chamber environment is complicated, CDA air blowing, organic air exhaust and hot air exhaust pipelines are arranged above and below the photovoltaic cell panel, the air flow direction can be changed, the movement of the air flow can be accompanied with some heat loss, the direct contact between the two sides of the edge of the photovoltaic cell panel and the chain-type furnace belt 1002 is also considered, the chain-type furnace belt 1002 can absorb a part of heat in the running state, a part of the heat is absorbed from the large environment of the furnace chamber, and a part of the heat can be absorbed from the contacted photovoltaic cell panel area, therefore, the above can be realized only under ideal controllable environmental factors, and the actual temperature adjustment is adjusted according to the field condition.
In the present modified design, at another design point, the operation state of the sintering furnace body is sensed in real time by providing the inlet and outlet piece sensors 2004 at the inlet and outlet piece positions of the sintering furnace body. In specific example application, the positive electrode printing machine is stopped emergently to process abnormity, unprinted photovoltaic cell plates are remained before positive electrode printing, the printed photovoltaic cell plates enter the sintering furnace under the traction of the chain furnace belt 1002, after the in-out sheet sensor 2004 senses that the last photovoltaic cell plate enters the sintering furnace body, the in-out sheet sensor 2004 sends a sensing signal to the microcontroller 2005, and when the in-out sheet sensor 2004 senses that the last photovoltaic cell plate enters the sintering furnace body, the in-out sheet sensor 2004 sends a sensing signal to the microcontroller 2005; at this time, after receiving the two sensing signals and not receiving the sensor signal after a set period of time, the microcontroller 2005 sends a signal switch to cut off a feedback signal of the thermocouple in the temperature region, automatically controls and increases the output power of the heating pipe to realize the heating function, and performs open-loop control; when the in-out sensor 2004 senses the photovoltaic cell panel, the microcontroller 2005 turns on the signal switch, and the thermocouple sensing signal is fed back to the comparator for closed-loop control.
In the actual production process, the sintering cavity state is in a long-time state, the open loop control heating is adopted, the out-of-control risk is caused, the lamp tube can be damaged, the upper limit and the lower limit of the safe temperature are set, and when the temperature reaches the upper limit of the temperature setting range, the automatic reset operation of the sintering furnace alarm is reset.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (8)
1. The utility model provides an improve photovoltaic cell fritting furnace, includes the fritting furnace body, its characterized in that: the internal movable mounting of fritting furnace body has a plurality of groups of gyro wheel (1001), laminating transmission is connected with chain furnace area (1002) on gyro wheel (1001), the internal fixed mounting of fritting furnace body (1) has thermal-insulated splint (1004), the lower part fixed mounting of thermal-insulated splint (1004) has a plurality of groups adiabatic support (1003), the bottom fixed mounting of a plurality of groups adiabatic support (1003) has heating fluorescent tube (2003), heating fluorescent tube (2003) is fixed to be set up the top of chain furnace area (1002), the inside of fritting furnace body (1) is equipped with business turn over piece inductor (2004), it has microcontroller (2005) to go into electric connection in business turn over piece inductor (2004), heating fluorescent tube (2003) is including vertical group heating fluorescent tube (3001) and horizontal group heating fluorescent tube (3002).
2. An improved photovoltaic cell firing furnace as claimed in claim 1 wherein: the sintering furnace is characterized in that a plurality of temperature zones are arranged inside the sintering furnace body, the heating lamp tubes (2003) are fixedly mounted above the temperature zones, at least five heating lamp tubes (3001) are longitudinally arranged, and at least three heating lamp tubes (3002) are transversely arranged.
3. An improved photovoltaic cell firing furnace as claimed in claim 1 wherein: an inlet and an outlet are formed in the sintering furnace body, two groups of sheet inlet and outlet inductors (2004) are arranged, and the two groups of sheet inlet and outlet inductors (2004) are fixedly mounted at the bottom ends of the inlet and the outlet respectively.
4. An improved photovoltaic cell sintering furnace as claimed in claim 3 wherein: the sheet in-out sensors (2004) are fixedly arranged at the upper parts of the chain furnace belts (1002), and the microcontroller (2005) is fixedly arranged on the shell wall of the sintering furnace.
5. The improved photovoltaic cell sintering furnace of claim 2, wherein: the device is characterized by further comprising a main controller, wherein the main controller is electrically connected with a comparator, the main controller is electrically connected with a heating lamp tube output power detector, and the heating lamp tube output power detector is electrically connected with a temperature detector.
6. An improved photovoltaic cell sintering furnace as claimed in claim 5 wherein: the temperature detector is electrically connected with a switch, the switch is electrically connected with a feedback circuit, and the feedback circuit is electrically connected with the comparator.
7. An improved photovoltaic cell sintering furnace as claimed in claim 6 wherein: the microcontroller (2005) is electrically connected to the switch and the heating lamp output power detector, respectively, and the microcontroller (2005) receives a signal output by the in-out sheet sensor (2004).
8. The improved photovoltaic cell sintering furnace of claim 5, wherein: the temperature detector adopts a thermocouple sensor, five groups of temperature detectors are fixedly installed in the temperature areas respectively, and the five groups of temperature detectors are fixedly installed at the four corners and the center of the temperature respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220918464.0U CN217507366U (en) | 2022-04-20 | 2022-04-20 | Improved photovoltaic cell sintering furnace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220918464.0U CN217507366U (en) | 2022-04-20 | 2022-04-20 | Improved photovoltaic cell sintering furnace |
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| Publication Number | Publication Date |
|---|---|
| CN217507366U true CN217507366U (en) | 2022-09-27 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220918464.0U Active CN217507366U (en) | 2022-04-20 | 2022-04-20 | Improved photovoltaic cell sintering furnace |
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| Country | Link |
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| CN (1) | CN217507366U (en) |
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2022
- 2022-04-20 CN CN202220918464.0U patent/CN217507366U/en active Active
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