TWI819933B - Thermal decomposition device and thermal decomposition method applied thereto - Google Patents

Abstract

A thermal decomposition device configured to decompose a solar cell module includes a heating zone, a thermal insulation zone, a first conveying mechanism, and a second conveying mechanism. The heating zone has a first chamber, a first inlet and a first outlet that are in space communication with one another. The thermal insulation zone has a second chamber, a second inlet and a second outlet that are in space communication with one another. The second inlet is in space communication with the first outlet. The first conveying mechanism is at least disposed in the first chamber and configured to move the solar cell module to the first outlet from the first inlet. The second conveying mechanism is at least disposed in the second chamber and configured to move the solar cell module to the second outlet from the second inlet. A direction from the first inlet to the first outlet is not parallel to a direction from the second inlet to the second outlet.

Description

Thermal decomposition device and the thermal decomposition method used therein

The present invention relates to a thermal decomposition device and a thermal decomposition method used therein, in particular to a thermal decomposition device that uses high temperature to decompose solar cell modules and a thermal decomposition method used therein.

With the rise of sustainable energy, a large number of solar cell modules are manufactured for use in the solar industry. After these solar cell modules reach the end of their service life, some parts of the solar cell modules can be recycled to implement the concept of sustainable development. The parts of solar cell modules generally include aluminum frames, glass plates, cells, package backsheets, etc. Among them, complete glass plates are more valuable for recycling. Since the glass plate is fragile, the glass plate is coated with sealant to fix the battery cells, and the battery cells are connected to each other through conductive welding tape, making it difficult for the glass plate to be completely separated by simple disassembly. And out. In this regard, high temperature is generally applied to the solar cell module. The high temperature is used to decompose the encapsulant and break the welding between the conductive ribbon and the cell to separate the complete glass plate.

The separated glass plates need to be cooled. According to the principle of thermal expansion and contraction, the glass plate will generate compressive stress on the surface due to encountering cold air. The greater the temperature difference between the glass plate and the cold air, the greater the compressive stress will be generated. If the cooling temperature is uneven and there is an excessive temperature difference on the surface of the glass plate, the glass plate will crack due to uneven compressive stress. Cracked glass panels have a lower recycling value than intact glass panels.

In order to maintain the integrity of the glass plate, multiple solar cell modules are generally placed into a single heating furnace, and the separated glass plates are gradually cooled down before being taken out of the heating furnace. However, this method requires waiting for a batch of solar cell modules to complete the separation of glass plates before proceeding with the separation of the next batch, making the thermal decomposition process very time-consuming. What's more, when taking out the glass plates, the heating furnace The temperature will drop rapidly due to the inflow of cold air, and it will need to be reheated in the next batch of separation work, making the thermal decomposition process consume a lot of energy. Alternatively, solar cell modules are generally passed through the heating furnace and cooling furnace one by one on a conveyor belt. However, in order to avoid excessive temperature differences between the front and rear ends of the glass plate in the conveying direction, the cooling furnace should not cool down too fast in the conveying direction, which results in the need to extend the cooling furnace very long and make the entire decomposition device occupy a large volume.

The present invention provides a thermal decomposition device and a thermal decomposition method used therein, which can achieve a shorter decomposition time than conventional methods and a smaller device size than conventional methods while avoiding excessive energy consumption. The solar cell modules are separated into complete glass panels.

A thermal decomposition device disclosed in one embodiment of the present invention is used to decompose a solar cell module. The thermal decomposition device includes a heating zone, a heat preservation zone, a first conveying mechanism and a second conveying mechanism. The heating zone has a connected first space, a first inlet and a first outlet. The first entrance and the first exit are located on opposite sides of the first space. The heat preservation area has a second connected space, a second entrance and a second outlet. The second inlet is connected to the first outlet of the heating zone. The first transport mechanism is at least partially disposed in the first space, and the first transport mechanism is used to move the solar cell module from the first entrance to the first outlet. The second transport mechanism is at least partially disposed in the second space, and the second transport mechanism is used to move the solar cell module from the second entrance to the second outlet. The direction from the first inlet to the first outlet is not parallel to the direction from the second inlet to the second outlet.

Another embodiment of the present invention discloses a thermal decomposition device for decomposing a solar cell module. The thermal decomposition method includes: moving the solar cell module into the heating zone from a first entrance of the heating zone to heat the solar cell module; moving the solar cell module to a first outlet of the heating zone to heat the solar cell module. Move out of the heating zone; move the solar cell module into the heat preservation zone from a second entrance of the heat preservation zone to keep the solar cell module warm, wherein the second entrance of the heat preservation zone is connected to the first outlet of the heating zone, and the heat preservation zone is in the second The temperature at the entrance is substantially equal to the temperature at the first outlet of the heating zone; and the solar cell module is moved to a second outlet of the heat preservation zone, wherein the temperature of the heat preservation zone at the second outlet is lower than the temperature of the heat preservation zone at the second outlet. The temperature at the inlet; wherein the direction from the first inlet to the first outlet is not parallel to the direction from the second inlet to the second outlet.

According to the thermal decomposition device disclosed in the above embodiment, since the solar cell module is insulated from the side by the heat preservation zone during the movement from the second inlet to the second outlet, the entire surface temperature distribution of the solar cell module can be evenly distributed. There will be no excessive temperature difference, thereby ensuring that the solar cell module will not break due to uneven cooling temperature. On the premise that the solar cell module is cooled evenly, the second inlet to the second outlet can be designed to have a larger cooling range while still maintaining the integrity of the solar cell module. Compared with the horizontal cooling of the conventional technology, the vertical rapid cooling design of this case can significantly save the space occupied by the thermal decomposition device and the required working time. Moreover, due to the shortened working time, it can also further reduce energy consumption. .

The above description of the content of the present invention and the following description of the embodiments are used to demonstrate and explain the principles of the present invention, and to provide further explanation of the patent application scope of the present invention.

The detailed features and advantages of the present invention are described in detail below in the implementation mode. The content is sufficient to enable anyone skilled in the relevant art to understand the technical content of the present invention and implement it according to the content disclosed in this specification, the patent scope and the drawings. , anyone familiar with the relevant art can easily understand the relevant objectives and advantages of the present invention. The following examples further illustrate the aspects of the present invention in detail, but do not limit the scope of the present invention in any way.

Please refer to FIGS. 1 and 2 . FIG. 1 is a schematic perspective view of a thermal decomposition device 1 for decomposing a solar cell module SC according to an embodiment of the present invention, and FIG. 2 is a schematic view of the thermal decomposition device of FIG. 1 1 and the side view of the solar cell module SC. Please note that part of the side wall of the thermal decomposition device 1 has been omitted in FIGS. 1 and 2 in order to clearly illustrate the internal structure of the thermal decomposition device 1 .

According to the thermal decomposition device 1 of one embodiment of the present invention, high temperature can be used to decompose the solar cell module SC to completely separate the glass plate GP in the solar cell module SC.

The thermal decomposition device 1 includes a heating zone 11 , a heat preservation zone 12 , a first conveying mechanism 13 , a second conveying mechanism 14 , a block 15 , a third conveying mechanism 16 and a removal device 17 .

The heating area 11 has a first space 111 , a first inlet 112 and a first outlet 113 that are connected. The first inlet 112 and the first outlet 113 are located on opposite sides of the first space 111 in the horizontal direction X. The heating zone 11 contains a plurality of first temperature adjustment devices TA1. The first temperature adjustment device TA1 is, for example, an infrared heater or a resistance heater, and is disposed on the lower wall 110 a below the first space 111 to heat the first space 111 in the vertical direction (gravitational direction) Z. In some embodiments, the first temperature adjustment device can also be disposed on the upper wall above the first space, or can also be disposed on the upper and lower walls on both upper and lower sides of the first space at the same time. The temperature at which the first temperature adjustment device TA1 heats the first space 111 can be a constant temperature maintained at any temperature in the range of 400 to 700 degrees Celsius, for example, a constant temperature of 500 degrees Celsius. The opening height H of the heating zone 11 at the first inlet 112 can be any size within the range of 3 to 10 centimeters, for example, 5 centimeters, to prevent the heat in the first space 111 from dissipating from the first inlet 112 to the outside. .

The heat preservation area 12 has a second space 121 , a second inlet 122 and a second outlet 123 that are connected. The second space 121 has a connected high-temperature area 1211 and a low-temperature area 1212, and the high-temperature area 1211 is located above the low-temperature area 1212 in the direction of gravity Z. The temperature of the high temperature zone 1211 is higher than the temperature of the low temperature zone 1212; specifically, the heat preservation zone 12 includes a plurality of first temperature adjustment devices TA1. The first temperature adjustment devices TA1 are, for example, disposed on the side wall surfaces 120a on the left and right sides of the second space 121. , 120b, and the heating temperature of these first temperature adjustment devices TA1 gradually decreases from the upper high temperature zone 1211 to the lower low temperature zone 1212 in the gravity direction Z, so as to provide a gradient type for the second space 121 in the gravity direction Z. Cool down. Moreover, the second inlet 122 is connected to the high temperature zone 1211, and the second outlet 123 is connected to the low temperature zone 1212; therefore, it can also be said that the temperature of the heat preservation zone 12 at the second inlet 122 is higher than the temperature of the heat preservation zone 12 at the second outlet 123 . Furthermore, the second inlet 122 is connected to the first outlet 113 of the heating zone 11 , and the temperature of the heat preservation zone 12 at the second inlet 122 is substantially equal to the temperature of the heating zone 11 at the first outlet 113 . In the present invention, the temperature at the second inlet 122 is substantially equal to the temperature at the first outlet 113 means that the temperature difference between the second inlet 122 and the first outlet 113 is, for example, below 15 degrees Celsius, in order to prevent the solar cells from being loaded. The glass plate GP of module SC cracked due to excessive temperature difference. In addition, the temperature of the high-temperature zone 1211 of the second space 121 is substantially the same as the temperature of the first space 111; the temperature of the low-temperature zone 1212 of the second space 121 is, for example, any temperature in the range of 100 to 300 degrees Celsius, preferably , can be any temperature in the range of 150 to 250 degrees Celsius, for example, 200 degrees Celsius.

The first conveying mechanism 13 is at least partially disposed in the first space 111 . Specifically, the first conveyor mechanism 13 is a conveyor line 131. The conveyor line 131 extends substantially horizontally from outside the first space 111 through the first inlet 112 to the first outlet 113, and the bearing surface of the conveyor line 131 ( (not otherwise labeled) is substantially perpendicular to its extending direction (horizontal direction X). The conveyor line 131 is, for example, a powered roller conveyor or a belt conveyor. The conveyor line 131 may, for example, include a power source such as a motor to provide power for the rollers of the roller conveyor to roll or to provide power for the conveyor belt of the belt conveyor to move; or, when the conveyor line 131 is, for example, a roller conveyor, it may also The roller conveyor is arranged at a slight incline, so that the weight of the objects carried by the roller conveyor is used to drive the rollers to rotate and serve as the conveying power of the roller conveyor.

The second conveying mechanism 14 can be disposed in the second space 121 . Specifically, the second conveying mechanism 14 includes a track 141 and a plurality of temperature equalizing plates 142 . The track 141 is disposed in the second space 121 , and the path of the track 141 passes near the second entrance 122 and the second outlet 123 . The temperature equalizing plate 142 is movably arranged on the track 141 . The bearing area of the vapor chamber 142 may be, for example, larger than the area of the solar cell module SC to be supported. The vapor chamber 142 may be, for example, a graphene plate or a silicon carbide plate with good thermal conductivity, or a hollow metal plate with a gas flow channel (not shown) inside. Due to the high thermal conductivity of the vapor chamber 142, a consistent temperature is maintained on the entire surface of the vapor chamber 142, so that the temperature of the solar cell module SC to be carried is evenly distributed on the supported surface. In some embodiments, the number of vapor chambers may be only one, but the present invention is not limited thereto.

The stopper 15 may be disposed in the low temperature zone 1212 of the second space 121 and adjacent to the moving path of the vapor chamber 142 near the second outlet 123 .

The third conveying mechanism 16 can also be a conveying line, such as an unpowered roller conveyor, and there are gaps between the rollers (not shown). The third conveying mechanism 16 passes through the second outlet 123 of the heat preservation zone 12 horizontally, for example. One end of the third conveying mechanism 16 is located within the second space 121 , and the other end of the third conveying mechanism 16 is located outside the second space 121 .

The removal device 17 is, for example, an air gun that can spray high-pressure air, and the removal device 17 is, for example, disposed above the third conveying mechanism 16 to blow gas onto the third conveying mechanism 16 .

According to an embodiment of the present invention, the solar cell module SC includes solar components such as a glass plate GP and a cell sheet CL. The cell sheet CL and the glass plate GP are bonded through an encapsulant (not shown), and the cell sheet CL A conductive solder tape (not shown) is welded on, and the encapsulant is made of, for example, ethylene vinyl acetate (EVA). The solar cell module SC can be put into the thermal decomposition device 1 to separate the complete glass plate GP. Among them, the glass plate GP may have different thicknesses due to different types of solar cell modules SC. Generally speaking, keeping the temperature difference between any two points on the surface of the glass plate GP below 15 degrees Celsius can prevent the glass plates GP of various thicknesses used in various solar cell modules SC from cracking during the cooling process, thereby causing The separated glass plate GP remains intact. Please note that the solar cell module SC here does not include the aluminum frame, junction box and package backplane.

The process of placing the solar cell module SC into the thermal decomposition device 1 and separating the glass plate GP will be described below.

First, the solar cell module SC is placed on the conveyor line 131 with the glass plate GP facing down. The conveyor line 131 can carry the solar cell module SC and move the solar cell module SC from the first entrance 112 into the first inlet 112 along the horizontal direction X. space 111 and transported to the first outlet 113. During the movement of the solar cell module SC in the first space 111 , the upper and lower surfaces of the solar cell module SC are heated and gradually rise to a temperature that is substantially the same as the temperature of the first space 111 . The encapsulating glue on the solar cell module SC will decompose into gas due to the high temperature, and the encapsulating glue will be completely decomposed before being transported to the first outlet 113, which takes about 30 to 120 minutes. In addition, the conductive solder strip on the solar cell module SC will be disconnected from the cell sheet CL due to the high temperature. At this time, the cell piece CL and the conductive welding strip are no longer fixedly supported on the glass plate GP.

The solar cell module SC is then moved to the temperature equalizing plate 142 of the second space 121 through the first outlet 113 and the second inlet 122 . The solar cell module SC carried on the vapor chamber 142 moves along the track 141 from the high temperature zone 1211 of the second space 121 to the low temperature zone 1212 along the gravity direction Z. When the solar cell module SC moves from the high-temperature zone 1211 to the low-temperature zone 1212, it is heated on the side and gradually cools down to the same temperature as the temperature of the low-temperature zone 1212.

Since the solar cell module SC is insulated from the side by the heat preservation zone during the process of moving from the high temperature zone 1211 to the low temperature zone 1212, and receives the heat provided by the first temperature adjustment device TA1 from the side (horizontal direction X), and the first temperature The heat provided by the adjusting device TA1 gradually decreases along the vertical direction Z from the high temperature zone 1211 to the low temperature zone 1212, so that the entire surface temperature of the glass plate GP of the solar cell module SC can be distributed evenly, and any two points on the entire surface of the glass plate GP can be made uniform. The temperature difference will not exceed 15 degrees Celsius, thus ensuring that the glass plate GP will not crack due to uneven cooling temperature. On the premise that the glass plate GP is uniformly cooled, the gradient cooling from the high temperature zone 1211 to the low temperature zone 1212 can be designed to have a larger cooling amplitude while still maintaining the integrity of the glass plate GP. The vertical rapid cooling design of this case can significantly save the space occupied by the thermal decomposition device 1 and the required working time, and due to the shortened working time, it can also further reduce energy consumption. In addition, the uniform temperature plate 142 can provide a uniformly distributed bearing surface for the glass plate GP of the solar cell module SC, and can further ensure the integrity of the glass plate GP after cooling.

When the temperature equalizing plate 142 located in the low temperature zone 1212 moves to the vicinity of the second outlet 123 , the solar cell module SC carried by the equalizing temperature plate 142 will be resisted by the stopper 15 and moved to the third conveying mechanism 16 . Then, the third transport mechanism 16 can move the solar cell module SC out of the second space 121 through the second outlet 123 . During the process of the third conveying mechanism 16 conveying the solar cell module SC, the removal device 17 can spray gas on the solar cell module SC carried by the third conveying mechanism 16 to remove the cells on the solar cell module SC. CL and conductive welding strips are blown away, in which the blown cell sheets CL and conductive welding strips can fall to the bottom through the gap existing between the rollers of the third conveying mechanism 16 for centralized removal.

After the solar cell module SC on the vapor chamber 142 is pushed up by the stopper 15 and leaves the vapor chamber 142, the vapor chamber 142 that does not carry the solar cell module SC returns from the low temperature zone 1212 to the high temperature zone through the track 141. 1211, and is heated again to substantially the same temperature as the temperature of the first space 111 in the process of returning to the high temperature zone 1211, so as to once again carry the next batch of solar cell modules SC transported from the first outlet 113.

In the above embodiment, the high temperature zone 1211 is designed to be located above the low temperature zone 1212 in the direction of gravity Z, so that the hot air in the high temperature zone 1211 floats upward due to the principle of thermal convection and is concentrated in the top area of the heat preservation zone 12 instead of As for the temperature affecting the low temperature zone 1212 below. However, the present invention is not limited thereto. In some embodiments, if the gradient cooling of the second space can be accurately controlled, the high-temperature zone can also be designed to be located below the low-temperature zone in the direction of gravity.

In some embodiments, the heating area may further have an exhaust hole to discharge gas generated by decomposition of the encapsulant.

In some embodiments, the heating area can also be changed to transport the solar cell modules vertically. As long as sufficient air extraction or exhaust equipment is provided in the first space, the encapsulant that has been decomposed into gas can be prevented from being damaged by thermal convection. The principle is to float upward and affect the solar cell module located above in the direction of gravity (vertical direction).

In some embodiments, the first temperature adjustment device in the heat preservation zone can also be disposed on the side of the vaporization plate away from the bearing surface, and gradually lowers the heating temperature when moving from the high temperature zone to the low temperature zone, thus providing the same Gradient cooling.

In some embodiments, the stopper may not be provided, and a clamp may be used to clamp the solar cell module after gradient cooling to the third conveying mechanism.

In some embodiments, the conveyor line of the third conveyor mechanism can also be a belt conveyor without hollow gaps, and the removal device blows the battery sheets and conductive soldering strips on the glass plate to both sides of the conveyor belt to fall off. to the bottom of the third conveyor mechanism.

In some embodiments, the removal device may also be a brush to sweep the battery pieces and conductive soldering strips off the glass plate to the bottom of the third conveying mechanism.

In some embodiments, the removal device can also be a clamp, which is used to clamp the glass plate and tilt the glass plate to cause the battery pieces and conductive ribbons on the glass plate to fall off.

In some embodiments, the removal device may not be provided, but the third conveying mechanism may be arranged at an angle, and gravity may be used to cause the battery pieces and conductive ribbons on the glass plate to fall naturally.

Please refer to FIG. 3 , which is a schematic side view of a thermal decomposition device 2 for decomposing a solar cell module SC according to another embodiment of the present invention. Please note that part of the side wall of the thermal decomposition device 2 has been omitted in FIG. 3 in order to clearly illustrate the internal structure of the thermal decomposition device 2 . The thermal decomposition device 2 of this embodiment is roughly similar in structure to the thermal decomposition device 1 of the above embodiment. Only the differences between the thermal decomposition device 2 and the thermal decomposition device 1 and related necessary components will be described below.

In the thermal decomposition device 2 according to another embodiment of the present invention, the stopper 25 can extend from the low temperature zone 2212 to the high temperature zone 2211, and the thermal decomposition device 2 can further include a plurality of second temperature adjustment devices TA2. The second temperature adjustment device TA2 is, for example, substantially the same heater as the first temperature adjustment device TA1. The second temperature adjustment device TA2 is located in the high-temperature zone 2211 and the low-temperature zone 2212 and is disposed on the stopper 25 , and is adjacent to the path where the temperature equalizing plate 242 moves from the high-temperature zone 2211 to the low-temperature zone 2212 . The temperature of the second temperature adjustment device TA2 gradually decreases from the high temperature area 2211 to the low temperature area 2212. Compared with the first temperature adjustment device TA1 arranged on the side wall surface 220a of the heat preservation zone 22 close to the heating zone 21, the second temperature adjustment device TA2 arranged on the stopper 25 is closer to the temperature equalizing plate 242 when carrying the solar cell module SC. The path traveled. Therefore, the second temperature adjustment device TA2 can further ensure the stability of the gradient cooling of the temperature equalizing plate 242 when carrying the solar cell module SC.

Please refer to FIG. 4 , which is a schematic side view of a thermal decomposition device 3 for decomposing a solar cell module SC according to another embodiment of the present invention. Please note that part of the side wall of the thermal decomposition device 3 has been omitted in Figure 4 in order to clearly illustrate the internal structure of the thermal decomposition device 3. The thermal decomposition device 3 of this embodiment is roughly similar in structure to the thermal decomposition device 1 of the above embodiment. Only the differences between the thermal decomposition device 3 and the thermal decomposition device 1 and related necessary components will be described below.

In the thermal decomposition device 3 according to another embodiment of the present invention, the first conveying mechanism 33 may instead include a transport channel 336 and a pushing device 337. The transport channel 336 is, for example, an unpowered planar plate, and the transport channel 336 extends from the first inlet 312 to the first outlet 313 . The pushing device 337 is, for example, a robotic arm, and the pushing device 337 is located outside the first space 311 . The pushing device 337 can push the solar cell modules SC to be thermally decomposed one by one into the transportation channel 336 in the first space 311 . Specifically, the pushing device 337 pushes the solar cell module SC placed at the first entrance 312 into the first space 311, so as to push the solar cell module SC already located in the first space 311 toward the first outlet 313. . In some embodiments, the transportation channel can also be a horizontally placed unpowered roller conveyor to reduce friction when pushing the solar cell module. In this embodiment, since the solar cell module SC will stay in the first space 311 for a short time before being pushed forward by the solar cell module SC behind it, the solar cell module SC in the first space 311 will not It is always in a moving state, so the first space 311 can be designed to be shorter, thereby saving the space occupied by the heating area 31 . Moreover, in this embodiment, another robot arm or a clamp (not shown) can be used to pull the solar cell module SC to the third conveying mechanism 36, and the solar cell module can be transported by the third conveying mechanism 36. Group SC moves out of the second space 321 via the second outlet 323 . In addition, the other robot arm or clamp can also pull the temperature equalizing plate 342 back to the high temperature zone 3211 to continue the work of carrying the next batch of solar cell modules SC. Thereby, the provision of the aforementioned tracks and stops can be omitted, so the second space 321 can be designed to be narrower, thus saving the space occupied by the heat preservation area 32 . However, the present invention is not limited thereto. In some embodiments, another robotic arm or clamp can also be used to pull the vapor chamber and the solar cell module it carries out of the second space, and then return the vapor chamber to the high temperature area to continue the next batch of processing. Carrying work; this can further save the installation space of the second conveying device.

In the thermal decomposition device 3 according to another embodiment of the present invention, the heating zone 31 may further have a door 314. The door 314 covers at least part of the first entrance 312 , and the door 314 is opened when the pushing device 337 pushes the solar cell module SC into the first space 311 to further prevent the heat in the first space 311 from passing through the first entrance 312 Dissipated to the outside. In some embodiments, the door body can also completely cover the first entrance to further prevent heat loss in the first space.

Please refer to FIGS. 5 and 6 . FIG. 5 is a schematic side view of the thermal decomposition device 4 for decomposing the solar cell module SC according to another embodiment of the present invention, and FIG. 6 is a thermal decomposition device 4 of FIG. 5 . A schematic side view of the decomposition device 4 after the solar cell module SC has been cooled down. Please note that part of the side wall of the thermal decomposition device 4 has been omitted in FIGS. 5 and 6 in order to clearly illustrate the internal structure of the thermal decomposition device 4 . The thermal decomposition device 4 of this embodiment is roughly similar in structure to the thermal decomposition device 1 of the above embodiment. Only the differences between the thermal decomposition device 4 and the thermal decomposition device 1 and related necessary components will be described below.

In the thermal decomposition device 4 according to yet another embodiment of the present invention, the first temperature adjustment device TA1 in the heating zone 41 can be instead disposed on the upper wall surface 410b above the first space 411, so as to adjust the temperature in the vertical direction ( The first space 411 is heated in the direction of gravity) Z. The first conveying mechanism 43 may instead include a conveying channel 436 and a pushing device 437 . The transport channel 436 is, for example, an unpowered lower side wall below the heating zone 41 , and the transport channel 436 extends from the first inlet 412 to the first outlet 413 . The pushing device 437 is located outside the first space 411 . The solar cell modules SC to be thermally decomposed can be placed on a uniform temperature plate VP and pushed one by one into the transportation channel 436 in the first space 411 by the pushing device 437 along the horizontal direction X, as indicated by the arrow AA in Figure 5 Show. Specifically, the pushing device 437 pushes the solar cell module SC placed at the first entrance 412 together with the temperature equalizing plate VP into the first space 411 along the horizontal direction X, so as to push the solar cells already located in the first space 411 The module SC and the vapor chamber VP are pushed to the first outlet 413. In this embodiment, since the solar cell module SC and the temperature equalizing plate VP will stay in the first space 411 for a short time before being pushed forward by the rear solar cell module SC and the equalizing temperature plate VP, the first space 411 The solar cell module SC inside will not always be in a moving state, so the first space 411 can be designed to be shorter, thereby saving the space occupied by the heating area 41.

In the thermal decomposition device 4 according to yet another embodiment of the present invention, the second conveying mechanism 44 can be changed to a mobile storage cabinet 446. Specifically, the mobile storage cabinet 446 is disposed in the second space 421 so as to be movable up and down, and includes a plurality of side walls 4461 and a plurality of frames 4462. These racks 4462 are disposed between the side walls 4461 to separate multiple accommodation spaces AS. Each accommodation space AS can accommodate a set of stacked solar cell modules SC and vapor chamber VP. The heating temperature of the first temperature adjustment device TA1 in the heat preservation zone 42 gradually decreases from the upper high temperature zone 4211 to the lower low temperature zone 4212 in the direction of gravity Z, so as to provide gradient cooling of the second space 421 in the direction of gravity Z. When a group of solar cell modules SC and temperature equalizing plate VP are heated in the first space 411, they will be pushed into the storage space AS. At this time, the mobile storage cabinet 446 will drop a certain distance along the gravity direction Z. As shown by arrow BB in FIG. 5 , the accommodation space AS on the upper floor is aligned with the first outlet 413 to receive the next pushed solar cell module SC and vapor chamber VP. When the mobile storage cabinet 446 descends along the direction of gravity Z, the solar cell module SC and the temperature equalizing plate VP in the mobile storage cabinet 446 are cooled by a gradient. When all the mobile storage cabinets 446 move to the low temperature zone 4212, the rotating side wall 420c of the heat preservation zone 42 will be opened to connect the second outlet 423 to the outside. At this time, the mobile storage cabinet 446 together with all the solar cell modules SC and the temperature equalizing plate VP accommodated therein can be pulled out of the heat preservation area 42 , as shown by the arrow CC in FIG. 6 . Since the rotating side wall 420c is only opened in the final stage, excessive heat exchange between the low-temperature zone 4212 and the outside world can be avoided, and the temperature control of the first temperature adjustment device TA1 when the mobile storage cabinet 446 is moved to the low-temperature zone 4212 can be ensured. Avoid energy consumption. Moreover, when performing the next step of thermal decomposition, the first temperature adjustment device TA1 of the heat preservation zone 42 can use the solar cell module SC and the temperature equalizing plate VP to raise the temperature again to the same level as the heating zone 41 during the time when the heating zone 41 is heated. 41 is actually the same temperature without spending additional heating time.

According to the thermal decomposition device of the above embodiment, since the solar cell module is insulated from the side by the heat preservation zone during the process of moving from the high temperature zone to the low temperature zone, and receives the heat provided by the first temperature regulating device from the side (horizontal direction), And the heat provided by the first temperature regulating device gradually decreases from the high temperature area to the low temperature area in the vertical direction, so that the temperature distribution on the entire surface of the glass plate of the solar cell module can be even, and any two points on the entire surface of the glass plate will not There is a temperature difference of more than 15 degrees Celsius, thus ensuring that the glass plate will not crack due to uneven cooling temperature. On the premise that the glass plate is cooled evenly, the gradient cooling from the high temperature zone to the low temperature zone can be designed to have a larger cooling range while still maintaining the integrity of the glass plate. The magnitude of the gradient temperature drop can be, for example, a drop of 40 to 60 degrees Celsius for every 1 meter of drop. Compared with the horizontal cooling of the conventional technology, which can only be designed to drop by 15 degrees Celsius for every 1 meter of advancement, this case can significantly save the space occupied by the thermal decomposition device and the required working time through the design of vertical rapid cooling. And because working hours are shortened, energy consumption can be further reduced.

Although the present invention has been disclosed in the foregoing embodiments, they are not intended to limit the present invention. Anyone skilled in the similar art can make some modifications and modifications without departing from the spirit and scope of the present invention. Therefore, the present invention is The scope of patent protection for an invention shall be determined by the scope of the patent application attached to this specification.

1, 2, 3, 4: Thermal decomposition device 11, 21, 31, 41: Heating area 110a, 120a, 120b, 220a, 410b: wall 420c: Sidewall 111, 311, 411: first space 112, 312, 412: first entrance 113, 313, 413: First exit 314: Door body 12, 22, 32, 42: Insulation area 121, 321, 421: Second space 1211, 2211, 3211, 4211: high temperature area 1212, 2212, 4212: low temperature area 122:Second entrance 123, 323, 423: Second exit 13, 33, 43: First conveying mechanism 131:Conveyor line 336, 436: Transport channel 337, 437: Propulsion device 14, 44: Second conveying mechanism 141:Orbit 142, 242, 342: vapor chamber 446:Mobile storage cabinet 4461:Side wall 4462: Frame 15, 25: Block 16, 36: The third conveying mechanism 17:Remove device AS: Accommodation space H: height TA1: First temperature adjustment device TA2: Second temperature adjustment device VP: vapor chamber SC: Solar cell module GP:Glass plate CL: Battery piece AA, BB, CC: arrow X: direction Z: direction

FIG. 1 is a schematic three-dimensional view of a thermal decomposition device for decomposing a solar cell module according to an embodiment of the present invention. Figure 2 is a schematic side view of the thermal decomposition device and solar cell module of Figure 1. FIG. 3 is a schematic side view of a thermal decomposition device for decomposing a solar cell module according to another embodiment of the present invention. FIG. 4 is a schematic side view of a thermal decomposition device for decomposing a solar cell module according to another embodiment of the present invention. FIG. 5 is a schematic side view of a thermal decomposition device for decomposing a solar cell module according to yet another embodiment of the present invention. Figure 6 is a schematic side view of the thermal decomposition device in Figure 5 after the solar cell module has been cooled down.

1: Thermal decomposition device

11:Heating area

110a, 120a: wall

111:First space

112:First entrance

113:First exit

12: Insulation area

121:Second Space

1211:High temperature area

1212: Low temperature zone

122:Second entrance

123:Second exit

13: The first conveying mechanism

131:Conveyor line

14: Second conveying mechanism

141:Orbit

142:Vapor chamber

15:Block

16: The third conveying mechanism

17:Remove device

TA1: First temperature regulating device

SC: Solar cell module

GP:Glass plate

CL: Battery piece

X: direction

Z: direction

Claims (12)

A thermal decomposition device used to decompose a solar cell module. The thermal decomposition device includes: a heating zone with a connected first space, a first inlet and a first outlet, the first inlet and the first The outlets are located on opposite sides of the first space; a heat preservation area has a connected second space, a second inlet and a second outlet, the second inlet is connected to the first outlet of the heating area; a first a transport mechanism, at least partially disposed in the first space, and used to move the solar cell module from the first entrance to the first outlet; and a second transport mechanism, at least partially disposed in the second space, And used to move the solar cell module from a high temperature area in the heat preservation area connected to the second inlet to a low temperature area in the heat preservation area connected to the second outlet, wherein the heat preservation area is at the second outlet The temperature of the heat preservation zone is lower than the temperature of the second inlet, the temperature of the high temperature zone is higher than the temperature of the low temperature zone, and the high temperature zone is located above the low temperature zone in the direction of gravity; wherein, the first inlet The direction to the first outlet is not parallel to the direction from the second inlet to the second outlet. The thermal decomposition device of claim 1, wherein the first conveying mechanism is a conveying line extending from the first inlet to the first outlet. The thermal decomposition device of claim 1, wherein the first conveying mechanism includes a transport channel and a pushing device, the transport channel extends from the first entrance to the first outlet, and the pushing device is located outside the first space , and should promote The device is used to push the solar cell module into the transportation channel in the first space. The thermal decomposition device as claimed in claim 1, wherein the second conveying mechanism includes a track and at least one uniform temperature plate, the track is disposed in the second space, and the at least one uniform temperature plate is movably disposed on the track. on, and the at least one uniform temperature plate is used to carry the solar cell module. The thermal decomposition device of claim 4, further comprising a stopper, wherein the stopper is located in the second space, and the stopper is used to push against the at least one vaporizing plate when it moves near the second outlet. The solar cell module is placed on the at least one temperature equalizing plate to move the solar cell module to the second outlet. The thermal decomposition device as claimed in claim 5, further comprising a plurality of temperature adjustment devices, and the temperature adjustment devices are arranged on the stopper and move adjacent to the at least one temperature equalizing plate from the second inlet to the second outlet. At least part of the path. The thermal decomposition device as claimed in claim 1, further comprising a third conveying mechanism, wherein the third conveying mechanism is connected to the second outlet of the heat preservation zone for moving the pyrolyzed solar modules out of the heat preservation zone. The thermal decomposition device as claimed in claim 7, further comprising a removal device, wherein the removal device is disposed on one side of the third conveying mechanism, and the removal device is used to remove some parts of the solar module. A thermal decomposition method used to decompose a solar cell module, the thermal decomposition method includes: Move the solar cell module into the heating zone from a first entrance of the heating zone to heat the solar cell module to 400 degrees Celsius to 700 degrees Celsius; move the solar cell module to a first entrance of the heating zone An outlet is used to move the solar cell module out of the heating zone; a second entrance of a heat preservation zone is used to move the solar cell module into the heat preservation zone to keep the solar cell module warm, wherein the second entrance of the heat preservation zone The inlet is connected to the first outlet of the heating zone, and the temperature of the heat preservation zone at the second entrance is substantially equal to the temperature of the heating zone at the first outlet; and the solar cell module is removed from the heat preservation zone A high-temperature zone connected to the second inlet moves to a low-temperature zone connected to a second outlet in the heat preservation zone, wherein the temperature of the heat preservation zone at the second outlet is lower than the temperature of the heat preservation zone at the second inlet. The temperature of the high-temperature zone is higher than the temperature of the low-temperature zone, and the high-temperature zone is located above the low-temperature zone in the direction of gravity; wherein the direction from the first inlet to the first outlet is not parallel to the second The direction from the entrance to the second exit. The thermal decomposition method of claim 9, wherein the temperature in the heat preservation zone decreases from the high temperature zone to the low temperature zone, and the solar cell module gradually cools down while moving from the high temperature zone to the low temperature zone. The thermal decomposition method as described in claim 9 further includes: moving the pyrolyzed solar components in the solar cell module out of the heat preservation area. The thermal decomposition method as described in claim 11 further includes: removing some parts of the solar module.

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