Solar cell chain type processing system and single-chip tracing method thereof

Abstract

The invention relates to a solar cell chain type processing system and a single wafer tracing method thereof, a feeding machine reads identification information of a feeding basket, generates a basket feeding request according to the identification information and sends the basket feeding request to a management platform, and the management platform is used for distributing a virtual ID of a cell silicon wafer according to the basket feeding request sent by the feeding machine. And the feeding machine binds the virtual IDs with the battery silicon wafers in the feeding basket in a one-to-one correspondence manner according to the information of the number of layers in the basket, takes out the battery silicon wafers from the feeding basket one by one, and conveys the battery silicon wafers and the corresponding virtual IDs to the host machine table. Each chain type cleaning process device in the main machine platform transmits battery silicon wafers and corresponding virtual IDs according to a processing process sequence and uploads processing information of each battery silicon wafer and the corresponding virtual ID to the management platform, and the discharging machine reports identification information of a discharging basket and the virtual ID of each layer of battery silicon wafer in the discharging basket to the management platform. And as a tracing basis of the solar cell silicon wafer, a single-wafer tracing effect is realized, and the tracing reliability is improved.

Description

Technical Field

[0001] This application relates to the technical field of photovoltaic cell production, and particularly to a solar cell chain processing system and a single-piece traceability method thereof. Background Art

[0002] The photovoltaic industry is a key industry in the global sustainable development strategy. With the increasing demand for clean and renewable energy, photovoltaic cells with high efficiency performance are attracting more and more attention. The production of high-efficiency photovoltaic cells requires precise control and management of each production link, and the accuracy requirement for full-process single-piece traceability is getting higher and higher.

[0003] In the traceability process of traditional solar cell chain processing, usually an electronic or manual process sheet is used for single-batch marking, and the batch of wafers is tracked manually to record and count the required test results. The method of tracking with a process sheet can usually only achieve the traceability of a single batch or a single carrier, and cannot achieve single-piece traceability, which has the disadvantage of low traceability reliability. Summary of the Invention

[0004] Based on this, it is necessary to provide a solar cell chain processing system and a single-piece traceability method thereof that can improve the traceability reliability in view of the above problems.

[0005] The first aspect of this application provides a solar cell chain processing system, including a loading machine, a main machine platform, an unloading machine, and a management platform. The main machine platform includes two or more chain-type cleaning process devices connected in the order of processing technology. The management platform performs wireless network communication with the loading machine, the main machine platform, and the unloading machine. The main machine platform is connected to the loading machine and the unloading machine, and the loading machine and the unloading machine form a local area network communication;

[0006] The loading machine reads the identification information of the loading basket, generates a basket loading request according to the identification information and sends it to the management platform, and receives the virtual ID of the battery silicon wafer and the information of the number of layers in the basket issued by the management platform. According to the information of the number of layers in the basket, the virtual ID is bound to the battery silicon wafers in the loading basket one by one; the loading machine takes out the battery silicon wafers from the loading basket one by one, conveys the battery silicon wafers and the corresponding virtual ID to the main machine platform, and also sends the virtual ID of each battery silicon wafer to the unloading machine;

[0007] Each chain-type cleaning process device in the main machine platform transfers the battery silicon wafers and the corresponding virtual ID in the order of processing technology, and uploads the processing information of each battery silicon wafer and the corresponding virtual ID to the management platform;

[0008] The blanking machine receives the processed battery wafers output by the main machine table and the virtual IDs of the battery wafers in the corresponding channels sent by the loading machine; the blanking machine inserts the received battery wafers into the blanking flower basket, and reports the identification information of the blanking flower basket and the virtual IDs of each layer of battery wafers in the blanking flower basket to the management platform;

[0009] The management platform is used to allocate virtual IDs of battery wafers according to the flower basket loading request sent by the loading machine, send the virtual IDs and the layer information in the flower basket to the loading machine, and receive the identification information of the blanking flower basket reported by the blanking machine and the virtual IDs of each layer of battery wafers in the blanking flower basket, and bind and store the processing information of each battery wafer based on the identification information of the blanking flower basket and the virtual IDs of each layer of battery wafers in the blanking flower basket.

[0010] In one embodiment, the management platform includes an EAP system and an MES system. The MES system is connected to the EAP system, and the EAP system communicates with the loading machine, the main machine table, and the blanking machine through wireless network;

[0011] The EAP system sends the loading flower basket information to the MES system for verification according to the flower basket loading request reported by the loading machine. After the verification is passed, the MES system returns the allocated virtual ID and the corresponding layer information of the virtual ID of the battery wafer in the flower basket to the EAP system; the EAP system sorts the virtual IDs according to the corresponding layers of the battery wafers and issues them to the array variable of the internal controller of the loading machine in the form of an array; the identification information is the flower basket number;

[0012] The internal controller of the loading machine binds the virtual ID to each battery wafer in the loading flower basket one by one with the first virtual ID in the array corresponding to the first battery wafer near the RF chip side storing the flower basket number;

[0013] When the blanking flower basket is full of battery wafers, the internal controller of the blanking machine sorts the first virtual ID corresponding to the first battery wafer near the RF chip side storing the flower basket number, and reports the flower basket number of the blanking flower basket and the virtual IDs of each layer of battery wafers in the blanking flower basket to the EAP system in the form of an array and summarizes them to the MES system. The MES system binds and stores the virtual IDs of each battery wafer with the corresponding processing information with the first virtual ID in the array corresponding to the first battery wafer.

[0014] In one embodiment, when the blanking machine detects the loss of the virtual ID of the battery silicon wafer, it generates a corresponding replacement ID according to the set rules, and puts the replacement ID of the battery silicon wafer into an array and reports it to the EAP system and aggregates it to the MES system; the MES system binds and stores the received replacement ID with the processing information of the corresponding battery silicon wafer.

[0015] In one embodiment, when the loading machine and the blanking machine detect the rejection of the battery silicon wafer, they also report the corresponding virtual ID to the management platform for recording.

[0016] In one embodiment, both the loading machine and the blanking machine identify the identification information stored in the RF chip in the flower basket through a probe, and output a prompt message when the probe is damaged to remind manual loading or unloading of the flower basket.

[0017] In one embodiment, the chain cleaning process equipment includes a chain BSG removal device and a chain PSG removal device.

[0018] In one embodiment, the processing information of the battery silicon wafer includes water and electricity consumption, chemical solution life, and production volume; the management platform performs data analysis based on the processing information of each battery silicon wafer to generate process evaluation data for process improvement and quality control.

[0019] In one embodiment, the solar cell chain processing system further includes a feeding track disposed between the chain cleaning process equipment, and an induction unit disposed on the feeding track. The battery silicon wafers are transported between the chain cleaning process equipment through the feeding track, and the induction unit is used to count the number of battery silicon wafers passing through the feeding track and report it to the management platform.

[0020] In one embodiment, after the internal controller of the loading machine reads the identification information of the loading flower basket, it verifies the identification information to determine whether the identification information is correct; if the identification information is correct, it reports a flower basket loading request corresponding to the identification information to the management platform; if the identification information is incorrect, it sends an error prompt message to the management platform.

[0021] The second aspect of the present application provides a single-piece traceability method for a solar cell chain processing system, including:

[0022] The loading machine reads the identification information of the loading flower basket, generates a flower basket loading request according to the identification information, and sends it to the management platform;

[0023] The management platform allocates a virtual ID of the battery silicon wafer according to the flower basket loading request sent by the loading machine, and issues the virtual ID and the inner layer number information in the flower basket to the loading machine;

[0024] The feeding machine receives the virtual ID of the battery silicon wafers and the information of the number of layers in the flower basket sent by the management platform, and binds the virtual ID to the battery silicon wafers in the feeding flower basket one by one according to the information of the number of layers in the flower basket;

[0025] The feeding machine takes out the battery silicon wafers from the feeding flower basket one by one, conveys the battery silicon wafers and the corresponding virtual ID to the main machine platform, and also sends the virtual ID of each battery silicon wafer to the discharging machine; the main machine platform includes two or more chain-type cleaning process equipment connected in the order of the processing process;

[0026] Each chain-type cleaning process equipment in the main machine platform transfers the battery silicon wafers and the corresponding virtual ID in the order of the processing process, and uploads the processing information of each battery silicon wafer and the corresponding virtual ID to the management platform;

[0027] The discharging machine receives the processed battery silicon wafers output by the main machine platform and the virtual ID of the battery silicon wafers in the corresponding channel sent by the feeding machine, inserts the received battery silicon wafers into the discharging flower basket, and reports the identification information of the discharging flower basket and the virtual ID of each layer of battery silicon wafers in the discharging flower basket to the management platform;

[0028] The management platform receives the identification information of the discharging flower basket and the virtual ID of each layer of battery silicon wafers reported by the discharging machine, and binds and stores the processing information of each battery silicon wafer based on the identification information of the discharging flower basket and the virtual ID of each layer of battery silicon wafers in the discharging flower basket.

[0029] The above-mentioned solar cell chain processing system and its single-piece traceability method. The loading machine reads the identification information of the loading flower basket, generates a flower basket loading request according to the identification information, and sends it to the management platform. The management platform is used to allocate virtual IDs for the battery wafers according to the flower basket loading request sent by the loading machine, and send the virtual IDs and the layer information in the flower basket to the loading machine. The loading machine binds the virtual IDs with the battery wafers in the loading flower basket one by one according to the layer information in the flower basket, takes out the battery wafers from the loading flower basket one by one, transports the battery wafers and the corresponding virtual IDs to the main machine table, and also sends the virtual IDs of each battery wafer to the unloading machine. Each chain cleaning process device in the main machine table transfers the battery wafers and the corresponding virtual IDs in the processing process sequence, and uploads the processing information of each battery wafer and the corresponding virtual ID to the management platform. The unloading machine receives the processed battery wafers output by the main machine table and the virtual IDs of the battery wafers in the corresponding channels sent by the loading machine. The unloading machine inserts the received battery wafers into the unloading flower basket, and reports the identification information of the unloading flower basket and the virtual IDs of each layer of battery wafers in the unloading flower basket to the management platform. The management platform binds and stores the processing information of each battery wafer based on the identification information of the unloading flower basket and the virtual IDs of each layer of battery wafers in the unloading flower basket, as the traceability basis for the solar cell wafers, supports binding and recording the processing information in the processing procedures where barcode scanning is not possible, realizes the effect of single-piece traceability, and improves the traceability reliability. Description of the Drawings

[0030] Figure 1 It is a structural block diagram of a solar cell chain processing system in an embodiment;

[0031] Figure 2 It is a schematic structural diagram of a flower basket in an embodiment;

[0032] Figure 3 It is a flowchart of the single-piece traceability method of a solar cell chain processing system in an embodiment. Detailed Embodiment

[0033] In order to make the objectives, technical solutions and advantages of the present application clearer, the present application will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application, and are not used to limit the present application.

[0034] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the technical field to which this application belongs. The terms used in the description of this application herein are only for the purpose of describing specific embodiments, and are not intended to limit this application.

[0035] As used herein, the singular forms "a", "an" and "the" may also include the plural forms unless the context clearly dictates otherwise. It should also be understood that the terms "comprising", "including" or "having", etc. specify the presence of the stated features, integers, steps, operations, components, parts or combinations thereof, but do not preclude the presence or addition of one or more other features, integers, steps, operations, components, parts or combinations thereof. At the same time, the term "and / or" used in this specification includes any and all combinations of the related listed items.

[0036] In one embodiment, as Figure 1 shown, a solar cell chain processing system is provided, which includes a loading machine 110, a main machine platform 120, an unloading machine 130 and a management platform 140. The main machine platform 120 includes two or more chain-type cleaning process devices connected in the order of the processing process. The management platform 140 performs wireless network communication with the loading machine 110, the main machine platform 120 and the unloading machine 130. The main machine platform 120 is connected to the loading machine 110 and the unloading machine 130. Specifically, the three can be connected through a transmission track to transfer the battery silicon wafers. The loading machine 110 and the unloading machine 130 form a local area network communication. Among them, the management platform 140 can be a terminal, a server, etc. The terminal can be, but is not limited to, various personal computers, laptop computers, smart phones, tablet computers, Internet of Things devices and portable wearable devices. The Internet of Things devices can be smart speakers, smart TVs, smart air conditioners, smart in-vehicle devices, etc. The portable wearable devices can be smart watches, smart bracelets, head-mounted devices, etc. The server can be implemented by an independent server or a server cluster composed of multiple servers. The management platform 140 and the loading machine 110, the main machine platform 120 and the unloading machine 130 can perform 5G communication. Each device forms an Internet of Things through 5G technology, making data transmission and sharing faster and more extensive. With the hyper-converged resources, data analysis and decision support can be carried out on a larger scale and in greater depth. The loading machine 110 and the unloading machine 130 are respectively responsible for loading the flower basket before processing and unloading the flower basket after processing.

[0037] Specifically, the loader 110 reads the identification information of the loading basket, generates a basket loading request based on the identification information and sends it to the management platform 140. The management platform 140 assigns a virtual ID to the battery silicon wafers according to the basket loading request sent by the loader 110, and issues the virtual ID and the information of the number of layers in the basket to the loader 110. The loader 110 receives the virtual ID of the battery silicon wafers and the information of the number of layers in the basket issued by the management platform 140, and binds the virtual ID to each battery silicon wafer in the loading basket one by one according to the information of the number of layers in the basket; the loader 110 takes out the battery silicon wafers from the loading basket one by one, conveys the battery silicon wafers and the corresponding virtual ID to the main machine table 120, and also sends the virtual ID of each battery silicon wafer to the unloader 130; each chain cleaning process equipment in the main machine table 120 transfers the battery silicon wafers and the corresponding virtual ID in the order of the processing process, and uploads the processing information of each battery silicon wafer and the corresponding virtual ID to the management platform 140.

[0038] The unloader 130 receives the processed battery silicon wafers output by the main machine table 120 and the virtual ID of the battery silicon wafers in the corresponding channels sent by the loader 110; the unloader 130 inserts the received battery silicon wafers into the unloading basket, and reports the identification information of the unloading basket and the virtual ID of each layer of battery silicon wafers in the unloading basket to the management platform 140; the management platform 140 receives the identification information of the unloading basket reported by the unloader 130 and the virtual ID of each layer of battery silicon wafers in the unloading basket, and binds and stores the processing information of each battery silicon wafer based on the identification information of the unloading basket and the virtual ID of each layer of battery silicon wafers in the unloading basket.

[0039] The types of the chain cleaning process equipment in the main machine table 120 are not unique either. Specifically, it may include a chain BSG removal device and / or a chain PSG removal device. The chain BSG removal device is used to remove the back surface field structure on the back surface field silicon wafer to improve the efficiency of the battery chip; the chain PSG removal device is used to remove the phosphosilicate glass on the phosphorus-doped silicon wafer. This step can increase the light absorption capacity of the silicon wafer and improve the photoelectric conversion efficiency.

[0040] Taking the example that the main machine table 120 includes both a chain BSG removal device and a chain PSG removal device at the same time, the number of the chain BSG removal device and the chain PSG removal device can both be one or multiple. Multiple chain BSG removal devices and chain PSG removal devices are arranged in different channels to clean the input battery silicon wafers. The two processes of chain BSG removal and chain PSG removal play a crucial role in the production process of TOPCon battery chips. These two processes are crucial for the quality and performance of the battery chips. Tracing the specific information of each battery chip in the key processes such as production, testing and packaging can not only provide the transparency of the production process, but also has important value in aspects such as quickly locating production problems, optimizing production processes and improving product quality.

[0041] Among them, the processing information of the battery silicon wafers may specifically include water and electricity consumption, chemical solution life, and production output; the management platform 140 performs data analysis based on the processing information of each battery silicon wafer to generate process evaluation data for process improvement and quality control. Specifically, sensors and a data acquisition system are used in the main machine 120 to collect various types of data such as water and electricity consumption, chemical solution life, and production output generated in the processes of removing BSG and removing PSG. The management platform 140 processes and analyzes these data through data analysis software, providing strong support for process improvement and quality control.

[0042] In addition, the system further includes an AGV cart, which is used to transport the flower basket loaded with battery silicon wafers to the loader 110. This cooperation method can not only significantly improve the efficiency and accuracy of material handling, but also further promote the automation and informatization of the production process. Specifically, after the AGV cart transports the flower basket loaded with battery silicon wafers to the loader 110, the internal controller of the loader 110 uses a probe to scan and identify the identification information of the loading flower basket through RFID (Radio Frequency Identification). Among them, the identification information can be a barcode or a QR code. The loader 110 sends a flower basket loading request carrying the identification information of the loading flower basket to the management platform 140. Further, after the internal controller of the loader 110 reads the identification information of the loading flower basket, it checks the identification information to determine whether the identification information is correct; if the identification information is correct, it reports the flower basket loading request corresponding to the identification information to the management platform 140; if the identification information is incorrect, it sends an error prompt message to the management platform 140.

[0043] The structure of the flower basket is as Figure 2As shown in the figure, it is used to place multiple battery silicon wafers. There is a radio frequency chip in the flower basket, which is used to store the identification information of the flower basket, such as the flower basket number. After the loader 110 receives the virtual ID sent by the management platform 140, the internal controller of the loader 110 can directly bind the physical battery silicon wafers in different layers in the loading flower basket to the virtual ID one by one according to the layer information. The internal controller of the loader 110 controls the manipulator to take out the battery silicon wafers from the loading flower basket one by one, convey the battery silicon wafers to each channel in the main machine table 120 for cleaning, and send the virtual ID of the battery silicon wafers corresponding to the respective channels to the unloader 130 through the local area network. The virtual ID of each battery silicon wafer in the main machine table 120 follows the physical battery silicon wafer for circulation. The unloader 130 receives the battery silicon wafers that have completed cleaning in the corresponding channels and the corresponding virtual IDs. The internal controller of the unloader 130 uses a probe to identify the identification information of the unloading flower basket (specifically the flower basket number) through RFID scanning, and uses the manipulator to insert the battery silicon wafers that have completed cleaning into the unloading flower basket, and reports the flower basket number of the unloading flower basket and the virtual ID of each layer of battery silicon wafers in the unloading flower basket to the management platform 140. The specific types of the internal controllers of the loader 110 and the unloader 130 are not unique. For example, they can be functional devices such as FPGA (Field-Programmable Gate Array) and MCU (Microcontroller Unit).

[0044] In one embodiment, the management platform 140 includes an EAP (Manufacturing Execution System) system and an MES (Enterprise Resource Planning) system. The MES system is connected to the EAP system, and the EAP system communicates with the loader 110, the main machine table 120, and the unloader 130 through wireless networks.

[0045] The EAP system sends the loading flower basket information to the MES system for verification according to the flower basket loading request reported by the loader. After the MES system passes the verification, it returns the allocated virtual ID and the information of the corresponding layer of the virtual ID of the battery silicon wafers in the flower basket to the EAP system; the EAP system sorts the virtual IDs according to the corresponding layers of the battery silicon wafers and issues them to the array variable of the internal controller of the loader 110 in the form of an array. The internal controller of the loader 110 binds the virtual ID to the battery silicon wafers in the loading flower basket one by one with the first battery silicon wafer close to the radio frequency chip side storing the flower basket number corresponding to the first virtual ID in the array.

[0046] When the internal controller of the blanking machine 130 detects that the blanking flower basket is full of battery wafers, it sorts the first battery wafer on the side of the RF chip close to the storage flower basket number corresponding to the first virtual ID, and reports the flower basket number of the blanking flower basket and the virtual ID of each layer of battery wafers in the blanking flower basket to the EAP system in the form of an array and summarizes it to the MES system. The MES system uses the first virtual ID in the array to correspond to the first battery wafer, binds and stores the virtual ID of each battery wafer with the corresponding processing information, and then can perform data analysis based on the processing information to generate process evaluation data for process improvement and quality control. Through cross-platform system integration, the system integration from production to quality inspection is completed to ensure data consistency and efficient data flow.

[0047] Specifically, after receiving the flower basket loading request sent by the loading machine 110, the EAP system can forward the identification information of the flower basket as the loading flower basket information to the MES system for recording. The MES system first verifies the identification information of the flower basket. After passing the verification, it obtains the number of layers information in the flower basket according to the identification information of the flower basket, assigns virtual IDs to the battery wafers on each layer, and returns the virtual IDs and the number of layers information in the flower basket to the EAP system. The EAP system stores them in the internal controller of the loading machine 110 in the form of an array variable. The subscript of the array corresponds one by one to the number of layers of each slot in the flower basket. When the loading machine 110 takes wafers from each layer of the flower basket, it needs to take out the virtual ID, and the virtual ID flows with the physical battery wafers. The loading machine 110 and the blanking machine 130 form a local area network. The battery wafers flow into the main machine table 120. The loading machine 110 transmits the virtual ID corresponding to the channel to the blanking machine 130, and the blanking machine 130 caches the virtual ID in the virtual ID cache heap corresponding to the channel. After the blanking machine 130 detects the physical battery wafers, it takes out the virtual ID corresponding to the channel from the cache heap, and reports the flower basket number and the virtual ID of each layer of battery wafers in the flower basket to the MES system when the blanking of the blanking machine 130 is completed.

[0048] The internal controller of the loading machine 110 is used to store the virtual ID. The RF chip in the flower basket only stores the identification information of the flower basket and does not need to store the virtual ID of the battery wafers. Therefore, there is no need for repeated erasing and writing, which reduces the amount of data read and written by the RF chip in the flower basket and avoids network jamming. Moreover, it can also reduce the risk of chip failure caused by damage to the information in the RF chip due to frequent erasing and writing. Since the RF chip is cast in the flower basket, replacing the flower basket is required when the chip fails. Avoiding frequent erasing and writing of the information in the RF chip can also reduce the maintenance cost.

[0049] In one embodiment, when the blanking machine 130 detects the loss of the virtual ID of the battery wafer, it generates a corresponding replacement ID according to the set rules, and puts the replacement ID of the battery wafer into an array and reports it to the EAP system and aggregates it to the MES system; the MES system binds and stores the received replacement ID with the processing information of the corresponding battery wafer. Among them, the naming rules of the virtual ID issued by the EAP system are different from the replacement naming rules. For example, if the virtual IDs issued by the EAP system all start with 1, the replacement IDs can all start with 3. The loading machine 110 transfers the battery wafers to the main machine table 120 in the order of the virtual IDs for the cleaning process. If the blanking machine 130 does not receive the virtual ID of the battery wafer, it generates a replacement ID according to the rules. For example, if the missing virtual ID is 10011, the blanking machine 130 generates a replacement ID of 30011 for the corresponding battery wafer.

[0050] When blanking, the blanking machine 130 inserts the battery wafers into the blanking basket. When the basket is full, it reports and aggregates the virtual ID, layer information, and basket number in the basket to the MES system. The battery wafer closest to the RF chip side corresponds to the first virtual ID in the reported array. If there is a replacement ID operation, the blanking machine 130 reports and aggregates the basket number, virtual ID, replacement ID, and layer information to the MES system in the form of an array in sequence. By uploading the information in sequence, the virtual ID of the nth battery wafer becomes the replacement ID, which means that the virtual ID of this battery wafer is lost. The MES system will replace the original virtual ID with the received replacement ID and bind and store the replacement ID of the battery wafer with the processing information.

[0051] In one embodiment, when the loading machine 110 and the blanking machine 130 also detect the rejection of the battery wafers, they report the corresponding virtual IDs to the management platform 140 for recording. The loading machine 110 and the blanking machine 130 can detect whether each battery wafer is manually rejected due to loss or damage through photoelectric sensors. When it detects that a battery wafer is rejected, it reports the virtual ID of the rejected battery wafer to the EAP system, and the EAP system forwards it to the MES system for recording. In addition, both the loading machine 110 and the blanking machine 130 identify the basket number stored in the RF chip in the basket through a probe and output a prompt message when the probe is damaged to remind manual loading or unloading of the basket.

[0052] In one embodiment, the solar cell chain processing system further includes a feeding track disposed between each chain cleaning process device, and an induction unit disposed on the feeding track. The battery wafers are transported between each chain cleaning process device through the feeding track. The induction unit is used to count the number of battery wafers passing through the feeding track and report it to the management platform 140. Further, the system also includes a buffer mechanism disposed on the feeding track. The buffer mechanism is used to store the battery wafers whose processing progress is greater than the set progress threshold, and report the battery wafer buffer information to the management platform 140 when the battery wafers are stored and taken out.

[0053] The specific value of the set progress threshold is not unique and can be set according to actual needs. The function of the buffer mechanism is to balance the upper and lower water levels of the battery wafers, and temporarily store the battery wafers with too fast progress in the buffer mechanism to balance the progress. Further, the management platform 140 calculates the order of the grasping positions of the manipulator controlled by the unloader according to the number of times of sending / receiving battery wafers reported by the feeding track, the processing information of each battery wafer, the virtual ID of each battery wafer, and the battery wafer buffer information reported by the buffer mechanism, that is, the loading order, so as to determine the order of battery wafer unloading, which is more convenient for single-piece traceability of battery wafers.

[0054] The above solar cell chain processing system provides a solution for single-piece traceability of battery wafers in chain BSG removal and chain PSG removal. By recording and analyzing the wafer history data reported by the equipment through the MES system, it can effectively help the MES system analyze the collected data and find potential problems and abnormal situations in the production process. It can realize the intelligent management of wafer production, improve product quality and production efficiency, and reduce production costs.

[0055] In one embodiment, as Figure 3 shown, there is also provided a single-piece traceability method for a solar cell chain processing system, including:

[0056] Step S110: The loader reads the identification information of the loading basket and generates a basket loading request according to the identification information and sends it to the management platform.

[0057] Step S120: The management platform allocates the virtual ID of the battery wafer according to the basket loading request sent by the loader, and sends the virtual ID and the inner layer number information of the basket to the loader.

[0058] Step S130: The loader receives the virtual ID of the battery wafer and the inner layer number information of the basket sent by the management platform, and binds the virtual ID to the battery wafers in the loading basket one by one according to the inner layer number information of the basket.

[0059] Step S140: The loader sequentially takes out the battery wafers from the loading flower basket, conveys the battery wafers and the corresponding virtual IDs to the main machine platform, and also sends the virtual IDs of each battery wafer to the unloader; the main machine platform includes two or more chain cleaning process devices connected in the order of the processing technology.

[0060] Step S150: Each chain cleaning process device in the main machine platform conveys the battery wafers and the corresponding virtual IDs in the order of the processing technology, and uploads the processing information of each battery wafer and the corresponding virtual ID to the management platform.

[0061] Step S160: The unloader receives the processed battery wafers output by the main machine platform and the virtual IDs of the battery wafers in the corresponding channels sent by the loader, inserts the received battery wafers into the unloading flower basket, and reports the flower basket number of the unloading flower basket and the virtual IDs of each layer of battery wafers in the unloading flower basket to the management platform.

[0062] Step S170: The management platform receives the flower basket number of the unloading flower basket and the virtual IDs of each layer of battery wafers reported by the unloader, and binds and stores the processing information of each battery wafer based on the flower basket number of the unloading flower basket and the virtual IDs of each layer of battery wafers in the unloading flower basket.

[0063] It can be understood that the specific embodiments of the single-piece traceability method of the solar cell chain processing system have been explained in detail in the above solar cell chain processing system, and will not be repeated here.

[0064] The technical features of the above embodiments can be combined arbitrarily. For the sake of brevity of description, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, it should be considered as the scope described in this specification.

[0065] The above embodiments only represent several implementation manners of the present application, and the description thereof is relatively specific and detailed, but it cannot be understood as a limitation on the scope of the invention patent. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present application, several modifications and improvements can still be made, and these all belong to the protection scope of the present application. Therefore, the protection scope of the patent of the present application shall be subject to the appended claims.

Claims

1. A solar cell chain processing system, characterized in that, It includes a loading machine, a main machine table, an unloading machine and a management platform. The main machine table includes more than two chain-type cleaning process devices connected in the order of the processing process. The management platform conducts wireless network communication with the loading machine, the main machine table and the unloading machine. The main machine table is connected to the loading machine and the unloading machine, and the loading machine and the unloading machine form a local area network communication; The loading machine reads the identification information of the loading basket, generates a basket loading request according to the identification information and sends it to the management platform, and receives the virtual ID of the battery silicon wafer and the information of the number of layers in the basket issued by the management platform. According to the information of the number of layers in the basket, the virtual ID is bound to the battery silicon wafers in the loading basket one by one; The loading machine takes out the battery silicon wafers from the loading basket one by one, transports the battery silicon wafers and the corresponding virtual IDs to the main machine table, and also sends the virtual IDs of the battery silicon wafers to the unloading machine; Each chain-type cleaning process device in the main machine table transfers the battery silicon wafers and the corresponding virtual IDs in the order of the processing process, and uploads the processing information of each battery silicon wafer and the corresponding virtual ID to the management platform; The unloading machine receives the processed battery silicon wafers output by the main machine table and the virtual IDs of the battery silicon wafers in the corresponding channels sent by the loading machine; The unloading machine inserts the received battery silicon wafers into the unloading basket, and reports the identification information of the unloading basket and the virtual IDs of the battery silicon wafers on each layer in the unloading basket to the management platform; The management platform is used to allocate the virtual ID of the battery silicon wafer according to the basket loading request sent by the loading machine, send the virtual ID and the information of the number of layers of the virtual ID in the basket to the loading machine, and receive the identification information of the unloading basket reported by the unloading machine and the virtual IDs of the battery silicon wafers on each layer in the unloading basket. Based on the identification information of the unloading basket and the virtual IDs of the battery silicon wafers on each layer in the unloading basket, the processing information of each battery silicon wafer is bound and stored.

2. The solar cell chain processing system according to claim 1, wherein The management platform includes an EAP system and an MES system. The MES system is connected to the EAP system. The EAP system conducts wireless network communication with the loading machine, the main machine table and the unloading machine; The identification information is the basket number; The EAP system sends the loading basket information to the MES system for verification according to the basket loading request reported by the loading machine. After the verification is passed by the MES system, the allocated virtual ID and the information of the corresponding layer of the virtual ID of the battery silicon wafer in the basket are returned to the EAP system; The EAP system sorts the virtual IDs according to the corresponding layers of the battery silicon wafers and issues them to the array variable of the internal controller of the loading machine in the form of an array; The internal controller of the loading machine binds the virtual ID to the battery silicon wafers in the loading basket one by one with the first virtual ID in the array corresponding to the first battery silicon wafer close to the RF chip side storing the basket number; When the internal controller of the blanking machine detects that the blanking flower basket is full of battery wafers, it sorts the first battery wafer on the side of the RF chip close to the storage flower basket number corresponding to the first virtual ID, and reports the flower basket number of the blanking flower basket and the virtual ID of each layer of battery wafers in the blanking flower basket to the EAP system in the form of an array and summarizes it to the MES system. The MES system corresponds the first virtual ID in the array to the first battery wafer, and binds and stores the virtual ID of each battery wafer with the corresponding processing information.

3. The solar cell chain processing system according to claim 2, wherein, When the blanking machine detects that the virtual ID of a battery wafer is lost, it generates a corresponding patch ID according to the set rules, and puts the patch ID of the battery wafer into the array and reports it to the EAP system and summarizes it to the MES system; the MES system binds and stores the received patch ID with the processing information of the corresponding battery wafer.

4. The solar cell chain processing system according to claim 1, characterized in that, When the loading machine and the blanking machine detect the rejection of a battery wafer, they report the corresponding virtual ID to the management platform for recording.

5. The solar cell chain processing system according to claim 1, wherein Both the loading machine and the blanking machine identify the identification information stored in the RF chip in the flower basket through a probe, and output a prompt message when the probe is damaged to remind manual loading or blanking of the flower basket.

6. The solar cell chain processing system according to any one of claims 1-5, characterized in that, The chain-type cleaning process equipment includes a chain-type BSG removal device and a chain-type PSG removal device.

7. The solar cell chain processing system according to claim 6, wherein, The processing information of the battery wafers includes water and electricity consumption, chemical solution life, and output; the management platform analyzes the data based on the processing information of each battery wafer to generate process evaluation data for process improvement and quality control.

8. The solar cell chain processing system according to any one of claims 1-5, characterized in that It also includes a feeding track arranged between the chain-type cleaning process equipment, and an induction unit arranged on the feeding track. The battery wafers are transported between the chain-type cleaning process equipment through the feeding track. The induction unit is used to count the number of battery wafers passing through the feeding track and report it to the management platform.

9. The solar cell chain processing system according to any one of claims 1-5, characterized in that, After the internal controller of the loading machine reads the identification information of the loading flower basket, it checks the identification information to determine whether the identification information is correct; if the identification information is correct, it reports a flower basket loading request corresponding to the identification information to the management platform; if the identification information is incorrect, it sends an error prompt message to the management platform.

10. A single-piece traceability method for a solar cell chain processing system, characterized in that, [[ID=,8]]Including: The loading machine reads the identification information of the loading flower basket, generates a flower basket loading request according to the identification information and sends it to the management platform; The management platform allocates the virtual ID of the battery wafer according to the flower basket loading request sent by the loading machine, and issues the virtual ID and the information of the number of layers in the flower basket to the loading machine; The loading machine receives the virtual ID of the battery wafer and the information of the number of layers in the flower basket issued by the management platform, and binds the virtual ID with the battery wafers in the loading flower basket one by one according to the information of the number of layers in the flower basket; The loading machine takes out the battery wafers from the loading flower basket one by one, transports the battery wafers and the corresponding virtual ID to the main machine table, and also sends the virtual ID of each battery wafer to the blanking machine; the main machine table includes two or more chain-type cleaning process equipment connected in the order of the processing process. Each chain cleaning process equipment in the main machine table transfers the battery silicon wafers and corresponding virtual IDs in the order of the processing process, and uploads the processing information of each battery silicon wafer and the corresponding virtual ID to the management platform; The unloader receives the processed battery silicon wafers output by the main machine table and the virtual IDs of the battery silicon wafers in the corresponding channels sent by the loader, inserts the received battery silicon wafers into the unloading flower basket, and reports the identification information of the unloading flower basket and the virtual IDs of each layer of battery silicon wafers in the unloading flower basket to the management platform; The management platform receives the identification information of the unloading flower basket reported by the unloader and the virtual IDs of each layer of battery silicon wafers in the unloading flower basket, and binds and stores the processing information of each battery silicon wafer based on the identification information of the unloading flower basket and the virtual IDs of each layer of battery silicon wafers in the unloading flower basket.

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